RU172547U1 - FORGING BLOCK OF PRESS HAVING A TRAILER WITH A ROTARY DRIVE - Google Patents

Abstract

The inventive object relates to the field of metal forming, and more specifically to the area of forging metal billets. The proposed forging unit includes a holder, in which the strikers are placed with the possibility of radial and tangential movement, resting on guides, with the opposite side in contact with the inner surface of the holder. that the guides are made wedge-shaped, to a holder having a means of restraint from rotation, is attached to the rotational drive housing, in which are installed ltsy embodied in crackers made from durable anti-friction material such as bronze, and are placed in rectangular windows formed in boykah.Primenenie device allows to solve the technical problem: to broaden the technological capabilities of the device due to the possibility to obtain forgings with the number of faces of more than four.

Description

The inventive object relates to the field of metal forming, and more specifically to the field of forging metal billets.

The prior art devices for forging blanks, including those built in continuous casting and deformation processing lines [1-4]. The use of combined foundry-deformation units allows reducing energy costs for the production of metal products. Devices for forging blanks consist of a forging unit and its drive. The forging block can be four-flange, each of the strikers can have its own radial movement drive [5].

It is also known forging device according to patent RU 2314175 [6] in the form of a forging block, which includes a traverse with a rotation drive, contains strikers placed with the possibility of radial movement in a holder made with the means of keeping it from turning in the press. This device provides for the use of four strikers: two vertical, they are affected by the pressure of the press, and two horizontal, the force is transmitted to them through inclined surfaces by sliding along guides located at an angle of 45 ° to the direction of movement of the working beam of the press. The guides are placed in the centering grooves formed by the walls of the grooves of the holders of the strikers. The known device provides lateral distributing guides with an F-shaped cross section. The transfer of force to the horizontal strikers is limited essentially by the angle of friction for a non-self-braking friction pair. This angle cannot be too large, otherwise the friction pair becomes self-braking. Therefore, the transition to the number of strikers of more than four becomes problematic. At the same time, the presence of four strikers makes it possible to forge products of only square section. Forging hexagonal products could expand the technological capabilities of the device. And the transition to forging an octagonal profile would make it possible to approximate the shape of the product to a circular cross section. Thus, a disadvantage of the known device is not wide enough technological capabilities.

The closest analogue is the device described in A.S. USSR No. 353482. It has a traverse with a rotation drive and contains strikers placed with the possibility of radial movement in a holder made with the means of holding it from turning in the press. In the known device, the strikers are placed in the spindle and rely on supporting and working rollers placed in a holder. When the spindle rotates, the strikers receive a reciprocating movement, due to which the workpiece is deformed. Since the position of the rollers in the cage is not fixed, the moment of impact of each striker on the workpiece is random. Due to the multiplicity of strokes, the strikers form the cylindrical surface of the workpiece. However, obtaining a cylindrical surface is a special case of the forging process, so the technological capabilities of the known device are limited.

The technical task of the proposed facility is the expansion of technological capabilities.

The proposed forging block of the press having a traverse with a drive of rotation, contains the strikers placed with the possibility of radial movement in the holder, made with the means to keep it from turning in the press.

The forging unit is characterized in that it is provided with wedge-shaped guides and a housing configured to be mounted on the lower beam of the press to enable rotation with it, and connected to the clip by means of fingers installed in the housing and secured in crackers of antifriction material, which are placed with the ability to move in rectangular windows made in strikers, while strikers are placed based on the said rails installed in contact with the opposite side with the inner surface NOSTA holder, and are able to tangential displacement.

Thanks to the presence of a rotation drive, it is possible to rotate the housing, which is attached to the breadcrumbs with your fingers. Rusks, moving in the grooves, affect the strikers, moving them in both radial and tangential directions. The manufacture of crackers from a durable anti-friction material, such as bronze, allows them to absorb large loads, as well as reduce friction costs.

When moving the strikers, relying on the wedge-shaped guides, they move the strikers in the radial direction, due to which the gap between them decreases. When the workpiece is in the gap, the strikers reduce the dimensions of the cross section of the workpiece, i.e. forging with radial compression occurs. Unlike the prototype, the number of strikers can exceed the number four. There can be 5, 6, 7, 8, etc. At the same time, five strikers form a five-sided profile, six - a six-sided profile, etc. Thus, the range of forgings is expanded, i.e. expanding technological capabilities.

In FIG. 1 is a plan view of a forging unit, and FIG. 2 - its longitudinal section.

The forging unit includes a ferrule 1 (Fig. 1), in which the strikers 2 are placed with the possibility of radial and tangential movement, relying on guides 3, with the opposite side in contact with the inner surface of the ferrule 1, which has a rotation-holding means. The guides 3 are made wedge-shaped, a casing 4 is attached to the holder (Fig. 2), in which fingers 5 (Fig. 1) are mounted, fixed in breadcrumbs 6 made of strong antifriction material, for example, bronze, and placed with the possibility of free movement in rectangular windows made in strikers. The forging unit must have a rotational drive of the housing and means for securing the cage.

The forging unit is installed on the lower crosshead 7 of the press. The clip 3 has a rotation holding means, which is made in the form of two clamps, consisting of a half ring 8 and a clamp body 9, fixed on the columns 10 of a power plant having a rotation drive, for example, a testing machine. The housing of the clamp 9 on the cage 3 is fixed by two bolts 11. The housing of the forging unit 4 is connected to the lower traverse 7 of the press with a key 12.

The device operates as follows. The housing 4 (Fig. 1, 2) is fixed on the lower traverse 7, securing it against rotation with the key 12. The holder 3 is also fixed on the columns 10 of the testing machine by means of two clamps consisting of a half ring 8 and a clamp body 9 connected to the holder 3 by two bolts 11 The rotation drive is driven, while the crackers 6, moving in the grooves, act on the strikers, moving them in both radial and tangential directions. Thus, the strikers 1 can be divorced and between them can be placed a workpiece designed for forging. When changing the direction of rotation of the lower beam, the housing 4 also changes the direction of rotation. Rusks 6, moving in the grooves, act on the strikers, moving them closer together, due to which the workpiece is radially crimped. By changing the number of strikers, you can change the cross-sectional shape of the deformable workpiece. Unlike analogues, in which the shape of this section could be only a square, the opportunity was created to receive blanks with five, six or more faces. In contrast to the closest analogue, where it is possible to obtain only cylindrical workpieces, the possibility of obtaining multifaceted profiles has been created.

Thus, it is shown here that the use of the device allows to solve the technical problem: to expand the technological capabilities of the device due to the possibility due to the ability to obtain forged blanks with more than four faces.

Information sources

1. Bourkine S.P., Loginov Y.N., Shimov V.V., Babailov N.A. Energy analysis of a through-put radial forging machine. Journal of Materials Processing Technology. 1999. V. 86. Iss. 1-3. P. 291-299.

2. Burkin S.P., Korshunov E.A., Shakhpazov E.Kh., Smirnov V.K., Babailov N.A., Loginov Yu.N. Minimization of power consumption in the production of rolled steel on foundry-deformation modules. Steel. 1996. No.6. S. 29-33.

3. Patent RU 2133650. Method for the production of metal products and an assembly for its implementation / Burkin SP, Korshunov EA, Loginov Yu.N., Mironov GV. IPC B22D 11/00. Application 98115371/02, 08/04/1998. Publ. 07/27/1999.

4. Patent RU 2106930. Complex for the production of metal products / Burkin SP, Mironov GV, Korshunov EA, Loginov Yu.N. IPC B22D 11/14, B21B 1/46. Application: 96106819/02, 04/08/1996. Publ. 03/20/1998.

5. Patent US 4941342 / Herndl O., Schiller W., Multi-ram forging assembly. IPC B21J 7/14; B21J 9/12. Application: US 19890304276 dated 1989.01.31.

6. Patent RU 2314175. Four-forging forging device / Volodin AM, Lazorkin V.A. Petrov N.P., Nikitin V.V. Applicant: OAO Tyazhpressmash. IPC B21J 13/02. Application: 2005139668/02 of 12.19.2005. Published: 01/10/2008. Bull. No. 1.

7. A.S. SU 353482. The crimping mechanism of a rotary forging machine / Novikov AG, Ischenko V.Ya. Applicant: Ural Research Institute of the Pipe Industry. Application No. 1626230 / 25-27 of 03/15/1971. Publ. 07/05/76. Bull. Number 25.

Claims (1)

A forging block of a press having a traverse with a drive of rotation, comprising strikers arranged for radial movement in a cage made with means for keeping it from turning in the press, characterized in that it is provided with wedge-shaped guides and a housing configured to be fixed on the lower traverse the press to enable rotation with it, and connected to the casing by means of fingers installed in the housing and fixed in crackers of antifriction material, which are placed with possible Stu movement in the rectangular windows formed in Boyko, the strikers are arranged on a support with said guide mounted in contact with an opposite side inner surface of the holder, and are able to tangential displacement.

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