JPS61154728A - Cold rivet calking device - Google Patents

Abstract

PURPOSE:To reduce a man hour widely and to prevent a gap by inserting a rivet into all rivet holes of a work and by bringing the following rivet to calking position with rotating the work after the completion of calking of one rivet. CONSTITUTION:An upper part die 12 is ascended by removing a washer 14 and by ascending a die holder 6 with operation of a handle 11. A work 25 is loaded to the work holder 23 of a work holding mechanism 15 and a rivet 29 is inserted from above into all rivet holes 28 being provided on the lapped part of the boss part 26 of the work 25 and blade 27. The die holder 6 is descended with operation of the handle 11 and the upper part die 12 is descended and the head part 30 of the rivet 29 is pressed by this upper die 12. The washer 14 is fitted to a fitting groove 13 with this state and the upper part die 12 is fixed. The rivet 29 is then subjected to cold calking work by the lower part punch 4 with operating ram cylinder 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cold rivet riveting device for a vane assembly of a torque converter.

Conventional technology The direction in which the rivets are added is limited due to material issues.

As shown in Fig. 3, the head C is always placed on the b side of the blade (made of aluminum), and the crush @a is placed on the d side of the boss (made of steel).

Conventionally, rivet a was all riveted by hot rivet.

In this case, as shown in FIG. 4, a gap f always occurs in the radial direction of the rivet a, and a gap l also appears on the end face.

Therefore, it was necessary to re-crimp using a general-purpose press.

In addition, conventionally, the downward push required To5, and for this reason, it was necessary to attach rivets for each piece.

Problems to be Solved by the Invention The present invention has been made in view of the above circumstances, and its purpose is to insert the rivets 29 into all the rivet holes 28 of the workpiece 25, and to After riveting is completed, rotate the workpiece 25 and place the next rivet 29.
To greatly reduce the man-hours by making it possible to bring the rivet to the riveting position, and to perform the riveting by cold riveting so that no gap is created between the rivet 29 and the rivet hole 28. .

Means and actions for solving problems In the present invention, a ram cylinder 2 is provided in a fuselage 1.

At the same time, a lower punch 4 is provided on the piston rod 3 of the ram cylinder 2, a work holder 6 is provided on the upper part of the machine body 1 so as to be movable up and down, an upper die 12 is provided on the work holder 6, and a rivet 29 of the upper die 12 is provided on the machine body 1. A locking mechanism A is provided for fixing the work holder 6 at the holding position of the head 30 of the machine body 1, and a work holding mechanism 15 for rotatably holding the work 25 is provided on the machine body 1. , lift the upper die 12, insert the rivet 29 into the rivet hole 28 of the workpiece 25 from above, lower the workpiece holder 6, and remove the rivet 29 with the upper die 12.
The work holder 6 is fixed in this position by the locking mechanism A, and the ram cylinder 2 is operated to cold rivet the rivet 29.

EXAMPLES The present invention will be described below with reference to the drawings. Reference numeral 1 denotes a machine body, and the machine body 1 is provided with a ram cylinder 2, and a lower punch 4 is attached to a piston rod 3 of the ram cylinder 2.

A guide hole 5 is provided in the upper part of the body 1, and a die holder 6 is provided in the guide hole 5 so as to be movable up and down. Aircraft I
A suspension member 7 is provided at the upper end of the suspension member 7.
A hanging bolt 8 is attached to the upper end, the upper end of a spring 9 is hung on the hanging bolt 8, and the lower end of the spring 9 is hung on a mounting ring 10 at the upper end of the die holder 6. A handle 11 is attached to the die holder 6. An upper die 12 is attached to the die holder 6, and a fitting groove I3 is formed in the die holder 6, and a washer 14 is removably fitted into the fitting groove 13. It consists of

The machine body 1 is provided with a work holding mechanism 15.

The workpiece holding mechanism 15 includes a table 16, on which a table ji+7 is movably provided. The movement is adjusted by

A support shaft 21 is rotatably provided on the pedestal 17.
1 is attached with a lower spring seat 22, a work holder 23 is fitted to the support shaft 21, and a spring 24 is provided between the work holder 23 and the lower spring seat 22.

Next, the operation will be explained.

After removing the washer 14, the die holder 6 is raised by operating the nozzle 11, and the upper die 12 is raised.

The workpiece 25 is mounted on the workpiece holder 23 of the workpiece holding mechanism 15, and rivets 29 are inserted from above into all the rivet holes 28 provided in the boss portion 26 of the workpiece 25 and the overlapping portion of the blades 270.
Insert.

The die holder 6 is lowered by operating the handle 11, the upper die 12 is lowered, and the head 30 of the rivet 290 is pressed by the upper die 12. The fitting groove is in this state! Washer 14 on 3
and fix the upper cover 2.

Next, operate the ram cylinder 2 and cold caulk the lower notch (rivet with punch 4) by 29t''.

Effects of the Invention Since the present invention is as described above, the fixation of the work holder 6 by the locking mechanism A is released, the upper die 12 is raised, the rivets 29 are inserted from above into all the rivet holes 28 of the work 25, and the work Lower the holder 6, press the head 30 of the rivet 29 with the upper die 12, and lock the locking mechanism A in this position.
With this, the work holder 6 can be fixed, and the ram cylinder 2 can be operated to cold swage the rivet 29.

In this way, the rivets 29 can be inserted into all the rivet holes 28 of the workpiece 25, and once one rivet 29 has been caulked, the workpiece 25 can be rotated and the next rivet 29' can be brought to the caulking position. The number of man-hours can be reduced considerably, and since cold caulking is used, there is no gap between the rivet 29 and the rivet hole 28 as shown in FIG.

[Brief explanation of drawings]

Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the same, Fig. 3 is an explanatory diagram of a workpiece and a rivet, Fig. 4 is an explanatory diagram of a rivet by hot caulking, and Fig. 5 is an explanatory diagram of a rivet formed by cold caulking. 1 is the machine body, 2 is a ram cylinder, 4 is a lower punch, a 6-piece work holder, 12 is an upper die, and 15 is a work holding mechanism.

Claims (1)

[Claims] A ram cylinder 2 is provided on the fuselage 1, and the ram cylinder 2
A lower punch 4 is provided on the piston rod 3 of the machine body 1, a work holder 6 is provided on the upper part of the machine body 1 so as to be movable up and down, and an upper die 12 is provided on the work holder 6. A cold rivet riveting device characterized in that a locking mechanism A is provided for fixing a work holder 6 at a holding position, and a work holding mechanism 15 for rotatably holding a work 25 is provided on a machine body 1.