Pneumatic rubber expansion core shaft
A technology of rubber expansion and mandrel, which is applied in the direction of expanding mandrel, workpiece clamping device, manufacturing tool, etc., can solve the problems of high requirements on the inner wall roughness of the pipe fittings, the support and positioning of the pipe fittings cannot be accurately positioned with the center of the pipe fittings, etc. Material saving effect
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[0014] Among them: mandrel 1, pipe fitting 2, shaft shoulder 3, stopper 4, first rubber sleeve 5, top sleeve 6, second rubber sleeve 7, pneumatic cylinder 8, pneumatic valve 9, push rod 10, handle 11, large hole 12. Small hole 13, large diameter hole 14, small diameter hole 15.
[0015] Such as figure 1 As shown, the pneumatic rubber expansion mandrel 1 of the present invention includes a mandrel 1 and a top sleeve 6. The mandrel 1 is provided with a shoulder 3; the top sleeve 6 is made of duralumin, and the outer diameter of the top sleeve 6 is smaller than The inner diameter of the pipe fitting 2 is provided with a first stepped hole in the top sleeve 6. The first stepped hole includes a large-diameter hole 14 and two small-diameter holes 15 with equal radii. The large-diameter holes 14 are located in the two small-diameter holes 15 Between, such as figure 2 As shown, the top sleeve 6 is sleeved on the mandrel 1, and the two small diameter holes 15 are in clearance fit with t...
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