Papers by Author: Muslim Mahardika

Abstract: Machining processed with various conditions form the surface characteristics of materials. Material processes needed for forming parts such as bone screws. This paper presents surface characteristics of bone screw for orthopedic implant that processed by conventional turning machine with various conditions. Manufacturing production in conventional way of bone screw connector is expected to produce same geometry, dimensions and quality as well as the product from abroad. The screws design type that used for cortical bone orthopedic implant known as cortical bone screw. Cortical screws have fine threads along the shaft and are designed to anchor in cortical bone. In this research, screws were made of stainless steel 316L which mounted on the horizontal lathe and the head manufactured by punching machine. Bone screws which used for interfragmentary bone surgery manufactured by lathe machine with various conditions such as various thread per inch, various cutting tools angle, various cutting tools properties and also various depth of cut. So this research focus on the extent to which the influence of machining parameters namely cutting speed, depth of cut, feed rate, cutting angle, number of thread and tool selection to the surface characteristic of the bone screw. Based on the result from the different machining parameter, they are affecting to the quality of the cortical screw on the microstructure, and the surface roughness.

Abstract: Cutting tool wear is a major problem in machining processes. It has a great effect on the quality of a workpiece. Thus, monitoring cutting tool wear is very important in order to maintain the workpiece quality as well to reduce production rate and production time. The use of a single sensor in a monitoring system may not be accurate to detect cutting tool wear. In this paper, sensor fusion technology is introduced for monitoring cutting tool wear.