DE675607C

DE675607C - Method of manufacturing flanged bearing shells

Info

Publication number: DE675607C
Application number: DEG91904D
Authority: DE
Original assignee: Motors Liquidation Co
Current assignee: Motors Liquidation Co
Priority date: 1935-05-22
Filing date: 1936-01-09
Publication date: 1939-05-12

Description

Die Erfindung richtet sich auf ein Verfahren zum Herstellen geflanschter Lagerschalen aus flachen Streifen mit einer Auskleidung in Gestalt einer ,angegossenen oder angeschweißten Schicht plastischer Bronze, die in der Hauptsache aus Kupfer und Blei mit kleinen Mengen anderer Zusätze besteht. Derartige Lager mit einer stützenden Unterlage aus Stahl oder einem ähnlichen festen Stoff bewähren sich vorzüglich für Luftfahrzeuge, Kraftwagen u. dgl., wo die Geschwindigkeiten ungewöhnlich hoch und die Lager besonders hohen Belastungen ausgesetzt sind. Für die Bildung seitlicher Flansche werden die mit der Bronze ausgekleideten Streifen an ihren Seitenkanten rechtwinklig umgebogen und die so geflanschten kanalartigen Streifen ihrer Länge nach in Halbkreisform gestaltet. Nun ist die plastische Bronze zwar ein ausgezeichnetes Lagermaterial, aber es neigt zur Brüchigkeit, und deshalb könnte die Schicht aus plastischer Bronze beim Biegen der Seiten des Ausgangsstreifens, also bei der zweiten Herstellungsstufe, leicht Sprünge erhalten, nämlich dort, wo . die Flansche umgebogen werden. Um diesem Übelstand abzuhelfen, besteht das Wesen der Erfindung in erster Reihe darin, daß die sich aus Herstellungsgründen auf die gesamte Streifenfläche erstreckende Bronzeauskleidung längs den Streifenenden entfernt, erst hierauf die Streifen dort, wo sie von der Auskleidung frei sind, rechtwinklig umgebogen und zur Halbzylinderform gestaltet werden.The invention is directed to a method of manufacturing flanged bearing shells of flat strips with a lining in the form of a, cast or welded layer of plastic bronze, which is mainly made of copper and lead with small amounts of other additives. Such bearings with a supporting pad made of steel or a similar solid material are ideal for aircraft, Motor vehicles and the like, where the speeds are unusually high and the bearings are exposed to particularly high loads. The strips lined with bronze are used to form side flanges bent at right angles on their side edges and the channel-like flanged in this way Strips designed in a semicircular shape along their length. Now is the plastic bronze An excellent storage material, but it tends to be fragile and therefore could the layer of plastic bronze when bending the sides of the starting strip, that is in the second stage of manufacture, cracks easily received, namely where. the Flanges are bent. To remedy this evil, there is the essence of Invention primarily in the fact that the manufacturing reasons on the entire Removed the bronze lining extending along the strip ends, only then the strips where they are free from the lining, bent over at right angles and to the Semi-cylindrical shape can be designed.

Haben solche Lager axiale Beanspruchungen erheblicher Art auszuhalten, so empfiehlt sich, bei der Beseitigung der · Auskleidung Ringe der plastischen Bronze an den Seitenflahschen stehenzulassen.If such bearings have to withstand considerable axial loads, it is recommended when removing the · lining rings of plastic bronze on the side brackets let stand.

Die Erfindung ist in der Zeichnung in zwei Ausführungen beispielsweise veranschaulicht; es sindThe invention is illustrated in the drawing in two embodiments, for example; there are

Fig. ι Schaubild des geflanschten kanalförmigen Ausgangsstreifens, aus dem die in Fig. 2 abgebildete Lagerschale geformt wird,Fig. Ι diagram of the flanged channel-shaped Starting strip from which the bearing shell shown in Fig. 2 is formed,

Fig. 2 Schaubild einer fertigen Lagerschale, die aus dem Streifen nach Fig. 1 gefertigt ist,FIG. 2 is a diagram of a finished bearing shell made from the strip according to FIG. 1,

Fig. 3 Schaubild einer anderen Ausführungsform der Lagerschale,3 is a diagram of another embodiment of the bearing shell,

Fig. 4 Ansicht des Ausgangsstreifens gemaß Fig. ι vor dem Biegen der Seitenflansche, Fig. 4 is a view of the starting strip according to Fig. Ι before the bending of the side flanges,

Fig. 5 Schaubild des Ausgangsstreifens vor dem Biegen der Seitenflansche für eine Schale gemäß Fig. 3. 5£Figure 5 is a diagram of the exit strip prior to bending the side flanges for a Shell according to Fig. 3. 5 £

Der zum Herstellen der Lagerschale dienende Ausgangsstreifen besteht gemäß Fig. 1 aus einem ursprünglich flachen Streifen 5The starting strip used to produce the bearing shell is made according to FIG. 1 from an originally flat strip 5

Claims

made of steel or an equivalent material, which forms the supporting backing 6 of the finished bearing shell and gives it the required strength. The side edges of this strip are bent at right angles at 7, whereby the side flanges 8 are formed in the finished shell according to FIG. This output strip is, b _; Before the flanges 8 are formed, they are flat throughout. On it, a thin bearing layer 10 made of plastic bronze is cast or welded onto one of its surfaces, so that the cast-on layer is inseparable from the backing and forms its unit with it. Such a strip before the flanges are bent is drawn in elevation in FIG. Before the flanges 8 are bent at right angles, there are narrow longitudinal strips, the bearing layer of plastic bronze

2ü removed near the side edges, making Grooves 11 arise near the edges. These grooves are arranged with respect to the finished bearing shell that they, if the sides of the flat strip at 7 (Fig. 1) for making the side flanges 8 of the finished shell to be bent, no plastic bronze in the longitudinal direction of that Zones included where the side flanges in the backing 6 pass over. These areas, freed from plastic bronze, are 12 in Fig. 2 denotes. . ■ ■

The originally flat, then flanged or channel-like one drawn in FIG. 1 Strip is bent into the semi-cylindrical shape of the bearing shell shown in FIG. The warehouse then still needs the usual finishing. The drawn Bearing Clralen have projections 13, the one To prevent twisting of the bowls in their seats.

The manufacture of the bearing shells with the rings 14 of plastic bronze on the radially 'extending side flanges of the finished bearing is recommended when the Bearings have to withstand axial loads of considerable size. In the case of one strip the bearing shell of FIG. 3 produced in FIG. 5 is on the other hand the plastic bronze both sides of the middle piece 15 of the cast-on layer completely removed, like is indicated at 16. As a result, the side surface 16 of the flange of the finished Bearing shell does not have a plastic bronze coating.

Pa τεντλ ν s PR ü c H E:

i. Method for producing a bearing shell having flanges flat strips with a lining in the form of a cast or welded on Layer of plastic bronze, characterized in that the lining removed along the side of the strip, then after a right-angled bend the bearing strips where they are free from the lining, shaped into a channel Raw piece, this raw piece is redesigned into the semi-cylindrical shape.

2. The method according to claim 1 for Axial load bearing, characterized in that the elimination of the Lining rings of plastic bronze on the side flanges of the bearing shell leaves standing.

1 sheet of drawings