Locking jig and workpiece machining apparatus

Abstract

The utility model provides a kind of locking fixture and workpiece processing equipment, wherein locking fixture includes: fixture body, cover plate is covered on fixture body, and positioning structure is located on cover plate;Wherein, fixture body is equipped with fixed groove, fixed groove is used to fix first workpiece and second workpiece, first workpiece is equipped with multiple fastening holes, second workpiece is equipped with multiple connecting holes, wherein two connecting holes are diagonally arranged;Cover plate is equipped with positioning slot and mounting hole, positioning slot corresponds with two connecting holes diagonally arranged, mounting hole is inserted for threaded locking device;Positioning structure is equipped with positioning pin, positioning pin is used to limit the connecting hole diagonally arranged, so that the remaining connecting hole can be opposite with corresponding fastening hole and mounting hole. By adopting the above technical scheme, the positioning accuracy of the workpiece is improved. The installation and fixing process of the workpiece is more convenient, the time and effort of the operator to adjust the position of the workpiece are reduced, the production efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of workpiece processing equipment, and more specifically, to a locking fixture and workpiece processing equipment. Background Technology

[0002] In machining, assembly, and testing, precise positioning and secure locking of multiple workpieces are often required to ensure machining accuracy and assembly quality. Currently, traditional fixture structures often suffer from insufficient positioning accuracy for operations that require stacking and fixing two workpieces. For example, during the fixing process, the lack of effective positioning methods makes it difficult to ensure accurate alignment between the fastening holes and connecting holes on the two workpieces. This leads to deviations during subsequent tightening using threaded locking devices, affecting the stability and reliability of the workpiece connection.

[0003] Furthermore, existing fixtures are often cumbersome to operate, requiring operators to spend considerable time and effort adjusting the workpiece position, which not only reduces production efficiency but also increases labor costs. Moreover, some fixtures are not designed with the stability of workpiece fixation in mind, making them prone to workpiece displacement due to external forces during processing, thus affecting product quality and even causing workpiece scrap.

[0004] Therefore, there is an urgent need for a locking fixture that can improve workpiece positioning accuracy, simplify operation procedures, and enhance fixing stability to meet the growing demand for high-precision and high-efficiency production. Utility Model Content

[0005] The purpose of this utility model is to provide a locking fixture and workpiece processing equipment to solve the technical problem that deviations easily occur when workpieces are fastened in the existing workpiece processing equipment, resulting in poor yield.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] Firstly, a locking fixture is provided, comprising:

[0008] The fixture body, the cover plate covering the fixture body, and the positioning structure provided on the cover plate;

[0009] The fixture body is provided with a fixing groove for fixing a first workpiece and a second workpiece. The second workpiece is placed on the first workpiece. The shape and size of the fixing groove match the shape and size of the first workpiece. The first workpiece is provided with a plurality of fastening holes. The second workpiece is provided with a plurality of connecting holes for engaging with the fastening holes of the first workpiece one by one. Two of the connecting holes are arranged diagonally.

[0010] The cover plate has a positioning groove that communicates with the fixing groove and a mounting hole that corresponds to the remaining connecting holes. The positioning groove corresponds to the two connecting holes that are arranged diagonally. The mounting hole is for the insertion of a threaded locking device.

[0011] The positioning structure is provided with positioning pins for sequentially passing through the positioning groove and the diagonally arranged connecting holes. The positioning pins are used to limit the diagonally arranged connecting holes, so that the remaining connecting holes can be aligned with the corresponding fastening holes and mounting holes.

[0012] By adopting the above technical solution, compared with traditional fixtures, this locking fixture significantly improves the positioning accuracy of the workpiece through its unique structural design. Utilizing the cooperation of the positioning pin with the diagonal connecting holes and positioning grooves, the connecting holes and fastening holes of two workpieces can be quickly and accurately aligned, avoiding deviations caused by inaccurate manual adjustments. In terms of operation, its structural design simplifies the installation and fixing process of the workpiece, reducing the time and effort required for operators to adjust the workpiece position, effectively improving production efficiency and reducing labor costs. At the same time, precise positioning and reliable threaded locking enhance the stability of the workpiece fixation, effectively preventing workpiece displacement during processing, ensuring product quality, and reducing the occurrence of workpiece scrap.

[0013] In one embodiment, the positioning groove is an oblong groove, and the two ends of the positioning groove are respectively provided with a first positioning groove end and a second positioning groove end. The first positioning groove end corresponds to one of the two connecting holes arranged diagonally, and the second positioning groove end corresponds to the other connecting hole of the two connecting holes arranged diagonally. The positioning structure is provided with two positioning pins, one of which is used to pass through the first positioning groove end, and the other positioning pin is used to pass through the second positioning groove end.

[0014] In one embodiment, there are two positioning slots, each positioning slot corresponding to a connecting hole arranged diagonally, and the positioning pin passes through the positioning slot and the connecting hole.

[0015] In one embodiment, the positioning structure includes a first connecting rod, a second connecting rod, and a positioning pin; the first connecting rod is erected on the cover plate, the second connecting rod is arranged perpendicular to the first connecting rod, and the extension direction of the second connecting rod is consistent with the extension direction of the positioning groove; the positioning pin is arranged perpendicularly at the end of the second connecting rod.

[0016] In one embodiment, the positioning structure further includes a limiting pin disposed on the connection between the second connecting rod and the positioning pin, wherein a stepped structure is formed between the limiting pin and the positioning pin, the stepped structure being used to abut against the surrounding portion of the connecting hole of the second workpiece to limit the insertion depth of the positioning pin.

[0017] In one embodiment, the number of mounting holes on the cover plate is multiple, with at least two mounting holes located on both sides of the positioning groove.

[0018] In one embodiment, the cover plate is detachably connected to the fixture body; or, the cover plate is hinged to the fixture body, and the cover plate is capable of opening and closing the fixing groove.

[0019] In one embodiment, the cover plate is further provided with a switch handle.

[0020] In one embodiment, the fixture body is provided with a positioning protrusion corresponding to the positioning hole of the first workpiece.

[0021] In a second aspect, a workpiece processing apparatus is provided, including a transfer fixture and the aforementioned locking fixture, wherein the transfer fixture is used to place the first workpiece and the second workpiece on the fixture body.

[0022] By adopting the above technical solution, the workpiece processing equipment of this embodiment has the advantage of high production yield, in addition to the advantages of the locking fixture in the above embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the locking fixture provided in this embodiment of the utility model.

[0025] Figure 2 This is an exploded view of the locking fixture provided in an embodiment of this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the positioning structure provided in an embodiment of this utility model.

[0027] The labels for the attached figures are as follows:

[0028] 1. Fixture body; 2. Cover plate; 3. Positioning structure;

[0029] 11. Fixing groove; 10. First workpiece; 20. Second workpiece; 21. Positioning groove; 22. Mounting hole; 23. Switch handle; 31. Positioning pin; 32. First connecting rod; 33. Second connecting rod; 34. Limiting pin; 101. Fastening hole; 201. Connecting hole; 211. First positioning groove end; 212. Second positioning groove end. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0034] like Figures 1 to 3 As shown, an embodiment of this utility model provides a locking fixture, comprising:

[0035] The fixture body 1, the cover plate 2 covering the fixture body 1, and the positioning structure 3 provided on the cover plate 2;

[0036] The fixture body 1 is provided with a fixing groove 11, which is used to fix the first workpiece 10 and the second workpiece 20. The second workpiece 20 is placed on the first workpiece 10. The shape and size of the fixing groove 11 match the shape and size of the first workpiece 10. The first workpiece 10 is provided with a plurality of fastening holes 101. The second workpiece 20 is provided with a plurality of connecting holes 201 for connecting with the fastening holes 101 of the first workpiece 10 one by one. Two connecting holes 201 are arranged diagonally.

[0037] The cover plate 2 has a positioning groove 21 that communicates with the fixing groove 11 and a mounting hole 22 that corresponds to the remaining connecting holes 201. The positioning groove 21 corresponds to the two connecting holes 201 arranged diagonally, and the mounting hole 22 is for the threaded locking device to be inserted.

[0038] The positioning structure 3 is provided with a positioning pin 31 for sequentially passing through the positioning groove 21 and the diagonally arranged connecting holes 201. The positioning pin 31 is used to limit the diagonally arranged connecting holes 201 so that the remaining connecting holes 201 can be aligned with the corresponding fastening holes 101 and mounting holes 22.

[0039] Specifically, the locking fixture includes a fixture body 1, a cover plate 2, and a positioning structure 3. The fixture body 1 serves as the basic component, and its fixing groove 11 is specifically designed and sized to fit the first workpiece 10, providing a stable placement space for it. The second workpiece 20 is placed on top of the first workpiece 10, forming a stacked workpiece assembly. The first workpiece 10 has multiple fastening holes 101, and the second workpiece 20 has corresponding multiple connecting holes 201, with two connecting holes 201 arranged diagonally. This design provides a basis for subsequent positioning and connection.

[0040] A cover plate 2 is placed on the fixture body 1. It has a positioning groove 21 that communicates with the fixing groove 11. This positioning groove 21 corresponds to two diagonally arranged connecting holes 201 on the second workpiece 20. It also has mounting holes 22 corresponding to the remaining connecting holes 201. A positioning structure 3 is installed on the cover plate 2. Its core component, the positioning pin 31, can pass through the positioning groove 21 and the diagonally arranged connecting holes 201 in sequence, thereby achieving the positioning of the workpiece.

[0041] The working principle of the locking fixture provided in this embodiment is as follows:

[0042] In use, the first workpiece 10 is first placed in the fixing groove 11 of the fixture body 1. Since the fixing groove 11 matches the shape and size of the first workpiece 10, the first workpiece 10 can be accurately positioned. Next, the second workpiece 20 is placed on the first workpiece 10, and the cover plate 2 is closed. At this time, the positioning pin 31 in the positioning structure 3 passes through the positioning groove 21 of the cover plate 2 and the two diagonally arranged connecting holes 201 of the second workpiece 20 in sequence. Through the limiting effect of the positioning pin 31 on these two connecting holes 201, the second workpiece 20 and the first workpiece 10 are forced to maintain a relatively fixed positional relationship on the plane, so that the remaining connecting holes 201 on the second workpiece 20 can be precisely aligned with the corresponding fastening holes 101 of the first workpiece 10 and the mounting holes 22 on the cover plate 2. Finally, by inserting a threaded locking device into the mounting hole 22, passing it through the connecting hole 201 and screwing it into the fastening hole 101, the first workpiece 10 and the second workpiece 20 are firmly locked together.

[0043] By adopting the above technical solution, compared with traditional fixtures, this locking fixture significantly improves the positioning accuracy of the workpiece through its unique structural design. Utilizing the cooperation of the positioning pin 31 with the diagonal connecting holes 201 and the positioning groove 21, the connecting holes 201 and fastening holes 101 of the two workpieces can be quickly and accurately aligned, avoiding deviations caused by inaccurate manual adjustments. In terms of operation, its structural design simplifies the installation and fixing process of the workpiece, reducing the time and effort required for operators to adjust the workpiece position, effectively improving production efficiency and reducing labor costs. At the same time, precise positioning and reliable threaded locking enhance the stability of the workpiece fixation, effectively preventing workpiece displacement during processing, ensuring product quality, and reducing the occurrence of workpiece scrap.

[0044] In one embodiment, the positioning groove 21 is a waist-shaped groove, and the two ends of the positioning groove 21 are respectively provided with a first positioning groove end 211 and a second positioning groove end 212. The first positioning groove end 211 corresponds to one of the two connecting holes 201 arranged diagonally, and the second positioning groove end 212 corresponds to the other connecting hole 201 of the two connecting holes 201 arranged diagonally. The positioning structure 3 is provided with two positioning pins 31, one of which is used to pass through the first positioning groove end 211, and the other positioning pin 31 is used to pass through the second positioning groove end 212.

[0045] Specifically, the positioning groove 21 is designed as an oblong groove with a unique two-end structure, namely the first positioning groove end 211 and the second positioning groove end 212, which precisely correspond to the two diagonally arranged connecting holes 201. This one-to-one correspondence establishes a clear positioning reference. At the same time, the positioning structure 3 is equipped with two positioning pins 31, forming a "point-to-point" cooperation mode with the two ends of the positioning groove 21. One positioning pin 31 passes through the first positioning groove end 211, and the other passes through the second positioning groove end 212, providing positioning constraints for the second workpiece 20 from two diagonal directions, and providing a stable support structure for workpiece positioning.

[0046] During use, after the first workpiece 10 is placed in the fixing groove 11 of the fixture body 1 and the second workpiece 20 is stacked on top of the first workpiece 10, two positioning pins 31 are inserted into the two ends of the waist-shaped positioning groove 21 respectively. Since the first positioning groove end 211 and the second positioning groove end 212 correspond to the connecting holes 201 of the second workpiece 20 arranged diagonally, after the positioning pins 31 are inserted, the second workpiece 20's freedom of movement in the plane is restricted from the two diagonal directions, preventing it from translating or rotating. Through this double-point positioning method, it is possible to more accurately ensure that the remaining connecting holes 201 on the second workpiece 20 are aligned with the fastening holes 101 of the first workpiece 10 and the mounting holes 22 on the cover plate 2, creating favorable conditions for the smooth installation and fastening of the subsequent threaded locking device.

[0047] By adopting the above technical solution, the two locating pins 31 constrain the workpiece from a diagonal direction, effectively counteracting the influence of external forces on the workpiece. Even when subjected to lateral forces or other external forces during processing, the workpiece is less likely to shift, ensuring the consistency and reliability of product processing. Furthermore, this structure makes positioning operations simpler and more intuitive. Operators can quickly complete workpiece positioning without complex adjustments, further improving production efficiency, reducing reliance on operator skill levels, and minimizing workpiece scrap due to inaccurate positioning, thus lowering production costs.

[0048] In one embodiment, there are two positioning grooves 21, each positioning groove 21 corresponding to a connecting hole 201 arranged diagonally, and a positioning pin 31 passing through the positioning groove 21 and the connecting hole 201.

[0049] In this embodiment, there are two positioning slots 21, which correspond one-to-one with the connecting holes 201 arranged diagonally on the second workpiece 20. The positioning pin 31, as a key positioning component, passes through the positioning slots 21 and the corresponding connecting holes 201 sequentially. This structural design constructs a two-point positioning system. The two positioning slots 21 and the positioning pin 31 cooperate with each other to position and constrain the second workpiece 20 from a diagonal direction, providing a stable and reliable basic framework for the precise positioning of the workpiece on the fixture.

[0050] When using this locking fixture, first place the first workpiece 10 into the fixing groove 11 of the fixture body 1, and then stack the second workpiece 20 on top of the first workpiece 10. At this time, the positioning pin 31 passes through the positioning groove 21 and the corresponding connecting hole 201 in sequence. Since the positioning groove 21 and the diagonally arranged connecting holes 201 correspond precisely, after the positioning pin 31 is inserted, it can restrict the movement of the second workpiece 20 in the plane from two diagonal directions. This diagonal double-point positioning method effectively restricts the translational and rotational degrees of freedom of the second workpiece 20, ensuring that the remaining connecting holes 201 on the second workpiece 20 can be precisely aligned with the fastening holes 101 of the first workpiece 10 and the mounting holes 22 on the cover plate 2, thus preparing for the subsequent secure locking of the two workpieces by the threaded locking device.

[0051] In one embodiment, the positioning structure 3 includes a first connecting rod 32, a second connecting rod 33, and a positioning pin 31; the first connecting rod 32 is erected on the cover plate 2, the second connecting rod 33 is arranged perpendicular to the first connecting rod 32, and the extension direction of the second connecting rod 33 is consistent with the extension direction of the positioning groove 21; the positioning pin 31 is arranged perpendicularly at the end of the second connecting rod 33.

[0052] Specifically, the first connecting rod 32 is vertically fixed on the cover plate 2, serving as a support and positioning base, and determining the position of the entire positioning structure 3 on the cover plate 2; the second connecting rod 33 is set perpendicular to the first connecting rod 32, and its extension direction is consistent with the extension direction of the positioning groove 21. This design ensures that the positioning pin 31 can be accurately aligned with the positioning groove 21; the positioning pin 31 is vertically installed at the end of the second connecting rod 33, serving as a key component that directly cooperates with the positioning groove 21 and the connecting hole 201, and is used to limit the position of the workpiece.

[0053] When using this locking fixture, after the first workpiece 10 is placed in the fixing groove 11 of the fixture body 1 and the second workpiece 20 is stacked on top of the first workpiece 10, the positioning pin 31 can accurately align with the positioning groove 21 and the diagonally arranged connecting holes 201 on the second workpiece 20 because the extension direction of the second connecting rod 33 is consistent with the positioning groove 21. The operator inserts the positioning pin 31 into the positioning groove 21 and the connecting hole 201 in sequence. Through the limiting effect of the positioning pin 31, the second workpiece 20 is constrained from the diagonal direction, restricting its translation and rotation in the plane. This allows the remaining connecting holes 201 on the second workpiece 20 to be precisely aligned with the fastening holes 101 of the first workpiece 10 and the mounting holes 22 on the cover plate 2, creating conditions for the subsequent secure locking of the two workpieces by the threaded locking device. The entire positioning process relies on the precise positional relationship and cooperation of the components of the positioning structure 3 to achieve rapid and accurate positioning of the workpiece.

[0054] In one embodiment, the positioning structure 3 further includes a limiting pin 34 disposed on the connection between the second connecting rod 33 and the positioning pin 31. A stepped structure is formed between the limiting pin 34 and the positioning pin 31. The stepped structure is used to abut against the surrounding portion of the connecting hole 201 of the second workpiece 20 to limit the insertion depth of the positioning pin 31.

[0055] Specifically, a limiting pin 34 is added to the existing first connecting rod 32, second connecting rod 33, and positioning pin 31. The limiting pin 34 is positioned between the second connecting rod 33 and the positioning pin 31, forming a stepped structure together with the positioning pin 31. The cooperation between the limiting pin 34 and the positioning pin 31 increases the control dimension of the insertion depth of the positioning pin 31. The stepped surface formed by the limiting pin 34 and the positioning pin 31 can accurately correspond to the area surrounding the connecting hole 201 of the second workpiece 20, becoming a key structure for controlling the insertion depth of the positioning pin 31 and enriching the functional modules of the positioning structure 3.

[0056] When using this locking fixture for workpiece positioning, as the positioning pin 31 is inserted into the positioning groove 21 and the connecting hole 201 of the second workpiece 20, as the positioning pin 31 continues to penetrate deeper, when the stepped surface of the stepped structure contacts the area surrounding the connecting hole 201 of the second workpiece 20, the limiting pin 34 will prevent the positioning pin 31 from penetrating further. At this point, the insertion depth of the positioning pin 31 is precisely limited, ensuring that the positioning pin 31 can effectively pass through the positioning groove 21 and the connecting hole 201, providing a reliable limiting effect on the second workpiece 20 and ensuring accurate alignment between the second workpiece 20 and the first workpiece 10; it also avoids the problem of the positioning pin 31 being inserted too deeply, damaging the workpiece or affecting the installation of the subsequent threaded locking device, as well as the problem of shallow insertion leading to unstable positioning. Through the abutment limiting of the stepped structure, the insertion depth of the positioning pin 31 is automatically and precisely controlled, simplifying the operation process and reducing reliance on the operator's experience.

[0057] In one embodiment, the cover plate 2 has multiple mounting holes 22, with at least two mounting holes 22 located on both sides of the positioning groove 21.

[0058] Specifically, the positioning groove 21 is used to position the second workpiece 20 in conjunction with the positioning pin 31, while the mounting holes 22 distributed on both sides provide installation channels for the threaded locking device, forming a fastening connection structure together with the fastening hole 101 of the first workpiece 10 and the connecting hole 201 of the second workpiece 20. The multiple mounting holes 22 cooperate with the positioning groove 21 to provide comprehensive and stable structural support for fixing the workpiece on the fixture from both positioning and fastening dimensions.

[0059] When using this locking fixture, after the positioning pin 31 positions the second workpiece 20 through the positioning groove 21 and the diagonally arranged connecting holes 201, the role of the multiple mounting holes 22 becomes apparent. The mounting holes 22, distributed on both sides of the positioning groove 21, allow the threaded locking device to pass through the connecting holes 201 of the second workpiece 20 from different directions and screw into the fastening holes 101 of the first workpiece 10. This multi-directional fastening method, compared to single-direction locking, can more effectively counteract the external forces experienced by the workpiece during processing. The mounting holes 22 on both sides work together, as if pulling and fixing the workpiece from two directions, further restricting the workpiece's tendency to move in the plane, ensuring the workpiece remains stable during threaded locking, and preventing displacement due to uneven local force. This ensures that the second workpiece 20 and the first workpiece 10 always maintain precise alignment, providing a reliable foundation for subsequent processing or assembly.

[0060] In one embodiment, the cover plate 2 is detachably connected to the fixture body 1; or, the cover plate 2 is hinged to the fixture body 1, and the cover plate 2 can open and close the fixing groove 11.

[0061] Specifically, the cover plate 2 and the fixture body 1 are connected in two ways. The first is a detachable connection, where the cover plate 2 and the fixture body 1 can be separated and combined using bolts, clips, or other methods, allowing the cover plate 2 to be removed from or installed on the fixture body 1 as needed. The second is a hinged connection, where the cover plate 2 and the fixture body 1 are connected via a hinge shaft or other components, allowing the cover plate 2 to open and close around the fixed groove 11 with the hinge point as the axis. In the open state, it facilitates the placement or removal of workpieces, while in the closed state, it cooperates with the fixture body 1 to position and lock the workpiece. These two connection methods, designed from different perspectives, provide diverse options for the structural functions of the fixture.

[0062] When a detachable connection is used, the operator can remove the cover plate 2 from the fixture body 1 before placing the workpiece. This fully exposes the fixing groove 11 of the fixture body 1, facilitating the placement of the first workpiece 10 and the second workpiece 20 into their respective positions within the fixing groove 11. After placement, the cover plate 2 is reinstalled into the fixture body 1, and the workpiece is positioned and locked using the positioning structure 3 and the mounting hole 22. In the hinged connection, the operator simply opens the cover plate 2 around the hinge point to place the workpiece into the fixing groove 11, then closes the cover plate 2. The workpiece is positioned using the positioning groove 21, positioning pin 31, and other structures, and then the threaded locking device is inserted through the mounting hole 22 to secure it. The entire process does not require complete disassembly of the cover plate 2, making the operation simpler and faster, especially suitable for production scenarios requiring frequent workpiece loading and unloading.

[0063] In one embodiment, the cover plate 2 is also provided with a switch handle 23.

[0064] Specifically, based on the original cover plate 2 structure, the newly added switch handle 23 becomes a key component. It is securely connected to the cover plate 2 and is generally located on the edge of the cover plate 2 or in an area that is easy for the user to grip. The addition of this handle provides the operator with a direct point of force application, making the operation of the cover plate 2 more convenient. From a structural perspective, it enriches the functional modules of the cover plate 2 and improves the overall architecture of the fixture.

[0065] When the cover plate 2 and the fixture body 1 are detachably connected, the operator can more easily remove the cover plate 2 by gripping the switch handle 23. After placing the workpiece, the operator can use the handle to precisely control the installation position and force of the cover plate 2, ensuring that the cover plate 2 and the fixture body 1 are correctly aligned. In the hinged connection mode, the function of the switch handle 23 is even more significant. The operator can easily and effortlessly open or close the cover plate 2 by gripping the handle.

[0066] In one embodiment, the fixture body 1 is provided with a positioning protrusion corresponding to the positioning hole of the first workpiece 10.

[0067] Specifically, the shape and size of the positioning protrusion match the positioning hole of the first workpiece 10. Structurally, the positioning protrusion can take various forms such as columnar or frustum-shaped, and its material is usually selected from metals or engineering plastics with high hardness and good wear resistance to ensure that it is not easily worn or deformed during long-term use. This matching design of the positioning protrusion and the positioning hole constructs a complementary "convex-concave" positioning structure 3, which provides a precise benchmark for the positioning of the first workpiece 10 from a physical structural level, making the placement of the first workpiece 10 on the fixture body 1 more clear and fixed.

[0068] In a second aspect, a workpiece processing apparatus is provided, including a transfer fixture and the aforementioned locking fixture, wherein the transfer fixture is used to place a first workpiece 10 and a second workpiece 20 on the fixture body 1.

[0069] By adopting the above technical solution, the workpiece processing equipment of this embodiment has the advantage of high production yield, in addition to the advantages of the locking fixture in the above embodiments.

[0070] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking fixture, characterized in that, include: The fixture body, the cover plate covering the fixture body, and the positioning structure provided on the cover plate; The fixture body is provided with a fixing groove for fixing a first workpiece and a second workpiece. The second workpiece is placed on the first workpiece. The shape and size of the fixing groove match the shape and size of the first workpiece. The first workpiece is provided with a plurality of fastening holes. The second workpiece is provided with a plurality of connecting holes for engaging with the fastening holes of the first workpiece one by one. Two of the connecting holes are arranged diagonally. The cover plate has a positioning groove that communicates with the fixing groove and a mounting hole that corresponds to the remaining connecting holes. The positioning groove corresponds to the two connecting holes that are arranged diagonally. The mounting hole is for the insertion of a threaded locking device. The positioning structure is provided with positioning pins for sequentially passing through the positioning groove and the diagonally arranged connecting holes. The positioning pins are used to limit the diagonally arranged connecting holes, so that the remaining connecting holes can be aligned with the corresponding fastening holes and mounting holes.

2. The locking fixture as described in claim 1, characterized in that, The positioning groove is an oblong groove, and the two ends of the positioning groove are respectively provided with a first positioning groove end and a second positioning groove end. The first positioning groove end corresponds to one of the two connecting holes arranged diagonally, and the second positioning groove end corresponds to the other connecting hole of the two connecting holes arranged diagonally. The positioning structure is provided with two positioning pins, one of which is used to pass through the first positioning groove end, and the other positioning pin is used to pass through the second positioning groove end.

3. The locking fixture as described in claim 1, characterized in that, The number of positioning grooves is two, and each positioning groove corresponds to a connecting hole arranged diagonally. The positioning pin passes through the positioning groove and the connecting hole.

4. The locking fixture as described in claim 1, characterized in that, The positioning structure includes a first connecting rod, a second connecting rod, and a positioning pin; the first connecting rod is erected on the cover plate, the second connecting rod is perpendicular to the first connecting rod, and the extension direction of the second connecting rod is consistent with the extension direction of the positioning groove; the positioning pin is perpendicularly disposed at the end of the second connecting rod.

5. The locking fixture as described in claim 4, characterized in that, The positioning structure further includes a limiting pin disposed on the connection between the second connecting rod and the positioning pin. A stepped structure is formed between the limiting pin and the positioning pin. The stepped structure is used to abut against the surrounding portion of the connecting hole of the second workpiece to limit the insertion depth of the positioning pin.

6. The locking fixture as described in claim 1, characterized in that, The cover plate has multiple mounting holes, with at least two mounting holes located on either side of the positioning groove.

7. The locking fixture as described in claim 1, characterized in that, The cover plate is detachably connected to the fixture body; or, the cover plate is hinged to the fixture body, and the cover plate can open and close the fixing groove.

8. The locking fixture as described in claim 7, characterized in that, The cover plate is also equipped with a switch handle.

9. The locking fixture as described in any one of claims 1 to 8, characterized in that, The fixture body is provided with positioning protrusions corresponding to the positioning holes of the first workpiece.

10. A workpiece processing device, characterized in that, The invention includes a transfer fixture and a locking fixture as described in any one of claims 1 to 9, wherein the transfer fixture is used to place the first workpiece and the second workpiece on the fixture body.

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