DE2327468A1 - ROLLER GUIDE, IN PARTICULAR FOR FAST-RUNNING ROLLED MATERIAL - Google Patents

Description

CRASEMANN Λ RAFFAY ^ν *

2 HAMBURG 7O

SGHLOSSTRASSEe PATENTANWÄLTE:

May 29, 1973

DIPUrINa ₁ JDRGENCRASEMANN DIPPING. VINOENZ V. RAFFAY

Our file: 3016/31 v.R./Ro.

Applicant: Morgardshammar Aktiebolag
Smedjebacken / Sweden

Roller guide, especially for rolling stock that is running at high speed.

The invention relates to a roller guide for tendons Rolled stock, the guide roller being formed by an impeller, the inner surface of which is conical on both sides. A roller guide has two guide rollers in each case.

Roller guides of the type mentioned above are known in principle.

Modern bar and wire mills roll the material to be rolled with one Final speed of about 25 - 30 m / sec. It is therefore extremely important that the rolling stock when it enters the Roll gap of the finishing train is precisely aligned both in the vertical and in the lateral direction, otherwise the There is a risk that the rolling stock will be turned into scrap. For this reason there are usually guides for the rolling stock attached in front of the roll gap. When rolling at high speeds and especially with high requirements in terms of In terms of quality, these guides are so-called roller guides, i.e. the precision surfaces consist of rotatable bearings Guide rollers of appropriate construction. .

These guide rollers are exposed to high levels of stress. They also tend to wear out accordingly. To reduce this wear, there is an impeller or

309851/0400

TELEPHONE: CO411J OS 7O OO TELEGRAMS: PATFAV, HAMBURG

the impeller surface is made of sintered metal. Sintered metal is an extremely expensive material, so it is desirable to construct the impeller or tread so that as little material as possible is required, but at the same time it is ensured that the high loads are absorbed and be endured. In this context it is necessary that the impeller has a minimum thickness.

The invention is now based on the object of providing a roller guide of the type mentioned above, taking into account the above to create the difficulties described.

This object is achieved in that the guide roller, which is mounted on a fixed cylindrical shaft, has two has rotatable bearing parts truncated conical shape, the end faces of which are opposite each other with a smaller diameter and that the inner surface of the impeller, which is fixed to the bearing parts, in correspondence with the bevel is shaped from both sides (double cone).

This creates a solid and inexpensive construction. Conditional due to the conical shape of the inner surface of the impeller, the load is balanced so that the bearing pressure is well distributed, thereby avoiding the risk of cracks and cracks in the sintered metal impeller.

In addition to the advantage that less material is required, the impeller is cheaper to manufacture because of the requirements the precision in the manufacture of the conical surfaces is less than that of cylindrical surfaces.

Further advantages and details of the invention are described below with reference to the drawing using an exemplary embodiment explained in more detail.

30 * 8 $ 1/0400

2327458

It shows:

Pig. 1 shows a section through an embodiment of a Roller guide according to the invention;

2 shows a distribution of the pressure forces in a guide roller; and ■

3 shows a distribution of the pressure forces in a guide roller which does not correspond to the present invention.

In the embodiment according to FIG. 1, the guide roller is 1 mounted on a stationary shaft 2 with the help of bearing parts 3 which are frustoconical. the The shaft is fastened in a roller holder 4. A ring 5 is clamped between the bearing parts 3 and provided with corresponding bearing surfaces (not shown).

The guide roller is supplied by a drive means and a lubricant rotated through a passage 6 in the reel mount and through the passages 7 and 8 in shaft 2. Since the drive and the lubrication are not the subject of the present invention, they are not shown and described in detail. The drive means that has flowed through the turbine wheel 5, exits again through passages 9.

The axial bearing is provided with circular disks 10.

The running wheel 11 of each guide roller is conical on both sides on its inside, the cone angle corresponding to that corresponds to the bearing parts 3.

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As can be seen from FIG. 2, the pressure force distribution is in the impeller 11 evenly, due to the double conicity the inner surface.

In Fig. 3, an impeller 12 is illustrated, which is not after the teaching of the invention is formed. The pressure force distribution in this impeller is not uniform, so that breaks and cracks can easily occur as illustrated at 13.

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Claims (1)

Claim: Roller guide, in particular for high-speed rolling stock, whereby the running wheel of the guide roller is conical on both sides on its inner surface, characterized in that, that the guide roller (1), which is mounted on a fixed cylindrical shaft (2), has two rotatably mounted bearing parts (3) which are frustoconical, wherein the end faces of the smaller diameter are opposite one another and that the inner surface of the impeller (11), which is attached to the bearing parts (3), is formed conically on both sides in a corresponding manner. 309851/0400 Blank page