Hub machine machining positioning tool

Abstract

The utility model relates to the technical field of positioning tools, in particular to a hub machining positioning tool which comprises a supporting column and a limiting seat, a limiting groove is formed in the first end of the supporting column along the axis, the limiting seat is fixedly connected with a limiting block matched with the limiting groove, and fixing holes are formed in the limiting seat and the supporting column. When the limiting blocks are located in the limiting grooves, the fixing holes in the limiting seats and the fixing holes in the supporting columns are aligned and fixed through the fixing pieces, compared with the prior art, the technical scheme has the advantages that the using number of bolts is greatly reduced, meanwhile, it is guaranteed that the hub is fixed in the axial direction and the circumferential direction, and the stability of the hub on the tool is guaranteed; and the positioning machining efficiency of the hub is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning frock technical field especially relates to a wheel hub machining positioning frock. BACKGROUND

[0002] The wheel hub is the cylindrical metal part in the automobile tire for supporting the tire with the shaft as the center, and in common parlance, it is the part of the wheel center installing the axle, and it is the important part connecting the brake drum (brake disc), wheel disc and half shaft, and the positioning device needs to be used to fix the wheel hub machine during the wheel hub machining.

[0003] In order to realize the quick positioning of the wheel hub, the existing positioning frock is mostly improved in the position adjustment aspect of the wheel hub, the wheel hub can move in the left and right, front and back and up and down directions on the positioning frock through the installation of the three-axis linkage mechanism, and the positioning frock improves the positioning speed of the wheel hub to a certain extent, in order to ensure the stability of the wheel hub on the frock, the wheel hub positioning frock is mostly fixed by using bolts, and the several bolts are still troublesome and laborious during disassembly and assembly, so that the disassembly and assembly of the wheel hub on the positioning frock are relatively cumbersome, and the positioning machining efficiency of the wheel hub is affected.

[0004] Therefore, it is necessary to provide a wheel hub machining positioning frock to improve the positioning machining efficiency of the wheel hub. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the problems that the existing positioning frock is relatively cumbersome when disassembling and assembling the wheel hub, leading to the low positioning machining efficiency of the wheel hub, and provides a wheel hub machining positioning frock.

[0006] The technical scheme of the utility model is:

[0007] A wheel hub machining positioning frock, including support column and limit seat, the first end of support column is provided with a limit slot along the axis, the limit seat is fixedly connected with the limit block matched with the limit slot, the limit seat and support column are provided with fixing holes, when the limit block is located in the limit slot, the fixing hole on the limit seat is aligned with the fixing hole on the support column and is fixed through the fixing piece;

[0008] The limit seat is provided with a rotating slot, a rotating rod is arranged in the rotating slot, the middle part of the rotating rod is rotatably connected with the rotating slot, a push hole is arranged in the rotating slot, the first end of the rotating rod is provided with an anti-skid pressure head, the second end of the rotating rod is located at the top of the push hole, the support column is provided with a push rod device, the push rod of the push rod device passes through the push hole and pushes the rotating rod to rotate.

[0009] Further, the first end of the rotating rod is provided with a positioning protruding head matched with the bolt hole of the wheel hub, and the positioning protruding head is buckled into the bolt hole of the wheel hub when the first end of the rotating rod is close to the wheel hub.

[0010] Further, the rotating rod is telescopic.

[0011] Further, a plurality of rotating grooves are formed on the limiting seat, and the rotating grooves are annularly distributed on the limiting seat, and the rotating rods correspond to the rotating grooves one by one.

[0012] Further, the number of the rotating grooves is five.

[0013] Further, a three-axis linkage mechanism is installed at the second end of the supporting column, and the three-axis linkage mechanism drives the supporting column to move in three directions along the X, Y and Z axes.

[0014] The wheel hub machining positioning tool of the utility model, the wheel hub is placed at the first end of the supporting column, because there is an opening at the axis of the wheel hub, after the wheel hub is aligned with the supporting column, the limiting seat is pressed above the wheel hub, the wheel hub is located between the limiting seat and the supporting column, the limiting block of the limiting seat can be inserted into the limiting groove through the hole at the axis of the wheel hub, the circumferential fixing of the limiting seat on the supporting column is realized, the limiting seat is prevented from rotating relative to the supporting column, and the fixed hole and the fixing piece can ensure the axial fixing of the limiting seat on the supporting column, so that the limiting block is prevented from separating from the limiting groove due to stress; then the rotating rod on the limiting seat can rotate in the rotating groove, under the driving of the push rod device, the push rod passes through the push hole and pushes the second end of the rotating rod to move, so that the first end of the rotating rod moves reversely, the rotation of the rotating rod is realized, when the first end of the rotating rod approaches the end face of the wheel hub until abutting against the wheel hub, the anti-skid pressing head on the rotating rod will contact the end face of the wheel hub and generate extrusion force on the wheel hub, the friction force of the anti-skid pressing head on the wheel hub is increased by the extrusion force, so that the wheel hub is prevented from rotating on the positioning tool due to stress, the circumferential fixing of the wheel hub on the positioning tool is realized, compared with the traditional technology, the number of bolts is greatly reduced, meanwhile, the axial and circumferential fixing of the wheel hub is ensured, the stability of the wheel hub on the tool is ensured, and the positioning machining efficiency of the wheel hub is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is the left view of the utility model;

[0017] Figure 3 It is the top view of the utility model Figure 1 ;

[0018] Figure 4 It is the sectional view of the utility model Figure 3 at A-A;

[0019] Figure 5 It is the local enlarged view of the utility model Figure 4 at B;

[0020] Figure 6This is a reference diagram showing the usage state of this utility model;

[0021] Figure 7 Top view of this utility model Figure 2 .

[0022] Reference numerals in the attached drawings: 1. Support column; 2. Limiting seat; 3. Limiting groove; 4. Limiting block; 5. Fixing hole; 6. Fixing component; 7. Rotating groove; 8. Rotating rod; 9. Push hole; 10. Anti-slip pressure head; 11. Push rod device; 12. Positioning protrusion; 13. Three-axis linkage mechanism; 14. Hub. Detailed Implementation

[0023] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0024] Example 1:

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a positioning fixture for wheel hub machining, including a support column 1 and a limiting seat 2. A limiting groove 3 is formed at the first end of the support column 1 along its axis. A limiting block 4 matching the limiting groove 3 is screwed to the limiting seat 2. Both the limiting seat 2 and the support column 1 have fixing holes 5. When the limiting block 4 is located within the limiting groove 3, the fixing holes 5 on the limiting seat 2 and the fixing holes 5 on the support column 1 are aligned and fixed by a fixing member 6. Preferably, the limiting holes are screw holes, and the fixing member 6 is preferably a screw or bolt. Figure 4 and Figure 5 As shown, there is a fixing hole 5 on both the limiting seat 2 and the support seat. The two fixing holes 5 are connected and fixed by a fixing member 6. The fixing hole 5 of the limiting seat 2 coincides with the axis of the limiting seat 2, and the fixing hole 5 of the support column 1 coincides with the axis of the support column 1. The limiting groove 3 is provided around the fixing hole 5 on the support column 1, and the limiting block 4 is located around the fixing hole 5 on the limiting seat 2. Since only one fixing member 6, i.e., one screw, is used to fix the limiting seat 2 and the support column 1 in the axial direction, disassembly is very convenient, which greatly improves the efficiency of workpiece assembly and disassembly.

[0026] like Figure 3As shown, the limiting seat 2 is provided with a rotating groove 7, and the rotating groove 7 is provided with a rotating rod 8. The middle part of the rotating rod 8 is rotatably connected with the rotating groove 7 through a pin shaft. The rotating groove 7 is provided with a push hole 9. The first end of the rotating rod 8 is screw-fixed with an anti-skid pressure head 10. The second end of the rotating rod 8 is located at the top of the push hole 9. The supporting column 1 is provided with a push rod device 11. The push rod of the push rod device 11 penetrates through the push hole 9 and pushes the rotating rod 8 to rotate. Preferably, the push rod device 11 can be a hydraulic cylinder, an air cylinder or an electric cylinder. Preferably, a plurality of rotating grooves 7 are provided on the limiting seat 2. The rotating grooves 7 are evenly distributed in a ring shape on the limiting seat 2. The rotating grooves 7 are located at the outer edge of the limiting seat 2. The rotating rod 8 corresponds to the rotating groove 7. Preferably, as shown in the figure, Figure 7 When there are five bolt holes on the hub, the number of rotating grooves 7 is five, as shown in the figure, Figure 3 When there are three bolt holes on the hub, the number of rotating grooves 7 is three. In summary, it is only necessary to ensure that the number of rotating grooves 7 matches the number of bolt holes on the hub. Preferably, the first end of the rotating rod 8 is provided with a positioning protrusion 12 matched with the bolt hole of the hub 14. When the first end of the rotating rod 8 is close to the hub 14, the positioning protrusion 12 is buckled into the bolt hole of the hub 14. Since the hub 14 is usually provided with five bolt holes for fixing the automobile, the number of positioning protrusions 12 cannot exceed the number of bolt holes on the hub 14. Therefore, whether the rotating groove 7 or the rotating rod 8 is preferably five. The positioning protrusion 12 on each rotating rod 8 is buckled into a bolt hole of the hub 14, thereby further improving the fixing effect of the positioning tool on the hub 14 and improving the stability of the hub 14 on the positioning tool.

[0027] Preferably, the rotating rod 8 is telescopic. The telescopic rotating rod 8 can adjust the length of the rotating rod 8 according to the size of different hubs 14, so that the position of the positioning protrusion 12 matches the position of the bolt hole on the hub 14, and at the same time, the effective contact between the anti-skid pressure head 10 and the hub 14 can be ensured, thereby ensuring the fixing effect on the hub 14. The material of the anti-skid pressure head 10 can be rubber or nylon, which can have the effects of pressing and fixing and anti-skid.

[0028] Preferably, the second end of the supporting column 1 is provided with a three-axis linkage mechanism 13. The three-axis linkage mechanism 13 drives the supporting column 1 to move along the X, Y and Z axes. The three-axis linkage mechanism 13 is a mature and common technology in the field of machine tool processing, which is usually composed of a motor and a screw transmission mechanism. Through the three-axis linkage mechanism 13, the position of the supporting column 1 can be flexibly adjusted, thereby meeting the adjustment of the position of the positioning tool on the hub 14. Since the three-axis linkage mechanism 13 belongs to the prior art, those skilled in the art can install it according to the actual situation, and this part will not be described here.

[0029] In use, as shown in the figure, Figure 6As shown, the hub 14 is placed at the first end of the support column 1, and the hub 14 is aligned with the support column 1 due to the opening at the axis of the hub 14, then the limiting seat 2 is installed from top to bottom, the limiting seat 2 is pressed above the hub 14, the hub 14 is located between the limiting seat 2 and the support column 1, the limiting block 4 of the limiting seat 2 can be inserted into the limiting groove 3 through the hole at the axis of the hub 14, the circumferential fixing of the limiting seat 2 on the support column 1 is realized, the limiting seat 2 is prevented from rotating relative to the support column 1, the wrench is used to fix the fixing piece 6 with the fixing hole 5, the axial fixing of the limiting seat 2 on the support column 1 is ensured, and the limiting block 4 is prevented from being separated from the limiting groove 3 due to stress; then the rotating rod 8 on the limiting seat 2 can rotate in the rotating groove 7, the push rod passes through the push hole 9 and pushes the second end of the rotating rod 8 to move under the driving of the push rod device 11, so that the first end of the rotating rod 8 moves reversely, the rotating rod 8 is rotated, when the first end of the rotating rod 8 approaches the end face of the hub 14 until the hub 14 is attached, the anti-skid pressure head 10 on the rotating rod 8 contacts the end face of the hub 14 and generates extrusion force on the hub 14, the friction force of the anti-skid pressure head 10 on the hub 14 is increased by the extrusion force, so that the hub 14 on the positioning tooling is prevented from rotating due to stress, and the positioning convex head 12 can be buckled into the bolt hole of the hub 14, the hub 14 is further limited in the circumferential direction, and the circumferential fixing of the hub 14 on the positioning tooling is realized, compared with the traditional technology, the number of bolts used is greatly reduced, the axial and circumferential fixing of the hub 14 is ensured, the stability of the hub 14 on the tooling is ensured, and the positioning machining efficiency of the hub 14 is improved.

[0030] In conclusion, only the preferred embodiments of the present application are described above, which do not limit the scope of the present application. Any equivalent changes and modifications made according to the content of the patent application of the present application shall belong to the technical scope of the present application.

Claims

1. A wheel hub machining positioning fixture, characterized by: Including support column (1) and limit seat (2), the first end of support column (1) is provided with a limiting slot (3) along the axis, the limit seat (2) is fixedly connected with a limiting block (4) matched with the limiting slot (3), the limit seat (2) and the support column (1) are both provided with a fixing hole (5), when the limiting block (4) is located in the limiting slot (3), the fixing hole (5) on the limit seat (2) is aligned with the fixing hole (5) on the support column (1) and is fixed through a fixing piece (6); The limit seat (2) is provided with a rotating slot (7), the rotating slot (7) is provided with a rotating rod (8), the middle part of the rotating rod (8) is rotatably connected with the rotating slot (7), the rotating slot (7) is provided with a push hole (9), the first end of the rotating rod (8) is provided with an anti-skid pressure head (10), the second end of the rotating rod (8) is located at the top of the push hole (9), the support column (1) is provided with a push rod device (11), the push rod of the push rod device (11) passes through the push hole (9) and pushes the rotating rod (8) to rotate.

2. The wheel hub machining positioning fixture of claim 1, wherein: The first end of the rotating rod (8) is provided with a positioning convex head (12) matched with the bolt hole of the wheel hub (14), when the first end of the rotating rod (8) is close to the wheel hub (14), the positioning convex head (12) is buckled into the bolt hole of the wheel hub (14).

3. The wheel hub machining positioning fixture of claim 2, wherein: The rotating rod (8) is telescopic.

4. The wheel hub machining positioning fixture of claim 1, wherein: The limit seat (2) is provided with a plurality of rotating slots (7), the rotating slots (7) are annularly distributed on the limit seat (2), and the rotating rod (8) corresponds to the rotating slot (7) one by one.

5. The wheel hub machining positioning fixture of claim 4, wherein: The number of the rotating slots (7) is five.

6. The wheel hub machining positioning fixture of claim 1, wherein: The second end of the support column (1) is provided with a three-axis linkage mechanism (13), the three-axis linkage mechanism (13) drives the support column (1) to move in three directions along the X, Y and Z axes.

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