DESIGN AND DEVELOPMENT OF JIG FOR DRILLING OF CIRCULAR PART PERIPHERY

Abstract

The product quality, manufacturing time, cost and interchangeability of products are occupied the manufacturing systems planners. Work holding devices are the tooling elements that have a large effect in all of these problems. Fixture is a special holding device use to help in controlling these problems. The lack of fixture flexibility decrease the flexibility of the whole manufacturing system to face rapid change in products design and high competitive between products. Modular fixture is the preferred flexible fixture systems to solve these problems in job or small batch lot size systems. Performing operations on surface of the cylindrical components is always been a challenging job. Jigs and fixtures are serving as one of the most important facility of mass production system.
It is very difficult to indexing and positioning of circular component by index plate with crank and sector mechanism. In this project an attempt has been made for the design and fabrication of jig and fixture for indexing and positioning of cylindrical component in drilling machine at lesser cost. Quality of the performance of a process largely influenced by the quality of jigs and fixtures used for this purpose. The main purpose of a fixture is to locate and in the cases hold a work piece during an operation. A jig differs from a fixture in the sense that it guides the tool to its correct position or towards its correct movement during an operation in addition to locating and supporting the work piece.