THE DEVELOPMENT OF THE LOW TEMPERA TURE DIFFERENCE HEAT PIPE WITH HALF WALL AND ITS APPLICATION ON THE MACHINE TOOL

Introduced in this paper is a new kind of Low temperature differrence heat pipe with half wall, which can be used to improve the temperature distribution on machine tools.The temperature difference between the trout part and the rear part of the upright column of the precision grinding machine MM 7120 A makes the mainshaft with grinding wheel liean, So the grinding accuracy is affected. This kind of heat pipe with special structure has been employed to connect the hot part andc the old part of diffrence and the inclination are retiuced.The theoretical analysis and experiments cuts demonstrate that it is effective for this kind of heatpipe to balance the temperature distribution on the upright column.