SU1667992A1 - For end spinning by oscillations - Google Patents

Abstract

The invention relates to the processing of metals by pressure, specifically to devices for face rolling of products. The purpose of the invention is to increase productivity and reliability. The bearing surfaces of the plates 6 and 18 of the tool holder 16 are cylindrical. The axes of the bearings 17 and 19 intersect at a 90 ° angle in the center of the swing of the tool holder. When the device operates, due to the constructive implementation of the above elements, the oscillation frequency of the tool holder can be increased. 2 Il.

Description

The invention relates to the field of metal forming and can be used in devices for face rolling.

The purpose of the invention is to increase productivity and increase reliability.

Figure 1 shows the proposed device, the cut; figure 2 is the same, side view.

On the frame 1 in the guides 2 is installed with the possibility of vertical movement of the slider 3 with the housing 4 fixed to it. To the housing 4, equipped with columns 5, is attached a supporting housing plate 6. On the bed 1 the sub-stamp plate 7 is fixedly mounted, on which the sleeves 8 and The matrix 9 is mounted. In the latter, a workpiece 10 is installed. An electric motor (not shown) is connected via a kinematic chain (not shown) to the gear wheel 11 mounted concentricly and the yoke 12, the holes in which are made eccentric and on nnym at the same angle. Gear

the wheel 11 through the bearing 13 contacts with the housing 4, and through the bearing 14 - with the yoke 12. The yoke 12 is mounted on the bearing 15 with the pin of the tool holder 16 seated therein. The tool holder 16, through its radius bearing surface, interacts through the bearings 17 with the movable plate 18, and through bearings 19 with supporting frame plate 6. The supporting surfaces of the movable plate 18 are radially cylindrical, geometrically. whose axes intersect at an angle of 90 °. The movable plate 18 is mounted in the housing 4 in the guide bearings 20. A punch 21 is fixed in the tool holder 16.

The device works as follows.

An electric motor (not shown) transmits the rotational rotation of the gear wheel 11 and the holder 12 through a kinematic chain (not shown). Due to the presence of two degrees free relative to the housing 4, the tool holder 16 receives a definition /

WITH

oh oh

V

N

Lenten view of spatial movement (for example, circular oscillating, tandem, spiral, multi-petal) depending on the ratio of the rotational speeds of the gear wheel 11 and the yoke 12. Punch 21 reproduces this kind of movement on the workpiece 10, creating a corresponding movable deformation center, translational movement of the punch 21 towards the workpiece 10, which provides the working pressure, is communicated by means of the slide 3. The circular oscillating movement of the tool holder 16 is optimal for rolling round parts in plan, the spiral nye - for parts with a developed flange, pottery - for elongated parts, multilobe - for parts such as stars, polygons and shaped parts. During operation of the device, the movable plate 18, under the influence of the tool holder 16, performs a flat swinging movement with respect to the housing 4 in bearings 19 and 20. The presence of radial bearing supports made on the housing plate 6, the movable plate 18 and the tool holder 16 interacting through the bearings 17 and 19, the axes of which intersect at an angle of 90 ° in the center of the tool holder procession 16, creates such conditions that, regardless of the type of spatial movement that is assigned to the punch 21, the intersection point of the vertical The device device and the inclined axis of the tool holder 16 does not change its position and is located on the top of the conical end of the punch 21. At the same time, the tool holder is not rotated.

around its own axis. In one cycle, the swing of the instrument holder 16 of the cage of segmented radial bearings 17 and 19 is rotated by an angle equal to twice the angle of nutation.

The use of the device will increase by 2-3 times the performance compared to the known one by increasing the permissible oscillation frequency of the tool holder, as well as increase the reliability of the device.

Claims (1)

The invention of the device for face rolling by swinging, comprising a housing with a support surface for a tool holder, a tool holder with a support mounted there on swing bearings, a drive for its precessing motion, and also a die, that, in order to increase productivity and increase reliability, it is equipped with segmented radial bearings, as well as a movable plate with a supporting surface installed between the case and a support of the tool holder, the bearing surfaces of the case, the movable plate and tool holder are cylindrical, matching through segment radial bearings, This axis of the latter passes through the center of precession of the tool holder, and the bearings placed between the housing and the movable plate are mounted with the intersection of their axes with the axes of the bearings disposed between the movable plate and the support of the tool, at right angles.