抄録
This paper describes the development of a system for pocket shaping with sharp-edged corners by use of a non-rotational cutter and a 6-axis control machining center. With a rotational tool, the remains take place at the pocket corners due to the configuration of tool, therefore, it is usually impossible to create the pocket shape with sharp-edged corners. In regard to the above problem, this paper proposes the new method to remove the remains from the corners and to form the pocket shape without round corners by the nonrotational tool. Thus, the non-rotational cutting tool is designed and a CAM software is developed to realize the proposed method. The sharp-edged corner lines consisting of the intersection of side surfaces of pocket shape are machined by use of the side cutting edge of the non-rotational tool, and the sharp edged bottom lines consisting of the intersection between the side surface and the bottom surface, by use of the top cutting edge after the rough cutting by 5-axis control machining with conventional rotational tools such as end mills. The system is applied to finish two kinds of pocket shape; one is composed of only planes, and the other of sculptured surfaces. As a result, the pocket shapes with sharp-edged corners are created, and the validity of the system is experimentally confirmed.
