论文部分内容阅读
三座标测量机除了承受被测工件的重量外,只在使用钻定位孔附件时有轻微的切削力,所以对刚性和抗振性等要求不能和切削机床相比,但需要保持稳定的几何精度。各座标轴的移动要十分轻快灵活。因此,各厂家特别重视底座和导轨的结构。1.底座测量机的底座有用铸铁的,有用钢板焊接的,也有用花岗石的。铸铁底座的刚性较好,内应力小,是传统的材料。铸铁底座适用于生产批量较大的中小型测量机。焊接结构的底座有重量轻、刚性好等优点,而且通过焊接补助筋还可以加强薄弱环节。焊接结构的最大优点是生产周期短,成本比铸件低约30%。焊接结构适用于单件或批
In addition to the weight of the workpiece under test, the CMM only has a slight cutting force when using the drill bit hole attachment, so the requirements on rigidity and vibration resistance can not be compared with the cutting machine, but the geometry that needs to be stable Accuracy. The movement of each axis should be very light and flexible. Therefore, the manufacturers pay special attention to the structure of the base and rail. 1. Base measuring machine base useful cast iron, useful steel welding, but also useful granite. Cast iron base is better rigidity, internal stress is small, is the traditional material. Cast iron base for the production of large quantities of small and medium sized measuring machine. The base of the welded structure has the advantages of light weight, good rigidity and the like, and can also strengthen the weak link by welding the supplement reinforcement. The biggest advantage of the welded structure is a short production cycle, the cost is about 30% lower than the casting. Welding structure for a single piece or batch