SU1201034A1 - Hand-operated riveting press - Google Patents

Description

The invention relates to the field of 'metal forming; in particular, for riveting and assembly work, and can be used in various fields of mechanical engineering 5 for dumplings of predominantly thick packages of riveted parts.

The purpose of the invention is to increase reliability.

FIG. 1 shows schematically 10 the proposed manual riveting press, a general view; in fig. 2- section A — A on fig.1; in fig. 3 section bb in fig. one; in fig. four - . section bb In Fig., 1., 5

Manual riveting press contains coaxially mounted on the bracket 1 crimp 2 and rivet punch 3, which is connected through the main double-arm lever 4 and wedge 5 with the rod 20 of the unified actuator 6. The clamping mechanism of the package of riveted parts consists of a spring-loaded clamping sleeve 7 , which 25 is connected through additional levers 8 with sliders 9, and the latter are interconnected by means of a sleeve 10. A spring 11 serves to return the punch 3 and the clamping sleeve 7 to its original position. Levers 4 and 8 fixed on a common axis 12 turn. the rota .. The lever 4 has at one end a roller 13 which is in contact with the working surface of the wedge 5. The sliders 9 through the sleeve 10 and the adjusting threaded rod 14 are spring-loaded relative to the wedge 5 by the spring 15. The pressing force of the package is determined by the force of spring pre-compression 15 and is achieved by screwing — inverting the adjusting rod 14. A coarse change in the pressing force of a package of riveted parts is carried out · by changing the length of the liner 6. The mecha- ^ 5 base of the press is closed by a casing 17. The roller 13 is fixed by means of the axis 18 on the double-arm lever 4. The roller bearings 19 are placed on the axes 20. The wedge 5 on the side walls has 50 guides 21. To limit the movement of the sliders 9, the stop 22 .

Manual riveting press works as follows.

The press is set by crimping 2 55

on the rivet. For the implementation of the stroke of the compressed air is supplied through the switchgear · ₉

034 ²

into the working cavity of the power drive. Under the action of pressure, the rod moves together with the wedge 5 and is connected. sliders 9 with it. At the beginning of the movement of the wedge 5 and sliders 9, the roller 13 fixed by axis 18 on the lever 4 rolls along the horizontal surface of the wedge, while the supporting heads of the additional levers 8 slide along the inclined working surfaces of the sliders 9 and, turning relative to axis 12, affect the clamping sleeve 7, which moves all the way into the riveted package of parts. The package is being pressed. The force of clamping the package through the two shoulders lever 8 It is used on sliders 9 and on an inclined working surface. two components: along the axis of the rod and perpendicular to it,

"while the last component through the wedge 5 is transmitted to the roller bearings 19, placed on the axes 20. When the axial force on the sliders 9, equal to the force of the preliminary compression of the spring 15, which is adjustable, is achieved by turning-unscrewing the adjusting rod 14, the spring 15 begins to compress and the sliders 9, the levers 8 and the sleeve 7 stop. There is no further increase in the pressing force of the bag. The wedge 5 continues to move, while the sliders 9 move relative to the wedge 5 along its guides 21. After some time e of the beginning of movement, determined by the length of the horizontal section of the wedge 5, begins to move the lever 4 and the associated punching punch 3. The profiles of the working surfaces of the wedge 5 and the sliders 9 are chosen so that the movement of the pressing sleeve 7, i.e. the package is pressed, and then the rivet begins to be riveted by the punch 3. After the rivet is riveted using the spool distributor, air is fed into the reversing cavity, and the air is released from the working cavity, the stem with the wedge 5 returns to its original position, the spring 15 moves the slide blocks 9 relative to the wedge 5 until it stops 22. The spring 11 returns the pressure ► sleeve 7 and the rivet punch 3, as well as the associated two shoulders

3

1201034

four

levers 4 and 8

Use riveting

initial position!

the proposed hand press allows

to obtain an adjustable force of pressing the package, reaching 100 kgf, which improves the quality when riveting thick packages.

φυ $ .2.

1201034

b'b

four-

ya

22

4-

Claims (2)

1. MANUAL RIVETING PRESS, containing a bracket with coaxially mounted support on it and a rivet punch connected through a double-arm lever and a wedge with a power drive, as well as a mechanism. clamping a package of riveted parts, made in the form of a spring-loaded sleeve mounted on the punch, connected by means of two additional double-arm levers installed on both sides of the main and on the same axis with the latter, with a power drive, in order to increase the reliability and quality of the riveting , the power drive is made in the form of a double-acting power cylinder, the valve is mounted on its stem, and the additional two shoulders are the levers of the mechanism of pressing the package of riveted parts associated with the latter through two interconnected sliders with an inclined working surface installed on both sides of the wedge and spring-loaded relative to it with a spring equipped with means for adjusting its force. 2. Press on π ,. 1, that the wedge is made with a cylindrical cavity, the axis of which is parallel to the direction of movement of the sliders, longitudinal through slots in the side walls facing the sliders, and guides located on the 55 The outer surfaces of the mentioned side walls, the sliders are placed in the said guides and are interconnected by means of a sleeve placed in the cavity of the wedge with a thread on the inner surface and radial protrusions on the outer surface mounted in the longitudinal through grooves of the wedge and rigidly connected GOVERNMENTAL with the sliders, and means for adjusting the force of the spring is designed as a threaded rod mounted in the threaded hole of the sleeve. δ and. „1201034 > * 1201