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
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[0035] Example 1:
[0036] Such as Figure 2 to Figure 3 As shown, a driving wheel hub bearing unit spin riveting pressure measurement system, including outer ring 1, outer row of steel balls 2, inner row of steel balls 3, flange 5, outer cage 6, inner cage 7, bolts 11 and Strain gauge 9, the drive wheel 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. The strain ring 4a is in clearance fit with the flange 5 journal, and the fit gap is 0.040mm, the use of this fit gap can prevent the circumferential strain effect of the strain ring 4a and the flange 5 journal due to the interference fit, and also avoid the reduction of the axial guiding effect due to the excessive gap; the spin riveting ring 4b Interference fit with flange 5; small end face of strain ring 4a and small end face of riveting ring 4b are attached to each other; the number of strain gauges 9 is 4, and the
Example Embodiment
[0049] Example 2:
[0050] As in Embodiment 1, the difference is only that there is one strain gauge 9, which is pasted on the outer diameter of the strain ring 4a. The axial positioning is consistent with that in Embodiment 1, and the circumferential positioning is randomly arranged in the 360-degree circumferential direction.
[0051] A method for measuring the spin riveting pressure of a drive wheel hub bearing unit includes the following steps:
[0052] A. Part 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 flange 5 journal are in clearance fit, and the fit gap is 0.042mm; The riveting ring 4b and the flange plate 5 maintain a 0.024mm interference fit; a strain gauge 9 is pasted on the outer diameter of the strain ring 4a;
[0053] B. The parts are matched. After the outer ring 1, the outer row of steel balls 2, the inner row of steel balls 3, the
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