Cutting method for inner circumferential face or outer circumferential face of work

Abstract

A cutting method is provided for an inner circumferential face or an outer circumferential face of a work using a cutting tool projecting from a main shaft which turns around a predetermined position serving as a center and for which a turning radius is adjustable. The method comprises the step of in the case that a turning angular velocity of the main shaft is represented as .omega., a distance from a turning center to a tip of the cutting tool is represented as R, and a cutting velocity of the tip of the cutting tool is set to a constant value C, making the cutting velocity of the cutting tool constant by performing control such that co changes in association with a change in the distance R so that .omega.=(C2 -R2)1 / 2 / R is denoted ,where R denotes a time differential of the distance R.

Description

technical field [0001] The present invention relates to the cutting performed on the inner peripheral surface of a workpiece by making the cutting speed constant in cutting performed by a cutting tool with a main shaft that turns (turns) around a predetermined position and whose turning radius can be adjusted freely. And the cutting method of the outer peripheral surface. [0002] In addition, the gist of the above-mentioned "rotation (rotation) of the main shaft" is not the autorotation along the central axis of the main shaft itself but the rotation including the revolution around the above-mentioned predetermined position. Background technique [0003] As a method of forming the inner peripheral surface and outer peripheral surface of the workpiece into curved surfaces composed of various shapes such as a cylindrical shape, a tapered surface shape, and a flange shape, as shown in Patent Document 1, the method of forming In the case of the so-called orbit machining perfor...

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Problems solved by technology

[0012] However, the constant cutting speed in Patent Document 4 is merely that the state of R·ω is constant, and it does not disclose that the constant cutting speed is ensured when the time change rate of the distance R is also taken as a main factor.

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