Blank piece clamping test method, clamping mechanism and blank piece machining device

Abstract

The invention relates to the technical field of clamps, in particular to a blank clamping test method, a clamping mechanism and a blank machining device. The blank clamping test method comprises the following steps: S1, mounting a blank at a preset position, enabling a plurality of non-standard clamping jaws to extend into a bottom opening of the blank, and enabling a plurality of non-standard clamping jaws to extend into a top opening of the blank; s2, enabling all the non-standard clamping jaws to horizontally move towards the milling surface of the blank, and stopping horizontal movement when the non-standard clamping jaws reach the maximum stroke of horizontal movement or are horizontally clamped on the radial side walls of the corresponding open holes; and S3, horizontal thrust opposite to the moving direction of the non-standard clamping jaw is applied to the blank piece so as to confirm whether the blank piece can move in the direction opposite to the moving direction of the non-standard clamping jaw or not, and then whether the blank piece is clamped or not is confirmed. The invention aims to solve the problem that it is difficult to accurately confirm that all blanks can be clamped by a standard clamping jaw in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, and in particular to a blank clamping test method, a clamping mechanism and a blank processing device. Background Art

[0002] Some mechanical equipment has a small internal space, which results in a limited range of movement of the clamping mechanism installed inside, that is, the maximum travel range of the clamping mechanism is small. Due to differences in blank batches and manufacturers, the dimensional variation between different blanks is large. When the mechanical equipment processes the blank, even if the clamping mechanism reaches the maximum travel, the standard clamping jaws of the clamping mechanism may still not be in contact with the blank, resulting in the blank being unable to be clamped. Therefore, in order to ensure the processing quality, it is necessary to confirm that the batch of blanks can be clamped by the standard clamping jaws of the clamping mechanism before processing.

[0003] At present, the judgment is usually made through the first piece confirmation method, that is, if the first blank of a batch can be clamped by the standard clamp, it is considered that all blanks in this batch can be clamped by the standard clamp. However, in fact, the dimensional variation between different blanks may be large, and the fact that the first piece can be clamped by the standard clamp does not mean that all blanks can be clamped. Summary of the invention

[0004] The purpose of the present 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 clamping jaws.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a method for clamping and testing a blank, wherein the top of the blank is provided with a plurality of top openings spaced apart along its length direction, and the bottom of the blank is provided with a plurality of bottom openings spaced apart along its length direction; the top openings and the bottom openings have the same aperture size tolerance, and one side surface in the width direction of the blank is a milling processing surface, wherein the method for clamping and testing a blank comprises the following steps: S1, vertically installing the blank at a preset position, and making a plurality of non-standard clamping jaws of the clamping mechanism located below the blank extend one-to-one from bottom to top into the bottom opening of the blank, and making a plurality of 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 aperture size tolerance and less than the thickness value of the non-standard jaws; S2, all non-standard jaws are moved horizontally toward the milling surface of the blank, and the non-standard jaws stop moving horizontally when they reach the maximum stroke of the horizontal movement or are horizontally clamped on the radial side wall of the opening corresponding to them; S3, a horizontal thrust opposite to the moving direction of the non-standard jaws is applied to the blank to confirm whether the blank can move in the direction opposite to the moving direction of the non-standard jaws, and then confirm whether the blank is clamped.

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

[0007] The present invention also provides a clamping mechanism, which includes a supporting device and a plurality of non-standard jaws, wherein a portion of the non-standard jaws are installed above the top surface of the supporting device, and a portion of the non-standard jaws are installed below the top surface of the supporting device, the non-standard jaws located above the top surface of the supporting device can be extended one-to-one from top to bottom into the top opening of the blank, and the non-standard jaws located below the top surface of the supporting device can be extended one-to-one into the bottom opening of the blank; the non-standard jaws are arranged to be able to move limitedly along the vertical direction or the width direction of the supporting device; wherein, in a working state, relative to the standard jaws, one side of the non-standard jaws used for clamping the blank is thinned so that the thickness of the non-standard jaws in the width direction of the blank is less than the thickness of the standard jaws, and the thickness difference between the two thicknesses is greater than or equal to the aperture size tolerance of the bottom opening and the top opening and is less than the thickness value of the non-standard jaws.

[0008] In some embodiments, the clamping mechanism includes a first base and a second base, the first base is located above the top surface of the support device, the second base is located below the top surface of the support device, the non-standard clamp located above the top surface of the support device is installed at the bottom of the first base, and the non-standard clamp located below the top surface of the support device is installed at 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 can drive the first base to move limitedly along the width direction of the support device, and the second telescopic mechanism can drive the second base to move limitedly 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 supporting device.

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

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

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

[0014] When the non-standard jaws stop moving, all the non-standard jaws may be pressed against the radial side wall of the opening, so that the blank is clamped; or only a small number of non-standard jaws may not be pressed against the radial side wall of the opening (i.e., the top opening or the bottom opening), so that the blank is not completely clamped. Apply a horizontal thrust to the blank in the opposite direction of the movement of the non-standard jaws, that is, apply a force toward the non-standard jaws. Of course, a sufficiently large force can be applied mechanically or manually. If the blank cannot move in the direction opposite to the movement of the non-standard jaws, or the blank cannot move toward the non-standard jaws, it means that the blank is clamped. Furthermore, since the non-standard jaws are thinner than the standard jaws by a thickness value at least equal to the aperture size tolerance value, if the non-standard jaws can still clamp the blank, the standard jaws thicker than the non-standard jaws must be able to clamp any blank within the aperture size tolerance range, thereby proving that the standard jaws can clamp all blanks in this batch. If the blank can move in the direction opposite to that of the non-standard jaws, or in other words, the blank can move toward the non-standard jaws, it means that the blank is not fully clamped, which further proves that the standard jaws cannot clamp all the blanks in this batch, and the on-site staff needs to take further action. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0018] Figure 4 Schematic diagram comparing the clamping between non-standard jaws and standard jaws.

[0019] Description of Reference Numerals

[0020] 1. Clamping mechanism; 11. Non-standard clamping jaws; 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. Milling surface; 3. Standard clamping jaws. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention, rather than to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present 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 the length direction thereof, and the bottom of the blank 2 is provided with a plurality of bottom openings 22 spaced apart along the length direction thereof; all the top openings 21 and all the bottom openings 22 have the same aperture size tolerance, and one side surface in the width direction of the blank 2 is a milling surface 23. If the blank 2 needs to be clamped, the standard clamping jaw 3 needs to be extended 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, the standard clamping jaw 3 is moved in the direction of the milling surface 23, so that the standard clamping jaw 3 can be clamped on the radial side wall of the opening (i.e., the top opening 21 and the bottom opening 22). However, due to the limited horizontal movement of the clamping mechanism, when the standard clamping jaw 3 is moved to the maximum stroke, if the standard clamping jaw 3 is not pressed against the radial side wall of the opening, that is, there is a gap between the standard clamping jaw 3 and the radial side wall of the opening, the standard clamping jaw 3 cannot be pressed against the blank 2. For the same batch of blanks 2, the aperture size of the opening (i.e., the top opening 21 and the bottom opening 22) of each blank 2 may be very different. If only one blank 2 is tested by the standard clamping jaw 3, it is impossible to infer whether the other blanks 2 can be clamped.

[0023] like Figure 1 to Figure 2As shown, the present invention provides a method for clamping and testing a blank, which comprises the following steps: S1, vertically installing the blank 2 at a preset position, and making a plurality of non-standard clamping jaws 11 of the clamping mechanism 1 located below the blank 2 extend one by one from bottom to top into the bottom opening 22 of the blank 2, and making a plurality of non-standard clamping jaws 11 of the clamping mechanism 1 located above the blank 2 extend 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 clamping jaw 3, one side of the non-standard clamping jaw 11 for clamping the blank 2 is thinned in the direction away from the milling processing surface 23 , so that the thickness difference between the non-standard jaws 11 and the standard jaws 3 is greater than or equal to the aperture size tolerance and less than the thickness value of the non-standard jaws 11; S2, all non-standard jaws 11 are moved horizontally toward the milling surface 23 of the blank 2, and the non-standard jaws 11 stop moving horizontally when they reach the maximum stroke of horizontal movement or are horizontally clamped on the radial side wall of the corresponding top opening or bottom opening; S3, a horizontal thrust is applied to the blank 2 in the opposite direction to the moving direction of the non-standard jaws 11 to confirm whether the blank 2 can move in the direction opposite to the moving direction of the non-standard jaws 11, and then confirm whether the blank 2 is clamped.

[0024] Specifically, in step S1, Figure 1 As shown, a part of the non-standard jaws 11 is located below the preset position, and another part of the non-standard jaws 11 is 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 jaws 11 below the preset position, that is, a part of the non-standard jaws 11 extends from bottom to top into the bottom opening 22 of the blank 2 one by one. At this time, the part of the non-standard jaws 11 extends to the center position of the bottom opening 22 and does not contact the radial side wall of the bottom opening 22. The other part of the non-standard jaws 11 located above the preset position moves downward, and these non-standard jaws 11 extend into the top opening 21 of the blank 2. At this time, the part of the non-standard jaws 11 extends to the center position of the top opening 21 and does not contact the radial side wall of the top opening 21.

[0025] It should be noted that the non-standard jaw 11 is processed from the standard jaw 3, or the non-standard jaw 11 is an imitation of the standard jaw 3, so the various parts of the standard jaw 3 and the non-standard jaw correspond one to one, so that the two can be used interchangeably in the clamping mechanism 1 at any time. Installing the standard jaw 3 can be used to process the blank 2, and installing the non-standard jaw 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 jaw 11 is smaller than that of the standard jaw 3. In other words, if Figure 3 and Figure 4As shown, the non-standard jaw 11 is thinned on the basis of the standard jaw 3, and the thinned portion is the portion of the non-standard jaw 11 used to clamp the radial side wall of the opening. In other words, if the non-standard jaw and the standard jaw 3 extend into the same position at the center of the same opening, the distance between the non-standard jaw 11 and the clamped surface in the opening is larger than the distance between the standard jaw 3 and the clamped surface in the opening. For example, assuming that the aperture size tolerance of the opening of the blank 2 is Acm, the thickness of the non-standard jaw 11 is Bcm, the thickness of the standard jaw 3 is Ccm, and the non-standard jaw 11 is thinned by a dimension Dcm relative to the standard jaw 3 (e.g. Figure 3 ), wherein 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 thinned dimension of the non-standard clamping jaw 11 relative to the standard clamping jaw 3 is less than half of the thickness value of the non-standard clamping jaw 11, that is, the value D is less than 0.5 times the value B.

[0026] Specifically, in step S2, if Figure 2 As shown, all the non-standard clamping jaws 11 move in the direction of clamping the blank 2, for example, the non-standard clamping jaws 11 move toward the milling surface 23 of the blank 2, so that the non-standard clamping jaws 11 can be pressed against the radial side wall of the opening (i.e., the top opening 21 or the bottom opening 22) in the direction toward 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 the travel, even if the non-standard clamping jaws 11 are not pressed against the radial side wall of the opening, the non-standard clamping jaws 11 will stop moving horizontally. However, when the non-standard clamping jaws 11 are pressed against the radial side wall of the opening, the non-standard clamping jaws 11 are blocked and cannot continue to move horizontally, so the non-standard clamping jaws 11 will also stop moving horizontally.

[0027] In step S3, after the non-standard jaws 11 stop moving, all the non-standard jaws 11 may be pressed against the radial side wall of the opening, so that the blank 2 is clamped; or only a small number of non-standard jaws 11 are not pressed against the radial side wall of the opening (i.e., the top opening 21 or the bottom opening 22), so that the blank 2 is not completely clamped. Apply a horizontal thrust to the blank 2 in the opposite direction of the movement of the non-standard jaws 11, that is, apply a force toward the non-standard jaws 11, and of course, a sufficiently large force can be applied mechanically or manually. If the blank 2 cannot move in the direction opposite to the movement direction of the non-standard jaws 11, or the blank 2 cannot move toward the non-standard jaws 11, it means that the blank 2 is clamped. Furthermore, since the non-standard jaws 11 are thinner than the standard jaws 3 by at least a thickness value equal to the aperture size tolerance, if the non-standard jaws 11 can still clamp the blank 2, the standard jaws 3, which are thicker than the non-standard jaws 11, must be able to clamp any blank 2 within the aperture size tolerance range, thereby proving that the standard jaws 3 can clamp all blanks 2 of the batch. If the blank 2 can move in the direction opposite to the direction of movement of the non-standard jaws 11, or if the blank 2 can move toward the non-standard jaws 11, it means that the blank 2 is not completely clamped, thereby proving that the standard jaws 3 cannot clamp all blanks 2 of the batch, and the on-site staff needs to take further action.

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

[0029] In some embodiments, there is a thickness difference between the thickness of the non-standard clamping jaw 11 and the thickness of the standard clamping jaw 3 in the width direction of the blank 2, and the thickness difference is 1.25 times the hole size tolerance. At this time, the thickness of the non-standard clamping jaw 11 will not be too thin, and the non-standard clamping jaw 11 will not be deformed 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 radial inner sidewall of the top opening 21 has a top blank clamping surface, and the radial inner sidewall of the bottom opening 22 has a bottom blank clamping surface. Step S3 further includes: the non-standard clamping jaw 11 located above the blank 2 moves horizontally toward the top blank clamping surface corresponding thereto; the non-standard clamping jaw 11 located below the blank 2 moves horizontally toward the bottom blank clamping surface corresponding thereto.

[0031] Specific, combined Figure 4The raw material of the present invention is described again. When the first base 12 reaches the limit stroke of value X, if the non-standard clamping jaw 11 has been pressed onto the clamping surface of the top blank, then if the non-standard clamping jaw 11 is replaced by the standard clamping jaw 3, the standard clamping jaw 3 can certainly be clamped onto the clamping surface of the top blank, and the first base 12 can be pressed onto the clamping surface of the top blank without reaching the maximum stroke, for example Figure 4 The standard clamp 3 only needs to achieve a stroke of value Y (value Y is less than value X) to be pressed against the top blank clamping surface. Moreover, since the value of the non-standard clamp 11 thinning compared to the standard clamp 3 is greater than or equal to the aperture size tolerance of the opening, as long as the non-standard clamp 11 can clamp the blank 2, then any blank 2 within the aperture size tolerance range can be clamped by the non-standard clamp 11. It should be emphasized that Figure 4 The principles of the present invention are merely schematically illustrated to facilitate those skilled in the art to understand the principles of the present invention.

[0032] The present invention provides a clamping mechanism 1, which includes a supporting device and a plurality of non-standard clamping jaws 11, wherein a portion of the non-standard clamping jaws 11 is installed above the top surface of the supporting device, and a portion of the non-standard clamping jaws 11 is installed below the top surface of the supporting device, the non-standard clamping jaws 11 located above the top surface of the supporting device can be extended one-to-one from top to bottom into the top opening 21 of the blank 2, and the non-standard clamping jaws 11 located below the top surface of the supporting device can be extended one-to-one into the bottom opening 22 of the blank 2; the non-standard clamping jaws 11 are configured to be able to move limitedly along the vertical direction or the width direction of the supporting device; wherein, in a working state, relative to the standard clamping jaw 3, a side of the non-standard clamping jaw 11 for clamping the blank 2 is thinned so that the thickness of the non-standard clamping jaw 11 in the width direction of the blank 2 is less than the thickness of the standard clamping jaw 3, and the thickness difference between the two thicknesses is greater than or equal to the aperture size tolerance of the bottom opening 22 and the top opening 21 and is less than the thickness value of the non-standard clamping jaw 11.

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

[0034] In this embodiment, the non-standard clamping jaws 11 are operated to clamp the blank 2, and it is confirmed by judging that the blank 2 is clamped by the non-standard clamping jaws 11 with reduced size, thereby accurately confirming that the batch of blanks 2 can also be clamped by the standard clamping jaws 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 supporting device, the second base 13 is located below the top surface of the supporting device, the non-standard clamping jaw 11 located above the top surface of the supporting device is installed at the bottom of the first base 12, and the non-standard clamping jaw 11 located below the top surface of the supporting device is installed at the top of the second base 13.

[0036] Specifically, the first base 12 and the second base 13 can respectively carry a part of the non-standard clamping jaws 11. Of course, if all the non-standard clamping jaws 11 are removed, the standard clamping jaws 3 can also 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 limitedly along the width direction of the support device, and the second telescopic mechanism 15 can drive the second base 13 to move limitedly 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 driving the non-standard clamping jaws 11 on the first base 12 to move toward the milling surface 23 of the blank 2, and the second telescopic mechanism 15 can drive the second base 13 to move toward the milling surface 23 of the blank 2, thereby driving the non-standard clamping jaws 11 on the second base 13 to move toward the milling surface 23 of the blank 2. Affected by 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 the present invention does not limit this. Of course, due to internal reasons of the equipment, the first telescopic mechanism 14 and the second telescopic mechanism 15 can only move to a limited extent, and the moving 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 supporting device.

[0040] Specifically, the first telescopic mechanism 14 and the second telescopic mechanism 15 disposed on the same side can be telescopically moved 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 clamping jaw 11 moves toward the first telescopic mechanism 14 or the second telescopic mechanism 15, and then the non-standard clamping jaw 11 moves 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 so as to drive the first base 12 to move vertically.

[0042] Specifically, the lifting mechanism 16 can drive the non-standard clamping claw 11 on the first base 12 to extend into the top opening 21 of the blank 2, and can also drive the non-standard clamping claw 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 does not limit it. In addition, in order to ensure that the blank 2 has enough moving space, the first base 12 can adjust the height.

[0043] It should be noted that the second base 13 is usually arranged 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 arranged at the bottom of the second base 13.

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

[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 may perform milling on the milling surface 23 of the blank 2.

[0046] In this embodiment, the non-standard clamping jaws 11 are operated to clamp the blank 2, and it is determined that the blank 2 is clamped by the non-standard clamping jaws 11 with reduced size, thereby accurately confirming that the batch of blanks 2 can also be clamped by the standard clamping jaws 3. If the batch of blanks 2 is confirmed, the batch of blanks 2 can be milled by the milling processing 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 used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, 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 improvement, should be regarded as the protection scope of the present invention.

Claims

1. A method for clamping and testing a blank, wherein the top of the blank (2) is provided with a plurality of top openings (21) spaced apart along its length direction, and the bottom of the blank (2) is provided with a plurality of bottom openings (22) spaced apart along its length direction; the top openings (21) and the bottom openings (22) have the same aperture size tolerance, and one side surface of the blank (2) in the width direction is a milling surface (23), characterized in that: The blank clamping test method comprises the following steps: S1, vertically installing the blank (2) at a preset position, and making the multiple non-standard clamping jaws (11) of the clamping mechanism (1) located below the blank (2) extend one by one from bottom to top into the bottom opening (22) of the blank (2), and making the multiple non-standard clamping jaws (11) of the clamping mechanism (1) located above the blank (2) extend one by one from top to bottom into the top opening (21) of the blank (2); Wherein, in a working state, relative to a standard clamping jaw, a side of the non-standard clamping jaw (11) for pressing the blank (2) is thinned in a direction away from the milling surface (23), so that the thickness difference between the non-standard clamping jaw (11) and the standard clamping jaw is greater than or equal to the hole size tolerance and less than the thickness value of the non-standard clamping jaw (11); S2, moving all the non-standard clamping jaws (11) horizontally toward the milling surface (23) of the blank (2), and stopping the horizontal movement of the non-standard clamping jaws (11) when reaching the maximum stroke of the horizontal movement or when being horizontally clamped on the radial side wall of the corresponding top opening or bottom opening; S3. Apply a horizontal thrust to the blank (2) in the opposite direction to the moving direction of the non-standard clamp (11) to confirm whether the blank (2) can move in the direction opposite to the moving direction of the non-standard clamp (11), and further 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 comprises a support device and a plurality of non-standard clamping jaws (11), wherein a part of the non-standard clamping jaws (11) are installed above the top surface of the support device, and a part of the non-standard clamping jaws (11) are installed below the top surface of the support device, and the non-standard clamping jaws (11) located above the top surface of the support device can extend one-to-one from top to bottom into the top opening of the blank, and the non-standard clamping jaws (11) located below the top surface of the support device can extend one-to-one from top to bottom into the bottom opening of the blank; The non-standard clamping jaw (11) is configured to be able to perform limited movement vertically or in the width direction of the supporting device; Wherein, in the working state, relative to the standard clamping jaw, the side of the non-standard clamping jaw (11) used for pressing the blank is thinned so that the thickness of the non-standard clamping jaw (11) in the width direction of the blank is less than the thickness of the standard clamping jaw, and the thickness difference between the two thicknesses is greater than or equal to the aperture size tolerance of the bottom opening and the top opening and is less than the thickness value of the non-standard clamping jaw (11).

4. The clamping mechanism according to claim 3, characterized in that: The clamping mechanism (1) comprises a first base (12) and a second base (13), wherein the first base (12) is located above the top surface of the supporting device, and the second base (13) is located below the top surface of the supporting device, and the non-standard clamping jaw (11) located above the top surface of the supporting device is installed at the bottom of the first base (12), and the non-standard clamping jaw (11) located below the top surface of the supporting 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 comprises a first telescopic mechanism (14) and a second telescopic mechanism (15), wherein the first telescopic mechanism (14) is capable of driving the first base (12) to move limitedly along the width direction of the supporting device, and the second telescopic mechanism (15) is capable of driving the second base (13) to move limitedly along the width direction of the supporting device.

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

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

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

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