V-V ボールガイドの負荷分布と精度に関する研究

概要

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The load distribution formula in the V-V ball guide in accordance with the reciprocating table movement of surface grinding machine is derived. The guiding accuracy of the table, the fluctuation of the load distribution etc. are calculated. The results are as follows. (1) Almost zero flatness of the guiding accuracy is obtained by means of 10μm concave parabolic shape of the saddle guide ways and the load distribution becomes also parabolic. (2) Even if the pitch error between the table and the saddle V-grooves is 10μm, the decrease of the guiding accuracy is only 0.8μm. (3) The higher guiding accuracy is obtained by means of the decrease of the weight over the ball guide. (4) The use of regular class balls induces the decrease of the guiding accuracy due to the mutual diameter differences, but if the descending arrangement towards the center of the retainers in each row in relation to the balls size are carried out, then the guiding accuracy is improved rather than the one of the use of precision class balls.
公益社団法人精密工学会の論文
1988-07-05