SU929281A1 - Apparatus for producing articles by spinning - Google Patents

Description

(5) DEVICE FOR MANUFACTURING PRODUCTS BY WRINKING

I

The invention relates to the field of metal forming, more specifically to devices for making products by rolling.

It is known a device for making articles by rolling containing a tool holder with a spherical bearing surface located on the basis of an oscillatory motion drive connected to an eccentric shaft tl.

The closest in technical essence to the invention is a device comprising a tool holder in the form of a disk with an annular disk mounted in supports. groove on the lateral outer surface with cantilever eccentric shafts placed on spherical bearings 2.

The disadvantages of this device are its considerable size in terms of the radial arrangement of the electric motor mounted on the housing, which makes it difficult to place the device on presses with a small working space, the device does not work reliably due to the possible misalignment of the eccentric shafts operation as well as the starting time and during operation of the device, as well as due to the rapid wear of the outer rings of spherical bearings and the annular groove of the tool holder due to the linear contact between them.

The purpose of the invention is an increase in reliability and a reduction in the overall dimensions of the device.

Claims (1)

This chain is achieved by the fact that in a device containing a tool holder in the form of a disk base mounted with spherical supports with an annular groove on the lateral outer surface with eccentric shafts placed in it on spherical bearings, the sequence is parallel and 39 are kinematically connected, while the eccentric shafts located diagonally, rotated relative to each other by 180. FIG. 1 shows a diagram of the proposed device, a longitudinal section; FIG. 2 is a section A-A in FIG. 1. The device includes a housing 1, on spherical support bearings 2 and 3 of which the instrumental holder is installed, made in the form of a disk with an outer ring groove in which the sliders are placed 5. In the sliders there are two spherical ball bearings 6 mounted on the eccentric shafts 7. The shafts have two eccentrics, each turned 90 ° relative to each other. The eccentric shafts are mounted in bearings 8 and are connected to each other by a mechanical gear 9 (for example, a chain), closed by a protective casing 10. At the same time, the kinematic connection between the shafts is made in such a way that the eccentric shafts located diagonally are turned relative to each other on 180. A replaceable guide bar 12 is placed in the housing cover 11, which serves to guide the workpiece 13 before pushing it by the punch 14 through the H-15 matrix, and also to press the ball bearing surface spherical under the bore pin 3 stress. An electric motor 16 (one or two) is used to drive the eccentric shafts. The device works as follows. When the motor 1 is turned on, the eccentric shafts 7, with the participation of the mechanical transmission 9, are rotated. The eccentrics of the shafts J are turned 90 ° relative to each other, through the bearings 6 they act on the sliders 5, which alternately move upwards - inward and act on the toolholder k. Since the eccentrics of the shafts located diagonally, due to the kinematic connection between the shafts, are rotated 180 °, the joint influence of all eccentrics on the sliders, and the latter on the tool holder, occurs in a strictly defined sequence. As a result of this, the tool holder, and therefore the die 15, receives a circular running motion. The angle of inclination of the tool in is determined by the dimensions of the eccentrics. The punch k, moving downwards, acts on the workpiece 13, which is located in the guide sleeve 12, and draws it through the die, which performs a circular run-in movement. Thus, since in the proposed device the action on the annular groove of the disk tool holder is carried out by eccentrics with fitted spherical ball bearings through the sliders, the contact of the linear linear pairs becomes flat. In this case, the specific loads on the contact surfaces are reduced. As a result, when operating, the wear of the outer rings of the ball bearings and the tool holder is reduced. Thus, the eccentrics of the shafts operate in a strictly defined sequence, which is not disturbed both at the time of start-up and during installation operation, which leads to an increase in the reliability of the device. At the same time, in the proposed scheme of the device, it is possible to get by with one or two electric motors, which can be mounted on the device case on the side opposite to the location of the worker. There are no electric motors on the front and side of the device. In the end, this leads to a decrease in the overall dimensions of the device in the plan, which facilitates its placement in the working space of the press. Claiming device for producing articles by rolling containing a tool holder in the form of a disk mounted in spherical bearings with an annular groove on a lateral outer surface in which eccentric shafts are placed on spherical bearings, in order to increase reliability and reduce the overall dimensions of the device eccentric shafts the shafts are parallel and kinematically connected, with the eccentrics of the shafts located diagonally. 5 deployed one relative to the other by 180 °. Sources of information taken into account during the examination 929281 “1. USSR author's certificate No. 310719, .kl. B21 D 37 / 12.2. USSR authorship certificate No. 502b 8, class, B21. About 32/12. -.1 f. FIG. 2