SU740363A1 - Method of producing sleeves with sheet-material shoulders - Google Patents

Description

This invention relates to the pressure treatment of sheet material.

A known method of manufacturing sleeves with sheaves made of sheet material, in which a smooth cylindrical sleeve is rolled, distributes its end to form a bell and subsequently forms a shoulder in ways to apply axial force with the help of a punch l.

This method has a number of disadvantages.

In the manufacture of bimetallic bushing, the end surface of the collar is formed by the material of both the inner and outer layers, which is unacceptable, for example, in the manufacture of hardenable sleeve sleeves. In addition, due to dimensional errors of the source material, the resulting sleeves 20 have low accuracy and insufficient stability of the density of the joint.

The aim of the invention is to manufacture © - / nia bimetallic bushings having

IB of this end surface of the collar & metal of the inner layer of the inner layer and the solid joint along the length of the collar and the cylindrical part without. welding

This goal is achieved due to the fact that before forming the bell, a smooth shaft sleeve is made in the inner and outer diameters, then both ends are trimmed, and its end face is cut from the outer side of the outer flange. an angle equal to the angle Mesgjy forming the socket and the axis of the sleeve, with the maximum diameter of the socket equal to the diameter of the cavity of the neck for shaping the collar, and after forming the latter, it settles into the sleeve of the sleeve.

Calibration of the cylinder bush. trimming the ends provide a precise workpiece with a tightly closed joint. The removal of the chamfer of the outer layer at an angle equal to the angle between the forming socket and the axis of the core prevents the material of the outer layer to reach the three-sided surface of the collar and makes it possible to carry out form-forming at a constant ratio of lead chamfers and walls of the cavity cavity, both {1shchayuyazdem radial compression of the material of the socket, the high accuracy of the burg and the density of the joint. Coordination of the calibration of the cylindrical sleeve and the shaping of the collar when the surface is coated with the wall of the matrix ensures the density of the joint along the entire length of the collar. Draft in torep additionally increases the level of the joint. FIG. 1 shows a smooth cylindrical sleeve after convolution; FIG. 2 scheme of her cal 5brovki; Fig. 3 shows the cut-off after trimming the ends and chamfering; in FIG. 4 shows a socket formation pattern; in fig. 5 is a diagram of forming a collar; in fig. 6 - scheme of precipitation in the butt. The metal strip is cut into flat blanks. (On the figures; not shown), their convolutions are obtained with the aid of the second drive bushings 1 and the calibration of the 9 bushings by crimping the wall on the mandrel 2 in the matrix 3 through the inner and outer shaft and along the thickness. After the STdfo OSMS eetwlak) T pruning of both ends in the package and removal of them, the phagas 4 all over the crack HapyKiffit-o syo 5 vtuyuyyy ytnoM, equal to the angle of the molsd, forming the later shaped socket 6 and the axis of the bush. In peisynbTfiTe, cylindrical sleeve 7 is obtained, which have exact dimensions and tightly closed joint. Beetle 6 is formed by razayachi end of the stupka 7 in the matrix 8 under the action of oscillators L usipy P, c03jaaBaeMblS pUays o-; nom Si Maximum diameter) pacTpjr6a 6 equal diameter 3). cavity of the matrix 1O for shaping the collar Hi, which is molded with the aid of pubsriya 12, re-molded in an axial direction. When Forming a burga 11, the matrix 10 is fixed, the machined bushing Uiratsyy end in the ring 13, and the surface of the chamfer 4 is constantly in contact with the wall of the cavity of the matrix 10. Example. The proposed method is made of bimetallic steel-bronze burt bushings, the main parameters of the technological process were made; . 74 34 Initial Material - steel-bronze strip (steel O8KP GOST 1050-60, bronze OF6.6-0.15 GOST 5017-49). 1. Chopping strips on piece blanks. 5. Contraction of the PLA in the sleeve. 3. Phosphating blanks. 4. Calibration of the sleeves on the mandrel according to: external and internal diameters and over the wall. 5. Trimming the ends of the sleeve and chamfering the entire thickness of the outer layer. 6. The collar is raised over three transitions in one matrix: a) the formation of a socket; b) landing of the collar; c) sediment in the butt side 7.Mechanical machining and grinding of the outer diameter of the sleeve. This method makes it possible to manufacture bimetallic bushings that have a solid joint along the entire end surface of the inner layer and tight junction over the entire length of the tongue and the cylindrical part without welding. Formula and 3 about b e e to and Method of manufacturing sleeves with shoulders of sheet material, in which a smooth cylindrical sleeve is rolled out of sheets, its coad is distributed to form a socket and the nooder shaping of the collar in the matrix by applying axial force, By the fact that, with a chain of bimetallic bushing manufacturers that have metal of their inner layer and a tight joint on the entire end surface of the collar, the entire length without performing welding, before forming, the socket is calibrated With this cylindrical sleeve, the outer and inner diameters are chested, then both ends are cut, and at the end, the chamfer is cut all the way to the outer layer under the corner, which is equal to the angle between the former. the socket and the axis of the sleeve, the distribution of the end of the sleeve is carried out to the diameter of the socket equal to the diameter of the cavity of the die to form the collar, and after the molding of the latter, an axle sleeve is produced at the end of the sleeve. Sources of information taken by time during examination 1. USSR author's certificate Ns 327960, cl. B 21 D 53/10, 1972,

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Claims (1)

A method of manufacturing bushings with collars of sheet material, in which a smooth cylindrical sleeve is rolled up from the sheets, distribute its end with the formation of a bell and then form the collar in the matrix by applying axial force, so that that, for the purpose of producing bimetallic sleeves having on the entire end surface of the metal collar of the inner layer d tight joint over the entire length of the welding without prior obrazovaniem _w funnel is calibrated smooth cylindrical sleeve according to the outer and inner diameters, then both ends are cut, and on the end from the side of the later formed shoulder, the bevel is chamfered over the entire thickness of the outer layer at an angle equal to the angle between the forming socket and the axis of the sleeve, the end of the sleeve is distributed to the diameter of the socket, equal to the diameter of the cavity mat. faces for shaping the shoulder, and after molding the latter produce sediment in the end face of the obtained sleeve.