Motion Control
Overview
Attendees of this presentation will explore the causes of error in linear motion applications, and learn why it is important to know what's going on inside the machine tool. They will address means for correcting these errors, including the need to drive on the center of mass and measure on the plane of interest. Kinematic design and the theory of exact constraint will also be addressed. In a kinematically supported structure, closed-end equations can predict the qualities of the system in a deterministic way, enabling solutions to the error motions which degrade precision. The presentation will conclude with an examination of Coordinate Measuring Machines (CMMs), the tool many precision manufacturers use to assess quality.
Key Takeaways
- Discover the six main sources of error in ultra-precision machine tools
- Learn why coordinate measuring machines are the tools with which precision is measured
- Understand how control theory can improve precision
- Learn when exact constraint trumps elastic averaging for ultra-precision applications
Speaker
Drew Devitt founded New Way Air Bearings in 1994 to commercialize porous media air bearing technology. As the company's Chief Technology Officer, Devitt drives new product development, guides research efforts, and maintains New Way's connections with research and academic institutions. He has authored many articles and technical papers regarding precision motion and air bearing technology and has been awarded multiple patents for the same. Devitt was elected President of the American Society of Precision Engineering (ASPE) for 2007. He holds a Bachelors degree in business administration.
