A new tool path for optical freeform surface fast tool servo diamond turning

Fast tool servo–assisted ultra-precision diamond turning has been extensively regarded to be a very promising technology for the fabrication of optical freeform surfaces, and micro- and nano-structured surfaces with high efficiency and high surface quality. This article describes a changing feed-rate tool path which can adjust the tool position arbitrarily both in the x-direction and z-direction to obtain homogenous surfaces. Meanwhile, it can improve machining efficiency, save cutting parameters calculation time, and avoid over-cutting at workpiece center. Cutting experiment is carried out to implement the new tool path.

[1]  Torsten Beck,et al.  Polymeric photonic molecule super-mode lasers on silicon , 2013, Light: Science & Applications.

[2]  Y. Wong,et al.  Ultraprecision machining of micro-structured functional surfaces on brittle materials , 2011 .

[3]  Shuyan Yang,et al.  Design and control of a fast tool servo used in noncircular piston turning process , 2013 .

[4]  Ekkard Brinksmeier,et al.  Review on diamond-machining processes for the generation of functional surface structures , 2012 .

[5]  Geok Soon Hong,et al.  Optimal selection of machining parameters for fast tool servo diamond turning , 2011 .

[6]  Krishnan Suresh,et al.  Constant Scallop-height Machining of Free-form Surfaces , 1994 .

[7]  Yusuf Altintas,et al.  A Piezo Tool Actuator for Precision Turning of Hardened Shafts , 2002 .

[8]  Wen-Hong Zhu,et al.  A fast tool servo design for precision turning of shafts on conventional CNC lathes , 2001 .

[9]  D. Lucca,et al.  Surfaces in Precision Engineering, Microengineering and Nanotechnology , 2003 .

[10]  Dehong Huo,et al.  A dynamics-driven approach to the design of precision machine tools for micro-manufacturing and its implementation perspectives , 2008 .

[11]  Paul I. Ro,et al.  Sliding-mode control of a nonlinear-input system: application to a magnetically levitated fast-tool servo , 1998, IEEE Trans. Ind. Electron..

[12]  Wolfgang Osten,et al.  Solving the inverse grating problem by white light interference Fourier scatterometry , 2012, Light: Science & Applications.

[13]  Kai Cheng,et al.  Experimental study on the effects of feed rate and tool geometries on tool wear in diamond cutting of sinusoidal microstructured surfaces , 2011 .

[14]  F. Fang,et al.  Cylindrical coordinate machining of optical freeform surfaces. , 2008, Optics express.

[15]  Mahmudur Rahman,et al.  A novel method for layered tool path generation in the fast tool servo diamond turning of noncircular microstructural surfaces , 2013 .

[16]  Chi Fai Cheung,et al.  Analysis of surface generation in ultra-precision machining with a fast tool servo , 2010 .

[17]  Qunyi Chen.  Design and control of a fast long range actuator for single point diamond turning , 2009 .

[18]  Yang Gao,et al.  Simultaneous additive and subtractive three-dimensional nanofabrication using integrated two-photon polymerization and multiphoton ablation , 2012, Light: Science & Applications.

[19]  Hong Lu,et al.  Microstructure of fast tool servo machining on copper alloy , 2012 .

[20]  Harry A. Atwater,et al.  Highly efficient GaAs solar cells by limiting light emission angle , 2013, Light: Science & Applications.

[21]  A. Tünnermann,et al.  Freeform manufacturing of a microoptical lens array on a steep curved substrate by use of a voice coil fast tool servo. , 2011, Optics express.

[22]  Yoram Koren,et al.  Efficient Tool-Path Planning for Machining Free-Form Surfaces , 1996 .

[23]  Stephen Joseph Ludwick.  A rotary fast tool servo for diamond turning of asymmetric optics , 1999 .