CONTROL METHOD FOR MACHINING IN NUMERICALLY CONTROLLED MACHINE TOOL

摘要

PURPOSE:To adjust machining dimensions corresponding to fluctuation in the machined dimensions which is caused in machining a work by changing a correction set point as machining process proceeds. CONSTITUTION:A numerically controlled machine tool 1 has a main control section 2 with which a working program memory 5, a tolerance memory 6, a domain computing element 7, a correcting parameter memory 9, a measuring and controlling section for work dimensions 10, a correction set point memory 11, a mechanism control section 12, a keyboard 13, and a correction computing element 17 are connected through a bus wire 3. A touch sensor 15 is movably connected with the measuring and controlling section for work dimensions 10. In addition, the mechanism control section 12 is provided with a mechanism section 16 for a tool post and a table etc. to be freely driven and controlled by the above section 12. In the case of machining process, the correction set point AV, that is a standard for determining the amount of dimension correction K, can be changed as machining process proceeds.