Truck door hinge positioning tool

Abstract

The utility model relates to the technical field of machining clamps, in particular to a truck door hinge positioning tool which comprises a bottom plate, a pressing assembly used for fixing a workpiece is arranged on the bottom plate, the bottom plate is fixedly arranged on a numerical control rotary table, at least two clamp seats are further fixedly arranged on the bottom plate, and the clamp seats are fixedly arranged on the numerical control rotary table. The same workpiece is placed on the multiple clamp bases at the same time, and the pressing assemblies abut against the sides, away from the clamp bases, of the workpieces. The distance between the workpiece and the base is increased through the clamp base, meanwhile, the workpiece is drilled after the bottom plate is rotated through the numerical control rotary table, the probability that a cutter makes contact with the bottom plate during drilling is reduced, and the problem that the machining quality is affected due to the fact that the cutter possibly makes contact with the base in the machining process is solved.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing fixtures, and in particular to a truck door hinge positioning tool. Background Art

[0002] Truck door hinges are parts used to realize the hinged connection between the truck door and the truck body. Figure 1 The truck door hinge is arched as a whole, with the end protruding from the arch as the upper end. The widths of the two ends of the truck door hinge in the length direction are different. Both the large width end and the small width end are provided with mounting holes in the horizontal direction, and a fixing plate is integrally formed on the upper surface of the large width end. Two connection holes are provided in the middle of the truck door hinge, and the penetration direction of the connection holes is consistent with the penetration direction of the mounting holes. A through hole is provided on the upper surface of the middle of the truck door hinge near the small width end, and the penetration direction of the through hole is perpendicular to the penetration direction of the mounting hole.

[0003] When processing truck door hinges, it is necessary to drill or bore holes on the one-piece blank to form corresponding mounting holes, connecting holes and through holes, so it is necessary to use a positioning tool to position it on the lathe. Chinese Patent Announcement No. CN213646737U, announcement date July 9, 2021, the name of the invention is a large hinge processing fixture, the application discloses that the fixture includes a base, and the base is provided with a limit column, a clamping assembly and a positioning assembly. When the workpiece is placed on the base, the limit column limits the position of the limit block, the positioning assembly assists in positioning the workpiece, and finally the clamping assembly is used to position the workpiece before the workpiece is processed by the CNC machining center.

[0004] In the above-mentioned related art, the workpiece is placed on the base and then positioned, pressed and processed. However, when drilling or boring the workpiece, the distance between the workpiece and the base is too close, and the drill bit or boring tool may hit the base during the processing, thereby causing damage to the tool or the base, and may also affect the processing quality of the workpiece. Utility Model Content

[0005] In order to improve the problem that the tool may hit the base during the processing and affect the processing quality, the present application provides a truck door hinge positioning tool.

[0006] The present application provides a truck door hinge positioning tool, which adopts the following technical solution:

[0007] A truck door hinge positioning tool comprises a base plate, on which a clamping assembly for fixing a workpiece is arranged, the base plate is fixedly arranged on a CNC turntable, at least two clamp seats are also fixedly arranged on the base plate, and the same workpiece is placed on several clamp seats at the same time, and the clamping assembly abuts against the side of the workpiece away from the clamp seat.

[0008] By adopting the above technical solution, the positioning height of the workpiece is raised by using the fixture seat, thereby increasing the distance between the workpiece and the base, so as to increase the operating space of the tool and reduce the probability of the tool touching the base when drilling; in addition, the base plate is set on the CNC turntable, and the rotatable characteristic of the CNC turntable is utilized to rotate the base before drilling the workpiece, so that the base plate can avoid the tool during tool processing and the probability of the tool touching the base when drilling can be reduced; the problem that the tool may touch the base during processing and affect the processing quality is improved.

[0009] Optionally, two of the clamp seats are respectively placed at two ends of the workpiece, and limit blocks are fixedly provided on the clamp seats located at both ends of the workpiece, and the limit blocks are all abutted against the ends of the workpiece; a plurality of support blocks are also provided on the bottom plate, and the plurality of support blocks are evenly distributed along the outer edge of the workpiece, and the plurality of support blocks are all abutted against the outer edge of the workpiece.

[0010] By adopting the above technical solution, the limit block and the support block can limit the outer edge position of the workpiece to assist in positioning the workpiece in the direction horizontal to the base plate. The clamp seat and the clamping assembly can limit the upper and lower surfaces of the workpiece to position the workpiece in the direction perpendicular to the base plate, thereby realizing multi-directional positioning of the workpiece and improving the workpiece positioning effect.

[0011] Optionally, the clamping assembly includes a locking rod threadedly connected to the base plate, an end block is fixed to the end of the locking rod away from the base plate, and the cross-sectional area of ​​the end block is larger than the cross-sectional area of ​​the locking rod; a clamping block is slid through and provided on the locking rod, a reference rod is provided on the side wall of the clamping block facing the base plate, the end of the reference rod facing the base plate can abut against the base plate, and the clamping block is pressed against the workpiece when the reference rod abuts against the base plate.

[0012] By adopting the above technical scheme, when the locking rod is threadedly connected to the base plate and the depth of the threaded connection is continuously deepened, the clamping block can be driven by the end block to approach the base plate until the clamping block abuts against the surface of the workpiece and no longer moves. At this time, the locking rod continues to be rotated to drive the end block to abut against the clamping block, thereby making the clamping block and the workpiece abut against each other to achieve clamping positioning; the setting of the reference rod can limit the descending end point of the clamping block, so that the reference rod and the workpiece can react to the clamping block together in the locked state, and the clamping block remains parallel to the upper surface of the workpiece when locked, so that the clamping block can be pressed against the workpiece in the form of surface contact, thereby reducing the probability of damage to the workpiece or the clamping block due to the clamping rod being locked too deeply, causing the clamping block to tilt and form a line contact with the workpiece.

[0013] Optionally, a threaded section is provided on a side of the reference rod facing the pressing block, the threaded section extends along the length direction of the reference rod, and the threaded section is threadedly connected to the pressing block.

[0014] By adopting the above technical solution, adjusting the depth of the threaded connection between the reference rod and the clamping block can adjust the reference height when the workpiece is clamped, that is, adjust the lower limit height when the clamping block is pressed down, so that the clamping assembly can be suitable for the processing and clamping requirements of workpieces of different thicknesses.

[0015] Optionally, a washer is sleeved on the locking rod, the washer is located between the end block and the pressing block, and the cross-sectional area of ​​the washer is larger than the cross-sectional area of ​​the end block.

[0016] By adopting the above technical solution, when the clamping assembly clamps and positions the workpiece, the end block can first be pressed against the gasket, and the gasket can then be pressed against the clamping block. Since the area of ​​the gasket is larger than the area of ​​the end block, it is beneficial to disperse the pressure of the end block on the clamping block, which is beneficial to reduce the probability of the end block causing scratches on the clamping block, and further helps to protect the clamping block and extend the service life of the clamping assembly.

[0017] Optionally, an end ball screw is threadedly connected to a limit block of one of the clamp seats located at both ends of the workpiece, and the abutting end of the end ball screw abuts against the end of the workpiece.

[0018] By adopting the above technical solution, the end ball screw can make the workpiece abut against another fixture seat. On the one hand, it can limit the position of the workpiece on the fixture seat, making the position of the workpiece on the fixture seat more precise. On the other hand, it can also form pressure on the workpiece through the spring inside the end ball screw to position it, thereby enhancing the positioning effect of the workpiece.

[0019] Optionally, an edge ball screw is threadedly connected to the abutment block located on the same side of the workpiece, and the abutment end of the edge ball screw abuts against the outer edge of the workpiece.

[0020] By adopting the above technical solution, the edge ball screw can abut the workpiece against the support block on the other side, thereby limiting the position of the workpiece between the support blocks, making the position of the workpiece more precise. The spring inside the edge ball screw can also form additional pressure on the workpiece to assist in positioning, thereby enhancing the positioning effect of the workpiece.

[0021] Optionally, a hook-shaped block is provided on the edge of the clamp seat facing the clamp seat, and the inner wall of the hook-shaped block can abut against the side wall of the ball screw on the fixing plate facing the edge.

[0022] By adopting the above technical solution, when the hook block abuts against the fixed plate, it can drive the workpiece closer to the support block away from the edge ball screw, so that the position of the workpiece between the support blocks can be further precise, reducing the probability of workpiece deviation during the clamping process of the clamping assembly, which is beneficial to improving the positioning effect of the workpiece.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Use the fixture seat to increase the distance between the workpiece and the base, and use the CNC turntable to rotate the base plate before drilling the workpiece, so as to reduce the probability of the tool touching the base plate during drilling and improve the problem that the tool may touch the base during processing, thus affecting the processing quality;

[0025] 2. The limit block and the support block can assist in positioning the workpiece in a horizontal position relative to the base plate, and the fixture seat and the clamping assembly can position the workpiece in a vertical position relative to the base plate, thereby achieving multi-directional positioning of the workpiece and improving the positioning effect of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an appearance diagram of a truck door hinge in the prior art.

[0027] Figure 2 It is an overall diagram of a truck door hinge positioning tooling according to an embodiment of the present application.

[0028] Figure 3 This is a structural diagram of a clamp seat located at the small width end of a truck door hinge according to an embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the support block structure of an embodiment of the present application.

[0030] Figure 5 This is a structural diagram of a clamping assembly located at the wide end of a truck door hinge according to an embodiment of the present application.

[0031] Explanation of the accompanying drawings: 1. Truck door hinge; 101. Mounting hole; 102. Fixing plate; 103. Connecting hole; 104. Through hole; 2. Bottom plate; 3. Clamp seat; 301. Limit block; 302. End ball screw; 303. Housing; 304. Ball; 305. Spring; 4. Leaning block; 401. Edge ball screw; 5. Clamping assembly; 501. Locking rod; 502. End block; 503. Clamping hole; 504. Clamping block; 505. Washer; 506. Reference rod; 507. Hook block. DETAILED DESCRIPTION

[0032] The following is combined with Figures 2 to 5 This application is described in further detail.

[0033] The present application embodiment discloses a truck door hinge positioning tool, referring to Figure 2, including a base plate 2 fixed on a CNC turntable, at least two fixture seats 3 are connected to the base plate 2 by bolts, and the truck door hinge 1 (i.e., the workpiece) is placed on the upper surface of several fixture seats 3 with one end protruding in an arch upward, and the axes of the mounting holes 101 at both ends of the truck door hinge 1 are parallel to the plane where the base plate 2 is located. In the embodiment of the present application, the number of fixture seats 3 is set to two, and the two fixture seats 3 are respectively placed at the two ends of the workpiece to lift the workpiece and limit the positions of the two ends of the workpiece. A number of support blocks 4 are also fixed on the base plate 2 by bolts. In the embodiment of the present application, the number of support blocks 4 is set to four in total, and the four support blocks 4 are evenly distributed along the outer edge of the workpiece, and the four support blocks 4 are all abutted against the outer edge of the workpiece. The abutting positions of the fixture seats 3 and the support blocks 4 are all avoided from the processing surface of the workpiece. Two groups of clamping assemblies 5 are also provided on the base plate 2, and the two groups of clamping assemblies 5 are respectively close to the two clamp seats 3, and the clamping assemblies 5 can abut against the upper surface of the workpiece away from the corresponding clamp seats 3. The workpiece is thus positioned using the fixture seat 3, the support block 4 and the clamping assembly 5.

[0034] Reference Figure 2 and Figure 3 Specifically, the two clamp seats 3 are fixedly provided with a limit block 301, and the end of the workpiece can abut against the inner wall of the limit block 301. The limit block 301 near the small width end of the workpiece is threadedly connected with an end ball screw 302. The end ball screw 302 includes a shell 303 threadedly connected to the limit block 301, and the axial direction of the shell 303 is parallel to the plane where the base plate 2 is located, and the axial direction of the shell 303 is perpendicular to the axis of the mounting hole 101 at the small width end of the workpiece. The shell 303 is opened through one end of the workpiece, and the through end of the shell 303 is rollingly connected with a ball 304. A spring 305 is also provided inside the shell 303, and the telescopic axis of the spring 305 is parallel to the axial direction of the shell 303. One end of the spring 305 is fixedly connected to the inside of the shell 303, and the other end of the spring 305 abuts against the ball 304, and the ball 304 can be rollingly connected to the end of the spring 305. In the embodiment of the present application, the ball 304 can abut against the small width end of the workpiece, and the workpiece is forced to abut against the inner wall of the limit block 301 near the large width end under the action of the spring 305, thereby limiting the workpiece in the length direction of the workpiece.

[0035] Reference Figure 3 and Figure 4, a plurality of edge ball screws 401 are arranged on the support block 4 on the same side of the workpiece, and the plurality of edge ball screws 401 are arranged in sequence in a direction perpendicular to the bottom plate 2, and the structure of the edge ball screw 401 is consistent with the structure of the end ball screw 302. The axis direction of the edge ball screw 401 is parallel to the plane where the bottom plate 2 is located, and the axis of the edge ball screw 401 is perpendicular to the plane where the edge of the workpiece is located, so that the edge ball screw 401 can abut against the outer edge of the workpiece, and under the action of elastic force, the workpiece is forced to abut against the support block 4 on the other side of the workpiece. Thus, the workpiece is limited in the width direction of the workpiece.

[0036] Reference Figure 2 and Figure 5 The clamping assembly 5 includes a locking rod 501 threadedly connected to the bottom plate 2. The end of the locking rod 501 away from the bottom plate 2 is fixedly connected to an end block 502. The cross-sectional area of ​​the end block 502 is larger than the cross-sectional area of ​​the locking rod 501. In the embodiment of the present application, the locking rod 501 and the end block 502 are replaced by long screws. A plurality of clamping holes 503 are provided on the bottom plate 2. The clamping holes 503 can be arranged around the clamp seat 3. The locking rod 501 can be threadedly connected to any of the clamping holes 503. A clamping block 504 is slidably passed through the locking rod 501 and provided. At the same time, a washer 505 is also sleeved on the locking rod 501. The washer 505 is located between the end block 502 and the clamping block 504. The cross-sectional area of ​​the washer 505 is larger than the cross-sectional area of ​​the end block 502.

[0037] Reference Figure 5 A reference rod 506 is connected to the lower surface of one end of the locking rod 501. The length of the reference rod 506 is equal to the distance between the upper surface of the workpiece and the base plate 2. The axial direction of the reference rod 506 is parallel to the axial direction of the locking rod 501. One end of the reference rod 506 facing the clamping block 504 is set as a threaded section. The threaded section extends along the length direction of the reference rod 506, and the threaded section can be threadedly connected to the lower surface of the end of the clamping block 504.

[0038] Reference Figure 5 The clamping block 504 is bent toward the side wall of the workpiece, so that the clamping block 504 forms a plurality of protruding hook blocks 507 toward the side wall of the workpiece, and an angle is formed between the plurality of hook blocks 507 for the protruding part of the workpiece to abut. When the locking rod 501 is threadedly connected to the bottom plate 2, the end block 502 descends as the threaded connection depth of the locking rod 501 increases, driving the clamping block 504 and the reference rod 506 to descend together, until the reference rod 506 abuts against the bottom plate 2 and the end block 502 abuts against the washer 505. At this time, the end of the clamping block 504 away from the reference rod 506 abuts against the upper surface of the workpiece, and the inner wall of the angle of the hook block 507 can abut against the side wall of the fixing plate 102 facing the edge ball screw 401. Thus, the workpiece is limited in the thickness direction of the workpiece.

[0039] The implementation principle of a truck door hinge positioning tooling in an embodiment of the present application is as follows: when the truck door hinge 1 is subjected to hole processing, the two ends of the truck door hinge 1 are first placed in a space formed by two fixture seats 3 and a plurality of support blocks 4 in an arched upward convex form, and the end ball screw 302 can abut against the small width end of the truck door hinge 1, and make the large width end of the truck door hinge 1 abut against the inner wall of the other fixture seat 3, and at the same time, the edge ball screw 401 can abut against the edge of one side of the truck door hinge 1, and make the other edge of the truck door hinge 1 abut against the support block 4 on the other side, thereby realizing the limitation of the truck door hinge 1 in a direction parallel to the bottom plate 2. Then, the clamping block 504 is rotated to make the clamping block 504 located on the upper surface of the workpiece, and the locking rod 501 is threadedly connected to the bottom plate 2 and the depth of the threaded connection is gradually deepened until the reference rod 506 abuts against the bottom plate 2, and the end block 502 abuts against the washer 505, so that the clamping block 504 abuts against the workpiece, so as to limit the position of the truck door hinge 1 in a direction perpendicular to the bottom plate 2. Finally, the truck door hinge 1 is limited as a whole.

[0040] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A truck door hinge positioning tool, comprising a base plate (2), on which a clamping assembly (5) for fixing a workpiece is arranged, characterized in that: The base plate (2) is fixedly arranged on a numerical control turntable, and at least two clamp seats (3) are also fixedly arranged on the base plate (2). The same workpiece is placed on several clamp seats (3) at the same time, and the clamping assembly (5) abuts against a side of the workpiece away from the clamp seat (3).

2. The truck door hinge positioning tool according to claim 1, characterized in that: The two clamp seats (3) are respectively placed at the two ends of the workpiece, and the clamp seats (3) located at the two ends of the workpiece are fixedly provided with limit blocks (301), and the limit blocks (301) are all in contact with the ends of the workpiece; the bottom plate (2) is also provided with a plurality of support blocks (4), and the plurality of support blocks (4) are evenly distributed along the outer edge of the workpiece, and the plurality of support blocks (4) are all in contact with the outer edge of the workpiece.

3. The truck door hinge positioning tool according to claim 2, characterized in that: The clamping assembly (5) comprises a locking rod (501) threadedly connected to the base plate (2); an end block (502) is fixed to the end of the locking rod (501) away from the base plate (2); the cross-sectional area of ​​the end block (502) is larger than the cross-sectional area of ​​the locking rod (501); a clamping block (504) is slidably passed through and provided on the locking rod (501); a reference rod (506) is provided on the side wall of the clamping block (504) facing the base plate (2); the end of the reference rod (506) facing the base plate (2) can abut against the base plate (2); the clamping block (504) abuts against the workpiece when the reference rod (506) abuts against the base plate (2).

4. The truck door hinge positioning tool according to claim 3, characterized in that: A threaded section is provided on one side of the reference rod (506) facing the pressing block (504), the threaded section extends along the length direction of the reference rod (506), and the threaded section is threadedly connected to the pressing block (504).

5. The truck door hinge positioning tool according to claim 3, characterized in that: A washer (505) is sleeved on the locking rod (501), and the washer (505) is located between the end block (502) and the pressing block (504), and the cross-sectional area of ​​the washer (505) is greater than the cross-sectional area of ​​the end block (502).

6. The truck door hinge positioning tool according to claim 2, characterized in that: An end ball screw (302) is threadedly connected to a limit block (301) of one of the clamp seats (3) at both ends of the workpiece, and an abutting end of the end ball screw (302) abuts against the end of the workpiece.

7. The truck door hinge positioning tool according to claim 2, characterized in that: An edge ball screw (401) is threadedly connected to the support block (4) located on the same side of the workpiece, and the abutting end of the edge ball screw (401) abuts against the outer edge of the workpiece.

8. The truck door hinge positioning tool according to claim 3, characterized in that: The edge of the clamping block (504) facing the clamp seat (3) is provided with a hook block (507), and the inner wall of the hook block (507) can abut against the side wall of the ball screw (401) facing the edge of the fixing plate (102).

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