WO2012053931A1

WO2012053931A1 - Four-die forging apparatus

Info

Publication number: WO2012053931A1
Application number: PCT/RU2011/000365
Authority: WO
Inventors: Алексей Михайлович ВОЛОДИН; Владислав Алексеевич СОРОКИН; Николай Павлович ПЕТРОВ; Виктор Андреевич ЛАЗОРКИН; Василий Васильевич НИКИТИН; Владислав Вадимович ГОРШКОВ; Андрей Григорьевич УВАРОВ
Original assignee: Открытое Акционерное Общество "Тяжпрессмаш"
Priority date: 2010-10-18
Filing date: 2011-05-26
Publication date: 2012-04-26
Also published as: CN103025452A; EP2631021A1; EP2631021A4; KR20130132738A; RU2446906C1

Abstract

The invention relates to four-die forging apparatuses and can be used in the forging of ingots and blanks on hydraulic forging presses. The problem addressed by the invention is to reduce the time expended on removing the apparatus from the working zone of the press and on mounting said apparatus in the working zone of the press. For this, holders of upper and lower dies have ribs with three openings. One of the openings is arranged along the axis of the longitudinal plane of symmetry of the apparatus and the other two are arranged symmetrically relative to said plane. Springs are mounted in openings along the axis of the longitudinal plane of symmetry, the springs ensuring the vertical displacement of the holder of the upper die relative to the holder of the lower die. Centring guides are mounted in symmetrical openings. Parts of the guides are pressed into openings in the holder of the lower die, ensuring displacement of the holder of the upper die therealong. Anti-friction plates have a U-shaped cross section and surround inclined planes of the holders of the upper and lower dies. Lateral distributing guides surround lateral sections of the anti-friction plates and are in movable contact therewith at the edge sections.

Description

FOUR-BOIL FORGING DEVICE

Technical field

The invention relates to the field of metal forming, in particular to four-sided forging devices and can be used for forging ingots and billets of various steels and alloys on hydraulic forging presses.

The invention can be used in the engineering and metallurgical industries in the manufacture of products with an elongated axis, for example, rods, columns, intermediate shafts, torsion shafts, rolls of rolling mills and the like, as well as in the production of forged billets from ingots and rolled from carbon, medium alloyed, tool and high alloy steels and alloys, as well as non-ferrous metals and alloys.

State of the art

The four-side forging device is known from the prior art, consisting of two holders of the upper and lower strikers with inclined surfaces, kinematically, with the help of guides - links associated with them of two holders side strikers with inclined surfaces corresponding to the inclined surfaces of the upper and lower holders and four strikers attached to the respective holders (1).

The disadvantage of this four-sided forging device is that its design does not provide high reliability and durability of the device, as well as the accuracy of the resulting products and forgings.

A four-sided forging device is also known, comprising two holders of the upper and lower strikers with inclined planes, two holders of the side strikers with inclined planes corresponding to the inclined planes of the holders of the upper and lower strikers, kinematically connected with the said holders of the upper and lower strikers using eight lateral guide rails , centering guides with the ability to center the holders of the strikers, anti-friction plates mounted on the inclined planes of the holder her fights and four fights (2).

A disadvantage of the known forging device is that its design does not provide high productivity in the process of manufacturing workpieces or products, the production of which requires a quick change of the tool with the withdrawal of the four-flange forging device from the forging zone, and, if necessary, its subsequent return to the working area of the press. This is due to the fact that the device requires rigid fastening of the holder of the upper striker to the moving part of the press (upper traverse or upper striker) and rigid mounting of the holder of the lower striker to the press table. To remove the device from the working area of the press, you need to disconnect it from the upper movable part of the press, which takes a lot of time. Also, a lot of time is required to install the device in the working area of the press.

Technical result

The basis of the invention is the task, by changing the design of the forging device, to reduce the time to remove the device from the working area of the press and the time to install it in the working area of the press and, due to this, to increase the productivity of the process.

SUMMARY OF THE INVENTION

This object is achieved in that in a four-side forging device containing two holders of the upper and lower strikers with inclined planes, two holders of the side strikers with inclined planes corresponding to the inclined planes of the holders of the upper and lower strikers kinematically connected with the said holders of the upper and lower strikers with using eight lateral guide rails, centering guides with the possibility of centering the striker holders, anti-friction plates mounted on the inclined planes of the striker holders and four strikers, the new fact is that the holders of the upper and lower strikers, on the back of each of their inclined planes, have tides with three holes symmetrically located relative to the longitudinal plane of symmetry of the device and coinciding in the holders of the upper and lower strikers, one of which is located on and the longitudinal plane of symmetry of the device, and the other two symmetrically, on both sides, relative to this plane of symmetry, springs are installed in the holes located along the axis of the longitudinal plane of symmetry of the device, with the possibility of vertical movement of the holder of the upper striker relative to the holder of the lower striker, and centering guides are installed in holes symmetrically on both sides relative to the longitudinal plane of symmetry of the device, portions of which are pressed into the holes of the holder He pin, with the possibility of vertical movement in guides of the upper pin holder, frictional plate mounted on inclined planes holders of lower and upper pins are U-shaped in cross section and cover holders inclined planes of the upper and lower strikers, and the inclined planes of the holders of the side strikers are limited by the rectangular side walls of these holders, covering antifriction plates mounted on the holders of the upper and lower strikers, while the side guiding rails are fixedly mounted on the rectangular side walls of the holders of the side strikers so that they cover the side sections of the antifriction plates with the possibility of movable contact on the edge sections of the planes of these plates located on the sides opposite to the antifriction planes plates, on which the inclined planes of the side striker holders are in contact.

The task is also achieved by the fact that the device is equipped with a lubricant supply system on the anti-friction plates.

The task is also achieved by the fact that the device is equipped with a water cooling system for strikers and holders of strikers.

Patented four-sided forging device is illustrated by drawings (Fig.1-6).

Figure 1 shows a four-side forging device in a static state, front view (in the closed position - the left side of the figure and in the open position - the right side of the figure); figure 2 is a side view; Fig. 3 is a plan view; in FIG. - section aa in figure 1; Fig. 5 - four-sided forging device in a perspective view; figure 6 - four-side forging device for crimping the workpiece (the cross section of the workpiece is shaded at the time of compression).

The four-side forging device consists of the holder of the upper striker 1, the holder of the lower striker 2 mounted on the press table (not shown in Fig.), Two holders of the side strikers 3.4, eight side distributing guides 5-8, with the help of which the kinematic connection of the holders is ensured side strikers with holders of the upper and lower strikers, upper striker 9, lower striker 10, side strikers 1 1, 12, four centering guides 13-16 (Figs. 1-5). The holders of the upper and lower strikers 1, 2 have inclined planes corresponding to the inclined planes of the holders of the side strikers 3.4. The holders of the upper and lower strikers 1, 2, on the reverse side of each of its inclined planes, have tides 17-20 with three holes 21-23, 24-26 symmetrically located relative to the longitudinal plane of symmetry of the device "0 - 0" and coinciding in the holders upper and lower strikers. One of the holes (22 or 25), on each side of the device, is located along the axis of the longitudinal plane of symmetry of the device, and the other two (21, 23 or 24, 26) are symmetrically, on both sides, relative to this plane of symmetry. In the holes 22 and 25 located along the axis of the longitudinal plane of symmetry of the device "0 - 0", springs 27 are installed with the possibility of vertical movement of the holder of the upper striker 1 relative to the holder of the lower striker 2. The centering guides 13-16, made in the form of columns, are installed in holes 21, 23, 24, 26 located symmetrically on both sides relative to the longitudinal plane of symmetry of the device “0 - 0“. Moreover, the sections of these guides - columns 13-16 are pressed into the holes 21, 23, 24 and 26 of the holder of the lower striker 2, with the possibility of vertical movement in these guides of the holder of the upper striker 1. On the inclined planes of the holders of the upper and lower strikers 1, 2, antifriction plates 28 are installed having a U-shaped cross section (Figs. 1, 4,5). Antifriction plates 28, usually made of bronze, and cover the inclined planes of the holders of the upper and lower strikers 1, 2. The inclined planes of the holders of the side strikers 3, 4 are limited by the rectangular side walls of these holders, covering the antifriction plates 28. The lateral guide rails 5-8 are fixedly fixed on the rectangular side walls of the holders of the side strikers 3, 4 so that they cover the side sections of the antifriction plates 28 with the possibility of movable contact on the edge sections of the planes et x antifriction plate on which the inclined plane contact holders lateral pins 3, 4.

The four-forging device can also be equipped with a lubrication system for anti-friction plates and water cooling system for strikers and strikers holders (not shown in FIG.).

Four-sided forging device operates as follows.

The device is installed in the working area of a hydraulic forging press under its upper flat head (not shown in Fig.). In this case, the holder of the upper striker 1 does not have fasteners on the moving parts of the press. At the same time, the holder of the lower striker 2 is rigidly fixed on the movable table of the press (not shown in Fig.). During the course of the upper striker of the press up (not shown in FIG.), Under the action of the springs 27, the holder of the upper striker 1 together with the upper striker 9 moves up, and at the same time, with the help of the side distributing guides 5-8, raises the holders of the side strikers 3, 4 together with side strikers 1 1, 12, opening the working space of the device (Fig L, 5).

The process of breeding strikers 9, 1 1, 12 is as follows. The movement of the holders of the side strikers 3, 4 along the antifriction plates 28 upward and to the sides is ensured by the coverage of the side distributing guides of 5-8 antifriction plates having a U-shaped cross section. Side distributing guides 5-8 are fixed on the rectangular side walls of the holders of the side strikers 3, 4 with bolts and brought under the edge sections of the antifriction plates 28. During application to the holders lateral strikers 3, 4 of vertical force (from the springs 27), tending to raise these holders, through the lateral distributing guides 5-8, this force is transmitted to the edge sections of the planes of the antifriction plates 28 located on the sides opposite to the planes of the antifriction plates, on which the inclined the plane of the holders of the side strikers 3, 4. Due to the location of the antifriction plates at an angle, mainly 45 °, to the vertical plane of symmetry, the device "C - C", the forces acting from the side of the guide rails x 5-8, provide movement of the holders of the side strikers 3, 4 along the anti-friction plates up and to the sides.

After the strikers are divorced, the workpiece (not shown) is fed into the workspace by a manipulator. Then, the working stroke of the press is switched on, in which its movable crosshead through the upper flat striker (not shown in Fig.) Moves the holder of the upper striker 1 together with the upper striker 9 towards the workpiece. At the same time, the holders of the side strikers 3, 4 together with the side strikers 1 1, 12 also move towards the workpiece. All three movable strikers (9, 1 1, 12) and the lower stationary striker 10 begin to simultaneously compress the workpiece (Fig.6). After crimping the workpiece, the movable crosshead of the press with the upper flat striker of the press moves up, the holder of the upper striker 1 under the action of the springs 27 also rises up, opening the working space of the device for longitudinal movement and / or rotation of the workpiece around the axis, after which the crimping cycle is repeated. To withdraw the device from the working area of the press, it is only necessary to raise the upper crosshead of the press, thereby creating a small gap (10-200 mm) between the working surface of the upper flat die of the press and the holder of the upper die, and then remove the entire device from the working area of the press. The device can be located on the press tool table near the working area, and at the same time, another tool can be installed in the press working area and continue working on the press using this new tool. If necessary, you can also quickly bring a four-gang forging device into the working area of the press. The time to withdraw the device from the working area of the press is 1-3 minutes. The same amount of time is required to install the device in the working area of the press. When using the device according to the patent adopted as a prototype, the time for removing the device from the working area of the press is 20-30 minutes, and for its installation - 15-20 minutes.

Thus, the proposed design of the device provides a significant reduction in the time taken to remove the device from the working area of the press and to install it in the working area of the press, thereby increasing the productivity of the process. Information sources:

Japanese Application N ° 58-12088, IPC B21 J 9/06, 9/02, 13/02, 2007

RF patent N ° 23 14175, IPC B21 J 13/02, 2005

Claims

CLAIM

1. Four-sided forging device containing two holders of the upper and lower strikers with inclined planes, two holders of the side strikers with inclined planes corresponding to the inclined planes of the holders of the upper and lower strikers, kinematically connected with the said holders of the upper and lower strikers using eight lateral guide rails, centering guides with the possibility of centering the strikers holders, anti-friction plates mounted on the inclined planes of the strikers holders and a dash of strikers, characterized in that the holders of the upper and lower strikers, on the back of each of their inclined planes, have tides with three holes symmetrically located relative to the longitudinal plane of symmetry of the device and coinciding in the holders of the upper and lower strikers, one of which is located along the longitudinal axis the symmetry plane of the device, and the other two symmetrically, on two sides, relative to this plane of symmetry, in the holes located along the axis of the longitudinal plane of symmetry of the device, set Lena spring, with the possibility of vertical movement of the holder of the upper striker relative to the holder of the lower striker, and centering guides are installed in holes symmetrically on both sides relative to the longitudinal plane of symmetry of the device, portions of which are pressed into the holes of the holder of the lower striker, with the possibility of vertical movement in these guides of the holder of the upper striker, antifriction plates mounted on the inclined planes of the holders of the lower and upper strikers U-shaped cross section and cover the inclined planes of the holders of the upper and lower strikers, and the inclined planes d the side strikers are limited by the rectangular side walls of these holders, covering antifriction plates mounted on the holders of the upper and lower strikers, while the side guides are fixedly mounted on the rectangular side walls of the holders of the side strikers so that they cover the side sections of the antifriction plates with the possibility of movable contact on the edge sections of the planes of these plates located on the sides opposite to the planes of the antifriction plates along which the contact dissolved ramps lateral die holders.

2. Four-sided forging device according to claim 1, characterized in that the device is equipped with a lubrication system for antifriction plates.

3. The four-forging forging device according to claim 1, characterized in that the device is equipped with a water cooling system for the strikers and the holders of the strikers.