Applicability assessment and adaptation method of cutting conditions based on acceptable area to select cutting conditions for end-milling operation

Abstract

A new methodology to assess and adapt cutting conditions for machining operation planning is proposed in this study. In order to automate machining operation planning, the method to reuse cutting conditions in the past previous machining operations has been proposed in the previous study. However, the assessment and adaptation of cutting conditions are required to apply the referred cutting conditions to the different situation. For the assessment of cutting conditions, an acceptable area to select cutting conditions (AACC) is calculated. The AACC is restricted by several constraints such as spindle power capacity and maximum feed speed of machine tools, torsional and bending strength of cutting tools and so on. In the case that the referred cutting conditions keep in the AACC, the referred cutting condition can be applied to the situation without any revision. In the case that the referred cutting conditions keep out the AACC, the referred cutting conditions cannot be applied to the situation and should be adapted for the objective machining operation. In this study, the referred cutting conditions are adapted so as to keep the machining efficiency such as machining time, tool life and cusp height. This study considers that these three aspects are essential for skillful operators to determine the cutting conditions. The feasibility of this methodology is demonstrated in the case study and cutting experiments. This methodology can assess and adapt the referred cutting conditions for the objective machining operation.

Keywords

• cutting conditions
• acceptabele area to select cutting conditions
• adaptation of machining conditions
• machining operation planning