PURPOSE: To conduct the processing of a work which is required a high plane degree in a short time while maintaining an excellent yield by revolving a tool around a shaft which is eccentric as much as a required quantity from its rotary shaft, and at the same time, rotating an eccentric shaft as it is being revolving around a shaft which is further eccentric as much as a required quantity from this eccentric shaft.
CONSTITUTION: A tool revolves around the rotary shaft of the 3rd rotary body 29 as it is being rotated at a high speed, and the 3rd rotary body 29 revolves around its rotary shaft, and the 3rd rotary body 29 rotates on the rotary shaft of the 2nd rotary body 7 which is different in its rotation angle speed but is co-axial. Further, the 2nd rotary body 7 is to revolved around the rotary shaft of the 1st rotary body 6 as it is moving automatically. As a result, the sum of a 2-step eccentric quantity and a tool radius determines the radius of a processing territory, and the same time, even in a case in which the portion of inclination/projection exists on the cutting or grinding surface of the tool 1, the fear of a concentric step difference being generated is almost dissolved.
TANIZAKI IZUMI
MORITA SATORU
KIRATSUKUSU KK