Automobile hinge positioning jig

Abstract

The utility model relates to an automobile hinge positioning jig which comprises a positioning seat, a positioning block arranged on the positioning seat, a horizontal positioning piece pushing a workpiece to move horizontally and abutting against the positioning block and a vertical positioning piece applying downward pressure to the workpiece. The positioning groove penetrates through the two adjacent side walls of the positioning block, a workpiece is arranged in the positioning groove, the two side walls of the positioning groove are attached to the outer surface of the workpiece, and the horizontal positioning piece is used for applying force towards the interior of the positioning groove to the concave position of the workpiece. The workpiece is pushed by the horizontal positioning piece to move horizontally and move to the needed position, then the vertical positioning piece is used for applying downward pressure to the workpiece so that the position of the workpiece can be limited, the whole workpiece is not prone to moving under the condition that the workpiece is stressed, and therefore the workpiece can be stably positioned.

Description

Technical Field

[0001] This application relates to the technical field of jigs, and particularly to an automotive hinge positioning jig. Background Art

[0002] An automotive hinge is a connecting component between a car door and a vehicle body, which enables the car door to be connected to the vehicle body and rotate. The automotive hinge includes a body hinge connected to the vehicle body and a door hinge connected to the car door. During the processing, both the door hinge and the body hinge need to be fixed to a machine tool by a jig and processed using the machine tool.

[0003] Chinese Patent with application number [application number not provided] discloses a special pneumatic fixture for automotive hinges, including a workbench, a lever seat, and a pressing rod. A lever seat is arranged in the middle of the workbench. A lever is hinged at the upper end of the lever seat. One end of the lever is hinged to the piston rod of a cylinder arranged on the workbench, and the other end of the lever is hinged to one end of a pressing rod for pressing the automotive hinge. A stop rod with one end close to the middle of the pressing rod is arranged on the lever seat near the pressing rod side. A positioning plate group for positioning the automotive hinge is arranged on the workbench on the side of the pressing rod. The positioning plate group includes a first positioning plate, a second positioning plate, and a third positioning plate. The third positioning plate is horizontally arranged on the workbench. A vertically arranged first positioning plate is arranged on the right side of the third positioning plate, and a vertically arranged second positioning plate is arranged on the rear side of the third positioning plate.

[0004] In the above solution, the automotive hinge is directly placed on the fixture, and then pressure is applied to the corner of the automotive hinge to make it abut against and be limited by the positioning plate group. However, during the positioning process, pressure is applied to the automotive hinge from top to bottom along a circular trajectory. Therefore, when the placement position of the automotive hinge is not accurate enough, the upper end of the automotive hinge will rotate towards the direction away from the position where the force is applied, thus affecting the stable fixation of the automotive hinge.

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

[0006] In order to make the positioning of the workpiece more stable, this application provides an automotive hinge positioning jig.

[0007] An automotive hinge positioning jig provided by this application adopts the following technical solutions:

[0008] An automobile hinge positioning jig, comprising a positioning seat, a positioning block arranged on the positioning seat, a horizontal positioning member for pushing the workpiece to move horizontally and abut against the positioning block, and a vertical positioning member for applying a downward pressure to the workpiece. A positioning groove is arranged on the positioning block, and the positioning groove penetrates through two adjacent side walls of the positioning block. The workpiece is arranged in the positioning groove, and two side walls of the positioning groove are attached to the outer surface of the workpiece. The horizontal positioning member is used to apply a force towards the inside of the positioning groove to the concave part of the workpiece.

[0009] By adopting the above technical solution, the horizontal positioning member is used to push the workpiece to move horizontally and move the workpiece to the required position. Then, the vertical positioning member is used to apply a downward pressure to the workpiece, so as to limit the position of the workpiece. When the workpiece is under force, the whole workpiece is not easy to move, so that the workpiece can be stably positioned.

[0010] Optionally: The horizontal positioning member includes a pushing block for abutting against the workpiece and a horizontal driving member for driving the pushing block to move horizontally. A pushing surface adapted to the side wall of the concave part of the workpiece is arranged at one end of the pushing block close to the workpiece, and the pushing surface is attached to the side wall of the workpiece.

[0011] By adopting the above technical solution, when the pushing block pushes the workpiece to move, the pushing block can keep in contact with the inner wall of the workpiece, so that the surface quality of the workpiece is not easily affected when the workpiece is under force.

[0012] Optionally: The moving direction of the horizontal driving member coincides with the angular bisector of the angle between the two vertical side walls of the positioning groove.

[0013] By adopting the above technical solution, when pushing the workpiece to move horizontally, the pushing block drives the workpiece to move until it abuts against one side wall of the positioning groove. Then, the workpiece continues to be pushed by the pushing block until it abuts against the other side wall of the positioning groove, so that the positioning of the workpiece is more accurate and convenient.

[0014] Optionally: Relief grooves are arranged on both the upper end surface and the lower end surface of the pushing block, and the relief grooves penetrate through three vertical side walls of the pushing block close to the workpiece.

[0015] By adopting the above technical solution, when the pushing block abuts against the workpiece, the cutting tool for machining the workpiece will not directly contact the pushing block, and the pushing block will not directly contact the positioning groove, so that the use of the pushing block is stable.

[0016] Optionally: A lifting block is arranged at the bottom of the positioning groove. The upper end of the lifting block is used to abut against the lower end of the workpiece. The lifting block is arranged in an L shape, and the width of the lifting block is smaller than the width of the part where the workpiece is processed.

[0017] By adopting the above technical solution, the workpiece is lifted upward by the lifting block so that the upper end of the workpiece is higher than the upper end of the positioning block, making it more convenient for the tool to process the workpiece.

[0018] Optionally: a sunken groove is further provided at the bottom of the positioning groove. The sunken groove is arranged inside the lifting block and there is a gap between the sunken groove and the side wall of the lifting block. The sunken groove penetrates through the side wall of the positioning block close to the horizontal positioning member.

[0019] By adopting the above technical solution, when it is necessary to remove or load the processed workpiece, the finger can be inserted into the sunken groove to apply force to the workpiece, thereby making it more convenient to pick up and place the workpiece.

[0020] Optionally: the vertical positioning member includes a lever rotatably connected to the positioning seat, a pressing block fixed to one end of the lever, and a vertical driving member for driving the lever to rotate. The vertical driving member and the pressing block are respectively arranged on both sides of the rotation axis of the lever. The pressing block is used to abut against the upper end of the workpiece.

[0021] By adopting the above technical solution, after the horizontal position of the workpiece is limited, the pressing block applies a downward pressure to the workpiece, thereby limiting the vertical position of the workpiece.

[0022] Optionally: a plurality of air blowing holes are arranged on the inner wall of the positioning groove. The lower ends of the air blowing holes are flush with the upper end of the lifting block. The air blowing holes are communicated with an air pump.

[0023] By adopting the above technical solution, after processing a workpiece and removing it, the air blowing holes blow air on the upper end surface of the lifting block to blow away iron chips, thereby keeping the upper end surface of the lifting block clean and ensuring accurate positioning of the workpiece.

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

[0025] 1. The horizontal positioning member applies a thrust to the workpiece to limit the horizontal position of the workpiece, and then the vertical positioning member applies a downward pressure to the workpiece to limit the vertical position of the workpiece;

[0026] 2. Before the workpiece is placed on the lifting block, the air blowing holes are used to remove debris on the lifting block, thereby ensuring accurate positioning of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of an embodiment of the present application for showing the structure of the positioning block.

[0029] In the figure, 1 is a positioning seat; 11 is a guiding seat; 12 is a guiding column; 13 is a mounting seat; 2 is a positioning block; 21 is a positioning groove; 22 is a telescopic groove; 23 is a lifting block; 24 is a sinking groove; 25 is a blowing hole; 3 is a horizontal positioning member; 31 is a pushing block; 311 is a pushing surface; 312 is a relief groove; 32 is a horizontal driving member; 4 is a vertical positioning member; 41 is a lever; 42 is a pressing block; 43 is a vertical driving member. Detailed implementation mode

[0030] The following further elaborates on this application in conjunction with the attached drawings.

[0031] An automotive hinge positioning fixture disclosed in this application, as Figure 1 shown, includes a positioning seat 1, a positioning block 2 fixed to the positioning seat 1 using bolts, a horizontal positioning member 3 for pushing the workpiece to move horizontally, and a vertical positioning member 4 for applying a downward pressure to the workpiece. The positioning block 2 is arranged in a rectangle, and a positioning groove 21 capable of adapting to the outer wall of the workpiece is opened at its upper end. The positioning groove 21 penetrates through two adjacent side walls of the positioning block 2 vertically. The workpiece is arranged in the positioning groove 21, and two adjacent outer walls of the workpiece respectively abut against two inner walls of the positioning groove 21 arranged vertically, thereby limiting the position of the workpiece using the positioning groove 21. At the same time, in order to enable the workpiece to closely fit on the positioning groove 21, telescopic grooves 22 are commonly opened on two adjacent side walls of the positioning groove 21. The telescopic grooves 22 penetrate through the upper end of the positioning block 2. The corners of the workpiece are arranged in the telescopic grooves 22, so that the workpiece can be stably placed in the positioning groove 21 for positioning.

[0032] The horizontal positioning member 3 includes a pushing block 31 for abutting against the workpiece and a horizontal driving member 32 for driving the pushing block 31 to move horizontally. The horizontal driving member 32 is selected as a hydraulic cylinder in this embodiment. A vertically arranged guiding seat 11 is fixed to the positioning seat 1 using bolts. A rectangular guiding column 12 is horizontally penetrated in the guiding seat 11. Both ends of the guiding column 12 are located outside the guiding seat 11 and are in sliding fit with the guiding column 12. The horizontal driving member 32 is fixed to the positioning seat 1 using bolts. The driving end of the horizontal driving member 32 is fixed to the end of the guiding column 12 away from the positioning block 2. The pushing block 31 is fixed to the end of the guiding column 12 close to the positioning block 2 using bolts. And a pushing surface 311 adapted to the side wall of the recess of the workpiece is arranged at the end of the pushing block 31 close to the positioning block 2. The pushing surfaces 311 respectively fit on two inner walls of the workpiece. The pushing block 31 moves towards the inner wall of the workpiece, thereby pushing the workpiece to fit on the inner wall of the positioning groove 21, so that the position of the workpiece is limited.

[0033] An installation base 13 is also fixed on the base by bolts. The vertical positioning member 4 includes a lever 41 rotatably connected to the installation base 13, a pressing block 42 fixed to one end of the lever 41, and a vertical driving member 43 for driving the lever 41 to rotate. In this embodiment, the vertical driving member 43 is selected as a hydraulic cylinder. The cylinder body of the vertical driving member 43 is rotatably connected to the installation base 13, and the piston rod of the vertical driving member 43 is rotatably connected to one end of the lever 41. The pressing block 42 is arranged at the other end of the lever 41 away from the vertical driving member 43. The lower end of the pressing block 42 is used to abut against the upper end surface of the workpiece, so as to limit the vertical position of the workpiece.

[0034] In order to ensure that the workpiece can always maintain a stable connection with the positioning groove 21 after being pushed, the moving direction of the free end of the horizontal driving member 32 coincides with the angular bisector of the angle between the two side walls of the positioning groove 21. Thus, when the pushing block 31 applies a force to the workpiece, it can drive the workpiece to move towards the angle of the positioning groove 21. When one outer wall of the workpiece abuts against the positioning groove 21, it can still drive the workpiece to move horizontally along the already-abutted outer wall, so that the workpiece abuts against the two inner walls of the positioning groove 21 simultaneously, realizing the stable positioning of the positioning groove 21.

[0035] In order to prevent the pushing member from directly contacting the positioning block 2 during the horizontal movement of the pushing member, and to ensure that the cutting tool during the machining process is not obstructed by the pushing block 31 after the position of the workpiece is limited by the pushing block 31. Relief grooves 312 are provided on both the upper and lower surfaces of the pushing block 31. The relief grooves 312 penetrate through the vertical side wall of the pushing block 31 close to the workpiece and two adjacent vertical side walls. When the pushing block 31 abuts against the workpiece, the lower end surface of the upper relief groove 312 is lower than the upper end surface of the workpiece, and the upper end surface of the lower relief groove 312 is higher than the lower end surface of the workpiece, so that the movement of the pushing block 31 and the machining of the workpiece are not easily affected.

[0036] As Figure 2 shown, in order to ensure that the upper end of the workpiece is higher than the upper end surface of the positioning block 2 during the machining process, so that the movement of the cutting tool during the machining process is not easily obstructed, a lifting block 23 for lifting the workpiece upward is also provided in the positioning groove 21. The vertical side wall of the lifting block 23 fits with the side wall of the positioning groove 21. The lower end surface of the lifting block 23 abuts against the bottom surface of the positioning groove 21, and the upper end surface of the lifting block 23 abuts against the lower end surface of the workpiece. Moreover, the width of the lifting block 23 is smaller than the width at the machining position of the workpiece. The workpiece is lifted upward by the lifting block 23, so that the upper end of the workpiece can be higher than the positioning block 2. The machining of the upper end of the workpiece is more convenient. At the same time, the side surface of the workpiece protrudes from the lifting block 23, making it more convenient to take the workpiece.

[0037] To make it easier for the hand to reach under the workpiece, a sunken groove 24 is also formed at the bottom of the positioning groove 21. The sunken groove 24 is arranged on the inner wall of the lifting block 23 and there is a gap between the sunken groove 24 and the inner wall of the lifting block 23. The sunken groove 24 penetrates through the two vertical side walls of the positioning block 2 close to the horizontal positioning member 3. The space at the lower end face of the workpiece is increased by the sunken groove 24, making it easier for the fingers to reach under the workpiece and take out the workpiece from the positioning groove 21.

[0038] Since there will be metal chips falling during the processing, if the metal chips directly fall into the positioning groove 21, it will affect the positioning of the workpiece. Therefore, a number of air blowing holes 25 are also formed on the inner wall of the positioning groove 21. The air blowing holes 25 are commonly connected to an air pump, and the air pump supplies air into the air blowing holes 25. The lower end face of the air blowing hole 25 is flush with the upper end face of the lifting block 23, so that the air blown out from the air blowing holes 25 blows the chips at the upper end of the lifting block 23, causing the chips to break away from the lifting block 23, thus keeping the positioning of the workpiece accurate.

[0039] The implementation principle of this embodiment is as follows: after the workpiece is placed on the lifting block 23, the pushing block 31 abuts against the workpiece under the push of the horizontal driving member 32 and pushes the workpiece to move towards the positioning groove 21, so that the outer wall of the workpiece is kept in contact with the inner wall of the positioning groove 21. Then, the vertical driving member 43 drives one end of the lever 41 to rotate upward, causing the pressing member to move downward and abut against the upper end of the workpiece, thereby limiting the position of the workpiece.

[0040] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An automobile hinge positioning fixture, characterized in that: The invention comprises a positioning seat (1), a positioning block (2) arranged on the positioning seat (1), a horizontal positioning member (3) for pushing a workpiece to move horizontally and abutting against the positioning block (2), and a vertical positioning member (4) for applying downward pressure to the workpiece, wherein the positioning block (2) is provided with a positioning groove (21), the positioning groove (21) penetrates two adjacent side walls of the positioning block (2), the workpiece is arranged in the positioning groove (21), the two side walls of the positioning groove (21) are in contact with the outer surface of the workpiece, and the horizontal positioning member (3) is used to apply a force toward the inside of the positioning groove (21) to the recessed part of the workpiece.

2. The automobile hinge positioning fixture according to claim 1, characterized in that: The horizontal positioning member (3) comprises a pushing block (31) for abutting against the workpiece and a horizontal driving member (32) for driving the pushing block (31) to move horizontally, and the pushing block (31) is provided with a pushing surface (311) adapted to the side wall of the recessed part of the workpiece at one end thereof close to the workpiece, and the pushing surface (311) is in contact with the side wall of the workpiece.

3. The automobile hinge positioning fixture according to claim 2, characterized in that: The moving direction of the horizontal driving member (32) coincides with the bisector of the angle between two vertical side walls of the positioning groove (21).

4. The automobile hinge positioning fixture according to claim 2, characterized in that: The upper end surface and the lower end surface of the pushing block (31) are both provided with clearance grooves (312), and the clearance grooves (312) penetrate three vertical side walls of the pushing block (31) close to the workpiece.

5. The automobile hinge positioning fixture according to claim 1, characterized in that: A lifting block (23) is arranged at the bottom of the positioning groove (21), the upper end of the lifting block (23) is used to abut against the lower end of the workpiece, the lifting block (23) is arranged in an L shape, and the width of the lifting block (23) is smaller than the width of the part where the workpiece processing position is located.

6. The automobile hinge positioning jig according to claim 5, characterized in that: A sinking groove (24) is also provided at the bottom of the positioning groove (21). The sinking groove (24) is provided on the inner side of the lifting block (23) and a gap is left between the side wall of the lifting block (23). The sinking groove (24) penetrates the side wall of the positioning block (2) close to the horizontal positioning piece (3).

7. The automobile hinge positioning fixture according to claim 1, characterized in that: The vertical positioning member (4) comprises a lever (41) rotatably connected to the positioning seat (1), a lower pressing block (42) fixed to one end of the lever (41), and a vertical driving member (43) for driving the lever (41) to rotate. The vertical driving member (43) and the lower pressing block (42) are respectively arranged on both sides of the rotation axis of the lever (41), and the lower pressing block (42) is used to abut against the upper end of the workpiece.

8. The automobile hinge positioning fixture according to claim 5, characterized in that: A plurality of blowing holes (25) are arranged on the inner wall of the positioning groove (21), the lower ends of the blowing holes (25) are flush with the upper ends of the lifting blocks (23), and the blowing holes (25) are connected to an air pump.

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