Direct diamond turning of steel molds for optical replication

Fritz Klocke; Olaf Dambon; Benjamin Bulla; Michael Heselhaus

doi:10.1117/12.830778

20 May 2009 Direct diamond turning of steel molds for optical replication

Fritz Klocke, Olaf Dambon, Benjamin Bulla, Michael Heselhaus

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 728202 (2009) https://doi.org/10.1117/12.830778
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

In this paper the most recent investigations in ultrasonic assisted diamond machining of hardened steel at the Fraunhofer IPT is presented. The goal of this technology is to unify the outrageous specifications of diamond machining process with steel material. The focus lies on the kinematic influence of the discrete frequencies 40 kHz and 60 kHz. Special interest is given to the reachable surface roughness depending on process parameters. The machined steel (1.2083, X40Cr14, STAVAX ESU) is a common mold die material for optical replication processes.Results of the accomplished investigations show the potential of the ultrasonic assisted process and recent developments. By increasing the frequency from 40 kHz to 60 kHz the overall process stability is increased. This makes the process less vulnerable towards feed rate variation or towards the variation of machined material hardness. Furthermore no tool wear is detected at high material removal rates or high cutting distances during component machining.

Citation Download Citation

Fritz Klocke, Olaf Dambon, Benjamin Bulla, and Michael Heselhaus "Direct diamond turning of steel molds for optical replication", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728202 (20 May 2009); https://doi.org/10.1117/12.830778

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