An asymmetric wheel hub outer diameter measuring device

Abstract

The utility model relates to bearing production technical field, concretely is a kind of asymmetric wheel hub outer circle diameter measuring device, including base and the measuring mechanism being established on base, measuring mechanism includes the outside diameter micrometer being established on base, positioning seat is horizontally slidably established on base and the drive assembly being established on base;Drive assembly is drivingly connected with positioning seat, drive assembly drives positioning seat to move;The utility model is used to measure wheel hub stop mouth size, by adjusting screw rod rotation drives lower pressure block to descend, drives multiple adjusting block to diffuse positioning wheel hub position outward, then by rotating screw rod drives one of wheel hub stop mouth to move to outside diameter micrometer measuring anvil, the arc block on the outside diameter micrometer micrometer screw is adjusted and the two stop mouth of opposite fit, to measure wheel hub stop mouth size;By setting adjusting block to prevent wheel hub misplacement, influence measurement result, by setting arc block to measure asymmetric structure wheel hub stop mouth size, the device is convenient to operate, improves measurement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing manufacturing technology, specifically to an asymmetric hub outer diameter measuring device. Background Technology

[0002] In the automotive industry, brake drums are key components of the vehicle braking system, which are crucial to vehicle driving safety. During the design, assembly, and use of wheel hub units, the installation stop dimensions of the brake drum serve as positioning and installation dimensions, playing a decisive role in the lifespan of the wheel hub unit and the safe driving of the vehicle. Therefore, the installation stop dimensions of the brake drum are extremely critical.

[0003] During the design phase, to ensure the compatibility of the brake drum and wheel hub installation, the wheel hub unit and brake drum are generally fitted with a small clearance. The wheel hub stop dimensions require high precision. The tolerance for the brake drum installation dimensions is generally 0.100mm. The stop is generally divided into symmetrical and asymmetrical structures according to the circumferential direction. The symmetrical structure can be directly measured with a micrometer, while the asymmetrical structure stop is evenly distributed in 5 equal parts on the circumference and cannot be directly measured with an outside micrometer. Currently, go and no-go gauges are generally used for inspection, but this can only qualitatively inspect the range and cannot measure accurately. If a coordinate measuring machine is used, the measurement accuracy can fully meet the requirements, but the efficiency of coordinate measuring machine is low and it is only suitable for small-batch sampling inspection in specific environments, which cannot meet the needs of large-scale production manufacturing in the production and processing site. Utility Model Content

[0004] The purpose of this invention is to provide an asymmetric hub outer diameter measuring device to solve the problems existing in the prior art mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for measuring the outer diameter of an asymmetric wheel hub includes a base and a measuring mechanism mounted on the base. The measuring mechanism includes an outer micrometer mounted on the base, a positioning seat horizontally slidable on the base, and a driving assembly mounted on the base. The driving assembly is pultrusively connected to the positioning seat, and the driving assembly drives the positioning seat to move. The driving assembly includes a lead screw rotatably connected to the base and a rotating handle located on one side of the base and connected to one end of the lead screw. The positioning seat includes a moving block slidably connected to the base, an adjusting cylinder mounted on the moving block, and an adjusting screw threadedly connected to the adjusting cylinder. The moving block is threadedly engaged with the lead screw. Multiple grooves are equidistantly spaced along the circumference on the side wall of the adjusting cylinder. The adjusting block is slidably mounted in the grooves. One end of the adjusting block inside the adjusting cylinder is inclined. A frustum-shaped pressing block is provided on one end of the adjusting screw inside the adjusting cylinder. An arc-shaped block is connected to the end of the micrometer's micrometer screw.

[0007] Furthermore, a spring is provided between one end of the adjusting block located inside the adjusting cylinder and the inner wall of the adjusting cylinder, and the two ends of the spring are respectively connected to the adjusting block and the adjusting cylinder.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] This invention is used to measure the dimensions of a wheel hub stop. By rotating an adjusting screw, a lower pressure block moves downward, which in turn causes multiple adjusting blocks to spread outward and position the wheel hub. Then, by rotating a lead screw, one of the wheel hub stops moves to the anvil of an outside micrometer. An arc-shaped block on the micrometer's adjusting screw engages with the two opposite stops to measure the wheel hub stop dimensions. This device uses adjusting blocks to prevent wheel hub misalignment from affecting the measurement results, and arc-shaped blocks to facilitate the measurement of stop dimensions in asymmetrical wheel hubs. Furthermore, the device is easy to operate, thus improving measurement efficiency. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the present invention;

[0011] Figure 2 This is a partial structural diagram of the present utility model;

[0012] Figure 3 This is a structural diagram of the positioning seat of this utility model;

[0013] Figure 4 This is a structural diagram of the positioning seat of this utility model.

[0014] In the diagram: 1. Base; 2. Measuring mechanism; 3. Outside micrometer; 4. Positioning seat; 5. Drive assembly; 6. Lead screw; 7. Rotary handle; 8. Moving block; 9. Adjusting cylinder; 10. Adjusting screw; 11. Adjusting block; 12. Pressing block; 13. Spring; 14. Arc block. Detailed Implementation

[0015] Please see Figures 1-4 An asymmetric hub outer diameter measuring device comprises a base 1 and a measuring mechanism 2 mounted on the base 1. The measuring mechanism 2 includes an outer micrometer 3 mounted on the base 1, a positioning seat 4 horizontally slidably mounted on the base 1, and a drive assembly 5 mounted on the base 1. When measuring the hub stop size, the hub is first placed on the positioning seat 4 for positioning and fixing. Then, the drive assembly 5, which is connected to the positioning seat 4, drives the positioning seat 4 to move until two adjacent hub stops come into contact with the arc-shaped block 14 mounted on the micrometer screw end of the outer micrometer 3. The size is then measured by rotating the micrometer screw end of the outer micrometer 3.

[0016] The drive assembly 5 for moving the positioning seat 4 consists of a lead screw 6 rotatably connected to the base 1 and a rotating handle 7 located on one side of the base 1 and connected to one end of the lead screw 6; the positioning seat 4 for positioning and fixing the hub position consists of a moving block 8 slidably connected to the base 1, an adjusting cylinder 9 provided on the moving block 8, and an adjusting screw 10 threadedly connected to the adjusting cylinder 9; the moving block 8 is threadedly engaged with the lead screw 6, and multiple sliding grooves are equally spaced along the circumference of the adjusting cylinder 9 on the side wall of the adjusting cylinder 9, and the adjusting block 11 is slidably arranged in the sliding grooves, with one end of the adjusting block 11 inside the adjusting cylinder 9 being inclined, and the adjusting screw 10... A frustum-shaped pressing block 12 is provided at one end of the adjusting cylinder 9. When the hub needs to be positioned and fixed, the adjusting cylinder 9 is first placed at the center hole of the hub, and then the adjusting screw 10 is rotated. The adjusting screw 10 drives the pressing block 12 to move down, which in turn drives multiple adjusting blocks 11 to spread outward from the adjusting cylinder 9, so that multiple adjusting blocks 11 abut against the center hole of the hub, thereby fixing the position of the hub on the base 1. Abutment blocks can be connected to the ends of the adjusting blocks 11 to increase the contact area and improve the fixing effect. Then, the rotating handle 7 is rotated to drive the lead screw 6 to rotate, which in turn drives the moving block 8 that is threaded to it to move. After the measurement is completed, the adjusting screw 10 is rotated in the opposite direction. A spring 13 is provided between the end of the adjusting block 11 located inside the adjusting cylinder 9 and the inner wall of the adjusting cylinder 9. The two ends of the spring 13 are connected to the adjusting block 11 and the adjusting cylinder 9 respectively. Therefore, when the adjusting screw 10 is rotated in the opposite direction, the adjusting block 11 is reset under the action of the spring 13 for subsequent use.

[0017] The working principle of this utility model is as follows: When measuring the size of the wheel hub stop, first place the wheel hub on the base 1, ensuring that the positioning seat 4 is located inside the center hole of the wheel hub. Then, rotate the adjusting screw 10, which drives the lower pressure block 12 to move downward, thereby causing multiple adjusting blocks 11 to spread outward from the adjusting cylinder 9. This causes the multiple adjusting blocks 11 to press against the inner wall of the center hole of the wheel hub, thus fixing the position of the wheel hub on the base 1. After the position of the wheel hub is fixed, rotate the handle 7 to drive the lead screw 6 to rotate, thereby moving the moving block 8 (which can...). Based on actual production needs, the rotary handle 7 is replaced with a motor as the power source to drive the lead screw, thereby moving the hub until one of the stops on the hub abuts against the anvil of the outside micrometer 3. Then, the micrometer screw end of the outside micrometer 3 is moved, causing the arc block 14 to move to the two stops opposite to one of the stops, so that the arc block 14 is completely in contact with the two stops (the arc block 14 is the standard hub size). The reading of the outside micrometer 3 is observed at this time, thereby obtaining the measured hub stop size.

Claims

1. An asymmetric hub outer diameter measuring device, comprising a base (1) and a measuring mechanism (2) disposed on the base (1), characterized in that, The measuring mechanism (2) includes an outside micrometer (3) mounted on a base (1), a positioning seat (4) horizontally slidably mounted on the base (1), and a drive assembly (5) mounted on the base (1); the drive assembly (5) is connected to the positioning seat (4) in a transmission manner, and the drive assembly (5) drives the positioning seat (4) to move; the drive assembly (5) includes a lead screw (6) rotatably connected to the base (1) and a rotating handle (7) located on one side of the base (1) and connected to one end of the lead screw (6); the positioning seat (4) includes a moving block slidably connected to the base (1). 8) An adjusting cylinder (9) is provided on the moving block (8) and an adjusting screw (10) is threadedly connected to the adjusting cylinder (9); the moving block (8) is threadedly engaged with the lead screw (6), and multiple sliding grooves are provided at equal intervals along the circumference on the side wall of the adjusting cylinder (9). An adjusting block (11) is slidably provided in the sliding groove. One end of the adjusting block (11) located inside the adjusting cylinder (9) is inclined. A frustum-shaped pressing block (12) is provided on one end of the adjusting screw (10) located inside the adjusting cylinder (9); an arc-shaped block (14) is connected to the end of the micrometer (3) micrometer screw.

2. The measuring device as described in claim 1, characterized in that, A spring (13) is provided between one end of the adjusting block (11) inside the adjusting cylinder (9) and the inner wall of the adjusting cylinder (9). The two ends of the spring (13) are respectively connected to the adjusting block (11) and the adjusting cylinder (9).

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