SU1294504A2 - Die for cutting rolled stock - Google Patents

Abstract

The invention relates to the processing of metals by pressure, and even to the separation of materials, and can be used in the blank production of machine-building enterprises. The purpose of the invention is to increase the durability of a die for cutting steel by increasing the durability of its cutting, their elements. At the working stroke of the machine, V-shaped grooves - stress concentrators are applied on the rolling surface in the place of cutting by the cutting elements 6 and 7. The knife punch 4, mounted in the punch holder 5, is set in motion, and a piece of blanks is produced. To achieve this goal, the sharpening angle at the top of the protrusions on the end surfaces of the lower clamping half-sleeves (RFP) is made at 7-10 ° C. greater than the same angle of protrusions on the end surfaces of the upper RFP, and the ratio of the sizes of the protrusions in height is Nl / L1 / 3-1 / 2, where hg is the height of the protrusions on the end surfaces of the lower RFP; HH is the height of the protrusions on the end surfaces of the upper RFP; 3 il. S (L with y with 4 sd / N

Description

The invention relates to the processing of metals by pressure, namely the separation of materials, can be used in the blank production of machine-building enterprises and is an improvement of the device according to the author. St. No. 965639.

The purpose of the invention is to increase the durability of the die for cutting steel by increasing the durability of its cutting elements.

FIG. 1 shows a die for cutting steel, a general view in section; in fig. 2 — node I in FIG. one; in fig. 3 - node II in FIG.

ki clamping semi-sleeves 2 and 3, respectively. At the same time, V-shaped grooves - concentrates with stresses, are applied on the rolling surface in the place of the cut by the cutting elements 6 and 7. The knife-punch 4, installed in the punch holder 5, is set in motion under the action of a dynamic load and a piece of blanks occurs. A billet of length L falls down and enters the container along an inclined chute.

The return of the knife-puapson 4 to its original position occurs along the reverse path, the rolling 9 is released and fed further, pushing the workpiece of length 10

The stamp for cutting the rolled stock contains a stationary Lt, which also enters the container 1 and the clamping probes installed on it. Then the working cycle is repeated, luvtuki 2 and 3, located on both sides of the knife-punch 4, installed in the punch holder 5, cutting elements 6 and 7, made in the form of protrusions,

on the end surfaces of the clamping semi-0 j 965639, characterized in that, for the purpose of the sleeves, respectively 3 and 2, and the guide sleeves 8. The cutting elements 6 of the upper half-bushes 3 are made with a sharpening angle 7-10 ° less than the sharpening angle of the cutting elements 7 the lower half bushes 2 and the high 25 are made by 7-10 ° more than the same hi more than the height hz of the cutting element angle of the protrusions on the end surfaces 7 of the lower clamping half-sleeves in order to increase the durability of the cutting elements and improve the geometrical accuracy of the cut blanks score uniform in subcutaneous cutting elements.

The stamp works as follows.

When the machine is turned on for a working stroke, the guide sleeves 8, which serve to expand the range of diameters of the cut blanks and press the clamping half-sleeves 2 and 3 to the punch knife 4, produce the rolled 9 and then the blank. St.

increase durability by increasing the durability of the cutting elements, the angle of sharpening at the top of the protrusions on the end surfaces of the lower clamping half-tangency of the upper clamping semi-sleeves, and the ratio of the dimensions of the protrusions in height

thirty

J3 "

itB

 t b

where h

35

the height of the protrusions on the end surfaces of the lower clamping half-sleeves;

hj, is the height of the protrusions on the end surfaces of the upper clamping half-lugs.

ki clamping semi-sleeves 2 and 3, respectively. At the same time, V-shaped grooves - stress concentrators are applied on the rolling surface in the place of the cut by the cutting elements 6 and 7. The knife-punch 4, installed in the punch holder 5, is set in motion under the action of a dynamic load and a piece of blanks occurs. A billet of length L falls down and enters the container along an inclined chute.

The return of the knife-puapson 4 to its initial position occurs along the reverse path, the rolling 9 is released and fed further, pushing out the workpiece

 Lt, which also enters the container. Then the work cycle repeats,

65639, characterized in that, for the purpose, it is made 7-10 ° more analogous to the angle of the protrusions on the end surfaces

Claims (1)

Claims for cutting rolled steel by ed. St. j 965639, characterized in that, for the purpose, the lock is made 7-10 ° larger than the similar angle of protrusions on the end surfaces increase durability by increasing the durability of the cutting elements, the angle of sharpening at the top of the protrusions on the end surfaces of the lower clamping half 925639, characterized in that, with the aim of the lock, it is made 7-10 ° more than the similar angle of the protrusions on the end surfaces the height of the upper clamping sleeves of the floor j 965639, characterized in that the lock is made on a 7-10 ° large angle of protrusions on the end J3 " itB  t b where h the height of the protrusions on the end surfaces of the lower clamping half-sleeves; hj, is the height of the protrusions on the end surfaces of the upper clamping half-lugs. FIG. H FIG. 2 Compiled by Y. Filimonov Editor A. VorovichTechred I. VeresKorrektor E. Roshko Order 423/11 Circulation 976Subscription VNIIPI USSR State Committee for Inventions and Discoveries 1 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4