CN115415621A

CN115415621A - Rotary indexing device and multi-groove synchronous machining linear cutting machine tool

Info

Publication number: CN115415621A
Application number: CN202211177682.4A
Authority: CN
Inventors: 张永俊; 张广有; 苏国康; 罗红平; 刘桂贤
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2022-12-02
Anticipated expiration: 2042-09-26
Also published as: CN115415621B

Abstract

The invention discloses a rotary indexing device and a multi-groove synchronous processing wire cutting machine tool. The device includes at least three supporting and positioning mechanisms for supporting and positioning workpieces; It is distributed in a circle on the workbench; wherein, the support positioning mechanism includes a base set on the workbench, a radial limiter set on the base for radially limiting the workpiece, at least one A first universal ball support member arranged on the base for supporting the workpiece and a position adjustment assembly for adjusting the position of the radial limiting member on the base. The rotary indexing device can drive the workpiece to rotate in a full circle or multiple circles, can meet the requirement of cutting the workpiece into multiple equal parts, and has high processing flexibility.

Description

Rotary indexing device and multi-groove synchronous machining linear cutting machine tool

Technical Field

The invention relates to the technical field of machine tool machining, in particular to a rotary indexing device and a multi-groove synchronous machining linear cutting machine.

Background

The manufacturing process of the tire mold comprises a step of equally cutting the annular workpiece. According to the model of the tire mold, the tire mold is generally cut into 4-16 equal parts in blocks. In the prior art, the cutting of the tire mold is finished by utilizing a common linear cutting machine in a sequential cutting mode, the cutting efficiency is low, and internal stress is generated in the cutting process.

In order to solve the problems, a multi-groove synchronous processing linear cutting machine is adopted in the prior art to process the workpiece, the machine can synchronously feed and cut at multiple stations, the pattern block cutting efficiency is improved, and the internal stress of parts is reduced. The workpiece support table of the multi-groove synchronous processing linear cutting machine is fixed, and the workpiece cannot be rotationally indexed, so that the workpiece can be cut once, namely, the workpiece 4 is equally divided. If the mold 8 is required to be equally divided, the annular part needs to be hoisted again after the first 4-equal division processing is completed, and the annular part is manually rotated by 45 degrees and then placed on the support table again for the second processing. This method increases labor costs and is unsafe to operate, while there are large errors in manual indexing.

In order to solve the problems, the invention patent application with application publication number CN108436202A discloses a movable workpiece supporting table of a multi-groove synchronous wire-cut electric discharge machine, which comprises an annular rack, wherein the inner peripheral surface of the annular rack is provided with transmission teeth and is fixedly connected with a machine tool body, a plurality of workpiece supporting tables which are uniformly and circumferentially arranged are arranged above the annular rack, one ends of the workpiece supporting tables are respectively and fixedly connected with the outer peripheral surface of a central positioning ring to form an integral structure, the central positioning ring is sleeved on the outer peripheral surface of a central upright column and can rotate around the central axis of the central upright column, a driving motor is arranged in the working supporting table, the power output end of the driving motor faces downwards and is connected with a transmission gear, and the transmission gear is in meshing transmission with the annular rack. Compared with the prior art, the technical scheme of the invention realizes the angular rotation of the workpiece through automatic control, can improve the machining efficiency, reduce the working strength, ensure the machining quality and effectively improve the automation degree of the multi-groove wire cut electrical discharge machining tool. However, the movable workpiece support table described above has the following disadvantages:

the wire electrode support in the above-mentioned application is total four, corresponds four cutting stations respectively, and the work plummer is located between two cutting stations, and consequently, this work plummer can only rotate in the finite space between two cutting stations, and the work plummer itself occupies partial space, leads to the rotatory angle of work piece limited, can not satisfy the requirement of the polylith partition cutting of work piece, and the processing flexibility is low.

Disclosure of Invention

The present invention has been made to overcome the above problems, and an object of the present invention is to provide a rotary indexing device which can drive a workpiece to rotate for a full circle or multiple circles, can meet the requirement of cutting a plurality of equally divided pieces of the workpiece, and has high machining flexibility.

The invention also aims to provide a multi-groove synchronous processing linear cutting machine comprising the rotary indexing device.

The purpose of the invention is realized by the following technical scheme:

a rotary indexing device comprises at least three supporting and positioning mechanisms for supporting and positioning a workpiece; the plurality of supporting and positioning mechanisms are circumferentially distributed on a workbench of the multi-groove synchronous processing linear cutting machine; wherein,

the supporting and positioning mechanism comprises a base arranged on the workbench, a radial limiting part arranged on the base and used for radially limiting the workpiece, at least one first universal ball supporting part arranged on the base and used for supporting the workpiece, and a position adjusting component used for adjusting the position of the radial limiting part on the base.

The working principle of the rotary indexing device is as follows:

when the universal ball bearing device works, a workpiece is placed in the supporting and positioning mechanism on the workbench, and the first universal ball bearing piece on each mounting seat plays a supporting role on the workpiece; the position adjusting assembly can adjust the position of the radial limiting piece to realize radial limiting on the workpiece, and the workpiece and the first universal ball supporting piece are always kept in a rolling friction state, so that the driving torque is greatly reduced; after the workpiece is cut once, when the workpiece needs to be rotationally indexed, the workpiece can be manually rotated, the workpiece can be easily driven to rotate on the first universal ball supporting piece, and the indexing of the workpiece can be completed by rotating the workpiece after the cutting is completed each time and the processing is completed; the workpiece can be automatically driven to rotate by arranging the indexing driving mechanism, so that automatic rotation indexing is completed.

In a preferred embodiment of the present invention, the rotary indexing device further includes at least one indexing driving mechanism for driving the workpiece to rotate automatically; the indexing driving mechanism comprises a mounting seat arranged on the workbench, a roller arranged on the mounting seat and tangent to the workpiece, and a power assembly for driving the roller to rotate. By adopting the structure, the power assembly drives the roller to rotate, the roller is tangent to the workpiece, the rotating roller can drive the workpiece to rotate through friction force, and after each cutting, the power assembly drives the roller to rotate to drive the workpiece to rotate automatically, so that the automatic rotation indexing of the workpiece can be completed; the processing process is simplified, and the automation level of the multi-groove synchronous processing linear cutting machine is improved.

Preferably, the base is provided with counter bores or concave cavities for mounting the first universal ball supporting pieces, wherein the number of the first universal ball supporting pieces corresponds to the number of the counter bores; the bottom of the first universal ball supporting piece is connected with the bottom surface of the cavity in a sliding mode. In the structure, the counter bore is arranged, so that the first universal ball support member is convenient to mount, and the workpiece is supported; through setting up the cavity for first universal ball support piece can slide on the cavity, can adjust the position of first universal ball support piece on the cavity in a flexible way, adapts to not unidimensional work piece, is convenient for support the work piece, and the flexibility is high.

Preferably, the support positioning mechanism further comprises a second ball transfer bearing support; the radial limiting piece is provided with a radial hole for mounting the second universal ball support piece and an adjusting bolt for adjusting the radial position of the second universal ball support piece in the radial hole. In the structure, the radial holes are arranged, so that the second universal ball support member is convenient to mount, and parts are convenient to replace; the second universal ball support piece is arranged in the radial hole, and on one hand, the second universal ball support piece can move along with the radial limiting piece in the radial direction to realize radial constraint on the workpiece; on the other hand, the second universal ball support piece can be adjusted to move in the radial hole through the adjusting bolt, and the workpiece is convenient to limit when placed; in addition, the second universal ball support piece and the workpiece are always in a rolling friction state, so that the driving torque is greatly reduced, and the workpiece can be manually and easily rotated by combining the first universal ball support piece.

Preferably, the second ball transfer support is tangent to the workpiece during machining of the workpiece. In the structure, the second universal ball support is tangent to the workpiece, so that the friction force between the workpiece and the second universal ball support can be reduced, and the workpiece can move conveniently.

Further, the second ball transfer support is tangent to either the inner diameter or the outer diameter of the workpiece. When the second universal ball support is tangent to the inner diameter of the workpiece, the radial limiting part is located on the inner side of the workpiece, and when the second universal ball support is tangent to the outer diameter of the workpiece, the radial limiting part is located on the outer side of the workpiece.

Preferably, the power assembly comprises a driving motor fixed on the mounting seat, and a main shaft of the driving motor is connected with the roller through a coupling. Through setting up driving motor, can directly realize the drive to the gyro wheel to drive the work piece and rotate, simple structure.

Preferably, the radial limiting member is provided with an inclined guide surface. Its aim at, when placing the work piece, the guide face of slope plays the guide effect to the work piece, can make the work piece more smoothly put into on the base to can make the accurate centering of work piece.

Preferably, the position adjusting assembly comprises two adjusting grooves arranged on the base in parallel and a T-shaped bolt arranged between the adjusting grooves and the radial limiting part, the head of the T-shaped bolt is movably connected with the adjusting grooves, and the tail of the T-shaped bolt is connected with the radial limiting part. Through setting up adjustment tank and T type bolt, can adjust the radial position of radial locating part difference on the base in a flexible way, simple structure adjusts the convenience.

Preferably, the base and the mount are each movable in a radial direction on the table. Above-mentioned aim at can adjust the radial position of base and mount pad on the workstation in a flexible way, further makes graduation actuating mechanism, support positioning mechanism can adapt to the placing and the drive of the work piece of different diameters size.

Preferably, a layer of buffer pad is arranged between the base and the first universal ball support. Its aim at can alleviate the impact of work piece to first universal ball support piece, the blotter can play fine cushioning effect, has avoided the damage of work piece and first universal ball support piece.

Preferably, a steel ruler is arranged on the base and used for measuring the position of the radial limiting part.

Preferably, the bottom of the radial limiting part is provided with an avoiding groove, and the purpose of the avoiding groove is to prevent the radial limiting part from interfering with the first universal ball support part when moving on the base.

A multi-groove synchronous processing linear cutting machine comprises the rotary indexing device.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the rotary indexing device, the power assembly drives the roller to rotate, the rotating roller can drive the workpiece to rotate through friction force, and the workpiece can rotate in a whole circle or multiple circles, so that the requirement of equally dividing and cutting multiple pieces of the workpiece can be met, and the rotary indexing device is high in processing flexibility.

2. According to the preferred scheme, the first universal ball support part is used for bearing the weight of the workpiece, the second universal ball support part is used for radial limiting, meanwhile, the first universal ball support part, the second universal ball support part and the workpiece are always in a rolling friction state, the driving torque is greatly reduced, and the workpiece can be manually and easily rotated.

3. According to the preferred scheme, the power assembly drives the roller to rotate to drive the workpiece to rotate, so that the indexing requirement of the machine tool on the workpiece can be met, manual indexing is not needed, the machining process is simplified, the machining efficiency is improved, the defects caused by manual operation are avoided, and the automation degree and the practicability of the multi-groove synchronous machining linear cutting machine tool are effectively improved.

4. According to the preferred scheme, the guide surface is arranged, so that the workpiece can be smoothly placed and accurately centered through the guide surface in the placing process.

Drawings

Fig. 1 is a schematic perspective view of one embodiment of a multi-groove synchronous processing wire-cut electrical discharge machining apparatus according to the present invention.

FIG. 2 is a top view of the multi-groove simultaneous machining wire cut electrical discharge machining apparatus (including a workpiece) of the present invention.

Fig. 3 is a perspective view of the supporting and positioning mechanism of the present invention.

Fig. 4 is an exploded view of the indexing drive mechanism of the present invention.

FIG. 5 is a schematic structural diagram of a first ball gimbal support and a second ball gimbal support according to the present invention.

FIG. 6 is a schematic view of an installation structure of the second ball transfer unit and the adjusting bolt according to the present invention.

FIG. 7 is a schematic view of a second ball-transfer unit mounted on a radial position-limiting member according to the present invention.

FIG. 8 is a schematic structural diagram of another embodiment of the second ball-transfer unit according to the present invention mounted on a radial stop.

Fig. 9 is a schematic structural diagram of another embodiment of the supporting and positioning mechanism in the invention.

Fig. 10 is a schematic structural diagram of a third embodiment of the supporting and positioning mechanism in the invention.

Fig. 11 is a schematic structural diagram of another embodiment of the position adjusting assembly of the present invention.

Detailed Description

In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1-2, the present embodiment discloses a rotary indexing device, which includes four supporting and positioning mechanisms 2 for supporting and positioning a workpiece 6, and two indexing driving mechanisms 4 for driving the workpiece 6 to rotate; the four supporting and positioning mechanisms 2 are circumferentially distributed on a workbench 3 of the multi-groove synchronous processing linear cutting machine; the two indexing drive mechanisms 4 are oppositely arranged on the workbench 3. Four support positioning mechanism 2 are the circumference and distribute on workstation 3, when supporting work piece 6, more even to work piece 6 atress, can improve the stability that work piece 6 placed, and two graduation actuating mechanism 4 also can play certain radial positioning's effect, also can play the rotatory effect of stable drive work piece simultaneously.

Referring to fig. 1 to 3, the supporting and positioning mechanism 2 includes a base 201 disposed on the worktable 3 for supporting the workpiece 6, a radial stop 205 disposed on the base 201 for radially stopping the workpiece 6, three first ball support members 203 disposed on the base 201 for supporting the workpiece 6, a second ball support member 204 disposed on the radial stop 205, and a position adjusting assembly for adjusting the position of the radial stop 205 on the base 201; three first ball transfer supports 203 are radially distributed, and the second ball transfer support 204 is tangential to the workpiece 6. By arranging the first universal ball support member 203 and the second universal ball support member 204, on one hand, the first universal ball support member 203 can support and bear the workpiece 6, the second universal ball support member 204 moves on the base 201 along with the radial limiting member 205, and the position of the radial limiting member 205 is adjusted to enable the radial limiting member 205 to be tangent to the outer diameter of the workpiece 6, so that the workpiece 6 is radially limited; on the other hand, the first and second universal ball supports 203 and 204 can keep the workpiece 6 in a rolling friction state with the first and second universal ball supports 203 and 204, so that the driving torque is greatly reduced, the workpiece 6 is easy to rotate on the first and second universal ball supports 203 and 204, the roller 403 is easy to drive the workpiece 6 to rotate, and the workpiece 6 is indexed; the arrangement of the plurality of first universal ball supporting pieces 203 can support workpieces 6 with different diameters, so that the adaptability and the flexibility are higher.

Referring to fig. 1-3, the second ball transfer bearing support 204 is tangential to either the inner or outer diameter of the workpiece 6. When the second ball transfer unit 204 is tangent to the inner diameter of the workpiece 6, the radial position-limiting element 205 is located on the inner side of the workpiece 6, and when the second ball transfer unit 204 is tangent to the outer diameter of the workpiece 6, the radial position-limiting element 205 is located on the outer side of the workpiece 6. In the above structure, the second ball transfer support 204 is tangent to the workpiece 6, so that the friction between the workpiece 6 and the second ball transfer support 204 can be reduced, and the movement of the workpiece 6 is facilitated.

Referring to fig. 1-4, the indexing drive mechanism 4 includes a mounting base 406 disposed on the table 3, a roller 403 disposed on the mounting base 406 and tangent to the workpiece 6, and a power assembly for driving the roller 403 to rotate. The power assembly comprises a driving motor 407 fixed on the mounting seat 406, and a main shaft of the driving motor 407 is connected with the roller 403 through a coupling 405. Through setting up driving motor 407, can directly realize the drive to gyro wheel 403 to drive work piece 6 and rotate simple structure.

The gyro wheel 403 adopts the gyro wheel of rubber material, can increase the frictional force between gyro wheel 403 and the work piece, and the gyro wheel 403 of being convenient for drives the motion of work piece 6, and simultaneously, when driving motor 407 stopped drive gyro wheel 403, the frictional force of gyro wheel 403 can play fine limiting displacement to work piece 6, prevents that work piece 6 from taking place to rotate, improves the cutting process precision.

Referring to fig. 4, the roller 403 is an actuator of the indexing drive mechanism 4, and has an axis parallel to the axis of the workpiece 6; the roller 403 is tangent to the outer surface of the workpiece 6, a bearing seat 401 is arranged at the upper end of the mounting seat 406, an upper end bearing 402 and a lower end bearing 404 are arranged at two ends of the roller 403, the upper end bearing 402 is fixed on the bearing seat 401, and the lower end bearing 404 is fixed on the mounting seat 406.

Referring to fig. 3 to 4, the base 201 is provided with the counter bores 17 for mounting the first universal ball support members 203, the number of the first universal ball support members 203 corresponds to the number of the counter bores 17, the first universal ball support members 203 can slide up and down in the counter bores 17, so that the first universal ball support members 203 are detached, and the first universal ball support members 203 are connected with the counter bores 17, so that the first universal ball support members 203 cannot move in the counter bores 17 in the front-back, left-right and equal horizontal directions, and the position of the first universal ball support members 203 on the base 201 is defined. In the structure, the counter bore 17 is arranged, so that the first universal ball support member 203 can be conveniently installed, the workpiece can be supported, and the workpiece is fixed on the first universal ball support member 203 under the self-gravity of the workpiece 6.

Referring to fig. 7 and 8, the radial limiting member 205 is provided with a radial hole 16 for mounting the second ball transfer unit 204 and an adjusting bolt 15 for adjusting the radial position of the second ball transfer unit 204 in the radial hole 16. In the structure, the radial hole 16 is arranged, so that the second universal ball support 204 is convenient to mount, and parts are convenient to replace; the second ball transfer bearing 204 is mounted in the radial hole 16, and on one hand, can move radially along with the radial limiting member 205 to radially constrain the workpiece 6; on the other hand, the second ball transfer bearing support 204 can be adjusted to move in the radial hole 16 by adjusting the bolt 15, so that the workpiece 6 can be limited when the workpiece 6 is placed.

Referring to fig. 3, the radial limiting member 205 is provided with an inclined guiding surface. When placing the workpiece 6, the inclined guide surface plays a role in guiding the workpiece 6, so that the workpiece 6 can be more smoothly placed on the base 201, and the workpiece 6 can be accurately centered.

Referring to fig. 3, the position adjusting assembly includes two adjusting slots disposed in parallel on the base 201 and a T-shaped bolt disposed between the adjusting slots and the radial limiting member 205, wherein a head of the T-shaped bolt is movably connected to the adjusting slots, and a tail of the T-shaped bolt is connected to the radial limiting member 205 through a nut. Through setting up adjustment tank and T type bolt, can adjust the radial position of radial locating part 205 difference on base 201 in a flexible way, simple structure adjusts the convenience.

Referring to fig. 1-2, the base 201 and the mount 406 are each movable in a radial direction on the table 3. The position of the workbench 3 corresponding to the mounting seat 406 is provided with a T-shaped groove, the mounting seat 406 is also connected with the T-shaped groove of the workbench 3 through a T-shaped bolt, and meanwhile, the mounting seat 406 can move along the T-shaped groove in the radial direction to apply pre-tightening force between the roller 403 and the workpiece 6. The purpose is that the radial positions of the base 201 and the mounting seat 406 on the workbench 3 can be flexibly adjusted, and the indexing drive mechanism 4 and the supporting and positioning mechanism 2 can be further suitable for placing and driving workpieces 6 with different diameters; in addition, the base 201 also adopts the same structure (the structure of combining the T-shaped groove with the T-shaped bolt) as the above structure so as to realize the movement and position adjustment of the base 201 on the workbench along the radial direction.

Referring to fig. 3, a cushion is disposed between the base 201 and the first universal ball support 203. Its aim at can alleviate the impact of work piece 6 to first universal ball support piece 203, the blotter can play fine cushioning effect, has avoided the damage of work piece 6 and first universal ball support piece 203.

Referring to fig. 3, the cushion may be disposed in the counterbore 17.

Referring to fig. 3, a steel ruler 202 is arranged on the base 201, and scales are arranged on the steel ruler 202 and used for measuring the position of the radial limiting member 205.

Referring to fig. 11, an avoiding groove 10 is formed at the bottom of the radial limiting member 205 for preventing the radial limiting member 205 from interfering with the first universal ball support member 203 when moving on the base 201.

Referring to fig. 1, the base 201 is a unitary base. Its aim at, the structure is compacter, reduces the part assembly process.

Referring to fig. 5, each of the first and

second ball bearings

203 and 204 includes a support base 7, a cover 9, a ball 8 disposed on the support base 7, and a plurality of beads 14 disposed between the ball 8 and the support base 7.

Referring to fig. 6 to 7, the adjusting bolt 15 may be fixedly connected with the supporting seat 7 of the second ball-transfer unit 204, and the adjusting bolt 15 is screwed to move in the radial limiting member 205, so as to drive the second ball-transfer unit 204 to move in the radial hole 16, thereby adjusting the position.

Referring to fig. 1 to 8, the operation principle of the rotary indexing device is as follows:

the processed workpiece 6 is an annular workpiece 6, the supporting and positioning mechanism 2 is fixed on a workbench 3 of the multi-groove synchronous processing linear cutting machine through bolt connection, at the moment, the indexing driving mechanism 4 is fixed on the outer side of the workbench 3 through a T-shaped bolt, the radial limiting piece 205 is fixed at a scale corresponding to the outer diameter of the workpiece 6, then the position of the second universal ball supporting piece 204 in the radial hole 16 is adjusted through the adjusting bolt 15, so that the second universal ball supporting piece 204 is completely embedded into the radial hole 16, then the workpiece 6 is placed, the guide surface of the radial limiting piece 205 can guide the workpiece 6 to smoothly fall down and can ensure that the axis of the annular workpiece 6 is coincident with the central axis of the workbench 3, and the workpiece 6 is fixed on the first universal ball supporting piece 203 by self gravity.

After the workpiece 6 is placed, the front and back positions of the second universal ball support 204 in the radial hole 16 are adjusted through the adjusting bolt, so that the second universal ball support 204 is in tangential contact with the outer diameter of the workpiece 6, meanwhile, the roller 403 is in contact with the outer diameter of the workpiece 6 and keeps a certain pressure by moving the position of the T-shaped groove of the mounting seat 406 on the workbench 3, then the position of the mounting seat 406 is fixed through the T-shaped bolt, so that a certain friction force between the roller 403 and the workpiece 6 is ensured, and after the workpiece 6 is positioned, the workpiece 6 is cut for the first time.

After the first cut is completed, the workpiece 6 is divided equally by 4; the controller sends a certain number of pulse signals to the driving motors 407, the two driving motors 407 work simultaneously, the roller 403 is driven to rotate through the coupler 405, the rotating roller 403 can drive the workpiece 6 to rotate through friction force, and after the workpiece 6 rotates by 45 degrees, secondary cutting is performed, namely 8 equal divisions of the workpiece 6 are realized. The relationship between the rotation angle of the workpiece 6 and the number of pulses can be accurately calculated through the transmission ratio, so that the rotary indexing device in the embodiment can realize machining in various modes, such as 12, 16, 20 and the like.

Example 2

The other structure in this embodiment is the same as embodiment 1 except that the roller 403 is tangent to the inner surface of the workpiece 6. The rollers 403 are also tangential to the inner surface of the workpiece 6 to enable the workpiece 6 to be driven.

Example 3

Referring to fig. 6 and 8, the other structure of the present embodiment is the same as that of embodiment 1, except that the adjusting bolt 15 is provided separately from the supporting seat 7 of the second ball-transfer unit 204, and by screwing the adjusting bolt 15, the adjusting bolt 15 moves in the radial stopper 205, thereby pushing the second ball-transfer unit 204 to move in the radial hole 16, and further, the position adjustment is performed.

Example 4

Referring to fig. 9, the other structure of this embodiment is the same as that of embodiment 1, except that a cavity 209 is formed on the base 201, and the bottom of the first universal ball support member 203 is slidably connected to the bottom surface of the cavity 209. Through setting up cavity 209 for first universal ball support piece 203 can slide on cavity 209, can adjust the position of first universal ball support piece on cavity 209 in a flexible way, adapts to not unidimensional work piece, is convenient for support the work piece, and the flexibility is high.

Referring to fig. 9, the supporting seat 7 and the cavity 209 of the first universal ball support 203 are both provided with drain holes to prevent the working fluid from accumulating in the supporting seat 7 and the cavity 209.

Example 5

Referring to fig. 10, the other structure of this embodiment is the same as that of embodiment 4, except that the base 201 is a separate base, and includes a support body 207 at the lower end and a mounting body 206 at the upper end, the cavity 209 and the radial stop 205 are both disposed on the mounting body 206, and a sealing structure is disposed between the mounting body 206 and the support body 207 for isolating the working fluid.

Example 6

Referring to fig. 11, the other structure of the present embodiment is the same as that of embodiment 1, except that the position adjustment assembly includes two guide rails 11 disposed in parallel on a base 201, a guide groove 12 disposed on the radial limiting member 205, and a fixing bolt 13, and the guide groove 12 is connected with the guide rails 11 in a sliding fit manner. Through setting up guide rail 11 and guide way 12 for radial locating part 205 is more stable on base 201 motion, is convenient for adjust the position of radial locating part 205, and after the position control, can guarantee through fixing bolt 13 that radial locating part 205 fixes on the guide rail, plays the effect of location and fixed.

Example 7

Referring to fig. 1-2, the embodiment discloses a multi-groove synchronous processing linear cutting machine, which comprises a worktable 3, a central column 5 arranged in the middle of the worktable 3, four wire frames 1 arranged on the worktable 3 and used for cutting workpieces 6, and a rotary indexing device; the four wire frames 1 are radially distributed around the center of the workbench 3, and each supporting and positioning mechanism 2 is arranged between two adjacent wire frames 1; the two driving indexing driving mechanisms 4 are oppositely arranged, and each indexing driving mechanism 4 is also positioned between two adjacent wire frames 1.

Example 8

The other structure in this embodiment is the same as embodiment 6, except that the number of the wire frames 1 may be five or other numbers, and the number of the supporting and positioning mechanisms 2 and the number of the wire frames 1 correspond to each other.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims

1. A rotary indexing device is characterized by comprising at least three supporting and positioning mechanisms for supporting and positioning a workpiece; the plurality of supporting and positioning mechanisms are circumferentially distributed on a workbench of the multi-groove synchronous processing linear cutting machine; wherein,

2. A rotary indexing device according to claim 1, further comprising at least one indexing drive mechanism for driving the workpiece for automatic rotation; the indexing driving mechanism comprises a mounting seat arranged on the workbench, a roller arranged on the mounting seat and tangent to the workpiece, and a power assembly for driving the roller to rotate.

3. A rotary indexing device according to claim 1, wherein the base is provided with counter bores or cavities for mounting the first universal ball supports, wherein the number of the first universal ball supports corresponds to the number of the counter bores; the bottom of the first universal ball supporting piece is connected with the bottom surface of the cavity in a sliding mode.

4. A rotary indexing device according to claim 1, wherein the support and positioning mechanism further comprises a second ball transfer bearing; the radial limiting piece is provided with a radial hole for mounting the second universal ball support piece and an adjusting bolt for adjusting the radial position of the second universal ball support piece in the radial hole.

5. A rotary indexing mechanism according to claim 2, wherein the power assembly comprises a drive motor fixed to the mounting base, the main shaft of the drive motor being coupled to the roller via a coupling.

6. A rotary indexing mechanism according to claim 1, wherein the radial stop member is provided with an inclined guide surface.

7. A rotary indexing mechanism according to claim 1, wherein the base and the mount are each movable in a radial direction on the table.

8. A rotary indexing mechanism according to claim 1, wherein a cushion is provided between the base and the first ball bearing support.

9. A rotary indexing mechanism according to claim 1, wherein the base is a unitary base or a discrete base; the discrete base includes a support body at a lower end and a mounting body at an upper end.

10. A multi-slot synchronous wire cutting machine comprising a rotary indexing mechanism as claimed in any one of claims 1 to 9.