The overarm polishing process chain consists of polishing, cleaning and interferometric metrology of the workpiece. At the TC Teisnach Optics, we strive to automize this entire process chain using an industrial robot. The time proven conventional system requires a skilled operator adjusting the process parameters after each measurement in order to achieve the desired result. These process parameters depend on various conditions and are generally not intuitive. Therefore, a profound knowledge acquired within several years of experience is required. In order to automate the process- chain a robot based polishing cell has been set up, that realizes the conventional overarm polishing process chain. Subsequently this system will be enabled to adjust the process parameters to achieve proper processing of the surface. This can be achieved by an algorithm using a mathematic removal model. Thus, at TC Teisnach Optics we convert the overarm polishing process from manual and highly operator dependent to automated and reproducible. In this contribution we report on the first step towards the automated overarm polishing cell: The exact transfer from the conventional overarm polishing system to the robot cell. To realize this, we built a lens holder for the robot which has the same features as the holder in the conventional polishing machine. We took all adjustable polishing parameters as well as all polishing media on the conventional machine and transferred them to the robot system. Subsequently several tests were conducted using the same parameters first at the conventional machine then on the robot polishing system and the differences between the systems were investigated.
Cryogenic machining is a cooling strategy that has recently been frequently found in research in machining processes for materials such as inconel or titanium. In particular it is reported that these processes are more efficient in terms of tool life and material removal rate compared to those with water-based cooling lubrication. An increase in efficiency and productivity has significant potential from a cost perspective, especially when grinding Ceramic Matrix Composite materials and similar. These processes are used, for example, in the lightweighting of telescope mirrors made of e.g. fiber-reinforced silicon carbide, or Zerodur. An increase in productivity would be clearly noticeable in the manufacturing costs due to normally long machining times. In the "KryoSonic" project, we investigated whether and to what extent the use of cryogenic machining affects the rough machining of Zerodur with and without ultrasonic support.
Proceedings Volume Editor (1)
This will count as one of your downloads.
You will have access to both the presentation and article (if available).
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.