NUMERICAL CONTROL APPARATUS FOR WORKING FREE CURVED SURFACE

摘要

PURPOSE:To enable cutting requirements to be easily changed and operation time to be shortened by calculating in actual time numerical control data under the minimum numerical value data and cutting requirement representing free curved surface to generate a numerical value control pulse for driving. CONSTITUTION:A numerical control apparatus 8 receives curved surface definition information data A at the input section 5a and cutting requirement data B such as edge form of tool necessary for actual cutting on the input section 5b to obtain in actual time the numerical control data through a free curved surface generation calculating section 6 by a working locus calculating section 7 and further generate numerical control pulse for driving for giving a desired relative movement between a tool and a work in a machine tool 4 to cut the curved surface. Thus, the input curved surface definition information data can be minimized to facilitate the change in the cutting requirement and shorten substantially the operation time from the curved surface design to the curved surface working since the cutting requirement data is separately sent to the input.