Workpiece clamping device and clamping method

Abstract

The invention discloses a workpiece clamping device and a clamping method, belonging to the technical field of machine tool parts processing, comprising a base, a plurality of clamping components are arranged on the upper part of the base, the clamping components include a suction mechanism and a claw mechanism; the claw mechanism includes a claw seat fixedly connected to the base, a claw is slidably matched on the claw seat, and a claw driving mechanism is arranged between the claw and the claw seat; the suction mechanism is slidably matched with the base, and a fastener is arranged between the suction mechanism and the base; a fork mechanism is fixedly arranged on the suction mechanism, and the fork mechanism includes a rotatable fork; in the same clamping component, when the fork rotates to the position of clamping the claw, the suction mechanism and the claw are synchronously linked, and when the fork rotates to the position of releasing the claw, the suction mechanism is separated from the claw. The tooling of the invention can suck and clamp workpieces of different sizes and models, thereby reducing the number of tooling required, and reducing the cost and floor space of the tooling.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool parts processing, and in particular relates to a workpiece clamping device and a clamping method. Background Art

[0002] In the field of machining, large and medium-sized standard circular or near-standard circular workpieces usually weigh more than 2 tons. Due to the characteristics of large cutting force and vibration during machining, workpiece clamping has always been a difficult point in machining. Figure 1 As shown, the combined structure of the support top 01, the pressure plate 02, the clamping screw 03, and the clamping nut 04 is generally adopted, and the pressure plate 02 presses the workpiece onto the tooling by tightening the clamping nut 04. This method has a simple structure, but there are problems: 1) Different types of workpieces require special tooling of different sizes, the tooling cost is relatively high, and the tooling occupies a large area when stored; 2) During machining, the cutting force can reach more than 10000N, and the vibration is large. During the machining process, the pressure plate will loosen due to vibration, causing the workpiece to loosen, and the workpiece will shift under the action of the vibration force, and then the workpiece will be scrapped, or even cause the workpiece to slip, causing danger to the machine tool and personnel; 3) When tightening the pressure plate 02, a large tightening force is required, which makes the operator have high-intensity physical exertion. Summary of the invention

[0003] In order to solve the problems that a single tool in the existing clamping scheme for standard circular or nearly circular workpieces cannot be used for workpieces of various types, the clamping is easy to loosen, and the tightening consumes the operator's physical strength, the present invention proposes a workpiece clamping device.

[0004] A workpiece clamping device comprises a base, a plurality of clamping assemblies are evenly arranged on the upper part of the base along the circumferential direction, and the clamping assemblies comprise a suction mechanism for clamping the bottom end surface of the workpiece and a claw mechanism for clamping the outer side surface of the workpiece;

[0005] The claw mechanism comprises a claw seat fixedly connected to the base, the claw seat is provided with a claw slidably matched along the circumferential radial direction, and a claw driving mechanism for driving the claw to move is arranged between the claw and the claw seat;

[0006] The suction mechanism is slidably matched with the base, and a fastener is arranged between the suction mechanism and the base;

[0007] A shift fork mechanism is fixedly arranged on the suction mechanism, and the shift fork mechanism comprises a rotatable shift fork;

[0008] In the same clamping assembly, when the shift fork rotates to a position that clamps the claw, the suction mechanism and the claw are synchronously linked, and when the shift fork rotates to a position that releases the claw, the suction mechanism is disengaged from the claw.

[0009] Preferably, the clamping assembly comprises a clamping claw mechanism and two suction mechanisms symmetrically arranged on both sides of the clamping claw mechanism, and a fork mechanism is arranged on each side of the clamping claw mechanism.

[0010] Preferably, the jaw driving mechanism comprises a lead screw rotatably engaged with the jaw seat, the lead screw is threadably engaged with a lead screw nut, and the lead screw nut is fixedly arranged on the jaw.

[0011] Preferably, the suction mechanism comprises a support seat that is slidably matched with the base, and a suction piece is fixedly arranged on the upper part of the support seat.

[0012] Preferably, the fork mechanism comprises a fork seat fixedly connected to the support seat, and the fork and the fork seat are rotationally matched via a pin shaft;

[0013] The end of the shift fork is provided with a clamping groove capable of clamping the clamping claw.

[0014] Preferably, the suction member is an electro-permanent magnet block or a vacuum suction cup.

[0015] Preferably, a limit block fixedly connected to the base is provided between adjacent clamping components, and a detection mechanism for confirming the position of the support seat is provided on the limit block.

[0016] Preferably, the detection mechanism comprises an identification plate fixedly arranged on the limit block, a plurality of engraved lines corresponding to workpieces of different models are arranged on the identification plate along the circumferential radial direction, and a marking line is engraved on the support seat.

[0017] Preferably, the detection mechanism comprises a grating ruler, the scale grating in the grating ruler is fixedly arranged on a limit block, and the grating reading head in the grating ruler is fixedly arranged on a supporting seat.

[0018] The invention also provides a workpiece clamping method.

[0019] A workpiece clamping method is implemented using a workpiece clamping device, comprising the following steps:

[0020] Step S1, fixing the base on the workbench of the machine tool, loosening the fasteners between the suction mechanism and the base, so that the suction mechanism can move freely relative to the base;

[0021] Step S2, rotating the shift fork, so that the shift fork clamps the claw, so that the suction mechanism and the claw are in a synchronous linkage state;

[0022] Step S3, the clamping claw driving mechanism controls the clamping claw to drive the suction mechanism to move, so that the suction mechanism moves to a position suitable for sucking the workpiece to be clamped;

[0023] Step S4, tightening the fasteners between the suction mechanism and the base to fix the suction mechanism relative to the base;

[0024] Step S5, rotating the shift fork, the shift fork releases the claw, so that the suction mechanism is out of the linkage state with the claw;

[0025] Step S6, placing the workpiece to be clamped on the top of the suction mechanism;

[0026] Step S7, the jaw driving mechanism controls the jaw to move until the workpiece is clamped;

[0027] Step S8, controlling the suction mechanism to generate suction to achieve tightening of the workpiece;

[0028] Step S9, performing normal processing on the workpiece;

[0029] Step S10, after the workpiece is processed, the suction mechanism is controlled to eliminate the suction, and the claw driving mechanism controls the claw to move to release the workpiece, and the processed workpiece is removed;

[0030] Step S11, looping steps S1 to S10, and producing workpieces in batches.

[0031] The beneficial effects of the present invention are:

[0032] (1) The slidable arrangement of the suction mechanism and the base and the coordinated arrangement of the suction mechanism, the claw mechanism and the fork mechanism in the present invention enable the tooling to suck and clamp workpieces of different sizes and models, thereby reducing the number of tooling required and reducing the cost and floor space of the tooling.

[0033] (2) The present invention is applicable to workpieces of different sizes and models, which increases the versatility of the tooling and is suitable for batch clamping production of workpieces, which can effectively reduce labor intensity and save processing costs.

[0034] (3) The coordinated arrangement of the suction mechanism, the clamping claw mechanism and the fork mechanism in the present invention can realize the synchronous linkage between the suction mechanism and the clamping claw and the independent movement of the clamping claw, thereby realizing the rapid adjustment of the tooling. When the clamping claw moves independently, it can realize both the adjustment of the workpiece position and the clamping of the workpiece.

[0035] (4) The suction mechanism in the present invention can generate continuous and stable suction, which solves the problem of the pressure plate losing its clamping force due to loosening due to vibration in the existing pressure plate clamping method, ensures processing stability, improves workpiece processing quality, and increases safety. In addition, compared with the existing pressure plate clamping method, it no longer requires operators to manually tighten the pressure plate, reducing the labor intensity of operators; and the suction mechanism can change the suction size by changing the unit suction according to production needs, effectively controlling production costs.

[0036] (5) The detection mechanism in the present invention can confirm the position to which the suction mechanism needs to be adjusted, thereby speeding up the adjustment of the tooling and facilitating rapid changeover of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0038] Figure 1 It is a structural schematic diagram of an existing clamping device for a standard circular ring-shaped or nearly standard circular ring-shaped annular workpiece;

[0039] Figure 2 is a schematic structural perspective view of the workpiece clamping device of the present invention;

[0040] Figure 3 yes Figure 2 A magnified view of middle;

[0041] Figure 4 It is a schematic front view of the structure of the workpiece clamping device of the present invention;

[0042] Figure 5 yes Figure 4 Enlarged view of middle B;

[0043] Figure 6 is a schematic top view of the structure of the workpiece clamping device of the present invention;

[0044] Figure 7 It is a schematic diagram of the state of the shift fork when the clamping claw and the suction mechanism are linked in the present invention;

[0045] Figure 8 It is a schematic diagram of the state of the shift fork when the clamping claw and the suction mechanism are released from linkage in the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the claw mechanism in the present invention;

[0047] Fig.10 It is a schematic structural diagram of the workpiece clamping device of the present invention when clamping a workpiece;

[0048] in:

[0049] 01-support top, 02-pressing plate, 03-pressing screw, 04-pressing nut, 05-workpiece;

[0050] 1-base, 2-claw seat, 3-claw, 4-fork, 41-slot, 5-screw, 6-screw nut, 7-support seat, 8-suction member, 9-fork seat, 10-pin shaft, 11-limit block, 12-identification plate. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] Embodiment 1:

[0053] See also Figure 2-Figure 10 A workpiece clamping device comprises a base 1, a plurality of clamping assemblies are evenly arranged on the upper part of the base 1 along the circumferential direction, and the clamping assemblies comprise a suction mechanism for clamping the bottom end surface of the workpiece 05 and a claw mechanism for clamping the outer side surface of the workpiece 05;

[0054] The clamping mechanism comprises a clamping seat 2 fixedly connected to the base 1, a clamping claw 3 is slidably matched with the clamping seat 2 along the circumferential radial direction, and a clamping claw driving mechanism for driving the clamping claw 3 to move is arranged between the clamping claw 3 and the clamping seat 2;

[0055] The suction mechanism is slidably matched with the base 1, and a fastener is arranged between the suction mechanism and the base 1; the fastener adopts a structure such as a bolt or a screw that can be loosened and disassembled;

[0056] A shift fork mechanism is fixedly arranged on the suction mechanism, and the shift fork mechanism comprises a rotatable shift fork 4;

[0057] In the same clamping assembly, when the fork 4 rotates to a position to clamp the claw 3, the suction mechanism and the claw 3 are synchronously linked, and when the fork 4 rotates to a position to release the claw 3, the suction mechanism is separated from the claw 3.

[0058] In the present application, when the shift fork 4 rotates to the position of clamping the claw 3, the suction mechanism and the claw 3 are synchronously linked. At this time, when the claw driving mechanism controls the claw 3 to move, the suction mechanism moves synchronously. When in use, in the linkage state, the suction mechanism is controlled by the claw driving mechanism to move to a position suitable for sucking the workpiece 05 to be clamped; then the shift fork 4 is rotated to the position of releasing the claw 3, and on the basis of the suction mechanism being positioned at a position suitable for sucking the workpiece 05 to be clamped, the claw driving mechanism controls the claw 3 to move in the direction of the workpiece 05 to be clamped until it contacts and clamps the workpiece 05. In addition, the claw 3 can also push the workpiece 05 to move, so as to adjust the position of the workpiece 05.

[0059] Preferably, the clamping assembly includes a claw mechanism and two suction mechanisms symmetrically arranged on both sides of the claw mechanism, and a fork mechanism is arranged on each side of the claw mechanism.

[0060] Preferably, the jaw driving mechanism includes a lead screw 5 rotatably engaged with the jaw seat 2 , the lead screw 5 is threadedly engaged with a lead screw nut 6 , and the lead screw nut 6 is fixedly disposed on the jaw 3 .

[0061] In the present application, the tool for driving the lead screw 5 to rotate may be a manual wrench, a pneumatic wrench, an electric wrench, etc.

[0062] Preferably, the suction mechanism comprises a support seat 7 that is slidably matched with the base 1 , and a suction member 8 is fixedly disposed on the upper portion of the support seat 7 .

[0063] Preferably, the fork mechanism comprises a fork seat 9 fixedly connected to the support seat 7, and the fork 4 and the fork seat 9 are rotatably matched via a pin shaft 10;

[0064] The end of the shift fork 4 is provided with a clamping groove 41 capable of clamping the clamping claw 3 .

[0065] Preferably, the suction member 8 is an electro-permanent magnet block. An electro-permanent magnet block is a magnet that can be controlled by electricity, which only needs electricity when magnetizing or demagnetizing, and can maintain magnetic force without electricity afterwards.

[0066] Preferably, a limit block 11 fixedly connected to the base 1 is provided between adjacent clamping assemblies, and a detection mechanism for confirming the position of the support seat 7 is provided on the limit block 11. Specifically, a guide limit groove is formed between adjacent limit blocks 11, and the two support seats 7 in the clamping assembly are located in the guide limit groove and slide in radial direction with the guide limit groove. In the present application, the guide limit groove provides a certain guide limit effect on the radial movement of the two support seats 7 in the clamping assembly.

[0067] Preferably, the detection mechanism includes an identification plate 12 fixedly mounted on the limit block 11, and a plurality of engraved lines corresponding to different types of workpieces 05 are arranged on the identification plate 12 along the circumferential radial direction, and a marking line is engraved on the support seat 7. When the support seat 7 drives the suction member 8 to move, which engraved line on the identification plate 12 the marking line is aligned with indicates that the position of the suction member 8 at this time is suitable for the workpiece 05 of the type corresponding to the engraved line.

[0068] In the present application, a supporting portion for supporting the clamping assembly is disposed on the upper portion of the base 1, the supporting portion is in a circular ring structure, and the supporting seat 7 and the suction member 8 are both in an arc-shaped structure.

[0069] Embodiment 2:

[0070] A workpiece clamping method, implemented using the workpiece clamping device in Example 1, comprises the following steps:

[0071] Step S1, fixing the base 1 on the workbench of the machine tool, loosening the fasteners between the suction mechanism and the base 1, so that the suction mechanism can move freely relative to the base 1;

[0072] Step S2, rotating the shift fork 4, the clamping groove 41 of the shift fork 4 clamps the clamping claw 3, so that the suction mechanism and the clamping claw 3 are in a synchronous linkage state;

[0073] Step S3, the claw driving mechanism controls the claw 3 to drive the suction mechanism to move, so that the suction mechanism moves to a position suitable for sucking the workpiece 05 to be clamped. Specifically, when the marking line on the support seat 7 is aligned with the engraved line corresponding to the model of the workpiece 05 to be clamped on the identification plate 12, it is confirmed that the suction mechanism has moved into place;

[0074] Step S4, tightening the fasteners between the suction mechanism and the base 1 to fix the suction mechanism relative to the base 1;

[0075] Step S5, rotating the shift fork 4, the shift fork 4 releases the claw 3, so that the suction mechanism is out of the linkage state with the claw 3;

[0076] Step S6, placing the workpiece 05 to be clamped on the top of the suction mechanism;

[0077] Step S7, the clamping jaw driving mechanism controls the clamping jaw 3 to move until the workpiece 05 is clamped. In this process, when the position of the workpiece 05 needs to be adjusted, the position adjustment can be achieved by pushing and cooperating the clamping jaws 3 on the workpiece 05;

[0078] Step S8, controlling the suction mechanism to generate suction to achieve the clamping of the workpiece 05; specifically, the workpiece 05 is clamped by the magnetic force of the electric permanent magnet block;

[0079] Step S9, performing normal processing on workpiece 05;

[0080] Step S10, after the workpiece 05 is processed, the suction mechanism is controlled to eliminate the suction, that is, the magnetic force of the permanent magnet block is eliminated, and the claw driving mechanism controls the claw 3 to move to release the workpiece 05, and the processed workpiece 05 is removed;

[0081] Step S11, looping steps S1 to S10, batch producing workpiece 05.

[0082] Embodiment 3:

[0083] The difference from the embodiment 1 is that the suction member 8 is a vacuum suction cup. The vacuum suction cup can generate suction through the air extraction process. The remaining technical features are the same as those in the embodiment 1.

[0084] Embodiment 4:

[0085] A workpiece clamping method, implemented using the workpiece clamping device in Example 3, comprises the following steps:

[0086] Step S1, the base 1 is fixed on the workbench of the machine tool, and the fasteners between the suction mechanism and the base 1 are loosened so that the suction mechanism can move freely relative to the base 1;

[0087] Step S2, rotating the shift fork 4, the clamping groove 41 of the shift fork 4 clamps the clamping claw 3, so that the suction mechanism and the clamping claw 3 are in a synchronous linkage state;

[0088] Step S3, the claw driving mechanism controls the claw 3 to drive the suction mechanism to move, so that the suction mechanism moves to a position suitable for sucking the workpiece 05 to be clamped. Specifically, when the marking line on the support seat 7 is aligned with the engraved line corresponding to the model of the workpiece 05 to be clamped on the identification plate 12, it is confirmed that the suction mechanism has moved into place;

[0089] Step S4, tightening the fasteners between the suction mechanism and the base 1 to fix the suction mechanism relative to the base 1;

[0090] Step S5, rotating the shift fork 4, the shift fork 4 releases the claw 3, so that the suction mechanism is out of the linkage state with the claw 3;

[0091] Step S6, placing the workpiece 05 to be clamped on the top of the suction mechanism;

[0092] Step S7, the clamping jaw driving mechanism controls the clamping jaw 3 to move until the workpiece 05 is clamped. In this process, when the position of the workpiece 05 needs to be adjusted, the position adjustment can be achieved by pushing and cooperating the clamping jaws 3 on the workpiece 05;

[0093] Step S8, controlling the suction mechanism to generate suction to achieve the clamping of the workpiece 05; specifically, clamping the workpiece 05 by the suction of the vacuum suction cup;

[0094] Step S9, performing normal processing on workpiece 05;

[0095] Step S10, after the workpiece 05 is processed, the suction mechanism is controlled to eliminate the suction, that is, the suction of the vacuum suction cup is eliminated, and the claw driving mechanism controls the claw 3 to move to release the workpiece 05, and the processed workpiece 05 is removed;

[0096] Step S11, looping steps S1 to S10, batch producing workpiece 05.

[0097] Embodiment 5:

[0098] The difference from the first embodiment is that the detection mechanism includes a grating ruler, the scale grating in the grating ruler is fixedly arranged on the limit block 11, and the grating reading head in the grating ruler is fixedly arranged on the support seat 7. The remaining technical features are the same as those in the first embodiment.

[0099] Embodiment 6:

[0100] A workpiece clamping method, implemented using the workpiece clamping device in Example 5, comprises the following steps:

[0101] Step S1, fixing the base 1 on the workbench of the machine tool, loosening the fasteners between the suction mechanism and the base 1, so that the suction mechanism can move freely relative to the base 1;

[0102] Step S2, rotating the shift fork 4, the clamping groove 41 of the shift fork 4 clamps the clamping claw 3, so that the suction mechanism and the clamping claw 3 are in a synchronous linkage state;

[0103] Step S3, the claw driving mechanism controls the claw 3 to drive the suction mechanism to move, so that the suction mechanism moves to a position suitable for sucking the workpiece 05 to be clamped. Specifically, the grating ruler is used to confirm whether the suction mechanism has moved into place;

[0104] Step S4, tightening the fasteners between the suction mechanism and the base 1 to fix the suction mechanism relative to the base 1;

[0105] Step S5, rotating the shift fork 4, the shift fork 4 releases the claw 3, so that the suction mechanism is out of the linkage state with the claw 3;

[0106] Step S6, placing the workpiece 05 to be clamped on the top of the suction mechanism;

[0107] Step S7, the clamping jaw driving mechanism controls the clamping jaw 3 to move until the workpiece 05 is clamped. In this process, when the position of the workpiece 05 needs to be adjusted, the position adjustment can be achieved by pushing and cooperating the clamping jaws 3 on the workpiece 05;

[0108] Step S8, controlling the suction mechanism to generate suction to achieve the clamping of the workpiece 05; specifically, the workpiece 05 is clamped by the magnetic force of the electric permanent magnet block;

[0109] Step S9, performing normal processing on workpiece 05;

[0110] Step S10, after the workpiece 05 is processed, the suction mechanism is controlled to eliminate the suction, that is, the magnetic force of the permanent magnet block is eliminated, and the claw driving mechanism controls the claw 3 to move to release the workpiece 05, and the processed workpiece 05 is removed;

[0111] Step S11, looping steps S1 to S10, batch producing workpiece 05.

[0112] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the protection scope of the present invention.

Claims

1. A workpiece clamping device, characterized in that: It comprises a base (1), wherein a plurality of clamping assemblies are evenly arranged on the upper part of the base (1) along the circumferential direction, wherein the clamping assemblies comprise a suction mechanism for clamping the bottom end surface of a workpiece (05) and a clamping claw mechanism for clamping the outer side surface of the workpiece (05); The clamping claw mechanism comprises a clamping claw seat (2) fixedly connected to the base (1); a clamping claw (3) is slidably fitted on the clamping claw seat (2) along a circumferential radial direction; and a clamping claw driving mechanism for driving the clamping claw (3) to move is provided between the clamping claw (3) and the clamping claw seat (2); The suction mechanism and the base (1) are slidably matched, and a fastener is provided between the suction mechanism and the base (1); A shift fork mechanism is fixedly arranged on the suction mechanism, and the shift fork mechanism comprises a rotatable shift fork (4); In the same clamping assembly, when the shift fork (4) rotates to a position for clamping the clamping claw (3), the suction mechanism and the clamping claw (3) are synchronously linked, and when the shift fork (4) rotates to a position for releasing the clamping claw (3), the suction mechanism is separated from the clamping claw (3); The suction mechanism comprises a support seat (7) that is slidably matched with the base (1), and a suction member (8) is fixedly arranged on the upper part of the support seat (7); The shift fork mechanism comprises a shift fork seat (9) fixedly connected to the support seat (7), and the shift fork (4) and the shift fork seat (9) are rotationally matched via a pin shaft (10); The end of the shift fork (4) is provided with a clamping groove (41) capable of clamping the clamping claw (3); A limit block (11) fixedly connected to the base (1) is provided between adjacent clamping components, and a detection mechanism for confirming the position of the support seat (7) is provided on the limit block (11).

2. The workpiece clamping device according to claim 1, characterized in that: The clamping assembly includes a clamping claw mechanism and two suction mechanisms symmetrically arranged on both sides of the clamping claw mechanism, and a fork mechanism is respectively arranged on both sides of the clamping claw mechanism.

3. The workpiece clamping device according to claim 1, characterized in that: The clamping claw driving mechanism comprises a lead screw (5) rotatably engaged with the clamping claw seat (2), the lead screw (5) being threadably engaged with a lead screw nut (6), and the lead screw nut (6) being fixedly arranged on the clamping claw (3).

4. The workpiece clamping device according to claim 1, characterized in that: The suction member (8) is an electric permanent magnet block or a vacuum suction cup.

5. The workpiece clamping device according to claim 1, characterized in that: The detection mechanism comprises an identification plate (12) fixedly arranged on a limit block (11), a plurality of engraved lines corresponding to different types of workpieces (05) are arranged on the identification plate (12) along a circumferential radial direction, and a marking line is engraved on the support seat (7).

6. The workpiece clamping device according to claim 1, characterized in that: The detection mechanism comprises a grating ruler, wherein the scale grating in the grating ruler is fixedly arranged on a limit block (11), and the grating reading head in the grating ruler is fixedly arranged on a support seat (7).

7. A workpiece clamping method, implemented by using the workpiece clamping device according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step S1, fixing the base (1) on the workbench of the machine tool, loosening the fasteners between the suction mechanism and the base (1), so that the suction mechanism can move freely relative to the base (1); Step S2, rotating the shift fork (4), so that the shift fork (4) clamps the clamping claw (3), so that the suction mechanism and the clamping claw (3) are in a synchronous linkage state; Step S3, the clamping claw driving mechanism controls the clamping claw (3) to drive the suction mechanism to move, so that the suction mechanism moves to a position suitable for sucking the workpiece (05) to be clamped; Step S4, tightening the fasteners between the suction mechanism and the base (1) to fix the suction mechanism relative to the base (1); Step S5, rotating the shift fork (4), the shift fork (4) releases the clamping claw (3), so that the suction mechanism is out of the linkage state with the clamping claw (3); Step S6, placing the workpiece to be clamped (05) on the top of the suction mechanism; Step S7, the clamping jaw driving mechanism controls the clamping jaw (3) to move until the workpiece (05) is clamped; Step S8, controlling the suction mechanism to generate suction to achieve tightening of the workpiece (05); Step S9, performing normal processing on the workpiece (05); Step S10, after the workpiece (05) is processed, the suction mechanism is controlled to eliminate the suction, and the claw driving mechanism controls the claw (3) to move to release the workpiece (05), and the processed workpiece (05) is removed; Step S11, looping steps S1 to S10, batch producing workpieces (05).

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