CN216730599U - B-axis turntable structure - Google Patents

Abstract

The utility model discloses a B-axis turntable structure which comprises a Z-axis sliding table, a torque motor arranged on the Z-axis sliding table, a flange plate in transmission connection with the output end of the torque motor, a coded disc, a grating reading head, a round cover and a chuck, wherein the flange plate is arranged on the output end of the torque motor; the chuck is used for installing the processing main shaft and is fixedly connected with the round cover. The B-axis turntable structure is arranged on a turning and milling compound machine tool, the flange plate is arranged at the output end of the torque motor, the code disc and the grating reading head are ingeniously arranged in front of the torque motor, and the space in the middle of the B-axis turntable is reasonably utilized, so that the occupied space of parts behind the Z-axis sliding table is greatly reduced, a lead screw of the lead screw driving mechanism can be compactly arranged behind the torque motor and cannot be in motion interference with the torque motor, a lead screw nut of the lead screw driving mechanism is arranged on a transmission joint, and the lead screw driving mechanism drives the B-axis turntable structure to move in the vertical direction through the driving of the motor.

Description

B-axis turntable structure

Technical Field

The utility model relates to the technical field of numerical control equipment, in particular to a B-axis turntable structure.

Background

The turning and milling combined machine tool is a five-axis linkage machine tool which mainly performs turning and assists milling, boring, drilling, tapping and the like. In a turning and milling combined machine tool, a clamping main shaft for clamping a bar is generally arranged, the clamping main shaft is parallel to an A shaft, in order to enable the processing main shaft to complete processing and tool clamping operations in a multi-angle manner, the processing main shaft is required to be arranged on a B shaft rotary table, so that the main shaft can swing around the B shaft, and then in order to enable the processing main shaft to vertically move, the B shaft rotary table is arranged on a Z shaft sliding table, a lead screw driving mechanism is arranged on one side of the Z shaft sliding table far away from the B shaft rotary table, the lead screw driving mechanism drives the Z shaft sliding table, a B shaft rotary table on the Z shaft sliding table and the processing main shaft to vertically move, a detection mechanism is generally arranged on the tail part of the existing B shaft rotary table to measure the angle displacement of the B shaft rotary table driving the processing main shaft to swing, but the structure of the B shaft rotary table can increase the tail part of the B shaft rotary table, so that the detection mechanism interferes with a lead screw of the lead screw driving mechanism, the design of the turning and milling composite machine tool is not facilitated to be compact.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the utility model aims to provide a B-axis turntable structure, which aims to install a detection mechanism in the middle of the B-axis turntable and avoid the influence on the compact design of a screw rod driving mechanism caused by overlarge occupied space at the tail part of the B-axis turntable structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a B-axis turntable structure comprises a Z-axis sliding table, a torque motor, a flange plate, a coded disc, a grating reading head, a round cover and a chuck; the Z-axis sliding table comprises a sliding plate part with a through middle part, a cylindrical part protruding from the front of the sliding plate part and a transmission joint protruding from the rear of the sliding plate part, and the transmission joint is used for being fixedly connected with a screw rod nut; the torque motor penetrates through the sliding plate part and is fixed on the cylindrical part, the output end of the torque motor faces the front, one end face of the flange plate is in transmission connection with the output end of the torque motor, the coded disc is sleeved on the flange plate, the grating reading head is fixed on the cylindrical part and detects scales on the coded disc, the other end face of the flange plate is in screw connection with the round cover, the coded disc is surrounded by the round cover, and the chuck is used for installing and processing the main shaft and is fixedly connected with the round cover.

As a further improvement of the above technical solution, the front end of the cylindrical portion protrudes toward the inner cavity to form an inner retainer ring, and the head of the torque motor is connected with the inner retainer ring by a screw.

As a further improvement of the technical scheme, the flange plate comprises a flange main body and a positioning outer ring surrounding the peripheral wall of the flange main body, the coded disc is sleeved on the flange main body and abuts against the positioning outer ring, and the coded disc is fixedly connected with the positioning outer ring.

As a further improvement of the technical scheme, the round cover comprises a round cover plate and a surrounding edge arranged behind the cover plate, the cover plate is connected with the flange main body through screws, and the surrounding edge is arranged on the periphery of the coded disc.

As a further improvement of the technical scheme, the chuck comprises a circular joint part connected with a circular cover screw and a clamping part used for installing a processing main shaft, and a positioning circular groove connected with the circular joint part is formed in the front end face of the cover plate.

As a further improvement of the technical scheme, the outer diameters of the circular joint part of the chuck, the circular cover and the cylindrical part of the Z-axis sliding table are all equal and are wrapped by the protective cylinder.

As a further improvement of the technical scheme, a slide block mounting groove is formed in the corner of the rear end face of the slide plate part.

As a further improvement of the above technical scheme, one end of the transmission joint is integrally formed with the sliding plate portion, the other end of the transmission joint forms two supporting claws, the two supporting claws surround to form a mounting opening, and a plurality of threaded holes are formed in the upper end face of each supporting claw.

Has the advantages that:

compared with the prior art, the B-axis turntable structure provided by the utility model has the advantages that the flange plate is arranged at the output end of the torque motor, the coded disc and the grating reading head are skillfully arranged in front of the torque motor, the space in the middle of the B-axis turntable is reasonably utilized, so that the occupied space of parts behind the Z-axis sliding table is greatly reduced, a lead screw of the lead screw driving mechanism can be compactly arranged behind the torque motor and cannot be interfered with the motion of the torque motor, a lead screw nut of the lead screw driving mechanism is arranged on the transmission joint, and the lead screw driving mechanism drives the B-axis turntable structure to move in the vertical direction through the driving of the motor.

Drawings

Fig. 1 is a first perspective view of the turning and milling compound machine tool provided by the utility model.

Fig. 2 is a second perspective view of the turning and milling composite machine tool provided by the utility model.

Fig. 3 is a partially enlarged view of the area a in fig. 2.

Fig. 4 is a schematic diagram of an internal structure of a B-axis turntable structure provided in the present invention.

FIG. 5 is a schematic view of a structure of a code wheel mounted on a flange.

Fig. 6 is a perspective view of the Z-axis sliding table provided by the present invention.

Fig. 7 is a perspective view of the flange provided by the present invention.

Fig. 8 is a perspective view of a chuck provided by the present invention.

Description of the main element symbols: 1-Z-axis sliding table, 2-torque motor, 3-flange plate, 4-code disc, 5-grating read head, 51-bracket, 6-round cover, 7-chuck, 11-sliding plate part, 12-cylindrical part, 13-transmission joint, 131-supporting claw, 132-mounting port, 133-threaded hole, 14-inner retainer ring, 15-sliding block mounting groove, 31-flange main body, 32-positioning outer ring, 61-cover plate, 62-surrounding edge, 71-round joint part, 72-clamping part, 8-protective cylinder, 91-processing main shaft, 92-clamping main shaft, 93-X-axis screw rod driving mechanism, 94-Y-axis screw rod driving mechanism, 95-Z-axis screw rod driving mechanism, 96-lathe bed, 97-Y-axis sliding table, 96-Y-axis screw rod driving mechanism, 98-X axis sliding table, 102-screw rod nut, 971-guide rail and 972-sliding block.

Detailed Description

The present invention provides a B-axis turntable structure, and in order to make the objects, technical solutions, and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of the utility model.

Herein, the Y-axis direction is a front-back direction, the X-axis direction is a left-right direction, the Z-axis direction is an up-down direction, and the direction of the B-axis turntable structure toward the clamping main shaft 92 is a front direction, and the "front" direction is opposite to the "rear" direction.

Referring to fig. 1-8, the present invention provides a B-axis turntable structure, which includes a Z-axis sliding table 1, a torque motor 2, a flange 3, a code wheel 4, a grating reading head 5, a round cover 6 and a chuck 7; the Z-axis sliding table 1 comprises a sliding plate part 11 with a through middle part, a cylindrical part 12 protruding from the front of the sliding plate part 11 and a transmission joint 13 protruding from the rear of the sliding plate part 11, wherein the transmission joint 13 is fixedly connected with a lead screw nut 102; the torque motor 2 penetrates through the sliding plate part 11 and is fixed on the cylindrical part 12, the output end of the torque motor 2 is arranged towards the front, one end face of the flange plate 3 is in transmission connection with the output end of the torque motor 2, the coded disc 4 is sleeved on the flange plate 3, the grating read head 5 is fixed on the cylindrical part 12 through the support 51 and detects scales on the coded disc 4, the other end face of the flange plate 3 is in screw connection with the circular cover 6, the coded disc 4 is surrounded by the circular cover 6, and the chuck 7 is used for installing the processing main shaft 91 and is fixedly connected with the circular cover 6.

In the actual assembly of the turning and milling combined machine tool, firstly, the assembly of the B-axis turntable structure is completed, as shown in fig. 4, that is, the head of the torque motor 2 penetrates through the sliding plate portion 11 and is fixed on the cylindrical portion 12, the tail of the torque motor 2 protrudes towards the rear of the sliding plate portion 11, then the rear end face of the flange 3 is fixed on the output end of the torque motor 2, the code disc 4 is sleeved on the flange 3, the grating reading head 5 is installed on the cylindrical portion 12, the grating reading head 5 detects the scales on the code disc 4 and feeds back a signal to the control system, and the control system accurately measures the angular displacement of the B-axis turntable driving the machining spindle 91 to swing after signal processing. The round cover 6 is closely installed on the front end face of the flange plate 3, the surrounding edge 62 of the round cover 6 surrounds the periphery of the code wheel 4 but is not in contact with the cylindrical part 12, the surrounding edge 62 of the round cover plays a role in dust prevention and protection for the code wheel 4, then the chuck 7 is in screw connection with the round cover 6, the processing main shaft is installed on the chuck 7, and the whole assembly of the B-axis turntable is completed smoothly. Set up Z axle slip table 1 slidable on Y axle slip table 97 at last, be equipped with two guide rail 971 along vertical extension on Y axle slip table 97, be equipped with slider mounting groove 15 on the rear end face edge of slide plate portion 11, set firmly slider 972 in every slider mounting groove 15, every slider 972 and the guide rail 971 sliding connection that corresponds make Z axle slip table 1 can smoothly vertical removal.

Compared with the prior art, the B-axis turntable structure provided by the utility model has the advantages that the flange plate 3 is arranged at the output end of the torque motor 2, the code disc 4 and the grating reading head 5 are skillfully arranged in front of the torque motor 2, and the space in the middle of the B-axis turntable is reasonably utilized, so that the occupied space of parts behind the Z-axis turntable 1 is greatly reduced, the lead screw 101 of the lead screw driving mechanism can be compactly arranged behind the torque motor 2 and cannot interfere with the motion of the torque motor 2, the lead screw nut 102 of the lead screw driving mechanism is arranged on the transmission joint 13, and the lead screw driving mechanism drives the B-axis turntable structure to move along the up-down direction through the driving of the motor.

The working principle of the B-axis turntable structure is briefly described as follows: the torque motor provides strong rotating torque to drive the flange 3, the code disc 4, the circular cover 6, the chuck 7 and the processing main shaft 91 to synchronously rotate around the B shaft (namely the extension direction of a dotted line in figure 4), so that the processing main shaft flexibly swings according to the actual cutting working condition, and a multi-angle processing effect is formed. When the machining spindle is used for tool changing, the torque motor drives the machining spindle to swing from a vertical state to a horizontal state so as to be matched with a tool magazine to automatically change tools.

It should be understood that if the occupied space of the tail of the torque motor is too large, the Z-axis screw driving mechanism 95 needs to move backwards integrally, so that the Z-axis screw driving mechanism 95 is located in the middle of the Y-axis sliding table 97, and the worker is prevented from performing assembly operation inside the Y-axis sliding table 97. In addition, since the Z-axis screw driving mechanism 95 needs to be moved backward integrally, the length of the Y-axis slide table 97 in the front-rear direction is increased, which affects the sliding distance of the Y-axis slide table 97. Also, the mounting opening 132 of the transmission joint 13 is far away from the sliding plate part, which affects the smoothness of the vertical movement of the Z-axis sliding table 1 driven by the Z-axis lead screw driving mechanism 95.

Specifically, as shown in fig. 6, the front end of the cylindrical portion 12 protrudes toward the inner cavity to form an inner retainer ring 14, a step 121 adapted to the outer shell of the torque motor 2 is disposed on the inner wall of the cylindrical portion 12, axial positioning is formed by the torque motor 2 through the step and the inner retainer ring 14, a plurality of mounting through holes 122 are disposed on the inner retainer ring 14, each mounting through hole is provided with a screw, the head of the torque motor 2 is fixedly connected with the inner retainer ring 14 through the screw, so that circumferential positioning of the torque motor 2 is completed, and the output end of the torque motor 2 penetrates through the middle of the inner retainer ring 14.

Specifically, as shown in fig. 4 and 7, the flange 3 includes a flange main body 31 and a positioning outer ring 32 disposed around a peripheral wall of the flange main body 31, the flange main body 31 and the positioning outer ring 32 are integrally formed, the code wheel 4 is sleeved on the flange main body 31 and abuts against the positioning outer ring 32, so that the code wheel 4 is axially positioned, and the code wheel 4 is screwed with the positioning outer ring 32, so that the code wheel 4 can rotate along with the flange 3.

Further, the round cover 6 comprises a round cover plate 61 and a surrounding edge 62 arranged behind the cover plate 61, the rear end face of the cover plate 61 is connected with the flange main body 31 through screws, the surrounding edge 62 is arranged on the periphery of the code wheel 4, and the surrounding edge plays a role in dust prevention and protection for the code wheel.

Specifically, referring to fig. 8, the chuck 7 includes a circular joint portion 71 in screw connection with the circular cover 6 and a clamping portion 72 for mounting a processing spindle, a positioning circular groove is formed in the front end surface of the cover plate 61, and the positioning circular groove is in fit connection with the circular joint portion 71 to achieve axial positioning of the chuck 7, so that coaxiality of the chuck 7 and the torque motor 2 is ensured, assembly deviation is reduced, and processing accuracy is improved. The clamping part 72 is of a hollow structure, and the processing spindle 91 penetrates through the clamping part 72 and is connected with a bottom flange of the clamping part 72.

Further, as shown in fig. 4, the circular joint part 71 of the collet 7, the circular cover 6 and the cylindrical part 12 of the Z-axis sliding table 1 have the same outer diameter and are wrapped by the protective cylinder 8. Because an avoiding gap is generated between the round cover 6 and the round cylinder part 12, a connecting gap is generated between the round joint part 71 and the round cover 6, and the round joint part 71, the round cover 6 and the round cylinder part 12 are completely wrapped by the protection cylinder 8, on one hand, the B-axis turntable structure is more attractive and durable, and on the other hand, the protection cylinder 8 can better prevent oil stains and dust from permeating into the B-axis turntable structure to influence the detection effects of the code disc 4 and the grating reading head 5.

Preferably, referring to fig. 6, the transmission joint 13 is disposed at the top of the sliding plate portion 11, one end of the transmission joint 13 is integrally formed with the sliding plate portion 11, the other end of the transmission joint forms two support claws 131, the two support claws 131 enclose a mounting hole 132, a lead screw nut 102 is mounted in the mounting hole 132, a plurality of threaded holes 133 are formed in the upper end surface of the support claws 131, and the lead screw nut 102 is fixed on the transmission joint 13 through the cooperation of screws and the threaded holes 133.

As shown in fig. 1 and fig. 2, the utility model further provides a turning and milling composite machine tool, which includes a machine body 96, an X-axis sliding table 98 slidably disposed on the machine body 96, an X-axis screw driving mechanism 93 for driving the X-axis sliding table 98 to move in the left-right direction, a Y-axis sliding table 97 slidably disposed on the X-axis sliding table 98, a Y-axis screw driving mechanism 94 for driving the Y-axis sliding table 97 to move in the front-back direction, a B-axis rotating table structure of any of the above embodiments or a combination of any of the above embodiments, and a Z-axis screw driving mechanism 95 for driving the Z-axis sliding table 1 to move up and down; the Z-axis sliding table 1 is slidably arranged on the Y-axis sliding table 97, the chuck 7 is provided with a processing main shaft 91, the processing main shaft 91 is clamped with a cutter, and the lathe bed 96 is provided with a clamping main shaft 92 extending along the left-right direction.

If the turning process is performed, the clamping main shaft 92 drives the workpiece (such as a bar stock) to rotate, and then the position of the tool is adjusted by a moving and feeding mode of the tool through the XYL three-axis and an angular displacement amount of the tool relative to the B axis, so that the workpiece is turned. If the milling process is carried out, the clamping main shaft 92 only fixes the workpiece, and then the machining main shaft 91 drives the cutter to rotate at a high speed to mill the static workpiece. The X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism all comprise motors, lead screws in transmission connection with the output ends of the motors, and lead screw nuts sleeved on the lead screws.

Since the above description has been made with respect to the B-axis turntable structure, it should be understood by those skilled in the art with reference to the accompanying drawings, and therefore, the description thereof will not be provided herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It should be understood that the technical solutions and the inventive concepts according to the present invention may be equally replaced or changed by those skilled in the art, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims (8)

1. A B-axis turntable structure is characterized by comprising a Z-axis sliding table, a torque motor, a flange plate, a coded disc, a grating reading head, a round cover and a chuck; the Z-axis sliding table comprises a sliding plate part with a through middle part, a cylindrical part protruding from the front of the sliding plate part and a transmission joint protruding from the rear of the sliding plate part, and the transmission joint is used for being fixedly connected with a screw rod nut; the torque motor penetrates through the sliding plate part and is fixed on the cylindrical part, the output end of the torque motor faces the front, one end face of the flange plate is in transmission connection with the output end of the torque motor, the coded disc is sleeved on the flange plate, the grating reading head is fixed on the cylindrical part and detects scales on the coded disc, the other end face of the flange plate is in screw connection with the round cover, the coded disc is surrounded by the round cover, and the chuck is used for installing and processing the main shaft and is fixedly connected with the round cover.

2. The B-axis turret structure according to claim 1, wherein an inner collar is formed by projecting a front end of the cylindrical portion toward the inner cavity, and a head of the torque motor is screwed to the inner collar.

3. The B-axis turret structure of claim 1, wherein the flange includes a flange body and a positioning outer ring disposed around a peripheral wall of the flange body, the code wheel is fitted over the flange body and abuts against the positioning outer ring, and the code wheel is fixedly coupled to the positioning outer ring.

4. The B-axis turret structure of claim 3, wherein the dome includes a circular cover plate bolted to the flange body and a skirt disposed behind the cover plate, the skirt being disposed around the periphery of the code wheel.

5. The B-axis turntable structure according to claim 4, wherein the chuck comprises a round joint part connected with a round cover screw and a clamping part for mounting a processing spindle, and the front end surface of the cover plate is provided with a positioning round groove connected with the round joint part.

6. The B-axis turret structure according to claim 5, wherein the circular joint portion of the collet, the circular cap, and the cylindrical portion of the Z-axis slide have the same outer diameter and are surrounded by a protective cylinder.

7. The B-axis turret structure according to claim 1, wherein a slider mounting groove is provided at a rear end face corner of the slide plate portion.

8. The B-axis turntable structure of claim 1, wherein one end of the transmission joint is integrally formed with the slide plate portion, and the other end of the transmission joint forms two support claws, the two support claws define a mounting opening, and the upper end surfaces of the support claws are provided with a plurality of threaded holes.

Images