A KINEMATICALLY MOUNTED INDICATOR STAND FOR A SOUTH BEND LATHE

摘要

A kinematic mounting or coupling is a device which is used when the connection between coupled components must be decoupled and reassembled without affecting the precision of location of sensing devices, usually measuring or aligning instruments. Such a device is used for example in coupling a theodolite or similar device to it's tripod. A well designed coupling also eliminates strain or distortion that may be introduced by clamping devices or by differential expansion within the assembly. In making a workpiece setup or checking concentricity of a workpiece when chucking or working between centres I have often felt the need for a support which would hold my dial indicator with great rigidity, but yet could be removed from its location and replaced without upsetting the reading, and that would function without resorting to magnetic bases or. clamps. In the device I have developed for the lathe I have introduced a degree of lateral freedom normally absent from a coupling of this type in order to allow traversing of the indicator stand along the bed, parallel to the lathe centre line. This is necessary to locate the indicator where it is required on the work and also permits the measuring of taper in the work, or angular setting of a compound slide.