SU1393524A1 - Head for riveting by expanding - Google Patents

Abstract

The invention relates to the field of assembly production, in particular to riveting equipment. The goal is to improve the quality of riveting. The flare riveting head contains a sleeve 1, a drive spindle 2 connected by means of a rotation transfer mechanism to a punch holder 3 s.

Description

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mounted therein at an angle to the longitudinal axis of the punch A, the mechanism for transmitting the rotation is made with a gear ratio equal to an infinite fraction. The head is provided with a longitudinal movement drive and a microvibration mechanism of the punch 4. The spindle 2 and the profiled cam 28 receive rotation from the drive, while the spindle 2 transmits the movement of the punch through a rotation transfer mechanism1393524

the holder 3. The longitudinal movement of the punch 4 is carried out by supplying the working fluid into the cavity A of the drive. Microvibrations on the punch occur when a profiled cam 28 is exposed to stops 25. 25 interacting through springs 24 with plungers 23, which cause changes in the pressure of the working fluid in the pulsation cavity A. 1 hp f-ly, 1 ill.

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The invention relates to the processing of metals by pressure, in particular to riveting equipment.

The aim of the invention is to improve the quality of riveting.

The drawing shows a head for riveting.

The riveting head comprises a sleeve 1, a drive spindle 2, connected by means of a rotation transfer mechanism with a punch holder 3 with a punch 4 mounted at an angle to the longitudinal axis.

The mechanism for transmitting the rotation is located in the housing 5 and is made in the form of a gear 6 fixed in it with internal teeth, drove 7 ,. mounted on the spindle 2 and installed in the housing 5 by means of bearings 8 and 9.

The punch holder is mounted in the carrier 7 by means of bearings 10 and 11, and the punch 4 is installed in the pier holder by means of needle-shaped under the studs 12 and rests on the ball 13. On the punch holder 3, gear 14 is attached, which is connected to gear 6 by means of satellite gears 15 mounted on ax x The covers 16 and 17 close the gears of the rotational gear transmission bearings. The rotation transfer mechanism is made with a gear ratio equal to an infinite decimal fraction, for example, in the form of the following 17 21 23 25 27 th series and so on.

The sleeve 1 is connected to the sleeve 18 of the drive longitudinal movement of ne

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a nut 19. The actuator sleeve 18 is closed with knobs 20 and 21 having axial bores, and 20 are provided with additional through holes in which bushings 22 are installed with plungers 23, springs 24 and stops 25. There are hollow holes in the axial bores of caps 20 and 21 the rod 26, which is fixed at one end on the sleeve 1. In addition, a piston 27 is mounted on the hollow rod 26, and a profiled cam 28 is mounted on the spindle 2.

Head for riveting works as follows.

The spindle 2 and the profiled bucket 28 receive rotation from the drive, with this the spindle 2 transfers the movement to the punch holder 3 through the rotation transfer mechanism. The longitudinal movement of the punch 4 is carried out by supplying the working fluid to the cavity A of the drive.

Punch 4 when. its rotation is determined by the complex law of displacement, and since the gear ratio of the mechanism for transferring rotation from spindle to punch holder is made in the form of infinite decimal fraction, this ensures a uniform rolling of the tool over the surface, which eliminates the surface microwaviness. I

In addition, quality improvement

riveting is promoted by the presence of micro-vibrations on the punch, which occur when a profiled cam 28 is exposed to stops 25, interacting in turn through the springs 24 with the plungers 23, which call 1

Changes in the pressure of the working fluid in cavity A are pulsating.

Claims (2)

1. A head for riveting by flaring, comprising a housing in which a driving spindle is mounted, a punch holder with a punch inclined to its axis and a mechanism for transferring rotation from spindle to punch holder, characterized in that, in order to improve the quality of riveting, the transmission mechanism of rotation from the spindle to the punch holder it is made with a gear ratio equal to an infinite decimal fraction. 93524 2. The head for riveting according to claim 1, characterized in that it is provided with a longitudinal drive with movement and a microvibration mechanism of the punch, wherein the drive for longitudinal movement is made in the form of a sleeve with covers having axial holes and additional through holes in one of the Hrix hollow ten a piston mounted in the axial bores of the caps and fixed at one end on the housing; a piston mounted on the hollow stem, inside which the spindle is housed, and the microvibration mechanism is designed to be located in the additional through holes of the plunger cover and the profiled cam mounted on the spindle with the ability to interact with the plungers.