RU2144446C1 - Expanding mill - Google Patents

Abstract

FIELD: plastic metal working, namely manufacture of ring articles in machine engineering. SUBSTANCE: mill includes non-detachable die-bandage mounted on struts in frame, roll fixed in radial direction and mechanism for radially moving die-bandage with drive, bearing support, rotary support for arranging roll. Mechanism for radially moving die-bandage is in the form of crank, length-controlled tie rod, cross piece and rocker arm mounted with possibility of rocking motion. All links of said mechanism are connected with drive shaft and they are kinematically joined one with another. One strut has arch-like port for placing rotary support in it. Rotary support is made with possibility of placing and removing blank. Guiding and controlling roller prevents shifting of blank from vertical axis and provides manufacture of regular shape forgings. EFFECT: improved design of mill units, enhanced quality of products. 2 dwg

Description

 The invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of ring rolling products.

 Known ring rolling mill model "Wagner-2" Germany, in which two pairs of internal rolls are mounted diametrically opposite, mounted on a horizontal table [1]. The feed rolls for rapprochement and retraction relative to the drive outer roll is achieved by displacing the axes by rotating the turntable and the outer roll by a certain amount.

 The disadvantage of the mill is the low accuracy of the rolled rings and the difficulty of adjusting the proximity of the inner roll and the outer matrix-bandage.

 A device for rolling rings, containing mounted in the frame on parallel axes, an inner roll, a radially movable band-matrix, consisting of two coaxially arranged disks and segments fixed in them, the mechanisms of rotation and movement of the disks [2].

 A disadvantage of the known mill is the low accuracy of the parts.

 A rolling mill is known comprising an integral matrix bandage mounted on a bed in racks, a roll stationary in the radial direction, a mechanism for moving the matrix band in the radial direction with a drive, bearing and rotary bearings, to accommodate the roller, a mechanism for moving the matrix band in the radial direction made in the form of a crank connected to the drive shaft and kinematically connected to each other, adjustable along the length of the rod, traverse and link, installed with the possibility of rolling the racks, one of the oryh formed with a hole arch type for accommodating the pivot bearing [3].

 An object of the invention is to improve the accuracy of ring products and the expansion of technological capabilities.

 To do this, the known mill [3] is equipped with a control-guide roller to prevent the workpiece from shifting from the vertical axis of the mill, and the swivel bearing is configured to install and remove the workpiece.

 In FIG. 1 shows a general view of a rolling mill; FIG. 2 is a side view.

 The rolling mill contains an integral, rotatable matrix band 1, which is mounted on two uprights to a vertically mounted rocker, consisting of two parts 2 and 3, and an associated radial band matrix transfer mechanism, consisting of drive 4, the drive shaft with the crank 5 connected to the traverse 6 using an adjustable rod 7, which, in turn, is connected with parts of the wings 2 and 3, which are interconnected by studs 8.

 In the working part between two racks 9 and 10, there is an internal radially fixed combined roll 11, on which the workpiece 12 is mounted. The roll 11 is mounted on a stationary bearing support 13 and a rotary support 14, which operates from the drive 15. The roll 11 is rotated from the main drive 16.

 The stand 10 has an arch-type opening in which the pivot bearing 14 is located.

 The drive 15 consists of a worm gear 17 and an engine 18, which is connected through a gear 17 with a rotary support 14.

 The inner roll 11 is driven into rotation by the engine 19 through the differential 20. The matrix-band 1 is driven into rotation by the engine 19 through the differential 20, a vertically mounted gearbox 21 and the driveshaft 22.

 To ensure that the forgings of the correct shape and control the rolling process are obtained, a control and guide roller 23 is mounted on a support located on the bed.

 The device operates as follows.

 When the drive 4 is turned on, the crank 5 starts to rotate, which lowers by means of a beam 6, adjustable along the length of the rod 7, and a part of the link 2 and 3, with which the band-band matrix 1 is lowered. The length-adjustable bar 7 makes it possible to adjust the gap between the band-band 1 and roll 11, which allows to obtain more accurate workpieces. With the bandage matrix 1, the inner roll 11 simultaneously rotates through the differential 20 for preliminary and final rolling.

 To install and remove the workpiece 12, a rotary support 14 is used, which is turned on by the engine 18 through a worm gear 17.

 The control roller 23 prevents the workpiece 12 from shifting from the vertical axis and thereby provides forgings of the correct shape. At the end of rolling, the roller 23 deviates and signals through the sensor about the end of the process.

Sources of information
1. The patent of Germany N 1289019, CL B 21 H 1/06, publ. 02.72.

 2. USSR, Copyright certificate N 804138, Mkl. B 21 H 1/06, publ. 02/25/81.

 3. RU 95110551 C1 (Kama Polytechnic Institute 06/10/1997).

Claims (1)

 A rolling mill comprising an integral matrix bandage mounted on a bed in racks, a roller fixed in the radial direction, placed in bearings, one of which is made of a bearing and the other one is rotary, a mechanism for moving the matrix bandage in the radial direction, made in the form of a drive shaft connected and a kinematically connected crank, adjustable along the length of the rod, traverse and backstage, installed with the possibility of rolling, while one of the racks has an arch-type hole for placement in it company support, characterized in that it is equipped with a control-guide roller to prevent the workpiece from shifting from the vertical axis of the mill, and the swivel bearing is made with the possibility of installing and removing the workpiece.

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