Simple fixture for frame-shaped workpieces

Abstract

The utility model relates to the technical fields of frame -shaped workpiece clamp especially to a simple fixture for frame -shaped workpiece, including bottom plate, the datum positioning part, a plurality of clamping mechanisms and rotating assembly of being located on the bottom plate, be equipped with several receiving cavities of head -to -tail on the bottom plate, form the fixed position of the adaptation with frame -shaped workpiece outer periphery through each receiving cavity, wherein several receiving cavities include first receiving cavity and second receiving cavity, fix metal strip through first receiving cavity and second receiving cavity, and each metal strip head -to -tail is favorable to the welding and forms frame -shaped workpiece, and the metal strip is fixed through clamping mechanism, rotating assembly is located in the bottom part of bottom plate, drives bottom plate to rotate through rotating assembly, to drive the clamping mechanism on bottom plate and its fixed workpiece rotation to facilitate the operator to rotate bottom plate directly in the welding process, to make workpiece change different welding position, can promote the welding efficiency, can guarantee the welding quality of workpiece simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of frame-shaped workpiece clamps, and in particular to a simple clamp for frame-shaped workpieces. Background Technology

[0002] Metal frame-shaped workpieces are typically formed by splicing multiple metal strips end-to-end and then welding the joints of adjacent strips. Welding is a crucial process in the forming of frame-shaped workpieces, and its quality directly affects the mechanical properties and appearance consistency of the finished product. Frame-shaped workpieces are prone to deformation during welding due to uneven heating, especially rectangular and square workpieces. Symmetrical welding is usually employed; after the metal strips are assembled into a frame shape, opposite sides are welded first, followed by the remaining sides, to prevent deformation. However, in small and medium-sized factories, the fixtures used are usually fixed. After welding one corner of a workpiece, the operator needs to move to the opposite side to continue welding. This constant movement during the welding process affects welding efficiency.

[0003] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0004] This utility model addresses the problem mentioned above that the fixtures used in small and medium-sized factories are usually fixed, requiring operators to move around to change welding positions, which affects welding efficiency. It proposes a simple fixture for frame-shaped workpieces.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A simple fixture for frame-shaped workpieces, comprising:

[0007] The base plate has a plurality of accommodating cavities connected end to end. There is a preset angle between two adjacent accommodating cavities. Each accommodating cavity forms a fixed position that is adapted to the outer periphery of the frame-shaped workpiece. The plurality of accommodating cavities include a first accommodating cavity and a second accommodating cavity.

[0008] A reference positioning part is disposed on the base plate and located on one side of the first receiving cavity;

[0009] Multiple clamping mechanisms are disposed on the base plate and distributed around the fixed position. The multiple clamping mechanisms include a first clamping mechanism and a second clamping mechanism. At least one first clamping mechanism is disposed opposite to the reference positioning part along the width direction of the first receiving cavity. At least two sets of second clamping mechanisms are disposed opposite to each other along the width direction of any of the second receiving cavities. Each clamping mechanism is provided with a clamping part, and the clamping part of each clamping mechanism can move toward or away from the fixed position.

[0010] A rotating assembly is located at the lower part of the base plate, and the base plate is driven to rotate by the rotating assembly.

[0011] As described above, a simple clamp for a frame-shaped workpiece includes a rotating assembly comprising a mounting base located on the lower part of the base plate, an assembly cavity located within the mounting base, and a rotating connector connected to the mounting base.

[0012] As described above, in a simple fixture for a frame-shaped workpiece, the rotating connector extends at least partially to the underside of the assembly cavity.

[0013] As described above, a simple clamping fixture for a frame-shaped workpiece includes a limiting bracket on the base plate and an adjusting member movably passing through the limiting bracket. The clamping part is provided at one end of the adjusting member facing the fixed position. By moving the adjusting member relative to the limiting bracket, the clamping part can be moved closer to or away from the fixed position.

[0014] As described above, a simple clamp for a frame-shaped workpiece includes a driving part at one end of each adjusting member away from the clamping part, a space between the driving part and the base plate, an external thread on the outer wall of the adjusting member, and an internal thread in the adjusting hole that is adapted to the external thread.

[0015] As described above, in a simple fixture for a frame-shaped workpiece, the reference positioning part is disposed near the edge of the base plate and extends along the edge of the base plate, and the height of the reference positioning part is greater than or equal to the height of the frame-shaped workpiece.

[0016] As described above, a simple clamp for a frame-shaped workpiece includes several accommodating cavities, each of which includes a third accommodating cavity located on one side of any of the second accommodating cavities. The multiple clamping mechanisms also include at least two sets of third clamping mechanisms. The two sets of third clamping mechanisms are arranged opposite each other along the width direction of the third accommodating cavity, and the two adjacent sets of second clamping mechanisms and the two sets of third clamping mechanisms are staggered.

[0017] As described above, a simple clamping fixture for a frame-shaped workpiece further includes a clamping assembly. Several clamping assemblies are provided on one side of the fixing position, and at least one clamping assembly is provided on one side of any of the receiving cavities. The clamping assembly includes a connecting bracket provided on the base plate and a pressing member rotatably provided on the connecting bracket. The pressing member is located above the fixing member. By rotating the pressing member relative to the connecting bracket, the pressing member clamps the frame-shaped workpiece with the base plate.

[0018] As described above, a simple clamp for a frame-shaped workpiece includes a connecting bracket with a spiral hole on its outer wall and a limiting hole communicating with the spiral hole. The spiral hole extends downward in the connecting bracket along the axial direction, and the limiting hole extends vertically downward from the bottom of the spiral hole. The top pressing member includes a rod body disposed within the connecting bracket, a positioning block disposed outside the rod body, and a pressure plate disposed at the top of the rod body. The positioning block is adapted to the spiral hole and the limiting hole. By moving the positioning block from the top of the spiral hole into the limiting hole, the rod body drives the pressure plate to rotate and move downward relative to the connecting bracket, thereby clamping the frame-shaped workpiece with the pressure plate.

[0019] As described above, a simple clamp for a frame-shaped workpiece has a gripping part on at least one side of the outer periphery of the base plate.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model provides a simple fixture for frame-shaped workpieces, including a base plate, a reference positioning part, multiple clamping mechanisms, and a rotating assembly on the base plate. The base plate has several accommodating cavities connected end to end, with a preset included angle between adjacent accommodating cavities. Each accommodating cavity forms a fixed position adapted to the outer periphery of the frame-shaped workpiece. The accommodating cavities include a first accommodating cavity and a second accommodating cavity. Metal strips are fixed through the first accommodating cavity and the second accommodating cavity. Each second accommodating cavity is sequentially arranged end to end on one side of the first accommodating cavity, so that multiple metal strips can be fixed in their respective accommodating cavities. The end-to-end connection of the metal strips facilitates welding to form a frame-shaped workpiece. The clamping mechanisms clamp and fix the metal strips. The rotating assembly is located at the lower part of the base plate. The rotating assembly drives the base plate to rotate, thereby driving the clamping mechanisms on the base plate and the workpieces fixed thereto to rotate. This allows the operator to directly rotate the base plate during the welding process to change the welding position of the workpiece, thereby improving welding efficiency and ensuring the welding quality of the workpiece.

[0022] 2. The reference positioning part is located on one side of the first receiving cavity, so that the first receiving cavity forms a positioning reference cavity, which is conducive to the rapid positioning of the metal strip on the base plate, and the welding reference is unified through the reference positioning part to improve the welding accuracy of the workpiece.

[0023] 3. Multiple clamping mechanisms are distributed around the fixed position, including a first clamping mechanism and a second clamping mechanism. At least one first clamping mechanism is arranged opposite to the reference positioning part along the width direction of the first receiving cavity. At least two sets of second clamping mechanisms are arranged opposite to each other along the width direction of any second receiving cavity. Each clamping mechanism is provided with a clamping part. The clamping part of each clamping mechanism can move closer to or further away from the fixed position. By moving the clamping part of the first clamping mechanism relative to the first receiving cavity, the distance between the clamping part of the first clamping mechanism and the reference positioning part can be adjusted. This can be adapted to the use of metal strips of different specifications. The metal strip is clamped by the first clamping mechanism and the reference positioning part to fix the metal strip, which facilitates the welding work and prevents the metal strip from deforming.

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a perspective view of the clamp of this utility model;

[0026] Figure 2 Top view of the clamp of this utility model Figure 1 ;

[0027] Figure 3 Top view of the clamp of this utility model Figure 2 ;

[0028] Figure 4 for Figure 3 Sectional view A-A (with clamping and clamping components hidden);

[0029] Figure 5 This is a perspective view of the clamping assembly of this utility model in its clamping state;

[0030] Figure 6 for Figure 5 The front view in the middle;

[0031] Figure 7 This is a perspective view of the loosened state of the clamping component of this utility model. Detailed Implementation

[0032] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] like Figure 1As shown in Figure 7, this utility model provides a simple clamp for a frame-shaped workpiece. The clamp includes a base plate 1, a reference positioning part 13 disposed on the base plate 1, multiple clamping mechanisms, and a rotating assembly 3. The base plate 1 has several end-to-end receiving cavities, and each adjacent receiving cavity has a preset included angle. The receiving cavities form a fixed position 12 that adapts to the outer periphery of the frame-shaped workpiece. The receiving cavities include a first receiving cavity 11a and a second receiving cavity 11b, through which metal strips are fixed. The reference positioning part 13... The first receiving cavity 11a is located on one side, forming a positioning reference cavity, which facilitates the rapid positioning of the metal strip on the base plate 1. The reference positioning part 13 unifies the welding reference, thereby improving the welding accuracy of the workpiece. Each second receiving cavity 11b is sequentially located end-to-end on one side of the first receiving cavity 11a, allowing multiple metal strips to be fixed in their respective receiving cavities. The end-to-end connection of the metal strips facilitates welding to form a frame-shaped workpiece. Multiple clamping mechanisms are distributed around the fixing position 12, including a first clamping mechanism 2a and a second clamping mechanism 2b. Two clamping mechanisms 2b are provided. At least one first clamping mechanism 2a is arranged opposite to the reference positioning part 13 along the width direction of the first receiving cavity 11a. At least two sets of second clamping mechanisms 2b are arranged opposite to each other along the width direction of any of the second receiving cavities 11b. Each clamping mechanism is provided with a clamping part 222. The clamping part 222 of each clamping mechanism can move closer to or further away from the fixed position 12. By moving the clamping part 222 of the first clamping mechanism 2a relative to the first receiving cavity 11a, the clamping part 222 of the first clamping mechanism 2a and the reference positioning part 13 can be adjusted. The spacing of the positioning parts 13 can accommodate metal strips of different specifications. The metal strip is clamped by the first clamping mechanism 2a and the reference positioning parts 13 to fix it, facilitating welding and preventing deformation. The rotating assembly 3 is located at the lower part of the base plate 1. The rotating assembly 3 drives the base plate 1 to rotate, thereby rotating the clamping mechanism on the base plate 1 and the workpiece it fixes. This allows the operator to directly rotate the base plate 1 during welding to change the welding position of the workpiece, improving welding efficiency and ensuring welding quality. It should be noted that the width direction of the receiving cavity is consistent with the thickness direction of the metal strip.

[0036] In practical applications, the frame-shaped workpiece can be a rectangular frame-shaped workpiece or other polygonal frame-shaped workpieces. The number of receiving cavities can be set according to the number of sides of the frame-shaped workpiece. Multiple metal strips of the frame-shaped workpiece are fixed through each of the receiving cavities, and then the connection between two adjacent metal strips is welded to form the finished frame-shaped workpiece. For example, such as Figure 1As shown in Figure 3, the receiving cavity may have four, one of which forms a first receiving cavity 11a. The first receiving cavity 11a is used to fix the first side of the frame-shaped workpiece. The reference positioning part 13 forms a side wall of the first receiving cavity 11a. The first clamping mechanism 2a is arranged opposite to the reference positioning part 13. The operator can adjust the width of the first receiving cavity 11a by adjusting the first clamping mechanism 2a and fix the metal strip by the first clamping mechanism 2a. The other three receiving cavities form second receiving cavities 11b at different positions and are used to fix the second, third, and fourth sides of the frame-shaped workpiece, respectively. The first receiving cavity 11a and the three second receiving cavities 11b are combined to form a fixing position 12 adapted to the rectangular frame-shaped workpiece. Each second receiving cavity 11b has two opposing second clamping mechanisms 2b on both sides. The two clamping mechanisms 2b form a double-sided adjustable clamping mechanism, which can apply a balanced clamping force from both sides of the metal strip, avoiding tilting or displacement of the metal strip caused by single-sided clamping, and ensuring that the metal strip is in a stable centered state within the receiving cavity. It is especially suitable for metal strips of different widths. By adjusting the two second clamping mechanisms 2b, it can adapt to metal strips of various sizes, eliminating the need to design separate fixtures for metal strips of different specifications, improving the versatility of the fixture, reducing the investment cost of the fixture, and making the modification difficult and low-cost, so that it can be quickly put into production, thereby meeting the needs of low-cost transformation of factories. In addition, in some optional embodiments, the fixture also includes a corner positioning plate and a long strip positioning plate detachably mounted on the base plate 1. The corner positioning plate and the long strip positioning plate can correspond to the inner and outer sides of the frame-shaped workpiece, respectively, which is beneficial to further improve the positioning accuracy of the metal strip, thereby improving the processing accuracy of the frame-shaped workpiece.

[0037] Further optional, such as Figure 1 As shown, the first clamping mechanism 2a can be provided in several forms and evenly distributed along the length direction of the first receiving cavity 11a. The second clamping mechanism 2b on both sides of any second receiving cavity 11b can be provided in one set or several sets and evenly distributed along the length direction of the corresponding receiving cavity, so as to improve the clamping force on the metal strip and avoid the frame-shaped workpiece from easily deforming during welding.

[0038] Further optional, such as Figure 1As shown, the reference positioning part 13 is disposed near the edge of the base plate 1 and extends along the edge of the base plate 1. The height of the reference positioning part 13 is greater than or equal to the height of the frame-shaped workpiece. Specifically, the reference positioning part 13 is configured as a positioning plate and extends along one side edge of the base plate 1. By setting a longer reference positioning part 13, it can adapt to metal strips of different lengths, which is beneficial to improving the adaptability and versatility of the fixture. It eliminates the need for frequent fixture replacement and greatly reduces the production cost of the frame-shaped workpiece. In addition, the fact that the reference positioning part 13 is disposed near one side edge of the base plate 1 can improve the space utilization rate on the base plate 1, which is beneficial to providing sufficient layout space for multiple second receiving cavities 11b.

[0039] As an optional embodiment of the rotating component 3, such as Figure 4 As shown, the rotating assembly 3 includes a mounting base 31 located at the lower part of the base plate 1, an assembly cavity 32 located within the mounting base 31, and a rotating connector 33 connected to the mounting base 31. The rotating connector 33 is at least partially fitted within the assembly cavity 32. Specifically, the mounting base 31 extends downward from the bottom of the base plate 1, the assembly cavity 32 is recessed upward from the bottom of the mounting base 31 and is open downward. At least a portion of the rotating connector 33 is located within the assembly cavity 32. The rotating connector 33 is fitted within the assembly cavity 32, and the base plate 1 can rotate via the rotating connector 33 when pushed by human force or mechanical force. Optionally, the rotating connector 33 can be entirely placed within the assembly cavity 32 and fixedly installed on a component in the production site to enable the fixture to rotate. Alternatively, as... Figure 4 As shown, the bottom of the rotating connector 33 protrudes downwards to the outside of the assembly cavity 32, allowing the fixture to be placed directly on a flat surface to achieve rotation. The fixture utilizes the rotating connector 33 to achieve rotation, which has a simple structure, low production cost, and is easy to implement. Optionally, the rotating connector 33 can be set as a bearing component, such as a thrust ball bearing, roller bearing, slewing bearing, sliding bearing, etc., which has a simple structure and can reduce the manufacturing and maintenance costs of the fixture.

[0040] Further optionally, in order to reduce the thickness of the base plate 1 and ensure that the contact surface between the base plate 1 and the workpiece remains flat, the mounting base 31 can be welded to the lower part of the base plate 1. The mounting base 31 and the base plate 1 form an integral structure, which is beneficial to improving the structural strength of the fixture body.

[0041] As an optional embodiment of the clamping mechanism, such as Figure 1As shown, each clamping mechanism includes a limiting bracket 21 mounted on the base plate 1 and an adjusting member 22 movably passing through the limiting bracket 21. The adjusting member 22 has a clamping portion 222 at one end facing the fixed position 12. The clamping portion 222 moves closer to or further away from the fixed position 12 by moving the adjusting member 22 relative to the limiting bracket 21. Specifically, the limiting bracket 21 is mounted on the upper part of the base plate 1, and the adjusting hole passes through the limiting bracket 21. The extension direction of the adjusting hole... The adjusting member 22 is aligned with the width direction of the receiving cavity. It is connected to the adjusting hole from the side away from the receiving cavity. The adjusting member 22 can move closer to or away from the corresponding receiving cavity relative to the limiting bracket 21 under external force, so as to facilitate the operator to adjust the clamping mechanism. The clamping mechanism has a simple structure, low production and maintenance costs, low operation difficulty, and is easy to adjust. In addition, the clamping mechanism is small in size, which helps to reduce the overall volume of the fixture, thereby making it easier for the operator to move the fixture.

[0042] Furthermore, such as Figure 1 As shown, each of the adjusting members 22 has a driving part 221 at one end away from the clamping part 222. A gap is provided between the driving part 221 and the base plate 1. The outer wall of the adjusting member 22 has an external thread, and the adjusting hole has an internal thread that matches the external thread. The adjusting member 22 and the adjusting hole are connected by a thread to allow the adjusting member 22 to move along the adjusting hole relative to the corresponding receiving cavity. Specifically, the driving part 221 can be configured as a butterfly driving part 221, a circular driving part 221, or an annular driving part 221, etc., allowing the operator to... The drive unit 221 manually drives the adjusting member 22 to move relative to the limiting bracket 21, which helps to reduce the difficulty of adjusting the clamping mechanism for operators and improves the convenience of adjustment for operators. Moreover, the manual drive method significantly reduces the manufacturing cost and maintenance difficulty of the fixture, making it suitable for small and medium-sized factories to manufacture and modify fixtures independently. Furthermore, the manual drive method simplifies the external connection structure of the fixture, which is conducive to the fixture being directly rotated axially through the rotating component 3. In addition, by forming a gap space between the drive unit 221 and the base plate 1, sufficient operating space can be provided for the operator.

[0043] Optionally, each of the limiting brackets 21 can be welded onto the base plate 1.

[0044] Alternatively, each of the limiting brackets 21 can be detachably mounted on the base plate 1. Specifically, each of the limiting brackets 21 can be provided with connecting ears on both sides. Each of the connecting ears is mounted on the base plate 1 by screws, bolts or other connecting parts. Correspondingly, the base plate 1 can be provided with threaded mounting holes corresponding to the connecting ears, which is beneficial for production personnel to flexibly set the position of the clamping mechanism.

[0045] In another alternative embodiment of the clamp, such as Figure 3 As shown, the plurality of receiving cavities also include a third receiving cavity 11c disposed on one side of any of the second receiving cavities 11b, and the plurality of clamping mechanisms also include at least two sets of third clamping mechanisms 2c, the two sets of third clamping mechanisms 2c being arranged opposite each other along the width direction of the third receiving cavity 11c, and the two adjacent sets of second clamping mechanisms 2b and the two sets of third clamping mechanisms 2c being staggered; specifically, the position of the two sets of third clamping mechanisms 2c can be set according to different frame-shaped workpiece sizes, for example, two sets of third clamping mechanisms 2c can be provided, the two sets of third clamping mechanisms 2c being disposed on one side of two corresponding sets of second clamping mechanisms 2b, such as... Figure 3 As shown, two sets of second clamping mechanisms 2b are provided on both sides of the second side of the frame-shaped workpiece. A third clamping mechanism 2c, arranged opposite to each other on both sides, is provided inside these two sets of second clamping mechanisms 2b to facilitate the rapid processing of the welded workpiece using frame-shaped workpieces with significantly different dimensions. The third clamping mechanism 2c can be structurally similar to the first clamping mechanism 2a and the second clamping mechanism 2b. In this embodiment, the fixture is equipped with a modular clamping mechanism, which further reduces the manufacturing cost of the fixture and facilitates its modification. Furthermore, by staggering the two sets of third clamping mechanisms 2c with the two sets of second clamping mechanisms 2b, sufficient space is provided for the operator to adjust the adjusting component 22, avoiding structural interference. It should be noted that the structures of the second clamping mechanism 2b and the third clamping mechanism 2c are similar to... Figure 1 The mechanism is the same as that of the first clamping mechanism 2a, and will not be described again here.

[0046] In another alternative embodiment of the clamp, such as Figure 2 and Figure 5As shown in Figure 7, the clamp also includes a clamping assembly 4. Several clamping assemblies 4 are provided on one side of the fixing position 12, and at least one clamping assembly 4 is provided on one side of any of the receiving cavities. The clamping assembly 4 includes a connecting bracket 41 provided on the base plate 1 and a pressing member 42 rotatably provided on the connecting bracket 41. The pressing member 42 is located above the fixing member. By rotating the pressing member 42 relative to the connecting bracket 41, the pressing member 42 clamps the frame-shaped workpiece with the base plate 1. Specifically, the pressing member 42 is located near the top of the connecting bracket 41 so that the pressing member 42 can be located above the frame-shaped workpiece. The pressing member 42 and the base plate 1 clamp and fix the frame-shaped workpiece longitudinally. Combined with multiple clamping mechanisms to clamp and fix the frame-shaped workpiece laterally, the clamping and fixing of the frame-shaped workpiece by the clamp can be further enhanced, avoiding easy deformation of the frame-shaped workpiece during welding and ensuring the welding quality of the frame-shaped workpiece.

[0047] Furthermore, such as Figure 5As shown in Figure 7, the outer wall of the connecting bracket 41 is provided with a spiral hole 411 and a limiting hole 412 communicating with the spiral hole 411. The spiral hole 411 extends spirally downward in the connecting bracket 41, and the limiting hole 412 extends vertically downward from the bottom of the spiral hole 411. The top pressing member 42 includes a rod body 421 disposed inside the connecting bracket 41, a positioning member 422 disposed outside the rod body 421, and a pressure plate 423 disposed on the top of the rod body 421. The positioning member 422 communicates with the spiral hole 411 and the limiting hole 412. The positioning hole 412 is adapted to the positioning member 422, which moves from the top of the spiral hole 411 to the limiting hole 412, so that the rod body 421 drives the pressure plate 423 to rotate and move downward relative to the connecting bracket 41, thereby clamping the frame-shaped workpiece with the pressure plate 423. In this embodiment, the connecting bracket 41 is installed on the base plate 1, and the connecting bracket 41 is set as a hollow bracket. The rod body 421 of the top pressing member 42 is inserted into the connecting bracket 41, and the positioning member 422 is movably extended into the spiral hole 411. The pressure plate 423 is fixedly installed on the top of the rod body 421 and located outside the connecting bracket 41. An operator can apply force to the pressure plate 423 to cause the rod body 421 to rotate and move along the spiral hole 411 via the positioning member 422. This allows the top pressing member 42 to rotate 90° relative to the connecting bracket 41 and press down on the frame-shaped workpiece. The top pressing member 42 and the base plate 1 clamp the frame-shaped workpiece longitudinally. In practical applications, when the positioning member 422 is at the top of the spiral hole 411, the pressure plate 423 and the fixed... Positions 12 are staggered to facilitate the assembly and disassembly of the frame-shaped workpiece; when the positioning member 422 is in the limiting hole 412, the pressure plate 423 contacts the frame-shaped workpiece to clamp it, and at the same time, the top surface of the limiting hole 412 forms a limiting wall opposite to the positioning member 422 to prevent the positioning member 422 from disengaging from the limiting hole 412; the clamping assembly 4 has a simple structure and low production cost, and the clamping assembly 4 can be manually driven, which simplifies the external connection structure of the fixture and facilitates the fixture to rotate axially directly through the rotating assembly 3.

[0048] Further optionally, the positioning member 422 and the rod body 421 can be connected by threads, which is beneficial for the connection between the top pressing member 42 and the connecting bracket 41.

[0049] Optionally, the connecting bracket 41 can be detachably installed on the base plate 1 using screws, bolts, or other connecting accessories. Furthermore, after the frame-shaped workpiece is welded, the clamping assembly 4 can be disassembled, allowing the top surface of the frame-shaped workpiece to be polished using a grinding machine, thereby improving the flatness of the top surface. It should be noted that in actual production, other fixing devices can be used to fix the base plate to prevent the base plate 1 from being subjected to stress and rotating via the rotating assembly 3 during polishing.

[0050] Optionally, an elastic element is provided between the rod body 421 and the connecting bracket 41. The elastic element drives the pressing member 42 to rotate away from the fixed position 12, so that the pressing member 42 can be reset, which can improve the rotation efficiency of the pressing member 42 and facilitate manual operation by the operator.

[0051] In another alternative embodiment of the clamp, such as Figure 1 As shown, at least one side of the outer periphery of the base is provided with a gripping part 14. Specifically, the gripping part 14 can be fixedly installed on the side of the base plate 1 by welding or detachment. The cross-sectional shape of the gripping part 14 can be circular, elliptical, or rectangular tubular, and its inner diameter is recommended to be controlled within 30-50mm to accommodate manual gripping. Further optionally, the surface of the gripping part 14 can be provided with anti-slip texture or covered with a rubber layer. By providing the gripping part 14 on the base plate 1, the problem of insufficient force points when manually handling the fixture is solved. When it is necessary to adjust the fixture position or perform maintenance, the operator can directly grip the gripping part 14 to apply force, avoiding hand slippage or uneven force caused by directly lifting the base plate 1. In addition, during the welding process, the operator can directly grip the gripping part 14 to apply force and rotate the base plate 1 through the rotating component 3, thereby changing the welding angle of the workpiece and preventing operator injury.

[0052] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A simple clamp for frame-shaped workpieces, characterized in that, include: The base plate (1) has a plurality of accommodating cavities connected end to end. There is a preset angle between two adjacent accommodating cavities. Each accommodating cavity forms a fixed position (12) that is adapted to the outer periphery of the frame-shaped workpiece S. The plurality of accommodating cavities include a first accommodating cavity (11a) and a second accommodating cavity (11b). A reference positioning part (13) is provided on the base plate (1) and located on one side of the first receiving cavity (11a); Multiple clamping mechanisms are provided on the base plate (1) and distributed around the fixed position (12). The multiple clamping mechanisms include a first clamping mechanism (2a) and a second clamping mechanism (2b). At least one first clamping mechanism (2a) is arranged opposite to the reference positioning part (13) along the width direction of the first receiving cavity (11a). At least two sets of second clamping mechanisms (2b) are arranged opposite to each other along the width direction of any second receiving cavity (11b). Each clamping mechanism is provided with a clamping part (222). The clamping part (222) of each clamping mechanism can move closer to or away from the fixed position (12). A rotating assembly (3) is located at the lower part of the base plate (1) and drives the base plate (1) to rotate.

2. The simple jig for a frame-shaped workpiece according to Claim 1, wherein The rotating assembly (3) includes a mounting base (31) located at the lower part of the base plate (1), an assembly cavity (32) located in the mounting base (31), and a rotating connector (33) connected to the mounting base (31).

3. The simple jig for a frame-shaped workpiece according to claim 2, wherein The rotating connector (33) extends at least partially to the underside of the assembly cavity (32).

4. The simple jig for a frame-shaped workpiece according to Claim 1, wherein Each clamping mechanism includes a limiting bracket (21) disposed on the base plate (1) and an adjusting member (22) movably passing through the limiting bracket (21). The clamping part (222) is provided at one end of the adjusting member (22) facing the fixed position (12). By moving the adjusting member (22) relative to the limiting bracket (21), the clamping part (222) moves closer to or further away from the fixed position (12).

5. The simple jig for a frame-shaped workpiece according to claim 4, wherein Each of the adjusting members (22) has a driving part (221) at one end away from the clamping part (222). There is a gap between the driving part (221) and the base plate (1). The outer wall of the adjusting member (22) has an external thread. The limiting bracket (21) has an adjusting hole through it. The adjusting hole has an internal thread that matches the external thread.

6. The simple jig for a frame-shaped workpiece according to Claim 1, wherein The reference positioning part (13) is disposed near the edge of the base plate (1) and extends along the edge of the base plate (1). The height of the reference positioning part (13) is greater than or equal to the height of the frame workpiece S.

7. The simple jig for a frame-shaped workpiece according to Claim 1, wherein The plurality of accommodating cavities also include a third accommodating cavity (11c) disposed on one side of any of the second accommodating cavity (11b), and the plurality of clamping mechanisms also include at least two sets of third clamping mechanisms (2c), the two sets of third clamping mechanisms (2c) being arranged opposite each other along the width direction of the third accommodating cavity (11c), and the two adjacent sets of second clamping mechanisms (2b) and the two sets of third clamping mechanisms (2c) being staggered.

8. The simple jig for a frame-shaped workpiece according to Claim 1, wherein The clamp also includes a clamping assembly (4). A plurality of clamping assemblies (4) are provided on one side of the fixed position (12), and at least one clamping assembly (4) is provided on one side of any of the receiving cavities. The clamping assembly (4) includes a connecting bracket (41) provided on the base plate (1) and a pressing member (42) rotatably provided on the connecting bracket (41). The pressing member (42) is located above the fixed member. By rotating the pressing member (42) relative to the connecting bracket (41), the pressing member (42) clamps the frame-shaped workpiece S with the base plate (1).

9. The simple jig for a frame-shaped workpiece according to Claim 8, wherein The outer wall of the connecting bracket (41) is provided with a spiral hole (411) and a limiting hole (412) communicating with the spiral hole (411). The spiral hole (411) is formed by spirally extending downward in the connecting bracket (41) along the axial direction. The limiting hole (412) is formed by vertically extending downward from the bottom of the spiral hole (411). The top pressing member (42) includes a rod (421) disposed in the connecting bracket (41) and a positioning member disposed outside the rod (421). 422) A pressure plate (423) is provided at the top of the rod body (421). The positioning member (422) is adapted to the spiral hole (411) and the limiting hole (412). The positioning member (422) moves from the top of the spiral hole (411) to the limiting hole (412) so that the rod body (421) drives the pressure plate (423) to rotate and move downward relative to the connecting bracket (41), thereby clamping the frame-shaped workpiece S with the pressure plate (423).

10. The simple jig for a frame-shaped workpiece according to any one of claims 1 to 9, characterized in that, The base plate (1) has a gripping part (14) on at least one side of its outer periphery.

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