DE965862C - Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range - Google Patents

Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range

Info

Publication number
DE965862C
DE965862C DEP455D DEP0000455D DE965862C DE 965862 C DE965862 C DE 965862C DE P455 D DEP455 D DE P455D DE P0000455 D DEP0000455 D DE P0000455D DE 965862 C DE965862 C DE 965862C
Authority
DE
Germany
Prior art keywords
segments
plastic
synthetic resin
diameter range
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEP455D
Other languages
German (de)
Inventor
Dipl-Ing Herbert Hobein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pag Presswerk AG
Original Assignee
Pag Presswerk AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pag Presswerk AG filed Critical Pag Presswerk AG
Priority to DEP455D priority Critical patent/DE965862C/en
Application granted granted Critical
Publication of DE965862C publication Critical patent/DE965862C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/20Sliding surface consisting mainly of plastics
    • F16C33/201Composition of the plastic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Description

Lager aus Kunststoff (Kunstharz), das aus einzelnen, innerhalb eines begrenzten Durchmesserbereiches verwendbaren Segmenten gleicher Ursprungsform zusammengesetzt ist Die Entwicklung der Kunststoff- bzw. Kunstharztechnik hat es möglich gemacht, daß selbst große und schwere Lager (z. B. Walzwerklager) statt aus Metall aus Kunststoff (in der Regel aus Kunstharz mit Füllstoffen, sogenanntem Preßstoff) hergestellt werden können.Bearing made of plastic (synthetic resin), which consists of individual, within a Limited diameter range usable segments composed of the same original shape is The development of plastic and synthetic resin technology has made it possible that even large and heavy bearings (e.g. rolling mill bearings) are made of plastic instead of metal (usually made of synthetic resin with fillers, so-called molding material) can be.

Hierbei ergibt sich jedoch eine Schwierigkeit insofern, als es im Hinblick auf die verschiedenen (gewöhnlich in ziemlich feiner Unterteilung abgestuften) Abmessungen der Lager nötig ist, eine große Zahl von hochwertigen und daher besonders kostspieligen Formen bereitzuhalten. Die Anfertigung dieser Formen ist jedoch erst bei einer bestimmten Stückzahl lohnend, so daß bei kleineren Stückzahlen die Lager aus gepreßten Platten od. dgl. mechanisch herausgearbeitet werden müssen. Abgesehen von dem Aufwand an Arbeitszeit ist bei dieser Art der Fertigung mit erheblichen Verlusten an Werkstoff zu rechnen, der einschließlich Schnitt- und Besäumverlusten mindestens durchschnittlich 30 % beträgt.However, there is a problem in that it is in With regard to the various (usually graded in rather fine subdivisions) Dimensions of the bearing is necessary, a large number of high-quality and therefore special to have expensive forms ready. However, these forms are only just being made With a certain number of items it is worthwhile, so that with smaller numbers of items the warehouse Must be worked out mechanically from pressed plates or the like. Apart from that the amount of work required in this type of production is considerable Expect material losses, including cutting and trimming losses at least an average of 30%.

Man hat Lager aus Kunststoff auch bereits aus einzelnen Segmenten zusammengesetzt und diese Segmente aus Stäben herausgearbeitet und innerhalb eines bestimmten Bereiches des Lagerdurchmessers hierfür Stäbe gleicher Ursprungsform verwendet, die durch Formpressen hergestellt waren und nach dem Formpressen innen und außen auf den vorgeschriebenen Durchmesser abgedreht wurden. Damit ist aber nicht nur ein großer Materialverlust verbunden, sondern es wurden vor allem die Gewebeeinlagen an der Innen- und Außenseite der Lagersegmente zerschnitten und dadurch die Haltbarkeit und Festigkeit des Lagers vermindert.You already have bearings made of plastic from individual segments assembled and these segments carved out of rods and within a certain area of the bearing diameter for this purpose rods of the same original shape used, which were made by compression molding and after Compression presses inside and outside were turned to the prescribed diameter. However, this is not only associated with a large loss of material, it has also occurred especially the fabric inlays cut up on the inside and outside of the bearing segments and thereby reduces the durability and strength of the bearing.

Die Erfindung vermeidet diese Nachteile dadurch, daß für Lager aus Kunststoff (Kunstharz), die aus einzelnen, innerhalb eines begrenzten Durchmesserbereichs verwendbaren Segmenten gleicher Ursprungsform zusammengesetzt sind, an ihrer Innen- und Außenfläche vorgeformte Segmente verwendet werden, deren Durchmesser auf der Innen- und Außenseite so gewählt ist; daß er innerhalb des Durchmesserbereiches liegt, in dem die Segmente verwendet werden sollen, so daß diese Segmente im Normalfall in an sich bekannter Weise nur an ihren Stoßflächen zu bearbeiten sind, und zwar so weit, daß sie nach der Zusammensetzung sämtlich zur Anlage an den Lagerzapfen kommen, der das selbsttätige Einlaufen der Innenfläche der Lagersegmente bewirkt, und daß die am Außen- und Innendurchmesser vorgeformten Segmente lediglich bei besonders hohen Belastungen nur im Bereich des Übergangs von einer Stufe zur anderen einer geringen Nacharbeit bedürfen.The invention avoids these disadvantages in that it is made for bearings Plastic (synthetic resin) made up of individual, within a limited range of diameters usable segments of the same original shape are composed, at their inner and outer surface preformed segments are used, the diameter of which on the Inside and outside is chosen; that it is within the diameter range in which the segments are to be used, so that these segments are normally are to be processed in a manner known per se only on their abutment surfaces, namely so far that, after assembly, they all come to rest on the bearing pin come, which causes the automatic running-in of the inner surface of the bearing segments, and that the segments preformed on the outer and inner diameter only in particular high loads only in the area of the transition from one level to another require little rework.

Handelt es sich z. B. um Lager von 25o bis 650 mm Durchmesser, so kann man im Sinne der Erfindung etwa vier Abstufungen wie folgt vornehmen I. Stufe .............. 25o bis 300 mm 2. Stufe .............. 3oo bis 375 mm 3. Stufe ... . .......... 375 bis 500 mm 4. Stufe .............. 5oo bis 65o mm Zu jeder dieser vier Stufen, die natürlich nur als Beispiel zu gelten haben, gehört lediglich ein einziges »Einheitssegment«, das grundsätzlich für alle Lager dieser Stufe brauchbar ist. E s liegt auf der Hand, daß durch die Erfindung die Wirtschaftlichkeit in der Erzeugung von Lagern aus Kunststoff (insbesondere Kunstharzpreßstoff) ganz wesentlich erhöht wird, und zwar einerseits durch Einsparung zahlreicher kostspieliger Preßformen, andererseits durch Einsparung des bei der mechanischen Bearbeitung auftretenden Werkstoffverlustes und der Zerspanungsarbeit. Ein weiterer bedeutsamer Vorteil des Lagers nach der Erfindung besteht darin, daß bei ihm die Gewebebahnen an der Innen- und Außenseite der Lagersegmente ununterbrochen fortlaufen, was für die Haltbarkeit und Festigkeit des Lagers von erheblicher Bedeutung ist.Is it z. B. to bearings from 25o to 650 mm in diameter, so one can undertake about four gradations as follows in the context of the invention: 1st stage .............. 25o to 300 mm 2nd stage .............. 3oo to 375 mm 3rd stage ... . .......... 375 to 500 mm 4th level .............. 5oo to 65o mm for each of these four levels, which of course only have to be used as an example, belong only to one the only "unit segment" that can be used in principle for all camps of this level is. It is obvious that the economy in the Production of bearings made of plastic (especially synthetic resin molded material) is essential is increased, on the one hand by saving numerous expensive molds, on the other hand, by saving what occurs during mechanical processing Material loss and the machining work. Another significant benefit of the Bearing according to the invention is that with him the fabric webs on the inner and outside of the bearing segments continue uninterrupted, which is good for durability and strength of the bearing is of considerable importance.

Claims (1)

PATENTANSPRUCH: Lager aus Kunststoff (Kunstharz), das aus einzelnen, innerhalb eines begrenzten DurchmesserbereichsverwendbarenSegmentengleicher Ursprungsform zusammengesetzt ist, dadurch gekennzeichnet, daß an ihrer Innen- und Außenfläche vorgeformte Segmente verwendet sind, deren Durchmesser auf der Innen- und Außenseite so gewählt ist, daß er innerhalb des Durchmesserbereichs liegt, in dem die Segmente verwendet werden sollen, so daß diese Segmente im Normalfall in an sich bekannter Weise nur an ihren Stoßflächen zu bearbeiten sind, und zwar so. weit, daß sie nach der Zusammensetzung sämtlich zur Anlage an den Lagerzapfen kommen, der das selbsttätige Einlaufen der Innenfläche der Lagersegmente bewirkt, und da.ß die am Außen- und Innendurchmesser vorgeformten Segmente lediglich bei besonders hohen Belastungen nur im Bereich des Übergangs von einer Stufe zur anderen einer geringen Nacharbeit bedürfen. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 826 385, 639 5522; Normblatt KM 3381 vom Juli 1944; »Römmler-Buch«, 1938, S. 116, Abschnitt f.Claim: Bearing made of plastic (synthetic resin), which is composed of individual, within a limited diameter range usable segments of the same original shape, characterized in that preformed segments are used on their inner and outer surface, the diameter of which is selected on the inside and outside so that it lies within the diameter range in which the segments are to be used, so that these segments are normally only to be machined on their abutment surfaces in a manner known per se, namely as follows. far that after the assembly they all come to rest on the bearing pin, which causes the inner surface of the bearing segments to run in automatically, and that the segments preformed on the outer and inner diameter only under particularly high loads only in the area of the transition from a step on the other hand require a little rework. Considered publications: German Patent Nos. 826 385, 639 5522; Standard sheet KM 3381 from July 1944; "Römmler-Buch", 1938, p. 116, section f.
DEP455D 1944-07-14 1944-07-14 Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range Expired DE965862C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP455D DE965862C (en) 1944-07-14 1944-07-14 Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP455D DE965862C (en) 1944-07-14 1944-07-14 Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range

Publications (1)

Publication Number Publication Date
DE965862C true DE965862C (en) 1957-06-27

Family

ID=7356637

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP455D Expired DE965862C (en) 1944-07-14 1944-07-14 Bearing made of plastic (synthetic resin), which is composed of individual segments of the same original shape that can be used within a limited diameter range

Country Status (1)

Country Link
DE (1) DE965862C (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639552C (en) * 1934-11-14 1936-12-08 Roemmler Akt Ges H Bearing made from synthetic resin molding
DE826385C (en) * 1944-07-07 1952-01-03 Presswerk A G Bearings, in particular made of synthetic resin with fillers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE639552C (en) * 1934-11-14 1936-12-08 Roemmler Akt Ges H Bearing made from synthetic resin molding
DE826385C (en) * 1944-07-07 1952-01-03 Presswerk A G Bearings, in particular made of synthetic resin with fillers

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