Shaping the surfaces of parts using a cutting tool with tangential movement on CNC machines

Abstract

Background. The processing schemes of various surfaces of parts, which are described by three-element kinematic cutting schemes, are given, and the formation of these surfaces on CNC machines during the implementation of linear and circular interpolation is also considered. The purpose of the work is to select a kinematic cutting scheme that provides increased productivity and quality of forming the nominal surface of the part. Materials and methods. The methods of the theory of cutting materials were used, in particular, the analysis of the kinematics of surface treatment of parts with a rotating cutting tool with tangential movement of the cutting edge and discrete movement of the part and the cutting tool on CNC machines. Results. Kinematic cutting schemes have been developed for two rotational and translational, as well as rotational and translational elementary cutting movements; a scheme for processing a flat surface of a part on a CNC lathe with discrete translational movement of the cutting tool and turning of the part is proposed, which provides an increase in productivity and processing quality. Conclusions. The results of the research allow us to choose a rational kinematic cutting scheme and develop a computational and technological map for the formation of flat and cylindrical surfaces of parts on CNC lathes, which provides an increase in productivity and processing quality.

Keywords

• processing schemes
• kinematic cutting schemes
• linear and circular interpolation
• discrete displacements
• calculation and technological map