抄録
Recently, high precision machining and high-speed cutting are required in the die and mold machining. To solve this problem, die and mold machining by 3+2 axis control machining, which is a method of indexing by 2-axis rotary motion and machining by 3-axis feed motion, on 5-axis machining center is proposed in this paper. In this machining process, the list of indexing angle should be determined automatically, because the shape of the die and mold is very complex to determine the angle by an machining operator. Therefore, the main objective of this research is automatic determination method of the list of indexing angle for the die and mold machining. Firstly, we propose the calculation method of optimum indexing angle candidates for required machining surfaces using normal vectors of the surfaces and cutting edge. Secondary, we propose the machinable area evaluation method of calculated indexing angle based on inverse offset method with state flag. Finally, we show the examples to demonstrate the effectiveness of the proposed methods.
