CN112318547A

CN112318547A - Desktop mechanical arm driving structure, desktop mechanical arm and robot

Info

Publication number: CN112318547A
Application number: CN202011259844.XA
Authority: CN
Inventors: 刘培超; 叶伟智; 李叶鹏; 王重彬; 刘主福; 王伦; 郎需林
Original assignee: Shenzhen Yuejiang Technology Co Ltd
Current assignee: Shenzhen Yuejiang Technology Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-02-05
Also published as: WO2022099898A1

Abstract

The invention discloses a desktop mechanical arm driving structure, which comprises: a base and a turntable; the base is internally provided with a rotary table driving motor and a rotary table driving shaft, the rotary table driving motor is in transmission connection with the rotary table driving shaft, the rotary table driving shaft is in transmission connection with the rotary table, the rotary table driving shaft is arranged in the central area of the base, and the rotary table driving motor is arranged around the rotary table driving shaft in a staggered manner; the turntable comprises a base, a large arm driving motor and a small arm driving motor are arranged on the base, and the large arm driving motor and the small arm driving motor are arranged on the rear side of the base. According to the desktop mechanical arm driving structure provided by the embodiment of the invention, the turntable driving shaft and the turntable driving motor are arranged in the base in a staggered manner, so that compared with the existing coaxial arrangement, the overall height of the desktop mechanical arm can be reduced, the gravity center height of the desktop mechanical arm is reduced, the desktop mechanical arm is further ensured not to shake or turn over when grabbing heavy objects, and the stability of the desktop mechanical arm can be improved.

Description

Desktop mechanical arm driving structure, desktop mechanical arm and robot

Technical Field

The invention relates to the field of desktop mechanical arms, in particular to a desktop mechanical arm driving structure, a desktop mechanical arm and a robot.

Background

The table top mechanical arm is a subdivision class of mechanical arms, has strong adaptability and dynamic problem solving capability, and is widely applied to the teaching field, generally comprises a base, a rotary table, a large arm, a small arm, a tail end, a rotary table driving motor, a large arm driving motor and a small arm driving motor, wherein the rotary table is rotatably connected with the base, the large arm is respectively connected with the rotary table and the small arm, the small arm is connected with the tail end, the tail end is used for arranging an actuator, the rotary table driving motor is used for driving the rotary table to rotate relative to the base, the large arm driving motor is used for driving the large arm to move, the small arm driving motor is used for driving the small arm to move, and the large arm and the small arm can drive the tail end to move in a working space by utilizing a parallelogram principle, for example.

At present, the desktop mechanical arm is generally used for education purposes, the weight of the grabbed objects is light, the gravity center of the desktop mechanical arm cannot be affected after the objects are grabbed, and the desktop mechanical arm is caused to shake or turn on one side of the small arm. Because the desktop mechanical arm has the advantages of small volume and low cost, the desktop mechanical arm is expected to be suitable for the application requirement of industrial grade, but if the desktop mechanical arm is directly applied to the industrial grade, the desktop mechanical arm can shake or turn over towards one side of the small arm after grabbing the object because the weight of the grabbed object is heavier.

In addition, the revolving stage driving motor and the revolving stage drive shaft of the existing tabletop mechanical arm are coaxially arranged from top to bottom, for example, a vertical inverted compact type small four-axis robot disclosed in chinese patent application No. cn201810921858.x, which comprises a first axis motor, a revolving stage connecting plate and a revolving disc sequentially arranged from top to bottom, the first axis motor is equivalent to the revolving stage driving motor, the revolving stage connecting plate is equivalent to the revolving stage drive shaft, the revolving disc is equivalent to the revolving stage, the first axis motor and the revolving stage connecting plate are coaxial from top to bottom, which can lead to the overall height of the robot to be high, and further lead to the gravity center of the robot to be high, thereby enabling the robot to easily shake or turn on one's.

Disclosure of Invention

The present invention is directed to a driving structure of a tabletop mechanical arm, which is used to solve the above problems.

In order to achieve the above object, the present invention provides a driving structure of a desktop robot arm, including: a base and a turntable;

the base is internally provided with a rotary table driving motor and a rotary table driving shaft, the rotary table driving motor is in transmission connection with the rotary table driving shaft, the rotary table driving shaft is in transmission connection with the rotary table, the rotary table driving shaft is arranged in the central area of the base, and the rotary table driving motor is arranged around the rotary table driving shaft in a staggered manner;

the turntable comprises a base, wherein a large arm driving motor and a small arm driving motor are arranged on the base, and the large arm driving motor and the small arm driving motor are arranged on the rear side of the base.

Wherein, the output shaft of revolving stage driving motor sets up upwards.

Wherein, desktop arm drive structure still includes:

the rotary table driving motor is in transmission connection with the rotary table driving shaft through the rotary table speed reducing assembly;

the large arm speed reducing assembly is in transmission connection with the large arm driving motor;

and the small arm speed reducing assembly is in transmission connection with the small arm driving motor.

The turntable speed reducing assembly comprises a turntable primary synchronous belt wheel and a turntable secondary synchronous belt wheel;

one end of the turntable primary synchronous belt pulley is in transmission connection with the turntable driving motor, the other end of the turntable primary synchronous belt pulley is in transmission connection with one end of the turntable secondary synchronous belt pulley, and the other end of the turntable secondary synchronous belt pulley is in transmission connection with the turntable driving shaft.

The base is internally provided with a partition plate extending in the horizontal direction, the turntable primary synchronous belt pulley is arranged on the top surface of the partition plate, the turntable driving motor is arranged below the bottom surface of the partition plate, an output shaft of the turntable driving motor penetrates out of the partition plate to be in transmission connection with one end of the turntable primary synchronous belt pulley, and the turntable secondary synchronous belt pulley is arranged on the bottom surface of the partition plate.

Wherein, one side of base is constructed with the mounting panel breach, the base still includes the mounting panel, the mounting panel set up in mounting panel breach department, the mounting panel is constructed with a plurality of interface bayonet socket.

Wherein, close on the baffle one side of mounting panel is equipped with the backstop board, the backstop board is located the revolving stage below, be equipped with on the revolving stage be used for with the spacing post of revolving stage of backstop board butt, the spacing post of revolving stage is located and is close to big arm with one side of forearm.

The stop plate comprises a fixing portion connected with the partition plate and a limiting portion extending towards the rotary table driving shaft, and two side walls of the limiting portion shrink towards the rotary table driving shaft.

Wherein, the included angle formed by the intersection of two extension lines of two side walls along the direction is between 5 and 60 degrees.

The rotary table driving motor is a servo motor and is provided with an encoder, the encoder is a multi-circle absolute value encoder, and a battery mounting seat electrically connected with the rotary table driving motor is further arranged in the base.

The large arm driving motor and the small arm driving motor are respectively servo motors comprising absolute value encoders and electromagnetic band-type brakes, and are respectively electrically connected with the battery mounting seat.

The absolute value encoder is a multi-turn absolute value encoder, and the electromagnetic band brake is an electromagnetic band brake of a power-off band brake.

Wherein the turntable drive shaft is disposed on the partition plate through a thrust bearing.

The bearing section is abutted to the upper edge of the inner ring of the thrust bearing, the insertion section is abutted to the inner ring of the thrust bearing, and the connecting section is in transmission connection with the secondary synchronous belt pulley of the rotary table.

Wherein, desktop arm drive structure still includes:

the bearing pressing plate is in a hollow annular structure, the bearing pressing plate is arranged on the thrust bearing and is abutted to the outer ring of the thrust bearing, and the bearing pressing plate is fixedly connected with the partition plate.

Wherein, the thrust bearing is a double-row angular contact bearing.

The turntable primary synchronous belt pulley comprises a turntable primary driving wheel, a turntable primary driven wheel and a turntable primary synchronous belt, and the turntable primary driving wheel and the turntable primary driven wheel are in transmission connection through the turntable primary synchronous belt;

the second-stage synchronous belt pulley of the rotary table comprises a second-stage driving wheel of the rotary table, a second-stage driven wheel of the rotary table and a second-stage synchronous belt of the rotary table, and the second-stage driving wheel of the rotary table and the second-stage driven wheel of the rotary table are in transmission connection through the second-stage synchronous belt of the rotary table.

The base further comprises a rotary table transmission shaft, the partition plate is provided with a shaft hole for the rotary table transmission shaft to pass through, the rotary table transmission shaft comprises an installation sleeve, two bearings and a shaft body, the two bearings are arranged at two ends of the installation sleeve in an interference fit mode respectively, the shaft body is arranged in the installation sleeve and is connected with inner rings of the two bearings simultaneously, one end of the shaft body is connected with a rotary table one-stage driven wheel through the shaft hole, and the other end of the shaft body is connected with a rotary table two-stage driving wheel.

Wherein, desktop arm drive structure still includes:

a plurality of first set screws and a first tensioning mechanism;

the partition plate is provided with a plurality of first kidney-shaped holes, and the first fixing screws are fixedly connected with the mounting sleeve through the first kidney-shaped holes;

the first tensioning mechanism comprises a first support and a first rotating bolt, the first support is provided with a first connecting end and a first threaded end, the first tensioning mechanism is fixedly connected with the partition plate through the first connecting end, the first tensioning mechanism is located below the partition plate, the first rotating bolt is rotatably connected with the first threaded end, the screw head of the first rotating bolt is arranged close to the mounting sleeve, the position of the first rotating bolt in the horizontal direction can be adjusted by rotating the first rotating bolt, the screw head of the first rotating bolt is abutted to the mounting sleeve, and the mounting sleeve is moved along a track corresponding to the first kidney-shaped hole by extruding the mounting sleeve.

The rotary table secondary driven wheel is detachably connected with the connecting section, the rotary table secondary driven wheel is provided with a butt structure, the butt structure is in a ring shape matched with the connecting section, the rotary table secondary driven wheel is in butt joint with the lower edge of the inner ring of the thrust bearing when being fixedly connected with the connecting section, the rotary table secondary driven wheel is provided with a connecting structure, the connecting structure is a plurality of threaded through holes, and the connecting section is provided with threaded holes matched with the threaded through holes.

The driving structure of the desktop mechanical arm further comprises a positioning pin, the connecting section is provided with a positioning hole, the second-stage driven wheel of the rotary table is provided with a positioning through hole, and the positioning pin is inserted into the positioning hole through the positioning through hole.

Wherein, desktop arm drive structure still includes:

a plurality of second set screws and a second tensioning mechanism;

the partition plate is provided with a plurality of second kidney-shaped holes, and the second fixing screws are fixedly connected with the rotary table driving motor through the second kidney-shaped holes;

the second tensioning mechanism comprises a second support and a second rotating bolt, the second support is provided with a second connecting end and a second threaded end, the second tensioning mechanism is fixedly connected with the partition plate through the second connecting end, the second tensioning mechanism is located below the partition plate, the second rotating bolt is rotatably connected with the threaded end, the screw head of the second rotating bolt is close to the rotary table driving motor, the position of the second rotating bolt in the horizontal direction can be adjusted through rotating the second rotating bolt, the screw head of the second rotating bolt is abutted to the rotary table driving motor, and the rotary table driving motor moves along the track corresponding to the second kidney-shaped hole through extrusion.

The base is provided with limiting parts positioned on the front side and the rear side of the large arm, and the limiting parts are used for being abutted and matched with the stop blocks arranged at the tail end of the large arm.

The large arm driving motor and the small arm driving motor are arranged in a vertically stacked mode, and the large arm speed reducing assembly and the small arm speed reducing assembly are located on the left outer side face and the right outer side face of the base respectively.

The large arm speed reduction assembly comprises a large arm primary synchronous belt pulley and a large arm secondary synchronous belt pulley which is arranged close to the base;

the small arm speed reduction assembly comprises a small arm primary synchronous belt wheel and a small arm secondary synchronous belt wheel which is arranged close to the base.

The large arm speed reducing assembly further comprises a large arm transmission shaft and a large arm driving shaft, the large arm driving shaft is positioned above the large arm transmission shaft, the large arm primary synchronous belt pulley is arranged between an output shaft of the large arm driving motor and the large arm transmission shaft, and the large arm secondary synchronous belt pulley is arranged between the large arm transmission shaft and the large arm driving shaft;

the small arm speed reducing assembly further comprises a small arm transmission shaft and a small arm driving shaft, the small arm driving shaft is located above the small arm transmission shaft, the small arm primary synchronous belt pulley is arranged between an output shaft of the small arm driving motor and the small arm transmission shaft, and the small arm secondary synchronous belt pulley is arranged between the small arm transmission shaft and the small arm driving shaft.

The large-arm primary synchronous belt pulley comprises a large-arm primary driving wheel, a large-arm primary driven wheel and a large-arm primary synchronous belt, and the large-arm secondary synchronous belt pulley comprises a large-arm secondary driving wheel, a large-arm secondary driven wheel and a large-arm secondary synchronous belt;

the large arm primary driving wheel is arranged on an output shaft of the large arm driving motor, the large arm primary driven wheel is arranged on the large arm transmission shaft, and the large arm primary synchronous belt is arranged on the large arm primary driving wheel and the large arm primary driven wheel; the large arm secondary driving wheel is arranged on the large arm transmission shaft, the large arm secondary driven wheel is arranged on the large arm driving shaft, and the large arm secondary synchronous belt is arranged on the large arm secondary driving wheel and the large arm secondary driven wheel;

the small arm primary synchronous belt pulley comprises a small arm primary driving wheel, a small arm primary driven wheel and a small arm primary synchronous belt, and the small arm secondary synchronous belt pulley comprises a small arm secondary driving wheel, a small arm secondary driven wheel and a small arm secondary synchronous belt;

the forearm one-level action wheel is located on forearm driving motor's the output shaft, the forearm one-level is located from the driving wheel on the forearm transmission shaft, the forearm one-level hold-in range is located the forearm one-level action wheel with the forearm one-level is from the driving wheel on, the forearm second grade action wheel is located on the forearm transmission shaft, the forearm second grade is located from the driving wheel on the forearm drive shaft, the forearm second grade hold-in range is located the forearm second grade action wheel with the forearm second grade is from the driving wheel on.

Wherein the base includes: a base plate; the first bearing piece and the second bearing piece are oppositely arranged on the bottom plate, a first mounting seat is formed on the first bearing piece, and a second mounting seat is formed on the second bearing piece.

The large arm primary driving wheel is arranged at the tail end of an output shaft of the large arm driving motor to form a first spare section, located between the large arm primary driving wheel and the first mounting seat, on the output shaft of the large arm driving motor;

the small arm primary driving wheel is arranged at the tail end of an output shaft of the small arm driving motor to form a second spare section, which is positioned between the small arm primary driving wheel and the second mounting seat, on the output shaft of the small arm driving motor;

the first mounting seat protrudes to a side opposite to the second bearing piece, and the second mounting seat protrudes to a side opposite to the first bearing piece.

The large arm transmission shaft comprises a first mounting section positioned at the tail end of the large arm transmission shaft, the large arm secondary driving wheel is positioned on the first mounting section, a first threaded through hole is formed in the middle area of the large arm primary driven wheel, and a first threaded hole matched with the first threaded through hole is formed in the tail end face of the large arm transmission shaft;

the small arm transmission shaft comprises a second mounting section located at the tail end of the small arm transmission shaft, the small arm secondary driving wheel is located on the second mounting section, a second threaded through hole is formed in the middle area of the small arm primary driven wheel, and a second threaded hole matched with the second threaded through hole is formed in the tail end face of the small arm transmission shaft.

The first bearing piece is provided with a first through hole, a first fixed seat arranged corresponding to the first through hole and two first bearings positioned on the first fixed seat, the first fixed seat is provided with a first bearing mounting hole, the two first bearings are arranged in the first bearing mounting hole at intervals, the large arm transmission shaft penetrates through the first through hole, the large arm transmission shaft further comprises a first connecting section in interference fit with inner rings of the two first bearings, and a first shaft sleeve positioned between the two first bearings is arranged on the first connecting section;

the second holds and is equipped with the second through-hole on the carrier, with second through-hole corresponds the second fixing base of arranging and is located two second bearings on the second fixing base, be equipped with the second bearing mounting hole on the second fixing base, two second bearing interval arrangements are in the second bearing mounting hole, the forearm transmission shaft passes the second through-hole sets up, the forearm transmission shaft still include with the inner ring interference fit's of two second bearings second linkage segment, be equipped with on the second linkage segment and be located second bushing between two second bearings.

The first bearing piece is provided with a third bearing mounting hole and a third bearing positioned in the third bearing mounting hole, and the large arm driving shaft is in interference fit with an inner ring of the third bearing;

the second holds carrier and is last still to be equipped with the fourth bearing mounting hole, to be located fourth bearing in the bearing mounting hole and with the big arm driven shaft of the inner ring interference fit of fourth bearing, be equipped with fifth bearing mounting hole on the big arm driven shaft and to be located fifth bearing in the fifth bearing mounting hole, the forearm drive shaft with the inner ring interference fit of fifth bearing and its both ends are followed wear out in the fifth bearing mounting hole.

The first bearing piece is provided with a first bearing mounting hole, the first bearing mounting hole is arranged on the first bearing piece, the first bearing mounting hole is abutted to an outer ring of a third bearing, a plurality of third threaded through holes are formed in the middle area of the large arm secondary driven wheel, and a third threaded through hole matched with the third threaded through holes is formed in the tail end face of the large;

the second holds and still is equipped with the correspondence on the carrier the second annular apron that the fourth bearing mounting hole was arranged, the second annular apron with the outer loop butt of fourth bearing, still be equipped with the correspondence on the big arm driven spindle the third annular apron that the fifth bearing mounting hole was arranged, the third annular apron with the outer loop butt of fifth bearing, the forearm second grade is equipped with fourth screw through-hole from the middle zone of driving wheel, the terminal surface of forearm drive shaft be equipped with the fourth screw hole of fourth screw through-hole looks adaptation.

Wherein, desktop arm drive structure still includes: an actuator motor;

the actuating motor is servo motor, actuating motor includes absolute value encoder and electromagnetism band-type brake ware, the electromagnetism band-type brake ware is the electromagnetism band-type brake ware of outage band-type brake.

Wherein, desktop arm drive structure still includes: a control panel;

the control panel is respectively connected with the rotary table driving motor, the large arm driving motor, the small arm driving motor and the execution motor.

The present invention further provides a desktop robot, including the desktop robot driving structure described in the foregoing embodiments, where the desktop robot driving structure includes: a base and a turntable;

Wherein the tabletop mechanical arm further comprises an end effector connected with the small arm through the tail end.

The present invention further provides a robot, including the tabletop robot arm described in each of the foregoing embodiments, where the tabletop robot arm includes the tabletop robot arm driving structure described in each of the foregoing embodiments, and the tabletop robot arm driving structure includes: a base and a turntable;

Compared with the prior art, the embodiment of the invention has the beneficial technical effects that:

according to the desktop mechanical arm driving structure provided by the embodiment of the invention, the turntable driving shaft and the turntable driving motor are arranged in the base in a staggered manner, so that compared with the existing coaxial arrangement, the overall height of the desktop mechanical arm can be reduced, the gravity center height of the desktop mechanical arm is reduced, the desktop mechanical arm is further ensured not to shake or turn over when grabbing heavy objects, and the stability of the desktop mechanical arm can be improved. In addition, big arm driving motor and forearm driving motor set up the rear side at the base, and be provided with big arm and forearm in the front side of base to through big arm driving motor and the forearm driving motor that are located the base rear side with be located the big arm and the forearm balance of base front side, thereby guarantee that the focus of desktop arm is located the center of base, and then guarantee the steady operation of desktop arm.

Drawings

FIG. 1 is a schematic diagram of a prior art tabletop arm configuration;

FIG. 2 is a schematic view of another prior art tabletop arm configuration;

FIG. 3 is a schematic diagram illustrating an embodiment of a table top robot driving structure according to the present invention;

FIG. 4 is an exploded view of the tabletop arm drive configuration shown in FIG. 3;

FIG. 5 is a schematic view of the internal structure of the base of the robot arm driving mechanism of the present invention;

FIG. 6 is an assembly structure view of a turntable driving motor, a turntable driving shaft and a turntable deceleration assembly of the driving structure of the table top mechanical arm of the present invention;

FIG. 7 is an exploded view of a turntable drive motor, a turntable drive shaft and a turntable deceleration assembly of the tabletop robot arm drive structure of the present disclosure;

FIG. 8 is a cross-sectional view of the base of the drive mechanism of the robot arm of the tabletop of the invention;

FIG. 9 is an exploded view of the base of the robot arm drive structure of the present invention;

FIG. 10 is a schematic view of a turntable of the robot arm driving mechanism of the present invention;

FIG. 11 is a partial cross-sectional view of a base of a table top robot drive configuration of the present invention;

FIG. 12 is a partial cross-sectional view of a base of a table top robot drive configuration of the present invention;

FIG. 13 is a bottom view of a base of a tabletop robot drive mechanism of the present disclosure;

FIG. 14 is a schematic diagram of a first tensioning mechanism of the tabletop robot drive configuration of the present invention;

FIG. 15 is a schematic view of an assembly structure of a turntable, a large arm and a small arm of the table top mechanical arm driving structure according to the present invention;

FIG. 16 is an enlarged partial schematic view at C of FIG. 15;

FIG. 17 is a schematic diagram illustrating a portion of a turntable of a tabletop robot drive mechanism according to the present invention;

FIG. 18 is a schematic view of a portion of a turntable of a table top robot drive configuration of the present invention;

FIG. 19 is an exploded view of the base of the robot arm drive mechanism of the present invention;

FIG. 20 is a schematic view of a portion of an exploded view of a turret of the robot arm drive configuration of the present invention;

FIG. 21 is a schematic illustration of a further exploded view of a turntable of a tabletop robot drive configuration of the present invention;

fig. 22 is a schematic structural diagram of a table top robot according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

The table top mechanical arm is a subdivision of mechanical arms, has strong adaptability and dynamic problem solving capability, and is widely applied to the teaching field, generally, the table top mechanical arm comprises a base, a rotary table, a large arm, a small arm, a tail end, a rotary table driving motor, a large arm driving motor and a small arm driving motor, wherein the rotary table is rotatably connected with the base, the large arm is respectively connected with the rotary table and the small arm, the small arm is connected with the tail end, the tail end is used for arranging an actuator, the rotary table driving motor is used for driving the rotary table to rotate relative to the base, the large arm driving motor is used for driving the large arm to move, the small arm driving motor is used for driving the small arm to move, and the large arm and the small arm can drive the tail end to move in a working space by utilizing a parallelogram principle, for example.

In addition, a turntable driving motor and a turntable driving shaft of an existing tabletop robot arm are coaxially arranged up and down, for example, a vertical inverted compact four-axis robot disclosed in chinese patent application No. cn201810921858.x, see fig. 2, which includes a first axis motor 01, a turntable connecting plate 02 and a turntable 03 sequentially arranged from top to bottom, where the first axis motor 01 is equivalent to the turntable driving motor, the turntable connecting plate 02 is equivalent to the turntable driving shaft, the turntable 03 is equivalent to the turntable, and the first axis motor 01 and the turntable connecting plate 02 are coaxial up and down, which may cause the overall height of the robot to be increased, and further cause the center of gravity of the robot to be increased, so that the robot may easily shake or turn over when grabbing heavy objects.

In order to solve the above technical problem, the present invention provides a desktop robot driving structure, in an embodiment, referring to fig. 3 to 5, the desktop robot driving structure including: a base 1 and a turntable 2;

a turntable driving motor 3 and a turntable driving shaft 4 are arranged in the base 1, the turntable driving motor 3 is in transmission connection with the turntable driving shaft 4, the turntable driving shaft 4 is in transmission connection with the turntable 2, the turntable driving shaft 4 is arranged in the central area of the base 1, and the turntable driving motor 3 is arranged around the turntable driving shaft 4 in a staggered manner;

the turntable 2 comprises a base 21, a large arm driving motor 5 and a small arm driving motor 6 are arranged on the turntable 2, and the large arm driving motor 5 and the small arm driving motor 6 are arranged on the rear side of the base 21.

In this embodiment, the base 1 is configured to be rectangular, a containing cavity is configured in the rectangular base 1, the containing cavity is used for installing the turntable driving motor 3 and the turntable driving shaft 4, and the turntable driving shaft 4 is a hollow rotating shaft so as to route cables between the base 1 and the large arm driving motor 5 and the small arm driving motor 6 through the hollow rotating shaft. The turntable driving shaft 4 is located in the central area of the accommodating cavity, the turntable driving motor 3 is located around the turntable driving shaft 4, staggered arrangement is formed in the accommodating cavity of the base 1, the turntable driving shaft 4 and the turntable driving motor 3 can reduce the overall height of the desktop mechanical arm, the gravity center of the desktop mechanical arm is reduced, and therefore the desktop mechanical arm is guaranteed not to shake or turn on one side when grabbing heavy objects.

Revolving stage driving motor 3 can just adorn, also can the flip-chip, and the technical personnel in the field can design according to actual conditions, and it only needs to guarantee revolving stage driving motor 3 and revolving stage drive shaft 4 dislocation arrangement in base 1. When the turntable driving motor 3 is positively installed, the output shaft of the turntable driving motor faces the upper side of the base 1, and when the turntable driving motor 3 is inversely installed, the output shaft of the turntable driving motor faces the lower side of the base 1. Preferably, the turntable driving motor 3 according to the embodiment of the present invention is disposed in the base 1 in a front-mounted manner, which is merely exemplary and not restrictive.

The turntable 2 comprises a base 21, a large arm 500 and a small arm 2000 used for grabbing articles are arranged on the front side of the base 21, a large arm driving motor 5 and a small arm driving motor 6 are arranged on the rear side of the base 21, balance is formed between the large arm driving motor 5 and the small arm driving motor 6 and between the large arm 500 and the small arm 2000, the center position of the gravity center of the desktop mechanical arm is prevented from deviating from the center position of the base 1, and therefore the desktop mechanical arm is guaranteed not to shake or turn over due to the fact that the gravity center deviates from one side of the large arm 500 and the small arm 2000 when grabbing heavy objects.

In an embodiment, referring to fig. 4, the table top robot driving structure according to the embodiment of the present invention further includes:

the turntable driving motor 3 is in transmission connection with the turntable driving shaft 4 through the turntable speed reducing assembly 7;

the large arm speed reducing assembly 8 is in transmission connection with the large arm driving motor 5;

and the small arm speed reducing assembly 9 is in transmission connection with the small arm driving motor 6.

In this embodiment, the turntable driving shaft 4 is in speed reduction transmission through the turntable speed reduction assembly 7, and the turntable speed reduction assembly 7 plays a role in matching rotating speed and transmitting torque. Specifically, the torque generated by the turntable driving motor 3 is transmitted to the turntable speed reducing assembly 7, then the rotating speed of the transmitted torque is matched by the turntable speed reducing assembly 7, and then the torque after the rotating speed is matched is transmitted to the turntable driving shaft 4, so that the turntable driving shaft 4 drives the turntable 2 to rotate. The torque generated by the large arm driving motor 5 is also transmitted to the large arm speed reducing assembly 8, then the large arm speed reducing assembly 8 matches the rotating speed of the transmitted torque, and then the torque after matching the rotating speed is transmitted to the large arm 500 to drive the large arm 500 to rotate. The torque generated by the forearm driving motor 6 is also transmitted to the forearm deceleration assembly 9, the rotation speed of the transmitted torque is matched by the forearm deceleration assembly 9, and then the torque after the rotation speed is matched is transmitted to the forearm 2000 to drive the rotation of the forearm 2000.

In another embodiment, referring to fig. 6, the turntable deceleration assembly 7 proposed by the embodiment of the present invention includes a turntable primary synchronous pulley 71 and a turntable secondary synchronous pulley 72; one end of the turntable primary synchronous belt pulley 71 is in transmission connection with the turntable driving motor 3, the other end of the turntable primary synchronous belt pulley is in transmission connection with one end of the turntable secondary synchronous belt pulley 72, and the other end of the turntable secondary synchronous belt pulley 72 is in transmission connection with the turntable driving shaft 4. In this embodiment, the turntable deceleration component 7 includes a turntable primary synchronous pulley 71 and a turntable secondary synchronous pulley 72, and the turntable primary synchronous pulley 71 and the turntable secondary synchronous pulley 72 perform secondary deceleration on the torque generated by the turntable driving motor 3, so as to ensure that the decelerated torque can meet the use requirement of the turntable driving shaft 4. Specifically, the torque generated by the turntable driving motor 3 is firstly subjected to primary speed reduction by the turntable primary synchronous pulley 71, the torque subjected to the primary speed reduction is subjected to secondary speed reduction by the turntable secondary synchronous pulley 72, and the torque subjected to the secondary speed reduction is transmitted to the turntable driving shaft 4 so as to drive the turntable 2 to rotate through the turntable driving shaft 4.

In another embodiment, referring to fig. 4 and 8, the base 1 according to the embodiment of the present invention is configured with a partition plate 11 extending in a horizontal direction, a turntable primary synchronous pulley 71 is disposed on a top surface of the partition plate 11, a turntable driving motor 3 is disposed below a bottom surface of the partition plate 11, an output shaft of the turntable driving motor 3 penetrates through the partition plate 11 to be in transmission connection with one end of the turntable primary synchronous pulley 71, and a turntable secondary synchronous pulley 72 is disposed on the bottom surface of the partition plate 11. In the present embodiment, at this time, according to the arrangement state of the base 1, as shown in fig. 8, a represents the top surface of the partition 11, B represents the bottom surface of the partition 11, and it is preferable that the partition 11 is horizontally provided in the base 1 to divide the internal space of the base 1 into two spaces, and it is preferable that the distance between the partition 11 and the top of the base 1 is smaller than the distance between the partition 11 and the bottom of the base 1, and the turntable primary timing pulley 71 is provided on the top surface of the partition 11, and the turntable secondary timing pulley 72 and the turntable driving motor 3 are both provided on the bottom surface of the partition 11. In this embodiment, the partition plate 11 is provided in the base 1 to mount the parts such as the turntable driving motor 3, the turntable primary-stage timing pulley 71, and the turntable secondary-stage timing pulley 72, which is advantageous for increasing the stability of fixing the above parts. In another embodiment, the turntable driving motor 3, the turntable primary synchronous pulley 71 and the turntable secondary synchronous pulley 72 may be mounted on the partition plate 11 in a manner that the partition plate 11 is detachably connected to the base 1, the turntable driving motor 3, the turntable primary synchronous pulley 71 and the turntable secondary synchronous pulley 72 are firstly fixed on the partition plate 11, and then the partition plate 11 is fixed in the base 1.

In another embodiment, referring to fig. 9, a mounting plate notch 12 is formed on one side of the base 1 according to an embodiment of the present invention, the base 1 further includes a mounting plate 13, the mounting plate 13 is disposed at the mounting plate notch 12, and the mounting plate 13 is formed with a plurality of interface bayonets 14. In this embodiment, an installation plate notch 12 is formed on one side of the base 1, the installation plate notch 12 is covered by an installation plate 13, and the installation plate 13 is provided with a plurality of interface bayonets 14 for installing circuit interfaces through the interface bayonets 14. Because the interface bayonet 14 provided by the embodiment of the invention is arranged on the mounting plate 13, and the mounting plate 13 is detachably connected with the base 1, when the circuit interface is changed, only the corresponding mounting plate 13 needs to be replaced, or the original mounting plate 13 is taken down and then the interface bayonet 14 corresponding to the newly added circuit interface is arranged on the mounting plate, and in addition, the base 1 can be conveniently dismounted, mounted and maintained.

In still another embodiment, referring to fig. 4 and 10, a baffle plate 11 according to an embodiment of the present invention is provided with a stop plate 10 on a side adjacent to a mounting plate 13, the stop plate 10 is located below a turntable 2, the turntable 2 is provided with a turntable limiting column 20 for abutting against the stop plate 10, and the turntable limiting column 20 is located on a side adjacent to a large arm 500 and a small arm 2000. In this embodiment, revolving stage drive shaft 4 is the hollow shaft, and the cable of desktop arm is walked through revolving stage drive shaft 4. It will be appreciated that the cable extending from the turntable drive shaft 4 is fixed at one end to the base 1 and at the other end to the turntable 2, and that the cable fixed to the turntable 2 will rotate when the turntable 2 is rotated by the turntable drive shaft 4. If the turntable 2 rotates continuously in the same direction, the cable is wound in the rotating direction, and the cable is broken during the continuous rotation of the turntable 2 in the same direction because the cable is fixed to the base 1 and the length of the cable is limited. For this purpose, the present embodiment is provided with a stopper plate 10 for limiting the rotation angle of the turntable driving shaft 4 on the partition plate 11, the stopper plate 10 is located in the circumferential direction of the turntable driving shaft 4, and a turntable limiting column 20 for abutting the stopper plate 10 is provided on the turntable driving shaft 4 or the turntable 2, so as to limit the rotation angle of the turntable driving shaft 4 by the abutting engagement of the turntable limiting column 20 and the stopper plate 10. Specifically, the stop plate 10 is located at the rear side of the turntable 2, and in the rotation process of the turntable driving shaft 4, if the turntable limiting column 20 contacts and abuts against the stop plate 10, the rotation of the turntable limiting column stops in the direction, so that the cable is prevented from being pulled apart due to the continuous rotation.

In still another embodiment, the stopper plate 10 according to the embodiment of the present invention includes a fixing portion connected to the partition plate 11 and a limiting portion extending toward the turntable driving shaft 4, and both sidewalls of the limiting portion are contracted toward the turntable driving shaft 4. In this embodiment, the fixing portion is connected to the partition 11, and the fixing portion is connected to a limiting portion extending toward the turntable driving shaft 4, so as to limit the rotation angle of the turntable 2 by the abutting engagement of the limiting portion and the stopper plate 10. Specifically, the terminal surface of spacing portion orientation revolving stage drive shaft 4 is the arc surface, this arc surface and revolving stage drive shaft 4's circumference cambered surface looks adaptation to avoid revolving stage drive shaft 4 to bump at the rotation in-process. Preferably, an included angle formed by intersecting extension lines of two side walls of the limiting portion provided by the embodiment of the present invention is in a range of 5 to 60 degrees, when the included angle is 5 degrees, a rotation angle of the turntable driving shaft 4 is 177.5 degrees, and when the included angle is 60 degrees, the rotation angle of the turntable driving shaft 4 is 150 degrees.

In another embodiment, referring to fig. 8, the turntable driving motor 3 according to the embodiment of the present invention is a servo motor, the turntable driving motor 3 includes an encoder, the encoder is a multi-turn absolute value encoder, and a battery mounting seat 900 electrically connected to the turntable driving motor 3 is further disposed in the base 1. In this embodiment, it is preferred that turntable driving motor 3 is servo motor to be favorable to improving the revolving precision of turntable driving motor 3 drive revolving stage 2 pivoted, be provided with the encoder simultaneously on the servo motor, thereby make things convenient for more to utilize encoder record servo motor's zero point position and number of turns, also be favorable to servo motor's the precision of zeroing operation with this, be favorable to improving the revolving precision of turntable driving motor 3 drive revolving stage 2 pivoted equally.

Simultaneously, preferred encoder is many rings of absolute value encoder, and still be provided with in the base 1 with many rings of absolute value encoder electric connection's battery mount pad 900 to conveniently install the battery in battery mount pad 900 with supplying power to many rings of absolute value encoders. In this embodiment, relative to a single-turn encoder, a multi-turn encoder can sense not only the absolute angular position within one turn, but also how many turns the encoder has rotated since the date of use.

In another embodiment, the large arm driving motor 5 and the small arm driving motor 6 proposed in the embodiment of the present invention are servo motors including absolute value encoders and electromagnetic band brakes, and the large arm driving motor 5 and the small arm driving motor 6 are electrically connected to the battery mounting base 900, respectively. In this embodiment, the electromagnetic band-type brake can stop the rotation of the large arm driving motor 5 and the small arm driving motor 6 rapidly after power failure for mechanical braking, so that the large arm 500 and the small arm 2000 of the desktop mechanical arm can be prevented from dropping automatically after power failure, and safety is improved. The encoder is arranged at the opposite end of the extending end of the output shaft of the motor and is connected with the output shaft, and the zero position of the motor is recorded through the encoder so as to help the motor to return to zero.

In another embodiment, the absolute value encoder provided in the embodiments of the present invention is a multi-turn absolute value encoder, and the electromagnetic band brake is an electromagnetic band brake of a power-off band brake. In this embodiment, relative to a single-turn encoder, a multi-turn encoder can sense not only the absolute angular position within one turn, but also how many turns the encoder has rotated since the date of use.

In still another embodiment, referring to fig. 11, the turntable driving shaft 4 according to the embodiment of the present invention is provided on the partition plate 11 through a thrust bearing 30. In this embodiment, it is preferred that the revolving stage drive shaft 4 is provided on the partition plate 11 through the thrust bearing 30, and the revolving stage speed reduction assembly 7 (i.e., the revolving stage secondary synchronous pulley 72) is in transmission connection with the revolving stage 2 through the revolving stage drive shaft 4, thereby avoiding the revolving stage speed reduction assembly 7 from directly bearing the weight of the revolving stage 2, thereby being beneficial to prolonging the service life of the revolving stage speed reduction assembly 7, namely, the output shaft of the revolving stage speed reduction assembly 7 directly needs to directly bear the weight of the revolving stage 2 when being connected with the revolving stage 2, thereby making the revolving stage speed reduction assembly 7 bear a large force, thereby equivalently promoting the load weight of the revolving stage speed. At this time, the turntable driving shaft 4 is preferably located at the center of the partition plate 11.

In still another embodiment, referring to fig. 11, the partition 11 according to the embodiment of the present invention is configured with a receiving cavity 40, the receiving cavity 40 is configured with a receiving structure 50 adapted to a lower edge of an outer ring of the thrust bearing 30, the thrust bearing 30 is disposed in the receiving cavity 40, the lower edge of the outer ring of the thrust bearing 30 is connected to the receiving structure 50, the turntable driving shaft 4 is vertically inserted into the inner ring of the thrust bearing 30 from top to bottom, the turntable driving shaft 4 is configured with a bearing section 41, an insertion section 42 and a connecting section 43, the bearing section 41 is connected to an upper edge of the inner ring of the thrust bearing 30, the insertion section 42 is connected to the inner ring of the thrust bearing 30, and the connecting section 43 is in transmission connection with the turntable secondary synchronous pulley 72. In this embodiment, preferably, the central position of the partition 11 is configured with an accommodating cavity 40 for installing the thrust bearing 30, and the bottom of the cavity is provided with a bearing structure capable of bearing the lower edge of the outer ring of the thrust bearing 30, at this time, the preferred bearing structure is a ring body, and after the thrust bearing 30 is installed in the accommodating cavity 40, the bearing structure 50 can be abutted against the lower edge of the outer ring of the thrust bearing 30, so as to achieve the purpose of bearing the thrust bearing 30, and the turntable driving shaft 4 is inserted into the inner ring of the thrust bearing 30 from top to bottom in the vertical direction. Meanwhile, the turntable driving shaft 4 is divided into a connecting section 43, an inserting section 42 and a bearing section 41 (i.e. the diameter of the inserting section 42 is smaller than that of the bearing section 41, and at this time, the diameter of the connecting section 43 is preferably the same as that of the inserting section 42), wherein the inserting section 42 can be inserted into the inner ring of the thrust bearing 30, the connecting section 43 passes through the thrust bearing 30 and is in transmission connection with the turntable secondary synchronous pulley 72, and one end of the bearing section 41 close to the inserting section 42 can be abutted against the upper edge of the inner ring of the thrust bearing 30, so that the thrust bearing 30 bears the weight of the turntable 2.

In another embodiment, referring to fig. 11, the table top robot driving structure according to the embodiment of the present invention further includes a bearing pressing plate 60, the bearing pressing plate 60 is configured as a hollow ring, the bearing pressing plate 60 is disposed on the thrust bearing 30 and abuts against an outer ring of the thrust bearing 30, and the bearing pressing plate 60 is fixedly connected to the partition 11. In this embodiment, the base 1 further preferably includes a bearing pressing plate 60, and the bearing pressing plate 60 is preferably an annular plate, the bearing pressing plate 60 can be sleeved on the bearing section 41, and at this time, the bearing pressing plate 60 can close the open end of the accommodating cavity 40 and can abut against the upper edge of the outer ring of the thrust bearing 30. It is preferable that the bearing retainer 60 be detachably connected to the partition 11, such as by screws, to prevent the thrust bearing 30 in the receiving cavity 40 from slipping out.

In still another embodiment, the thrust bearing 30 according to the present invention is a double row angular contact bearing. In this embodiment, the thrust bearing 30 is preferably a double row angular contact bearing, and the double row angular contact bearing occupies only a small axial space, which is advantageous for reducing the length of the turntable drive shaft 4 and further reducing the height of the base 1. Meanwhile, the double-row angular contact ball bearing can provide a bearing configuration with higher rigidity and can bear overturning moment.

In another embodiment, referring to fig. 7, the turntable primary synchronous pulley 71 according to an embodiment of the present invention includes a turntable primary driving pulley 711, a turntable primary driven pulley 712, and a turntable primary synchronous belt 713, where the turntable primary driving pulley 711 and the turntable primary driven pulley 712 are in transmission connection through the turntable primary synchronous belt 713; the turntable secondary synchronous pulley 72 comprises a turntable secondary driving pulley 721, a turntable secondary driven pulley 722 and a turntable secondary synchronous belt 723, and the turntable secondary driving pulley 721 and the turntable secondary driven pulley 722 are in transmission connection through the turntable secondary synchronous belt 723. In this embodiment, it is preferable that the turntable primary synchronous pulley 71 includes a turntable primary driving wheel 711, a turntable primary driven wheel 712, and a turntable primary synchronous belt 713, wherein the turntable primary driving wheel 711 is sleeved on an output shaft of the turntable driving motor 3, the turntable primary driven wheel 712 is disposed on the partition plate 11 through a transmission shaft of the turntable 2, and the turntable primary synchronous belt 713 is respectively connected to the turntable primary driving wheel 711 and the turntable primary driven wheel 712, and the transmission ratio between the turntable primary driving wheel 711 and the turntable primary driven wheel 712 is set according to a condition of speed reduction required in practice.

Preferably, the turntable secondary synchronous pulley 72 includes a turntable secondary driving wheel 721, a turntable secondary driven wheel 722 and a turntable secondary synchronous belt 723, wherein the turntable secondary driving wheel 721 is sleeved on the turntable 2 transmission shaft (at this time, one end of the turntable 2 transmission shaft penetrates through the partition plate 11 from top to bottom), the turntable secondary driven wheel 722 is sleeved on the turntable driving shaft 4 (at this time, one end of the turntable driving shaft 4 penetrates through the partition plate 11 from top to bottom), the turntable secondary synchronous belt 723 is connected with the turntable secondary driving wheel 721 and the turntable secondary driven wheel 722 respectively, and the transmission ratio of the turntable secondary driving wheel 721 to the turntable secondary driven wheel 722 is arranged according to the condition of speed reduction required in practice.

In another embodiment, referring to fig. 12, the base 1 according to the embodiment of the present invention further includes a turntable transmission shaft 70, and the partition 11 is configured with a shaft hole for the turntable transmission shaft 70 to pass through, the turntable transmission shaft 70 includes a mounting sleeve 701, two bearings 702, and a shaft body 703, the two bearings 702 are respectively disposed at two ends of the mounting sleeve 701 in an interference fit manner, the shaft body 703 is disposed inside the mounting sleeve 701 and simultaneously connected to inner rings of the two bearings 702, one end of the shaft body 703 is connected to the primary turntable driven wheel 712 through the shaft hole, and the other end is connected to the secondary turntable driving wheel 721. In this embodiment, the turntable drive shaft 70 preferably includes a mounting sleeve 701, a shaft body 703 and two bearings 702, the shaft body 703 is mounted in the mounting sleeve 701 through the two bearings 702, the mounting sleeve 701 is fixed on the partition plate 11, preferably, the mounting sleeve 701 is located below the partition plate 11, and the partition plate 11 has a shaft hole corresponding to the mounting sleeve 701 so that the shaft body 703 mounted in the mounting sleeve 701 passes through the shaft hole. At this time, the primary turntable driven wheel 712 is connected to the end of the shaft body 703 above the partition 11, and the secondary turntable driving wheel 721 is connected to the end of the shaft body 703 below the partition 11.

In another embodiment, referring to fig. 13 and 14, the table top robot driving structure according to an embodiment of the present invention further includes:

a plurality of first set screws and a first tensioning mechanism 90;

the partition plate 11 is provided with a plurality of first kidney-shaped holes 111, and first fixing screws are fixedly connected with the mounting sleeve 701 through the first kidney-shaped holes 111;

the first tensioning mechanism 90 includes a first bracket 901 and a first rotating bolt 902, the first bracket 901 is configured with a first connecting end and a first threaded end, the first tensioning mechanism 90 is fixedly connected with the partition plate 11 through the first connecting end, the first tensioning mechanism 90 is located below the partition plate 11, the first rotating bolt 902 is rotatably connected with the first threaded end, a screw head of the first rotating bolt 902 is arranged close to the mounting sleeve 701, the position of the first rotating bolt 902 in the horizontal direction can be adjusted by rotating the first rotating bolt 902, the screw head of the first rotating bolt 902 is abutted against the mounting sleeve 701, and the mounting sleeve 701 is moved along a track corresponding to the first kidney-shaped hole 111 by pressing the mounting sleeve 701.

In this embodiment, it is preferable that the partition 11 has a plurality of first kidney-shaped holes 111, and at this time, the mounting sleeve 701 may be connected to a first fixing screw passing through the first kidney-shaped holes 111, so as to fix the mounting sleeve 701 on the partition 11, and meanwhile, the first fixing screw may be used to move in the first kidney-shaped hole 111, so as to drive the secondary driving wheel 721 of the turntable located on the shaft body 703 to move toward or away from the secondary driven wheel 722 of the turntable, thereby facilitating adjustment of the tension of the secondary timing belt 723 of the turntable.

Meanwhile, a first tensioning mechanism 90 is further arranged in the base 1, the first tensioning mechanism 90 is arranged on the bottom surface of the partition plate 11 and is located between the turntable secondary driving wheel 721 and the turntable secondary driven wheel 722, the first tensioning mechanism 90 comprises a first support 901 and a first rotating bolt 902, the first support 901 is connected with the partition plate 11 and comprises a first connecting end and a first threaded end, the first connecting end is connected with the partition plate 11, the first rotating bolt 902 is in threaded fit with the first threaded end, so that the screw head of the first rotating bolt 902 can be abutted to the mounting sleeve 701, and the abutted position can be arranged according to actual conditions. In this embodiment, when the turntable transmission shaft 70 is installed, first, the first fixing screw passes through the first kidney-shaped hole 111 to be connected with the installation sleeve 701, but the first fixing screw is not completely fastened, so that the turntable transmission shaft 70 can move in the first kidney-shaped hole 111 along with the first fixing screw, at this time, the turntable transmission shaft 70 can be driven to drive the turntable secondary driving wheel 721 to move away from the turntable secondary driven wheel 722 by screwing the first rotating screw 902, thereby changing the tension of the turntable secondary synchronous belt 723, when the tension of the turntable secondary synchronous belt 723 is in a proper state (i.e., the turntable transmission shaft 70 moves to a preset position), the installation sleeve 701 is fixed by using the first fixing screw, thereby facilitating the installation of the turntable transmission shaft 70, and meanwhile, the stability of the turntable transmission shaft 70 during operation can also be increased by abutting the first rotating screw 902 against the installation sleeve 701.

In still another embodiment, referring to fig. 11, a secondary turntable driven wheel 722 according to an embodiment of the present invention is detachably connected to the connecting section 43, the secondary turntable driven wheel 722 is configured with an abutting structure 100, the abutting structure 100 is configured in a ring shape adapted to the connecting section 43, the abutting structure 100 abuts against a lower edge of an inner ring of the thrust bearing 70230 when the secondary turntable driven wheel 722 is fixedly connected to the connecting section 43, the secondary turntable driven wheel 722 is provided with a connecting structure 200, the connecting structure 200 is a plurality of threaded through holes, and the connecting section 43 is configured with threaded holes adapted to the threaded through holes. In this embodiment, the secondary turntable driven wheel 722 is sleeved on the turntable driving shaft 4 (i.e. the insertion section 42), and the secondary turntable driven wheel 722 is provided with the connecting structure 200 located right below the turntable driving shaft 4. At this time, the connection structure 200 is a plurality of threaded through holes provided on the second-stage driven wheel 722 of the turntable, and the bottom of the turntable driving shaft 4 is provided with a threaded hole capable of being matched with the threaded through hole, and at this time, the second-stage driven wheel 722 of the turntable can be fixed on the turntable driving shaft 4 by passing screws through the threaded through holes and the threaded holes in sequence.

The abutment structure 100 is preferably arranged on the secondary driven wheel 722 of the turntable, and the abutment structure 100 is preferably a sleeve structure and can be sleeved on the driving shaft 4 of the turntable, and the top of the abutment structure 100 can abut against the lower edge of the inner ring of the thrust bearing 70230. At this time, it is preferable that a preset distance is provided between the top surface of the connection structure 200 and the bottom surface of the turntable driving shaft 4, that is, a certain gap is provided between the connection structure 200 and the bottom of the turntable driving shaft 4, and since a certain error exists in the process, in order to avoid that the abutment structure 100 cannot abut against the lower edge of the inner ring of the thrust bearing 70230 when the connection structure 200 abuts against the bottom of the turntable driving shaft 4, the above situation can be avoided by using a certain gap between the connection structure 200 and the bottom of the turntable driving shaft 4, so that the thrust bearing 70230 is clamped by using the abutment structure 100 and the bearing section 41, and the thrust bearing 30 is prevented from sliding on the insertion section 42.

In another embodiment, referring to fig. 11, the desktop robot driving structure according to the embodiment of the present invention further includes a positioning pin 300, the connecting section 43 is provided with a positioning hole, the secondary driven wheel 722 of the turntable is provided with a positioning through hole, and the positioning pin 300 is inserted into the positioning hole through the positioning through hole. In this embodiment, the base 1 further includes a positioning pin 300, the bottom of the connecting section 43 is provided with a positioning hole, the secondary driving wheel 722 of the turntable is provided with a positioning through hole, and the positioning pin 300 can sequentially pass through the positioning through hole and the positioning hole to position the secondary driving wheel 722 of the turntable on the connecting section 43, so as to facilitate the fixation of the secondary driving wheel 722 of the turntable.

In another embodiment, referring to fig. 13, the table top robot driving structure according to the embodiment of the present invention further includes:

a plurality of second set screws and a second tensioning mechanism 400;

the partition plate 11 is provided with a plurality of second kidney-shaped holes 112, and second fixing screws are fixedly connected with the turntable driving motor 3 through the second kidney-shaped holes 112;

the second tensioning mechanism 400 includes a second support and a second rotating bolt, the second support is configured with a second connecting end and a second threaded end, the second tensioning mechanism 400 is fixedly connected with the partition plate 11 through the second connecting end, the second tensioning mechanism 400 is located below the partition plate 11, the second rotating bolt is rotatably connected with the threaded end, a screw head of the second rotating bolt is arranged close to the turntable driving motor 3, the position of the second rotating bolt in the horizontal direction can be adjusted by rotating the second rotating bolt, the screw head of the second rotating bolt is abutted against the turntable driving motor 3, and the turntable driving motor 3 is moved along a track corresponding to the second kidney-shaped hole 112 by extruding the turntable driving motor 3.

In this embodiment, it is preferable that the partition board 11 has a plurality of second kidney-shaped holes 112, at this time, the turntable driving motor 3 may be connected to a second fixing screw passing through the second kidney-shaped holes 112, so as to fix the turntable driving motor 3 on the partition board 11, and meanwhile, the second fixing screw may be moved in the second kidney-shaped holes 112, so as to drive the turntable primary driving wheel 711 on the turntable driving motor 3 to move toward or away from the turntable primary driven wheel 712, thereby facilitating to adjust the tension of the turntable primary timing belt 713. At this time, it is preferable that the turntable driving motor 3 has a screw hole to be engaged with the second fixing screw, so that the turntable driving motor 3 can be fixed without providing a nut.

Meanwhile, a second tensioning mechanism 400 is further arranged in the base 1, the second tensioning mechanism 400 is arranged on the bottom surface of the partition plate 11 and is located between the turntable first-level driving wheel 711 and the turntable first-level driven wheel 712, the second tensioning mechanism 400 comprises a second support and a second rotating bolt which are connected with the partition plate 11, the second support comprises a second connecting end and a second threaded end, the second connecting end is connected with the partition plate 11, the second rotating bolt is in threaded fit with the second threaded end, so that the screw head of the second rotating bolt can be abutted to the turntable driving motor 3, and the abutted position can be arranged according to actual conditions. In this embodiment, when the turntable driving motor 3 is installed, the second fixing screw is first connected to the turntable driving motor 3 through the second kidney-shaped hole 112 without completely fastening the second fixing screw, so that the turntable driving motor 3 can move in the second kidney-shaped hole 112 along with the second fixing screw, and at the moment, the turntable driving motor 3 can be driven to drive the turntable primary driving wheel 711 to move away from the turntable primary driven wheel 712 by screwing the second rotating bolt, thereby changing the tension degree of the turntable primary synchronous belt 713, when the tension of the primary timing belt 713 of the turntable is in a proper state (i.e. the turntable driving motor 3 moves to a preset position), the turntable driving motor 3 is fixed by using a second fixing screw, thereby made things convenient for revolving stage driving motor 3's installation, utilized the second to rotate the bolt and also can increase the stability when revolving stage driving motor 3 moves with revolving stage driving motor 3 butt simultaneously. Wherein the structure of the second tensioning mechanism 400 is similar to that of the first tensioning mechanism 90.

In another embodiment, referring to fig. 15 and 16, the base 21 according to the embodiment of the present invention is provided with two limiting members 600 located at the front and rear sides of the large arm 500, and the limiting members 600 are used to form an abutting engagement with the stopping block 700 provided at the end of the large arm 500. In this embodiment, when the large arm 500 rotates, the stop block 700 thereon is driven to rotate, and when the stop block 700 rotates to the position of the position-limiting member 600, the position-limiting member 600 blocks the position, so as to form a rotational position-limiting function for the large arm 500.

In another embodiment, the large arm driving motor 5 and the small arm driving motor 6 according to the embodiment of the present invention are stacked up and down, and the large arm deceleration assembly 8 and the small arm deceleration assembly 9 are respectively located on the left and right outer side surfaces of the base 21. In this embodiment, the upper arm driving motor 5 and the lower arm driving motor 6 are preferably arranged in a vertically stacked manner, which optimizes the spatial layout, saves space, improves the structural compactness, and facilitates the miniaturization and the portability of the desktop mechanical arm, and the upper arm deceleration assembly 8 and the lower arm deceleration assembly 9 are respectively arranged on the left outer side surface and the right outer side surface of the base 21, thereby simplifying the structural design, simplifying the disassembly and assembly, and facilitating the daily maintenance.

In still another embodiment, referring to fig. 17 and 18, the large arm speed reduction assembly 8 according to the embodiment of the present invention includes a large arm primary timing pulley 81 and a large arm secondary timing pulley 82 provided adjacent to the base 21; the arm speed reduction assembly 9 includes an arm primary timing pulley 91 and an arm secondary timing pulley 92 provided adjacent to the base 21. In this embodiment, the large arm secondary synchronous pulley 82 of the large arm deceleration component 8 is arranged close to the base 21, that is, the large arm secondary synchronous pulley 82 is located between the large arm primary synchronous pulley 81 and the base 21; forearm secondary synchronous pulley 92 of forearm speed reduction subassembly 9 closes on base 21 and arranges, forearm secondary synchronous pulley 92 is located between forearm primary synchronous pulley 91 and base 21 promptly, can realize keeping away from of structure (like motor fixed screw etc.) on forearm primary synchronous belt and the revolving stage 2 and arrange, not only can not take place the structure and interfere, still can remove auxiliary assembly's setting from, reduce manufacturing cost, and because of the structure restriction that does not have auxiliary assembly, the size of one-level synchronous pulley's band pulley can be done greatly, thereby improve speed reduction ratio and speed reduction effect, guarantee control accuracy.

In still another embodiment, referring to fig. 17 and 18, the large arm speed reduction assembly 8 according to the embodiment of the present invention further includes a large arm transmission shaft 83 and a large arm drive shaft 84, the large arm drive shaft 84 is located above the large arm transmission shaft 83, the large arm primary synchronous pulley 81 is disposed between the output shaft of the large arm drive motor 5 and the large arm transmission shaft 83, and the large arm secondary synchronous pulley 82 is disposed between the large arm transmission shaft 83 and the large arm drive shaft 84;

the small arm speed reducing assembly 9 further comprises a small arm transmission shaft 93 and a small arm driving shaft 94, the small arm driving shaft 94 is positioned above the small arm transmission shaft 93, the small arm primary synchronous pulley 91 is arranged between the output shaft of the small arm driving motor 6 and the small arm transmission shaft 93, and the small arm secondary synchronous pulley 92 is arranged between the small arm transmission shaft 93 and the small arm driving shaft 94.

Specifically, the large arm driving shaft 84 is used for being connected with the large arm 500, and an output shaft of the large arm driving motor 5 drives the large arm transmission shaft 83 to rotate through the large arm primary synchronous belt pulley 81, so that primary speed reduction transmission is realized; the large arm transmission shaft 83 drives the large arm driving shaft 84 to rotate through the large arm secondary synchronous belt pulley 82, so that secondary speed reduction transmission is realized, and finally the large arm 500 is driven to rotate through the large arm driving shaft 84. The small arm driving shaft 94 is used for driving the small arm 2000 to rotate, and a plurality of transmission connecting rods can be arranged between the small arm 2000 and the small arm for transmission, and the specific form thereof can refer to the existing arrangement and will not be described herein. An output shaft of the small arm driving motor 6 drives a small arm transmission shaft 93 to rotate through a small arm primary synchronous belt pulley 91, so that primary speed reduction transmission is realized; the small arm transmission shaft 93 drives the small arm driving shaft 94 to rotate through the small arm secondary synchronous belt pulley 92, so that secondary speed reduction transmission is realized, and finally the small arm 2000 is driven to rotate through the small arm driving shaft 94.

In still another embodiment, referring to fig. 17 and 18, the large arm primary synchronous pulley 81 proposed in the embodiment of the present invention includes a large arm primary driving pulley 811, a large arm primary driven pulley 812, and a large arm primary synchronous belt 813, and the large arm secondary synchronous pulley 82 includes a large arm secondary driving pulley 821, a large arm secondary driven pulley 822, and a large arm secondary synchronous belt 823;

the large arm primary driving wheel 811 is arranged on the output shaft of the large arm driving motor 5, the large arm primary driven wheel 812 is arranged on the large arm transmission shaft 83, and the large arm primary synchronous belt 813 is arranged on the large arm primary driving wheel 811 and the large arm primary driven wheel 812; the large arm secondary driving wheel 821 is arranged on the large arm transmission shaft 83, the large arm secondary driven wheel 822 is arranged on the large arm driving shaft 84, and the large arm secondary synchronous belt 823 is arranged on the large arm secondary driving wheel 821 and the large arm secondary driven wheel 822;

the forearm primary synchronous pulley 91 comprises a forearm primary driving wheel 911, a forearm primary driven wheel 912 and a forearm primary synchronous belt 913, and the forearm secondary synchronous pulley 92 comprises a forearm secondary driving wheel 921, a forearm secondary driven wheel 922 and a forearm secondary synchronous belt 923;

on forearm one-level action wheel 911 locates forearm driving motor 6's the output shaft, the forearm one-level is followed driving wheel 912 and is located forearm transmission shaft 93, forearm one-level hold-in range 913 locates forearm one-level action wheel 911 and forearm one-level from driving wheel 912, forearm second grade action wheel 921 is located on forearm transmission shaft 93, the forearm second grade is followed driving wheel 922 and is located forearm drive shaft 94, forearm second grade hold-in range 923 is located forearm second grade action wheel 921 and the forearm second grade is followed driving wheel 922.

In this embodiment, the diameter of the first-stage large-arm driven wheel 812 is greater than that of the first-stage large-arm driving wheel 811, the diameter of the second-stage large-arm driven wheel 822 is greater than that of the second-stage large-arm driving wheel 821, the output shaft of the large-arm driving motor 5 drives the first-stage large-arm driving wheel 811 to rotate, the first-stage large-arm driven wheel 812 is driven by the first-stage large-arm synchronous belt 813 to rotate the large-arm transmission shaft 83, and further, the second-stage large-arm driving wheel 821 is driven by the large-arm transmission shaft 83 to rotate, and the second-stage large-arm driven wheel 822 is driven.

The diameter of the forearm primary driven wheel 912 is greater than that of the forearm primary driving wheel 911, the diameter of the forearm secondary driven wheel 922 is greater than that of the forearm secondary driving wheel 921, an output shaft of the forearm driving motor 6 drives the forearm primary driving wheel 911 to rotate, and the forearm primary driven wheel 912 is driven by the forearm primary synchronous belt 913 to rotate the forearm transmission shaft 93, further, the forearm transmission shaft 93 drives the forearm secondary driving wheel 921 to rotate, and the forearm secondary driven wheel 922 is driven by the forearm secondary synchronous belt 923 to rotate the forearm driving shaft 94.

In still another embodiment, referring to fig. 19, a base 21 according to an embodiment of the present invention includes: a bottom plate 211; and a first bearing member 212 and a second bearing member 213, wherein the first bearing member 212 and the second bearing member 213 are oppositely arranged on the bottom plate 211, a first mounting seat 212A is configured on the first bearing member 212, and a second mounting seat 213A is configured on the second bearing member 213. In this embodiment, the bottom plate 211 is a plate, and the first bearing member 212 and the second bearing member 213 can be frame bodies, plate bodies, and the like, and are oppositely disposed on the bottom plate 211. The first mounting seat 212A on the first bearing part 212 is used for mounting the large arm driving motor 5, the large arm deceleration assembly 8 is arranged on the first bearing part 212, the second mounting seat 213A on the second bearing part 213 is used for mounting the small arm driving motor 6, and the small arm deceleration assembly 9 is arranged on the second bearing part 213. It should be noted that the first mounting seat 212A may be integrally formed with the first carrier 212 or detachably connected to the first carrier 212 by a screw connection. In addition, the second mounting seat 213A may be disposed on the second carrier 213.

In still another embodiment, referring to fig. 17 and 18, a large arm primary driving wheel 811 proposed by the embodiment of the present invention is disposed at the end of the output shaft of the large arm driving motor 5 to constitute a first vacant section 51 on the output shaft of the large arm driving motor 5 between the large arm primary driving wheel 811 and the first mounting seat 212A;

the forearm primary driving wheel 911 is arranged at the tail end of the output shaft of the forearm driving motor 6 to form a second vacant section 52 on the output shaft of the forearm driving motor 6 between the forearm primary driving wheel 911 and the second mounting seat 213A;

the first mounting seat 212A protrudes to a side opposite to the second bearing member 213, and the second mounting seat 213A protrudes to a side opposite to the first bearing member 212.

In this embodiment, in order to avoid structural interference, the length of the reserved first spare segment 51 is respectively greater than the length of the protruding structure (for example, the fixing screw of the large arm driving motor 5) disposed on the first mounting seat 212A, so that the large arm primary synchronous belt 813 can be ensured not to contact the protruding structure on the first mounting seat 212A in the operation process, and normal speed reduction transmission is realized. Accordingly, the reservation of the second spare portion 52 also uses the same principle and can obtain the same effect, which is not described herein. In addition, the first idle section 51 can be further lengthened to provide a mounting position for the large arm secondary synchronous belt 823 wheel 82, and the second idle section 52 can be further lengthened to provide a mounting position for the small arm secondary synchronous belt 923 wheel 92. In addition, the first mounting seat 212A protrudes to the side opposite to the second bearing member 213, and can form a mounting space inside the large-arm primary timing belt 813 wheel 81 together with the first idle section 51, that is, the space-avoiding gap is enlarged, so that a mounting position can be better provided for the large-arm secondary timing belt 823 wheel 82, and the structure compactness is improved; correspondingly, the second mounting seat 213A protrudes to the side opposite to the first bearing component 212, and it and the second idle segment 52 can jointly form a mounting space inside the small arm primary synchronous belt 913 wheel 91, i.e. the space-avoiding gap is enlarged, so as to better provide a mounting position for the small arm secondary synchronous belt 923 wheel 92, and further improve the compactness of the structure.

In still another embodiment, referring to fig. 20 and 21, the large arm transmission shaft 83 according to an embodiment of the present invention includes a first mounting section 831 located at a distal end thereof, the large arm secondary driving wheel 821 is located on the first mounting section 831, a first threaded through hole is formed in a middle region of the large arm primary driven wheel 812, and a first threaded hole adapted to the first threaded through hole is formed in a distal end surface of the large arm transmission shaft 83;

the small arm transmission shaft 93 comprises a second mounting section 931 located at the tail end position of the small arm transmission shaft, the small arm secondary driving wheel 921 is located on the second mounting section 931, a second threaded through hole is formed in the middle area of the small arm primary driven wheel 912, and a second threaded hole matched with the second threaded through hole is formed in the tail end face of the small arm transmission shaft 93.

In this embodiment, the large-arm secondary driving wheel 821 is fixedly sleeved on the first mounting section 831 of the large-arm transmission shaft 83, the first mounting section 831 is located at the end position of the large-arm transmission shaft 83, and the large-arm primary driven wheel 812 is locked on the end surface of the large-arm transmission shaft 83 through a bolt, that is, the large-arm secondary driving wheel 821 is located inside the large-arm primary driven wheel 812; on the fixed cover of forearm second grade action wheel 921 was located the second installation section 931 of forearm transmission shaft 93, this second installation section 931 was located the terminal position department of forearm transmission shaft 83, and the forearm one-level was followed driving wheel 912 and is passed through the bolt locking at the terminal surface of forearm transmission shaft 93, also that forearm second grade action wheel 921 is located the forearm one-level and follows the inboard of driving wheel 912, simple structure sets up firm and easy dismounting.

In yet another embodiment, referring to fig. 20 and 21, a first through hole, a first fixing seat 214 arranged corresponding to the first through hole, and two first bearings 215 located on the first fixing seat 214 are provided on the first bearing 212 according to an embodiment of the present invention, a first bearing mounting hole is provided on the first fixing seat 214, the two first bearings 215 are arranged in the first bearing mounting hole at intervals, the large arm transmission shaft 83 is disposed through the first through hole, the large arm transmission shaft 83 further includes a first connecting section 43 in interference fit with inner rings of the two first bearings 215, and a first sleeve 216 located between the two first bearings 215 is provided on the first connecting section 43;

the second bearing piece 213 is provided with a second through hole, a second fixing seat 217 arranged corresponding to the second through hole and two second bearings 218 located on the second fixing seat 217, the second fixing seat 217 is provided with a second bearing mounting hole, the two second bearings 218 are arranged in the second bearing mounting hole at intervals, the small arm transmission shaft 93 penetrates through the second through hole, the small arm transmission shaft 93 further comprises a second connecting section 43 in interference fit with inner rings of the two second bearings 218, and the second connecting section 43 is provided with a second sleeve 219 located between the two second bearings 218.

In this embodiment, the aperture of the first through hole on the first bearing member 212 is larger than the diameter of the large arm transmission shaft 83, the large arm transmission shaft 83 passes through the first through hole, two ends of the large arm transmission shaft 83 are respectively located at two sides of the first bearing member 212, and the large arm transmission shaft 83 is rotatably engaged with the first fixing seat 214 through the two first bearings 215 and is fixed on the first bearing member 212 through the first fixing seat 214. The aperture of the second through hole on the second bearing member 213 is larger than the diameter of the small arm transmission shaft 93, the small arm transmission shaft 93 passes through the second through hole, the two ends of the small arm transmission shaft 93 are respectively located at the two sides of the second bearing member 213, and the small arm transmission shaft 93 is rotatably matched with the second fixing seat 217 through the two second bearings 218 and is fixed on the second bearing member 213 through the second fixing seat 217. In addition, the first bearings 215 are spaced apart by a first bushing 216 and the second bearings 218 are spaced apart by a second bushing 219. Through the structure, the large arm transmission shaft 83 and the small arm transmission shaft 93 are stable in rotation, simple to assemble and disassemble and convenient to maintain.

In yet another embodiment, referring to fig. 20 and 21, a third bearing mounting hole and a third bearing 21A located in the third bearing mounting hole are provided on the first bearing 212, and the large arm driving shaft 84 is in interference fit with an inner ring of the third bearing 21A;

the second bearing piece 213 is further provided with a fourth bearing mounting hole, a fourth bearing 21B located in the fourth bearing mounting hole and a large arm driven rotating shaft 85 in interference fit with an inner ring of the fourth bearing 21B, the large arm driven rotating shaft 85 is provided with a fifth bearing mounting hole and a fifth bearing 21C located in the fifth bearing mounting hole, and the small arm driving shaft 94 is in interference fit with the inner ring of the fifth bearing 21C and two ends of the small arm driving shaft penetrate out of the fifth bearing mounting hole.

In yet another embodiment, referring to fig. 20 and 21, the first bearing member 212 according to the embodiment of the present invention is further provided with a first annular cover plate 21D disposed corresponding to the third bearing mounting hole, the first annular cover plate 21D abuts against the outer ring of the third bearing 21A, the middle region of the large arm secondary driven wheel 822 is provided with a plurality of third threaded through holes, and the end surface of the large arm driving shaft 84 is provided with third threaded holes adapted to the third threaded through holes;

the second bearing piece 213 is further provided with a second annular cover plate 21E arranged corresponding to the fourth bearing mounting hole, the second annular cover plate 21E is abutted against the outer ring of the fourth bearing 21B, the large arm driven rotating shaft 85 is further provided with a third annular cover plate 21F arranged corresponding to the fifth bearing mounting hole, the third annular cover plate 21F is abutted against the outer ring of the fifth bearing 21C, the middle area of the small arm secondary driven wheel 922 is provided with a fourth threaded through hole, and the tail end face of the small arm driving shaft 94 is provided with a fourth threaded hole matched with the fourth threaded through hole.

In another embodiment, referring to fig. 15, the table top robot driving structure according to the embodiment of the present invention further includes: an actuator motor 1000; the actuating motor 1000 is a servo motor, the actuating motor 1000 includes an absolute value encoder and an electromagnetic band brake, and the electromagnetic band brake is an electromagnetic band brake for disconnecting the band brake.

In another embodiment, the table top mechanical arm driving structure provided in the embodiment of the present invention further includes: a control panel; the control board is electrically connected with the turntable driving motor 3, the large arm driving motor 5, the small arm driving motor 6 and the actuating motor 1000 respectively.

Referring to fig. 22, a desktop mechanical arm further proposed by the present invention includes a driving structure, and the specific structure of the driving structure refers to the above embodiments, and since the desktop mechanical arm adopts all technical solutions of all the above embodiments, at least all technical effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein.

The present invention further provides a robot, which includes a desktop mechanical arm, where the desktop mechanical arm includes the desktop mechanical arm driving structure described in the foregoing embodiments, and since the desktop mechanical arm driving structure adopts all technical solutions of all the embodiments, at least all technical effects brought by the technical solutions of the embodiments are achieved, and details are not repeated herein.

The above is only a part or preferred embodiment of the present invention, and neither the text nor the drawings should limit the scope of the present invention, and all equivalent structural changes made by the present specification and the contents of the drawings or the related technical fields directly/indirectly using the present specification and the drawings are included in the scope of the present invention.

Claims

1. A desktop mechanical arm drive structure, comprising: a base and a turntable;

a turntable driving motor and a turntable driving shaft are arranged in the base, the turntable driving motor is in transmission connection with the turntable driving shaft, the turntable driving shaft is in transmission connection with the turntable, the turntable driving shaft is arranged in the central area of the base, and the turntable driving motor is arranged around the turntable driving shaft in a staggered manner;

2. The table top robot drive structure of claim 1,

the output shaft of the turntable driving motor is arranged upwards.

3. The table top robot drive structure of claim 1, further comprising:

4. The tabletop arm drive configuration of claim 3 wherein,

the turntable speed reducing assembly comprises a turntable primary synchronous belt pulley and a turntable secondary synchronous belt pulley;

5. The table top robot drive structure of claim 4,

6. The table top robot drive structure of claim 5,

one side of base is constructed with the mounting panel breach, the base still includes the mounting panel, the mounting panel set up in mounting panel breach department, the mounting panel is constructed with a plurality of interface bayonet socket.

7. The table top mechanical arm driving structure according to claim 6, wherein a stop plate is arranged on one side of the partition plate close to the mounting plate, the stop plate is located below the turntable, a turntable limiting column for abutting against the stop plate is arranged on the turntable, and the turntable limiting column is located on one side close to the large arm and the small arm.

8. The table top mechanical arm driving structure of claim 7, wherein the stop plate comprises a fixing portion connected to the partition plate and a limiting portion extending towards the turntable driving shaft, and two side walls of the limiting portion are retracted towards the turntable driving shaft.

9. The table top mechanical arm driving structure of claim 8, wherein an angle formed by intersection of two extension lines extending along the two side walls ranges from 5 degrees to 60 degrees.

10. The table top robot drive structure of claim 5,

11. The desktop robot arm drive structure of claim 10,

12. The table top mechanical arm driving structure of claim 11, wherein the absolute value encoder is a multi-turn absolute value encoder, and the electromagnetic band brake is an electromagnetic band brake of a power-off band brake.

13. The table top robot arm drive structure of claim 5, wherein the turntable drive shaft is disposed on the partition via a thrust bearing.

14. The table top mechanical arm driving structure of claim 13, wherein a receiving cavity is formed in the partition, the receiving cavity is formed with a receiving structure matched with a lower edge of an outer ring of the thrust bearing, the thrust bearing is arranged in the receiving cavity, the lower edge of the outer ring of the thrust bearing is connected with the receiving structure, the turntable driving shaft is inserted into the inner ring of the thrust bearing from top to bottom in the vertical direction, the turntable driving shaft is formed with a bearing section, an insertion section and a connecting section, the bearing section is abutted against the upper edge of the inner ring of the thrust bearing, the insertion section is abutted against the inner ring of the thrust bearing, and the connecting section is in transmission connection with the secondary synchronous pulley of the turntable.

15. The table top robot drive structure of claim 13, further comprising:

16. The table top robot arm drive structure of claim 13, wherein the thrust bearing is a double row angular contact bearing.

17. The desktop robot arm drive structure of claim 14,

18. The table top robot drive structure of claim 17,

the base still includes the revolving stage transmission shaft, just the baffle is constructed to have the confession the shaft hole that the revolving stage transmission shaft passed, the revolving stage transmission shaft is including installation cover, two bearings and axis body, two bearings respectively interference fit set up in the both ends of installation cover, the axis body set up in within the installation cover and simultaneously with two bearing inner rings are connected, axis body one end is passed through the shaft hole with the revolving stage one-level is connected from the driving wheel, the other end with revolving stage second grade action wheel is connected.

19. The table top robot drive structure of claim 18, further comprising:

a plurality of first set screws and a first tensioning mechanism;

20. The table top mechanical arm driving structure of claim 17, wherein the turntable secondary driven wheel is detachably connected to the connecting section, the turntable secondary driven wheel is configured with an abutting structure, the abutting structure is configured into a ring shape matched with the connecting section, the abutting structure abuts against a lower edge of an inner ring of the thrust bearing when the turntable secondary driven wheel is fixedly connected to the connecting section, the turntable secondary driven wheel is provided with a connecting structure, the connecting structure is a plurality of threaded through holes, and the connecting section is configured with threaded holes matched with the threaded through holes.

21. The table top mechanical arm driving structure of claim 20, further comprising a positioning pin, wherein the connecting section is provided with a positioning hole, the secondary turntable driven wheel is provided with a positioning through hole, and the positioning pin is inserted into the positioning hole through the positioning through hole.

22. The table top robot drive structure of claim 5, further comprising:

a plurality of second set screws and a second tensioning mechanism;

23. The driving structure of the desktop mechanical arm of claim 1, wherein the base is provided with limiting members located at the front and rear sides of the large arm, and the limiting members are used for being in abutting fit with a stop block arranged at the end of the large arm.

24. The tabletop arm drive configuration of claim 3 wherein,

25. The table top robot drive structure of claim 24,

26. The table top robot drive structure of claim 25,

27. The table top robot drive structure of claim 26,

28. The desktop robot arm drive structure of claim 27, wherein the base comprises: a base plate; the first bearing piece and the second bearing piece are oppositely arranged on the bottom plate, a first mounting seat is formed on the first bearing piece, and a second mounting seat is formed on the second bearing piece.

29. The desktop robot arm drive structure of claim 28,

30. The desktop robot arm drive structure of claim 29,

31. The tabletop arm drive configuration of claim 30 wherein,

32. The table top robot drive structure of claim 31,

33. The desktop robot arm drive structure of claim 32,

the first bearing piece is also provided with a first annular cover plate arranged corresponding to the third bearing mounting hole, the first annular cover plate is abutted against an outer ring of the third bearing, the middle area of the secondary driven wheel of the large arm is provided with a plurality of third threaded through holes, and the tail end face of the driving shaft of the large arm is provided with third threaded holes matched with the third threaded through holes;

34. The table top robot drive structure of claim 1, further comprising: an actuator motor;

35. The table top robot drive structure of claim 34, further comprising: a control panel;

36. A table top robot comprising the table top robot drive structure of any of claims 1-35.

37. The table top robot arm of claim 36, further comprising an end effector coupled to the forearm via an end.

38. A robot comprising a tabletop arm as claimed in claim 36 or 37.