DE3811719A1 - Inner ring of a bearing, e.g. a supporting joint - Google Patents

Abstract

The invention relates to an inner ring (10) of a bearing, e.g. a supporting joint, the said inner ring being provided with a partially spherical contact surface (11) and cylindrical sections (12) adjoining the latter. The intention is to provide an inner ring (10) which is distinguished by the minimum possible use of materials, low production costs and, at the same time, a saving in weight. This is possible, on the one hand, by virtue of the fact that the inner ring (10) consists overall of a hydraulically or pneumatically expanded formed tube and, on the other hand, by virtue of the fact that the inner ring (10) also consists of the inner ring (14) of a spherical plane bearing pressed into positive engagement with a deformed area of the tube. An inner ring (10) for a bearing produced in this way requires a minimum of materials and can be produced at extremely low cost since all that is required is a corresponding die for the hydraulic or pneumatic expansion of the tube. <IMAGE>

Description

The present invention relates to one with a part-spherical tread and adjoining it cylindrical sections provided inner ring of a La gers, e.g. a support joint.

Inner rings of the aforementioned type are known per se and are used for example in motor vehicle construction as wheel joints needed. But there are also other applications of the well-known ball joints known.

The inner rings previously used for such bearings are made in one piece from a correspondingly thick pipe material machining manufactured.

On the one hand, this means a considerable amount of material rate and, on the other hand, considerable manufacturing costs through machining.

The present invention is based on the object  to create an inner ring of the generic type, the through minimal use of materials and low ferti pricing costs while saving weight net.

This task can be accomplished in two ways.

A solution to this problem is that the inside ring in total from a hydraulic or pneumatic expanded, non-cutting deformed pipe section.

Another solution to the problem is that the Inner ring made up of a hydraulically or pneumatically widened, non-cutting deformed pipe section and a form in a deformed area of the pipe section there is a press-fit inner spherical bearing ring.

Both solutions have the advantage that one of the Art produced inner ring of a bearing only a minimum requires material and that such an interior ring can be produced with extremely low manufacturing costs, because only a corresponding form for hydraulic or pneumatic expansion of the pipe section required becomes.

This applies both in the event that the part-spherical barrel surface by immediate deformation of the corresponding Pipe section or by pressing an inexpensive Spherical bearing inner ring is formed.  

Appropriate further training of the subject of registration is that in the part-spherical tread subsequent cylindrical sections for receiving grooves Seals or the like are pressed in.

Embodiments of the invention are in the accompanying Drawings are shown and are described in more detail below wrote. It shows

Fig. 1 shows a longitudinal section through an inner ring of a bearing according to the Invention

Fig. 2 shows a longitudinal section through the inner ring of a bearing according to a further game Ausführungsbei the invention.

The shown in Fig. 1 and generally provided with the reference 10 inner ring of a bearing, such as a ball joint, is provided with a partially spherical tread and adjoining this tread 11 , cylin drical sections 12 .

The inner ring 10 shown in FIG. 1 is in one piece and consists of a tube section which has been pressed into a corresponding shape by hydraulic or pneumatic expansion, that is to say by non-cutting deformation. The part-spherical tread 11 consists of a directly hydraulically or pneumatically expanded, deformed pipe section.

In the cylindrical sections 12 are receiving grooves 13 for seals or the like. pressed in, so that here, too, no chip-forming deformation is required.

In the embodiment of the invention shown in FIG. 2, the entire inner ring is again identified by the reference numeral 10 .

In this embodiment, the inner ring 10 is made of a hydraulically or pneumatically expanded, non-cutting deformed tube section, in which case the partially spherical tread is formed from a spherical bearing inner ring 14 which is positively pressed into a deformed area of the tube section.

The cylindrical sections 12 are in turn with inserted grooves 13 for seals or the like. fitted.

Both exemplary embodiments have in common that one of the inner ring 10 can be produced with the least use of material and the lowest manufacturing costs while at the same time saving weight.

The inner bore 15 requires in the illustrated Ausfüh approximately examples of the inner rings 10 practically no post-processing, so that with the present invention an overall extremely inexpensive to produce inner ring 10 of a bearing, such as a ball joint, with part-spherical tread 11 is created.

Claims (3)

1. With a part-spherical tread and adjoining cylindrical sections provided inner ring of a bearing, such as a ball joint, characterized in that the inner ring ( 10 ) consists of a hydraulically or pneumatically expanded, non-cutting deformed Rohrab section. 2. With a part-spherical tread and adjoining cylindrical sections provided inner ring of a bearing, such as a ball joint, characterized in that the inner ring ( 10 ) from a hydraulically or pneumatically expanded, non-cutting deformed pipe section and a form-pressed in a deformed area of the pipe section Spherical bearing inner ring ( 14 ). 3. Inner ring according to claim 1 or 2, characterized in that in the part-spherical tread on closing cylindrical portions ( 12 ) receiving grooves ( 13 ) or the like for seals. are pressed in.