SU1204307A1 - Method of producing flat annular parts from tubular blanks - Google Patents

Description

one

The invention relates to the processing of metals by pressure and can be applied in mechanical engineering for the production of flat annular parts from cylindrical blanks,

The aim of the invention is to provide an increase in the sizes of ring parts.

Figures 1 to 2 and FIGS. 3 to 4 show I and P options for the production of ring parts; in fig. 5 - finished parts.

For option I, the tubular billet is placed on the mandrel and axial forces are applied parallel to the axis of the billet to form a fold and flatten the fold, while from the control side, the ends of the billet are subjected to radial forces in the direction of the top of the fold preventing the reduction of the billet diameter. After flattening, the top of the fold is cut off, giving two details.

Option P tubular billet set in a cylindrical holder, apply axial forces parallel to the axis of the workpiece, forming a fold and flattening - folds, while from the side of the cage at the ends of the workpiece act radial forces in the direction of the top of the fold, preventing an increase in the diameter of the workpiece. After sleep

04307 .2

The edges cut off the top of the fold,. getting two details.

Example .- Flat ring parts were obtained from a tubular lining of Φ 12 X 1 from St 20 material for option 1. An experimental flat piece with a Φ 10 hole for the mandrel was made for the experiments. The internal diameter of the tubular blanks ranged from 10.0 to 10.1, the mandrel for backpressure was made f 10.15, the method was carried out on a hydraulic press P6324, it was found that the greatest length of the billet subjected to draft was 12.3 mm . With further increase in length, 2 corrugations were formed. Accordingly, the maximum diameter after collapsing is 10

15

K - 12x5

K -, Q - 1, Ub,

l l D -19.5. mm and

This value is 15% higher. permissible value for known.

In addition, the use of the proposed method of obtaining flat rings reduces the labor intensity by eliminating crimping operations on the cone and improving the undercut, as there is no need for a die for crimping, cutters for making the undercut. According to this method, it is possible to obtain rings not only round, but also square, elliptical, and other sections.

FagL

ig.5

look down

Circulation 774

Order 8459/9 Subscription

Branch PChT Patent, Uzhgorod, Proektna St., 4

Claims (1)

(54) METHOD FOR PRODUCING FLAT RING DETAILS FROM TUBULAR ZAGES TOVOK by applying compressive distributed forces to both ends of the workpiece until a fold is formed and then flattening it, as well as dividing it into two parts by trimming the crease top, which requires that, in order to increase the size of the ring parts, compressive forces are applied in parallel axis of the workpiece, at the same time at the ends: the workpieces apply radial forces in the direction of the crease apex.