Fast-tool-servo micro-grooving freeform surfaces with embedded metrology

To improve machining capability of diamond turning of hierarchical structured surfaces, fast-tool-servo (FTS) turning using a sharp point diamond cutting tool (tool tip width <30 µm) is proposed to generate micro grooves on freeform surfaces. An embedded measurement probe is employed to improve t...

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Bibliographic Details
Published inCIRP annals Vol. 69; no. 1; pp. 505 - 508
Main Authors Tong, Zhen, Zhong, Wenbin, To, Suet, Zeng, Wenhan
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2020
Subjects
Cutting
Diamond tool
Surface
Cutting
Diamond tool
Surface
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Summary:To improve machining capability of diamond turning of hierarchical structured surfaces, fast-tool-servo (FTS) turning using a sharp point diamond cutting tool (tool tip width <30 µm) is proposed to generate micro grooves on freeform surfaces. An embedded measurement probe is employed to improve the tool alignment accuracy and also to realise on-machine surface measurement (OMSM) of FTS machined surfaces before surface micro-grooving. A self-developed controller board is used to collect and synchronise all signals between the machine tool, FTS controller and measurement system. The feasibility of the proposed method is demonstrated through successfully generating micro grooves on freeform lens array and an Alvarez lens.
ISSN:0007-8506
DOI:10.1016/j.cirp.2020.04.111