Clamping device

Abstract

The invention discloses a clamping device which is suitable for clamping a workpiece to be machined. The clamping device comprises a first mounting plate, a second mounting plate, a positioning block and a backup plate; the first mounting plate and the second mounting plate are suitable for fixing a to-be-machined workpiece in a first direction in the process of machining the to-be-machined workpiece; the positioning block and the backup plate are suitable for fixing the to-be-machined workpiece in a second direction and a third direction in the process of machining the to-be-machined workpiece, the second direction and the third direction are located on the same clamping plane, and the first direction is perpendicular to the clamping plane; the positioning block and the backup plate are respectively arranged on the first surface of the first mounting plate; the positioning block is provided with an abutting face, the abutting face is sunken in the direction away from the backup plate, and the abutting face abuts against the workpiece to be machined. Through cooperation of the first mounting plate and the second mounting plate and cooperation of the positioning block and the backup plate, fixation of special-shaped workpieces such as workpieces to be machined is achieved, the difficulty of fixing the special-shaped workpieces is lowered, and follow-up machining of the special-shaped workpieces is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and in particular to a clamping device. Background Art

[0002] The boiler is provided with many pipes. Some of the pipes are fixed by a pipe fixing device. The pipe fixing device is composed of a suspension pipe and a plurality of support blocks. Specifically, the plurality of support blocks are spaced along the length direction of the suspension pipe, and the plurality of support blocks are welded to the surface of the suspension pipe. A clamping opening is provided on one side of the support block for clamping and fixing the pipe.

[0003] See also Figure 1-2 As shown, the specific manufacturing process of the above-mentioned pipeline fixing device is: laser cutting the contour of the material block to obtain the workpiece 8b to be processed (such as Figure 1 Fix the workpiece 8b to be processed, and perform machining (i.e. groove processing) on ​​the processing area 84 of the workpiece 8b to be processed to obtain a support block 8a with a groove (such as Figure 2 As shown); the groove of the support block 8a is welded to the suspension pipe to obtain a pipeline fixing device.

[0004] Since the shape of the workpiece 8b to be processed is complex (such as Figure 1 As shown). When machining the groove, it is difficult to fix the workpiece 8b with a conventional clamping tool, such as a bench vise. The bench vise can only clamp the two sides of the workpiece 8b to be machined in one direction, but cannot effectively fix the workpiece 8b to be machined in other directions, which may cause the workpiece 8b to be machined to move when the machining area 84 of the workpiece 8b is subsequently machined, increasing the difficulty of machining. The existing fixture cannot meet the fixing requirements of special-shaped workpieces of the structure of the workpiece 8b to be machined, and it is not convenient to perform subsequent machining on such special-shaped workpieces. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing special-shaped workpieces are difficult to fix and are not convenient for subsequent machining.

[0006] The present invention discloses a clamping device, which is suitable for clamping a workpiece to be processed. The clamping device comprises: a first mounting plate, a second mounting plate, a positioning block and a support plate; The first mounting plate and the second mounting plate are suitable for fixing the workpiece to be processed in a first direction during processing of the workpiece to be processed; The positioning block and the support plate are suitable for fixing the workpiece to be processed in a second direction and a third direction during processing of the workpiece to be processed, the second direction and the third direction are in the same clamping plane, and the first direction is perpendicular to the clamping plane; The positioning block and the backing plate are respectively arranged on the first surface of the first mounting plate; The positioning block has a supporting surface, the supporting surface is recessed in the direction away from the supporting plate, the supporting surface is against the workpiece to be processed, the supporting surface has a first mating surface, a second mating surface and a third mating surface, the first mating surface and the third mating surface are connected through the second mating surface, the first mating surface, the second mating surface and the third mating surface are respectively in contact with the first surface of the first mounting plate, the angle between the first mating surface and the second mating surface is less than 180°, and the angle between the second mating surface and the third mating surface is less than 180°. Through the cooperation between the first mounting plate and the second mounting plate, and the cooperation between the positioning block and the supporting plate, the fixing of the special-shaped workpiece of the structure such as the workpiece to be processed is realized, and the difficulty of fixing the special-shaped workpiece is reduced, so that the special-shaped workpiece can be subsequently machined.

[0007] Optionally, a clearance opening is provided between the first mating surface and the second mating surface, and / or the clearance opening is provided between the second mating surface and the third mating surface, and the clearance opening is suitable for avoiding sharp corners on the workpiece to be processed. The above solution is adopted to effectively avoid burrs and flash at the sharp corners of the workpiece to be processed.

[0008] Optionally, a clamping opening is provided on the workpiece to be processed; an avoidance groove is provided on the first mounting plate and / or the second mounting plate, and the position of the avoidance groove matches the position of the edge of the clamping opening when the workpiece to be processed is fixed on the first mounting plate. The above solution can effectively avoid burrs and flash on the edge of the clamping opening.

[0009] Optionally, the width of the avoidance groove is 1 mm to 3 mm. With this groove width, burrs and flashes on the edge of the clamping opening can be effectively avoided without affecting the fixing of the first mounting plate and the second mounting plate on the workpiece to be processed in the first direction.

[0010] Optionally, the distance between the positioning block and the backing plate is adjustable, and the backing plate is a movable backing plate. With the above solution, the distance between the backing plate and the positioning block can be adjusted by adjusting the position of the backing plate, thereby matching workpieces to be processed of different specifications.

[0011] Optionally, the support plate is provided with a waist-shaped hole, the waist-shaped hole extending in a direction away from the workpiece to be processed; a fixing bolt is sleeved in the waist-shaped hole, and the fixing bolt is threadedly connected to the first mounting plate. The above solution is adopted to achieve the adjustment of the support plate position.

[0012] Optionally, the clamping device further comprises: an insert and a tightening bolt; The backing plate is slidably disposed on the first surface of the first mounting plate; The insert is fixed on the first mounting plate, and the insert is located on a first side of the backing plate, and the first side of the backing plate is a side away from the positioning block; The abutting bolt extends in a direction away from the workpiece to be processed, and the abutting bolt is threadedly connected to the insert and abuts against the first side of the support plate. The above solution effectively prevents the support plate from accidentally sliding.

[0013] Optionally, the clamping device further comprises: a nut; The nut is screwed onto the abutting bolt and abuts against the insert. The above solution is adopted to effectively fix the screw rod of the abutting bolt, thereby preventing the abutting bolt from loosening due to vibration.

[0014] Optionally, the thickness of the positioning block is smaller than the thickness of the workpiece to be processed. The above solution effectively prevents interference between the positioning block and the second mounting plate, thereby enabling the first mounting plate and the second mounting plate to effectively fix the workpiece 8b to be processed in the first direction.

[0015] Optionally, the positioning block is a mirror-symmetrical structure; there are two support plates, which are arranged in a mirror-image manner and distributed on both sides of the positioning block. The above solution is adopted to improve the working efficiency of the clamping device.

[0016] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the cooperation between the first mounting plate and the second mounting plate, and the cooperation between the positioning block and the support plate, the special-shaped workpiece of the structure to be processed is fixed, and the difficulty of fixing the special-shaped workpiece is reduced, so that the special-shaped workpiece can be subsequently machined; By adjusting the position of the backing plate, the distance between the backing plate and the positioning block can be adjusted to match workpieces of different specifications.

[0017] The above description of the disclosed contents and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and to provide a further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the workpiece to be processed; Figure 2 It is a structural schematic diagram of the workpiece to be processed after being processed into a support block; Figure 3 It is a schematic diagram of the structure of the clamping device in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping device holding the support block in the present invention; Figure 5 This is a front view of the clamping bracket of the clamping device in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure in which the support block is fixed on the first mounting plate in the present invention; Figure 7 It is a partial structural schematic diagram of the clamping device in the present invention; Figure 8 It is a front view of the first mounting plate and the positioning block in the present invention.

[0020] Description of Figure Numbers: 1. First mounting plate; 11. Avoidance groove; 2. Second mounting plate; 3. Positioning block; 31. First mating surface; 32. Second mating surface; 33. Third mating surface; 34. Avoidance opening; 4. Backing plate; 41. Waist-shaped hole; 42. Fixing bolt; 5. Insert; 6. Tightening bolt; 7. Nut; 8a. Support block; 8b. Workpiece to be processed; 81. First connecting surface; 82. Second connecting surface; 83. Clamping opening; 84. Area to be processed. DETAILED DESCRIPTION

[0021] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0024] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0025] The present application discloses a clamping device suitable for clamping a workpiece 8b to be processed.

[0026] In this embodiment, please refer to Figure 1-2 As shown, the workpiece 8b to be processed has a first side and a second side relative to each other, and a third side and a fourth side relative to each other. Among them, the second side of the workpiece 8b to be processed is provided with a first connecting surface 81, a second connecting surface 82 and a clamping port 83. The first connecting surface 81 is close to the third side of the workpiece 8b to be processed. The second connecting surface 82 is close to the fourth side of the workpiece 8b to be processed. The clamping port 83 is arranged between the first connecting surface 81 and the second connecting surface 82, and is used to fix the outer wall of the pipe. The angle between the first connecting surface 81 and the second connecting surface 82 is less than 180°. The third side of the workpiece 8b to be processed is a processing area 84, which is used for groove processing. After the processing area 84 of the workpiece 8b to be processed is grooved, the support block 8a can be obtained. A sharp angle is arranged between the third side of the workpiece 8b to be processed and the second connecting surface 82.

[0027] See also Figure 3 to Figure 5 As shown, the clamping device includes a first mounting plate 1, a second mounting plate 2, a positioning block 3 and a backing plate 4. The first mounting plate 1 and the second mounting plate 2 are suitable for fixing the workpiece 8b to be processed in the first direction during the processing of the workpiece 8b to be processed. The positioning block 3 and the backing plate 4 are suitable for fixing the workpiece 8b to be processed in the second direction and the third direction during the processing of the workpiece 8b to be processed. The second direction and the third direction are in the same clamping plane. The first direction is perpendicular to the clamping plane.

[0028] In this embodiment, the thickness direction of the first mounting plate 1 is the first direction, the length direction of the first mounting plate 1 is the second direction, and the height direction of the first mounting plate 1 is the third direction.

[0029] In this embodiment, the clamping device is assembled on a bench vise. Specifically, the bench vise includes a first clamp body and a second clamp body, and a mounting plate jaw is formed between the first clamp body and the second clamp body. The first mounting plate 1 is arranged on a side of the first clamp body facing the second clamp body. The second mounting plate 2 is arranged on a side of the second clamp body facing the first clamp body. The clamping device realizes the opening and closing of the second mounting plate 2 and the first mounting plate 1 by opening and closing the first clamp body and the second clamp body.

[0030] See also Figure 6 to Figure 8 As shown, the positioning block 3 and the backing plate 4 are respectively arranged on the first surface of the first mounting plate 1. The positioning block 3 and the backing plate 4 are distributed on the first side and the second side of the workpiece 8b to be processed. The positioning block 3 has a backing surface. The backing surface is recessed in the direction away from the backing plate 4. The backing surface is against the workpiece 8b to be processed. The backing surface has a first mating surface 31, a second mating surface 32 and a third mating surface 33. The first mating surface 31 and the third mating surface 33 are connected through the second mating surface 32. The first mating surface 31, the second mating surface 32 and the third mating surface 33 are respectively in contact with the first surface of the first mounting plate 1. The angle between the first mating surface 31 and the second mating surface 32 is less than 180°. The angle between the second mating surface 32 and the third mating surface 33 is less than 180°.

[0031] In this embodiment, the abutting surface abuts against the second side and the third side of the workpiece 8b to be processed. The backing plate 4 has a first side and a second side opposite to each other. The first side of the backing plate 4 is a side away from the positioning block 3. When the clamping device clamps and fixes the workpiece 8b to be processed, the first mating surface 31 abuts against the first connecting surface 81; the second mating surface 32 abuts against the second connecting surface 82; the third mating surface 33 abuts against the fourth side of the workpiece 8b to be processed; and the second side of the backing plate 4 abuts against the first side of the workpiece 8b to be processed.

[0032] Further, in this embodiment, the angle between the first mating surface 31 and the second mating surface 32 is 150° to 170°, and the angle between the second mating surface 32 and the third mating surface 33 is 80° to 100°. The angle between the second side of the backing plate 4 and the horizontal direction is 60° to 80°. Preferably, the angle between the first mating surface 31 and the second mating surface 32 is 160°, and the angle between the second mating surface 32 and the third mating surface 33 is 90°. The angle between the second side of the backing plate 4 and the horizontal direction is 70°.

[0033] Furthermore, in order to ensure that the first mounting plate 1 and the second mounting plate 2 effectively fix the workpiece 8b to be processed in the first direction, the thickness of the positioning block 3 is smaller than the thickness of the workpiece 8b to be processed, that is, there will be no interference between the positioning block 3 and the second mounting plate 2.

[0034] In this embodiment, the contour of the workpiece 8b to be processed is made by laser cutting. The workpiece made by laser cutting may have burrs on one side, so the contour of one side of the workpiece 8b to be processed may have burrs and burrs. The workpiece 8b to be processed is provided with a sharp corner, and a large number of burrs may exist at the sharp corner, thereby affecting the fixation of the positioning block 3 and the support plate 4 to the workpiece 8b to be processed, and it is impossible to ensure that the support surface of the positioning block 3 effectively fits the side wall of the workpiece 8b to be processed.

[0035] Therefore, please refer to Figure 7-Figure 8 As shown, in order to effectively avoid burrs and flashes at some sharp corners of the workpiece 8b to be processed, an avoidance opening 34 is opened on the abutting surface. The distribution of the avoidance opening 34 includes three situations: situation 1, the avoidance opening 34 is set between the first mating surface 31 and the second mating surface 32; situation 2, the avoidance opening 34 is set between the second mating surface 32 and the third mating surface 33; situation 3, there are two avoidance openings 34, one avoidance opening 34 is set between the first mating surface 31 and the second mating surface 32, and the other avoidance opening 34 is set between the second mating surface 32 and the third mating surface 33.

[0036] In this embodiment, the avoidance opening 34 is arranged between the second mating surface 32 and the third mating surface 33, and is used to avoid the sharp corner between the third side of the workpiece 8b to be processed and the second connecting surface 82, thereby effectively preventing burrs at the sharp corner from interfering with the fixation of the workpiece 8b to be processed by the clamping device.

[0037] In this embodiment, the clamping opening 83 of the workpiece 8b to be processed is an arc-shaped opening. The edge of the clamping opening 83 may have burrs, which further affects the fixing of the first mounting plate 1 and the second mounting plate 2 to the workpiece 8b to be processed in the first direction.

[0038] Therefore, in order to effectively avoid burrs and flashes on the edge of the clamping opening 83, an avoidance groove 11 is provided on the clamping device. The position of the avoidance groove 11 matches the position of the edge of the clamping opening 83 when the workpiece 8b to be processed is fixed on the first mounting plate 1. The distribution of the avoidance groove 11 includes three situations: situation 1, the avoidance groove 11 is only provided on the first surface of the first mounting plate 1; situation 2, the avoidance groove 11 is only provided on the second surface of the second mounting plate 2; there are two avoidance grooves 11, which are provided on the first surface of the first mounting plate 1 and the second surface of the second mounting plate 2 respectively.

[0039] In this embodiment, the avoidance groove 11 is only provided on the first surface of the first mounting plate 1 .

[0040] Furthermore, the width of the avoidance groove 11 is 1 mm to 3 mm. Preferably, the width of the avoidance groove 11 is 2 mm. This width can effectively avoid burrs and flashes on the edge of the clamping opening 83, and will not affect the fixing of the first mounting plate 1 and the second mounting plate 2 to the workpiece 8b to be processed in the first direction.

[0041] See also Figure 5-6 As shown, the spacing between the positioning block 3 and the backing plate 4 is adjustable. The positioning block 3 and the first mounting plate 1 are an integral structure or a split structure. In this embodiment, the positioning block 3 and the first mounting plate 1 are an integral structure. The backing plate 4 is a movable backing plate. By adjusting the position of the backing plate 4, the spacing between the backing plate 4 and the positioning block 3 is adjusted, so as to match the workpieces 8b to be processed of different specifications.

[0042] Furthermore, a waist-shaped hole 41 is formed on the backing plate 4. The waist-shaped hole 41 extends in a direction away from the workpiece 8b to be processed. A fixing bolt 42 is sleeved in the waist-shaped hole 41. The fixing bolt 42 is threadedly connected to the first mounting plate 1. In this embodiment, the waist-shaped hole 41 extends in the second direction. In addition, a gasket is provided between the fixing bolt 42 and the backing plate 4 to increase the friction between the fixing bolt 42 and the backing plate 4, thereby preventing the fixing bolt 42 from loosening due to vibration.

[0043] Further, the clamping device also includes an insert 5 and a clamping bolt 6. The support plate 4 is slidably disposed on the first surface of the first mounting plate 1. The insert 5 is fixed to the first mounting plate 1. The insert 5 is located on the first side of the support plate 4. The clamping bolt 6 extends in a direction away from the workpiece 8b to be processed. The clamping bolt 6 is threadedly connected to the insert 5 and is clamped on the first side of the support plate 4 to prevent the support plate 4 from accidentally slipping. In this embodiment, the clamping bolt 6 extends in the second direction.

[0044] Furthermore, the clamping device further includes a nut 7. The nut 7 is screwed onto the abutting bolt 6 and abuts against the insert 5. In this embodiment, the nut 7 is located on the first side of the insert 5. The first side of the insert 5 is the side away from the support plate 4. Since one end of the screw rod of the abutting bolt 6 abuts against the first side of the support plate 4, and the other end of the screw rod of the abutting bolt 6 abuts against the first side of the insert 5 through the nut 7, the screw rod of the abutting bolt 6 is effectively fixed, thereby preventing the abutting bolt 6 from loosening due to vibration.

[0045] Furthermore, in order to improve the working efficiency of the clamping device, the clamping device is arranged in a mirror image. Specifically, the positioning block 3 is a mirror image symmetrical structure. There are two backing plates 4. The two backing plates 4 are arranged in a mirror image and distributed on both sides of the positioning block 3. Both sides of the positioning block 3 are provided with abutment surfaces to cooperate with the corresponding backing plates 4, so that the clamping device can clamp two workpieces 8b to be processed at the same time.

[0046] In this embodiment, the specific working principle of the present invention is as follows: The workpiece 8b to be processed is placed on the abutting surface of the positioning block 3, and the processing area 84 of the workpiece 8b to be processed is exposed to the clamping device; According to the specifications of the workpiece 8b to be processed, the abutting bolt 6 is rotated to adjust the relative position of the abutting bolt 6 and the insert 5, and then the position of the backing plate 4 is adjusted, so that the positioning block 3 and the backing plate 4 fix the workpiece 8b to be processed in the second direction and the third direction, and then the fixing bolt 42 is tightened; after tightening the fixing bolt 42, the nut 7 is tightened to make the nut 7 abut against the insert 5; The first mounting plate 1 and the second mounting plate 2 are driven to close by a bench vise, so that the first mounting plate 1 and the second mounting plate 2 fix the workpiece 8b to be processed in the first direction; The machining equipment performs groove processing on the to-be-processed area 84 of the workpiece 8b to be processed.

[0047] In general, the clamping device provided in the present application can fix the special-shaped workpiece of the structure to be processed by cooperating with the first mounting plate and the second mounting plate, and the positioning block and the support plate, thereby reducing the difficulty of fixing the special-shaped workpiece, so that the bench vise can fix the special-shaped workpiece for subsequent groove processing; by adjusting the position of the support plate, the distance between the support plate and the positioning block can be adjusted to match workpieces of different specifications.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A clamping device, suitable for clamping a workpiece to be processed (8b), characterized in that: The clamping device comprises: a first mounting plate (1), a second mounting plate (2), a positioning block (3) and a backing plate (4); The first mounting plate (1) and the second mounting plate (2) are suitable for fixing the workpiece (8b) to be processed in a first direction during processing of the workpiece (8b) to be processed; The positioning block (3) and the support plate (4) are suitable for fixing the workpiece (8b) to be processed in a second direction and a third direction during processing of the workpiece (8b) to be processed, the second direction and the third direction being in the same clamping plane, and the first direction being perpendicular to the clamping plane; The positioning block (3) and the backing plate (4) are respectively arranged on the first surface of the first mounting plate (1); The positioning block (3) has a supporting surface, the supporting surface is recessed in a direction away from the supporting plate (4), the supporting surface is supported on the workpiece (8b) to be processed, the supporting surface has a first mating surface (31), a second mating surface (32) and a third mating surface (33), the first mating surface (31) and the third mating surface (33) are connected via the second mating surface (32), the first mating surface (31), the second mating surface (32) and the third mating surface (33) are respectively in contact with the first surface of the first mounting plate (1), the angle between the first mating surface (31) and the second mating surface (32) is less than 180°, and the angle between the second mating surface (32) and the third mating surface (33) is less than 180°.

2. The clamping device according to claim 1, characterized in that: An avoidance opening (34) is provided between the first mating surface (31) and the second mating surface (32), and / or the avoidance opening (34) is provided between the second mating surface (32) and the third mating surface (33), and the avoidance opening (34) is suitable for avoiding sharp corners on the workpiece (8b) to be processed.

3. The clamping device according to claim 1, characterized in that: The workpiece to be processed (8b) is provided with a clamping opening (83); the first mounting plate (1) and / or the second mounting plate (2) are provided with an avoidance groove (11), the position of the avoidance groove (11) matching the position of the edge of the clamping opening (83) when the workpiece to be processed (8b) is fixed on the first mounting plate (1).

4. The clamping device according to claim 3, characterized in that: The width of the avoidance groove (11) is 1 mm to 3 mm.

5. The clamping device according to claim 1, characterized in that: The distance between the positioning block (3) and the backing plate (4) is adjustable, and the backing plate (4) is a movable backing plate.

6. The clamping device according to claim 5, characterized in that: The backing plate (4) is provided with a waist-shaped hole (41), the waist-shaped hole (41) extending in a direction away from the workpiece (8b) to be processed; a fixing bolt (42) is sleeved in the waist-shaped hole (41), and the fixing bolt (42) is threadedly connected to the first mounting plate (1).

7. The clamping device according to claim 5, characterized in that: Also includes: Insert (5) and fastening bolt (6); The backing plate (4) is slidably arranged on the first surface of the first mounting plate (1); The insert (5) is fixed on the first mounting plate (1), and the insert (5) is located on a first side of the backing plate (4), and the first side of the backing plate (4) is a side away from the positioning block (3); The abutment bolt (6) extends in a direction away from the workpiece (8b) to be processed, and the abutment bolt (6) is threadedly connected to the insert (5) and abuts against a first side of the support plate (4).

8. The clamping device according to claim 7, characterized in that: Also includes: Nut (7); The nut (7) is screwed onto the abutting bolt (6) and abuts against the insert (5).

9. The clamping device according to claim 1, characterized in that: The thickness of the positioning block (3) is smaller than the thickness of the workpiece (8b) to be processed.

10. The clamping device according to claim 1, characterized in that: The positioning block (3) is of a mirror-symmetrical structure; there are two support plates (4), and the two support plates (4) are arranged in a mirror-symmetrical manner and are distributed on both sides of the positioning block (3).

Images