Inner spline large diameter centering expansion sleeve

Abstract

The utility model discloses a kind of inner spline large diameter centering expansion sleeve, including large diameter expansion sleeve outer gear;Large diameter expansion sleeve outer gear includes arc top triangular tooth body, the tooth top of arc top triangular tooth body can be contacted with the inner spline large diameter of flange plate to realize large diameter centering.The tooth top left and right sides of arc top triangular tooth body are also provided with sharp inside arc surface respectively.Smooth transition between sharp inside arc surface and tooth top, smooth transition between sharp inside arc surface and tooth surface.The large diameter expansion sleeve outer gear in the device of the utility model adopts arc top triangular tooth shape, can effectively guarantee that expansion sleeve is expanded to the large diameter of the inner spline tooth of flange plate, realize the clamping processing of flange plate with inner spline tooth large diameter centering as design scheme;Meanwhile, the tooth top left and right sides of arc top triangular tooth are also provided with sharp inside arc surface, while guaranteeing the tooth groove fillet of the inner spline tooth of flange plate during clamping, effectively avoid that expansion top misplacement to the inner spline large diameter of flange plate when installing, further guarantee processing precision.

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