DE833146C - Divisible roller bearing, especially for crankshafts - Google Patents

Description

Divisible roller bearings, especially for crankshafts For relocation The most common design of crankshafts is regrinding of all crankshafts and bearing journals are usually indispensable. To partially prevent this and especially Rolling bearings on crankshafts have already been used to improve the running properties achieved through divisibility of the crankshafts. Crankshafts have also been designed in such a way that that the bearing rings or connecting rods could be slipped over the crankshafts. roller bearing with radially divisible races have been proposed, their use on crankshafts however, required conditions which were associated with difficulties, or which Manufacturing was unprofitable.

With the present invention, a new bearing of the crankshafts in simple workshops have become possible in a very short time. Special professionals as well Machines are no longer needed. The crankshafts no longer need to be reground to become.

The present invention relates to a roller bearing with radially divisible Races whose tight fit is guaranteed despite the narrowest journal width. The novel production is also quite simple. In the case of a new storage, interior and the outer race and rolling elements have been replaced. This leaves wear and tear on the replaceable bearings, limited. The hardening of the crankshaft journals falls path. The use of split, easily exchangeable, complete roller bearings is avoided the tedious fitting of the plain bearings and saves a considerable amount of time the repair; the operating time is extended and the reliability also with intermittent lubrication increased. The replacement of the bearings' can be of simple Locksmiths are made. The present Execution of this Storage can be applied well to the narrow bearing journals and the crankshaft does not require any special design.

The drawings illustrate, for example, a divisible rolling bearing for crankshafts according to the invention.

Fig. I to 3 show the inner race with side rims, namely Fig. I in half-section-half-view representation, A'bb. 2 the side view and Fig. 3 the top view. The inner race i is formed by ring thirds, which are formed by the side rim halves 2, which are connected by screws 3.

Fig. 4 and 5 illustrate the three-part set in the connecting rod 5 Outer race 4. Screws 6 connect the split connecting rod foot 5. Fig.4 is the Side view, Fig. 5 is a half section and half elevation view.

Fig. 6 shows the section through the assembled bearing on the crank pin. The three-part inner race i is secured by the screwed side rims 2 on the crank pin 8 held. The side rims 2 receive their axial distance through contact with the side surfaces of the crank pin B. The lugs to be screwed on the side rims 2 are located on both sides of the crank webs 9. The outer race 4 is held in the connecting rod foot 5. Between Inner race i and outer race 4 are the rollers 7.

Fig. 7 to i i show different designs of the races and rollers.

In Fig. 7 the outer race 4 is opposed by guide ring halves io lateral displacement specially secured.

In Fig. 8 the design is characterized by two rows of rollers 7, which are separated by intermediate rim halves i i mounted on ring 4 in the outer], which axially occurring forces over the rollers. 7 to the side rims 2.

In Fig. 9, the outer race 4 is still io by guide ring halves secured in the connecting rod 5 against lateral displacement.

Fig. Io avoids the strong weakening of the outer race 4, as this occurs in Fig. 9 between guide ring io and intermediate flange i i by the guide ring is offset to the side.

In Fig. I i, the intermediate rim halves i i are held in the connecting rod foot 5, whereby the outer race 4 is divided in its width.

The installation and removal of the bearings does not cause any difficulties.

The abutting edges are preferably inclined to the axis of rotation of the rollers designed, which means that no additional work is required in the novel production.

The manufacture of these bearings is novel. The raw material form is For almost all parts drawn sheet steel or drawn steel strip or the like. Also the Race parts are cut from the steel strip in their extended length and then bent in the die, which not only results in cheap production, but also, what is particularly important, improved resistance of the material especially at the joint edges due to the even grain in the direction of movement the rolling element is reached. The radii of the raceway parts are not clamped together Shape, but each ring part for itself, z. B. on magnetic mandrels or in magnetic Bushes clamped, machined; when grinding the outer radii, the ring parts are z. B. held on a magnetic mandrel, when grinding the inner radii z. B. in a magnetic socket. On the side board halves are after the shape is punched out, the punched in the die or sawn off the profile connecting lugs expediently applied by an electrical welding or soldering process. Furthermore the known working methods are used.

Claims (4)

PATENT CLAIMS: i. Divisible roller bearing, in particular for crankshafts, characterized in that the divisible inner race (i) is enclosed by the inner race (i), halved side rims (2) which provide a tight fit, the connecting points of which are used for screwing and do not influence the width of the bearing journals, but rather on both sides of the crank webs (9) are arranged. 2. The manufacture of the Race parts of divisible rolling bearings, especially for crankshafts, marked by achieving an uninterrupted material fiber course in the direction of movement the rolling elements by bending sheet metal (steel band) strips or the like in the die taking into account that the direction in which the sheet metal (steel strip) o. was rolled, - is the same as the direction of movement of the rollers. 3. Rolling bearings according to Claim i or 2, characterized by divided guide rings (io). 4. Rolling bearing according to claim i or 2, characterized in that split intermediate flange rings (ii) are attached in the outer ring (4).