SU1159705A1 - Method of and die unit for manufacturing bolt-like articles - Google Patents

Abstract

1. A method of manufacturing bolt-type products, including landing the bolt head, depositing a semifinished product with forming an allowance on the rod for subsequent reduction and reduction of the rod, characterized in that, in order to reduce labor intensity, energy consumption and improve the quality of the products, the landing of the bolt head is combined with formation allowance on the rod, and reduction of the rod is performed in one technological transition. Ug L C71 x w

Description

2. The matrix node for the manufacture of bolt- type products, containing bungage and composite insert placed in the housing with inlet and outlet calibration on the working surface, characterized in that the insert wall is perpendicular to its axis in the area between the inlet and outlet calibrating and along the through holes are made to remove grease.

3. The matrix assembly of claim 2, wherein the through-holes are formed by grooves on the end surface of one part of the insert facing the other part of the insert.

4. Matrix node according to claim 2, characterized by the fact that

The cavity of the insert is communicated with the atmosphere through channels formed by grooves on the surface of the contact of the insert and bandage.

5. The matrix node of claim 2, in that the working cavity of the insert is in communication with the atmosphere through openings made in the band and the housing coaxially with the holes of the insert.

6. The matrix node of claim 2, in that the working cavity of the insert is in communication with the atmosphere through holes made in the bandage coaxially with the holes of the insert, and the canals formed by the grooves on the contact surface of the bank and the case.

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The invention relates to the production of products by plastic deformation and can be used in the manufacture of parts such as bolts.

The purpose of the invention is to reduce the labor capacity of energy consumption and to improve the quality of the products obtained by carrying out the process of deforming in one stroke of the tool and removing excess lubricant from the source of deformation.

FIG. 1 shows the product obtained by the proposed method in FIG. 2 is a tool for implementing the method.

The method is carried out as follows.

A bar stock (not shown) is placed in the cavity of the insert (Fig. 2), then a deforming force is applied to the end of the workpiece protruding from the insert, the bolt head is planted and the steps of the rod are reduced in one stroke of the press.

The matrix node for the implementation of the method (Fig. 2) consists of a body 1 fixed by a band 2 and an insert 3c calibrated in it.

In the manufacture of products using a known device in the process of reducing the steps of the bolt rod part of the lubricant applied to the workpiece

before deformation, it remains in the cavity 4 formed by the inner cavity of the insert 3 and the surface of the workpiece. After the larger diameter of the product rod passes the juice of the upper insert that calibrates and closes the cavity, compression of the lubricant begins, and then, with further movement of the product. The compression of the lubricant increases, the specific pressure in the cavity increases, resulting in plastic deformation of the rods in areas (Fig.16). This disadvantage is eliminated in the device according to the following: through hole 5 in the wall of the insert (Fig. 2), at the interface level of the output calibration gauge with the working cavity of the insert connecting to the atmosphere through the annular recess 6 and channel 7, made on the interface of the insert 3 and the band 2 of the through hole 5 in the wall of the insert (FIG. 2), connecting the atmospheric strut through the annular recess 6, the through hole 8 made in the band 2 and the through hole 9 made in the housing 1 through hole 5 (figure 2), connecting with the atmosphere through a ring groove .6, a through hole 10 made in band 2, and a channel 11,

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stuck on the interface of the brace with the shells.

When the steps of the product rod are reduced, excess lubrication through channels 7 and 11 is removed from the cavity and no distortion of the diameters of the rod stages occurs.

FIG. Figure 1 shows technological transitions and diameter distortions in the production of a close-fitting bolt of the rear wheel hub. At the initial diameter of the workpiece P, equal to 21-0.14 mm, when head is disembarked: an allowance is created (it is planted

597054

thickening D, equal to 22.5-0.22 mm) (Fig. 1a), and Fig. 16 shows the preparation of the bolt after reducing both the diameters DI and Og, equal to

 22; 2 ;; and 21: 2; JMM, by diameter diameters of 0.1 and U2 0.3 mm, respectively.

Compared with the base object 10, the invention allows to reduce energy consumption with. obtaining products like bolts and improving their quality by removing excess lubricant from the deformation zone of the workpiece.

Claims (6)

1. A method of manufacturing products of the type of bolts, including the landing of the head of the bolt, the precipitation of the semi-finished product with the formation of an allowance on the rod for subsequent reduction and reduction of the rod, characterized in that, in order to reduce the complexity, energy consumption and improve the quality of the products, the landing of the bolt head is combined with the formation of an allowance on the rod, and the reduction of the rod is performed in one technological transition. Fig 1 2. The matrix node for the manufacture of products such as bolts · containing a bandage placed in the housing and a composite insert with an inlet and outlet gauge belts on the working surface, characterized in that through holes are made in the wall of the insert perpendicular to its axis in the section between the inlet and outlet gauge belts to remove grease. 3. · The matrix node according to claim 2, which is unique, p. I mean that the through holes are formed by grooves on the end surface of one part of the insert facing the other part of the insert. 4. The matrix assembly according to claim 2, characterized in that the working cavity of the insert is in communication with the atmosphere through channels formed by grooves on the contact surface of the insert and the bandage. 5. The matrix assembly according to claim 2, characterized in that the working cavity of the insert is in communication with the atmosphere by means of holes made in the brace and body coaxially with the holes of the insert. 6. The matrix assembly according to claim 2, characterized in that the working cavity of the insert is in communication with the atmosphere by means of holes made in the band coaxially to the holes of the insert and canapes formed by grooves on the contact surface of the band and the body.