センタとセンタ穴のアライメント誤差が加工物の回転精度へ及ぼす影響

概要

論文の詳細を見る
When machining a workpiece supported between two centers, the centers and the center holes act as rotational guideways. Accurate motion of the workpiece is guaranteed only under the condition that both of the centers and the holes are aligned coaxially. Some alignment errors, however, may be induced by machining errors of the holes and mounting errors of the centers and may deteriorate the rotation accuracy of the workpiece. In this report, the kinematic behavior of the workpiece is investigated in the case where true cone-shaped centers and holes which are out of alignment make contact near the edge of the holes. The obtained results are as follows : (1) The alignment error between centers alone does not affect the rotation accuracy of the workpiece. (2) The alignment error between center holes causes a sinusoidal radial displacement of one cycle per revolution of the workpiece. (3) The alignment error between centers and that between holes jointly cause sinusoidal radial and axial displacements of one cycle per revolution of the workpiece. (4) The amplitudes of these sinusoidal displacements increase in proportion to the center hole diameter in the case of a fixed alignment error.
公益社団法人精密工学会の論文
1984-03-05