High Quality Diamond Turning

Commercially available diamond turning machines offer high levels of accuracy where the full potential of the machine is realised. This is achieved by in-process measurement & test, which monitor the key areas of possible degradation of accuracy in surface form and texture. This paper identifies the most significant of these, and describes practical methods for monitoring & control of the process. New techniques such as an interferometer for rapid diamond tool positioning & centring are highlighted along with the properties of tool wear. Results on some typical diamond machined JR components are presented. 1