Rubber expansion mandrel

In order to ensure the machining accuracy of the roller workpiece shown in Figure 1, a rubber expansion mandrel is designed, as shown in Figure 2. The mandrel conveniently satisfies the requirements of the coaxiality of the hole φ74_0~(+0.035)mm at both ends of the workpiece and the outer diameter φ80_(-0.05)~(+0)mm and the parallelism of the end faces. The mandrel is mainly composed of a chicken core chuck 1, a long shaft 2, a compression ring 3 and 8, a rubber ring 4 and 7,

CS08A High Torque Precision Electric Screwdriver Set With Pen Clip

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