SU1456276A1 - Hand tool for riveting - Google Patents

Abstract

The invention relates to riveting, in particular hand tools for riveting. The purpose of the invention is to increase productivity by reducing the time for changeover when riveting rivets of different diameters.

Description

Phi5.2

1456276

and lengthj as well as ease of use. To do this, the tool contains a bracket 1, at the ends of which support 2 and crimp 3 with clamping sleeve 4 are mounted. A replaceable cylindrical nozzle with an annular stop 6 on the inner surface is mounted on the working end of sleeve 4. The pressing 3 is rigidly connected to the piston 8 of the hydraulic cylinder 9, which is closed by a plug 10. It is rotatably mounted in the housing of the hydraulic cylinder. To plug 10 is connected high-pressure hose pneumohydraulic.

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When the pneumohydraulic booster is activated, the high pressure fluid enters the cavity of the hydraulic drive. When the piston 8 is moved by means of the spring 11, the clamping sleeve 4 with the nozzle 5 moves. The nozzle rests on the bag and compresses it, and the crimp starts to deform the rivet. The process of forming the locking head is stopped when the crimp contacts the ring stop 6. The height of the locking head is limited by the thickness of the ring stop 6. 1Cp f-ly, 4 ill.

one

The invention relates to the field of riveting, in particular to a handheld mechanized tool for press riveting.

The invention is an increase in productivity by reducing the time for changeovers when riveting rivets of various diameters and lengths, as well as increasing convenience during operation.

FIG. 1 shows a hand tool for riveting, a general view; in fig. 2 - the position of the swage with the clamp package before riveting; Fig. 3 is the same at the moment when the closing head of the rivet is completed; in fig. 4 - connection of the drive tool with pneumohydraulic. The tool contains a bracket 1, at the ends of which a height-adjustable support 2 and a swivel 3 with a clamping sleeve 4 are mounted. A replaceable cylindrical nozzle 5 with an annular abutment 6 on the inner surface mounted on the hub 4 by means of a thread 7 is mounted on the pressing end of the clamping sleeve. Crimping 3 rigidly connected to the piston 8 of the hydraulic cylinder 9, closed by a plug 10. The clamping sleeve 4 is spring-loaded with respect to the piston 8, which is spring-loaded with respect to the bracket 1 by means of a spring 12, to the plug 10 Inonu high-pressure hose 13 of the second end of which is connected

to the pneumohydraulic booster 14, on which the valve 15 is mounted, connected to the pneumatic circuit and the control button 16. The inner diameter of the section 17 of the hydraulic cylinder where the plug 10 is located is smaller than the diameter of the hydraulic cylinder where the piston 8 is located, and forms a step 18 with it, while the length 1 of section 17 exceeds the length of plug 1, that is, the piston 8 and plug 10 is installed between them with a gap. The thickness of the ring stop 6 of the interchangeable nozzle 5 is equal to the height of the closing head 19 of the rivet. The device works as follows.

In the initial state, under the pressure of the pneumatic network, the piston 20 with the plunger 21 of the pneumo-hydraulic actuator is in the extreme right position, the cavity 22 is in communication with the atmosphere, the relief valve 23 is open, the cavity of the hydraulic cylinder 24 is connected to an additional cavity 25, and a limited rubber diaphragm 26.

When you press the button 16, the rod of the spool takes the left position and the air from the pneumatic circuit enters the cavity 22 of the pneumohydraulic booster. The piston 20 with the plunger 21 moves to the left, displacing the working fluid into the cavity of the hydraulic cylinder 9, which, entering the gap between the cap 10 and the piston 8, moves the latter. Crimp 3 forms a locking head. When the piston 8 is moved by means of the spring 11, the clamping sleeve 4 moves with the nozzle 5 at the end. The nozzle rests on the bag and compresses it, and the pressing 3 begins to deform the rivet. The process of forming the clamping head is stopped when the crimp contacts the ring stop 6. The height of the closing head is ensured by the thickness of the ring stop 6.

The proposed tool allows reducing the time for readjustment when riveting rivets of different diameter and length, achieved by a quick change of the nozzle, as well as to increase the convenience of its operation by ensuring the mutual rotation of the plug and the hydraulic cylinder, which reduces the force required for spatial orientation of the tool.

Claims (2)

1. A hand-held tool for riveting, containing a bracket with support coaxially mounted at its ends and crimping with a pressure sleeve of a package of riveted parts, pneumohydro15 Phia.1 five power and crimping drive, made in the form of a hydraulic cylinder with a piston and a plug, connected by means of a high-pressure pneumatic hydraulic booster, characterized in that in order to increase productivity by reducing the time for changeover when riveting rivets of different diameters and lengths , as well as increasing convenience in operation, it is equipped with a replaceable cylindrical nozzle, made with an annular stop on the inner surface, located on one of its ends, and mounted on the working face of the clamping pad streets with the possibility of interaction of the ring stop with the end of the swage, and the plug is installed in the housing of the hydraulic cylinder with the possibility of rotation around its axis o 2. The tool of claim 1, wherein the internal diameter of the hydraulic cylinder under the plug is smaller than the diameter of the hydraulic cylinder under the piston, while the plug and piston are installed with a gap between their ends. 0 Fig.Z v “A