Use axle type part measuring device of center hole as measuring basis

The utility model relates to an use axle type part measuring device of center hole as measuring basis is including 2 location clamping components, location clamping components includes support, ejector pin, master ball suit and compact heap, the master ball suit includes interchangeable standard ball cover and master ball, and the master ball is fixed on the terminal surface of interchangeable standard ball cover, interchangeable master ball cover suit is in the one end of ejector pin 4, and the other end of ejector pin is fixed with rotatory hand wheel, and ejector pin middle part and supportare provided with the measured workpiece and support the recess for the spiral cooperation on the support, 2 location clamping components coaxial arrangement, and the both ends of measured workpieceare supported respectively on two support recesses of fixing a position clamping components, and 2 compact heaps are spiral -lock and fixing on 2 supports respectively. Be applicable to and use the center hole as the axle type