CN215392990U

CN215392990U - Linear cutting positioning tool

Info

Publication number: CN215392990U
Application number: CN202121737372.4U
Authority: CN
Inventors: 王卫锋; 王钰; 吴学珍; 杨琴英
Original assignee: Suzhou Huifeng Machinery Equipment Co ltd
Current assignee: Suzhou Huifeng Machinery Equipment Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-01-04
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a linear cutting positioning tool, which aims at solving the problem of how to clamp annular workpieces stacked in batches and provides the following technical scheme, the linear cutting positioning tool comprises a chuck arranged on a lathe bed of a linear cutting machine, at least three clamping jaws connected to the chuck in a sliding manner and a sliding driving assembly used for driving the clamping jaws to clamp the workpieces, wherein the clamping jaws are contacted with the inner circumferential surface of the workpieces; the outer circular surface of the chuck is provided with an end surface extension component for extending the diameter of the chuck; the top surface of the clamping jaw is detachably connected with an extension block, and the extension block is contacted with the inner circumferential surface of a workpiece. The top surface installation at the clamping jaw extends the piece, guarantees that the inner cylinder face of each work piece is all held, realizes fixed when a plurality of work pieces, in addition, when the diameter of work piece was too big, at the outer cylinder face installation terminal surface extension subassembly of (holding) chuck, increases the area that supports the work piece, avoids cantilever structure to cause the upset accident of work piece, protects the work piece.

Description

Linear cutting positioning tool

Technical Field

The utility model relates to the technical field of tool fixtures, in particular to a linear cutting positioning tool.

Background

The linear cutting positioning tool is a positioning tool used for ensuring the size of linear cutting, improving the precision and efficiency of cutting workpieces and reducing cutting errors.

Referring to fig. 1, for the wire cutting of a batch of circular ring workpieces along the circumferential direction, generally, the wire cutting is performed one workpiece by one workpiece, the wire cutting method is long in time consumption and low in efficiency, and the batch wire cutting can be performed by a method of stacking end faces of the batch circular ring workpieces together, but the existing clamp does not meet the fixing and positioning requirements of the stacked workpieces, and therefore, a positioning tool suitable for the batch wire cutting of the circular ring workpieces is needed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a linear cutting positioning tool which has the advantages of being capable of clamping the annular workpieces stacked in batches and accurate in positioning.

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

a linear cutting positioning tool comprises a chuck arranged on a lathe body of a linear cutting machine, at least three clamping jaws connected to the chuck in a sliding mode, and a sliding driving assembly used for driving the clamping jaws to clamp a workpiece, wherein the clamping jaws are in contact with the inner circumferential surface of the workpiece; the outer circular surface of the chuck is provided with an end surface extension assembly for extending the diameter of the chuck; the top surface of the clamping jaw is detachably connected with an extension block, and the extension block is in contact with the inner circumferential surface of the workpiece.

By adopting the technical scheme, the workpiece is placed on the chuck, the sliding driving assembly drives the plurality of clamping jaws simultaneously, and the clamping jaws abut against the inner cylindrical surface of the workpiece, so that the fixation of the single workpiece is realized. When a plurality of workpieces are stacked together along the direction of gravity, the extension block is arranged on the top surface of the clamping jaw, so that the inner cylindrical surface of each workpiece is clamped, and the workpieces are fixed at the same time. When the diameter of the workpiece is too large, the workpiece extends out of the chuck for too long to form a cantilever structure, the end face extension assembly is mounted on the outer cylindrical face of the chuck, the area for supporting the workpiece is increased, the overturning accident of the workpiece caused by the cantilever structure is avoided, the workpiece is protected, and the safety of the positioning tool is improved. The device is suitable for workpieces with more sizes, and is suitable for batch processing, so that the working efficiency is improved, and the cost is reduced.

Furthermore, the top surface of clamping jaw and the top surface of extending the piece all fixedly are equipped with first locating piece and second locating piece, first locating piece and second locating piece mutually perpendicular, the bottom surface of extending the piece is equipped with the first constant head tank that supplies first locating piece to stretch into and the second constant head tank that supplies the second locating piece to stretch into.

Adopt above-mentioned technical scheme, when the height of a plurality of work pieces of piling up is higher than the height of clamping jaw, the height of centre gripping as required, install a plurality of extension pieces each other and install on the clamping jaw, first locating piece and the second locating piece at the top of clamping jaw stretch into the first constant head tank and the first constant head tank of the bottom surface of extension piece respectively, the first constant head tank and the first constant head tank of the bottom surface of the extension piece that lie in the top are stretched into respectively to the first locating piece and the second locating piece at the top of extension piece, first locating piece and second location mutually perpendicular, restrict a plurality of extension pieces and the degree of freedom of clamping jaw on the horizontal plane. Relative fixing of the plurality of extension blocks and the clamping jaws on the clamping chuck is realized, so that the plurality of extension blocks effectively fix the inner cylindrical surfaces of a plurality of workpieces at the same time.

Furthermore, the first positioning block and the second positioning block are respectively in minimum clearance fit with the first positioning groove and the second positioning groove.

By adopting the technical scheme, the first positioning block and the second positioning block are respectively matched with the first positioning groove and the second positioning groove in a minimum clearance fit mode, so that the mutual displacement between the plurality of extension blocks and between the extension blocks and the clamping jaws is minimum, the positioning for clamping a plurality of workpieces is accurate, the convenience in mutual detachment of the plurality of extension blocks is also ensured, and the extension blocks are convenient to detach from the clamping jaws.

Further, the fixed chassis that is equipped with in bottom surface of (holding) chuck, the terminal surface extends the subassembly and includes extension ring and the supporting disk of connecting in the bottom surface of chassis in a detachable manner, it sets up on the outer disc of (holding) chuck to extend the ring through the supporting disk, the top surface that extends the ring coincides with the top surface of (holding) chuck.

By adopting the technical scheme, the supporting disk is fixed on the bottom surface of the chassis, the extension ring is fixed on the outer circular surface of the chuck, the extension ring and the chuck support the workpiece together, the supporting area of the bottom surface of the workpiece with a larger diameter is increased, the cantilever structure is reduced, and the workpiece is more stably fixed. The top surface of the extension ring is overlapped with the top surface of the chuck, so that the extension ring and the top surface of the chuck are in contact with the workpiece together, the supporting area of the extension ring and the bottom surface of the workpiece is increased, the pressure intensity is reduced, and the surface of the workpiece is protected.

Furthermore, the one end that is close to the supporting disk of extension ring is equipped with the third constant head tank, the fixed holding ring that is equipped with the extension into the third constant head tank in top surface of supporting disk, the holding ring is the scarf with the contact surface of third constant head tank.

Adopt above-mentioned technical scheme, when the supporting disk is installed on the chassis, stretch into the third constant head tank with the holding ring, the wedge face of third constant head tank and holding ring is with the leading-in third constant head tank of holding ring, the wedge face is mutually supported, form the structure that rises and tightly, stretch into the third constant head tank along with the holding ring, the mutual packing force between holding ring and the third constant head tank is bigger and bigger, frictional force is big more, the holding ring is fixed more firm in the third constant head tank, increase the practicality of location frock, moreover, the steam generator is simple in structure, the preparation is convenient, and the realization is easy.

Furthermore, a gap is reserved between the bottom of the third positioning groove and the end face of the positioning ring.

Adopt above-mentioned technical scheme, when fixing the holding ring on extending the ring, the tank bottom of third constant head tank and the clearance between the terminal surface of holding ring prevent long-time use back, and the wedging face between holding ring and the third constant head tank becomes the pine and the terminal surface of the holding ring that leads to withstands the tank bottom of third constant head tank for the holding ring is compressed tightly in the third constant head tank and is diminished, and consequently the fastening between holding ring and the third constant head tank is guaranteed in the clearance is effective.

Further, supporting disk threaded connection has first bolt, the one end of the double-screw bolt of first bolt and the bottom surface of extending the ring are tight in top each other.

By adopting the technical scheme, when the extension ring is detached from the chuck plate, the first bolt is rotated, one end of the stud of the first bolt abuts against the lower end face of the extension ring, the positioning ring is moved out of the third positioning groove, the extension ring is convenient to detach, and the extension ring is simple in structure and convenient to use.

Further, the supporting disk is provided with a second bolt, and the chassis is provided with a threaded hole for screwing the second bolt in.

Adopt above-mentioned technical scheme, when needs are fixed the supporting disk on the chassis with extending the dish, rotatory second screw thread turns into thrust with the revolving force with the help of thread engagement, pushes the supporting disk to the chassis to drive the holding ring and stretch into in the third constant head tank, help the wedging between holding ring and the third constant head tank, realize extending the ring and supporting disk and holding chuck between fixed.

In conclusion, the utility model has the following beneficial effects:

1. the positioning tool can be suitable for linear cutting machining of a single or a plurality of workpieces, can also be suitable for machining of workpieces with enlarged diameters, and increases the applicability of the positioning tool;

2. the detachable structure of the extension block and the end face extension ring ensures that more kinds of workpieces can be clamped without replacing a positioning tool, thereby reducing the cost;

3. the wedging structure between the positioning ring and the third positioning groove realizes the relative fixation between the positioning ring and the third positioning groove, and has the advantages of simple structure, convenient manufacture and easy realization;

4. the clamping jaws clamp the inner circle of the workpiece along the circumferential surface at the same time, so that the centering precision of the workpiece is high.

Drawings

FIG. 1 is a schematic view of a workpiece structure;

FIG. 2 is a schematic structural diagram of the present embodiment;

FIG. 3 is a schematic structural diagram of the bottom of the extension block of the present embodiment;

FIG. 4 is a cross-sectional view of the end extension assembly of the present embodiment;

fig. 5 is a sectional view of the slide driving assembly of the present embodiment.

In the figure: 1. a workpiece; 2. a clamping jaw; 3. an extension block; 31. a first positioning block; 32. a second positioning block; 33. a first positioning groove; 34. a second positioning groove; 4. a chuck; 5. an end face extension assembly; 51. a support disc; 52. an extension ring; 53. a positioning ring; 54. a third positioning groove; 6. a first bolt; 7. a second bolt; 8. a slip drive assembly; 81. a turntable; 811. a planar thread; 812. a large bevel gear; 82. a guide rail; 83. a bevel pinion gear; 84. a hexagonal groove; 9. a chassis.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

A wire cutting positioning tool, see figures 2 and 5, comprises a circular chuck 4, three clamping jaws 2 and a sliding driving assembly 8, wherein the circular chuck is horizontally and fixedly connected to the bed of a wire cutting machine tool. The three clamping jaws 2 are uniformly distributed on the top surface of the chuck 4, three grooves for the three clamping jaws 2 to slide are formed in the top surface of the chuck 4, and the three grooves of the chuck 4 are arranged along the radial direction of the chuck 4. The centre of a circle of the chuck 4 is provided with a through hole.

Referring to fig. 2 and 5, the sliding driving assembly 8 includes a circular turntable 81 and a guide rail 82, the guide rail 82 is fixedly connected to the side surfaces of the grooves of the chuck 4, the guide rail 82 is disposed on each of two side surfaces of the three grooves of the chuck 4, the guide rail 82 is disposed along the radial direction of the chuck 4, and sliding grooves for sliding the guide rail 82 are disposed on both sides of the clamping jaw 2. The rotary disc 81 is rotatably connected to the chuck 4, a flat thread 811 is provided on a side of the rotary disc 81 close to the clamping jaw 2, and a large bevel gear 812 is fixedly provided on a side of the rotary disc 81 far from the clamping jaw 2. The side of the jaw 2 adjacent the turntable 81 is fixedly provided with a thread which engages with the flat thread 811. Three small bevel gears 83 are uniformly arranged on the cylindrical surface of the chuck 4, the axes of the three small bevel gears 83 are arranged along the diameter direction of the chuck 4, the cylindrical surface of the chuck 4 is provided with a through hole for the small bevel gear 83 to pass through, the three small bevel gears 83 can rotate in the through hole of the chuck 4, the small bevel gears 83 are meshed with the large bevel gears 812, and one end of the small bevel gear 83, which is close to the outer cylindrical surface of the chuck 4, is provided with a hexagonal groove 84. A bottom plate 9 is fixedly connected to the bottom surface of the chuck 4, and the top surface of the bottom plate 9 abuts against the bottom of the chuck 4, so that the chuck 4, the turntable 81 and the bevel pinion 83 are supported on the chuck 4.

Referring to fig. 5, when clamping the workpiece 1, a hexagonal wrench is used to extend into the hexagonal recess 84, so that the bevel pinion 83 rotates to drive the bevel pinion 812 to rotate, the bevel pinion 812 drives the turntable 81 to rotate, the turntable 81 is engaged with the clamping jaws 2, so that the three clamping jaws 2 move toward each other, the workpiece 1 is placed on the chuck 4, and the hexagonal wrench is turned over to move the three clamping jaws 2 away from each other, so as to clamp the inner cylindrical surface of the workpiece 1.

Referring to fig. 2 and 4, the outer circumferential surface of the chuck 4 is provided with an end face extension assembly 5. The end face extension assembly 5 includes an extension ring 52 and a support disk 51. An extension ring 52 is disposed on the outer circumferential surface of the chuck 4 through a support plate 51. The top surface of the extension ring 52 is on the same plane as the top surface of the chuck 4, i.e. both coincide. The supporting disk 51 is arranged on the bottom surface of the chassis 9, eight second bolts 7 are uniformly distributed at the bottom of the supporting disk 51, eight threaded holes for screwing the second bolts 7 are formed in the chassis 9 and the supporting disk 51, one end of a stud of each second bolt 7 is in threaded connection with the threaded holes in the chassis 9, and the supporting disk 51 is fixed at the bottom of the chassis 9.

Referring to fig. 4, an end of the extension ring 52 close to the support plate 51 is provided with an annular third positioning slot 54, the third positioning slot 54 is arranged along the circumferential direction of the extension ring 52 and is concentric with the extension ring 52, the top surface of the support plate 51 is fixedly provided with a positioning ring 53 extending into the third positioning slot 54, and the positioning ring 53 is arranged along the circumferential direction of the support plate 51 and is concentric with the support plate 51. The outer circumferential surface of the positioning ring 53 is in contact with the circumferential groove surface of the positioning groove, and the inner circumferential surface of the positioning ring 53 is in contact with the outer circumferential surface of the chuck 4. The contact surface between the positioning ring 53 and the third positioning groove 54 is a wedge surface, the wedge surface of the positioning ring 53 extends from bottom to top in the direction of decreasing diameter, and correspondingly, the circumferential groove surface of the third positioning groove 54 also extends from bottom to top in the direction of decreasing diameter. A gap is left between the bottom of the third positioning groove 54 and the end surface of the positioning ring 53. The supporting disk 51 is connected with four first bolts 6 in a threaded manner, and one end of a stud of each first bolt 6 is tightly propped against the bottom surface of the extension ring 52.

Referring to fig. 2 and 4, the top surface of the jaw 2 is provided with an extension block 3, and the jaw 2 and the side of the extension block 3 away from the through hole of the chuck 4 are in contact with the inner circumferential surface of the workpiece 1. The top surface of the clamping jaw 2 and the top surface of the extension block 3 are both fixedly provided with a first positioning block 31 and a second positioning block 32, and the first positioning block 31 and the second positioning block 32 are perpendicular to each other and mutually crossed at the middle point of the length directions of each other.

Referring to fig. 2 and 3, the bottom surface of the extension block 3 is provided with a first positioning groove 33 for the first positioning block 31 to extend into and a second positioning groove 34 for the second positioning block 32 to extend into. The first and second positioning grooves 33 and 34 are perpendicular to each other and intersect each other at the midpoint in the longitudinal direction of each other. The first positioning block 31 and the second positioning block 32 are respectively in minimal clearance fit with the first positioning groove 33 and the second positioning groove 34. The extension block 3 and the clamping jaw 2 are both magnetic, and the extension block 3 and the clamping jaw 2 are mutually magnetically attracted.

Referring to fig. 2, 3 and 4, when clamping three workpieces 1 stacked in a vertical direction, two extension blocks 3 stacked in the vertical direction are respectively placed on top surfaces of three jaws 2, and a first positioning block 31 and a second positioning block 32 of each jaw 2 are respectively inserted into a first positioning groove 33 and a second positioning groove 34 of a bottom surface of an upper extension block 3. Three workpieces 1 are stacked on the chuck 4, the hexagonal groove 84 is rotated by using a hexagonal wrench, so that the three clamping jaws 2 simultaneously drive the extension blocks 3 above the clamping jaws to move towards the inner cylindrical surface close to the workpieces 1 until the three clamping jaws 2 and the extension blocks 3 above the clamping jaws 2 abut against the inner circumferential surface of the workpieces 1, and the three workpieces 1 are clamped on the clamping jaws 2 and the extension blocks 3. The extension ring 52 is sleeved on the outer circumferential surface of the chuck 4, the supporting disc 51 is fixed on the base plate 9 from the bottom surface of the base plate 9 by using the second bolt 7, the second bolt 7 drives the supporting disc 51 and the positioning ring 53 to move towards the base plate 9, the positioning ring 53 extends into the third positioning groove 54 until the positioning ring 53 is wedged in the third positioning groove 54, so that the extension ring 52 and the chuck 4 are relatively fixed, and the top surface of the extension ring 52 and the top surface of the chuck 4 jointly support the workpiece 1.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a wire-electrode cutting location frock which characterized in that: the clamping device comprises a chuck (4) arranged on a lathe body of the linear cutting machine, at least three clamping jaws (2) connected to the chuck (4) in a sliding mode and a sliding driving assembly (8) used for driving the clamping jaws (2) to clamp a workpiece (1), wherein the clamping jaws (2) are in contact with the inner circumferential surface of the workpiece (1); the outer circular surface of the chuck (4) is provided with an end surface extension assembly (5) for extending the diameter of the chuck (4); the top surface of the clamping jaw (2) is detachably connected with an extension block (3), and the extension block (3) is in contact with the inner circumferential surface of the workpiece (1).

2. The wire-electrode cutting positioning tool according to claim 1, characterized in that: the top surface of clamping jaw (2) and the top surface of extending piece (3) all are fixed and are equipped with first locating piece (31) and second locating piece (32), first locating piece (31) and second locating piece (32) mutually perpendicular, the bottom surface of extending piece (3) is equipped with first constant head tank (33) that supply first locating piece (31) to stretch into and supplies second constant head tank (34) that second locating piece (32) stretched into.

3. The wire-electrode cutting positioning tool according to claim 2, characterized in that: the first positioning block (31) and the second positioning block (32) are in minimum clearance fit with the first positioning groove (33) and the second positioning groove (34) respectively.

4. The wire-electrode cutting positioning tool according to claim 1, characterized in that: the bottom surface of (4) is fixed and is equipped with chassis (9), terminal surface extension subassembly (5) are including extending ring (52) and can dismantle supporting disk (51) of connecting in the bottom surface of chassis (9), extend ring (52) and set up on the outer disc of (4) through supporting disk (51), the top surface of extending ring (52) and the coincidence of the top surface of (4).

5. The wire-electrode cutting positioning tool according to claim 4, characterized in that: the one end that is close to supporting disk (51) of extension ring (52) is equipped with third constant head tank (54), the top surface of supporting disk (51) is fixed to be equipped with and extends into holding ring (53) of third constant head tank (54), the contact surface of holding ring (53) and third constant head tank (54) is the scarf.

6. The wire-electrode cutting positioning tool according to claim 5, characterized in that: and a gap is reserved between the bottom of the third positioning groove (54) and the end surface of the positioning ring (53).

7. The wire-electrode cutting positioning tool according to claim 4, characterized in that: the supporting disc (51) is in threaded connection with a first bolt (6), and one end of a stud of the first bolt (6) is tightly propped against the bottom surface of the extension ring (52).

8. The wire-electrode cutting positioning tool according to claim 4, characterized in that: the supporting plate (51) is provided with a second bolt (7), and the chassis (9) is provided with a threaded hole for screwing the second bolt (7).