Optimisation of Single Edge Tools Exploitation Process

Abstract

Paper show possibilities to optimization of exploitation process of single edge tools. It decrease cost of machining using optimizing the use of the cutting edge. This possibility was presented for single edge tools in oblique and orthogonal cutting. In oblique cutting was presented optimizing the use of the cutting edge by partially exchange of active section of the cutting edge. It is shown for straight edges. Presents model of special tool and result of made experiments, which shows possibilities to increase tool life. Second presented possibilities is orthogonal cutting with round insert. Presented results of calculations of number cutting edges from one round insert by optimizing the use of the cutting edge. For orthogonal cutting was used normal market construction tools for round inserts. Presents first results of surface roughness for tools with worn up cutting edge and rotate for exchange this worn up fragment of cutting edge. In this case number of edges cutting insert increase many times. This can many times reduce the cost of tools in cutting especially in turning.

Research on Using an Unconventional Tool for Increasing Tool Life by Selective Exchange of Worn Cutting Edge

“…This method is based on the selective exchange of the worn cutting edge (SEWCE). This method was developed at the Bydgoszcz University of Science and Technology for tools with a continuous cutting edge-without a nose [28,29]. The principle of the SEWCE method is to replace a worn edge by moving it to remove a fragment of the edge that determines the roughness of the machined surface.…”

“…Oblique cutting with a straight cutting edge is researched both with positive and negative edge inclination angles [29,30]. The SEWCE method was first used for longitudinal oblique turning with a single straight edge (λ s = −60 • ) [28]. In the trial, the wear criterion was VB = 0.2 mm because of the inclination angle and corresponding sliding distance of 0.3 mm.…”

“…A virtual model of the special tool for oblique cutting using a straight cutting edge with a special mechanism for moving the cutting insert was represented. The concept of using SEWCE for a circle handle insert was presented in [28]. The paper shows both theories of the SEWCE concept, which uses a circle insert in orthogonal cutting, and the experiment results.…”

“…The paper shows both theories of the SEWCE concept, which uses a circle insert in orthogonal cutting, and the experiment results. Mikolajczyk et al [28] identify the edge fragment shaping the surface roughness according to the geometric and kinematic mapping of the edge (GKME) as the smallest renewal movement of the edge, and the hatch of the entire contact ensures complete edge replacement. However, the presented test results indicate that a higher edge rotation is necessary.…”

“…The paper presents the basis for the optimization of single cutting edges in the shape of a circle using the SEWCE effect developed at the Bydgoszcz University of Science and Technology [28,29]. In the article, based on the practical range of the insert dimensions used, graphs showing the effect of radius of insert and feed f on the angle are presented.…”