A clamp

Abstract

The application discloses a clamp, which comprises a bottom plate, a top pressing block, a first profiling mechanism and a second profiling mechanism. The bottom plate is provided with a bottom pressing block, and the top pressing block and the bottom pressing block are distributed along the height direction and used for clamping a workpiece along the height direction. The first profiling mechanism is installed at the periphery of the bottom pressing block, and the second profiling mechanism is installed at the periphery of the first profiling mechanism and used for clamping the workpiece along the horizontal direction. The surfaces of the bottom pressing block and the top pressing block matched with each other are arc surfaces, and the surfaces of the first profiling mechanism and the second profiling mechanism matched with each other are annular arc surfaces, so that the clamp can be used for machining a curved surface profile of a soft material. Through the multi-directional fixing mode of the workpiece, the clamping effect of the clamp on the workpiece can be improved, so as to be favorable for improving the machining precision of the workpiece, the safety and reliability in the machining process and the quality and the yield of products.

Description

Technical Field

[0001] This application relates to the field of machining technology, and in particular to a fixture. Background Technology

[0002] Currently, in the processing of products with curved surfaces, the machining accuracy of the curved surfaces directly affects the final quality of the product, especially for softer materials (such as aluminum alloys, plastics, rubber, or carbon fiber composites), where the machining difficulty is even more pronounced. In existing technologies, these curved surfaces lack effective support, making them prone to elastic deformation under the cutting force of the tool. This can result in localized protrusions or depressions on the material surface, ultimately leading to deviations in the machining accuracy of the curved surface contour, thus affecting the product's quality and appearance. Utility Model Content

[0003] In view of this, this application provides a fixture to solve the technical problem in the prior art of poor machining accuracy of curved surface contours of workpieces, which affects product quality.

[0004] This application provides a clamp for clamping a workpiece. The clamp includes a base plate, a top pressure block, a first contouring mechanism, and a second contouring mechanism. The base plate is provided with a bottom pressure block, and the top pressure block is located on the side of the bottom pressure block away from the base plate. The top surface of the bottom pressure block and the bottom surface of the top pressure block are mutually cooperating arc surface structures. The first contouring mechanism and the second contouring mechanism are both mounted on the base plate. The first contouring mechanism is located outside the bottom pressure block, and the second contouring mechanism is located outside the first contouring mechanism.

[0005] The first contouring mechanism also has an installation part, and the second contouring mechanism also has a processing part. The installation part and the processing part are mutually cooperating annular arc surface structures.

[0006] In this embodiment, the fixture can fix the workpiece in multiple directions, thereby improving the fixation effect on the workpiece and avoiding the risk of local bulges or depressions on the surface of the workpiece due to the cutting force during processing. This is beneficial to improving the processing accuracy of the processing equipment, as well as the safety and reliability of the processing process, and thus to improving the quality and yield of the product.

[0007] At the same time, by fixing the workpiece in multiple directions, the time for clamping and positioning can be shortened, which is conducive to improving the production efficiency of the product.

[0008] Furthermore, when the workpiece is made of a flexible material (such as rubber, silicone, and film), by setting the top surface of the bottom pressure block and the bottom surface of the top pressure block as mutually cooperating arc surface structures, and setting the first contouring mechanism and the second contouring mechanism as mutually cooperating annular arc surface structures, the fixture can be used to process the curved contours of flexible materials. This design not only increases the contact area between the fixture and the workpiece to improve the uniformity of the clamping force applied by the fixture to the workpiece, but also better conforms to the curved surface structure of the workpiece to improve the stability and reliability of the fixture in clamping the workpiece. This avoids the risk of local stress concentration during workpiece processing, which may lead to surface deformation or damage, thereby improving the overall integrity of the product.

[0009] In one possible implementation, the first contouring mechanism includes a first body and a second body. The first body is distributed on opposite sides of the bottom pressure block and is fixedly connected to the base plate. The second body is distributed on opposite sides of the bottom pressure block and is slidably connected to the base plate.

[0010] The mounting part further includes a first mounting part and a second mounting part, wherein the first mounting part is connected to the first body and the second mounting part is connected to the second body.

[0011] When the clamp is in the initial state, the second mounting part is located within the projection range of the first mounting part. When the clamp is in the clamping state, the second mounting part is flush with the outer surface of the first mounting part.

[0012] In one possible implementation, the first contouring mechanism further includes a first sliding portion connected to the second body, the first sliding portion being slidably connected to the base plate, and the clamp further includes a first limiting block, the first limiting block being fixedly connected to the base plate, and at least a portion of the first limiting block abutting against the upper surface of the first sliding portion.

[0013] In one possible implementation, the clamp further includes a drive block mounted on the base plate, the drive block being located inside the first contouring mechanism, the drive block abutting against the inner wall of the second body via a first mating surface, and the first mating surface being inclined relative to the base plate.

[0014] In one possible implementation, the drive block further includes a receiving cavity, a limiting rod, and a first elastic member, the limiting rod including a connected rod portion and a head, and the receiving cavity for receiving at least a portion of the first elastic member and the rod portion.

[0015] The rod extends through the receiving cavity and is fixedly connected to the base plate. The first elastic element is sleeved on the outer wall of the rod, and one end of the first elastic element is connected to the base plate, while the other end is connected to the bottom wall of the receiving cavity.

[0016] When the clamp is in the initial state, the first elastic element is in the initial state, the upper surface of the driving block abuts against the head, and the lower surface of the driving block is separated from the base plate. When the clamp is in the clamping state, the first elastic element is in the compressed state, the upper surface of the driving block is separated from the head, and the lower surface of the driving block abuts against the base plate.

[0017] In one possible implementation, the clamp further includes positioning posts mounted on the base plate and distributed on both sides of the first contouring mechanism. The second contouring mechanism further includes a third body distributed on both sides of the positioning posts and slidably connected to the base plate.

[0018] When the fixture is in the initial state, the third body is separated from the positioning post, and the processing part is disengaged from the mounting part. When the fixture is in the clamping state, the third body is attached to the positioning post, and the processing part is connected to the mounting part.

[0019] In one possible implementation, the second contouring mechanism further includes a second sliding portion connected to the third body, the second sliding portion being slidably connected to the base plate, and the clamp further includes a second limiting block, the second limiting block being fixedly connected to the base plate, and at least a portion of the second limiting block abutting against the upper surface of the second sliding portion.

[0020] In one possible implementation, the clamp further includes a third limiting block, which includes a first limiting portion and two second limiting portions, wherein the first limiting portion is located between the two second limiting portions and is spaced apart from the two second limiting portions.

[0021] When the clamp is in the locked state, the first limiting part abuts against the positioning post, and the second limiting part abuts against the third body to restrict the movement between two adjacent third bodies.

[0022] In one possible implementation, the clamp further includes a guide post mounted on the base plate and disposed adjacent to the bottom pressure block, and the top pressure block also has a first through hole, wherein at least a portion of the guide post is located within the first through hole when the clamp is in a clamping state.

[0023] In one possible implementation, the guide post includes a base and a guide portion, the base being fixedly connected to the base plate, the guide portion being connected to the side of the base facing the top pressure block, and the base and the guide portion being detachably connected.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the base plate and top pressure block provided in this application in one embodiment;

[0027] Figure 2 This is a schematic diagram of the structure of the elastic element provided in this application in one embodiment;

[0028] Figure 3 A schematic diagram of the structure of the first contouring mechanism provided in this application in one embodiment;

[0029] Figure 4 This is a schematic diagram of the structure of the workpiece provided in this application in one embodiment;

[0030] Figure 5 This is a schematic diagram of the structure of the positioning post provided in this application in one embodiment;

[0031] Figure 6 This is a schematic diagram of the structure of the second contouring mechanism provided in this application in one embodiment;

[0032] Figure 7 A schematic diagram of the structure of the second contouring mechanism and limiting block provided in this application in one embodiment;

[0033] Figure 8 This is a schematic diagram of the structure of the driver block provided in this application in one embodiment;

[0034] Figure 9 for Figure 8 A sectional view.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Base plate;

[0037] 11-Bottom pressing block;

[0038] 12-First groove;

[0039] 13-Second groove;

[0040] 2-Top pressing block;

[0041] 21 - First through hole;

[0042] 3-First contouring mechanism;

[0043] 31-First ontology;

[0044] 32-Second Body;

[0045] 33-Installation Section;

[0046] 331 - First Installation Section;

[0047] 332 - Second Installation Section;

[0048] 34 - First sliding part;

[0049] 4-Second contouring mechanism;

[0050] 41-Third Body;

[0051] 42-Machining Department;

[0052] 43-Second sliding part;

[0053] 5-Limit block;

[0054] 51 - First limit block;

[0055] 52 - Second limit block;

[0056] 53 - Third limit block;

[0057] 531 - First limiting part;

[0058] 532 - Second limiting part;

[0059] 6-Drive block;

[0060] 61 - Receiving cavity;

[0061] 62-Limit rod;

[0062] 621 - Bar section;

[0063] 622 - Head;

[0064] 63 - Third through hole;

[0065] 64 - First mating surface;

[0066] 7-Elastic element;

[0067] 71-First elastic element;

[0068] 72 - Second elastic element;

[0069] 73 - Third elastic element;

[0070] 8-Positioning pin;

[0071] 9-Guide column;

[0072] 91 - Base;

[0073] 92-Guide section;

[0074] 10-Workpiece;

[0075] 101 - Second through hole.

[0076] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0077] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0078] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0079] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0080] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0081] Embodiments of this application provide a clamp for clamping a workpiece, such as... Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, the fixture includes a base plate 1, a top pressure block 2, a first contouring mechanism 3, and a second contouring mechanism 4. The base plate 1 is provided with a bottom pressure block 11, and the top pressure block 2 is located on the side of the bottom pressure block 11 away from the base plate 1 along the first direction x. The first contouring mechanism 3 and the second contouring mechanism 4 are both installed on the base plate 1. Along the second direction y and the third direction z, the first contouring mechanism 3 is located outside the bottom pressure block 11, and the second contouring mechanism 4 is located outside the first contouring mechanism 3.

[0082] The bottom pressure block 11 and the top pressure block 2 are mutually cooperating arc surface structures used to clamp the workpiece 10 along the first direction x. The first contouring mechanism 3 also has a mounting part 33, and the second contouring mechanism 4 also has a processing part 42. The mounting part 33 and the processing part 42 are mutually cooperating ring structures used to clamp the workpiece 10 along the second direction y and the third direction z.

[0083] It should be noted that the first direction x can be the height direction of the base plate 1, the second direction y can be the length direction of the base plate 1, and the third direction z can be the width direction of the base plate 1.

[0084] In this embodiment of the application, the workpiece 10 can be sleeved on the mounting part 33 of the first contouring mechanism 3, and when the workpiece 10 is sleeved on the mounting part 33, at least a portion of the workpiece 10 is located between the bottom pressure block 11 and the top pressure block 2 along the first direction x.

[0085] Specifically, the bottom pressure block 11 and the top pressure block 2 are distributed along the first direction x, so that they can be used to clamp the workpiece 10 along the first direction x to restrict the movement of the workpiece 10 along the first direction x. The first contouring mechanism 3 and the second contouring mechanism 4 are distributed along the center of the base plate 1 toward the edge, so that the mounting part 33 and the processing part 42 can be used to clamp the workpiece 10 along the second direction y and the third direction z to restrict the movement of the workpiece 10 along the second direction y and the third direction z.

[0086] This design enables the fixture to fix the workpiece 10 in multiple directions, thereby improving the fixation effect and avoiding the risk of local bulges or depressions on the surface of the workpiece 10 due to the cutting force during processing. This helps to improve the processing accuracy of the processing equipment (not shown in the figure) on the workpiece 10, as well as the safety and reliability of the processing process, and ultimately improves the quality and yield of the product.

[0087] At the same time, by fixing in multiple directions, the time for clamping and positioning the workpiece 10 can be shortened, which is conducive to improving the production efficiency of the product.

[0088] Furthermore, when the workpiece 10 is made of a flexible material (such as rubber, silicone, and film), by setting the top surface of the bottom pressure block 11 and the bottom surface of the top pressure block 2 as mutually cooperating arc surface structures, and setting the first contouring mechanism 3 and the second contouring mechanism 4 as mutually cooperating annular arc surface structures, the fixture can be used to process the curved contours of flexible materials. Through this design, not only can the contact area between the fixture and the workpiece 10 be increased to improve the uniformity of the clamping force applied by the fixture to the workpiece 10, but it can also better fit the curved surface structure of the workpiece 10 to improve the stability and reliability of the fixture in clamping the workpiece 10, and avoid the risk of local stress concentration on the workpiece 10 during processing, which may lead to surface deformation or damage, thereby improving the overall integrity of the product.

[0089] In one possible implementation, a plurality of mounting holes (not shown in the figure) are provided on the periphery of the bottom pressure block 11 along the direction from the center of the base plate 1 toward its edge, and the plurality of mounting holes are distributed at intervals along the second direction y and the third direction z. The first contouring mechanism 3 and the second contouring mechanism 4 are detachably connected to the base plate 1 through the mounting holes.

[0090] In this embodiment, when the workpiece 10 is small, the first contouring mechanism 3 can be installed near the bottom pressure block 11 to reduce the distance between the first contouring mechanism 3 and the bottom pressure block 11. Alternatively, when the workpiece 10 is large, the first contouring mechanism 3 can be installed away from the bottom pressure block 11 to increase the distance between the first contouring mechanism 3 and the bottom pressure block 11. With this design, when the workpiece 10 is fitted onto the mounting part 33, it can be supported by the first contouring mechanism 3. Then, the second contouring mechanism 4 is installed outside the first contouring mechanism 3, allowing the mounting part 33 and the processing part 42 to clamp the workpiece 10 along the second direction y and the third direction z. Finally, the bottom pressure block 11 and the top pressure block 2 clamp the workpiece 10 along the first direction x. This allows the fixture to fix workpieces 10 of different sizes in multiple directions without replacing the entire fixture; only the first contouring mechanism 3 and the second contouring mechanism 4 need to be replaced. This reduces the production cost of the fixture, improves its versatility and flexibility, and better meets actual production needs.

[0091] In one specific implementation, such as Figure 2 and Figure 3 As shown, the first contouring mechanism 3 includes a first body 31 and a second body 32. The first body 31 is distributed on opposite sides of the bottom pressure block 11 along the second direction y and is fixedly connected to the base plate 1. The second body 32 is distributed on opposite sides of the bottom pressure block 11 along the third direction z and is slidably connected to the base plate 1.

[0092] The mounting part 33 also includes a first mounting part 331 and a second mounting part 332. The first mounting part 331 is connected to the first body 31, and the second mounting part 332 is connected to the second body 32.

[0093] When the clamp is in the initial state, the second mounting part 332 is located within the projection range of the first mounting part 331. When the clamp is in the clamping state, the second mounting part 332 is flush with the outer surface of the first mounting part 331.

[0094] In this embodiment, when the fixture is in its initial state, the second body 32 moves along a third direction z toward the center of the base plate 1, so that the second mounting part 332 is located within the projection range of the first mounting part 331, thereby forming an operating space for mounting the workpiece 10. At this time, the operator can fit the workpiece 10 onto the first mounting part 331, so that part of the workpiece 10 is supported by the first mounting part 331, and the other part is suspended in the air, thereby achieving the initial installation of the workpiece 10 on the first contouring mechanism 3.

[0095] After the workpiece 10 is fitted onto the first mounting part 331, the second body 32 can be controlled to move along the third direction z toward the edge of the base plate 1, so that the outer surface of the second mounting part 332 is flush with the outer surface of the first mounting part 331, thus forming the mounting part 33 of the first contouring mechanism 3, thereby creating a continuous support surface. Furthermore, during the movement of the second mounting part 332, the suspended portion of the workpiece 10 can be gradually supported. After the second mounting part 332 has moved into position, the second mounting part 332 and the first mounting part 331 jointly support the workpiece 10, thereby achieving the final installation of the workpiece 10 on the first contouring mechanism 3.

[0096] After the workpiece 10 is mounted on the first contouring mechanism 3, the second contouring mechanism 4 can be controlled to be located outside the first contouring mechanism 3, so that the mounting part 33 and the processing part 42 clamp the workpiece 10 along the second direction y and the third direction z. Then, the top pressure block 2 is controlled to be located above the bottom pressure block 11, so that the bottom pressure block 11 and the top pressure block 2 clamp the workpiece 10 along the first direction x, so that the fixture is in a clamped state, thereby realizing the multi-directional fixation of the workpiece 10 by the fixture, so that the subsequent processing equipment can process it.

[0097] After the processing equipment completes the processing of the workpiece 10 and removes the top pressure block 2 and the second contouring mechanism 4, the second body 32 can be controlled to move in the third direction z toward the center of the base plate 1, so that the second mounting part 332 is once again within the projection range of the first mounting part 331, thereby forming an operating space for disassembling the workpiece 10. At this time, the fixture is in its initial state, with part of the workpiece 10 supported by the first mounting part 331 and the other part suspended in the air, allowing the operator to remove the workpiece 10 from the first mounting part 331.

[0098] Therefore, in this embodiment, by setting the first contouring mechanism 3 as a first body 31 and a second body 32, and fixing the first body 31 to the base plate 1 and sliding the second body 32 to the base plate 1, the operation space for assembling and disassembling the workpiece 10 can be provided, thereby reducing the difficulty of assembling and disassembling the workpiece 10, improving the convenience of operation, and further shortening the time for clamping and positioning the workpiece 10, thereby improving the production efficiency of the product.

[0099] In other embodiments, the first body 31 can be slidably connected to the base plate 1, and the second body 32 can be fixedly connected to the base plate 1. Only one of the first body 31 and the second body 32 needs to be fixedly connected to the base plate 1, and the other needs to be slidably connected to the base plate 1.

[0100] In one specific implementation, such as Figure 2 , Figure 3 and Figure 4 As shown, the first contouring mechanism 3 also includes a first sliding part 34 connected to the second body 32. The first sliding part 34 is slidably connected to the base plate 1. The clamp also includes a first limiting block 51. The first limiting block 51 is fixedly connected to the base plate 1, and at least a portion of the first limiting block 51 abuts against the upper surface of the first sliding part 34 along the first direction x.

[0101] In this embodiment, the second body 32, the second mounting part 332 and the first sliding part 34 can be an integrally formed structure to improve the stability and reliability of the connection between the three, so that the first sliding part 34 can synchronously drive the second body 32 to move along the third direction z, ensuring that the first contouring mechanism 3 has operating space when the clamp is in the initial state and has a continuous support surface when the clamp is in the clamping state.

[0102] An elastic element 7 can be provided between the first sliding part 34 and the base plate 1 to enable the second body 32 to automatically reset.

[0103] Specifically, the base plate 1 is provided with a first groove 12, and the first sliding part 34 is provided with a first mating groove (not shown in the figure) on the side facing the base plate 1. The first groove 12 and the first mating groove can form a receiving space to accommodate the second elastic member 72.

[0104] When the second body 32 is installed on the base plate 1, a part of the second elastic member 72 is located in the first groove 12, and another part of the second elastic member 72 is located in the first mating groove. When the clamp is in the initial state, the second elastic member 72 is in the initial state. The first sliding part 34, driven by the second elastic member 72, makes the second mounting part 332 of the second body 32 located within the projection range of the first mounting part 331 of the first body 31 along the second direction y, so that the operator can install or remove the workpiece 10.

[0105] During the process of switching the clamp from the initial state to the clamping state, the first sliding part 34 will move along the third direction z toward the edge of the base plate 1, and drive the second body 32 to move synchronously. The first sliding part 34 will also compress the second elastic member 72 and make it generate a restoring force.

[0106] When the clamp is in the clamping state, the second elastic element 72 is in the compressed state, and the first sliding part 34 squeezes the second elastic element 72, so that the second mounting part 332 of the second body 32 is flush with the outer surface of the first mounting part 331 of the first body 31, so as to provide a stable support effect for the workpiece 10.

[0107] During the process of switching the clamp from the clamping device to the initial state, the second elastic element 72 releases the restoring force, and the first sliding part 34 moves along the third direction z toward the center of the base plate 1, and drives the second body 32 to move synchronously, so as to drive the second body 32 to automatically reset, so that the operator can disassemble the finished workpiece 10 and install the next unprocessed workpiece 10.

[0108] This design approach not only improves the automation level of the fixture and increases operational efficiency to enable rapid assembly and disassembly of workpiece 10, but also enhances the safety and reliability of the assembly and disassembly process, reducing the safety risks associated with manual operation.

[0109] Meanwhile, by setting the first groove 12 and the first mating groove, the deformation direction of the second elastic member 72 can be restricted, thereby enabling the first sliding part 34 to move along the deformation direction of the second elastic member 72. This helps to reduce the possibility of the first sliding part 34 deviating during the sliding process and improves the stability and reliability of the sliding process.

[0110] In addition, the clamp can restrict the movement of the first sliding part 34 by limiting the block 5, so as to reduce the possibility that the first sliding part 34 will detach from the base plate 1 during the movement.

[0111] Specifically, the first limiting block 51 is disposed adjacent to the first sliding part 34, and the first limiting block 51 can be an L-shaped structure.

[0112] When the first limiting block 51 is installed on the base plate 1, a portion of the first limiting block 51 can be located above the first sliding part 34 and abut against the upper surface of the first sliding part 34 to prevent the first sliding part 34 from wobbling along the first direction x during sliding; furthermore, another portion of the first limiting block 51 can be located on any side of the first sliding part 34 along the second direction y and abut against one side wall of the first sliding part 34 to prevent the first sliding part 34 from wobbling along the second direction y during sliding, thereby improving the stability and reliability of the first sliding part 34 during the sliding process.

[0113] In one specific implementation, such as Figure 1 and Figure 4 As shown, the fixture also includes a drive block 6, which is mounted on the base plate 1. Along the second direction y and the third direction z, the drive block 6 is located inside the first contouring mechanism 3. The drive block 6 abuts against the inner wall of the second body 32 through the first mating surface 64, and the first mating surface 64 is inclined relative to the base plate 1.

[0114] In this embodiment, the driving block 6 is used to drive the second body 32 to move along the center of the base plate 1 toward the edge of the base plate 1, so as to achieve the second mounting part 332 being flush with the outer surface of the first mounting part 331, while restricting the movement of the second body 32 along the edge of the base plate 1 toward the center of the base plate 1, thereby improving the structural stability of the first contouring mechanism 3 when the fixture is clamped, avoiding the risk of relative displacement of the first body 31 and the second body 32 during processing, which could lead to the workpiece 10 shifting, local bulging, or local denting, thereby improving the stability of the workpiece 10 installation, which is beneficial to improving the safety and reliability of processing, and thus improving the quality and yield of the product.

[0115] Specifically, since the drive block 6 abuts against the inner wall of the second body 32 through the first mating surface 64, after the workpiece 10 is fitted onto the first mounting part 331, the drive block 6 can be controlled to move from the top pressing block 2 toward the bottom pressing block 11 along the first direction x, which can simultaneously push the second body 32 to slide from the center of the base plate 1 toward the edge of the base plate 1 along the third direction z, so that the second mounting part 332 is flush with the outer surface of the first mounting part 331, thereby forming the mounting part 33 of the first contouring mechanism 3, and thus forming a continuous support surface to support the workpiece 10.

[0116] More specifically, along the first direction x, the angle between the first mating surface 64 and the upper surface of the base plate 1 is an acute angle, so that the second body 32 can be pushed to move during the installation of the drive block 6. This reduces the processing difficulty of the drive block 6 while extruding the second body 32, and is more in line with actual production needs.

[0117] In one specific implementation, such as Figure 8 and Figure 9 As shown, the drive block 6 also includes a receiving cavity 61, a limiting rod 62, and a first elastic member 71. The limiting rod 62 includes a connected rod portion 621 and a head 622. The receiving cavity 61 is used to receive at least a portion of the first elastic member 71 and the rod portion 621.

[0118] Along the first direction x, the rod 621 passes through the receiving cavity 61 and is fixedly connected to the base plate 1. The first elastic member 71 is sleeved on the outer wall of the rod 621, and one end of the first elastic member 71 is connected to the base plate 1, and the other end is connected to the bottom wall of the receiving cavity 61.

[0119] When the clamp is in the initial state, the first elastic element 71 is in the initial state, the upper surface of the drive block 6 abuts against the head 622, and the lower surface of the drive block 6 is separated from the base plate 1. When the clamp is in the clamping state, the first elastic element 71 is in the compressed state, the upper surface of the drive block 6 is separated from the head 622, and the lower surface of the drive block 6 abuts against the base plate 1.

[0120] In this embodiment, when the limiting rod 62 passes through the driving block 6 along the first direction x and is fixedly connected to the base plate 1, the limiting rod 62 can guide and limit the movement of the driving block 6 along the first direction x, thereby improving the stability and reliability of the driving block 6 during movement. When the first elastic member 71 is sleeved on the outer wall of the rod portion 621, the first elastic member 71 is located in the receiving cavity 61, and one end of the first elastic member 71 is connected to the base plate 1, and the other end is connected to the bottom wall of the receiving cavity 61. The first elastic member 71 can reset the movement of the driving block 6 along the first direction x, thereby improving the convenience of switching the clamp from the clamping state to the initial state.

[0121] Specifically, the drive block 6 is provided with a receiving cavity 61, and the limiting rod 62 includes a connected rod portion 621 and a head 622.

[0122] The rod portion 621 of the limiting rod 62 can pass through the receiving cavity 61 and be fixedly connected to the base plate 1, so as to restrict the movement of the drive block 6 along the second direction y and the third direction z through the cooperation relationship between the rod portion 621 and the receiving cavity 61. This ensures that the drive block 6 can move stably along the extension direction of the rod portion 621 (i.e., the first direction x), and further ensures that the drive block 6 can push the second body 32 to move along the third direction z, so as to improve the tightness and reliability of the linkage between the components during the switching of the working state of the fixture.

[0123] Meanwhile, the head 622 of the limiting rod 62 is located outside the receiving cavity 61, which is used to limit the movement of the driving block 6 along the first direction x, so as to prevent the driving block 6 from separating from the rod 621, so as to ensure that the driving block 6 can move within a preset range (i.e., between the head 622 and the base plate 1), which is beneficial to improving the stability and reliability of the driving block 6 during the movement process. For example, during the process of switching the clamp from the initial state to the clamping state, the drive block 6 moves along the first direction x toward the direction closer to the base plate 1, and the second body 32 moves synchronously along the third direction z toward the edge of the base plate 1 under the push of the drive block 6. When the lower surface of the drive block 6 abuts against the upper surface of the base plate 1, the second mounting part 332 is flush with the outer surface of the first mounting part 331. During the process of switching the clamp from the clamping state to the initial state, the drive block 6 moves along the first direction x toward the direction away from the base plate 1, and the second body 32 moves synchronously along the third direction z toward the center of the base plate 1 under the push of the second elastic member 72. When the upper surface of the drive block 6 abuts against the lower surface of the head 622, the second mounting part 332 is located within the projection range of the first mounting part 331.

[0124] Furthermore, during the movement of the drive block 6 along the first direction x toward the base plate 1, the first elastic element 71 is compressed and gradually contracts to generate a restoring force until the lower surface of the drive block 6 abuts against the upper surface of the base plate 1. At this point, the drive block 6 can be locked onto the base plate 1, keeping the first elastic element 71 in a compressed state. This helps improve the structural stability of the mounting part 33, ensuring the stability and reliability of the machining process. After the machining of the workpiece 10 is completed, the lock on the drive block 6 can be released, allowing the first elastic element 71 to release its restoring force and push the drive block 6 along the first direction x toward the direction away from the base plate 1 until the upper surface of the drive block 6 abuts against the lower surface of the head 622. This achieves automatic reset of the drive block 6, thereby enabling automatic reset of the second body 32 and improving the automation level of the fixture.

[0125] Specifically, the drive block 6 includes a third through hole 63 extending along the first direction x for accommodating fasteners (e.g., bolts), and the shank of the bolt can pass through the third through hole 63 to connect with the base plate 1. The head of the bolt is located outside the third through hole 63 and always abuts against the upper surface of the drive block 6.

[0126] During the process of gradually tightening the bolt and the base plate 1, the head of the bolt can push the drive block 6 to move towards the base plate 1 along the first direction x. When the lower surface of the drive block 6 abuts against the upper surface of the base plate 1, the bolt can fix the drive block 6 to the base plate 1 to lock the working state of the drive block 6. During the process of gradually unlocking the bolt and the base plate 1, the first elastic element 71 can release the restoring force to push the drive block 6 to move away from the base plate 1 along the first direction x. When the upper surface of the drive block 6 abuts against the lower surface of the head 622, the drive block 6 is automatically reset.

[0127] At the same time, such as Figure 4 As shown, the workpiece 10 is provided with a second through hole 101. When the workpiece 10 is sleeved on the first mounting part 331, the operator can use his hand or a tool to pass through the second through hole 101 to engage with the bolt, so as to lock or unlock the bolt and control the movement of the drive block 6 along the first direction x.

[0128] In one specific implementation, such as Figure 5 and Figure 6 As shown, the fixture also includes positioning posts 8, which are mounted on the base plate 1 and distributed on both sides of the first contouring mechanism 3 along the second direction y. The second contouring mechanism 4 also includes a third body 41, which is distributed on both sides of the positioning posts 8 along the third direction z, and the third body 41 is slidably connected to the base plate 1.

[0129] When the fixture is in the initial state, the third body 41 is separated from the positioning post 8, and the machining part 42 is disengaged from the mounting part 33. When the fixture is in the clamping state, the third body 41 is attached to the positioning post 8, and the machining part 42 is connected to the mounting part 33.

[0130] In this embodiment, since the second contouring mechanism 4 is located outside the first contouring mechanism 3, the second contouring mechanism 4 can be quickly installed and positioned by setting positioning posts 8 on both sides of the first contouring mechanism 3 along the second direction y. This allows the positioning posts 8 to serve as markers during the assembly of the second contouring mechanism 4, assisting in the installation of the second contouring mechanism 4. This helps to shorten the installation and positioning time of the second contouring mechanism 4 and improve the assembly efficiency of the second contouring mechanism 4.

[0131] The second contouring mechanism 4 includes a third body 41 and a processing unit 42 connected to the third body 41.

[0132] When the fixture is in its initial state, the third body 41 separates from the positioning post 8, and the machining part 42 is disengaged from the mounting part 33. At this time, there is an operating space between the third body 41 and the first contouring mechanism 3 for installing the workpiece 10, so as to avoid the risk of interference between the operator and the third body 41 when installing the workpiece 10, thereby improving the safety and convenience of the operator during the operation.

[0133] After the workpiece 10 is installed on the first contouring mechanism 3, the third body 41 can be controlled to move in the direction of the third direction z toward the center of the base plate 1, so that the third bodies 41 located on both sides of the first contouring mechanism 3 are in contact with the positioning post 8 to form the second contouring mechanism 4. This allows the processing part 42 of the second contouring mechanism 4 to cooperate and connect with the mounting part 33 of the first contouring mechanism 3, so as to clamp the workpiece 10 in the second direction y and the third direction z.

[0134] After the first contouring mechanism 3 and the second contouring mechanism 4 are connected, the top pressure block 2 can be controlled to be located above the bottom pressure block 11, so that the bottom pressure block 11 and the top pressure block 2 clamp the workpiece 10 along the first direction x, so that the fixture is in a clamped state, thereby realizing the multi-directional fixation of the workpiece 10 by the fixture, so that the subsequent processing equipment can process it.

[0135] After the processing equipment completes the processing of the workpiece 10 and removes the top pressure block 2, the third body 41 can be controlled to move along the third direction z toward the edge of the base plate 1, so that the processing part 42 and the mounting part 33 are disengaged. Then, the second body 32 is controlled to move along the third direction z toward the center of the base plate 1, so that the second mounting part 332 is located within the projection range of the first mounting part 331. At this time, the fixture is in the initial state, part of the workpiece 10 is supported by the first mounting part 331, and the other part is suspended, so that the operator can remove the workpiece 10 from the first mounting part 331.

[0136] Therefore, in this embodiment, by setting the second contouring mechanism 4 as two third bodies 41 and slidingly connecting the third bodies 41 to the base plate 1, it is possible to provide operating space for the assembly and disassembly of the workpiece 10, thereby reducing the difficulty of assembling and disassembling the workpiece 10 and improving the convenience of operation. At the same time, by setting the positioning column 8 to assist in the installation, matching and positioning of the two third bodies 41, the installation and positioning time of the second contouring mechanism 4 can be shortened, and the assembly efficiency of the second contouring mechanism 4 can be improved, which is conducive to improving the production efficiency of the product.

[0137] In one specific implementation, such as Figure 6 and Figure 7As shown, the second contouring mechanism 4 also includes a second sliding part 43 connected to the third body 41. The second sliding part 43 is slidably connected to the base plate 1. The clamp also includes a second limiting block 52. The second limiting block 52 is fixedly connected to the base plate 1, and at least a portion of the second limiting block 52 abuts against the upper surface of the second sliding part 43 along the first direction x.

[0138] In this embodiment, the third body 41, the processing part 42, and the second sliding part 43 can be integrally formed to improve the stability and reliability of the connection between the three, so that the second sliding part 43 can synchronously drive the third body 41 to move along the third direction z, ensuring that the second contouring mechanism 4 can have a gap with the first contouring mechanism 3 when the fixture is in the initial state, so as to form an operating space for loading and unloading the workpiece 10, and cooperate with the first contouring mechanism 3 when the fixture is in the clamping state, so as to clamp the workpiece 10 along the second direction y and the third direction z, thereby improving the stability and reliability of the workpiece 10 installation, thereby improving the clamping effect of the fixture on the workpiece 10 and ensuring the safety of subsequent processing.

[0139] An elastic element 7 can be provided between the second sliding part 43 and the base plate 1 to enable the third body 41 to automatically reset.

[0140] Specifically, the base plate 1 is provided with a second groove 13, and the second sliding part 43 is provided with a second mating groove (not shown in the figure) on the side facing the base plate 1. The second groove 13 and the second mating groove can form a receiving space to accommodate the third elastic member 73.

[0141] When the third body 41 is installed on the base plate 1, a part of the third elastic member 73 is located in the second groove 13, and another part of the third elastic member 73 is located in the second mating groove. When the fixture is in the initial state, the third elastic member 73 is in the initial state. The second sliding part 43 is driven by the third elastic member 73 to make the third body 41 located near the edge of the base plate 1, so that there is a large gap between the second contouring mechanism 4 and the first contouring mechanism 3, so as to form an operating space for installing the workpiece 10, which facilitates the worker to install or remove the workpiece 10.

[0142] During the process of switching the clamp from the initial state to the clamping state, the second sliding part 43 will move along the third direction z toward the center of the base plate 1, and drive the third body 41 to move synchronously. The second sliding part 43 will also compress the third elastic member 73 and make it generate a restoring force.

[0143] When the clamp is in the clamping state, the third elastic element 73 is in the compressed state, the second sliding part 43 squeezes the third elastic element 73, and the second contouring mechanism 4 is connected with the first contouring mechanism 3 to clamp the workpiece 10 in the second direction y and the third direction z.

[0144] During the process of switching the clamp from the clamping device to the initial state, the third elastic element 73 releases the restoring force, and the second sliding part 43 moves along the third direction z toward the edge of the base plate 1, and drives the third body 41 to move synchronously, so as to drive the third body 41 to automatically reset, thereby opening the second contouring structure 4 and maintaining a gap with the first contouring mechanism 3, so that the operator can disassemble the finished workpiece 10 and install the next unfinished workpiece 10.

[0145] This design approach not only improves the automation level of the fixture and increases operational efficiency to enable rapid assembly and disassembly of workpiece 10, but also enhances the safety and reliability of the assembly and disassembly process, reducing the safety risks associated with manual operation.

[0146] Meanwhile, by setting the second groove 13 and the second mating groove, the deformation direction of the third elastic member 73 can be restricted, thereby enabling the second sliding part 43 to move along the deformation direction of the third elastic member 73. This helps to reduce the possibility of the second sliding part 43 deviating during the sliding process and improves the stability and reliability of the sliding process.

[0147] In addition, the clamp can restrict the movement of the second sliding part 43 by limiting the block 5, so as to reduce the possibility that the second sliding part 43 will detach from the base plate 1 during the movement.

[0148] Specifically, the second limiting block 52 is disposed adjacent to the second sliding part 43, and the second limiting block 52 can be an L-shaped structure.

[0149] When the second limiting block 52 is installed on the base plate 1, a portion of the second limiting block 52 can be located above the second sliding part 43 and abut against the upper surface of the second sliding part 43 to prevent the second sliding part 43 from wobbling along the first direction x during sliding; furthermore, another portion of the second limiting block 52 can be located on the side of the second sliding part 43 facing the edge of the base plate 1 and abut against the side wall of the second sliding part 43 to prevent the second sliding part 43 from wobbling along the second direction y during sliding, thereby improving the stability and reliability of the second sliding part 43 during the sliding process.

[0150] In one specific implementation, such as Figure 7 As shown, the fixture also includes a third limiting block 53, which includes a first limiting part 531 and two second limiting parts 532. The first limiting part 531 is located between the two second limiting parts 532 and is spaced apart from the two second limiting parts 532.

[0151] When the clamp is in the locked state, along the first direction x, the first limiting part 531 abuts against the positioning post 8, and the second limiting part 532 abuts against the third body 41 to restrict the movement between two adjacent third bodies 41 along the third direction z.

[0152] In this embodiment, the third limiting block 53 is used to fix the two third bodies 41 to the positioning column 8, which can lock the working state of the second contouring mechanism 4, avoid the risk of automatic reset of the second contouring mechanism 4 during processing, so as to ensure the safety and reliability of the processing process, and also ensure that the second contouring mechanism 4 and the first contouring mechanism 3 apply a stable holding force to the workpiece 10, so as to improve the installation stability of the workpiece 10 during processing.

[0153] Specifically, when the third body 41 moves along the third direction z toward the center of the base plate 1 to the processing part 42 and the mounting part 33 for connection, both third bodies 41 are in contact with the side wall of the positioning post 8 along the third direction z, and the second contouring mechanism 4 and the first contouring mechanism 3 clamp the workpiece 10 along the second direction y and the third direction z. At this time, the third limiting block 53 can be fixedly connected to the positioning post 8 to lock the working state of the second contouring mechanism 4.

[0154] The third limiting block 53 includes a first limiting portion 531 and a second limiting portion 532 spaced apart, such that the gap between the first limiting portion 531 and any of the second limiting portions 532 can form a receiving space for accommodating the third body 41. For example, when the first limiting portion 531 is fixedly connected to the positioning post 8 along the first direction x, the two second limiting portions 532 can respectively abut against the sidewalls of the two third bodies 41 in the direction towards the edge of the base plate 1, thereby restricting the movement of the third body 41 in the direction towards the edge of the base plate 1, thereby improving the structural stability of the second contouring structure 4 during the processing.

[0155] Meanwhile, along the first direction x, one of the second limiting part 532 and the third body 41 has a second mating surface (not shown in the figure), and the other has a third mating surface (not shown in the figure). The second mating surface and the third mating surface are parallel to each other, and both can be inclined relative to the upper surface of the base plate 1.

[0156] With this design, the third limiting block 53 can simultaneously pull the two third bodies 41 to move along the third third direction z toward the center of the base plate 1 while moving along the first direction x toward the direction close to the positioning post 8. It can also simultaneously release the restriction on the two third bodies 41 while moving along the first direction x away from the positioning post 8, so that the two can automatically reset under the push of the third elastic member 73.

[0157] In one possible implementation, the third limiting block 53 can be an E-shaped structure or a mountain-shaped structure, which makes it easy to process and helps to reduce the production cost and efficiency of the fixture.

[0158] In one specific implementation, such as Figure 1 , Figure 4 and Figure 7 As shown, the clamp also includes a guide post 9, which is mounted on the base plate 1 and is disposed adjacent to the bottom pressure block 11. The top pressure block 2 also has a first through hole 21. When the clamp is in the clamping state, at least a portion of the guide post 9 is located in the first through hole 21.

[0159] In this embodiment, by setting the guide post 9 adjacent to the bottom pressure block 11, the top pressure block 2 can be connected to the guide post 9 through the first through hole 21 during the movement of the top pressure block 2 toward the bottom plate 1 in the first direction x. This allows the guide post 9 to guide the movement of the top pressure block 2, thereby avoiding the risk of the top pressure block 2 shifting or tilting during the movement in the first direction x. This ensures that the top pressure block 2 can move in a straight line during the pressing process, which helps to improve the fitting accuracy between the top pressure block 2 and the bottom pressure block 11.

[0160] When the top pressure block 2 and the bottom pressure block 11 are connected, the clamping force of the two on the workpiece 10 can be evenly distributed on the surface of the workpiece 10, so as to avoid the risk of local stress concentration in the workpiece 10 during the processing, thereby reducing the possibility of deformation or damage to the workpiece 10 during the processing, and thus improving the safety and reliability of the processing.

[0161] Meanwhile, during the processing, the guide post 9 can also restrict the movement of the top pressure block 2 along the second direction y and the third direction z, which helps to improve the clamping effect of the top pressure block 2 and the bottom pressure block 11 on the workpiece 10, reduce the possibility of the workpiece 10 shaking, and ensure the processing quality and yield of the product.

[0162] In addition, during the installation of workpiece 10, guide post 9 can also penetrate workpiece 10 along the first direction x to further reduce the risk of workpiece 10 shifting during processing, improve the stability of workpiece 10 installation, and ensure safety and reliability during processing.

[0163] In one specific implementation, such as Figure 1 As shown, the guide post 9 includes a base 91 and a guide part 92. The base 91 is fixedly connected to the base plate 1, and the guide part 92 is connected to the side of the base 91 facing the top pressure block 2 along the first direction x. The base 91 and the guide part 92 are detachably connected.

[0164] In this embodiment, by configuring the guide post 9 as a detachably connected base 91 and guide part 92, both the base 91 and guide part 92 can be independent components. This allows for replacement of only the guide part 92 after wear or damage, reducing material waste and improving both maintenance efficiency and cost. Furthermore, the base 91 can serve as a universal base, enabling operators to select guide parts 92 of different sizes based on the workpiece 10's parameters (e.g., material or thickness). This ensures high fitting accuracy between the guide post 9 and different workpieces 10, improving installation stability and allowing the fixture to meet diverse production needs, thus enhancing its versatility and flexibility.

[0165] In summary, when the fixture is in its initial state, the top pressure block 2 is positioned above the bottom pressure block 11 along the first direction x, with a gap between them; the second body 32 of the first contouring mechanism 3 is located near the center of the base plate 1, and the second mounting portion 332 of the second body 32 is located within the projection range of the first mounting portion 331 of the first body 31; the two third bodies 41 of the second contouring mechanism 4 are located near the edge of the base plate 1, with a gap between them and the positioning post 8, so that there are gaps between the first body 31, the second body 32, and the third body 41, forming an operating space for installing or removing the workpiece 10. At this time, the second elastic element 72 and the third elastic element 73 are both in their initial state; the upper surface of the drive block 6 abuts against the head 622 of the limit rod 62, the lower surface of the drive block 6 has a gap with the base plate 1, the first mating surface 64 of the drive block 6 abuts against the inner sidewall of the second body 32, and the locking element on the drive block 6 is in the unlocked state.

[0166] During the clamping process of the fixture, the operator can first position the workpiece 10 before it is sleeved by the guide post 9 and make the workpiece 10 cover the bottom pressure block 11. Then, a part of the workpiece 10 is sleeved on the first mounting part 331 of the first body 31. At this time, the other part of the workpiece 10 is in a suspended state.

[0167] After the workpiece 10 is fitted onto the first mounting part 331, the operator can lock the locking member of the drive block 6 through the second through hole 101 of the workpiece 10. This causes the locking member to drive the drive block 6 to move along the first direction x toward the direction closer to the base plate 1. At the same time, the drive block 6 pushes the second body 32 to move along the third direction z toward the direction closer to the edge of the base plate 1. During the movement of the drive block 6, the part of the workpiece 10 that is suspended is gradually supported by the second mounting part 332. The first elastic member 71 located in the receiving cavity 61 is compressed and contracts, generating a restoring force. The second elastic member 72 located in the first groove 12 is compressed and contracts, generating a restoring force, until the lower surface of the drive block 6 abuts against the base plate 1 and stops moving. At this time, the locking member is in a locked state. The outer surface of the second mounting part 332 of the second body 32 is flush with the outer surface of the first mounting part 331 of the first body 31 to form the mounting part 33 of the first contouring mechanism 3, so as to realize the installation of the workpiece 10 on the first contouring mechanism 3.

[0168] After the workpiece 10 is installed on the first contouring mechanism 3, the operator can push the two third bodies 41 to move along the third direction z towards the center of the base plate 1. During the movement of the third bodies 41, the third elastic element 73 located in the second groove 13 is compressed and contracts, generating a restoring force until the two third bodies 41 are in contact with the positioning post 8 and stop moving. The two third bodies 41 and the positioning post 8 are then limited and connected by the third limiting block 53. At this time, the second contouring mechanism 4 is in a locked state and clamps the workpiece 10 along the second direction y and the third direction z through the processing part 42 and the mounting part 33 of the first contouring mechanism 3.

[0169] After the first contouring mechanism 3 and the second contouring mechanism 4 are connected, the operator can control the top pressure block 2 to move along the first direction x toward the bottom plate 1. During the movement of the top pressure block 2, the top pressure block 2 can move along the extension direction of the guide part 92 through the first through hole 21 until the top pressure block 2 and the bottom pressure block 11 clamp the workpiece 10 along the first direction x and then stop moving. At this time, the fixture completes the locking of the workpiece 10, and the operator can control the processing equipment to process the workpiece 10 through the processing part 42 of the second contouring mechanism 4.

[0170] After the workpiece 10 is processed, the top pressure block 2 can be reset first to release the clamp on the workpiece 10 along the first direction x. Then, the third limiting block 53 can be removed so that the third body 41 is reset under the push of the third elastic member 73 to release the clamp on the workpiece 10 along the second direction y and the third direction z. Then, the locking member on the drive block 6 can be unlocked through the second through hole 101 of the workpiece 10 so that the drive block 6 is reset under the push of the first elastic member 71, and the second body 32 is reset synchronously under the push of the second elastic member 72 to release the support of the first contouring mechanism 3 on the workpiece 10. At the same time, the operating space for installing or removing the workpiece 10 is opened so that the operator can perform the operation.

[0171] Therefore, the fixture in this embodiment can achieve multi-directional fixation of the workpiece 10, thereby improving the fixation effect of the workpiece 10 and avoiding the risk of local bulges or depressions on the surface of the workpiece 10 due to the influence of cutting forces during processing. This is beneficial to improving the processing accuracy of the processing equipment on the workpiece 10, as well as the safety and reliability of the processing process, which in turn is beneficial to improving the quality and yield of the product. Furthermore, the multi-directional fixation method can also shorten the clamping and positioning time of the workpiece 10, which is beneficial to improving the production efficiency of the product. In addition, when the workpiece 10 is made of a flexible material (such as rubber, silicone, and film), by setting the top surface of the bottom pressure block 11 and the bottom surface of the top pressure block 2 as mutually cooperating arc surface structures, and setting the first contouring mechanism 3 and the second contouring mechanism 4 as mutually cooperating annular arc surface structures, it is possible not only to increase the contact area between the fixture and the workpiece 10 to improve the uniformity of the clamping force applied by the fixture to the workpiece 10, but also to better fit the curved surface structure of the workpiece 10 to improve the stability and reliability of the fixture in clamping the workpiece 10, and avoid the risk of local stress concentration during processing of the workpiece 10 leading to surface deformation or damage, thereby improving the overall integrity of the product.

[0172] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this application. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. A clamp for clamping a workpiece, characterized in that, The clamp includes: The base plate (1) is provided with a bottom pressure block (11); Top pressure block (2), the top pressure block (2) is located on the side of the bottom pressure block (11) away from the bottom plate (1), the top surface of the bottom pressure block (11) and the bottom surface of the top pressure block (2) are mutually cooperating arc surface structures; The first contouring mechanism (3) and the second contouring mechanism (4) are both installed on the base plate (1). The first contouring mechanism (3) is located outside the bottom pressure block (11), and the second contouring mechanism (4) is located outside the first contouring mechanism (3). The first contouring mechanism (3) also has an installation part (33), and the second contouring mechanism (4) also has a processing part (42). The installation part (33) and the processing part (42) are mutually cooperating annular arc surface structures.

2. The clamp according to claim 1, characterized in that, The first contouring mechanism (3) includes a first body (31) and a second body (32). The first body (31) is distributed on opposite sides of the bottom pressure block (11) and is fixedly connected to the bottom plate (1). The second body (32) is distributed on opposite sides of the bottom pressure block (11) and is slidably connected to the bottom plate (1). The mounting part (33) further includes a first mounting part (331) and a second mounting part (332), wherein the first mounting part (331) is connected to the first body (31) and the second mounting part (332) is connected to the second body (32); When the clamp is in the initial state, the second mounting part (332) is located within the projection range of the first mounting part (331). When the clamp is in the clamping state, the second mounting part (332) is flush with the outer surface of the first mounting part (331).

3. The clamp according to claim 2, characterized in that, The first contouring mechanism (3) further includes a first sliding part (34) connected to the second body (32), the first sliding part (34) being slidably connected to the base plate (1), the clamp further includes a first limiting block (51), the first limiting block (51) being fixedly connected to the base plate (1), and at least a portion of the first limiting block (51) abutting against the upper surface of the first sliding part (34).

4. The clamp according to claim 1, characterized in that, The fixture also includes a drive block (6), which is mounted on the base plate (1). The drive block (6) is located inside the first contouring mechanism (3). The drive block (6) abuts against the inner wall of the first contouring mechanism (3) through a first mating surface (64), and the first mating surface (64) is inclined relative to the base plate (1).

5. The clamp according to claim 4, characterized in that, The drive block (6) further includes a receiving cavity (61), a limiting rod (62) and a first elastic member (71). The limiting rod (62) includes a connected rod portion (621) and a head (622). The receiving cavity (61) is used to receive at least a portion of the first elastic member (71) and the rod portion (621). The rod (621) passes through the receiving cavity (61) and is fixedly connected to the bottom plate (1). The first elastic element (71) is sleeved on the outer wall of the rod (621), and one end of the first elastic element (71) is connected to the bottom plate (1), and the other end is connected to the bottom wall of the receiving cavity (61). When the clamp is in the initial state, the first elastic element (71) is in the initial state, the upper surface of the drive block (6) abuts against the head (622), and the lower surface of the drive block (6) is separated from the base plate (1). When the clamp is in the clamping state, the first elastic element (71) is in the compressed state, the upper surface of the drive block (6) is separated from the head (622), and the lower surface of the drive block (6) abuts against the base plate (1).

6. The clamp according to claim 1, characterized in that, The clamp also includes a positioning post (8), which is mounted on the base plate (1) and distributed on both sides of the first contouring mechanism (3). The second contouring mechanism (4) also includes a third body (41), which is distributed on both sides of the positioning post (8) and is slidably connected to the base plate (1). When the fixture is in the initial state, the third body (41) is separated from the positioning post (8), and the processing part (42) is disengaged from the mounting part (33). When the fixture is in the clamping state, the third body (41) is attached to the positioning post (8), and the processing part (42) is connected to the mounting part (33).

7. The clamp according to claim 6, characterized in that, The second contouring mechanism (4) further includes a second sliding part (43) connected to the third body (41), the second sliding part (43) being slidably connected to the base plate (1), the clamp further includes a second limiting block (52), the second limiting block (52) being fixedly connected to the base plate (1), and at least a portion of the second limiting block (52) abutting against the upper surface of the second sliding part (43).

8. The clamp according to claim 6, characterized in that, The clamp also includes a third limiting block (53), which includes a first limiting part (531) and two second limiting parts (532). The first limiting part (531) is located between the two second limiting parts (532) and is spaced apart from the two second limiting parts (532). When the clamp is in the locked state, the first limiting part (531) abuts against the positioning post (8), and the second limiting part (532) abuts against the third body (41) to restrict the movement between two adjacent third bodies (41).

9. The clamp according to any one of claims 1-8, characterized in that, The clamp also includes a guide post (9), which is mounted on the base plate (1) and is disposed adjacent to the bottom pressure block (11). The top pressure block (2) also has a first through hole (21). When the clamp is in a clamping state, at least a portion of the guide post (9) is located in the first through hole (21).

10. The clamp according to claim 9, characterized in that, The guide post (9) includes a base (91) and a guide part (92). The base (91) is fixedly connected to the base plate (1). The guide part (92) is connected to the side of the base (91) facing the top pressure block (2). The base (91) and the guide part (92) are detachably connected.

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