Vehicle body part positioning tool

Abstract

The utility model relates to a vehicle body part positioning tool which comprises a mounting base and a clamping assembly arranged on the mounting base and used for clamping a workpiece, and the clamping assembly comprises a supporting part used for supporting the workpiece, a positioning pin, a clamping block and an air cylinder used for driving the clamping block to move. The supporting part is fixedly arranged on the upper end face of the mounting base, a workpiece is placed on the upper end face of the supporting part, a fixing block is fixedly arranged on the upper end face of the supporting part, one side of the workpiece abuts against the fixing block, the positioning pin is arranged on the side, close to the workpiece, of the fixing block, and the positioning pin is connected to a main shaft hole of the workpiece in a penetrating mode. The outer wall of the positioning pin is attached to the inner wall of a main shaft hole of a workpiece, a cylinder body part of the air cylinder is fixedly arranged on the installation base, the clamping block is arranged at the tail end of a telescopic rod of the air cylinder, and the clamping block abuts against the side, away from the positioning pin, of the workpiece. The positioning device has the effect of accurately positioning the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts manufacturing, and in particular to a body parts positioning tool. Background Art

[0002] Door hinges are important parts of car doors, used to connect the door and the car body. They can open and close the door, making it convenient for drivers and passengers to get in and out. Car door hinge processing is the processing of door parts and car body parts with different structures.

[0003] like Figure 1 The workpiece 4 shown is an L-shaped door hinge, which is a body part; it includes a vertical portion 42 and a bottom plate 43 that are perpendicular to each other; a cylindrical upper end portion 41 is formed at the upper end of the vertical portion 42; a spindle hole 411 is formed in the center of the upper end portion 41.

[0004] A Chinese patent with application number 202120041378.1 discloses an automotive parts grinding fixture for quickly positioning workpieces, including a base plate, a first telescopic cylinder is connected to the upper end of the base plate, a support plate is connected to the upper end of the first telescopic cylinder, one end of a fixed rod is connected to a first clamping seat, a fixed frame is connected to the other side of the upper surface of the support plate, a second telescopic cylinder is connected to the upper end of the fixed frame, a second telescopic cylinder is connected to the telescopic end of the second telescopic cylinder is connected to the second clamping seat, the upper end of the support plate is connected to a fixed plate, a motor is connected to the fixed plate, the output end of the motor is driven and connected to a rotating shaft, one end of the rotating shaft passes through the fixed plate, one end of the rotating shaft is connected to a bidirectional screw, and both sides of the bidirectional screw are connected to a limiting mechanism.

[0005] This application clamps the workpiece by placing it between two clamps. However, during the clamping process, there is a lack of a positioning device for the workpiece, and manual positioning is required, which has low accuracy and affects product quality.

[0006] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0007] In order to improve the accuracy of workpieces during processing, the present application provides a body part positioning tool.

[0008] The present application provides a vehicle body parts positioning tool, which adopts the following technical solution:

[0009] A body part positioning tool comprises a mounting seat and a clamping assembly arranged on the mounting seat for clamping a workpiece, the clamping assembly comprises a supporting part for supporting the workpiece, a positioning pin, a clamping block and a cylinder for driving the clamping block to move, the supporting part is fixedly arranged on the upper end surface of the mounting seat, the workpiece is placed on the upper end surface of the supporting part, a fixing block is fixedly arranged on the upper end surface of the supporting part, one side of the workpiece abuts against the fixing block, the positioning pin is arranged on the side of the fixing block close to the workpiece, the positioning pin is connected to the spindle hole of the workpiece, the outer wall of the positioning pin is in contact with the inner wall of the spindle hole of the workpiece, the cylinder body part of the cylinder is fixedly arranged on the mounting seat, the clamping block is arranged at the end of the telescopic rod of the cylinder, and the clamping block abuts against the side of the workpiece away from the positioning pin.

[0010] By adopting the above technical solution, the positioning pin is inserted into the spindle hole of the workpiece, and the workpiece is rotated to be placed on the support seat, and the clamping block and the fixing block are driven by the cylinder to cooperate with each other to achieve clamping of the workpiece.

[0011] Optionally, the clamping components are divided into two groups, the two groups of clamping components are mirror-imaged on the mounting seat, and the fixing blocks of the two groups of clamping components are connected.

[0012] By adopting the above technical solution, material costs can be saved and processing efficiency can be improved.

[0013] Optionally: two abutment portions are provided on the side of the clamping block facing the workpiece, and the two abutment portions abut against the upper end portion and the vertical portion of the workpiece respectively.

[0014] By adopting the above technical solution, the two parts of the workpiece are clamped separately, thereby improving the stability of the workpiece during processing.

[0015] Optionally, the clamping block is rotatably connected to the cylinder along a vertical axis.

[0016] By adopting the above technical solution, the clamping angle between the clamping block and the workpiece is adjusted to ensure that the clamping block clamps the workpiece more stably.

[0017] Optionally: two limiting parts are arranged on one side of the clamping block close to the cylinder, and the two limiting parts are respectively arranged on both sides of the telescopic rod of the cylinder in the horizontal direction.

[0018] By adopting the above technical solution, the rotation position of the clamping block is limited, saving labor costs.

[0019] Optional: The upper end surface of the support portion is provided with an extrusion assembly for pre-fixing the workpiece, and the extrusion assembly includes a mounting portion fixedly arranged on the upper end surface of the support portion, a sliding rod, an extrusion block and a compression spring, the mounting portion is arranged on a side of the workpiece close to the base plate, the sliding rod is connected to the mounting portion, and the sliding direction of the sliding rod is perpendicular to the outer end surface of the base plate of the workpiece, the extrusion block is fixedly arranged at one end of the sliding rod close to the workpiece, the compression spring is sleeved on the sliding rod, and the two ends of the compression spring are respectively fixedly connected to the extrusion block and the mounting portion.

[0020] By adopting the above technical solution, the compression spring drives the extrusion block to move, so that the extrusion block abuts against the workpiece, thereby achieving a pre-fixing effect on the workpiece.

[0021] Optionally: a chamfer is provided at one end of the abutting portion close to the workpiece.

[0022] By adopting the above technical solution, when placing the workpiece on the support seat,

[0023] Optionally: the support portion is provided with a first groove for making way for the workpiece, and the first groove is in contact with the lower end surface of the workpiece.

[0024] By adopting the above technical solution, interference between the workpiece and the supporting part can be prevented during the rotation of the workpiece.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The present application improves the accuracy of workpiece positioning through the cooperation between the positioning pin and the supporting part.

[0027] 2. The workpiece is clamped by bringing the clamping block and the fixing block closer to each other, making the workpiece more stable during the processing.

[0028] 3. The workpiece is pre-fixed by the extrusion assembly to ensure that the workpiece will not deviate during the clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the workpiece;

[0030] Figure 2 A schematic diagram of the structure of an embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of the bearing seat structure of an embodiment of the present application;

[0032] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A.

[0033] In the figure, 1, mounting seat; 2, clamping assembly; 21, supporting portion; 211, fixing block; 212, arc surface; 213, first groove; 22, positioning pin; 23, clamping block; 231, abutting portion; 232, limiting portion; 24, cylinder; 3, extrusion assembly; 31, mounting portion; 32, sliding rod; 33, extrusion block; 34, compression spring; 4, workpiece; 41, upper end portion; 411, spindle hole; 42, vertical portion; 43, bottom plate. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application discloses a vehicle body positioning tool, such as Figure 2 and Figure 3 As shown, it includes a mounting seat 1, on which are arranged two groups of clamping assemblies 2 for clamping a workpiece 4, each group of clamping assemblies 2 includes a supporting portion 21 for supporting the workpiece 4, a positioning pin 22, a clamping block 23 and a cylinder 24 for driving the clamping block 23 to move, the supporting portion 21 is fixed on the mounting seat 1 by bolts, and the upper end surface of the supporting portion 21 is provided with a first arcuate surface 212 for matching the workpiece 4, when the workpiece 4 is placed on the supporting portion 21, the workpiece 4 and the first arcuate surface 212 of the supporting portion 21 fit together, thereby ensuring the stability of the workpiece 4 during processing.

[0036] like Figure 1 and Figure 3 As shown, the upper end surface of the support portion 21 is provided with a fixed block 211 for supporting the side wall of the workpiece 4, the side wall of the workpiece 4 and the side wall of the fixed block 211 are fitted with each other, and the positioning pin 22 is provided on the fixed block 211. The positioning pin 22 is connected to the spindle hole 411 of the workpiece 4, and the outer wall of the positioning pin 22 is abutted against the inner wall of the spindle hole 411 to limit the workpiece 4 during the processing. The side of the positioning pin 22 away from the fixed block 211 is provided with a chamfer to facilitate the insertion of the positioning pin 22 into the spindle hole 411 of the workpiece 4.

[0037] The two groups of clamping assemblies 2 are arranged on the mounting seat 21 along a certain basic radial direction, and the fixing blocks 211 of the two groups of clamping assemblies 2 are connected to improve the processing efficiency of the clamping assemblies 2 on the workpiece 4.

[0038] The upper end surface of the support portion 21 is provided with a first groove 213 for making way for the upper end portion 41 of the workpiece 4. The fixing block 211 is arranged in the first groove 213. The first groove 213 is arranged on the lower side of the positioning pin 22 to prevent interference between the upper end portion 41 of the workpiece 4 and the upper end surface of the support portion 21 during the rotation of the workpiece 4.

[0039] like Figure 2As shown, the cylinder body of the cylinder 24 is fixedly arranged on the support part 21, and the position of the cylinder 24 is located on the side of the workpiece 4 away from the positioning pin 22. The clamp block 23 rotates along the vertical axis and is connected to the end of the telescopic rod of the cylinder 24 to adjust the clamping angle between the clamp block and the workpiece to ensure that the clamp block clamps the workpiece more stably. The clamp block 23 is provided with two abutment parts 231 at one end facing the workpiece 4. The two abutment parts 231 are arranged horizontally on both sides of the clamp block 23. When the clamp block 23 is driven by the cylinder 24 to approach the workpiece 4, the two abutment parts 231 on the clamp block 23 abut against the upper end 41 and the vertical part 42 of the workpiece 4 respectively, reducing the contact area between the clamp block 4 and the workpiece, increasing the friction between the clamp block 23 and the workpiece, and preventing the workpiece 4 from sliding sideways during the processing, which affects the processing accuracy. The workpiece 4 is clamped by the mutual extrusion and cooperation between the abutment part 231 and the fixed block 211.

[0040] Two limiting parts 232 are provided on one side of the clamping block 23 close to the cylinder body of the cylinder 24. The two limiting parts 232 are respectively provided on both sides of the telescopic rod of the cylinder 24. When the clamping block 23 rotates, the two limiting blocks limit the rotation angle of the clamping block 23, so that the abutting part 231 abuts against the workpiece 4 during the movement of the clamping block 23.

[0041] like Figure 3 and Figure 4 As shown, the upper end surface of the support portion 21 is provided with an extrusion assembly 3 for pre-fixing the workpiece 4. The extrusion assembly 3 includes a mounting portion 31 fixedly arranged on the upper end surface of the support portion 21, a slide bar 32, an extrusion block 33 and a compression spring 34. The mounting portion 31 is arranged on the side of the workpiece 4 close to the bottom plate 43. The mounting portion 31 and the support portion 21 are detachably connected, so as to facilitate the replacement of the mounting portion 31. The slide bar 32 is connected to the mounting portion 31, and the sliding direction of the slide bar 32 is perpendicular to the outer end surface of the bottom plate 43 of the workpiece 4. The extrusion block 33 is fixedly arranged at one end of the slide bar 32 close to the workpiece 4, and the compression spring 34 is sleeved on the slide bar 32. The two ends of the compression spring 34 are respectively fixedly connected to the extrusion block 33 and the mounting portion 31. The side of the extrusion block 33 close to the workpiece 4 is provided with a chamfer. When the workpiece 4 is moved downward, the workpiece 4 abuts against the extrusion block 33 downward, and the extrusion block 33 overcomes the compression spring 34 and moves toward the side close to the mounting portion 31. Under the action of the compression spring 34 , the extrusion block 33 and the positioning pin 22 cooperate with each other to achieve pre-fixation of the workpiece 4 , making it easier for the subsequent cylinder 24 to drive the clamping block 23 to clamp the workpiece 4 .

[0042] The implementation principle of this embodiment is:

[0043] By inserting the locating pin 22 into the spindle hole 411 of the workpiece 4 and rotating the workpiece 4, the workpiece 4 abuts downward against the upper end surface of the support portion 21. Under the action of the compression spring 34, the extrusion block 33 and the locating pin 22 cooperate with each other to pre-fix the workpiece 4. The cylinder 24 is started and the cylinder 24 drives the clamping block 23 to move. The abutting portion 231 of the clamping block 23 and the fixing block 211 on the support portion 21 cooperate with each other to fix the workpiece 4.

[0044] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vehicle body parts positioning tool, characterized in that: The invention comprises a mounting seat (1) and a clamping assembly (2) arranged on the mounting seat (1) for clamping a workpiece (4), wherein the clamping assembly (2) comprises a supporting portion (21) for supporting the workpiece (4), a positioning pin (22), a clamping block (23) and a cylinder (24) for driving the clamping block (23) to move, wherein the supporting portion (21) is fixedly arranged on the upper end surface of the mounting seat (1), the workpiece (4) is placed on the upper end surface of the supporting portion (21), a fixing block (211) is fixedly arranged on the upper end surface of the supporting portion (21), and one side of the workpiece (4) is fixedly fixed to the fixing block (211). Abutting against the fixing block (211), the positioning pin (22) is arranged on a side of the fixing block (211) close to the workpiece (4), the positioning pin (22) is connected to the spindle hole (411) of the workpiece (4), the outer wall of the positioning pin (22) is in contact with the inner wall of the spindle hole (411) of the workpiece (4), the cylinder body of the cylinder (24) is fixedly arranged on the mounting seat (1), the clamping block (23) is arranged at the end of the telescopic rod of the cylinder (24), and the clamping block (23) abuts against a side of the workpiece (4) away from the positioning pin (22).

2. The vehicle body part positioning tool according to claim 1, characterized in that: The clamping components (2) are divided into two groups. The two groups of clamping components (2) are arranged on the mounting seat (1) in a mirror-image manner, and the fixing blocks (211) of the two groups of clamping components (2) are connected.

3. The vehicle body part positioning tool according to claim 1, characterized in that: The clamping block (23) is provided with two abutment portions (231) on one side facing the workpiece (4), and the two abutment portions (231) respectively abut against the upper end portion (41) and the vertical portion (42) of the workpiece (4).

4. The vehicle body part positioning tool according to claim 1, characterized in that: The clamping block (23) is rotatably connected to the cylinder (24) along a vertical axis.

5. The vehicle body part positioning tool according to claim 4, characterized in that: Two limiting portions (232) are arranged on one side of the clamping block (23) close to the cylinder (24), and the two limiting portions (232) are respectively arranged on both sides of the telescopic rod of the cylinder (24) in the horizontal direction.

6. The vehicle body part positioning tool according to claim 1, characterized in that: The upper end surface of the support portion (21) is provided with an extrusion assembly (3) for pre-fixing the workpiece (4), and the extrusion assembly (3) includes a mounting portion (31) fixedly arranged on the upper end surface of the support portion (21), a slide bar (32), an extrusion block (33) and a compression spring (34), wherein the mounting portion (31) is arranged on a side of the workpiece (4) close to the bottom plate (43), the slide bar (32) is connected to the mounting portion (31), and the sliding direction of the slide bar (32) is perpendicular to the outer end surface of the bottom plate (43) of the workpiece (4), the extrusion block (33) is fixedly arranged on one end of the slide bar (32) close to the workpiece (4), the compression spring (34) is sleeved on the slide bar (32), and the two ends of the compression spring (34) are respectively fixedly connected to the extrusion block (33) and the mounting portion (31).

7. The vehicle body part positioning tool according to claim 3, characterized in that: One end of the abutting portion (231) close to the workpiece (4) is provided with a chamfer.

8. The vehicle body part positioning tool according to claim 1, characterized in that: The support portion (21) is provided with a first groove (213) for making way for the workpiece (4), and the first groove (213) is fitted to the lower end surface of the workpiece (4).

Images