Spring-loaded yoke for two pole armatures - provides support during turning on lathe and has roller support for smoothing vibrations and preventing ovality

摘要

The two pole armature of a turbogenerator (1), when held in a lathe for machining has moments of inertia occurring with reference to the X and Y axis. The differences in elasticity of the armature (1) while being machined, can lead to ovality, and a support is necessary to prevent this. This takes the form of a spring-loaded rocker (43), on whose arm is mounted a pair of rollers (44). The underpart (41) of the telescopic housing is supported by the bed of the lathe, and contains the spiral spring (40), the upper part of which is covered by the housing itself (42). When being machined, the irregularities due to the grooves (2) are taken up by the support rollers (43) and the telescopic spring action. The spring can also be replaced by a hydraulic damping device which gives a similar absorbtion of uneven movement.