SU1234673A1 - Method of jointing parts - Google Patents

Description

The invention relates to mechanical engineering and can be used mainly in thin-walled contractions made of steel or itane alloys to join the etals, one of which is made in the form of a box section profile.

The purpose of the invention is to improve ease of use.

FIG. 1 shows a general view of an etale, in FIG. 2 - the same, option; in fig. 3 - distance, sleeve; Figs. 4 and 5 show the assembly operations of the joint of parts.

The connection of parts consists of an attachable part 1, made for example in the form of a profile piece of angular or T-section, part 2 made in the form of a box section profile containing wall 3 with aperture 4, wall 5 with an aperture 6 and vsechkoy 7, fastener 8 made, for example, in the form of a standard bolt or a bolt with a tapered or stepped head, a spacer sleeve 9 containing fuzz 10, protrusions — reliefs 11, an intermediate washer 12 placed in the box section section, tool 13 and 14 dl fuzz formation on the end face of the sleeve, the tool 15 and 16 dl. welded bushings with box section walls.

The taper or step part of the cooking fastener 8 is placed in the hole 6, the central part of the fastener rod is located in: the hole in the sleeve 9, and the end of the bolt rod is placed in the holes of parts 1 and 2 and the intermediate washer 12.

The method of joining parts is as follows.

In the wall 3, parts 2 drilled a hole 4 under the sleeve 9, and in the wall

5- hole 6 under the rod of the fastening element 8, wherein the hole

6 is drilled with a diameter equal to the outer diameter of the sleeve 9, and the hole 4 with a diameter equal to the diameter of the rod of the fastening element 8. The sleeve 9 is inserted through the hole 6 all the way into the inner surface of the wall 3,

Using the tool 13 and 14, the end of the sleeve 9 through the hole 6 is inserted under the inner surface

walls 5; When the tool 13 is moved in the axial direction towards the tool 14, its forming section is made, for example, in the form of:

Ie cone, advances on the end of the sleeve 9 from the side of the hole 6 and forms a fuzz until the edge of the sleeve 9 is completely under the inner surface of the wall 5.

in order to protect the internal surfaces of the walls 3 and 5 of the profile part 2 and the ends of the sleeve 9 from deformation, the length (height) of the sleeve is less than the length (height) of the internal cavity of the part 2, In addition, using tool 14, the protrusions 11 are protected from damage . If the sleeve 9 is made with a smooth inner surface (FIG. 1), then the sleeve 9 is first welded to the wall 3 of part 2, and then the end of the sleeve 9 is expanded. If the sleeve 9 is made with internal thread (FIG. 2),

the sleeve 9 is unscrewed from the tool 14 to form a gap between the wall 3 and the sleeve 9, after which the end of the sleeve 9 is expanded,

Then, using the tool of electrodes 15 and 16, the walls 3 and 5 of part 2 are pressed against the ends of sleeve 9 through reliefs 11. In this case, wall 5 is deformed to form step 7, which acts as a compensator for the difference in length of sleeve 9 and the internal cavity 2. The connection of the ends of the sleeve 9 with the walls 3 and 5 of the part 2 is possible by any of the known methods: soldering, welding. The simplest and most technologically advanced is the relief welding, which is carried out either in one operation or in a series of one after another operations, for example, when the end of sleeve 9 is first prized to wall 3 (figure 1), and then the end of sleeve 9 against the wall 5, or (FIG. 2), the ends of the sleeve 9 are welded to the walls 3

and 5 parts 2 at the same time.

Then, the fastener 8 is used to tighten the joint. In this case, since the sleeve 9 is connected in one piece with part 2, it is possible to use a fastener not only with a tapered head, but also any standard fastener.

Before tightening the joint, install an intermediate washer 12 in the grating 7.

The proposed method of joining parts ensures reliable tightening by compensating for the difference in lengths (heights) of the sleeve 9 and the inner strip of the part 2 due to the pressure in the wall of the part 2, the fixed connection of the sleeve 9 with the walls 3 and 5 of the part 2 and the installation of the washer 12 in the step 7.

Repeated assembly disassembly provides a fixed connection 12346734

the sleeve 9 with walls 3 and 5 de

Tali 2.

The use of the tool for riveting the ends of the sleeve 9 instead of the fastening element with a conical headrest expands the field of application of the device and allows the use of standard fasteners without conical head restraints, smooth and threaded bushes, ensures the assembly of the joint in conditions like two-sided and unilateral access to the junction, which simplifies its design.

Fig.Z

Claims (1)

METHOD FOR CONNECTING DETAILS, including the operation of forming through holes in the walls of the box part, installation c. the indicated holes of the remote sleeve, mounting the connected part, installing a bolt with a nut in the remote sleeve and forming a conical section on it, characterized in that, in order to increase the convenience of operation, the conical section on the remote sleeve is formed before installing the bolt in it, after installing the remote sleeve deform the wall of the boxed part in the zone of the conical section of the distance sleeve all the way to the last and rigidly connect the sleeve to the walls of the boxed 'part. FIG. 1 ”SU„ „1234673 A1