CN216656639U

CN216656639U - Clamp for electric spark machining

Info

Publication number: CN216656639U
Application number: CN202122798618.5U
Authority: CN
Inventors: 李体昆
Original assignee: Guiyang Kenate Precision Machinery Co ltd
Current assignee: Guiyang Kenate Precision Machinery Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-06-03
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a clamp for electric spark machining, which relates to the technical field of electric spark machining and is used for solving the problem that an electric spark clamp in the prior art is inconvenient to clamp workpieces with different sizes. According to the technical scheme, the distance between the fixed plate and the sliding plate can be changed, so that workpieces with different sizes can be fixed between the fixed plate and the sliding plate, and the workpieces with different sizes can be clamped conveniently.

Description

Clamp for electric spark machining

Technical Field

The utility model relates to the technical field of electric spark machining, in particular to the technical field of a clamp for electric spark machining.

Background

The electric spark machining is a special machining method for removing conducting material by using the electric erosion action produced when pulse discharge is produced between two poles immersed in working liquid. The automatic gap control system controls the tool electrodes to feed to the workpiece, when the gap between the two electrodes reaches a certain distance, the pulse voltage applied to the two electrodes breaks down the working solution to generate spark discharge, so that the workpiece is subjected to electric spark machining, and when the workpiece is machined through electric sparks, the workpiece to be machined still needs to be clamped by a corresponding clamp.

The electric spark machining fixture in the prior art comprises a fixture body, a supporting surface arranged on the fixture body, a pressing block movably connected on the supporting surface and used for pressing a workpiece to be processed by electric spark on the fixture body, a positioning surface used for positioning the workpiece to be processed by electric spark, a compensation surface which is used for placing the workpiece to be processed by electric spark, compensates the processing inclination of the workpiece to be processed by electric spark and has a corresponding compensation inclination, and a reference surface which is perpendicular to the positioning surface and used for providing the processing reference of the workpiece to be processed by electric spark; the electric spark machining fixture with the structure can accurately and quickly position the workpiece to be machined, ensure the repeated positioning precision of the workpiece, reduce the deviation of human factors, improve the machining precision and shorten the machining working hours.

However, the size of the positioning surface for fixing the workpiece in the above-mentioned jig is fixed, which is inconvenient for processing workpieces of different sizes. Therefore, there is a need for a clamp that can more conveniently clamp workpieces of different sizes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problem that an electric spark clamp in the prior art is inconvenient to clamp workpieces with different sizes, the utility model provides the clamp for electric spark machining.

The utility model specifically adopts the following technical scheme for realizing the purpose:

the utility model provides an anchor clamps for spark-erosion machining, includes the base, the processing platform is installed to the top surface of base, the fixed plate is installed to the top surface of processing platform, the top surface of processing platform is opened there is the sliding tray, be equipped with the sliding plate in the sliding tray, the side-mounting of base has the backup pad, install adjusting nut in the backup pad, install the adjusting screw who passes the backup pad in the adjusting nut, the adjusting screw is connected through the bearing with the sliding tray, install the clamping mechanism who is located processing platform top in the backup pad.

The preferable structure of the clamping mechanism is as follows: the clamping mechanism comprises a rapid clamping assembly arranged along the height direction of the supporting plate, a rapid moving plate is installed on the rapid clamping assembly, a connecting block is installed on the rapid moving plate, a micro-speed clamping assembly is installed on the connecting block, and a clamping plate is installed on the micro-speed clamping assembly.

Preferably, the rapid clamping assembly comprises a rack which is installed on a supporting plate and located in the vertical direction, a top plate which is located in the horizontal direction is installed at the upper end of the supporting plate, a plurality of springs are installed on the top plate, the lower end of each spring is connected with a rapid moving plate, a through hole is formed in each rapid moving plate, a rotating motor is installed on each rapid moving plate, a gear which penetrates through the through hole and is meshed with the rack is installed on a motor shaft of each rotating motor, and a guide unit which is installed on the supporting plate is connected to each rapid moving plate.

Preferably, the guide unit comprises a first guide plate and a second guide plate which are arranged on two sides of the rack and are parallel to the rack, and the rapid moving plate is connected with the first guide plate and the second guide plate in a sliding mode.

Preferably, the side of the first guide plate is provided with a first dovetail groove, the side of the second guide plate is provided with a second dovetail groove, the rapid moving plate is integrally provided with a first dovetail protrusion and a second dovetail protrusion, the first dovetail protrusion is located in the first dovetail groove, and the second dovetail protrusion is located in the second dovetail groove.

Preferably, the micro-speed clamping assembly comprises a clamping nut installed in the connecting block, a clamping screw rod penetrating through the connecting block and located in the vertical direction is installed in the clamping nut, and the lower end of the clamping screw rod is connected with the clamping plate through a bearing.

Preferably, the bottom surface of the clamping plate is provided with a clamping groove, and a quick-change pressing plate is detachably clamped in the clamping groove.

Preferably, the top surface of the processing table is provided with an adjusting groove, and the bottom surface of the sliding plate is integrally formed with an adjusting protrusion, wherein the adjusting protrusion is located in the adjusting groove.

The utility model has the following beneficial effects:

(1) according to the utility model, the adjusting nut is connected with the adjusting screw rod through threads, and the adjusting nut is fixedly arranged in the supporting plate, so that the adjusting screw rod can be rotated to drive the sliding plate to move towards the direction of the fixed plate or away from the fixed plate in the sliding groove, and the distance between the fixed plate and the sliding plate can be changed, so that workpieces with different sizes can be fixed between the fixed plate and the sliding plate, and the workpieces with different sizes can be clamped conveniently.

(2) According to the utility model, the distance between the clamping plate and the processing table can be rapidly adjusted through the rapid clamping assembly, so that the workpiece clamping efficiency can be improved; the micro-speed clamping assembly can adjust the distance between the clamping plate and the machining table more slowly and accurately, so that the clamping force of the clamping plate on the workpiece can be adjusted more accurately.

(3) According to the clamping device, the clamping groove is formed in the bottom surface of the clamping plate, the quick-change pressing plate is detachably clamped in the clamping groove, and the quick-change pressing plate matched with a workpiece can be clamped in the clamping groove according to the characteristics of the size, the shape and the like of the workpiece, so that the workpiece can be clamped more tightly.

(4) When the sliding plate slides in the sliding groove, the adjusting protrusion on the bottom surface of the sliding plate can slide in the adjusting groove, so that the sliding plate can slide more stably, and a workpiece can be clamped more tightly.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view taken at A-A of FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view taken at B-B of FIG. 1 according to the present invention;

FIG. 4 is a schematic cross-sectional front view of the fast moving plate of the present invention;

FIG. 5 is a schematic front sectional view of a first guide plate according to the present invention;

FIG. 6 is a schematic front sectional view of a second guide plate according to the present invention;

FIG. 7 is a schematic front sectional view of the attachment of the clamp plate and the quick clamp plate of the present invention;

FIG. 8 is a schematic front view of the slide plate of the present invention;

reference numerals are as follows: the quick-change press plate comprises a base 1, a machining table 2, an adjusting groove 21, a sliding groove 22, a sliding plate 3, an adjusting protrusion 31, a clamping plate 4, a first guide plate 5, a first dovetail groove 51, a clamping screw 6, a quick-change moving plate 7, a first dovetail protrusion 71, a second dovetail protrusion 72, a rotating motor 8, a connecting block 9, a clamping nut 10, a rack 11, a spring 12, a top plate 13, a supporting plate 14, a second guide plate 15, a second dovetail groove 151, a gear 16, an adjusting screw 17, a fixing plate 18, an adjusting nut 19 and a quick-change press plate 20.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1-3, the present embodiment provides a fixture for electrical discharge machining, which includes a base 1, a machining table 2 is mounted on a top surface of the base 1, a fixing plate 18 is mounted on a top surface of the machining table 2, a sliding groove 22 is formed on the top surface of the machining table 2, a sliding plate 3 is disposed in the sliding groove 22, a supporting plate 14 is mounted on a side surface of the base 1, an adjusting nut 19 is mounted in the supporting plate 14, an adjusting screw 17 penetrating through the supporting plate 14 is mounted in the adjusting nut 19, the adjusting screw 17 is connected with the sliding plate 3 through a bearing, and a clamping mechanism located above the machining table 2 is mounted on the supporting plate 14.

The working principle is as follows: when the workpiece needs to be subjected to electric spark machining, the workpiece is placed in the sliding groove 22, then the adjusting screw 17 is rotated, because the adjusting nut 19 is in threaded connection with the adjusting screw 17, and the adjusting nut 19 is fixedly installed in the supporting plate 14, the adjusting screw 17 can be rotated to enable the adjusting screw 17 to move relative to the adjusting nut 19, the adjusting screw 17 drives the sliding plate 3 to move towards the direction of the fixed plate 18 or away from the fixed plate 18 in the sliding groove 22 until the sliding plate 3 is in contact with the side surface of the workpiece and tightly abuts against the workpiece, then the top surface of the workpiece is clamped by the clamping mechanism, and the workpiece can be machined by electric sparks, so that the distance between the fixed plate 18 and the sliding plate 3 can be changed, the size of the space enclosed by the fixed plate 18, the sliding plate 3 and the sliding groove 22 can be changed, and workpieces with different sizes can be fixed between the fixed plate 18 and the sliding plate 3, and further, workpieces with different sizes can be clamped conveniently.

Example 2

As shown in fig. 1 to 3, on the basis of the above embodiment 1, the present embodiment provides a preferable structure of the clamping mechanism as follows: the clamping mechanism comprises a rapid clamping assembly arranged along the height direction of the supporting plate 14, a rapid moving plate 7 is installed on the rapid clamping assembly, a connecting block 9 is installed on the rapid moving plate 7, a micro-speed clamping assembly is installed on the connecting block 9, and a clamping plate 4 is installed on the micro-speed clamping assembly.

In this embodiment: the distance between the clamping plate 4 and the processing table 2 can be rapidly adjusted through the rapid clamping assembly, so that the workpiece clamping efficiency can be improved; the micro-speed clamping assembly can adjust the distance between the clamping plate 4 and the processing table 2 more slowly and accurately, so that the clamping force of the clamping plate 4 on the workpiece can be adjusted more accurately.

Preferably, the micro-speed clamping assembly comprises a clamping nut 10 installed in the connecting block 9, a clamping screw 6 penetrating through the connecting block 9 and located in the vertical direction is installed in the clamping nut 10, and the lower end of the clamping screw 6 is connected with the clamping plate 4 through a bearing.

Example 3

As shown in fig. 1 to 3, on the basis of the

above embodiments

1 and 2, the present embodiment gives a preferred structure of the quick clamping assembly as follows: the rapid clamping assembly comprises a rack 11 which is installed on a supporting plate 14 and located in the vertical direction, a top plate 13 which is located in the horizontal direction is installed at the upper end of the supporting plate 14, a plurality of springs 12 are installed on the top plate 13, the lower end of each spring 12 is connected with the rapid moving plate 7, a through hole is formed in the rapid moving plate 7, a rotating motor 8 is installed on the rapid moving plate 7, a gear 16 which penetrates through the through hole and is meshed with the rack 11 is installed on a motor shaft of the rotating motor 8, and a guide unit which is installed on the supporting plate 14 is connected to the rapid moving plate 7.

In this embodiment: when the clamping plate 4 needs to move in the vertical direction quickly, the conventional rotating motor 8 can be powered on, the rotating motor 8 drives the gear 16 to rotate after being powered on, the gear 16 moves relative to the gear 16 and along the length direction of the rack 11 due to the fact that the gear 16 is meshed with the rack 11, and the gear 16 drives the quick moving plate 7, the clamping plate 4 and the like to move quickly in the vertical direction; when the fast moving plate 7 moves in the vertical direction, the spring 12 is compressed or extended, the spring 12 can connect the fast moving plate 7 and the top plate 13, so that the fast moving plate 7 does not fall off, when the fast moving plate 7 moves in the vertical direction, the spring can move along the guide unit, and the guide unit can guide the fast moving plate 7 and prevent the gear 16 from separating from the rack 11.

Preferably, the guide unit includes a first guide plate 5 and a second guide plate 15 which are installed on two sides of the rack 11 and are parallel to the rack 11, the fast moving plate 7 is connected with the first guide plate 5 and the second guide plate 15 in a sliding manner, a first dovetail groove 51 is formed in the side surface of the first guide plate 5, a second dovetail groove 151 is formed in the side surface of the second guide plate 15, a first dovetail protrusion 71 and a second dovetail protrusion 72 are integrally formed on the fast moving plate 7, the first dovetail protrusion 71 is located in the first dovetail groove 51, and the second dovetail protrusion 72 is located in the second dovetail groove 151. When the quick moving plate 7 moves in the vertical direction, the first dovetail protrusion 71 moves in the first dovetail groove 51, and the second dovetail protrusion 72 moves in the second dovetail groove 151, so that the quick moving plate 7 can move in the vertical direction more smoothly, and the quick moving plate 7 is not easily separated from the first guide plate 5 and the second guide plate 15.

Example 4

As shown in fig. 1 to 8, on the basis of the above embodiment 1, the present embodiment provides a preferable structure that can more easily clamp different workpieces, which is: the bottom surface of the clamping plate 4 is provided with a clamping groove, and a quick-change pressing plate 20 is detachably clamped in the clamping groove.

In this embodiment: the quick-change pressing plate 20 matched with the workpiece can be clamped in the clamping groove according to the characteristics of the size, the shape and the like of the workpiece, so that the workpiece can be clamped more tightly.

Preferably, the top surface of the processing table 2 is provided with an adjusting groove 21, the bottom surface of the sliding plate 3 is integrally formed with an adjusting protrusion 31, and the adjusting protrusion 31 is located in the adjusting groove 21. When the sliding plate 3 slides in the sliding groove 22, the adjustment protrusions 31 on the bottom surface of the sliding plate 3 slide in the adjustment grooves 21, which makes the sliding plate 3 slide more stably, thereby clamping the workpiece more tightly.

Claims

1. The utility model provides a anchor clamps for electric discharge machining, includes base (1), processing platform (2), its characterized in that are installed to the top surface of base (1): the top surface of processing platform (2) is installed fixed plate (18), the top surface of processing platform (2) is opened there is sliding tray (22), be equipped with sliding plate (3) in sliding tray (22), the side-mounting of base (1) has backup pad (14), install adjusting nut (19) in backup pad (14), install adjusting screw (17) that pass backup pad (14) in adjusting nut (19), be connected through the bearing between adjusting screw (17) and sliding plate (3), install the clamping mechanism who is located processing platform (2) top on backup pad (14).

2. A jig for electric discharge machining according to claim 1, characterized in that: clamping mechanism includes the quick-witted tight subassembly of quick-witted tight of the quick-witted tight subassembly that sets up along backup pad (14) direction of height, install quick-action movable plate (7) on the quick-action movable plate (7), install connecting block (9) on quick-action movable plate (7), install the tight subassembly of fast clamp a little on connecting block (9), install clamp plate (4) on the tight subassembly of fast clamp a little.

3. A jig for electric discharge machining according to claim 2, wherein: the quick clamping assembly is including installing rack (11) in backup pad (14) and being located vertical direction, roof (13) that are located the horizontal direction are installed to the upper end of backup pad (14), install a plurality of springs (12) on roof (13), the lower extreme and the quick-action movable plate (7) of spring (12) are connected, it has the through-hole to open on quick-action movable plate (7), install rotating electrical machines (8) on quick-action movable plate (7), install on the motor shaft of rotating electrical machines (8) and pass the through-hole and with rack (11) meshed gear (16), be connected with the guide unit of installing in backup pad (14) on quick-action movable plate (7).

4. A jig for electric discharge machining according to claim 3, characterized in that: the guide unit comprises a first guide plate (5) and a second guide plate (15) which are arranged on two sides of a rack (11) and are parallel to the rack (11), and the quick moving plate (7) is connected with the first guide plate (5) and the second guide plate (15) in a sliding mode.

5. A jig for electric discharge machining according to claim 4, characterized in that: first dovetail groove (51) are opened to the side of first deflector (5), and second dovetail groove (151) are opened to the side of second deflector (15), integrated into one piece has first forked tail arch (71) and second forked tail arch (72) on fast moving plate (7), first forked tail arch (71) are located first dovetail groove (51), and second forked tail arch (72) are located second dovetail groove (151).

6. A jig for electric discharge machining according to claim 2, characterized in that: the micro-speed clamping assembly comprises a clamping nut (10) installed in a connecting block (9), a clamping screw (6) which penetrates through the connecting block (9) and is located in the vertical direction is installed in the clamping nut (10), and the lower end of the clamping screw (6) is connected with a clamping plate (4) through a bearing.

7. A jig for electric discharge machining according to claim 6, characterized in that: the bottom surface of the clamping plate (4) is provided with a clamping groove, and a quick-change pressing plate (20) is detachably clamped in the clamping groove.

8. A jig for electric discharge machining according to any one of claims 1 to 7, characterized in that: the top surface of the processing table (2) is provided with an adjusting groove (21), the bottom surface of the sliding plate (3) is integrally formed with an adjusting protrusion (31), and the adjusting protrusion (31) is positioned in the adjusting groove (21).