SU1301617A1 - Device for dismantling press-fit joints - Google Patents

Abstract

The invention relates to mechanical assembly production, in particular, to devices for dismounting press joints, preferably for pressing out hinge pins from steering rods of automobiles. The aim of the invention is to increase the usability of the device. For this, the power cylinder is made in the form of a cup 1, coupled with its open end of the cover 4, the intermediate washer 5 and the ring stop 7 to limit the movement of the cover relative to the cup. A clamping device in the form of clamps 11, 12 and clamping screw 15 is provided in the device for fixing the ram to the cylinder to be dismantled. The ram is clamped in the clamping device together with the ram to be removed and the working medium is supplied to the cavity of the glass pressing out the hinge pin 9. from the clip. 2 hp f-ly, 2 ill. i (L G7 Rig.1

Description

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The invention relates to mechanical assembly production, in particular, to devices for disassembling press-joints, which can be used in repairing motor vehicles for dismantling hinged conical fingers of steering bars of automobiles.

The purpose of the invention is to increase the usability of the device by eliminating the need to treat the surface of the disassembled unit that is mated to its working body, as well as to reduce leakage of the working medium.

FIG. 1 shows the device with the location of the clamping screw from the open end of the cylinder of the power cylinder, a longitudinal section; Fig. 2 is the same, with the clamping screw located on the side opposite to the open end of the glass of the power cylinder.

The device contains a power cylinder, made in the form of a glass 1 with an opening 2 for communication of the cavity of the glass with a source 3 of the working pressure, the claws 4 and the intermediate washer 5. The mating surfaces 6 of the open end of the jaw bowl are conical, and their smaller base faces the bottom pieces of glass.

An annular abutment 7 is mounted on the cylinder of the power cylinder to limit the movement of the cover relative to the glass, made in the form of a sleeve with an annular protrusion on its side surface. At the bottom of the cylinder of the power cylinder, a recess 8 is made under the extruded part — a conical pivot pin 9, which must be removed from the casing 10.

The device is equipped with a clamping device for fixing the assembly to be disassembled relative to the power cylinder, made in the form of grippers P and 12, fixed by sleeves 13. In clamp 9, a threaded hole 14 is made, in which clamp screw 15 is installed, and clamps 11 and 12 are equipped with grippers paws 16 and 17.

To prevent damage to the disassembled assembly, a safety washer 18 of soft material is provided.

B. The intermediate washer 5 is made a recess under the spherical support 19, with which, according to the embodiment of the device (FIG. 1),

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the clamping screw 15 operates, and the recess is under the spherical support.

In the device (FIG. 2), the clamping screw interacts with the extruded part, and the spherical support 19 is located between the catch and the intermediate washer. A recess is provided in the gripper for this.

The device works as follows.

The cavity of the ram is filled with a working fluid, such as grease. The annular abutment 7 is unscrewed by the magnitude of the working stroke of the power cylinder, equal to the distance between the bottom of the glass and the yoke 10. The end of the extruded part is placed in the recess 8, and between the bottom of the cylinder and the yoke 10, the safety washer 18 is placed.

The power cylinder, together with the assembly to be disassembled, is clamped in the clamping fixture, while the spherical support 19 presses the cap 4 to the end of the glass, creating the necessary tension in the entire system.

Pumping the working medium into the cavity of the glass creates a pressure in it that provides the force necessary to press out the hinge pin 9.

When pressing out the hinge pin 9, there is a relative axial movement of the cup 1 and the cylinder 4 ,. and depending on the mass ratio of the hinge pin and the yoke, the direction of movement changes — either the finger moves relative to the fixed yoke, or the yoke moves relative to the fixed cone.

In the case of using the device design (Fig. 2), the assembly to be disassembled is placed between the clamping screw and the bottom part of the glass of the power cylinder.

Claims (3)

1. Device for dismounting press joints, mainly for pressing out hinge fingers from steering rods of automobiles, containing a clamping device communicating with a source of operating pressure of a ram and connected to it through a spherical support in a form of clamps with a threaded hole coaxially aligned with a ram head and clamping wines31 The one mounted in the aforementioned threaded hole differs in e c. By the fact that, in order to increase the convenience of operation, the power cylinder is made in the form of a cup with an open end facing the spherical support associated with said open end of the cup Krška, an intermediate washer installed between the lid and the spherical support, as well as an annular stop for limiting displacement of the cap relative to the glass, installed with the possibility of adjusting axial displacement on the glass, while the mating surfaces of the open end of the glass and the cover are made conically reversed PWM to the diameter 174 the bottom part of the glass, and in the last part there is a recess for the extruded part. 2, The device according to claim 1, which is that the clamping screw is installed in the clamping device on the side facing the open end of the glass, and the spherical support is mounted between the end of the clamping screw and the intermediate washer. 3. A device according to claim 1, about tl, which means that the clamping screw is installed in the clamping device on the side opposite to the open end of the glass, and the spherical support is mounted between the claw and the intermediate washer. Editor N. Rogulich Compiled by N. Pozhidaeva Tehred N. Glushchenko Order 1183/15 Circulation 9.76 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, And Corrector L, Patay Subscription