Twist drill and forming method thereof
2022 03/02
Twist drill is the most important hole processing tool, it is a kind of double spiral groove complex cutting tool, its main cutting performance (such as processing quality, processing efficiency and tool durability, etc.) and its geometric parameters are closely related. Therefore, people have been committed to the improvement of drill and drilling process research. Twist drill and its Forming Method systematically describes the twist drill's basic structure, geometric Angle and common tool materials; On the basis of studying the forming method of standard twist drill groove and the forming method of twist drill rear cutter surface, the method of forming the rear cutter surface of twist drill by electric discharge wire cutting machine tool is put forward, its forming principle and forming device are introduced, and the experimental study of wire cutting method is carried out. Combined with the simulation research of cutting process, the 3d solid modeling method of twist drill, the finite element simulation and analysis method of drilling process are introduced in detail, and the reasonable selection of drilling processing conditions and drill tip geometric parameters are studied through drilling test.