An empirical approach for identification of sources of machining errors in ultra-precision raster milling

Suet To, H. Wang, B. Li, Chi Fai Cheung

Research output: Journal article publicationConference articleAcademic researchpeer-review


Ultra-precision raster milling is one of the most significant techniques for the fabrication of high precision components with the surface roughness less than 10nm and form errors less than 0.2 um, without the need for any subsequent polishing. However, no matter how well a machine may be designed, there is a limit to the accuracy that can be achieved. This paper studies the machining errors caused by the diamond tool and the axis motions using Freeform 705G. With an empirical approach, the error sources are separated based on their effects on the surface finish. The main source leading to poor surface finish is identified. This establishes a basis for subsequent error compensation and equipment maintenance.
Original languageEnglish
Pages (from-to)986-991
Number of pages6
JournalKey Engineering Materials
Publication statusPublished - 2008
EventAsia Pacific Conference on Optics Manufacture [APCOM] -
Duration: 1 Jan 2008 → …


  • Empirical Approach
  • Source Identification
  • Sources of Machining Error

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

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