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Drive hub bearing unit spin riveting pressure measurement system and measurement method

A wheel hub bearing and measurement method technology, applied in force/torque/work measuring instrument, measuring force, measuring device, etc., can solve problems such as uncertain axial preload effect, fracture of flange shaft, affecting driving safety, etc. Achieve the effects of reasonable structural design, guaranteed safety, and simple measurement methods

Pending Publication Date: 2017-10-03
ZHEJIANG WANXIANG PRECISION IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current wheel hub bearing unit with spin riveting structure has no means of monitoring the axial pressure caused by the spin riveting process, and only detects the axial preload of the raceway before and after the spin riveting. This test only reflects the preload of the raceway and cannot obtain the hub The axial pressure value remaining on the hub bearing unit after the bearing unit spin riveting process makes the axial preload effect uncertain when the bearing is installed
Due to the lack of monitoring means, it is easy to cause the inner ring to loosen and slip due to insufficient preload in actual use, and eventually lead to the fracture of the flange shaft, affecting driving safety

Method used

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  • Drive hub bearing unit spin riveting pressure measurement system and measurement method
  • Drive hub bearing unit spin riveting pressure measurement system and measurement method
  • Drive hub bearing unit spin riveting pressure measurement system and measurement method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as Figure 2 to Figure 3 As shown in the figure, a driving hub bearing unit spin riveting pressure measurement system includes an outer ring 1, an outer row of steel balls 2, an inner row of steel balls 3, a flange 5, an outer cage 6, an inner cage 7, bolts 11 and Strain gauge 9, the drive hub bearing unit is provided with an inner ring 4; part of the structure of the inner ring 4 is cut and polished to form a strain ring 4a and a spin riveting ring 4b, and the strain ring 4a is matched with the journal of the flange 5 with a clearance of 0.040mm, the use of this fit gap can prevent the circumferential strain effect caused by the interference fit between the strain ring 4a and the flange 5 journal, and also avoid the reduction of the axial guiding effect due to the excessive gap; the spin riveting ring 4b Interference fit with the flange plate 5; the small end surface of the strain ring 4a and the small end surface of the spin riveting ring 4b fit each other; the n...

Embodiment 2

[0050] As in embodiment 1, the only difference is that there is only one strain gauge 9, which is pasted on the outer diameter of the strain ring 4a, the axial positioning is consistent with that of embodiment 1, and the circumferential positioning is randomly arranged in the 360-degree circumferential direction.

[0051] A method for measuring the rivet pressure of a drive hub bearing unit, comprising the following steps:

[0052] A. Parts preparation, part of the structure of the inner ring 4 of the drive hub bearing unit is cut and polished to form a strain ring 4a and a spin riveting ring 4b; the strain ring 4a and the journal of the flange 5 are clearance fit, and the fit clearance is 0.042mm; An interference fit of 0.024mm is maintained between the riveting ring 4b and the flange 5; a strain gauge 9 is pasted on the outer diameter of the strain ring 4a;

[0053] B. Parts matching, after assembling the outer ring 1, the outer row of steel balls 2, the inner row of steel b...

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PUM

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Abstract

The invention belongs to the field of production of an automobile hub bearing unit and especially relates to a drive hub bearing unit spin riveting pressure measurement system and measurement method. The measurement system comprises an outer ring, an external steel ball, an internal steel ball, a flange plate, an external holder, an internal holder, a bolt and foil gauges. The system is reasonable in structure design and simple in measurement method, and can accurately measure axial pressure remaining on the hub bearing unit after the hub bearing unit finishes spin riveting process to determine axial pre-tightening effect under a bearing loading state, thereby preventing the problem of flange shaft rupture due to inner ring loosening and skid, and ensuring driving safety. The measurement can check reasonability of structure design of a spin riveting structure and select reasonable process parameters.

Description

technical field [0001] The invention belongs to the field of automobile hub bearing unit production, and in particular relates to a driving hub bearing unit spin riveting pressure measuring system and a measuring method thereof. Background technique [0002] The current wheel hub bearing unit with spin riveting structure has no means of monitoring the axial pressure caused by the spin riveting process, and only detects the axial preload of the raceway before and after the spin riveting. This test only reflects the preload of the raceway and cannot obtain the hub The axial pressure value remaining on the hub bearing unit after the bearing unit spin riveting process makes the axial preload effect uncertain when the bearing is installed. Due to the lack of monitoring means, it is easy to cause the inner ring to loosen and slip due to insufficient preload in actual use, and eventually lead to the fracture of the flange shaft, affecting driving safety. Contents of the invention...

Claims

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Application Information

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IPC IPC(8): G01L5/00G01L1/22
CPCG01L1/2262G01L5/0076
Inventor 黄德杰周旭姜金东
Owner ZHEJIANG WANXIANG PRECISION IND
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