Friction Behavior Analysis In Surface Roughness For Machine Tools

Sahrir, Ahmad Zuhdi (2020) Friction Behavior Analysis In Surface Roughness For Machine Tools. Project Report. UTeM, Melaka, Malaysia. (Submitted)

	Text (24 Pages) Friction Behavior Analysis In Surface Roughness For Machine Tools.pdf - Submitted Version Download (1MB)
	Text (Full text) Friction Behavior Analysis In Surface Roughness For Machine Tools.pdf - Submitted Version Restricted to Registered users only Download (3MB)

Abstract

This main purpose of this project is about friction behavior analysis in surface roughness for machine tools. The main objective of the modern machining industry nowadays is to improve the performance of the machine to produce the best quality of a product. The productivity of the machine tool and any machined part is decided by the quality of the surface produced by that machine. As a result, surface roughness usually uses as an indicator of the quality of produce that been produced. It influences by the machining parameter such as feed rate, and spindle speed. Friction is a highly nonlinear phenomenon, especially at velocity reversal. Quadrant glitches, characterized by spikes at quadrant locations during circular motion are a direct result of this highly nonlinear behavior. The objective of this study is to identify the relationship between friction behavior and surface roughness, to investigate the surface roughness of the machining process, and identify the best parameter to reduce surface roughness. The study only involves surface roughness and roundness measurement. Few samples were prepared by using a 5-axis CNC Milling Machine and tested by using roughness tests and roundness measuring machines in FKP metrology Lab. The surface location errors are used by analyzing the angle and the feed rate at each spindle speed that has been decided. Data form the surface location error will be used to generate a stability chart. The stability chart shows that as the feed rate increase it will affect the quadrant glitch. By increasing, the feed rate will result in a larger maximum contour error. Stick-slip friction behaviour could be observed from the contouring error in a circular test. As the amplitude of the quadrant glitch increase, it also will affect the surface roughness of the product. It has been shown that by using a lower feed rate and higher spindle speed will produce a better surface finish.

Actions (login required)

View Item