SU1346301A1 - Tool for enlarging tubular billets - Google Patents

Abstract

The invention relates to forging and pressing equipment and provides for improved tool durability and quality of finished products. The tool contains a matrix (M) 1 installed with the possibility of rotation from the drive, placed at an angle about the axis of M with the possibility of rotation of the roll roll (B) 3 with the conical lateral surface (CBP) 4 and face surface 5 as part of a sphere. The spherical end surface B 3 is made convex and mates with the CPB 4. The common base of the CPB 4 and the sphere forms an angle equal to the center of the sphere (180 ° - 2s (). In the cavity 11 1 there is a workpiece 6 and an ejector. The mentality B-3 is set so that the center of the sphere is on the axis of rotation M 1. Then the rotation M 1 is turned on and B 3 is fed along the axis of the rotation M 1. When touched with the winding 6 3 begins to rotate due to the joint rotation and movement in the axial direction B 3, the workpiece 6 roll vaets in detail. The process of Great, FLS ..do hard stop. 2 yl. i (with about 00 L

Description

3134

The invention relates to press-forging equipment, namely, devices designed for rolling tubular blanks.

The purpose of the invention is to increase tool life and quality of finished products.

Figure 1 shows a tool when calibrating an internal diameter with a flange; on phage.2 - the same, when distributing the tubular billet with the flange rolling ..

The tool contains a matrix and a spindle 2 that can be rotated from the drive, placed at an angle with the axis of the matrix 1 and can be rotated about its axis, the roll roll 3 with a conical side surface 4 and the end surface as part of a sphere 5, the diameter of which is taken the inner diameter of the finished product, while the spherical end surface 5 of the roll roll 3 is made convex and mates with the conical surface 4, and the common base of the conical surface and the sphere forms with the center sphere angle equal to (2.0). In the cavity of 1iri iufji 1 are placed z.otovka 6 and ejector vat fir.

 I The tool works as follows.

The roll 3 is set so that the center of the spherical part is on the axis of rotation of the matrix 1. Then, the spindle 2 is turned on and the roll roll; 3 is fed along the axis of the matrix 1. When in contact with the workpiece 7, under the action of the force of the roll roll, i3 starts to rotate. Due to the combined rotation and movement in the axial direction of the roll roll 3, the preparation 7 is rolled into the part. The process is led to a hard stop. Then the roll 3 is retracted to its original position, the rotation is turned off and the part is pressed out.

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The use of a pre-cut tool allows an increase in the quality of producing 1x parts, the durability of the rolls, and also eliminates the time required for the subsequent mechanical processing of the rolled products. A positive result is achieved due to the fact that the internal profile of the billet is formed by the spherical part of the tool with a diameter equal to the internal diameter of the finished part, in this case, an equal distribution of pressure on the tool and mutual compensation of bending moments is achieved.

High surface cleanliness is also achieved due to the fact that the design of the internal profile is in fact carried out with a spherical mandrel mandrel. The conical part of the tool maintains the size rolled out by the spherical part in the process of manufacturing, which makes it easy to remove the tool after the rolling and ensures high quality of the product.

Claims (1)

Formula and inventions A tool for rolling tubular blanks, containing a matrix installed with rotation from the drive and placed at an angle to the axis of the matrix with the possibility of rotation relative to its axis of the roll roller with a conical side surface and end surface as part of a sphere, differing from that, in order to increase tool durability and quality of finished products, the spherical end surface of the roll roll is made convex and mates with a conical surface, and the common base of the conical surface and spheres form, with the center of the sphere, an angle equal to (180 ° .2й (), where c / is the angle of inclination of the roll roll to the axis of the matrix. Editor N. Yatsola Compiled by V. Ponikarov Tehred. L. Kravchuk Order 5949 Circulation 693 VSHPI State Committee on Inventions and Discoveries under the State Committee on Science and Technology of the USSR 113035, Moscow Zh-35, 4/5 Raushsk nab. Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FI.2 Proofreader M. Samborska Subscription