Abstract
When turning and grinding the long axis with cone thin-walled, they are clamped to be deformation easily and positioned difficultly. Based on the existing theory of clamping with the conical sleeve, we design a new type of fixture in this paper. The outer cone of the fixture cling to the inner cone of the workpiece, it is sealed hermetically at the both ends. The head of the sleeve stretch out of a cylindrical boss, we can use the three-jaw chuck to position it on the machine tool. Also we use the steady rest to fix the end of the sleeve. The steady rest connect with the shell of a rotary joint. The end of the rotary joint screw with the sleeve, the other end of it is connected with a getter pump. It formatted a vacuum between the sleeve and the workpiece by the use of holes around the circumference of the sleeve. The utility model to the fixture used for thin wall conical parts with long shaft.
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