SU1199488A2 - Die for cutting rolled stock into blanks - Google Patents

Abstract

1. STAMP FOR CUTTING ROLLED ON PREPARATIONS by bus. St. No. 965639, characterized in that, in order to improve the quality, C "W" y. and SifeiHa V |; -, l; These billets are made by increasing the stiffness of the rolling clamp; a groove is made on the inner cylindrical surface of each half-sleeve, adjacent to the beveled surface of the protrusion. 2. A stamp in accordance with claim 1, characterized in that, in order to increase durability, the mating surfaces of the mating surfaces of the protrusion and the groove are executed exponentially.

Description

 one

The invention relates to the processing of metals by pressure, in particular, to the design of dies for shear cutting, can be used in the preparation of dimensional workpieces, and is an improvement of the device according to the basic specification. St. 965639.

The purpose of the invention is to improve the quality of billets by increasing the rigidity of the rolling clamp.

FIG. 1 depicts a die for cutting steel, a general sectional view; in fig. 2 — node t in FIG. one; in fig. 3 - the node P in FIG. 2 (in the process of cutting rolled products); in fig. 4 - rolled cutting scheme.

A stamp for cutting rolled products contains a bed 1, fixed semi-sleeve knives 2, fixed on it. clamping half-sleeves 3 located on both sides of the knife-punch 4 mounted in the punch holder 5, cutting elements 6 made in the form of protrusions on the end surfaces of the clamping semi-sleeve 3 and fixed knives 2, and an adjustable stop 7 to limit the proc that 8.

On the inner cylindrical surface 9 of each half-sleeve 3, a groove 10 is made, adjoining along its side 1I with a beveled face 12 of the cutting element 6. The side 11 and face 12 are made exponentially.

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PA internal cylindrical surface 13 of each half-knife blade 2 is made a groove 14, similar to the groove 10.

5 The stamp works as follows.

When the machine is turned on, the rolling 8 is guided along the guides up to the stop 7 and pressed against the fixed semi-sleeve knives 2 with clamping semi-sleeves 3. In this case, V-shaped grooves are applied to the rolling surface 8 at the cut-off point 6. The metal displaced from these grooves is in the form of an overflow (5 is distributed in the grooves 10 and 14

the respective clamping half-sleeves 3 and the half-sleeve knives 2, and the rolling 8 is gaplessly clamped between their inner cylindrical surfaces. The punch knife 4, installed in the punch holder 5, is set in motion under the action of a dynamic load and performs a piece of two blanks. Cut off the workpiece into the container. Then the cycle is repeated.

Thus, the proposed die provides a hard rolling clamp at the cutting position without magnification.

3Q clamping force, due to which the quality of the cut blanks is noBbmia. In addition, the execution of the beveled edges of the cutting projections of the exhibitor increases their durability, and in general, the reliability of the stamp

for cutting rolled products.

Claims (2)

1. STAMP FOR CUTTING RENTAL FOR BILLS by ed. St. No. 965639, which is distinguished by the fact that, in order to improve the quality of the obtained billets by increasing the stiffness of the rolled clamp, a groove is made on the inner cylindrical surface of each half-sleeve adjacent to the beveled surface of the protrusion. 2. Stamp pop. 1, characterized in that, in order to increase durability, the forming surface of the mating surfaces of the protrusion and groove is made exponentially. Figure 1