Linear cutting clamping tool

Abstract

The utility model relates to the technical field of clamping tools, in particular to a linear cutting clamping tool which comprises a clamping frame, a first clamping plate, a locking unit, a second clamping plate, a pressing unit and a driving unit, a plurality of limiting grooves are formed in the clamping frame at intervals, and the clamping frame can be used for placing a plurality of linear workpieces through the limiting grooves formed at intervals. The first clamping plate is opposite to the limiting grooves, the locking unit can enable the first clamping plate and the clamping frame to clamp the linear workpieces by locking the first clamping plate, the second clamping plate is opposite to the limiting grooves and located on one side of the first clamping plate, and the driving unit drives the pressing unit to press the linear workpieces. The pressing unit drives the second clamping plate to clamp the linear workpieces at the other ends of the linear workpieces, under common clamping of the first clamping plate and the second clamping plate, stability of the linear workpieces is achieved, the clamping efficiency of the linear workpieces is improved, and the cutting efficiency of the linear workpieces is improved.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixture technology, and in particular to a wire cutting clamping fixture. Background Technology

[0002] Wire EDM machines utilize the principle of electrical discharge machining, using a linear workpiece [1] and a molybdenum wire for cutting as two electrodes with different polarities. After the molybdenum wire passes through the workpiece, it is driven by a displacement mechanism to move the workpiece along a set trajectory. The material is eroded by the discharge between the electrodes to perform cutting. Due to its high processing accuracy, it is widely used in the mold processing field.

[0003] During wire cutting, linear workpieces need to be clamped using clamping fixtures. For example, patent document CN219026216U discloses a clamping and fixing structure for wire cutting equipment, including a support plate with a forward and reverse motor mounted on it. The output ends of the motors are fixedly connected to forward and reverse drive screws. Adjusting seats are slidably connected to the support plate, and two adjusting seats are fixedly inlaid with threaded rings. The inner rings of both threaded rings are threadedly connected to the outer surface of the forward and reverse drive screws. Clamping seats are fixedly connected to the upper surfaces of both adjusting seats. This clamping and fixing structure allows for adjustment of the positions of the two clamping seats, facilitating the clamping and fixing of workpieces of different specifications.

[0004] Existing clamping fixtures can only clamp single linear workpieces, resulting in low clamping efficiency and causing inconvenience for wire cutting of the workpieces. Utility Model Content

[0005] In view of this, it is necessary to provide a wire EDM clamping fixture to solve the technical problem that the clamping efficiency of existing wire EDM clamping fixtures is low and causes inconvenience to wire EDM of workpieces.

[0006] To achieve the above technical objectives, the present invention provides a wire EDM clamping fixture, comprising:

[0007] The clamping frame has several limiting grooves spaced apart along the height direction, the limiting grooves being used to mount the workpiece to be cut;

[0008] The first clamping plate is opposite to each of the aforementioned limiting grooves;

[0009] A locking unit is connected to the first clamping plate and the clamping frame, for clamping the workpiece between the first clamping plate and the clamping frame;

[0010] The second clamping plate is opposite to each of the limiting grooves and located on one side of the first clamping plate; the pressing unit is located on the side of the second clamping plate away from the clamping frame;

[0011] A driving unit, connected to the pressing unit, is used to drive the pressing unit to press the second clamping plate.

[0012] Furthermore, the pressing unit includes two pressing frames, which are arranged opposite to each other and are both hinged to the clamping frame. The driving unit is used to drive the two pressing frames to rotate so that the two pressing frames press the second clamping plate.

[0013] Furthermore, an arc-shaped pressing surface is provided on the side of the two pressing frames opposite to each other, near the second clamping plate. The arc-shaped pressing surface is used to press the second clamping plate by rotating the pressing frame.

[0014] Furthermore, the drive unit includes a drive module and a pusher. The pusher is located between the two pressing frames and is slidably connected to the clamping frame. The drive module is mounted on the clamping frame and connected to the pusher, and is used to drive the pusher to slide so that the pusher drives the two pressing frames to rotate.

[0015] Furthermore, the drive module includes a cylinder.

[0016] Furthermore, the pusher includes a slide rod and a drive disk. The slide rod is slidably connected to the clamping frame, and the drive disk is fixed to the slide rod. The drive disk can drive the two pressing frames to rotate by sliding the slide rod toward the two pressing frames.

[0017] Furthermore, an arc-shaped contact surface is provided on the side of the two pressing brackets facing each other, near the drive plate. The drive plate can abut against the arc-shaped contact surface by sliding the slide rod toward the two pressing brackets.

[0018] Furthermore, the wire EDM clamping fixture also includes a feeder frame, one end of which is fixed to the clamping frame, and the other end of which extends toward the second clamping plate to the side of the second clamping plate opposite to the clamping frame. The two pressing frames are hinged to the end of the feeder frame opposite to the clamping frame.

[0019] Furthermore, the feed frame includes a rotating shaft and two connecting frames. One end of each of the two connecting frames is fixed to the clamping frame, and the other end of each of the two connecting frames extends from both sides of the second clamping plate to the side of the second clamping plate opposite to the clamping frame. The rotating shaft is rotatably connected to the two connecting frames, and the pressing frame is fixed to the rotating shaft.

[0020] Furthermore, the locking unit includes a plurality of locking bolts, each of which is spaced apart along the height direction of the clamping frame, and each of which passes through the first clamping plate and is threadedly connected to the clamping frame.

[0021] Compared with the prior art, the beneficial effects of the wire EDM clamping fixture of this utility model include: by setting a clamping frame, a first clamping plate, a locking unit, a second clamping plate, a pressing unit, and a driving unit, the clamping frame is provided with a number of limiting grooves at intervals along the height direction. The clamping frame can simultaneously accommodate multiple linear workpieces through the limiting grooves at intervals. The first clamping plate is opposite to each limiting groove. The locking unit passes through the first clamping plate and is connected to the clamping frame. By locking the first clamping plate, the locking unit can drive each linear workpiece to clamp at one end of each linear workpiece. The workpiece is clamped, with the second clamping plate opposite to each limiting groove and located on one side of the first clamping plate. The pressing unit is located on the side of the second clamping plate away from the clamping frame. The driving unit is connected to the pressing unit. The driving unit can drive the pressing unit to make the pressing unit drive the second clamping plate to clamp each linear workpiece at the other end of each linear workpiece. Under the joint clamping of the first clamping plate and the second clamping plate, the linear workpiece is stabilized, improving the clamping efficiency of the linear workpiece. The linear workpiece can also be cut simultaneously by the cutting equipment, improving the cutting efficiency of the linear workpiece. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the wire cutting clamping fixture provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of one of the workpiece placement racks of the wire EDM clamping fixture provided in this embodiment of the utility model.

[0024] The following are the labeling elements in the figure:

[0025] 10—Clamping frame 11—Limiting groove 12—Base

[0026] 13—Workpiece placement rack; 20—First clamping plate; 30—Locking unit

[0027] 31—Locking bolt; 40—Second clamping plate; 50—Pressing unit

[0028] 51—Pressing frame; 60—Drive unit; 61—Drive module

[0029] 62—Push Frame; 70—Supply and Transfer Frame; 71—Connecting Frame

[0030] 72—Rotating shaft; 511—Arc-shaped pressing surface; 512—Arc-shaped contact surface

[0031] 611—Hydraulic cylinder; 621—Slide rod; 622—Drive disc

[0032] 10a—Linear workpiece. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0034] This utility model provides a wire EDM clamping fixture. When cutting linear workpieces 10a such as pipes, the wire EDM clamping fixture improves the clamping efficiency of linear workpieces 10a by simultaneously fixing multiple linear workpieces 10a, thus solving the technical problem that the clamping efficiency of existing wire EDM clamping fixtures is low and causes inconvenience to wire cutting of workpieces.

[0035] The wire EDM clamping fixture provided in this embodiment includes a clamping frame 10, a first clamping plate 20, a locking unit 30, a second clamping plate 40, a pressing unit 50, and a driving unit 60. The clamping frame 10 is provided with a plurality of limiting grooves 11 spaced apart along the height direction, and the limiting grooves 11 are for mounting the workpiece to be cut. The first clamping plate 20 is opposite to each limiting groove 11. The locking unit 30 passes through the first clamping plate 20 and is connected to the clamping frame 10, and is used to clamp the workpiece by locking the first clamping plate 20. The second clamping plate 40 is opposite to each limiting groove 11 and is located on one side of the first clamping plate 20. The pressing unit 50 is located on the side of the second clamping plate 40 away from the clamping frame 10. The driving unit 60 is connected to the pressing unit 50 and is used to drive the pressing unit 50 to press the second clamping plate 40.

[0036] Specifically, the wire EDM clamping fixture comprises a clamping frame 10, a first clamping plate 20, a locking unit 30, a second clamping plate 40, a pressing unit 50, and a driving unit 60. The clamping frame 10 has several limiting grooves 11 spaced apart along its height. Multiple linear workpieces 10a can be placed simultaneously through these spaced-apart limiting grooves 11. The first clamping plate 20 is opposite to each limiting groove 11. The locking unit 30 passes through the first clamping plate 20 and is connected to the clamping frame 10. By locking the first clamping plate 20, the locking unit 30 can drive the first clamping plate 20 to clamp each linear workpiece 10a at one end. The second clamping plate 40... The 0 is opposite to each limiting groove 11 and located on one side of the first clamping plate 20. The pressing unit 50 is located on the side of the second clamping plate 40 away from the clamping frame 10. The driving unit 60 is connected to the pressing unit 50. The driving unit 60 can drive the pressing unit 50 to drive the second clamping plate 40 to clamp each linear workpiece 10a at the other end of each linear workpiece 10a. Under the joint clamping of the first clamping plate 20 and the second clamping plate 40, the linear workpiece 10a is stabilized, the clamping efficiency of the linear workpiece 10a is improved, and each linear workpiece 10a can be cut simultaneously by the cutting equipment, thereby improving the cutting efficiency of the linear workpiece 10a.

[0037] Understandably, the clamping frame 10 can be any frame structure capable of fixing multiple linear workpieces 10a at intervals in the vertical direction.

[0038] In one embodiment, the clamping frame 10 includes a base 12 and two workpiece placement racks 13. The two workpiece placement racks 13 are arranged opposite to each other and slidably connected to the base 12. The two placement racks can be used to place the two ends of the linear workpiece 10a respectively. The two workpiece placement racks 13 can be adapted to the installation of workpieces of different lengths by sliding along the base 12.

[0039] In this embodiment, the first clamping plate 20 is opposite to one of the workpiece placement racks 13. By moving toward the workpiece placement rack 13, the first clamping plate 20 can clamp one end of the linear workpiece 10a on the workpiece placement rack 13.

[0040] In one embodiment, the locking unit 30 includes a plurality of locking bolts 31, which are spaced apart along the height direction of the clamping frame 10. Each locking bolt 31 passes through the first clamping plate 20 and is threadedly connected to the clamping frame 10. Specifically, after the two ends of each limiting workpiece are respectively mounted on the two workpiece placement frames 13 through the limiting grooves 11, the locking bolts 31 can be tightened. During the tightening process, the first clamping plate 20 will move toward the workpiece placement frame 13 and press the linear workpiece 10a, thereby locking that end of the linear workpiece 10a.

[0041] In this embodiment, there are three locking bolts 31. When tightening the locking bolts 31, first tighten the locking bolt 31 in the middle part, and then tighten the locking bolts 31 on the upper and lower sides.

[0042] In this embodiment, the second clamping plate 40 is opposite to another workpiece placement rack 13. The workpiece placement rack 13 is provided with a plurality of sliding shafts, and each sliding shaft passes through the second clamping plate 40. The second clamping plate 40 can clamp the other end of the linear workpiece 10a on the workpiece placement rack 13 by sliding the sliding shafts toward the workpiece placement rack 13. Under the joint clamping of the two ends of the linear workpiece 10a by the first clamping plate 20 and the second clamping plate 40, the linear workpiece 10a is stabilized.

[0043] Understandably, the pressing unit 50 can be any structure, such as a pressure block, that can press the second clamping plate 40.

[0044] In one embodiment, the pressing unit 50 includes two pressing frames 51, which are arranged opposite to each other and hinged to the clamping frame 10. The driving unit 60 is used to drive the two pressing frames 51 to rotate so that the two pressing frames 51 press the second clamping plate 40. Specifically, after one end of the linear workpiece 10a is clamped by the first clamping plate 20, the driving unit 60 drives the two pressing frames 51 simultaneously and causes them to rotate. By rotating, one end of the two pressing frames 51 abuts against the second clamping plate 40, thereby causing the second clamping plate 40 to move toward the linear workpiece 10a, pressing the linear workpiece 10a, and finally locking the linear workpiece 10a.

[0045] In this embodiment, to achieve the hinge connection between the pressing frame 51 and the clamping frame 10, and to enable the pressing frame 51 to press the second clamping plate 40 by rotation, the wire EDM clamping fixture also includes a feed frame 70. One end of the feed frame 70 is fixed to the clamping frame 10, and the other end of the feed frame 70 extends towards the second clamping plate 40 to one side of the clamping frame 10 opposite to the second clamping plate 40. The two pressing frames 51 are hinged to one end of the clamping frame 10 opposite to the feed frame 70. Specifically, by hinged to one end of the clamping frame 10 opposite to the feed frame 70, the pressing frame 51 can be located on one side of the clamping frame 10 opposite to the second clamping plate 40. Therefore, the pressing frame 51 can press the second clamping plate 40 towards the clamping frame 10 by rotation, so that the second clamping plate 40 locks the linear workpiece 10a.

[0046] In this embodiment, two transfer frames 70 are provided, and the two transfer frames 70 are respectively hinged to the two pressing frames 51.

[0047] In one embodiment, the feed frame 70 includes two connecting frames 71 and a rotating shaft 72. One end of each connecting frame 71 is fixed to the clamping frame 10, and the other end of each connecting frame 71 extends from both sides of the second clamping plate 40 to the side of the clamping frame 10 opposite to the second clamping plate 40. The rotating shaft 72 is rotatably connected to the two connecting frames 71, and the pressing frame 51 is fixed to the rotating shaft 72. Specifically, the pressing frame 51 can be hinged to the feed frame 70 through the rotating shaft 72. The two connecting frames 71, located on both sides of the second clamping plate 40, can limit the position of the second clamping plate 40, thereby improving the stability of the second clamping plate 40 and enabling the second clamping plate 40 to stably clamp the linear workpiece 10a.

[0048] In one embodiment, an arc-shaped pressing surface 511 is provided on the side of the two pressing frames 51 facing away from each other, near the second clamping plate 40. The arc-shaped pressing surface 511 is used to press the second clamping plate 40 by rotating the pressing frame 51. Specifically, during the rotation of the pressing frame 51, the second clamping plate 40 can be pressed by the arc-shaped pressing surface 511. The arc shape of the pressing part can protect the pressing frame 51 and the second clamping plate 40, preventing scratches to the second clamping plate 40 during the pressing process.

[0049] Understandably, the drive unit 60 can be a drive component that is hinged to the two pressing brackets 51 respectively via the drive end.

[0050] In one embodiment, the drive unit 60 includes a drive module 61 and a pusher 62. The pusher 62 is located between the two pressing frames 51 and is slidably connected to the clamping frame 10. The drive module 61 is mounted on the clamping frame 10 and connected to the pusher 62, and is used to drive the pusher 62 to slide, so that the pusher 62 drives the two pressing frames 51 to rotate. Specifically, the drive module 61 drives the pusher 62 to move toward the two pressing frames 51, thereby abutting against the end of the two pressing frames 51 that is close to each other. By driving this end, the drive module 61 drives the two pressing frames 51 to rotate simultaneously, ultimately causing the two pressing frames 51 to press against the second clamping plate 40.

[0051] Understandably, the drive module 61 can be any drive device, such as a hydraulic cylinder 611 or a motor screw module, to move the pusher 62.

[0052] Understandably, the pusher 62 can also be hinged at one end close to the two pressing brackets 51.

[0053] In one embodiment, the drive module 61 includes a cylinder. Specifically, the cylinder can drive the pressing frame 51 by linearly driving the pusher 62.

[0054] In one embodiment, the pusher 62 includes a slide rod 621 and a drive disk 622. The slide rod 621 is slidably connected to the clamping frame 10, and the drive disk 622 is fixed to the slide rod 621. The drive disk 622 can drive the two pressing frames 51 to rotate by sliding the slide rod 621 toward the two pressing frames 51. Specifically, the slide rod 621 enables the slide connection between the pusher 62 and the clamping frame 10, and the drive disk 622 drives both pressing frames 51 simultaneously by abutting and driving the pusher 621 at the end closest to it.

[0055] In one embodiment, an arc-shaped abutment surface 512 is provided on the side of the two pressing brackets 51 facing each other, near the drive disc 622. The drive disc 622 can slide towards the two pressing brackets 51 via the slide rod 621 and abut against the arc-shaped abutment surface 512. Specifically, during the driving process of the pressing brackets 51, the pusher 62 can drive the pressing brackets 51 through the arc-shaped abutment surface 512. The arc-shaped arrangement of the driving part can protect the pressing brackets 51 and the pusher 62, preventing scratches to the pusher 62 and the pressing brackets 51 during the driving process.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire EDM clamping fixture, characterized in that, include: The clamping frame has several limiting grooves spaced apart along the height direction, the limiting grooves being used to mount the workpiece to be cut; The first clamping plate is opposite to each of the aforementioned limiting grooves; A locking unit, connected to the first clamping plate and the clamping frame, is used to drive the first clamping plate and the clamping frame to clamp the workpiece; The second clamping plate is opposite to each of the limiting grooves and is located on one side of the first clamping plate; The pressing unit is located on the side of the second clamping plate away from the clamping frame; and A driving unit, connected to the pressing unit, is used to drive the pressing unit to press the second clamping plate.

2. The wire EDM clamping fixture according to claim 1, characterized in that, The pressing unit includes two pressing frames, which are arranged opposite to each other and are both hinged to the clamping frame. The driving unit is used to drive the two pressing frames to rotate so that the two pressing frames press the second clamping plate.

3. The wire EDM clamping fixture according to claim 2, characterized in that, An arc-shaped pressing surface is provided on the side of the two pressing frames facing away from each other, near the second clamping plate. The arc-shaped pressing surface is used to press the second clamping plate by rotating the pressing frame.

4. The wire EDM clamping fixture according to claim 2, characterized in that, The drive unit includes a drive module and a pusher. The pusher is located between the two pressing frames and is slidably connected to the clamping frame. The drive module is installed on the clamping frame and connected to the pusher, and is used to drive the pusher to slide so that the pusher drives the two pressing frames to rotate.

5. The wire EDM clamping fixture according to claim 4, characterized in that, The drive module includes a cylinder.

6. The wire EDM clamping fixture according to claim 4, characterized in that, The pusher includes a slide rod and a drive disk. The slide rod is slidably connected to the clamping frame, and the drive disk is fixed to the slide rod. The drive disk can drive the two pressing frames to rotate by sliding the slide rod toward the two pressing frames.

7. The wire EDM clamping fixture according to claim 6, characterized in that, The two pressing brackets have an arc-shaped contact surface on one side near the drive plate at their opposite ends. The drive plate can abut against the arc-shaped contact surface by sliding the slide rod toward the two pressing brackets.

8. The wire EDM clamping fixture according to claim 2, characterized in that, The wire EDM clamping fixture also includes a feed frame, one end of which is fixed to the clamping frame, and the other end of which extends toward the second clamping plate to the side of the second clamping plate opposite to the clamping frame. Two pressing frames are hinged to the end of the feed frame opposite to the clamping frame.

9. The wire EDM clamping fixture according to claim 8, characterized in that, The feed frame includes a rotating shaft and two connecting frames. One end of each of the two connecting frames is fixed to the clamping frame, and the other end of each of the two connecting frames extends from both sides of the second clamping plate to the side of the second clamping plate opposite to the clamping frame. The rotating shaft is rotatably connected to the two connecting frames, and the pressing frame is fixed to the rotating shaft.

10. The wire EDM clamping fixture according to any one of claims 1-9, characterized in that, The locking unit includes a plurality of locking bolts, each of which is spaced apart along the height direction of the clamping frame, and each of which passes through the first clamping plate and is threadedly connected to the clamping frame.

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