METHOD OF MACHINING IRON-BASED METALLIC COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a method of machining an iron-based metallic component for rounding a sharp edge of a cylindrical iron-based metallic component, with which approximation of an amount of droop on an outer peripheral surface and an amount of droop on an inner peripheral surface is easy and further the rounding can be done in a short period of time.

SOLUTION: The machining method of making roundness R on a corner W2 of an end surface W1 on both sides of the cylindrical iron-based metallic component (workpiece) includes a barrel polishing step of concurrently working on numerous workpieces W. The barrel polishing step includes: (1) a first step of plastically deforming the corner W2 of the workpiece W to form a curved protrusion (a) at an outer peripheral edge of the end surface W1 with a plane b with a diameter smaller than an outer diameter of the workpiece left on the end surface W1; and (2) a second step of polishing to remove the curved protrusion (a) to form the roundness R on the corner W2 of the end surface W1.

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