Methods for clamping blanks, clamping mechanisms, and blank processing devices

Abstract

This invention relates to the field of fixture technology, specifically to a method for testing the clamping of blanks, a clamping mechanism, and a blank processing apparatus. The blank clamping test method includes the following steps: S1, installing the blank at a preset position and inserting multiple non-standard jaws into the bottom opening and top opening of the blank; S2, moving all non-standard jaws horizontally toward the milling surface of the blank, stopping the horizontal movement when the non-standard jaws reach their maximum horizontal travel or when they are horizontally clamped against the radial sidewall of their corresponding opening; S3, applying a horizontal thrust to the blank in the opposite direction to the movement of the non-standard jaws to confirm whether the blank can move in the opposite direction to the movement of the non-standard jaws, thereby confirming whether the blank is clamped. The purpose of this invention is to overcome the problem in the prior art that it is difficult to accurately confirm that all blanks can be clamped by standard jaws.

Description

Technical Field

[0001] This invention relates to the field of fixture technology, and more specifically to a method for testing the clamping of blanks, a clamping mechanism, and a blank processing device. Background Technology

[0002] Some mechanical equipment has limited internal space, resulting in a limited range of movement for the clamping mechanism installed within it, meaning a small maximum stroke range. Due to differences in batches and manufacturers of raw materials, there can be significant dimensional variations between different raw materials. When the mechanical equipment is processing the raw materials, even if the clamping mechanism reaches its maximum stroke, the standard jaws of the clamping mechanism may not yet be in contact with the raw material, preventing it from being properly clamped. Therefore, to ensure processing quality, it is essential to confirm before processing that all raw materials in the batch can be clamped by the standard jaws of the clamping mechanism.

[0003] Currently, the standard method for determining this is first-piece verification. If the first blank in a batch can be clamped by the standard jaws, it is assumed that all blanks in that batch can be clamped by the standard jaws. However, in reality, the dimensional differences between different blanks can be significant, and the fact that the first blank can be clamped by the standard jaws does not necessarily mean that all blanks can be clamped. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem in the prior art that it is difficult to accurately confirm that all blanks can be clamped by standard jaws.

[0005] To achieve the above objectives, the present invention provides a method for clamping a blank, wherein the top of the blank has multiple top openings spaced apart along its length, and the bottom of the blank has multiple bottom openings spaced apart along its length; the top and bottom openings have the same diameter tolerance, and one side of the blank in the width direction is a milled surface. The method for clamping the blank includes the following steps: S1, the blank is vertically installed at a preset position, and multiple non-standard clamping jaws of the clamping mechanism located below the blank extend one-to-one from bottom to top into the bottom openings of the blank, and multiple non-standard clamping jaws of the clamping mechanism located above the blank extend one-to-one from top to bottom into the blank. In the top opening; wherein, in the working state, relative to the standard jaws, the side of the non-standard jaws used to clamp the blank is thinned in the direction away from the milling surface, so that the thickness difference between the non-standard jaws and the standard jaws is greater than or equal to the hole diameter tolerance and less than the thickness value of the non-standard jaws; S2, move all non-standard jaws horizontally toward the milling surface of the blank, and stop the horizontal movement when the non-standard jaws reach the maximum stroke of the horizontal movement or when they are horizontally clamped on the radial sidewall of the corresponding opening; S3, apply a horizontal thrust to the blank in the opposite direction of the movement of the non-standard jaws to confirm whether the blank can move in the opposite direction of the movement of the non-standard jaws, and thus confirm whether the blank is clamped.

[0006] In some embodiments, the thickness difference is 1.25 times the aperture size tolerance.

[0007] The present invention also provides a clamping mechanism, which includes a support device and a plurality of non-standard grippers. Some of the non-standard grippers are installed above the top surface of the support device, and some of the non-standard grippers are installed below the top surface of the support device. The non-standard grippers located above the top surface of the support device can extend into the top opening of the blank from top to bottom in a corresponding manner, and the non-standard grippers located below the top surface of the support device can extend into the bottom opening of the blank in a corresponding manner. The non-standard grippers are configured to be able to move in a limited manner along the vertical direction or the width direction of the support device. In the working state, the side of the non-standard gripper used to clamp the blank is thinned relative to the standard gripper, so that the thickness of the non-standard gripper in the width direction of the blank is less than the thickness of the standard gripper, and the thickness difference between the two thicknesses is greater than or equal to the diameter tolerance of the bottom opening and the top opening and less than the thickness value of the non-standard gripper.

[0008] In some embodiments, the clamping mechanism includes a first base and a second base, the first base being located above the top surface of the support device and the second base being located below the top surface of the support device. A non-standard gripper located above the top surface of the support device is mounted on the bottom of the first base, and a non-standard gripper located below the top surface of the support device is mounted on the top of the second base.

[0009] In some embodiments, the clamping mechanism further includes a first telescopic mechanism and a second telescopic mechanism, wherein the first telescopic mechanism is capable of driving the first base to move in a limited manner along the width direction of the support device, and the second telescopic mechanism is capable of driving the second base to move in a limited manner along the width direction of the support device.

[0010] In some embodiments, the first telescopic mechanism and the second telescopic mechanism are disposed on the same side in the width direction of the support device.

[0011] In some embodiments, the clamping mechanism further includes a lifting mechanism connected to the top of the first base to drive the first base to move vertically.

[0012] The present invention also provides a blank processing apparatus, which includes the above-mentioned clamping mechanism.

[0013] The technical solution of the present invention has the following beneficial effects:

[0014] After the non-standard jaws stop moving, all of them may be pressed against the radial sidewalls of the opening, thus clamping the blank; alternatively, only a small number of non-standard jaws may not be pressed against the radial sidewalls of the opening (i.e., the top or bottom opening), resulting in the blank not being fully clamped. A horizontal thrust is applied to the blank in the opposite direction to the movement of the non-standard jaws, i.e., a force is applied towards the non-standard jaws. This can be done mechanically or manually with a sufficiently large force. If the blank cannot move in the opposite direction to the movement of the non-standard jaws, or in other words, the blank cannot move towards the non-standard jaws, then the blank is clamped. Furthermore, since the non-standard jaws are thinner than the standard jaws by at least the same thickness as the hole diameter tolerance, if the non-standard jaws can still clamp the blank, then the standard jaws, which are thicker than the non-standard jaws, must be able to clamp any blank within the hole diameter tolerance range, thus proving that the standard jaws can clamp all blanks in the batch. If the blank can move in the opposite direction to the movement of the non-standard gripper, or if the blank can move toward the non-standard gripper, it means that the blank is not fully clamped, thus proving that the standard gripper cannot clamp all the blanks in this batch, and the on-site staff need to take further action. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of a clamping mechanism clamping a blank in one embodiment of the present invention;

[0016] Figure 2 This is a side view schematic diagram of the clamping mechanism clamping a blank in one embodiment of the present invention;

[0017] Figure 3This is a schematic diagram comparing the second non-standard gripper and the standard gripper in one embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram comparing the clamping action of non-standard and standard grippers.

[0019] Explanation of reference numerals in the attached figures

[0020] 1. Clamping mechanism; 11. Non-standard gripper; 12. First base; 13. Second base; 14. First telescopic mechanism; 15. Second telescopic mechanism; 16. Lifting mechanism; 2. Blank; 21. Top opening; 22. Bottom opening; 23. Milled surface; 3. Standard gripper. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present invention and not to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the invention.

[0022] The present invention has the following background. The top of the blank 2 is provided with a plurality of top openings 21 spaced apart along its length, and the bottom of the blank 2 is provided with a plurality of bottom openings 22 spaced apart along its length; all top openings 21 and all bottom openings 22 have the same aperture tolerance, and one side of the blank 2 in the width direction is a milled surface 23. If it is necessary to clamp the blank 2, a standard clamping jaw 3 needs to be inserted into the opening of the blank 2, and then the standard clamping jaw 3 is moved in the direction of clamping the blank 2, for example, moving the standard clamping jaw 3 towards the direction of the milled surface 23, so that the standard clamping jaw 3 can clamp onto the radial sidewall of the opening (i.e., the top opening 21 and the bottom opening 22). However, due to the limited horizontal travel of the clamping mechanism, if the standard clamp 3 does not press against the radial sidewall of the opening after it has reached its maximum travel, i.e., there is a gap between the standard clamp 3 and the radial sidewall of the opening, then the standard clamp 3 cannot press against the blank 2. Within the same batch of blanks 2, the opening diameters (i.e., the top opening 21 and the bottom opening 22) of each blank 2 may vary greatly. If only one blank 2 is tested using the standard clamp 3, it is impossible to predict whether the other blanks 2 can be clamped.

[0023] like Figures 1 to 2As shown, the present invention provides a method for clamping a blank, which includes the following steps: S1, the blank 2 is vertically installed at a preset position, and the multiple non-standard grippers 11 of the clamping mechanism 1 located below the blank 2 are inserted one by one from bottom to top into the bottom opening 22 of the blank 2, and the multiple non-standard grippers 11 of the clamping mechanism 1 located above the blank 2 are inserted one by one from top to bottom into the top opening 21 of the blank 2; wherein, in the working state, relative to the standard gripper 3, the side of the non-standard gripper 11 used to clamp the blank 2 is thinned in the direction away from the milling surface 23. S1) The thickness difference between the non-standard gripper 11 and the standard gripper 3 is greater than or equal to the hole diameter tolerance and less than the thickness of the non-standard gripper 11; S2) All non-standard grippers 11 are moved horizontally toward the milling surface 23 of the blank 2, and the non-standard grippers 11 stop moving horizontally when they reach the maximum horizontal stroke or when they are horizontally clamped on the radial sidewall of the corresponding top or bottom opening; S3) A horizontal thrust opposite to the moving direction of the non-standard grippers 11 is applied to the blank 2 to confirm whether the blank 2 can move in the opposite direction to the moving direction of the non-standard grippers 11, and thus confirm whether the blank 2 is clamped.

[0024] Specifically, in step S1, such as Figure 1 As shown, some non-standard grippers 11 are located below the preset position, and others are located above the preset position. When the blank 2 is vertically installed at the preset position, the bottom opening 22 of the blank 2 falls to the non-standard grippers 11 below the preset position, that is, some non-standard grippers 11 extend into the bottom opening 22 of the blank 2 from bottom to top. At this time, these non-standard grippers 11 extend to the center of the bottom opening 22 and do not contact the radial sidewall of the bottom opening 22. The other non-standard grippers 11 located above the preset position move downward and extend into the top opening 21 of the blank 2. At this time, these non-standard grippers 11 extend to the center of the top opening 21 and do not contact the radial sidewall of the top opening 21.

[0025] It should be noted that the non-standard gripper 11 is machined from the standard gripper 3, or the non-standard gripper 11 is a replica of the standard gripper 3. Therefore, each part of the standard gripper 3 and the non-standard gripper corresponds one-to-one, so that they can be used interchangeably in the clamping mechanism 1 at any time. Installing the standard gripper 3 can be used to process the blank 2, and installing the non-standard gripper 11 can be used to confirm whether a batch of blanks 2 can be clamped. In the width direction of the blank 2, the thickness of the non-standard gripper 11 is smaller than that of the standard gripper 3. Or, as... Figure 3 and Figure 4As shown, the non-standard gripper 11 is thinned from the standard gripper 3, and the thinned portion is the radial sidewall of the non-standard gripper 11 used to clamp the opening. Alternatively, if the non-standard gripper and the standard gripper 3 extend to the same position at the center of the same opening, the distance between the non-standard gripper 11 and the clamped surface in the opening is larger than the distance between the standard gripper 3 and the clamped surface in the opening. For example, assuming the diameter tolerance of the opening in the blank 2 is Acm, the thickness of the non-standard gripper 11 is Bcm, the thickness of the standard gripper 3 is Ccm, and the thinning dimension of the non-standard gripper 11 relative to the standard gripper 3 is Dcm (e.g., ... Figure 3 As shown in the figure, where the value B is less than the value C, the difference between the value B and the value C is equal to the value D, the value D is greater than or equal to the value A, and the value D is less than the value B. Preferably, the dimension by which the non-standard gripper 11 is thinned relative to the standard gripper 3 is less than half the thickness value of the non-standard gripper 11, that is, the value D is less than 0.5 times the value B.

[0026] Specifically, in step S2, such as Figure 2 As shown, all non-standard grippers 11 move in the direction of clamping the blank 2, for example, moving towards the milling surface 23 of the blank 2, so that the non-standard grippers 11 can press against the radial sidewall of the opening (i.e., the top opening 21 or the bottom opening 22) in the direction towards the milling surface 23. Since the travel of the clamping mechanism 1 in the width direction of the blank 2 is limited, when the clamping mechanism 1 moves horizontally to the limit of its travel, the non-standard grippers 11 will stop moving horizontally even if they are not pressed against the radial sidewall of the opening. However, when the non-standard grippers 11 are pressed against the radial sidewall of the opening, they are blocked and cannot continue to move horizontally, so the non-standard grippers 11 will also stop moving horizontally.

[0027] In step S3, after the non-standard grippers 11 stop moving, all non-standard grippers 11 may be pressed against the radial sidewall of the opening, thus clamping the blank 2; or only a small portion of the non-standard grippers 11 may not be pressed against the radial sidewall of the opening (i.e., the top opening 21 or the bottom opening 22), thus the blank 2 is not fully clamped. A horizontal thrust opposite to the direction of movement of the non-standard grippers 11 is applied to the blank 2, i.e., a force is applied toward the non-standard grippers 11. This can be done mechanically or manually by applying a sufficiently large force. If the blank 2 cannot move in the direction opposite to the direction of movement of the non-standard grippers 11, or in other words, the blank 2 cannot move toward the non-standard grippers 11, then the blank 2 is clamped. Furthermore, since the non-standard gripper 11 is thinner than the standard gripper 3 by at least the same thickness as the hole diameter tolerance, if the non-standard gripper 11 can still clamp the blank 2, the standard gripper 3, which is thicker than the non-standard gripper 11, must be able to clamp any blank 2 within the hole diameter tolerance range, thus proving that the standard gripper 3 can clamp all blanks 2 in this batch. If the blank 2 can move in the opposite direction to the movement direction of the non-standard gripper 11, or in other words, the blank 2 can move towards the non-standard gripper 11, it indicates that the blank 2 is not fully clamped, thus proving that the standard gripper 3 cannot clamp all blanks 2 in this batch, and the on-site personnel need to take further action.

[0028] In this embodiment, the non-standard gripper 11 is used to clamp the blank 2. By judging and confirming that the blank 2 is clamped by the non-standard gripper 11 with reduced dimensions, it can be accurately confirmed that the batch of blanks 2 can also be clamped by the standard gripper 3. This method is simple and accurate.

[0029] In some embodiments, there is a thickness difference between the thickness of the non-standard gripper 11 and the thickness of the standard gripper 3 in the width direction of the blank 2, and this thickness difference is 1.25 times the hole diameter tolerance. In this case, the thickness of the non-standard gripper 11 is not too thin, and the non-standard gripper 11 will not deform when clamping the blank 2. Of course, in other embodiments, it can be 1.5 times or 2 times, etc.

[0030] In some embodiments of the present invention, the radially inner sidewall of the top opening 21 has a top blank clamping surface, and the radially inner sidewall of the bottom opening 22 has a bottom blank clamping surface. Step S3 further includes: the non-standard gripper 11 located above the blank 2 moves horizontally toward its corresponding top blank clamping surface; the non-standard gripper 11 located below the blank 2 moves horizontally toward its corresponding bottom blank clamping surface.

[0031] Specifically, in combination Figure 4The raw materials of the present invention will be described again. When the first base 12 reaches its limit stroke of value X, if the non-standard gripper 11 has already been pressed against the clamping surface of the top blank, then if the standard gripper 3 is used to replace the non-standard gripper 11, the standard gripper 3 will certainly be able to clamp against the clamping surface of the top blank, and the first base 12 does not need to reach its maximum stroke to be pressed against the clamping surface of the top blank, for example... Figure 4 The standard gripper 3 only needs to achieve a stroke of value Y (where Y is less than X) to clamp onto the top blank clamping surface. Furthermore, since the thinning of the non-standard gripper 11 relative to the standard gripper 3 is greater than or equal to the hole diameter tolerance, as long as the non-standard gripper 11 can clamp the blank 2, then any blank 2 within the hole diameter tolerance range can necessarily be clamped by the non-standard gripper 11. It should be emphasized that... Figure 4 This is merely an illustrative description of the principles of the present invention to facilitate understanding of the principles by those skilled in the art.

[0032] This invention provides a clamping mechanism 1, which includes a support device and a plurality of non-standard grippers 11. Some of the non-standard grippers 11 are installed above the top surface of the support device, and some of the non-standard grippers 11 are installed below the top surface of the support device. The non-standard grippers 11 located above the top surface of the support device can extend into the top opening 21 of the blank 2 from top to bottom, and the non-standard grippers 11 located below the top surface of the support device can extend into the bottom opening 22 of the blank 2. The non-standard grippers 11 are configured to be able to move in a limited manner along the vertical direction or the width direction of the support device. In the working state, the side of the non-standard gripper 11 used to press the blank 2 is thinned relative to the standard gripper 3, so that the thickness of the non-standard gripper 11 in the width direction of the blank 2 is less than the thickness of the standard gripper 3, and the thickness difference between the two thicknesses is greater than or equal to the diameter tolerance of the bottom opening 22 and the top opening 21 and less than the thickness value of the non-standard gripper 11.

[0033] Specifically, when the non-standard grippers 11 are inserted into the corresponding openings of the blank 2 and move towards the milling surface 23 of the blank 2, the non-standard grippers 11 stop moving horizontally when they reach their maximum horizontal stroke; or when the non-standard grippers 11 are horizontally clamped on the radial sidewall of their corresponding openings (top opening 21 or bottom opening 22), the non-standard grippers 11 stop moving horizontally. Then, a horizontal thrust opposite to the direction of movement of the non-standard grippers 11 is applied to the blank 2 to confirm whether the blank 2 can move in the opposite direction to the direction of movement of the non-standard grippers 11, thereby confirming whether the blank 2 is clamped. If the blank 2 can be clamped, it means that all blanks 2 in this batch can be clamped.

[0034] In this embodiment, the non-standard gripper 11 is used to clamp the blank 2. By judging and confirming that the blank 2 is clamped by the non-standard gripper 11 with reduced dimensions, it is accurately confirmed that the batch of blanks 2 can also be clamped by the standard gripper 3.

[0035] In some embodiments, the clamping mechanism 1 includes a first base 12 and a second base 13. The first base 12 is located above the top surface of the support device, and the second base 13 is located below the top surface of the support device. A non-standard gripper 11 located above the top surface of the support device is mounted on the bottom of the first base 12, and a non-standard gripper 11 located below the top surface of the support device is mounted on the top of the second base 13.

[0036] Specifically, the first base 12 and the second base 13 can each support a portion of the non-standard grippers 11. Of course, if all the non-standard grippers 11 are removed, the standard grippers 3 can be installed on the first base 12 and the second base 13.

[0037] In some embodiments, the clamping mechanism 1 further includes a first telescopic mechanism 14 and a second telescopic mechanism 15. The first telescopic mechanism 14 can drive the first base 12 to move in a limited manner along the width direction of the support device, and the second telescopic mechanism 15 can drive the second base 13 to move in a limited manner along the width direction of the support device.

[0038] Specifically, the first telescopic mechanism 14 can drive the first base 12 to move toward the milling surface 23 of the blank 2, thereby causing the non-standard gripper 11 on the first base 12 to move toward the milling surface 23 of the blank 2. The second telescopic mechanism 15 can drive the second base 13 to move toward the milling surface 23 of the blank 2, thereby causing the non-standard gripper 11 on the second base 13 to move toward the milling surface 23 of the blank 2. Due to the stroke of the first telescopic mechanism 14 and the second telescopic mechanism 15, the lateral stroke of the first base 12 and the second base 13 is limited. The first telescopic mechanism 14 and the second telescopic mechanism 15 can be telescopic devices such as electric push rods or hydraulic cylinders, and this invention is not limited to these. Of course, due to internal limitations of the equipment, the first telescopic mechanism 14 and the second telescopic mechanism 15 can only move to a limited extent, and the stroke is relatively short.

[0039] In some embodiments, the first telescopic mechanism 14 and the second telescopic mechanism 15 are disposed on the same side in the width direction of the support device.

[0040] Specifically, the first telescopic mechanism 14 and the second telescopic mechanism 15, which are located on the same side, can telescopically move synchronously, so that the first base 12 and the second base 13 can move synchronously. For example, when the first telescopic mechanism 14 and the second telescopic mechanism 15 pull the first base 12 and the second base 13 respectively, the non-standard gripper 11 moves toward the first telescopic mechanism 14 or the second telescopic mechanism 15, thereby causing the non-standard gripper 11 to move toward the direction of clamping the blank 2.

[0041] In some embodiments, the clamping mechanism 1 further includes a lifting mechanism 16, which is connected to the top of the first base 12 to drive the first base 12 to move vertically.

[0042] Specifically, the lifting mechanism 16 can drive the non-standard gripper 11 on the first base 12 to extend into the top opening 21 of the blank 2, and can also drive the non-standard gripper 11 on the first base 12 to leave the top opening 21 of the blank 2. The lifting mechanism 16 can be a telescopic device such as an electric push rod or a hydraulic cylinder, and the present invention is not limited thereto. Moreover, to ensure that the blank 2 has sufficient room for movement, the height of the first base 12 can be adjusted.

[0043] It should be noted that the second base 13 is typically configured to move only along the width direction of the blank 2, and the height of the second base 13 usually does not need to be adjusted. Of course, a lifting mechanism 16 can also be provided at the bottom of the second base 13.

[0044] The present invention also provides a blank processing device, which includes the above-mentioned clamping mechanism 1.

[0045] Specifically, the blank processing device may further include a blank transport device and a milling device. The blank transport device is used to transport the blank to a preset position, such as to the top surface of the support device. The milling device can perform milling processing on the milling surface 23 of the blank 2.

[0046] In this embodiment, the non-standard gripper 11 is used to clamp the blank 2. By determining whether the blank 2 is clamped by the non-standard gripper 11 with reduced dimensions, it is accurately confirmed that the batch of blanks 2 can also be clamped by the standard gripper 3. If the batch of blanks 2 is confirmed, the batch of blanks 2 can be milled by the milling equipment in the blank 2 processing device.

[0047] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A method for clamping and testing a blank (2) having a top portion with a plurality of top openings (21) spaced along the length of the blank (2) and a bottom portion with a plurality of bottom openings (22) spaced along the length of the blank (2), the top openings (21) and the bottom openings (22) having the same aperture size tolerance, one side of the blank (2) in the width direction being a milled surface (23), characterized in that, The method for clamping the blank includes the following steps: S1. The blank (2) is vertically installed at a preset position, and the multiple non-standard grippers (11) of the clamping mechanism (1) located below the blank (2) are inserted into the bottom opening (22) of the blank (2) one by one from bottom to top, and the multiple non-standard grippers (11) of the clamping mechanism (1) located above the blank (2) are inserted into the top opening (21) of the blank (2) one by one from top to bottom. In the working state, relative to the standard jaw, the side of the non-standard jaw (11) used to clamp the blank (2) is thinned in the direction away from the milling surface (23), so that the thickness difference between the non-standard jaw (11) and the standard jaw is greater than or equal to the hole diameter tolerance and less than the thickness value of the non-standard jaw (11). S2. Move all the non-standard grippers (11) horizontally toward the milling surface (23) of the blank (2), and stop moving horizontally when the non-standard grippers (11) reach the maximum stroke of horizontal movement or when they are horizontally clamped on the radial sidewall of the corresponding top opening or bottom opening. S3. Apply a horizontal thrust to the blank (2) in the opposite direction to the movement direction of the non-standard gripper (11) to confirm whether the blank (2) can move in the opposite direction to the movement direction of the non-standard gripper (11), and thus confirm whether the blank (2) is clamped.

2. The blank clamping test method according to claim 1, characterized in that, The thickness difference is 1.25 times the aperture size tolerance.

3. A clamping mechanism, characterized in that, It includes a support device and multiple non-standard grippers (11). Some of the non-standard grippers (11) are installed above the top surface of the support device, and some of the non-standard grippers (11) are installed below the top surface of the support device. The non-standard grippers (11) located above the top surface of the support device can extend into the top opening of the blank from top to bottom in a corresponding manner, and the non-standard grippers (11) located below the top surface of the support device can extend into the bottom opening of the blank in a corresponding manner. The non-standard gripper (11) is configured to be able to move in a limited manner along the vertical direction or the width direction of the support device; In the working state, the side of the non-standard gripper (11) used to clamp the blank is thinned relative to the standard gripper, so that the thickness of the non-standard gripper (11) in the width direction of the blank is less than the thickness of the standard gripper, and the thickness difference between the two thicknesses is greater than or equal to the hole diameter tolerance of the bottom opening and the top opening and less than the thickness value of the non-standard gripper (11).

4. The clamping mechanism according to claim 3, characterized in that, The clamping mechanism (1) includes a first base (12) and a second base (13). The first base (12) is located above the top surface of the support device, and the second base (13) is located below the top surface of the support device. The non-standard gripper (11) located above the top surface of the support device is installed at the bottom of the first base (12), and the non-standard gripper (11) located below the top surface of the support device is installed at the top of the second base (13).

5. The clamping mechanism according to claim 4, characterized in that, The clamping mechanism (1) further includes a first telescopic mechanism (14) and a second telescopic mechanism (15). The first telescopic mechanism (14) can drive the first base (12) to move in a limited manner along the width direction of the support device, and the second telescopic mechanism (15) can drive the second base (13) to move in a limited manner along the width direction of the support device.

6. The clamping mechanism according to claim 5, characterized in that, The first telescopic mechanism (14) and the second telescopic mechanism (15) are located on the same side in the width direction of the support device.

7. The clamping mechanism according to claim 6, characterized in that, The clamping mechanism (1) further includes a lifting mechanism (16), which is connected to the top of the first base (12) to drive the first base (12) to move vertically.

8. A blank processing device, characterized in that, Includes the clamping mechanism according to any one of claims 3-7.

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