CN114530981A - Linear push-out motor assembly - Google Patents
Linear push-out motor assembly Download PDFInfo
- Publication number
- CN114530981A CN114530981A CN202210190984.9A CN202210190984A CN114530981A CN 114530981 A CN114530981 A CN 114530981A CN 202210190984 A CN202210190984 A CN 202210190984A CN 114530981 A CN114530981 A CN 114530981A
- Authority
- CN
- China
- Prior art keywords
- screw
- motor
- linear
- motor assembly
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000009467 reduction Effects 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 244000208734 Pisonia aculeata Species 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003974 emollient agent Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A linear ejection motor assembly comprising: the motor comprises a motor shaft; the single-side push-pull force ball screw assembly comprises a screw and a screw guide block matched with the screw, and a linkage boss is arranged on the screw guide block; the connecting block, the connecting block is used for being connected to load mechanism, and the connecting block is connected, is used for realizing rectilinear motion's output with the linkage boss. The motor is used for outputting rotary motion and power, the single-side push-pull force ball screw pair is in power connection with the motor, the rotary motion output by the motor can be converted into linear motion through the matching of the screw and the screw travel block, the linear motion is output through the screw travel block, the power is output through the screw travel block, the connecting block is connected with the screw travel block and the load mechanism, and therefore the side of the load mechanism can be pushed out and pulled back. The linear push-out motor assembly is reasonable and compact in structural design, and solves the problem that the traditional linear push-out motor assembly is large in single-side push-out resistance.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a linear push-out motor assembly.
Background
In the process of pushing the load by the linear pushing motor assembly, the pushing force action line and the axis of the lead screw are on the same straight line, so that the pushing motion can be ensured to have higher stability while the linear pushing motion is realized.
Generally, the motor assembly and the load are connected in series, and the occupied space in length is large. In some special fields, due to the limitation of spatial layout, the linear pushing motor assembly and the load need to be arranged side by side to reduce the size in the length direction, and in this case, the linear pushing motor assembly needs to have a side pushing function.
Based on current linear release motor element structure, if linear release motor element adopted the unilateral to release, the lead screw would bear great moment of flexure to lead to the lead screw to produce great deformation, produce great resistance, seriously influence the work that linear release motor element was.
Disclosure of Invention
In summary, how to solve the problem of large single-side pushing resistance existing in the conventional linear pushing motor assembly becomes a problem to be solved urgently by those skilled in the art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a linear ejection motor assembly, comprising:
the motor comprises a motor shaft and is used for outputting rotary motion;
the single-side push-pull force ball screw assembly comprises a screw shaft in power connection with the motor shaft and a screw rod moving block matched with the screw shaft and used for converting the rotary motion of the screw shaft into linear motion, and a linkage boss which is linked with the screw rod moving block and can perform linear motion is arranged on the screw rod moving block;
the connecting block is used for being connected to a load mechanism, and the connecting block is connected with the linkage boss and used for achieving output of linear motion.
Preferably, in the linear push-out motor assembly provided by the invention, the linear push-out motor assembly further comprises a lead screw shell; the screw rod is rotatably arranged in the screw rod shell, a shell sliding groove parallel to the screw rod is arranged on the screw rod shell, and the linkage boss is slidably arranged in the shell sliding groove and circumferentially limits the screw rod sliding block through the shell sliding groove.
Preferably, in the linear push-out motor assembly provided by the invention, a speed reduction system for realizing speed reduction and torque increase is further included; the motor is in power connection with the lead screw through the speed reducing system.
Preferably, in the linear push-out motor assembly provided by the invention, the speed reduction system is a fixed-axis gear speed reducer with input and output on the same side; the speed reducing system comprises an input gear and an output shaft, the input gear is fixedly connected with a motor shaft of the motor, and the output shaft and the lead screw form an integrated structure.
Preferably, in the linear push-out motor assembly provided by the present invention, along an axial direction of the lead screw, one end of the lead screw housing is a fixed end, the other end of the lead screw housing is a floating end, the fixed end is provided with an angular contact bearing, the floating end is provided with a deep groove ball bearing, the motor is disposed near the fixed end, and the lead screw is rotatably disposed on the lead screw housing through the angular contact bearing and the deep groove ball bearing.
Preferably, in the linear push-out motor assembly provided by the invention, the motor is provided with a motor brake.
Preferably, in the linear push-out motor assembly provided by the invention, the motor brake is a friction disc brake, and the motor brake is in splined connection with a motor shaft of the motor.
Preferably, in the linear push-out motor assembly provided by the invention, the screw block is a ball nut.
Preferably, in the linear ejecting motor assembly provided by the invention, a gap of 0.01 mm-0.05 mm is formed between the linkage boss and the sliding chute of the machine shell.
Preferably, in the linear push-out motor assembly provided by the invention, the linkage boss is of a cylindrical structure, the axis of the linkage boss is perpendicular to the axis of the lead screw, the connecting block is of a flat plate structure, and a U-shaped clamping groove for clamping the linkage boss is arranged on the connecting block.
Compared with the prior art, the beneficial effects of this application are as follows:
the invention provides a linear push-out motor assembly, which comprises: the motor comprises a motor shaft and is used for outputting rotary motion; the single-side push-pull force ball screw assembly comprises a screw and a screw travel block, wherein the screw is in power connection with a motor shaft, the screw travel block is matched with the screw and used for converting the rotary motion of the screw into linear motion, and a linkage boss which is linked with the screw travel block and can perform linear motion is arranged on the screw travel block; the connecting block is used for being connected to the load mechanism, and the connecting block is connected with the linkage boss and is used for realizing the output of linear motion.
Through the above mechanism design, the motor is used for outputting rotary motion and power, the single-side push-pull force ball screw assembly is in power connection with the motor, the rotary motion output by the motor can be converted into linear motion through the matching of the screw rod and the screw rod travel block, the linear motion is output through the screw rod travel block, meanwhile, the power is output through the screw rod travel block, and the connecting block is connected with the screw rod travel block and the load mechanism, so that the side push-out and pull-back of the load mechanism can be realized. The linear push-out motor assembly is reasonable and compact in structural design, and solves the problem that the traditional linear push-out motor assembly is large in single-side push-out resistance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural diagram of a linear push-out motor assembly according to an embodiment of the present invention;
fig. 2 is a partial sectional view of a linear push-out motor assembly in an embodiment of the present invention.
The correspondence between the component names and reference numbers in fig. 1 and 2 is:
the device comprises a motor 1, a speed reducing system 2, a lead screw 3, a lead screw shell 4, an angular contact bearing 5, a deep groove ball bearing 6, a motor brake 7, a linkage boss 8 and a connecting block 9.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For example, shown or described
Features that are part of one embodiment can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a linear push-out motor assembly according to an embodiment of the present invention; fig. 2 is a partial sectional view of a linear push-out motor assembly in an embodiment of the present invention.
The invention aims to provide a motor assembly which can realize side push-pull force and has a locking function, can realize the functions of side push-out, side pull-back and locking at any position through the control of an upper computer (the existing structure), and has the advantages of small volume, light weight, large output force and the like.
In order to achieve the above object, the present invention provides a linear push-out motor assembly capable of outputting not only a linear motion but also a one-sided push-out linear motion.
In the invention, the linear push-out motor assembly comprises the following components:
1. an electric machine 1.
The motor 1 provided by the invention is a motor 1 with a motor brake 7.
In the prior art, the motor 1 is provided with a motor shaft for outputting rotary motion, the motor shaft extends out of two ends of a motor body (a motor shell), one end of the motor shaft is a power output end and can be directly connected (generally in key connection) with a load mechanism or a speed change system (a speed reduction system 2), and the other end of the motor shaft can be a braking end and used for installing a motor brake 7, so that the speed reduction braking or the rotary locking of the motor shaft is realized through the motor brake 7.
The motor 1 provided by the invention can be a stepping motor or a servo motor, the motor 1 is provided with a motor shaft and is used for outputting rotary motion, meanwhile, the motor brake 7 is arranged at the braking end of the motor shaft, specifically, the motor brake 7 is a friction disc brake, and the motor brake 7 is in spline connection with the motor shaft of the motor 1.
The friction disc brake comprises a brake end cover arranged on a motor shaft through a shaft sleeve, a coil base which is arranged on the motor shaft in a sleeved mode and is fixed relative to the motor 1, a brake spring and a brake coil are arranged in the coil base, a pressure disc is arranged on the coil base through the brake spring, and the pressure disc is arranged between the coil base and the brake end cover. When the brake coil is electrified, the brake coil generates magnetic attraction force to counteract partial elastic force or all elastic force of the brake spring, so that the pressure of the pressure disc on the brake end cover is weakened or completely counteracted (the friction force is reduced or eliminated) to realize low-rotation-speed rotation or normal rotation of the motor 1.
Of course, the motor brake 7 mounted on the motor 1 may also adopt other structural forms, such as a disc brake, a drum brake, and the like, but the invention takes a friction disc brake as an optimal design scheme.
2. And a ball screw pair with single-side push-pull force.
The ball screw pair with the push-pull force on the single side is actually the ball screw pair, but the ball screw pair is different from the ball screw pair in the prior art, and the ball screw pair adopted by the invention can realize the output of the push-pull force on the single side.
Specifically, the ball screw assembly with push-pull force on one side comprises a screw rod 3 in power connection with a motor shaft (the power connection means that the rotation motion or torque transmitted by the motor shaft of the motor 1 can be finally transmitted to the screw rod 3, so that the screw rod 3 can perform the rotation motion and can transmit the torque), and a screw rod moving block which is matched with the screw rod 3 and is used for converting the rotation motion of the screw rod 3 into the linear motion (the conversion between the rotation motion and the linear motion is realized through a thread structure between the screw rod 3 and the screw rod moving block, the simplest structure is that the outer surface of the screw rod 3 is provided with an external thread, the screw rod moving block is provided with an internal thread, the screw rod moving block is arranged on the screw rod 3 and is in thread fit, meanwhile, the axial rotation limit is performed on the screw rod moving block, the rotation motion of the screw rod 3 can be converted into the linear motion of the screw rod moving block itself through the screw rod moving block, and a linkage boss 8 which is linked with the screw rod moving block and can perform the linear motion is arranged on the screw rod moving block, specifically, the linkage boss 8 is a force transmission structure, and the linkage boss 8 is fixedly arranged on the lead screw play block and can output the linear motion of the lead screw play block so as to realize the push-pull linear motion of the load mechanism.
Specifically, the screw travel block is a ball nut.
In a preferred embodiment of the present invention, the screw block is made of metal, the linkage boss 8 is also made of metal, and the linkage boss 8 may be integrally formed on the screw block or may be fixedly mounted on the screw block by a bolt, a flange, or other structures.
Furthermore, the unilateral push-pull force ball screw assembly further comprises a screw shell 4, the screw shell 4 is mounted on a screw frame, the screw frame is a metal framework, and the screw frame is used for mounting the unilateral push-pull force ball screw assembly and also has the mounting of other structures (such as the motor 1 and the speed reduction system 2) of the invention. The screw shell 4 is of a shell structure, two ends of the screw shell 4 are provided with spigots with holes (the holes are used for installing bearings), the middle of the screw shell is penetrated through by through holes, and a shell sliding groove is formed in the side edge of the screw shell 4. The spigot diameter of one end on the screw shell 4 is the same as the outer diameter of the angular contact bearing 5, and the angular contact bearing 5 can be matched with a bearing seat hole of the input/output dead axle gear reducer on the same side.
The invention does not limit the concrete structure of the screw frame, so as to stably install the motor 1 and the unilateral push-pull force ball screw pair, and further, the motor 1 is positioned at the upper side of the unilateral push-pull force ball screw pair and at one end of the unilateral push-pull force ball screw pair.
The screw shell 4 is arranged on the screw frame, can cover most of the structure of the screw 3, and the screw moving block is completely covered in the screw shell 4. By arranging the screw shell 4, most of the rotary motion structures in the invention can be shielded for protection, thereby not only improving the running stability of the invention, but also improving the use safety of the invention.
In the invention, the lead screw shell 4 is made of metal material, the lead screw shell 4 is a shell structure, and the lead screw 3 is rotatably arranged in the lead screw shell 4. According to the motion trail of the screw rod sliding block, a shell sliding groove (a long straight circular hole groove) parallel to the screw rod 3 is arranged on the screw rod shell 4, and the linkage boss 8 is slidably arranged in the shell sliding groove (the linkage boss 8 moves along with the screw rod sliding block) and circumferentially limits the screw rod sliding block through the shell sliding groove.
The width of the casing sliding groove is set according to the diameter of the linkage boss 8, and the width of the casing sliding groove is equal to the diameter of the linkage boss 8, so that the linkage boss 8 and the upper side and the lower side of the casing sliding groove rub simultaneously when moving. Or the width of the casing sliding groove is slightly larger than the diameter of the linkage boss 8, and specifically, a gap of 0.01 mm-0.05 mm is formed between the linkage boss 8 and the casing sliding groove. As described above, the linkage boss 8 reciprocates in the casing sliding groove, and the linkage boss 8 also has a function of circumferentially limiting the screw slider, so that in an embodiment in which the width of the casing sliding groove is slightly larger than the diameter of the linkage boss 8, when the linkage boss 8 moves in one direction (set to be a forward direction) along with the screw slider, the linkage boss 8 abuts against a certain side (set to be an upper side) of the casing sliding groove and slides in a frictional manner, and when the linkage boss 8 moves in one direction (set to be a reverse direction) along with the screw slider, the linkage boss 8 abuts against the other side (set to be a lower side) of the casing sliding groove and slides in a frictional manner. The linkage boss 8 and the shell sliding groove have a gap of 0.01-0.05 mm, so that stable operation of the linkage boss 8 can be guaranteed, and the linkage boss 8 can only be in sliding contact with one side of the shell sliding groove to reduce friction force (the friction force is reduced, energy loss is reduced, and the service life of a mechanical structure is longer).
Based on the above structure (in the embodiment provided with the screw housing 4), the present invention also proposes the following structural optimization: along the axial direction of the lead screw 3, one end of the lead screw housing 4 is a fixed end (the fixed end means that when the lead screw 3 is mounted on the lead screw housing 4, the end of the lead screw 3 located at the fixed end is fixedly arranged), and the other end of the lead screw housing 4 is a movable end (the movable end means that when the lead screw 3 is mounted on the lead screw housing 4, the end of the lead screw 3 located at the movable end can be slightly adjusted in position, so that the position posture of the axis of the lead screw 3 on the space can be changed).
The lead screw 3 is mounted on the lead screw shell 4 through a bearing, specifically, the invention is provided with an angular contact bearing 5 (capable of bearing axial and radial acting forces simultaneously) at the fixed end of the lead screw shell 4, and the invention is provided with a deep groove ball bearing 6 (capable of bearing larger radial acting force) at the floating end of the lead screw shell 4. Because the end of the screw rod 3, which is positioned at the fixed end, is fixed, the motor 1 is arranged close to the fixed end, so that the reliable and stable connection between the motor 1 and the screw rod 3 can be ensured constantly. The spindle 3 is rotatably mounted on the spindle housing 4 via an angular contact bearing 5 and a deep groove ball bearing 6.
Furthermore, the invention is provided with two angular contact bearings 5 at the fixed end for mounting one end of the screw rod 3. The floating end of the screw shell 4 is provided with a floating end cover, the floating end cover can perform two-dimensional position adjustment on the screw shell 4 in a plane perpendicular to the circumferential axis of the screw 3 (after the position adjustment is finished, the floating end cover can be fixedly arranged on the screw shell 4), the deep groove ball bearing 6 is fixedly arranged on the floating end cover, and the deep groove ball bearing 6 can perform position fine adjustment along with the floating end cover, so that the floating (posture adjustment) of the other end of the screw 3 is realized.
The linkage boss 8 is a force transmission structure, in a specific embodiment of the invention, the linkage boss 8 is a cylindrical structure, the axis of the linkage boss 8 is vertical to the axis of the screw rod 3, the connecting block 9 is a flat plate structure, and a U-shaped clamping groove for clamping the linkage boss 8 is arranged on the connecting block 9.
Of course, the interlocking projection 8 may also take the form of a regular quadrangular prism (rectangular parallelepiped or square).
3. A connecting block 9.
The connecting block 9 is a structure for realizing power connection between the linkage boss 8 and the load mechanism.
Specifically, the connecting block 9 is a flat plate structure, and a plurality of through hole structures are arranged on the connecting block 9, so that the connecting block can be fixedly connected with the load mechanism through bolts. The connecting block 9 is used for being connected to a load mechanism (fixed through a bolt), the connecting block 9 is connected with the linkage boss 8 (a U-shaped clamping groove used for clamping the linkage boss 8 is formed in the connecting block 9), and the connecting block 9 is used for achieving output of linear motion.
In the present invention, the joint block 9 is made of a metal material, and the joint block 9 is of an integral structure.
4. A deceleration system 2.
The speed reducing system 2 is a transmission system for realizing the connection of the motor 1 and the screw rod 3, and has the main function of reducing speed and increasing torque. The invention is also provided with a speed reducing system 2, and the motor 1 is in power connection with the screw rod 3 through the speed reducing system 2.
Specifically, the speed reduction system 2 is a dead axle gear reducer with the input and output at the same side (namely, the power input and the power output are located at the same side, so that the motor 1 and the single-side push-pull force ball screw pair can adopt a vertical rowed mounting structure). The speed reduction system 2 comprises an input gear and an output shaft, wherein the input gear is fixedly connected with a motor shaft of the motor 1 (the input gear can be in a spline connection, a gear shaft can also be arranged on the input gear, the gear shaft is connected with the motor shaft through a coupler, and the output shaft and the screw rod 3 form an integrated structure.
The invention provides a unilateral linear push-out motor assembly which can prevent the problem that the unilateral linear push-out motor assembly cannot be pushed out due to increased resistance caused by bending moment deformation under the action of unilateral push-out force, and can realize unilateral high-efficiency push-out. The specific technical scheme of the invention is as follows: including the motor of taking the stopper, the motor of taking the stopper links to each other with speed reducing system's input, and lead screw sub-assembly links to each other with speed reducing system's output, is provided power as the power supply by the motor, and power passes through speed reducing system and transmits for lead screw sub-assembly, and the connecting block is used for being connected between lead screw sub-assembly and the load to can transmit the linear motion (the linear motion of linkage boss 8) of lead screw sub-assembly for the load. Screw subassembly includes ball 3 and screw casing 4, the inside design of screw casing 4 has the long cylinder through-hole, the unilateral limit is opened there is the U-shaped groove, ball contains ball nut and screw shaft, ball nut is cylindrical, the excircle diameter is the same with screw casing long cylinder through-hole diameter, one side design of ball nut has columniform linkage boss 8, the diameter of linkage boss 8 is the same with the U-shaped groove width of screw casing 4, arrange ball in the screw casing, under the drive of motor, ball nut boss slides in the U-shaped inslot of screw casing, ball nut excircle and screw casing hole are sliding friction. When the unilateral linear pushing motor assembly drives the load to push out, the action point of force acts on the ball nut boss. Because the action line of force and the screw shaft are not on the same straight line, the ball screw assembly can bear bending moment, and the long cylindrical through hole of the screw shell designed at the moment supports the outer circle of the ball nut, so that the ball screw assembly is prevented from increasing resistance due to bending moment deformation, and the side edge is pushed out efficiently.
The motor assembly capable of realizing the side push-pull force and having the locking function is optimally designed based on the structure of the conventional linear push-out motor assembly, so that the motor assembly has the advantages of small volume, compact structural layout, large output force and the like, and simultaneously has the functions of realizing the motion and the locking of a load in a narrow space. The motor assembly provided by the invention is suitable for any occasions needing linear pushing or having any linear position locking function.
The invention provides a motor component with side push-pull force and locking function, comprising: a motor 1 with a brake, a fixed shaft gear reducer, a ball screw pair and a screw shell 4. When the motor 1 with the brake is not electrified, the brake is in a braking state, and the motor assembly provided by the invention is in a locking state. The motor 1 with the brake is unlocked under the condition of being electrified, the motor 1 is electrified to rotate, and under the gear meshing state with the fixed-axis gear reducer (the motor 1 can realize speed reduction and torque increase through the fixed-axis gear reducer), the rotary motion of the motor 1 can be transmitted to the lead screw 3 shaft on the ball screw pair, the lead screw 3 shaft obtains larger output torque under the speed reduction and torque increase effects of the fixed-axis gear reducer, and the ball screw pair converts the rotary motion (with larger torque) of the lead screw 3 shaft into linear motion with larger push-out force, so that load push-out is realized.
In order to ensure the reliability of the structure, a lead screw shaft 3 on the ball screw pair is supported by a pair of angular contact bearings 5 (two angular contact bearings 5) and a deep groove ball bearing 6, the pair of angular contact bearings 5 are installed at the fixed end of a lead screw shell 4 to support a gear and the lead screw 3, the deep groove ball bearing 6 is installed at the moving end of the lead screw shell 4 to support the other end of the lead screw 3, and the deep groove ball bearing 6 is arranged at the moving end and can move left and right, so that the lead screw 3 can still be effectively supported under the conditions of thermal expansion and cold contraction.
Aiming at the structural defects of the linear push-out motor assembly in the prior art, the invention designs the screw shell 4 which can offset the bending moment on the basis of the structure of the linear push-out motor assembly, thereby reducing the self resistance and effectively increasing the push-out force on one side. Through the structural design and analysis, the motor assembly with the side push-pull force and the locking function can realize the push-out, pull-back and locking functions under the condition of high side load. Specifically, motor 1 circular telegram, output rotary motion and power realize slowing down through dead axle gear reducer and increase the turn round, and dead axle gear reducer gives ball screw pair with power transmission, and ball screw is vice including lead screw 3 and ball nut (lead screw trip piece), and ball nut's side is provided with linkage boss 8, and linkage boss 8 slides and drives the load and be linear motion together in the casing spout of lead screw casing 4, realizes the side and releases the function. The excircle of linkage boss 8 and the little clearance fit of the casing spout of screw casing 4 can reduce the resistance of releasing through adding emollient, and the casing spout of screw casing 4 plays support, limiting displacement to linkage boss 8 simultaneously, prevents to lead to the vice hidden danger that causes the vice inefficacy of ball because of the side load leads to the vice deformation of ball, has improved the reliability of structure.
The present invention provides a linear push-out motor assembly, which comprises: the motor 1, the motor 1 includes the motor shaft, is used for exporting the rotary motion; the single-side push-pull force ball screw assembly comprises a screw 3 in power connection with a motor shaft and a screw floating block matched with the screw 3 and used for converting the rotary motion of the screw 3 into linear motion, and a linkage boss 8 which is linked with the screw floating block and can perform linear motion is arranged on the screw floating block; and the connecting block 9 is used for being connected to a load mechanism, and the connecting block 9 is connected with the linkage boss 8 and used for realizing the output of linear motion. Through the mechanism design, in the invention, the motor 1 is used for outputting rotary motion and power, the single-side push-pull force ball screw pair is in power connection with the motor 1, the rotary motion output by the motor 1 can be converted into linear motion through the matching of the screw 3 and the screw guide block, the linear motion is output through the screw guide block, meanwhile, the power is output through the screw guide block, and the connecting block 9 is connected with the screw guide block and the load mechanism, so that the side push-out and pull-back of the load mechanism can be realized. The linear push-out motor assembly is reasonable and compact in structural design, and solves the problem that the traditional linear push-out motor assembly is large in single-side push-out resistance.
The above is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A linear ejection motor assembly, comprising:
a motor (1) comprising a motor shaft for outputting a rotational movement;
the single-side push-pull force ball screw assembly comprises a screw (3) in power connection with the motor shaft and a screw guide block matched with the screw guide and used for converting the rotary motion of the screw guide into linear motion, and a linkage boss (8) which is linked with the screw guide block and can perform linear motion is arranged on the screw guide block;
the connecting block (9) is used for being connected to a load mechanism, and the connecting block is connected with the linkage boss and used for achieving output of linear motion.
2. Linear ejection motor assembly according to claim 1,
the screw machine shell (4) is also included;
the screw rod is rotatably arranged in the screw rod shell, a shell sliding groove parallel to the screw rod is arranged on the screw rod shell, and the linkage boss is slidably arranged in the shell sliding groove and circumferentially limits the screw rod sliding block through the shell sliding groove.
3. Linear ejection motor assembly according to claim 1,
the device also comprises a deceleration system (2) for realizing deceleration and torque increase;
the motor is in power connection with the lead screw through the speed reducing system.
4. Linear ejection motor assembly according to claim 3,
the speed reduction system is a fixed-shaft gear speed reducer with input and output at the same side;
the speed reducing system comprises an input gear and an output shaft, the input gear is fixedly connected with a motor shaft of the motor, and the output shaft and the lead screw form an integrated structure.
5. Linear push-out motor assembly according to claim 2,
follow the axial of lead screw, the one end of lead screw casing is the stiff end, the other end of lead screw casing is the end that moves about, the stiff end is provided with angular contact bearing (5), it is provided with deep groove ball bearing (6) to move about the end, the motor is close to the stiff end sets up, the lead screw passes through angular contact bearing and deep groove ball bearing rotatably set up in on the lead screw casing.
6. Linear ejection motor assembly according to claim 1,
the motor is provided with a motor brake (7).
7. Linear ejection motor assembly according to claim 6,
the motor brake is a friction disc brake, and the motor brake is connected with a motor shaft spline of the motor.
8. Linear ejection motor assembly according to claim 1,
the screw rod play block is a ball nut.
9. Linear ejection motor assembly according to claim 2,
and a gap of 0.01-0.05 mm is formed between the linkage boss and the sliding chute of the shell.
10. Linear ejection motor assembly according to claim 2,
the linkage boss is of a cylindrical structure, the axis of the linkage boss is perpendicular to the axis of the lead screw, the connecting block is of a flat plate structure, and a U-shaped clamping groove used for clamping the linkage boss is formed in the connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210190984.9A CN114530981A (en) | 2022-02-28 | 2022-02-28 | Linear push-out motor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210190984.9A CN114530981A (en) | 2022-02-28 | 2022-02-28 | Linear push-out motor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114530981A true CN114530981A (en) | 2022-05-24 |
Family
ID=81624666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210190984.9A Pending CN114530981A (en) | 2022-02-28 | 2022-02-28 | Linear push-out motor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114530981A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344740A (en) * | 2004-05-31 | 2005-12-15 | Tsubaki Emerson Co | Electric driven linear actuator |
| CN105337447A (en) * | 2015-11-27 | 2016-02-17 | 湖北三江航天红峰控制有限公司 | Pancake electric steering engine |
| CN105634191A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Modular parallel type electromechanical actuator |
| CN206517223U (en) * | 2016-12-16 | 2017-09-22 | 东北石油大学 | A kind of small-sized electric cylinder |
| CN206860807U (en) * | 2017-06-17 | 2018-01-09 | 深圳市深发源精密科技有限公司 | Wire harness machine screw rod transmission stopping means |
| CN110953313A (en) * | 2019-11-15 | 2020-04-03 | 北京机械设备研究所 | Actuating mechanism of heavy-load anti-locking electric steering engine |
| CN212137465U (en) * | 2020-05-29 | 2020-12-11 | 上海鸣志派博思自动化技术有限公司 | Electronic slip table module of built-in stopper |
-
2022
- 2022-02-28 CN CN202210190984.9A patent/CN114530981A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344740A (en) * | 2004-05-31 | 2005-12-15 | Tsubaki Emerson Co | Electric driven linear actuator |
| CN105634191A (en) * | 2014-10-31 | 2016-06-01 | 北京精密机电控制设备研究所 | Modular parallel type electromechanical actuator |
| CN105337447A (en) * | 2015-11-27 | 2016-02-17 | 湖北三江航天红峰控制有限公司 | Pancake electric steering engine |
| CN206517223U (en) * | 2016-12-16 | 2017-09-22 | 东北石油大学 | A kind of small-sized electric cylinder |
| CN206860807U (en) * | 2017-06-17 | 2018-01-09 | 深圳市深发源精密科技有限公司 | Wire harness machine screw rod transmission stopping means |
| CN110953313A (en) * | 2019-11-15 | 2020-04-03 | 北京机械设备研究所 | Actuating mechanism of heavy-load anti-locking electric steering engine |
| CN212137465U (en) * | 2020-05-29 | 2020-12-11 | 上海鸣志派博思自动化技术有限公司 | Electronic slip table module of built-in stopper |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067651A (en) * | 2023-03-07 | 2023-05-05 | 四川大学 | In-situ equivalent testing system and testing method for ball friction and movement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2918462B1 (en) | Power assist device and brake system | |
| CN102931760A (en) | Compact electric servo mechanism for linear displacement | |
| CN210265738U (en) | Device capable of realizing self-locking function of ball screw pair | |
| CN114530981A (en) | Linear push-out motor assembly | |
| CN110307278B (en) | Rail vehicle electromechanical brake actuator and rail vehicle | |
| CN107546954B (en) | Single permanent magnet disk permanent magnet speed regulator | |
| CN105990986A (en) | Large-power permanent magnet clutch | |
| CN113700814B (en) | Electromechanical actuator and method for forced unlocking of fuzzy jam fault of transmission mechanism | |
| CN112128335B (en) | Linear actuator | |
| CN112297744A (en) | Energy feedback type suspension and vehicle | |
| CN108194570B (en) | Rigid-elastic conversion shock absorber | |
| CN212657146U (en) | Lever-type electromagnetic brake | |
| CN207848256U (en) | Motorcar electric floating caliper type disc braking system | |
| CN204858937U (en) | High -power permanent magnetism speed governing clutch | |
| CN113173149B (en) | Electronic brake booster | |
| CN202840803U (en) | Electromagnetic engagement mechanism | |
| CN115743524A (en) | Rudder wing servo driving system integrated with feedback mechanism | |
| CN207961391U (en) | Just elasticity conversion damper | |
| CN111503177A (en) | Lever-type electromagnetic brake | |
| CN210141810U (en) | Direct-drive gun locking mechanism | |
| CN209046444U (en) | Band-type brake structure and directly drive electric rotary machine | |
| CN210770084U (en) | Push rod rotating device | |
| CN201580430U (en) | Rear wheel steering actuating mechanism of electric control and electric four-wheeled steering device of electric vehicle | |
| CN110044204B (en) | Direct-drive gun locking mechanism | |
| CN221170626U (en) | Low-noise screw-nut transmission mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |