センタ穴の精密振動ラッピング

概要

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In this report, it is analyzed that precise center holes can be obtained by using a new vibration lapping process. And this analytical results can be confirmed by the experiments using a newly lapping device with the stepping motor and ultrasonically vibrated lap. The main experimental conditions are as follows : frequency; 100 Hz, 30 kHz, abrasive grain; WA # 280,WA # 800,concentration; 70 wt%, lapping fluid; light oil, working pressure; 0.2 MPa, lap material; cast iron (FC 20), work material; carbon steel. The main results are as follows : (1) Under above conditions, precise center holes are machined efficiently as compared .with the conventional lapping. (2) It is found that the roundness〜0 vibration turning is succeeded by using the work arbor with this center hole. From these results, it is proved that a center hole can be precisely machined by means of this new lapping process. (3) And more, a new superposition vibration lapping device using an electric-stepping motor and ultrasonically vibrated lap is created, it is confirmed that precise center holes can be machined more efficiently. (4) Therefore, it is considered that this lapping process and device will greatly improve lapping efficiency and accuracy of center holes.
公益社団法人精密工学会の論文
1984-10-05