THE EFFECT OF THE DESIGN OF A ROTARY PEAKLESS TURNING TOOL WITH CHIPBREAKER ON THE SURFACE ROUGHNESS

Abstract

One of the methods of high-performance finishing turning is based on the use of peakless cutters, the cutting edge of which in the cutting plane is inclined to the axis of the workpiece, and the angle in the plan is most often zero. It is not the tip that is in contact with the workpiece, but a certain part of the cutting edge of the cutter, as a result of which turning is carried out in conditions close to the conditions of free cutting. The design of a rotary peakless rotary turning cutter with a chip breaker is devoid of one of the design disadvantages – the presence of a vertex, the weakest and most worn part of the cutting edge of conventional cutters. A constantly renewable cutting edge due to its rotation allows you to evenly distribute wear, temperature and specific loads, which significantly increases the service life of the cutting tool. Rotary peakless rotary turning cutter with a chip breaker for turning external surfaces, in the design of which a cup cutting plate is placed, mounted and rotating on an axis with bearings and due to its rotation allows the tool to provide high processing performance, increase the operating time and service life of the cutting tool due to the adjustable angle of inclination of the cutting edge – makes it possible to process various materials, and the presence of a chip breaker in the structure allows to improve the quality and reduce the roughness of the treated surface, as well as the chip formation process. Keywords: turning, self-rotating cutter, rotary cutter, peakless cutter, wear, roughness.