JP2546145Y2 - Caulking device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking device for caulking a nut to an end of a shaft.

[0002]

2. Description of the Related Art Conventionally, for example, a companion flange is provided at an end of a drive pinion shaft of a differential device, fixed by bolts, and then caulked between the bolt and the shaft.

In such a caulking operation, for example, as shown in FIG. 7, a rotatable member b having a caulking tip a at its tip is rotatably supported by a base frame c, and the base frame c is guided by a guide rail. d by the first cylinder e to move the nut f
The base frame c is backed up by a predetermined supporting pressure with respect to the caulking tip a, and the rotating member b is rotated by the second cylinder g in this state, and the nut f is rotated by the caulking tip a. h.

[0004]

However, in such an apparatus, the caulking is performed by operating the second cylinder g while maintaining the back-up state by the first cylinder e. , G must be controlled, which complicates the caulking operation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a caulking device which can apply a force required for caulking by one elevating member and receive an escape.

[0006]

In order to achieve the above object, the present invention presupposes a caulking device for caulking a nut to an end of a shaft. A rotatable member supported so as to be capable of being fixed to the rotatable member, and a caulking member for caulking the caulking portion of the nut to a shaft; A cam mechanism interposed between the caulking member and the elevating member.

[0007]

Since the cam mechanism is interposed between the caulking member and the elevating member, when the elevating member is lowered, the rotating member is rotated, and the caulking member at the tip end is rotated. Swage the nut to the end of the shaft. At the same time, a reaction force due to the caulking is received by the elevating member, and the elevating member moves.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

In FIG. 1 showing the overall structure of the caulking device S, reference numeral 1 denotes caulking means, and a movable member 3
It is supported by. The movable member 3 includes sliders 3a, 3
a, and the sliders 3a, 3a are slidably engaged in a vertical direction along a guide rail 5 fixed to the base 4. A projecting member 6 projects from the upper end of the movable member 3, and the piston rod 7 a of the hydraulic cylinder 7 is connected to the projecting member 6, whereby the movable member 3 is moved to the guide rail 5 by the expansion and contraction of the cylinder 7. It goes up and down along.

As shown in detail in FIGS. 2 to 6, the swaging means 1 has a rotating member 12 rotatably supported by a cylindrical frame 11 via a rotating shaft 12a. A caulking member 13 is attached to a lower end of the rotating member 12 by a screw member 13a. A claw member 14 for positioning is rotatably supported by the frame 11 near the rotatable shaft via a rotating shaft 14a. The claw member 14 has a spring receiving portion 14b, and a spring member 15 is interposed between the spring receiving portion 14b and the spring seat portion 11a of the frame body 11, whereby the tip claw portion 14a of the claw member 14 is lowered. Is always urged in the direction to protrude. The rotation member 12
A restricting member 16 is attached to the tip of the member slightly above the caulking member 13 by a screw member 16a corresponding to the claw member 14, and when the rotating member 12 is rotated for the caulking operation, the claw member is 14 is pressed to rotate about the rotation shaft 14a against the elastic force of the spring member 15.

In the vicinity of the upper end of the rotating member 12, a roller member 17 is rotatably supported on a rotating shaft 17a, and on one side of the roller member 17, a tape cam of an elevating member 18 is provided. The surface 18 a comes into contact, and the elevating member 18 rotates the rotating member 12 via the cam mechanism 24. Lifting member 1
Reference numeral 8 has a guide hole 18b, and a pin member 20 supported by a support member 19 is slidably engaged with the guide hole 18b, so that the elevating member 18 moves up and down only in the axial direction. The support member 19 is attached to the upper part of the base frame 11 so that a part thereof protrudes from the upper end surface of the base frame 11. Further, the supporting member 19 is provided with a leaf spring member 21 which elastically contacts the other side of the roller member 17.

As shown in FIG. 1, a cylinder 22 is disposed above the elevating member 18, and a pressing portion 24 at the tip of a piston rod 23 of the cylinder 22 descends to press the upper end surface of the elevating member 18. By doing so, the elevating member 18 descends, whereby the rotating member 12 is rotated, and caulking is performed.

Next, an example will be described in which the above-described device is applied to the attachment of a companion flange B to an end of a drive pinion shaft A of a differential device.

First, a companion flange B is attached to an end of a drive pinion shaft A, and a nut C is applied to a screw portion A1 at the end of the shaft.

In this state, the caulking means 1 is moved up and down along the guide rail 5 by the cylinder 7 so that the nut C is engaged with the lower portion of the frame 11 of the caulking means 1. At this time, the claw member 14 is engaged with the groove A2 of the shaft A, and the positioning between the caulking means 1 and the nut C is performed.

Then, when the pressing portion 24 is moved down by operating the cylinder 22, the pressing portion 24 is
, And the lowering member 18 is lowered.

The lowering of the elevating member 18 causes the roller member 1 at the upper end of the rotating member 12 via the taper cam surface 18a.
7 is pressed against the elastic force of the leaf spring member 21,
The roller member 17 is displaced (see the chain line in FIG. 2), and the rotating member 1 is rotated.
2 rotates.

By the rotation of the rotating member 12, the regulating member 16 presses the claw member 14, and the claw member 14 and the shaft A
Is disengaged from the groove A1 and the caulking member 1
3 presses the caulking portion C1 of the nut C to caulk the shaft A. At this time, since the cylinder 22 fulfills the two functions of caulking and backup, the escape of the elevating member 18 upward is restricted, and the caulking operation is performed reliably.

The caulking operation is performed in this manner.
When the caulking operation is completed and the shaft member A is separated from the shaft A, the claw member 14 returns to the original position by the elastic force of the spring member 15.

In the above embodiment, the caulking means 1 is
Although the example in which the caulking operation is performed in a state where the caulking operation is performed by the operator has been described, the present invention is also applicable to a case where the operator holds the caulking means 1 alone (see FIG. 2) by hand and performs the caulking operation.

[0021]

[Effects of the Invention] Since the present invention is configured as described above,
Since the force required for caulking is given by one elevating member and escape is performed, the caulking operation can be performed with a simple structure.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a caulking device.

FIG. 2 is a detailed view of a main part of the caulking device.

FIG. 3 is a cross-sectional view taken along line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line DD of FIG. 2;

FIG. 6 is a bottom view of a main part of the caulking device.

FIG. 7 is a schematic view of a conventional caulking device.

[Explanation of symbols]

 S Caulking device A Shaft C Nut 1 Caulking means 4 Base frame 12 Rotating member 13 Caulking member 18 Elevating member 24 Cam mechanism

Claims (1)

(57) [Scope of request for utility model registration] 1. A caulking device for caulking a nut to an end of a shaft, comprising: a frame; a rotating member rotatably supported with respect to the frame; and a nut fixed to the rotating member. A caulking member for caulking the caulking portion to the shaft, and an elevating member that moves in the axial direction on the axial extension of the nut,
A caulking device comprising a cam mechanism interposed between the caulking member and the elevating member.