Machining vibration suppressing method and machining vibration suppressing apparatus for machine tool

摘要

An apparatus includes an external input device that allows setting of the amount of runout and the phase of each cutting edge, a computation device that acquires the rotational phase of a tool and that computes the angular velocity and the phase of vibration of two, X-axis and Y-axis, feed shafts on the basis of the input amount of runout and angular velocity of each cutting edge to generate a feed shaft control signal, and a numerical control device that controls feed in the X-axis and the Y-axis directions. The numerical control device relatively vibrates a workpiece in synchronization with the angular velocity of the tool on the basis of the results of computation performed by the computation device.

主权项

1. A machining vibration suppressing method for a machine tool that machines a workpiece while rotating a tool mounted to a main spindle, the method comprising:
machining the workpiece while applying forced vibration at a predetermined amplitude and a predetermined frequency of vibration to feed operation for a feed shaft during machining, wherein the frequency of vibration of the forced vibration is a frequency of vibration that is equal to a rotation speed of the tool, and the rotation speed of the tool is acquired from a value for controlling a main spindle rotation speed, and whereby the forced vibration to be superimposed on the feed operation is caused to cancel influence of an amount of tool runout.