Three-point measurement method for negative clearance of third-generation hub bearing unit
A three-point measurement and hub bearing technology, applied in the field of bearings, can solve problems such as the difficulty of directly measuring the negative clearance value of the third-generation hub bearing unit, and achieve the effects of fast measurement speed, accurate measurement results and high efficiency
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Embodiment 1
[0018] Such as figure 1 , figure 2 As shown, after the components of the above-mentioned third-generation hub bearing unit are prepared, the negative clearance measurement method includes the following steps:
[0019] 1) First assemble the first inner ring 1, the second inner ring 2, the outer ring 3, the steel ball 4 and the cage together.
[0020] 2) Next, put the small end of the first inner ring 1 downward on the shaft at the upper end of the second inner ring 2, press the second inner ring 2 to fix it, and apply a downward force on the large end of the first inner ring 1. The pressure F1 is preloaded so that the small end surface of the first inner ring 1 and the shoulder of the second inner ring 2 maintain a distance a, and the value of a is 0.1-0.15mm.
[0021] 3) Sequentially apply force to the upper and lower ends of the flange of the outer ring 3, so that the outer ring 3 can move up and down along the axial direction, install a displacement measuring instrument o...
Embodiment 2
[0026] Such as figure 1 , figure 2 As shown, after the components of the above-mentioned third-generation hub bearing unit are prepared, the negative clearance measurement method includes the following steps:
[0027] 1) First assemble the first inner ring 1, the second inner ring 2, the outer ring 3, the steel ball 4 and the cage together.
[0028] 2) Next, put the small end of the first inner ring 1 downward on the shaft at the upper end of the second inner ring 2, press the second inner ring 2 to fix it, and apply a downward force on the large end of the first inner ring 1. The pressure F1 is preloaded so that the small end surface of the first inner ring 1 and the shoulder of the second inner ring 2 maintain a distance a, and the value of a is 0.1-0.15mm.
[0029] 3) Sequentially apply forces at the upper and lower ends of the flange of the outer ring 3, so that the outer ring 3 can move up and down along the axial direction, and three displacement measuring instruments...
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