エンドミル加工における加工誤差のばらつき

概要

論文の詳細を見る
Machining error distributions in end milling operation have been analyzed quantitatively based on statistical treatment. It is assumed that the machining error distribution consists of two normal distributions which have different standard deviations. Experimental results show that, among 5 machining centers and 3 tool holders experimented, one of the standard deviations remains almost constant but the other one changes largely. The steady standard deviations which remain almost constant have the value from 1 μm to 2 μm when machining errors are obtained as the difference from the average error. The steady standard deviation for another machining errors obtained as the differetial error between two successive workpieces shows that recramping tool holders and/or tools increase the value from 1.82 μm to 2.33 μm to 3.83 μm. Exchange of workpieces makes machining error distribution large. The steady standard deviation for the latter increases from 1.45 μm to 2.96 μm and the unsteady one increases from 10.4 μm to 16.8 μm.
公益社団法人精密工学会の論文
1989-02-05