Automatic cutting condition changeover equipment
AssigneeFujitsu Fanuc Limited
InventorHaruki Obara
Life of this patent
Estimating the term…
Abstract
An automatic cutting condition changeover equipment for automatically changing over an electrical cutting condition of a wire-cut, electric discharge machine in accordance with the thickness of a work. The equipment is provided with a feed control circuit for controlling the cutting speed of the work so that a mean working voltage between a wire electrode and the work may be constant, an arithmetic logic unit for calculating a predetermined optimum cutting condition formula on an on-line basis, and electrical cutting condition changeover control circuit for changing a peak current of the power source of the wire-cut, electric discharge machine so that the output from the arithmetic logic unit may be reduced to substantially zero.
Claims6
An automatic cutting condition change-over equipment having a power source and a wire electrode, and having a mean working voltage, a cutting speed, and a cutting speed signal responsive to the cutting speed for controlling the cutting speed of a workpiece, comprising:
- a feed control circuit, operatively connected to receive the cutting speed signal, to the workpiece and to the wire electrode, for controlling the cutting speed so that the mean working voltage between the wire electrode and the workpiece is constant;
- an arithmetic logic unit, operatively connected to receive the speed signal and a peak signal indicating the peak current of the power source, for calculating a predetermined optimum cutting condition formula in accordance with the peak signal and the speed signal, and for providing, as an output, the result thereof;
- and
- electrical cutting condition changeover means for changing the peak current of the power source so that the output from the arithmetic logic unit is reduced to substantially zero.
Dependencies are inferred from the claim text.