A clamping tool for processing cemented carbide plate

By introducing a plate placement slot, an L-shaped electric slide rail, and a suction cup positioning mechanism into the alloy plate clamping device, the problems of manual feeding and plate movement are solved, realizing automated plate positioning and lateral movement, and improving processing efficiency.

CN119794841BActive Publication Date: 2026-07-03MUDANJIANG BEIFANG ALLOY TOOLS LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MUDANJIANG BEIFANG ALLOY TOOLS LTD
Filing Date
2025-01-08
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing alloy sheet clamping devices require manual feeding and cannot move the clamped sheet, making it difficult for subsequent processing equipment to process different positions of the sheet laterally.

Method used

The system utilizes a plate placement slot on one side of the mounting platform and an L-shaped electric slide rail, combined with an electric slider and a hydraulic rod-driven suction cup positioning mechanism. Automatic positioning and lateral movement of the plate are achieved through vacuum adsorption and the insertion of a rotating column drive rod.

Benefits of technology

It enables automatic feeding and lateral movement of alloy plates, simplifies the processing flow, and improves the processing efficiency of the equipment for handling different positions of the plates.

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Abstract

The application discloses a clamping tool for hard alloy plate machining, one side of the mounting table is provided with a plate placing groove, an L-shaped electric sliding rail is mounted above the mounting table and the plate placing groove, an electric sliding block matched with the L-shaped electric sliding rail is mounted in the L-shaped electric sliding rail, the electric sliding block is connected with a hydraulic rod through a connecting block, the hydraulic rod can drive a suction disc positioning mechanism to perform lifting operation, a positioning plate matched with the suction disc positioning mechanism is slidably arranged above the mounting table, and a clamping plate mechanism is mounted on the top of the positioning plate; the suction disc positioning mechanism comprises a first mounting plate, two groups of first connecting pieces are arranged on the bottom of the first mounting plate, and a first rotating column is rotatably arranged between the first connecting pieces. The clamping tool for hard alloy plate machining solves the problems that the existing alloy plate clamping device needs manual feeding and cannot move the clamped plate, and the plate placing groove is arranged on one side of the mounting table.
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Description

Technical Field

[0001] This invention relates to the field of alloy plate processing technology, specifically to a clamping fixture for processing cemented carbide plates. Background Technology

[0002] Hard alloy sheet is an alloy material made from a hard compound of refractory metal and a binder metal through powder metallurgy. Its main components include tungsten-cobalt alloy (WC and Co), and the content of WC and Co in hard alloy sheets varies depending on the application.

[0003] A search revealed that existing technology, such as the announcement number CN216326660U, describes a positioning and clamping device for aluminum alloy sheets. This device includes a support frame with a bidirectional screw mounted on it. A drive assembly is mounted at one end of the bidirectional screw, and sliding plates are connected to both ends of the screw. A clamping frame is mounted on the sliding plates, and a groove is provided at the bottom of the clamping frame. A first clamping component is mounted on the groove. The first clamping component includes a connecting rod with a slider and a spring. The slider is connected to the clamping block via a connecting block. A notch is provided on the clamping frame, and a second clamping component is mounted on the notch. The second clamping component includes a rotating shaft rotatably connected to the notch, a connecting post mounted on the rotating shaft, and a torsion spring between the connecting post and the rotating shaft. A rotating plate is mounted at the bottom of the connecting post, and the bottom of the rotating plate is inclined. This invention can effectively and conveniently perform dual positioning and clamping of aluminum alloy sheets, thus facilitating the use of the device.

[0004] In summary, existing alloy sheet clamping devices facilitate dual positioning and clamping of alloy sheets, but they require manual loading and cannot move the clamped sheet to facilitate subsequent processing equipment to process different positions of the sheet laterally. Therefore, a clamping fixture for processing cemented carbide sheets is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping fixture for processing cemented carbide plates, so as to solve the problem mentioned in the background art that the existing alloy plate clamping devices require manual feeding and cannot move the clamped plate, thereby facilitating the subsequent processing equipment to process different positions of the plate laterally.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clamping fixture for processing cemented carbide plates, comprising a mounting platform, a plate placement groove on one side of the mounting platform, and an L-shaped electric slide rail mounted above the mounting platform and the plate placement groove. An electric slider for use with the L-shaped electric slide rail is installed inside the slide rail, and the electric slider is connected to a hydraulic rod via a connecting block. The hydraulic rod can drive a suction cup positioning mechanism to perform lifting operations. A positioning plate for use with the suction cup positioning mechanism is slidably disposed above the mounting platform, and a clamping plate mechanism is mounted on the top of the positioning plate. The suction cup positioning mechanism includes a first mounting plate, and two sets of first connecting members are disposed at the bottom of the first mounting plate. A first rotating column is rotatably disposed between the first connecting members, and the outer side of the first rotating column is connected to the top of a second mounting plate. The first mounting plate is connected to the first mounting block. The bottom of the first mounting plate is provided with two sets of second connecting parts, and a second rotating column is rotatably arranged between the second connecting parts. One end of the second rotating column is connected to the first drive motor arranged on the outside of the second connecting part, and the outside of the second rotating column is movably connected to the second mounting block arranged on the top of the second mounting plate through a V-shaped telescopic connecting arm. A side plate is provided on one side of the second mounting plate. Two sets of drive rods are installed on the outside of the side plate, and abutments are provided on the inside of the two sets of drive rods. Two sets of drive rod inserts that cooperate with the drive rods are fixedly arranged on the top of the positioning plate. A vacuum tube is provided inside the second mounting plate, and the vacuum tube is connected to a vacuum suction cup arranged at the bottom of the second mounting plate. One end of the vacuum tube is connected to a vacuum pump arranged on the top of the outside of the second mounting plate through a suction pipe.

[0007] Preferably, the output end of the first drive motor is equipped with an anti-rotation device.

[0008] The above technical solution helps prevent the output end of the drive motor from rotating on its own.

[0009] Preferably, the height of the drive rod is greater than that of the stop block.

[0010] The above technical solution facilitates later-stage driving.

[0011] Preferably, the vacuum tube is connected to the exhaust pipe, one end of the exhaust pipe extends to the outside of the second mounting plate, and a matching electric valve is installed inside the exhaust pipe.

[0012] The above technical solution facilitates gas entry.

[0013] Preferably, the drive rod insert includes an open cylinder, and the bottom of the open cylinder is fixedly connected to the top of the positioning plate. A movable plate is provided inside the open cylinder, and the bottom of the movable plate is connected to the bottom of the inner side of the open cylinder by symmetrically arranged springs.

[0014] The above technical solution facilitates the insertion of the drive rod for driving.

[0015] Preferably, the movable plate is slidably connected to the inside of the open cylinder.

[0016] The above technical solution facilitates the movement of the mobile board.

[0017] Preferably, the clamping plate mechanism includes a second drive motor, which is mounted on the outside of the positioning plate. The positioning plate has an installation groove inside, and a gear is provided inside the installation groove. The second drive motor can drive the gear to rotate, and the gear meshes with two sets of rack plates. One end of the rack plate is fixedly connected to the first slider, and the first slider is connected to the second slider through a connecting rod. The top of the second slider is connected to the clamping plate slidably mounted on the top of the positioning plate through a connecting rod, and the positioning plate has a movable through groove that cooperates with the connecting rod.

[0018] The above technical solution facilitates the clamping of the sheet material.

[0019] Preferably, a first lateral limiting slide bar is symmetrically arranged inside the mounting groove, and the first lateral limiting slide bar is slidably connected to the first slider.

[0020] The above technical solution facilitates the improvement of the stability of the first slider's movement.

[0021] Preferably, the second slider moves within the moving groove of the positioning plate, and the second slider is slidably connected to the second lateral limiting slide rod symmetrically arranged within the moving groove.

[0022] The above technical solution facilitates the improvement of the stability of the second slider's movement.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: This clamping fixture for processing cemented carbide plates solves the problem that existing alloy plate clamping devices require manual loading and cannot move the clamped plate, thus facilitating subsequent processing equipment to process different positions of the plate laterally. It solves this problem by providing a plate placement groove on one side of the mounting platform, and installing an L-shaped electric slide rail above the mounting platform and the plate placement groove. An electric slider is installed inside the L-shaped electric slide rail for use with it, and the electric slider is connected to a hydraulic rod via a connecting block. The hydraulic rod can drive the suction cup positioning mechanism to move up and down. In operation, a positioning plate that works with a suction cup positioning mechanism is slidably mounted above the mounting platform, and a clamping plate mechanism is mounted on the top of the positioning plate. The suction cup positioning mechanism includes a first mounting plate, and two sets of first connecting members are provided at the bottom of the first mounting plate. A first rotating column is rotatably mounted between the first connecting members, and the outer side of the first rotating column is connected to a first mounting block provided at the top of a second mounting plate. Two sets of second connecting members are provided at the bottom of the first mounting plate, and a second rotating column is rotatably mounted between the second connecting members. One end of the second rotating column is connected to a first drive motor provided on the outer side of the second connecting member, and the outer side of the second rotating column is connected by a V-shaped extension. The retractable connecting arm is movably connected to the second mounting block located on the top of the second mounting plate. A side plate is located on one side of the second mounting plate, and two sets of drive rods are mounted on the outer side of the side plate. A stop block is located on the inner side of each set of drive rods. Two sets of drive rod inserts that cooperate with the drive rods are fixedly located on the top of the positioning plate. A vacuum tube is located inside the second mounting plate and is connected to a vacuum suction cup located at the bottom of the second mounting plate. One end of the vacuum tube is connected to a vacuum pump located on the top outer side of the second mounting plate via a suction pipe. In use, under the action of the L-shaped electric slide rail and the electric slider, the suction cup positioning mechanism moves to directly above the plate placement slot. The hydraulic rod... The suction cup positioning mechanism descends to adsorb the board inside the board placement slot, and then moves it above the positioning plate via the L-shaped electric slide rail and electric slider. After the board above the positioning plate is clamped, the first drive motor in the suction cup positioning mechanism is activated. Under the action of the first drive motor, the second mounting plate rotates 90 degrees, so that the drive rod is vertically positioned above the drive rod insert. At this time, the hydraulic rod is activated to insert the drive rod into the drive rod insert, and the abutment does not contact the top of the board. Then, the positioning plate and the board clamped above the positioning plate can be moved laterally via the L-shaped electric slide rail and electric slider. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the positional relationship between the positioning plate and the suction cup positioning mechanism of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall top cross-sectional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the suction cup positioning mechanism of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle;

[0028] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0029] Figure 6 This is a top view of the positioning plate structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the clamping plate mechanism of the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged structural diagram of point C;

[0032] Figure 9 For the present invention Figure 7 Enlarged structural diagram of point D.

[0033] In the diagram: 1. Mounting platform; 2. Sheet placement slot; 3. L-shaped electric slide rail; 301. Electric slider; 302. Connecting block; 303. Hydraulic rod; 4. Suction cup positioning mechanism; 401. First mounting plate; 402. First connecting piece; 403. Second mounting plate; 4031. Vacuum tube; 4032. Vacuum suction cup; 4033. Vacuum pump; 4034. Exhaust pipe; 404. First mounting block; 405. Second connecting piece; 406. First drive motor; 407. V-shaped telescopic connection 408. Arm; 5. Second mounting block; 6. Positioning plate; 7. Clamping plate mechanism; 8. Second drive motor; 9. Gear; 10. Rack plate; 11. First slider; 2. Linking rod; 2. Second slider; 3. Connecting rod; 401. Clamping plate mechanism; 5. Side plate; 602. Drive rod; 703. Abutment; 8. Drive rod insert; 9. Open cylinder; 10. Moving plate; 11. Spring; 22. First lateral limiting slide bar; 33. Second lateral limiting slide bar. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figure 1-9The present invention provides a technical solution: a clamping fixture for processing cemented carbide plates, wherein a plate placement groove 2 is provided on one side of the mounting table 1, and an L-shaped electric slide rail 3 is installed above the mounting table 1 and the plate placement groove 2. An electric slider 301 is installed inside the L-shaped electric slide rail 3 for use therewith, and the electric slider 301 is connected to a hydraulic rod 303 through a connecting block 302. The hydraulic rod 303 can drive a suction cup positioning mechanism 4 to perform lifting and lowering operations. A positioning plate 5 for use with the suction cup positioning mechanism 4 is slidably arranged above the mounting table 1, and a clamping plate mechanism 6 is installed on the top of the positioning plate 5.

[0036] Specifically, the suction cup positioning mechanism 4 includes a first mounting plate 401, and two sets of first connecting members 402 are provided at the bottom of the first mounting plate 401. A first rotating column is rotatably arranged between the first connecting members 402, and the outer side of the first rotating column is connected to a first mounting block 404 provided at the top of the second mounting plate 403. Two sets of second connecting members 405 are provided at the bottom of the first mounting plate 401, and a second rotating column is rotatably arranged between the second connecting members 405. One end of the second rotating column is connected to a first drive motor 406 provided on the outer side of the second connecting member 405. An anti-rotation device is installed at the output end of the first drive motor 406. The anti-rotation device is existing technology and will not be described in detail. By setting the anti-rotation device, the second rotating column can be prevented from rotating on the plate. The second rotating column rotates under the influence of weight, and its outer side is movably connected to the second mounting block 408 on the top of the second mounting plate 403 via a V-shaped telescopic connecting arm 407. The V-shaped telescopic connecting arm 407 includes a first connecting arm, one end of which is movably connected to the second connecting arm. A side plate 7 is provided on one side of the second mounting plate 403, and two sets of drive rods 701 are mounted on the outer side of the side plate 7. A stop block 702 is provided on the inner side of the two sets of drive rods 701, and the height of the drive rods 701 is greater than that of the stop block 702. Two sets of drive rod inserts 8 that cooperate with the drive rods 701 are fixedly provided on the top of the positioning plate 5. A vacuum tube 4031 is provided inside the second mounting plate 403, and the vacuum tube 4031 is connected to the vacuum tube 408 at the bottom of the second mounting plate 403. The vacuum suction cup 4032 is connected to the vacuum tube 4031. One end of the vacuum tube 4031 is connected to the vacuum pump 4033 located on the top of the outer side of the second mounting plate 403 via an air extraction pipe. The vacuum tube 4031 is connected to the exhaust pipe 4034, one end of which extends to the outer side of the second mounting plate 403. A matching electric valve is installed inside the exhaust pipe 4034. By setting the exhaust pipe 4034, it is easy to change the vacuum state of the vacuum suction cup 4032, so that the vacuum suction cup 4032 no longer adsorbs objects. In use, under the action of the L-shaped electric slide rail 3 and the electric slider 301, the vacuum suction cup 4032 moves to the top of the plate placement slot 2. The hydraulic rod 303 drives the vacuum suction cup 4032 to descend. When the vacuum suction cup 4032 is in contact with the plate placement slot 2, the vacuum suction cup 4032 moves to the top of the plate placement slot 2. When the top plate in the placement groove 2 comes into contact with the plate, the vacuum pump 4033 is activated. Under the action of the vacuum pump 4033, the gas inside the vacuum suction cup 4032 is extracted, thereby allowing the vacuum suction cup 4032 to adhere to the top of the plate. At this time, the plate is moved above the positioning plate 5 by the action of the L-shaped electric slide rail 3 and the electric slider 301. After placement, the hydraulic rod 303 drives the second mounting plate 403 to move upward. After moving to a certain height, the first drive motor 406 is activated. Under the action of the first drive motor 406, the second mounting plate 403 is rotated around the first connector 402 by the V-shaped telescopic connecting arm 407. When the second mounting plate 403 rotates 90 degrees, the drive rod 701 is vertically positioned above the drive rod insert 8.When hydraulic rod 303 is activated, drive rod 701 is inserted into drive rod insert 8, and abutment 702 is not in contact with the top of the plate. At this point, the positioning plate 5 and the plate clamped above it can move laterally via L-shaped electric slide rail 3 and electric slider 301. When the positioning plate 5 no longer needs to move, L-shaped electric slide rail 3 and electric slider 301 are deactivated, and hydraulic rod 303 is activated again, causing abutment 702 to move downwards and press down on the plate, thus restricting the position of the plate and positioning plate 5.

[0037] Specifically, the drive rod insert 8 includes an open cylinder 801, and the bottom of the open cylinder 801 is fixedly connected to the top of the positioning plate 5. A movable plate 802 is provided inside the open cylinder 801. The movable plate 802 is slidably connected to the inside of the open cylinder 801, and the bottom of the movable plate 802 is connected to the bottom of the inner side of the open cylinder 801 through symmetrically arranged springs 803. When the abutment block 702 contacts the top of the plate, the spring 803 is in a compressed state. Under the influence of the reaction of the spring 803, it can apply downward pressure to the positioning plate 5, thereby playing a certain positive role in limiting the position of the positioning plate 5.

[0038] Specifically, the clamping plate mechanism 6 includes a second drive motor 601, which is mounted on the outside of the positioning plate 5. The positioning plate 5 has an installation groove inside, and a gear 602 is installed inside the installation groove. The second drive motor 601 can drive the gear 602 to rotate, and the gear 602 meshes with two sets of rack plates 603. One end of the rack plate 603 is fixedly connected to the first slider 604, and the first slider 604 is connected to the second slider 606 through a connecting rod 605. The top of the second slider 606 is connected to the clamping plate 608 slidably mounted on the top of the positioning plate 5 through a connecting rod 607. The positioning plate 5 has a movable through groove that cooperates with the connecting rod 607.

[0039] To further explain, a first lateral limiting slide bar 9 is symmetrically arranged inside the mounting groove, and the first lateral limiting slide bar 9 is slidably connected to the first slider 604. By setting the first lateral limiting slide bar 9, the movement direction of the first slider 604 can be limited, thereby improving the stability of the first slider 604 during movement. The second slider 606 moves within the moving groove opened in the positioning plate 5, and the second slider 606 is slidably connected to a second lateral limiting slide bar 10 symmetrically arranged within the moving groove. By setting the second lateral limiting slide bar 10, the movement direction of the second slider 606 can be limited, thereby improving the stability of the second slider 606 during movement.

[0040] When it is necessary to clamp and limit the plate placed above the positioning plate 5, the second drive motor 601 is turned on. Under the action of the second drive motor 601, the gear 602 rotates. The rotation of the gear 602 drives the two sets of rack plates 603 to move, thereby driving the second slider 606 to move through the first slider 604 and the connecting rod 605. Under the action of the movement of the second slider 606, the clamping plate 608 is driven to move synchronously through the connecting rod 607. The two sets of clamping plates 608 move closer and closer to clamp and limit the plate placed on the inner side.

[0041] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping fixture for machining cemented carbide plates, comprising a mounting table (1), characterized in that: The mounting platform (1) is provided with a plate placement groove (2) on one side, and an L-shaped electric slide rail (3) is installed above the mounting platform (1) and the plate placement groove (2). An electric slider (301) is installed inside the L-shaped electric slide rail (3) for use with it. The electric slider (301) is connected to the hydraulic rod (303) through the connecting block (302). The hydraulic rod (303) can drive the suction cup positioning mechanism (4) to perform lifting and lowering operations. A positioning plate (5) for use with the suction cup positioning mechanism (4) is slidably provided above the mounting platform (1), and a clamping plate mechanism (6) is installed on the top of the positioning plate (5). The suction cup positioning mechanism (4) includes a first mounting plate (401), and two sets of first connecting members (402) are provided at the bottom of the first mounting plate (401). A first rotating column is rotatably arranged between the first connecting members (402), and the outer side of the first rotating column is connected to a first mounting block (404) provided at the top of the second mounting plate (403). Two sets of second connecting members (405) are provided at the bottom of the first mounting plate (401), and a second rotating column is rotatably arranged between the second connecting members (405). One end of the second rotating column is connected to a first drive motor (406) provided on the outer side of the second connecting member (405), and the outer side of the second rotating column is connected to the top of the second mounting plate (403) through a V-shaped telescopic connecting arm (407). The second mounting block (408) is movably connected to the second mounting plate (403). A side plate (7) is provided on one side of the second mounting plate (403). Two sets of drive rods (701) are installed on the outside of the side plate (7), and a stop block (702) is provided on the inside of the two sets of drive rods (701). Two sets of drive rod inserts (8) that cooperate with the drive rods (701) are fixedly provided on the top of the positioning plate (5). A vacuum tube (4031) is provided inside the second mounting plate (403), and the vacuum tube (4031) is connected to a vacuum suction cup (4032) provided at the bottom of the second mounting plate (403). One end of the vacuum tube (4031) is connected to a vacuum pump (4033) provided on the top of the outside of the second mounting plate (403) through an air extraction pipe.

2. The clamping fixture for machining cemented carbide plates according to claim 1, characterized in that: An anti-rotation device is installed at the output end of the first drive motor (406).

3. The clamping fixture for machining cemented carbide plates according to claim 1, characterized in that: The height of the drive rod (701) is greater than that of the stop block (702).

4. The clamping fixture for machining cemented carbide plates according to claim 1, characterized in that: The vacuum tube (4031) is connected to the exhaust pipe (4034), one end of which extends through to the outside of the second mounting plate (403), and an electric valve matching it is installed inside the exhaust pipe (4034).

5. The clamping fixture for machining cemented carbide plates according to claim 1, characterized in that: The drive rod insert (8) includes an open cylinder (801), and the bottom of the open cylinder (801) is fixedly connected to the top of the positioning plate (5). A movable plate (802) is provided inside the open cylinder (801), and the bottom of the movable plate (802) is connected to the bottom of the inner side of the open cylinder (801) by symmetrically arranged springs (803).

6. The clamping fixture for machining cemented carbide plates according to claim 5, characterized in that: The movable plate (802) is slidably connected to the inside of the open cylinder (801).

7. The clamping fixture for machining cemented carbide plates according to claim 1, characterized in that: The clamping plate mechanism (6) includes a second drive motor (601), which is installed on the outside of the positioning plate (5). The positioning plate (5) has an installation groove inside, and a gear (602) is provided inside the installation groove. The second drive motor (601) can drive the gear (602) to rotate, and the gear (602) meshes with two sets of rack plates (603). One end of the rack plate (603) is fixedly connected to the first slider (604), and the first slider (604) is connected to the second slider (606) through a connecting rod (605). The top of the second slider (606) is connected to the clamping plate (608) that is slidably set on the top of the positioning plate (5) through a connecting rod (607). The positioning plate (5) has a movable through groove that cooperates with the connecting rod (607).

8. The clamping fixture for machining cemented carbide plates according to claim 7, characterized in that: The mounting groove is symmetrically provided with a first transverse limiting slide bar (9), and the first transverse limiting slide bar (9) is slidably connected to the first slider (604).

9. A clamping fixture for machining cemented carbide plates according to claim 7, characterized in that: The second slider (606) moves within the moving groove of the positioning plate (5), and the second slider (606) is slidably connected to the second transverse limiting slider (10) symmetrically arranged within the moving groove.