Optimized kinematics for efficient freeform polishing

Sebastian Stoebenau; Rafael Hild

doi:10.1117/12.2691549

30 November 2023 Optimized kinematics for efficient freeform polishing

Sebastian Stoebenau, Rafael Hild

Proceedings Volume PC12778, Optifab 2023; PC1277803 (2023) https://doi.org/10.1117/12.2691549
Event: SPIE Optifab, 2023, Rochester, New York, United States

Abstract

The growing interest in providing additional degrees of freedom to the design of high-end optical systems has led to an increased demand for freeform optical elements. The efficient fabrication of such elements requires a polishing process that provides high removal rates and a stable removal function while working with a relatively small spot size. Taking these constraints into consideration this paper focuses on the successful implementation of polishing processes applying the A-WPT (Advanced Wheel Polishing Tool) technology. In order to maintain perpendicularity towards the freeform surface to be polished, the A-WPT is run on a 6-axis machining system with an optimized kinematics set-up. Herein the use of a tip-tilt unit successfully suppresses the formation of singularities, e.g. close to the surface vortex when polishing along a raster tool path. First results for the pre-polishing of an off-axis parabolic surface made of Zerodur are analyzed and discussed.

Conference Presentation

Citation Download Citation

Sebastian Stoebenau and Rafael Hild "Optimized kinematics for efficient freeform polishing", Proc. SPIE PC12778, Optifab 2023, PC1277803 (30 November 2023); https://doi.org/10.1117/12.2691549

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available