Estimation of Minimum Uncut Chip Thickness during Precision and Micro-Machining Processes of Various Materials-A Critical Review.

Szymon Wojciechowski

doi:10.3390/ma15010059

Abstract

Evaluation of the phenomena characterizing the chip decohesion process during cutting is still a current problem in relation to precision, ultra-precision, and micro-machining processes of construction materials. The reliable estimation of minimum uncut chip thickness is an especially challenging task since it directly affects the machining process dynamics and formation of a surface topography. Therefore, in this work a critical review of the recent studies concerning the determination of minimum uncut chip thickness during precision, ultra-precision, and micro-cutting is presented. The first part of paper covers a characterization of the precision, ultra-precision, and micro-cutting processes. In the second part, the analytical, experimental, and numerical methods for minimum uncut chip thickness estimation are presented in detail. Finally, a summary of the research results for minimum uncut chip thickness estimation is presented, together with conclusions and a determination of further research directions.

Highlights

Thickness during Precision andIn 1983, Taniguchi [1] divided cutting technology into conventional, precision, and ultra-precision machining, taking into account the dimensional accuracy of the workpiece.with the progress of time, the achievable dimensional deviations of the machined parts in the scope of the above-mentioned techniques have shifted to much lower values
In the case of ultra-precision machining, the dimensional accuracy of the workpiece is in the range of 0.0008 μm < ε ≤ 0.008 μm
The division into conventional, precision, and ultra-precision machining can be made taking into account the ranges of the uncut chip thickness and considering the phenomena accompanying material decohesion

Summary

Introduction

Thickness during Precision andIn 1983, Taniguchi [1] divided cutting technology into conventional, precision, and ultra-precision machining, taking into account the dimensional accuracy of the workpiece.with the progress of time, the achievable dimensional deviations of the machined parts in the scope of the above-mentioned techniques have shifted to much lower values. In 1983, Taniguchi [1] divided cutting technology into conventional, precision, and ultra-precision machining, taking into account the dimensional accuracy of the workpiece. According to the research [3,4,5,6], the use of conventional machining enables dimensional accuracy of the product ε > 0.8 μm to be obtained, and 0.008 μm < ε ≤ 0.8 μm in the case of precision machining. In the case of ultra-precision machining, the dimensional accuracy of the workpiece is in the range of 0.0008 μm < ε ≤ 0.008 μm. The division into conventional, precision, and ultra-precision machining can be made taking into account the ranges of the uncut chip thickness and considering the phenomena accompanying material decohesion

Objectives

Methods

Findings

Conclusion