Grinding and Measuring Long Shafts to Roundness Errors of One Microinch Using Hydrostatic Spherical Centers

摘要

A replacement spindle shaft for the Diamond Turning and Grinding Machine at Livermore was ground by Whitnon Spindle Company using spherical hydrostatic centers developed by Lawrence Livermore National Laboratory. These centers made it possible to both grind the shaft round within one microinch and also measure the roundness on a commercial grinding machine. This report describes the hydrostatic center design and the procedures used to grind the spindle shaft. (ERA citation 11:005206)