SU893367A1 - Method of producing bar-material parts - Google Patents

Description

(54) METHOD FOR MANUFACTURING DETAILS FROM A BAR MATERIAL

The invention relates to the processing of metals by pressure and can be used for the successive volumetric stamping of bar parts.

A known method of manufacturing parts from a bar material is by stamping a bar and cutting from a stamped workpiece of parts 1.

A disadvantage of the known method is that when a bar is precipitated by a flat punch and die, additional fixation of the bar is required to prevent uncontrolled material flow, which leads to an increase in labor intensity, and it is not always possible to obtain a high-quality cutting of the part along the contour of the bar.

The purpose of the invention is to reduce the labor intensity and improve the quality of the parts produced.

In order to achieve this goal in the method of manufacturing parts from bar material by stamping a bar and cutting out of a stamped workpiece, when stamping a bar, the billet is given a trough-shaped form with a flat central section corresponding to the width of the part obtained and inclined obloechnye collars clamping force.

f

FIG. 1 shows a bar punching scheme; in fig. 2 - sawn-off edge; in fig. 3 shows section A-A in FIG. one.

The method is carried out as follows.

ten

The bar 1 is fed to the punching position, where the punch 2 is given a trough-shaped shape with a flat central portion corresponding to the width of the part to be obtained, and inclined overlapped shoulders. Wherein

15, the material of the rod cavity 3 is filled with the matrix 4.

Then, at the cutting position of the part, the resulting billet is placed in the broach of the cutting matrix 5 and acts on the inclined shoulders.

20 clamping force 6, created in the workpiece 1 a stress state, favorable to high-quality cutting of the part, and punch 7, cut down the part.

The method of stamping with the formation of a trough-shaped form of the workpiece improves the conditions for filling the stream of the stamp, which reduces the technological efforts of the stamping, which contributes to the increased durability of the die tooling, as well as reduces the labor intensity and ensures cleanliness of the section when cutting the part through the thickened part.

F (gr of the invention mule

The method of manufacturing parts of the bar material by stamping the bar and cutting

from the stamped part blanks, characterized in that, in order to reduce. labor input and improvement of the quality of the parts obtained, when the bar is stamped, the workpiece is given a trough-shaped form with a flat central section corresponding to the width of the part obtained and inclined rim shoulders, and when cutting, the inclined obelt edges are subjected to the clamping force.

Sources of information taken into account during the examination

1. USSR author's certificate No. 506456, cl. B 21 O 22/28, 1974 (prototype).

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Claims (1)

Formula of the invention from a stamped blank of parts, characterized in that, in order to reduce, laboriousness and improve the quality of the parts to be obtained, when stamping the bar, the blank $ is given a trough-like shape with a flat central section corresponding to the width of the part to be obtained and inclined shear collars , and when felling, the inclined breaker collars are affected by the clamping force.