Drive shaft press-fitting device

Abstract

The invention relates to a drive shaft press-fitting device. In the drive shaft press-fitting device, when a collet chuck (clamp) is moved backward by a linear motion means, the end part of the collet chuck closes by collaboration of a tapered surface of the collet chuck and an engagement part of a sleeve, and thereby the collet chuck holds an external thread part of the drive shaft. When the collet chuck is further moved backward by the linear motion means, the drive shaft is drawn out of the axle hub by the collet chuck, and thereby the drive shaft is pressed into the axle hub. After press-fitting, when the collet chuck is moved forward by the linear motion means, the collet chuck opens to be away from the external thread part of the drive shaft by a biasing means.

Description

technical field [0001] The invention relates to a transmission shaft press-fitting device for pressing a transmission shaft having an external thread at an end into a hub. Background technique [0002] Japanese Examined Utility Model Application Publication No. H05-41041 discloses a technology in this field. In the propeller shaft press-fitting device disclosed therein, a nut held in a slot provided in the device contacts an end of an external thread of a propeller shaft at which the external thread protrudes from a hub. The device then actuates the nut wrench to rotate the socket and thereby threadably engage the nut with the external thread. At this time, since the hub is held by the device so that the hub does not rotate when the nut is tightened, the end of the propeller shaft gradually protrudes from the hub as the nut is tightened. Then, the transmission shaft is gradually pressed into the shaft insertion hole of the hub by the tightening force of the nut. [0003] ...

AI Technical Summary

Problems solved by technology

[0003] However, since the propeller shaft press-fitting device according to the above-mentioned related art utilizes the tightening force of the nut when pressing the propeller shaft into the hub, there is a possibility that a heavy load is applied to the internal thread of the nut to cause threads on the nut to damage and the drive shaft cannot be reliably pressed into the hub

In particular, in the case where the nut has a groove for fastening by pressing the nut against the external thread of the transmission shaft, there is a possibility that the nut is crushed at the edge of the groove, and when the powder generated due to the crushing When entering the threaded part, seizure occurs on the external thread of the drive shaft and the internal thread of the nut, and the drive shaft cannot be reliably pressed into the hub

Images