プラネタリ・コニカル・ローリング(PCR)の加工機構

概要

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This study deals with the development of a new process for tube ironing. Tube ironing is performed in the absence of sliding friction which is the main cause for galling and breakage in conventional ironing. In this process, a number of rollers rotate around the cone while revolving around their respective axes. The "planetary conical rolling" process is termed PCR, and has the following advantages : ( 1 ) rollers are supported by a shaft free of lateral force, ( 2 ) the diameter of the shaft is almost the same as the inner diameter of the product, ( 3 ) high rigidity of the shaft results in high accuracy of products, and ( 4 ) rollers inclination prevents sliding between roller and material in the radial direction. Experiments are conducted on two processes, i. e. , forward and backward, and two aluminum materials, i. e. , A1050 and A5052 with different rotations, and feed rates. The results show that this process can produce a thickness reduction greater than 0. 89 with a mirror-finished outer surface.
社団法人日本機械学会の論文
1995-09-25