ITUD20130135A1 - METHOD TO REALIZE A CAGE FOR LAMINATION CYLINDER SHOULDER BEARINGS - Google Patents
METHOD TO REALIZE A CAGE FOR LAMINATION CYLINDER SHOULDER BEARINGSInfo
- Publication number
- ITUD20130135A1 ITUD20130135A1 IT000135A ITUD20130135A ITUD20130135A1 IT UD20130135 A1 ITUD20130135 A1 IT UD20130135A1 IT 000135 A IT000135 A IT 000135A IT UD20130135 A ITUD20130135 A IT UD20130135A IT UD20130135 A1 ITUD20130135 A1 IT UD20130135A1
- Authority
- IT
- Italy
- Prior art keywords
- cage
- bearing
- making
- piece
- outer ring
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 28
- 238000003475 lamination Methods 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000003801 milling Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/49—Cages for rollers or needles comb-shaped
- F16C33/494—Massive or moulded comb cages
- F16C33/495—Massive or moulded comb cages formed as one piece cages, i.e. monoblock comb cages
- F16C33/497—Massive or moulded comb cages formed as one piece cages, i.e. monoblock comb cages made from metal, e.g. cast or machined comb cages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
DESCRIZIONE DESCRIPTION
"Metodo per realizzare una gabbia per cuscinetti di spalle di cilindri di laminazione" "Method for making a stand for rolling roll shoulders"
La presente invenzione ha per oggetto un metodo di lavorazione di un pezzo grezzo per realizzare una gabbia per cuscinetti per spalle di cilindri di laminazione. E’ altresì oggetto della presente invenzione un cuscinetto per spalle di cilindri di laminazione e un metodo per realizzarlo. The present invention relates to a method of machining a blank for making a bearing stand for rolling roll shoulders. The present invention also relates to a bearing for the shoulders of rolling rolls and a method for making it.
Sono noti metodi di realizzazione di una gabbia per cuscinetti comprendenti le fasi di: Methods for manufacturing a bearing cage are known comprising the steps of:
-esecuzione di una unica tornitura che genera un anello avente spessore e larghezza pari a quelli della gabbia finale; - execution of a single turning which generates a ring having a thickness and width equal to those of the final cage;
-esecuzione nella gabbia di alveoli mediante fresa a candela. Tali alveoli fungono da sede per i rulli cilindrici del cuscinetto. - execution in the cell cage by means of an end mill. These cavities act as seats for the cylindrical rollers of the bearing.
L’esecuzione di alveoli nella gabbia prevede la fresatura di detto anello mediante fresa a candela. Gli alveoli vengono fresati prima su un lato e poi sul lato opposto dell’anello e durante la fresatura l’anello viene trattenuto mediante una maschera dedicata. The execution of alveoli in the cage involves the milling of said ring by means of an end mill. The alveoli are milled first on one side and then on the opposite side of the ring and during the milling the ring is held by a dedicated jig.
Successivamente la gabbia viene sottoposta ad un trattamento di burattatura o sabbiatura per l’asportazione delle bave di lavorazione. Eventualmente può essere poi prevista un trattamento di brunitura o fosfatazione per la riduzione degli attriti. Subsequently, the cage is subjected to a tumbling or sandblasting treatment to remove the processing burrs. Optionally, a burnishing or phosphating treatment can then be provided to reduce friction.
Un inconveniente di tale soluzione costruttiva è legato al fatto che la realizzazione di detta tornitura unica fa si che si generino delle tensioni interne che durante la successiva fresatura degli alveoli potrebbero deformare notevolmente il pezzo aumentando il rischio di malfunzionamenti e conseguente rottura della gabbia durante l’esercizio. Tale problema è particolarmente sentito nel caso in cui tali cuscinetti siano impiegati nelle spalle di cilindri di laminazione dal momento che si tratta di macchine per le quali gli interventi di manutenzione straordinaria sono assolutamente da evitare visti gli alti costi connessi al fermo macchina nella produzione siderurgica. A drawback of this constructive solution is linked to the fact that the realization of said single turning causes internal tensions to be generated which during the subsequent milling of the alveoli could significantly deform the piece, increasing the risk of malfunctions and consequent breakage of the cage during the exercise. This problem is particularly felt in the case in which these bearings are used in the shoulders of rolling cylinders since they are machines for which extraordinary maintenance interventions are absolutely to be avoided given the high costs associated with machine downtime in iron and steel production.
In questo contesto, il compito tecnico alla base della presente invenzione è proporre un metodo che superi gli inconvenienti della tecnica nota sopra citati. In this context, the technical task underlying the present invention is to propose a method which overcomes the drawbacks of the prior art mentioned above.
In particolare, è scopo della presente invenzione mettere a disposizione un metodo che permetta di realizzare gabbie e cuscinetti affidabili e robusti. In particular, it is an object of the present invention to provide a method which allows to produce reliable and sturdy cages and bearings.
Ulteriore scopo della presente invenzione è proporre un metodo che permetta di mettere a disposizione cuscinetti in grado di sopportare elevati carichi. A further object of the present invention is to propose a method which allows to provide bearings capable of withstanding high loads.
Il compito tecnico precisato e gli scopi specificati sono sostanzialmente raggiunti da un metodo, comprendente le caratteristiche tecniche esposte in una o più delle unite rivendicazioni. The specified technical task and the specified aims are substantially achieved by a method, comprising the technical characteristics set out in one or more of the appended claims.
Ulteriori caratteristiche e vantaggi della presente invenzione appariranno maggiormente chiari dalla descrizione indicativa, e pertanto non limitativa, di una forma di realizzazione preferita, ma non esclusiva di un cuscinetto illustrato negli uniti disegni in cui: Further characteristics and advantages of the present invention will become clearer from the indicative, and therefore non-limiting, description of a preferred but not exclusive embodiment of a bearing illustrated in the accompanying drawings in which:
-figura 1 mostra una vista esplosa di un cuscinetto realizzato secondo il metodo della presente invenzione; figure 1 shows an exploded view of a bearing made according to the method of the present invention;
-figura 2 mostra una vista in sezione del cuscinetto di figura 1. - figure 2 shows a sectional view of the bearing of figure 1.
Oggetto della presente invenzione è un metodo di lavorazione di un pezzo grezzo per realizzare una gabbia di cuscinetti per spalle di cilindri di laminazione. Opportunamente tale gabbia 2 e' un monoblocco (realizzato in pezzo unico e non un assemblato di piu' pezzi). Preferibilmente la gabbia 2 e' in ottone. La gabbia 2 e' destinata ad alloggiare e tenere in posizione rulli 6 che permettono al cuscinetto 1 di minimizzare l'attrito. Il metodo comprende le fasi di: The object of the present invention is a method of machining a blank for making a bearing cage for rolling roll shoulders. Conveniently, this cage 2 is a monobloc (made in a single piece and not an assembly of several pieces). The cage 2 is preferably made of brass. The cage 2 is designed to house and hold rollers 6 in position which allow the bearing 1 to minimize friction. The method includes the steps of:
-eseguire una tornitura preliminare del pezzo lasciando un sovraspessore rispetto alle dimensioni nominali della gabbia 2; - perform a preliminary turning of the piece leaving an excess thickness with respect to the nominal dimensions of the cage 2;
-realizzare in detto pezzo alveoli 3 destinati ad accogliere i rulli 6 del cuscinetto 1; - producing in said piece cavities 3 intended to receive the rollers 6 of the bearing 1;
-eseguire una alesatura degli alveoli 3; -perform a boring of the alveoli 3;
-dopo aver eseguito gli alveoli 3 realizzare una tornitura addizionale per l’eliminazione di detto sovraspessore. - after having made the alveoli 3, carry out an additional turning for the elimination of said excess thickness.
Opportunamente la fase di eseguire una tornitura preliminare prevede di lasciare un sovraspessore minore di 4 millimetri, preferibilmente minore di 2 millimetri. Tale sovraspessore e' importante dal momento che permette di limitare la deformazione della gabbia 2 durante la fase di realizzare gli alveoli 3. Infatti durante l'esecuzione degli alveoli 3 si generano separatori 9 che dividono un alveolo 3 e quelli immediatamente adiacenti. Tali separatori 9 sono sagomati come dei denti che, in ragione delle tensioni che si vengono a liberare nella realizzazione degli alveoli 3, potrebbero deformarsi compromettendo la forma degli alveoli 3 e quindi il corretto funzionamento del cuscinetto 1. Il sovraspessore consente di minimizzare tale deformazione offrendo una maggiore sezione resistente. Inoltre l'eventuale deformazione che potrebbe comunque generarsi viene recuperata completamente con la successiva operazione di alesatura. La fase di realizzare alveoli 3 comprende la fase di eseguire una fresatura del pezzo preferibilmente mediante una fresa a disco. La fase di realizzare alveoli 3 prevede di realizzare una gabbia 2 a doppio pettine. In tal caso la gabbia 2 comprende un tratto 91 circonferenziale centrale da cui si sviluppano i separatori 9 che individuano i vari alveoli 3. Durante la fase di eseguire una fresatura della gabbia 2 il pezzo in lavorazione e' disposto di fianco sul piano di lavoro della fresatrice. L'asse della gabbia 2 (destinato a coincidere con l'asse di rotazione del cuscinetto 1) e' ortogonale al piano di lavoro. L'alesatura del pezzo permette di realizzare: il corretto gioco tra alveolo 3 e il rullo 6 in esso contenuto, una ritenuta radiale dei rulli 6, la gia' citata correzione della forma dell'alveolo 3 con una conseguente correzione dell'asse di rotazione dei rulli 6. Una eventuale minima formazione di bave di lavorazione potrà essere agevolmente rimossa. La fase di eseguire una tornitura addizionale della gabbia 2 comprende la fase di afferrare un fianco di detto pezzo mediante una maschera. La fase di eseguire una tornitura addizionale consente di rimuovere il sovraspessore portando la gabbia 2 alle dimensioni definitive. Conveniently, the step of performing a preliminary turning envisages leaving an excess thickness of less than 4 millimeters, preferably less than 2 millimeters. This extra thickness is important since it allows to limit the deformation of the cage 2 during the step of making the recesses 3. In fact, during the execution of the recesses 3, separators 9 are generated which divide a recess 3 and those immediately adjacent. These separators 9 are shaped like teeth which, due to the tensions that are released in the realization of the alveoli 3, could deform, compromising the shape of the alveoli 3 and therefore the correct functioning of the bearing 1. The extra thickness allows this deformation to be minimized by offering a greater resistant section. Furthermore, any deformation that could in any case be generated is completely recovered with the subsequent boring operation. The step of making alveoli 3 comprises the step of milling the piece preferably by means of a disc cutter. The step of making blisters 3 provides for making a double-comb cage 2. In this case the cage 2 comprises a central circumferential section 91 from which the separators 9 develop which identify the various cavities 3. During the step of milling the cage 2, the workpiece is placed sideways on the work surface of the milling machine. The axis of the cage 2 (destined to coincide with the rotation axis of the bearing 1) is orthogonal to the work plane. The boring of the piece allows to realize: the correct clearance between the pocket 3 and the roller 6 contained therein, a radial retention of the rollers 6, the aforementioned correction of the shape of the pocket 3 with a consequent correction of the rotation axis of the rollers 6. Any slight formation of machining burrs can be easily removed. The step of carrying out an additional turning of the stand 2 comprises the step of grasping a side of said piece by means of a mask. The step of performing an additional turning allows to remove the excess thickness bringing the cage 2 to the final dimensions.
Opportunamente il metodo comprende una fase di argentatura della gabbia 2; la fase di argentatura della gabbia 2 e' successiva a detta tornitura addizionale. La fase di argentatura comprende un trattamento superficiale di argentatura elettrolitica. Opportunamente la fase di argentatura prevede di applicare sulla gabbia uno strato di argento di spessore inferiore a 0,05 millimetri, preferibilmente compreso tra 0,01 e 0,03 millimetri. Tale trattamento permetterà la riduzione della rugosità superficiale diminuendo l'attrito tra l'alveolo 3 e il rullo del cuscinetto inserito in tale alveolo 3. In questo modo si ha una riduzione della temperatura del cuscinetto a parità di velocità di rotazione. Conveniently, the method comprises a step of silvering the cage 2; the step of silvering the cage 2 is subsequent to said additional turning. The silvering phase includes an electrolytic silver plating surface treatment. Conveniently, the silvering step involves applying on the cage a layer of silver with a thickness of less than 0.05 millimeters, preferably between 0.01 and 0.03 millimeters. This treatment will allow the reduction of the surface roughness by decreasing the friction between the cavity 3 and the roller of the bearing inserted in this cavity 3. In this way there is a reduction in the temperature of the bearing with the same rotation speed.
Oggetto della presente invenzione è inoltre un metodo di realizzazione di un cuscinetto a rulli per spalle di cilindri di laminazione comprendente le fasi di: The object of the present invention is also a method of manufacturing a roller bearing for the shoulders of rolling cylinders comprising the steps of:
-implementare un metodo di lavorazione di un pezzo grezzo per realizzare una gabbia 2 presentante una o più delle caratteristiche descritte in precedenza; - implementing a method of machining a blank for making a cage 2 having one or more of the characteristics described above;
-posizionare rulli 6 (opportunamente a profilo logaritmico) negli alveoli 3 di detta gabbia 2; - placing rollers 6 (suitably with logarithmic profile) in the recesses 3 of said cage 2;
-posizionare tra un anello 5 esterno e un anello 4 interno del cuscinetto 1 detta gabbia 2 e detti rulli 6. -posing said cage 2 and said rollers 6 between an outer ring 5 and an inner ring 4 of the bearing 1.
L'anello interno ed esterno 4, 5 verranno prodotti rispettando le tolleranze dimensionali P6 (DIN 620) e di forma P5 (DIN 620). Il metodo prevede quindi la fase di realizzare detto anello 5 esterno e preferibilmente in tale fase e' previsto che il rapporto tra lo spessore dell'anello 5 esterno (in senso radiale) e del diametro esterno di tale anello 5 in alcune sezioni sia minore di 0,05. Tale spessore consente di poter inserire rulli di dimensioni superiori rispetto a quelli posizionabili normalmente nei cuscinetti unificati di uguale diametro. The inner and outer rings 4, 5 will be produced respecting the dimensional tolerances P6 (DIN 620) and shape P5 (DIN 620). The method therefore provides for the step of making said outer ring 5 and preferably in this step it is provided that the ratio between the thickness of the outer ring 5 (in the radial direction) and the outer diameter of said ring 5 in some sections is less than 0.05. This thickness makes it possible to insert rollers of larger dimensions than those that can normally be positioned in unified bearings of the same diameter.
Conseguentemente il cuscinetto 1 potrà sopportare carichi maggiori. Consequently, the bearing 1 will be able to withstand greater loads.
L'anello 5 esterno e' realizzato in acciaio, preferibilmente 100Cr6. Tale materiale e' analogamente utilizzato anche per l'anello 4 interno. The outer ring 5 is made of steel, preferably 100Cr6. This material is similarly used also for the inner ring 4.
Il metodo di realizzazione del cuscinetto 1 comprende inoltre: The manufacturing method of bearing 1 also includes:
-una fase di rettifica di un bordo 91 circonferenziale ricavato su una superficie interna di detto anello 5 esterno; -a step of grinding a circumferential edge 91 obtained on an internal surface of said external ring 5;
- una fase di rettifica di una pista 92 circonferenziale ricavata su superficie della gabbia 2 che, dopo l’assemblaggio del cuscinetto 1, contraffaccia detto anello 5 esterno. - a step of grinding a circumferential track 92 obtained on the surface of the cage 2 which, after assembling the bearing 1, counterfaces said outer ring 5.
Opportunamente a cuscinetto 1 assemblato la distanza tra detto bordo 91 circonferenziale e detta pista 92 è minore di 0,05 millimetri. Questo consente un più preciso e stabile posizionamento della gabbia 2. Conveniently with bearing 1 assembled, the distance between said circumferential edge 91 and said track 92 is less than 0.05 millimeters. This allows a more precise and stable positioning of the cage 2.
Tale bordo 91 circonferenziale e' opportunamente equidistante rispetto alle due basi di estremita' dell'anello 5 esterno. Esso puo' dunque essere definito un bordo circonferenziale centrale. Opportunamente tale bordo 91circonferenziale centrale e' interposto tra due bordi circonferenziali 93, 94 laterali ricavati su una superficie interna dell'anello 5 esterno. Invece la pista 92 circonferenziale ricavata sulla gabbia 2 e' realizzata in detto bordo 91 circonferenziale centrale da cui si sviluppano i separatori 9. This circumferential edge 91 is suitably equidistant with respect to the two end bases of the outer ring 5. It can therefore be defined as a central circumferential border. Conveniently, this central circumferential edge 91 is interposed between two lateral circumferential edges 93, 94 formed on an internal surface of the outer ring 5. On the other hand, the circumferential track 92 obtained on the cage 2 is made in said central circumferential edge 91 from which the separators 9 develop.
Opportunamente il metodo prevede di realizzare i rulli 6. tale fase opportunamente prevede di realizzare rulli 6 aventi tolleranze dimensionali di circolarità (o piu' genericamente di forma) minori di 1 micrometro. Conseguentemente tutti i rulli di ogni cuscinetto 1 lavorano al meglio nelle rispettive zone di lavoro e contemporaneamente (limitando il rischio che non avendo uniformità di diametro e tolleranze lavorino solo alcuni rulli). La presente invenzione presenta numerosi vantaggi. In particolare essa permette di mettere a disposizione un metodo per la realizzazione di una gabbia estremamente robusta, tale da minimizzare il rischio di dover eseguire in impianti di laminazione interventi di manutenzione straordinaria per la rottura di cuscinetti. Conveniently, the method provides for the production of the rollers 6. this step conveniently provides for the production of rollers 6 having dimensional tolerances of circularity (or more generally of shape) less than 1 micrometer. Consequently, all the rollers of each bearing 1 work at their best in their respective working areas and at the same time (limiting the risk that only a few rollers are working due to not uniform diameter and tolerances). The present invention has numerous advantages. In particular, it makes it possible to provide a method for making an extremely robust stand, such as to minimize the risk of having to carry out extraordinary maintenance operations in rolling mills for bearing breakage.
L'invenzione così concepita è suscettibile di numerose modifiche e varianti, tutte rientranti nell'ambito del concetto inventivo che la caratterizza. Inoltre tutti i dettagli sono sostituibili da altri elementi tecnicamente equivalenti. In pratica, tutti i materiali impiegati, nonché le dimensioni, potranno essere qualsiasi, a seconda delle esigenze. The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept which characterizes it. Furthermore, all the details can be replaced by other technically equivalent elements. In practice, all the materials used, as well as the dimensions, may be any according to requirements.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000135A ITUD20130135A1 (en) | 2013-10-17 | 2013-10-17 | METHOD TO REALIZE A CAGE FOR LAMINATION CYLINDER SHOULDER BEARINGS |
| PCT/EP2014/072360 WO2015055837A1 (en) | 2013-10-17 | 2014-10-17 | Method for manufacturing a cage for bearings for lamination cylinder shoulders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000135A ITUD20130135A1 (en) | 2013-10-17 | 2013-10-17 | METHOD TO REALIZE A CAGE FOR LAMINATION CYLINDER SHOULDER BEARINGS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ITUD20130135A1 true ITUD20130135A1 (en) | 2015-04-18 |
Family
ID=49554456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT000135A ITUD20130135A1 (en) | 2013-10-17 | 2013-10-17 | METHOD TO REALIZE A CAGE FOR LAMINATION CYLINDER SHOULDER BEARINGS |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITUD20130135A1 (en) |
| WO (1) | WO2015055837A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE538061C2 (en) * | 2014-06-12 | 2016-02-23 | Skf Ab | Manufacture of structural elements in roller body bearings |
| CN108425949B (en) * | 2017-02-15 | 2020-04-10 | 时传坤 | Welded combined solid comb-shaped bearing retainer and manufacturing method thereof |
| CN109483262B (en) * | 2018-11-21 | 2020-08-21 | 中国航发哈尔滨轴承有限公司 | Die and method for machining inner ring of engine spindle bearing with inner-diameter oil groove |
| CN109531078B (en) * | 2019-01-14 | 2020-10-13 | 中国航发哈尔滨轴承有限公司 | Processing method of phenolic aldehyde rubberized fabric separated entity retainer |
| CN110936108B (en) * | 2019-11-19 | 2022-05-10 | 中国航发沈阳黎明航空发动机有限责任公司 | A processing method for improving assembly accuracy of thin-walled annular casing parts |
| CN114535940B (en) * | 2022-03-24 | 2023-12-15 | 中国航发哈尔滨轴承有限公司 | Processing method of short cylindrical roller bearing retainer with positioning flange on outer ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300597A (en) * | 1998-04-27 | 1999-11-02 | Ntn Corp | Manufacture of metallic machined cage |
| EP1803952A1 (en) * | 2004-10-22 | 2007-07-04 | Ntn Corporation | Machined cage for cylindrical roller bearing and method of manufacturing the same |
| US20080260313A1 (en) * | 2004-11-24 | 2008-10-23 | Nsk Ltd. | Self-Aligning Roller Bearing with Retainer and Manufacturing Method for Self-Aligning Roller Bearing Retainer |
| JP2011231876A (en) * | 2010-04-28 | 2011-11-17 | Ntn Corp | Cage for thrust roller bearing, and thrust roller bearing |
| CN102756244A (en) * | 2012-07-09 | 2012-10-31 | 大连冶金轴承股份有限公司 | A processing method for a wind power self-aligning spherical roller bearing cage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220644A (en) * | 1999-02-01 | 2000-08-08 | Nsk Ltd | Cylindrical roller bearing |
| DE102008060320A1 (en) * | 2008-12-03 | 2010-06-10 | Schaeffler Kg | Comb cage for a rolling bearing, in particular a double comb cage for a cylindrical roller bearing, roller bearing and method for producing a comb cage for a rolling bearing |
| CN102537080A (en) * | 2010-12-28 | 2012-07-04 | 瓦房店第一轧机轴承制造有限公司 | Novel movable-space-ring four-column cylindrical roller bearing for rolling mill |
-
2013
- 2013-10-17 IT IT000135A patent/ITUD20130135A1/en unknown
-
2014
- 2014-10-17 WO PCT/EP2014/072360 patent/WO2015055837A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11300597A (en) * | 1998-04-27 | 1999-11-02 | Ntn Corp | Manufacture of metallic machined cage |
| EP1803952A1 (en) * | 2004-10-22 | 2007-07-04 | Ntn Corporation | Machined cage for cylindrical roller bearing and method of manufacturing the same |
| US20080260313A1 (en) * | 2004-11-24 | 2008-10-23 | Nsk Ltd. | Self-Aligning Roller Bearing with Retainer and Manufacturing Method for Self-Aligning Roller Bearing Retainer |
| JP2011231876A (en) * | 2010-04-28 | 2011-11-17 | Ntn Corp | Cage for thrust roller bearing, and thrust roller bearing |
| CN102756244A (en) * | 2012-07-09 | 2012-10-31 | 大连冶金轴承股份有限公司 | A processing method for a wind power self-aligning spherical roller bearing cage |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015055837A1 (en) | 2015-04-23 |
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