Patent ID: 7882891
Filing Date: 2011-02-08
Classification: B23Q,Y10T

Abstract:
1. A precision surface plate comprising: a hollow casing having a reference plane used as a surface on which at least one of a workpiece and mechanical equipment are placed; a honeycomb structure, formed of collection of substantially identically-shaped enclosed cells, disposed inside the casing; and a heat transfer device provided in the honeycomb structure to allow the cells of the honeycomb structure to communicate with each other and transfer heat, wherein heat is transferred effectively between the cells of the honeycomb structure through the heat transfer device, wherein casing ventilation openings are provided in a wall of the casing to allow cells of the honeycomb structure inside the casing to communicate with the outside of the casing, and air moves in and out the casing through the casing ventilation openings; and further comprising a shutter for opening and closing the casing ventilation openings.