title: The 'Precessions' tooling for polishing and figuring flat, spherical and aspheric surfaces.
abstract: The PrecessionsTM process has been developed for the control of texture ('polishing'), preservation of form during polishing, and control of form ('figuring'), on flat, spherical and aspheric surfaces. In this first and introductory paper, we summarize the need for aspherics, review some aspheric technologies, and then distill a 'wish-list' of attributes for an aspheric process. Within this context, we focus on special properties of Precessions tools, their use in a family of 7-axis CNC polishing machines, and present experimental results.
authors.forename: David
authors.initials: D
authors.lastname: Walker
authors.forename: David
authors.initials: D
authors.lastname: Brooks
authors.forename: Andrew
authors.initials: A
authors.lastname: King
authors.forename: Richard
authors.initials: R
authors.lastname: Freeman
authors.forename: Roger
authors.initials: R
authors.lastname: Morton
authors.forename: Gerry
authors.initials: G
authors.lastname: McCavana
authors.forename: Sug-Whan
authors.initials: SW
authors.lastname: Kim