Kinematics of the Tool in the Process of Polygonal Holes Boring

摘要

The polygonal holes can be made in many different ways. Using rotational tool for boring the polygonal holes is a very efficient way of doing it. Since, in this case, the tool used is of a very complex movement, the variable speed of a blade of the tool must be found for the given constant angle velocity. The aim of this paper is to determine the speed of the tool's blade used for polygonal hole production in manufacturing process.. The given task will be solved using alternative mechanism and applying centrodes. Euler-Savary equation will be used for defining the path of the tool's blade at the top points, while processing the polygonal holes. After theoretical description of the kinematics problem the cutting speed will be defined too in the real conditions in manufacturing process as mechatronics system. The proposed procedure was applied on a concrete case of polygonal hole processing with the aim of defining the velocity of tool's blade as well as of geometry of polygonal contour. The procedure is a very simple one and a very accurate one giving the precise solutions in an analytical and a graphical presentation. On this way prepared all of data for algorithm for automatically design and production of polygonal holes in manufacturing process.