上海机床厂生产的PMM12106三坐标测量机是一种高精度、高效能的计算机数控计量型三坐标测量机。该测量机采用辉绿岩的基座和横梁组成的固定龙门结构形式,因此刚性极好。由于采用工作台移动形式致使各驱动点可以位于运动部件的重心附近,因此即使在起动和制动时都可以保持运动平稳,而且还可以减少阿贝误差。该测量机的x工作台,y拖板和z轴都是在有预应力的空气轴承上滑动,故可以获得极高的运动精度,而且它本身也几乎没有 PMM12106 CMM produced by Shanghai Machine Tool Plant is a kind of high precision and high performance CNC CMM. The measuring machine uses a fixed gantry structure consisting of a diabase base and a cross member, so it is extremely stiff. Thanks to the table movement form, the driving points can be located near the center of gravity of the moving parts, so the motion can be stable even during starting and braking, and the Abbe error can also be reduced. The X-table, the y-carriage and the z-axis of the measuring machine all slide on a prestressed air bearing so that extremely high accuracy of movement can be achieved and there is almost no