Manufacture of micro sized threads for micro actuator of laser grating mount

Abstract

This work presents the fabrication of micro threads of pitch less than 100 μm for micro components. The micro sized threading tool having a tool nose radius less than 40 μm is manufactured by micro wire electric dis- charge machining (μWEDM) process. This μWEDM pro- cess overcomes the difficulties in conventional machining process for production of threading tools and helps in achieving a corner radius as small as 15 μm with specialized wire tool path strategies. This method also helps in fabrica- tion of special micro tools from commercially available or worn-out tungsten carbide tool inserts.