加工事例を参照する作業設計における切削条件の適応的修正法

Abstract

A new methodology to revise cutting conditions for machining operation planning has been developed in this study. In order to automate machining operation planning, reuse of cutting conditions in the past machining operations was proposed in our previous study. However, assessment and revision of cutting conditions are required to apply for the objective machining operation from the reference machining operation. For the assessment of cutting conditions, an acceptable area to select cutting conditions (AACC) is calculated. The AACC can be calculated under several limitations such as spindle power and maximum feed speed of machine tools, torsional and bending strength of cutting tools and so on. In the case that the reference cutting condition stays in the AACC, the reference cutting condition can be applied for the objective machining operation without any revision. In the case that the reference cutting condition stays out the AACC, the reference cutting condition should be revised to adapt for the objective machining operation. In our study, a methodology, which revises cutting conditions under keeping productivity, surface roughness (cusp height) and tool life, was proposed. In this report, an expanded methodology to revise cutting conditions by qualified relaxation of machining requirements is proposed to achieve wide range adaptation of the reference cutting conditions to the objective machining operation.