Concept of a Programmable Fixture for 3-Axis CNC

Ahmad Dalloul,Tanveer Saleh

doi:10.26776/ijemm.02.03.2017.02

Abstract

CNC machine is the one of the major reasons for industrial advancement in recent decades for its ability of producing accurate parts. The most commen CNC machines are of 3-axis and adopted widely in the industrial sector. However, for producing more complicated parts 5-axis CNC machines are required. Although the introduction of the 5-axis machine came after the 3-axis CNC machine has established itself and many manufacturers did not make the move toward the newer model and its high pricing compared to the 3-axis model did not help either. In this time the development of a fixture or a platform to help transfer the 3-axis to a 5-axis to some degree. This paper discusses the concept of a programmable fixture that gives 3-axis CNC machine the freedom to act in similar manner as the 5-axis. The paper describes the mechanism with some initial results of the testing. Result showed that the platform moves in translation manner with an average error of 5.58 % and 7.303% average error for rotation movement.

Highlights

1 INTRODUCTION Numerical Control NC is a method that is used in automation to manufacture highly precise components using commands that are stored in the memory of the machine
CNC machines are used in many manufacturing fields and it is capable of milling, turning, grinding and lathe and other functions to get an accurate product with very small margin of errors
The specification of Arduino Uno R3 controller used in this platform is given in Table 3 [9]

Summary

INTRODUCTION

Numerical Control NC is a method that is used in automation to manufacture highly precise components using commands that are stored in the memory of the machine. In 1947 a new parallel manipulator was invented and it became the most common or a robot. It was invented by Dr Eric Gough, who invented the octahedral hexapod in England. In the United Kingdom Dr Stewart presented six degrees of freedom flight simulator in 1966. It is referred as the Stewart Platform [5]. The Stewart platform was a gate of a new designing era as many inventions were based on the idea of the platform.

SYSTEM DESIGN

SYSTEM ANALYSIS

PROGRAMMING