Positioning tool

Abstract

The utility model relates to a positioning tool which comprises a mounting base, clamping assemblies and a pressing plate, the clamping assemblies and the pressing plate are arranged on the mounting base, the pressing plate is fixedly arranged on the upper end face of the mounting base, and each clamping assembly comprises a bottom plate used for supporting a workpiece and a driving assembly used for driving the bottom plate to vertically move. The bottom plate is slidably connected to the mounting base in the vertical direction, the bottom plate is arranged between the pressing plate and the mounting base, workpieces are placed on the bottom plate, and the driving assembly is arranged on the mounting base. Workpieces are clamped upwards, so that the upper end faces of the workpieces of different models are always located on the same horizontal plane, and tapping treatment can be conveniently conducted on the workpieces.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts processing and manufacturing, and particularly relates to a positioning tooling. Background Art

[0002] The door hinge is an important part of the door, used to connect the door and the vehicle body, and it can realize the opening and closing of the door, facilitating the entry and exit of the driver and passengers. The processing of automotive door hinges is the processing of door parts and vehicle body parts with different structures.

[0003] Chinese Patent with application number 201921573257.0 discloses a tooling positioning and clamping device, including a device main body, a control box and a clamping plate. In this utility model, two clamping plates are arranged on the device main body. The output end of the first hydraulic cylinder is fixedly connected to the upper end of the clamping plate through a first hydraulic rod, and the bottom end of the clamping plate is fixedly connected to the return spring inside the telescopic cylinder. In the working state, the return spring is in a downward tightened state. The first hydraulic cylinder and the return spring exert forces in two directions, making the tooling more stable during clamping. By sliding an activity plate below the top plate, the left and right positions of the drill bit can be flexibly adjusted according to actual needs, and then fixed by clamping the limit post between the limit plates, so as to quickly adjust the position of the drill bit.

[0004] After the application uses the first hydraulic cylinder to drive the clamping plate downward to fix the workpiece, the workpiece is processed by the drill bit. However, when facing workpieces with different thicknesses, if the same tapping depth is to be achieved, the stroke position of the drill bit needs to be adjusted, reducing the processing efficiency.

[0005] Therefore, a new technical solution is needed to solve the above problems. Summary of the Utility Model

[0006] In order to improve the processing efficiency of workpieces, this application provides a positioning tooling.

[0007] A positioning tooling provided by this application adopts the following technical solution:

[0008] A positioning tooling includes a mounting base, a clamping assembly and a pressing plate arranged on the mounting base. The pressing plate is fixedly arranged on the upper end surface of the mounting base. Each clamping assembly includes a bottom plate for supporting the workpiece and a driving assembly for driving the bottom plate to move vertically. The bottom plate is slidably connected to the mounting base in the vertical direction. The bottom plate is arranged between the pressing plate and the mounting base, and the workpieces are respectively placed on the bottom plate. The driving assembly is arranged on the mounting base.

[0009] By adopting the above technical solution, the workpiece is placed on the bottom plate, and the bottom plate is driven by the driving component to move upward. The bottom plate and the pressing plate cooperate with each other to clamp the workpiece, ensuring that the upper end surface of the workpiece is always in the same horizontal plane, which is convenient for the drill bit to tap the workpiece.

[0010] Optionally: The driving component includes a first cylinder, a cylinder push block and two optical axes. The two optical axes are inserted through the bottom plate, and the two ends of the optical axes are respectively fixedly connected to the mounting seat and the pressing plate. The cylinder body part of the first cylinder is fixedly arranged on the side of the pressing plate away from the workpiece. The cylinder push block is slidably connected to the upper end surface of the mounting seat. The telescopic rod of the first cylinder is fixedly connected to the cylinder push block. The upper end surface of the cylinder push block abuts against the lower end surface of the bottom plate, and the upper end surface of the cylinder push block is inclined downward toward the side away from the first cylinder.

[0011] By adopting the above technical solution, the first cylinder drives the cylinder push block to move. The cylinder push block and the optical axis cooperate with each other to convert the horizontal movement of the cylinder push block into the vertical movement of the bottom plate, with a simple structure and convenient maintenance.

[0012] Optionally: A fixture front protection plate for limiting the pressing plate is arranged on the mounting seat. The fixture front protection plate is fixedly arranged on the upper end surface of the mounting seat, and the side of the pressing plate away from the first cylinder abuts against the fixture front protection plate.

[0013] By adopting the above technical solution, it prevents the optical axis from deforming during long-term operation and extends the service life of the optical axis.

[0014] Optionally: A compression spring is sleeved on the optical axis, and the upper and lower ends of the compression spring are respectively fixedly connected to the pressing plate and the bottom plate.

[0015] By adopting the above technical solution, it is convenient for the bottom plate to move downward quickly and improves the processing efficiency.

[0016] Optionally: A positioning pin for positioning the workpiece is arranged on the upper end surface of the bottom plate, and the positioning pin is inserted into the upper mounting hole of the workpiece.

[0017] By adopting the above technical solution, the position of the workpiece is limited to ensure the machining accuracy of the workpiece.

[0018] Optionally: The upper end surface of the positioning pin is diamond-shaped, and a chamfer is arranged on the upper side edge of the positioning pin.

[0019] By adopting the above technical solution, the mounting hole of the workpiece abuts against the chamfer downward, which is convenient for inserting the workpiece into the positioning pin.

[0020] Optionally, an inclined surface insert for supporting the first inclined surface of the workpiece is provided on the bottom plate.

[0021] By adopting the above technical solution, it is convenient to effectively support workpieces of different models.

[0022] Optionally, a limiting groove for limiting both sides of the workpiece is provided on the bottom plate, a preloading pin is arranged on the inner wall of the limiting groove, and the top block of the preloading pin abuts against the side wall of the workpiece.

[0023] By adopting the above technical solution, the two sides of the workpiece are pre-fixed to maintain stability during the upward movement of the workpiece.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By clamping the workpiece upward in the present application, the upper end surfaces of workpieces of different models are always on the same horizontal plane, which is convenient for tapping the workpieces.

[0026] 2. The pre-fixation of the workpiece is realized through the positioning pin and the inclined surface insert, which is convenient for subsequent clamping processing.

[0027] 3. The first cylinder pushes the cylinder push block to move, and the cooperation between the cylinder push block and the optical axis converts the lateral movement of the cylinder push block into the vertical movement of the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0029] Figure 2 is an exploded structural diagram of an embodiment of the present application;

[0030] Figure 3 is Figure 2 an enlarged structural diagram of part A;

[0031] Figure 4 is a schematic structural diagram of the workpiece in an embodiment of the present application.

[0032] In the figure, 1. mounting seat; 11. equal-height block; 12. pressing plate; 122. through hole; 13. front protection plate of the fixture; 14. guide rail; 2. bottom plate; 21. positioning pin; 22. limiting groove; 23. preloading pin; 24. inclined surface insert; 25. groove; 3. driving assembly; 31. first cylinder; 311. connecting block; 32. cylinder push block; 321. abutting surface; 33. optical axis; 331. compression spring; 4. workpiece; 41. mounting hole; 42. first inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following further describes the present application in detail with reference to the drawings.

[0034] A positioning tooling disclosed in the present application, as Figure 1 and Figure 2 shown, includes a mounting base 1, two groups of clamping components arranged on the mounting base 1, and a pressing plate 12. Two equal-height blocks 11 are arranged on the upper end surface of the mounting base 1. The two equal-height blocks 11 are respectively arranged at both ends of the length direction of the upper end surface of the mounting base 1. The lower end surface of the pressing plate 12 is fixedly connected to the upper ends of the equal-height blocks 11, ensuring that the pressing plate 12 is horizontally arranged, improving the processing accuracy. By replacing the two equal-height blocks 11, it is convenient to adjust the horizontal height of the pressing plate 12.

[0035] As Figure 1 and Figure 2As shown in the figure, two sets of clamping components are arranged along the length direction of the pressing plate 12 on the mounting seat 1. The clamping component includes a bottom plate 2 for supporting the workpiece 4 and a driving component 3 for driving the bottom plate 2 to move. The driving component 3 includes a first cylinder 31, a cylinder push block 32, and two optical axes 33. The two optical axes 33 are respectively arranged at both ends of the bottom plate 2 in the horizontal direction. The two optical axes 33 pass through the bottom plate 2, and the upper and lower ends of the two optical axes 33 are respectively fixedly connected to the mounting seat 1 and the pressing plate 12. By setting the optical axes 33, the sliding path of the bottom plate 2 is limited. Two guide rails 14 perpendicular to the length direction of the pressing plate 12 are arranged on the upper side of the mounting seat 1. The two guide rails 14 are respectively arranged below the two bottom plates 2. The upper end surfaces of the two first cylinder 31 push blocks 32 are respectively slidably connected to the two guide rails 14. The upper end surface of the cylinder push block 32 abuts against the lower end surface of the bottom plate 2, and both the upper end surface of the first cylinder 31 push block 32 and the lower end surface of the bottom plate 2 are smooth surfaces, which helps to reduce the friction force. The abutting surface 321 between the upper end surface of the first cylinder 31 push block 32 and the lower end surface of the bottom plate 2 is an inclined surface, and the side of the inclined surface close to the workpiece 4 is inclined downward. The cylinder body part of the first cylinder 31 is fixedly arranged on the mounting seat 1. A connecting block 311 is fixedly arranged on the telescopic rod of the first cylinder 31. The side of the connecting block 311 away from the first cylinder 31 is fixedly connected to the side of the cylinder push block 32 away from the workpiece 4. When the first cylinder 31 drives the cylinder push block 32 to move, the moving position of the bottom plate 2 is limited by the optical rod, and then the bottom plate 2 is driven to move up and down. In order to prevent the optical axis 33 from being bent during long-term operation, a fixture front protection plate 13 for limiting the bottom plate 2 is arranged on the mounting seat 1. The fixture front protection plate 13 is fixedly arranged on the upper end surface of the mounting seat 1. The side of the bottom plate 2 away from the first cylinder 31 abuts against the fixture front protection plate 13. During the up and down movement of the bottom plate 2, the bottom plate 2 always abuts against the fixture front protection plate 13, effectively reducing the force exerted by the bottom plate 2 on the optical axis 33 and extending the service life of the optical axis 33. In order to accelerate the downward movement speed of the bottom plate 2, a compression spring 331 is sleeved on the optical axis 33. The two ends of the compression spring 331 are respectively fixedly connected to the bottom plate 2 and the pressing plate 12. When the first cylinder 31 drives the cylinder push block 32 away from the pressing plate 12, the compression spring 331 drives the bottom plate 2 to move downward, accelerating the processing efficiency.

[0036] As Figure 1 and Figure 3As shown in the figure, on one side of the bottom plate 2 away from the first cylinder 31, there is a limiting groove 22 for limiting both sides of the workpiece 4. Both the upper and lower ends of the limiting groove 22 are open. A preloading pin 23 is arranged in the limiting groove 22. The preloading pin 23 is horizontally arranged on the side wall of the limiting groove 22. The top blocks of the two preloading pins 23 respectively abut against the mutually remote sides of the two workpieces 4. The top blocks are conical blocks. When the workpiece is placed in the limiting groove 22, the workpiece 4 drives the top block to overcome the spring in the preloading pin 23 and move. Through the preloading pin 23, the workpiece 4 is pre-fixed on one side, which is convenient for the subsequent clamping of the workpiece 4 by the bottom plate 2 and the pressing plate 12. On the bottom plate 2, there is an inclined surface insert block 24 for supporting the workpiece 4. The inclined surface insert block 24 is fixedly arranged on the lower side of the limiting groove 22. The side of the inclined surface insert block 24 close to the workpiece 4 is an inclined surface. On the side of the workpiece 4 close to the bottom plate 2, there is a first inclined surface 42. The inclined surface of the inclined surface insert block 24 abuts against the first inclined surface 42 of the workpiece 4. The inclined surface insert block 24 is detachably connected to the bottom plate 2. By replacing different inclined surface insert blocks 24, the stable support for workpieces 4 of different models is realized, and the stability of the workpiece 4 during the processing is enhanced. On the bottom plate 2, there is a groove 25 for placing the lower end part of the workpiece 4, which reduces the contact area between the bottom plate 2 and the workpiece 4 and is convenient for taking out the workpiece 4. At the same time, the iron filings generated during the processing of the workpiece 4 fall into the groove 25, reducing the interference caused during the processing of the workpiece.

[0037] As Figure 3 and Figure 4 shown, in order to improve the positioning accuracy of the workpiece 4, on the upper end surface of the bottom plate 2, there is a positioning pin 21 for limiting the workpiece 4. The mounting hole 41 on the upper part of the workpiece 4 can be correspondingly inserted into the positioning pin 21. The positioning pin 21 and the limiting groove 22 cooperate with each other to realize the precise positioning of the position of the workpiece 4. In order to facilitate the insertion of the workpiece 4 into the positioning pin 21, the upper end surface of the positioning pin 21 is diamond-shaped, and there is a chamfer on the upper side edge of the positioning pin 21.

[0038] As Figure 1 shown, on the pressing plate 12, there is a through hole 122 for the drill bit to pass through. The drill bit passes through the through hole 122 to perform tapping on the upper end surface of the workpiece 4.

[0039] The implementation principle of this embodiment is:

[0040] By placing the workpiece 4 in the limiting groove 22, the preloading pin 23 squeezes the side wall of the workpiece 4, and then the mounting hole 41 on the workpiece 4 is correspondingly inserted into the positioning pin 21 to realize the pre-fixation of the workpiece 4. Start the first cylinder 31, and the cylinder push block 32 moves towards the side close to the workpiece 4, driving the bottom plate 2 to move upward. The upper end surface of the bottom plate 2 and the lower end surface of the pressing plate 12 cooperate with each other to clamp the workpiece 4.

[0041] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A positioning tool, characterized in that: The invention comprises a mounting seat (1), a clamping assembly and a pressure plate (12) arranged on the mounting seat (1); the pressure plate (12) is fixedly arranged on the upper end surface of the mounting seat (1); each group of the clamping assemblies comprises a base plate (2) for supporting a workpiece (4) and a driving assembly (3) for driving the base plate (2) to move vertically; the base plate (2) is slidably connected to the mounting seat (1) in a vertical direction; the base plate (2) is arranged between the pressure plate (12) and the mounting seat (1); the workpieces (4) are respectively placed on the base plate (2); and the driving assembly (3) is arranged on the mounting seat (1).

2. A positioning tool according to claim 1, characterized in that: The driving assembly (3) comprises a first cylinder (31), a cylinder push block (32) and two optical axes (33), the two optical axes (33) are connected to the base plate (2), the two ends of the optical axes (33) are respectively fixedly connected to the mounting seat (1) and the pressing plate (12), the cylinder body of the first cylinder (31) is fixedly arranged on the side of the pressing plate (12) away from the workpiece (4), the cylinder push block (32) is slidably connected to the upper end surface of the mounting seat (1), the telescopic rod of the first cylinder (31) is fixedly connected to the cylinder push block (32), the upper end surface of the cylinder push block (32) is in contact with the lower end surface of the base plate (2), and the upper end surface of the cylinder push block (32) is tilted downward toward the side away from the first cylinder (31).

3. A positioning tool according to claim 2, characterized in that: The mounting seat (1) is provided with a clamp front protective plate (13) for limiting the position of the pressure plate (12); the clamp front protective plate (13) is fixedly arranged on the upper end surface of the mounting seat (1), and the side of the pressure plate (12) away from the first cylinder (31) abuts against the clamp front protective plate (13).

4. A positioning tool according to claim 2, characterized in that: A compression spring (331) is sleeved on the optical axis (33), and the upper and lower ends of the compression spring (331) are respectively fixedly connected to the pressure plate (12) and the bottom plate (2).

5. A positioning tool according to claim 1, characterized in that: The upper end surface of the bottom plate (2) is provided with a positioning pin (21) for positioning the workpiece (4), and the positioning pin (21) is inserted into an upper mounting hole (41) of the workpiece (4).

6. A positioning tool according to claim 5, characterized in that: The upper end surface of the positioning pin (21) is rhombus-shaped, and the upper side edge of the positioning pin (21) is provided with a chamfer.

7. A positioning tool according to claim 1, characterized in that: The bottom plate (2) is provided with an inclined surface insert (24) for supporting a first inclined surface (42) of a workpiece (4).

8. A positioning tool according to claim 1, characterized in that: The bottom plate (2) is provided with a limiting groove (22) for limiting the two sides of the workpiece (4), the inner wall of the limiting groove (22) is provided with a pre-pressing pin (23), and the top block of the pre-pressing pin (23) abuts against the side wall of the workpiece (4).

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