According to the present invention, a tube, a shaft and a ball, of which measurements are processed to be identical or different due to errors during processing and errors in designs, are respectively prepared in various kinds to perform a many-to-many matching. Between the ball selected based on the assembly slip load which is acquired by means of actual assembly, and a ball which is selected based on the value resulted from the linear analysis of the assembly slip load and a gap, acquired based on the actually gauged measurements, the ball with the overlapping measurements is selected as the standard ball, such that the actually measured value and the theoretically calculated value can be reflected in selecting the ball, thereby selecting the optimal ball. In addition, when the optimal standard ball does not exist, the ball with the measurements closest to the measurements of the ball in which the linearly analyzed inclination is reflected is selected as the approximation ball, before selecting the ball which is the most similar ball to the approximation ball among the balls using the assembly slip load and the gap-assembly slip load as an estimation ball. Therefore, the dimensional deviation of the approximation ball and the estimation ball may be reflected, thereby selecting the optimal ball which is closest to the measurements which do not match the actual assembly and calculation but reflect the same. Furthermore, when the measurements of the ball selected as the optimal ball do not exist, the ball with the measurements a grade larger or smaller than said measurements can be selected and assembled. To this end, the present invention comprises: a first step; a second step; a third step; a fourth step; a fifth step; a sixth step; a seventh step; an eighth step; a ninth step; a tenth step; and an eleventh step.
가공 상의 오차나 설계 오차 등으로 치수가 같거나 다르게 가공된 튜브와 샤프트 그리고 볼을 각각 여러 종류로 준비한 다음 다대다 대응하되, 실제로 조립하여 얻은 조립 미끄럼 하중을 바탕으로 선택된 볼과, 실제로 측정된 치수를 바탕으로 얻은 갭과 조립 미끄럼 하중을 선형 해석한 값을 바탕으로 선택된 볼 중 서로 중첩하는 치수의 볼을 규격 볼로 선정함으로써, 실제로 측정된 값과 이론상으로 계산된 값을 볼 선택에 반영할 수 있어 최적의 볼을 선정할 수 있다. 또한, 최적의 규격 볼이 없을 때는 선형 해석한 기울기를 반영한 볼 치수와 가장 근접한 치수를 가진 볼을 근접 볼로 선정한 다음, 조립 미끄럼 하중과 갭-조립 미끄럼 하중을 이용한 볼 중에서 이 근접 볼과 가장 유사한 볼을 예측 볼을 선정하되, 근접 볼과 예측 볼의 치수 편차를 반영함으로써, 실제 조립과 계산과 일치하지는 않으나 이를 반영한 치수에 가장 근접한 최적의 볼을 선택한다. 그리고 최적의 볼로 선택된 볼의 치수가 없을 때는 이 치수보다 한 치수 크거나 작은 치수의 볼을 선택하여 조립할 수 있다.
METHOD OF SELECTING BALL OF INTERMEDIATE SHAFT FOR VEHICLES
자동차용 중간축의 볼 선정 방법
2023-01-18
Patent
Electronic Resource
Korean
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