FR2547879A1 - Device for mounting an element given a reciprocating rectilinear motion, or a motion of rotation about an axis, in a casing - Google Patents
Device for mounting an element given a reciprocating rectilinear motion, or a motion of rotation about an axis, in a casing Download PDFInfo
- Publication number
- FR2547879A1 FR2547879A1 FR8310548A FR8310548A FR2547879A1 FR 2547879 A1 FR2547879 A1 FR 2547879A1 FR 8310548 A FR8310548 A FR 8310548A FR 8310548 A FR8310548 A FR 8310548A FR 2547879 A1 FR2547879 A1 FR 2547879A1
- Authority
- FR
- France
- Prior art keywords
- ring
- casing
- mounting
- shaft
- bearings
- 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.)
- Granted
Links
- 230000003071 parasitic effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000005489 elastic deformation Effects 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
Description
Dispositif de montage dans un carter d'un élément animé d'un mouvement rectiligne alternatif ou de rotation autour d'un axe.Device for mounting in a casing an element driven by an alternating rectilinear movement or by rotation about an axis.
L'invention concerne un dispositif de montage dans un carter d'un élément, tel qu'un arbre cylindrique, animé d'un mouvement rectiligne alternatif ou de rotation autour d'un axe,
Les dispositifs connus de montage dsun tel élément comprennent en général des paliers, tels que des paliers lisses, des roulements, des paliers à rotule, qui sont traversés axialement par l'élément et qui sont reçus dans des logements du carter.The invention relates to a device for mounting an element, such as a cylindrical shaft, in a reciprocating rectilinear movement or rotation around an axis,
Known devices for mounting such an element generally comprise bearings, such as plain bearings, bearings, spherical bearings, which are traversed axially by the element and which are received in housings of the housing.
Les forces ou les couples d'entraînement qui sont appliqués à cet élément pour le déplacer exercent souvent sur l'élément des forces ou des couples parasites de flexion ou de torsion qu'il est souhaitable de compenser.The forces or the driving couples which are applied to this element to move it often exert on the element parasitic forces or torques of bending or torsion which it is desirable to compensate.
On a déjà proposé d'interposer entre les logements du carter et les paliers de support et de guidage d'un arbre, des joints ou des bagues en caoutchouc ou en matière analogue qui, en raison de leur épaisseur et de leur élasticité relativement importantes, ont essentiellement pour effet de réduire les bruits et d'amortir les vibrations, ainsi que de compenser du même coup les flexions et torsions parasites précitées, mais qui ont également pour inconvénient de réduire de facon très importante la charge maximale que peuvent supporter les paliers.It has already been proposed to interpose, between the housings of the casing and the support and guide bearings of a shaft, seals or rings of rubber or similar material which, because of their relatively large thickness and elasticity, essentially have the effect of reducing noise and damping vibrations, as well as compensating at the same time the aforementioned parasitic flexions and twists, but which also have the drawback of very significantly reducing the maximum load that the bearings can bear.
L'invention a pour objet un dispositif permettant de compenser les flexions et torsions parasites précitées, sans pour autant réduire de façon sensible les charges maximales supportables par les paliers.The subject of the invention is a device making it possible to compensate for the aforementioned parasitic flexions and twists, without however significantly reducing the maximum loads that can be supported by the bearings.
Elle propose à cet effet un dispositif de montage dans un carter d'un élément animé d'un mouvement rectiligne alterna tif ou de rotation autour d'un axe, le dispositif comprenant des moyens de support et de guidage de cet élément formés par au moins un palier logé dans le carter et traversé axialement par l'élément, caractérisé en ce qu'il comprend des moyens de compensation des phénomènes de flexion et de torsion parasites exercés sur ledit élément, qui sont constitués par au moins une bague mince en matériau rigide à déformation élastique ayant une épaisseur comprise entre 0,05 et 4 mm environ, interposée entre l'élément mobile et ses moyens de support et de guidage, ou entre ces derniers et le carter.To this end, it proposes a device for mounting in a casing an element driven by an alternating rectilinear movement or by rotation about an axis, the device comprising means for supporting and guiding this element formed by at least a bearing housed in the casing and traversed axially by the element, characterized in that it comprises means for compensating for parasitic bending and torsion phenomena exerted on said element, which consist of at least one thin ring of rigid material with elastic deformation having a thickness of between 0.05 and 4 mm approximately, interposed between the movable element and its support and guide means, or between the latter and the casing.
La déformation élastique de la bague permet de compenser, au moins en partie, les flexions et torsions parasites précitées, tandis que sa faible épaisseur et sa rigidité permettent de conserver sensiblement à sa valeur nominale la charge maximale que peut supporter le palier.The elastic deformation of the ring makes it possible to compensate, at least in part, for the aforementioned parasitic flexions and twists, while its small thickness and its rigidity make it possible to keep substantially at its nominal value the maximum load that the bearing can bear.
Avantageusement,cette bague est réalisée en une matière plastique telle qu'un polyuréthane.Advantageously, this ring is made of a plastic material such as a polyurethane.
L'invention se révèle particulièrement intéressante quand elle est appliquée au support et au guidage des arbres d'un train d'engrenages et permet alors de maintenir une pression de contact uniforme entre les dentures en prise des engrenages, et donc de réduire l'usure de ces engrenages. The invention proves to be particularly advantageous when it is applied to the support and guiding of the shafts of a gear train and then makes it possible to maintain a uniform contact pressure between the teeth in engagement of the gears, and therefore to reduce wear. of these gears.
Dans certains cas particuliers, l'épaisseur de la bague peut être supérieure à 4 mm.In certain particular cases, the thickness of the ring can be greater than 4 mm.
Dans la description qui suit, faite à titre d'exemple, on se réfère aux dessins annexés, dans lesquels la figure 1 représente schématiquement une application de l'invention à un train d'engrenages parallèles; la figure 2 représente schématiquement une variante de réalisation de l'invention appliquée au support d'un arbre cylindrique; la figure 3 représente schématiquement une autre variante de réalisation de l'invention, appliquée au montage d'une roue dentée sur un arbre cylindrique; la figure 4 représente schématiquement un réducteur planétaire auquel l'invention est applicable; la figure 5 est une vue schématique d'une autre application de l'invention.In the description which follows, given by way of example, reference is made to the appended drawings, in which FIG. 1 schematically represents an application of the invention to a train of parallel gears; FIG. 2 schematically represents an alternative embodiment of the invention applied to the support of a cylindrical shaft; FIG. 3 schematically represents another variant embodiment of the invention, applied to the mounting of a toothed wheel on a cylindrical shaft; FIG. 4 schematically represents a planetary reducer to which the invention is applicable; Figure 5 is a schematic view of another application of the invention.
En figure 1, on a représenté schématiquement un train d'engrenages parallèles, comprenant un pignon droit 10 porté par un arbre cylindrique 12 et enqrénant avec un pignon droit 14 porté par un arbre cylindrique 16 parallèle à l'arbre 12. L'arbre 12 est supporté et guidé, de part et d'autre du pignon 10, par des roulements 18 reçus dans des logements d'un carter 20. De même, l'arbre 16 est supporté et guidé, de part et d'autre du pignon 14, par des roulements 22 montés dans des loqements du carter 20.In Figure 1, there is shown schematically a train of parallel gears, comprising a spur gear 10 carried by a cylindrical shaft 12 and meshing with a spur gear 14 carried by a cylindrical shaft 16 parallel to the shaft 12. The shaft 12 is supported and guided, on either side of the pinion 10, by bearings 18 received in housings of a casing 20. Similarly, the shaft 16 is supported and guided, on either side of the pinion 14 , by bearings 22 mounted in housings of housing 20.
Selon l'invention, une bague cylindrique mince 24, 26 est interposée entre la paroi du carter 20 et la cage extérieure de chaque roulement 18, 22 respectivement. Cette bague 24,26 est réalisée en une matière rigide à déformation élastique, notamment en une matière plastique telle qu'un polyuréthane, et a une épaisseur faible comprise entre 0,05 et 4 mm environ, déterminée en fonction de son diamètre, des flexions et/ou torsions parasites qu'elle est destinée à compenser, des charges maximales que doivent supporter les roulements 18 et 22, et des qualités de taillage des dentures des pignons 10 et 14.According to the invention, a thin cylindrical ring 24, 26 is interposed between the wall of the casing 20 and the outer cage of each bearing 18, 22 respectively. This ring 24, 26 is made of a rigid material with elastic deformation, in particular of a plastic material such as a polyurethane, and has a small thickness of between 0.05 and 4 mm approximately, determined according to its diameter, the flexions and / or parasitic twists which it is intended to compensate for, the maximum loads that the bearings 18 and 22 must bear, and the cutting qualities of the teeth of the pinions 10 and 14.
On a constaté que l'invention permettait d'uniformiser les pressions de contact entre les dentures des pignons1 ou au moins de réduire la pression maximale de contact, et donc de diminuer l'usure des engrenages.It has been found that the invention makes it possible to standardize the contact pressures between the teeth of the pinions 1 or at least to reduce the maximum contact pressure, and therefore to reduce the wear of the gears.
On se réfère maintenant à la figure 2 qui représente un arbre cylindrique 30 monté dans un carter 32 au moyen de deux paliers 34 qui sont axialement traversés par l'arbre 30 et qui sont distants l'un de l'autre. Une bague cylindrique 36 du type précité est interposée entre les surfaces périphériques extérieures des paliers 34 et la paroi correspondante du carter 32, en enveloppant extérieurement les deux paliers. Cette bague 36 est par exemple maintenue, pour son montage, entre deux cages cylindriques coaxiales 38 et 40.Referring now to Figure 2 which shows a cylindrical shaft 30 mounted in a housing 32 by means of two bearings 34 which are axially traversed by the shaft 30 and which are spaced from each other. A cylindrical ring 36 of the aforementioned type is interposed between the outer peripheral surfaces of the bearings 34 and the corresponding wall of the casing 32, by externally enveloping the two bearings. This ring 36 is for example held, for its mounting, between two coaxial cylindrical cages 38 and 40.
Dans cet exemple, l'arbre cylindrique 32 peut être mobile en rotation autour de son axe longitudinal, ou bien être animé d'un mouvement rectiligne alternatif le long de cet axe.In this example, the cylindrical shaft 32 can be movable in rotation about its longitudinal axis, or else be driven in an alternating rectilinear movement along this axis.
La variante de réalisation représentée en figure 3 concerne le montage d'un pignon 42 sur un arbre cylindrique 44 supporté dans un carter 46 de façon classique au moyen de deux roulements 48 disposés de part et d'autre du pignon 42.The variant embodiment shown in FIG. 3 relates to the mounting of a pinion 42 on a cylindrical shaft 44 supported in a casing 46 in a conventional manner by means of two bearings 48 arranged on either side of the pinion 42.
Ce pignon est monté sur l'arbre 44 avec interposition d'une bague 50 selon l'invention entre la surface cylindrique extérieure de l'arbre 44 et la surface cylindrique intérieure d'un orifice 52 traversé axialement par l'arbre 44. Comme précédemment, la bague 50 peut être tenue entre deux cages cylindriques coaxiales 54 et 56.This pinion is mounted on the shaft 44 with the interposition of a ring 50 according to the invention between the outer cylindrical surface of the shaft 44 and the inner cylindrical surface of an orifice 52 traversed axially by the shaft 44. As before , the ring 50 can be held between two coaxial cylindrical cages 54 and 56.
La figure 4 représente schématiquement un réducteur planétaire de type épicycloidal ou hypocycloidal, qui comprend un pignon solaire monté rotatif autour d'un axe 62, une couronne 64 à denture intérieure coaxiale au pignon solaire 60, et des pignons satellites 66 interposés entre le pignon solaire 60 et la couronne 64 et engrénant avec eux. Les axes de rotation des pignons satellites 66 sont parallèles à l'axe de rotation du pignon solaire 60 et de la couronne 64, de façon classique.FIG. 4 schematically represents a planetary reducer of the epicycloidal or hypocycloidal type, which comprises a sun pinion rotatably mounted around an axis 62, a ring gear 64 with internal toothing coaxial with the sun pinion 60, and satellite pinions 66 interposed between the sun pinion 60 and crown 64 and meshing with them. The axes of rotation of the planet gears 66 are parallel to the axis of rotation of the sun gear 60 and of the ring gear 64, in a conventional manner.
Selon l'invention, les arbres des pignons satellites 66 sont supportés et guidés par des roulements pourvus chacun d'une bague selon l'invention, de la même façon par exemple que les roulements 18 ou 22 du mode de réalisation de la figure 1.According to the invention, the shafts of the planet gears 66 are supported and guided by bearings each provided with a ring according to the invention, in the same way for example as the bearings 18 or 22 of the embodiment of FIG. 1.
Avec ce montage, les forces F d'attaque et de contact entre le pignon solaire et les pignons satellites sont sensiblement égales, ce qui permet une répartition sensiblement uniforme des couples entre les pignons satellites et améliore le rendement du réducteur planétaire. With this arrangement, the attack and contact forces F between the sun pinion and the planet gears are substantially equal, which allows a substantially uniform distribution of the torques between the planet gears and improves the efficiency of the planetary reducer.
La figure 5 représente schématiquement une autre application de l'invention au cas où une roue dentée 70 est en prise avec deux pignons identiques 72 synchronisés en rotation, chacun de ces pignons 72 étant solidaire d'un autre pignon 74, et les deux pignons 74 étant en prise avec un même pignon moteur 76. Les paliers des deux pignons 72, ou ceux des arbres sur lesquels ils sont montés, sont équipés de bagues selon l'invention. FIG. 5 schematically represents another application of the invention in the case where a toothed wheel 70 is engaged with two identical pinions 72 synchronized in rotation, each of these pinions 72 being integral with another pinion 74, and the two pinions 74 being engaged with the same motor pinion 76. The bearings of the two pinions 72, or those of the shafts on which they are mounted, are fitted with rings according to the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8310548A FR2547879B1 (en) | 1983-06-27 | 1983-06-27 | DEVICE FOR MOUNTING IN A HOUSING OF AN ANIMATED ELEMENT OF A RECTILINEAR MOTION OF MOTION OR ROTATION AROUND AN AXIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8310548A FR2547879B1 (en) | 1983-06-27 | 1983-06-27 | DEVICE FOR MOUNTING IN A HOUSING OF AN ANIMATED ELEMENT OF A RECTILINEAR MOTION OF MOTION OR ROTATION AROUND AN AXIS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2547879A1 true FR2547879A1 (en) | 1984-12-28 |
| FR2547879B1 FR2547879B1 (en) | 1986-05-23 |
Family
ID=9290182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8310548A Expired FR2547879B1 (en) | 1983-06-27 | 1983-06-27 | DEVICE FOR MOUNTING IN A HOUSING OF AN ANIMATED ELEMENT OF A RECTILINEAR MOTION OF MOTION OR ROTATION AROUND AN AXIS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2547879B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2446330C2 (en) * | 2009-07-24 | 2012-03-27 | Государственное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Twin gear unit with one drive gear wheel and equalised load paths |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2460629A (en) * | 1945-03-19 | 1949-02-01 | Thomas L Fawick | Cushioned planetary gearing |
| FR963414A (en) * | 1950-07-10 | |||
| US2700581A (en) * | 1953-03-13 | 1955-01-25 | Aluminium Francais I | Precision fit for bearings and the like |
| FR1244438A (en) * | 1959-09-17 | 1960-10-28 | Melle Usines Sa | Process for improving the assembly or mounting of mechanical parts |
| US3365256A (en) * | 1964-07-02 | 1968-01-23 | Mpb | Interfrence connection |
| US3381548A (en) * | 1966-07-25 | 1968-05-07 | Wuelfel Eisenwerk | Planetary gearing |
| US3533667A (en) * | 1967-09-04 | 1970-10-13 | Kugelfischer G Schaefer & Co | Roller journal bearing for rail vehicles |
| FR2065887A5 (en) * | 1969-10-10 | 1971-08-06 | Bando Kiko Co | |
| FR2115881A5 (en) * | 1970-11-21 | 1972-07-07 | Bhs Bayerische Berg | |
| FR2171513A5 (en) * | 1972-02-03 | 1973-09-21 | Fives Lille Cail |
-
1983
- 1983-06-27 FR FR8310548A patent/FR2547879B1/en not_active Expired
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR963414A (en) * | 1950-07-10 | |||
| US2460629A (en) * | 1945-03-19 | 1949-02-01 | Thomas L Fawick | Cushioned planetary gearing |
| US2700581A (en) * | 1953-03-13 | 1955-01-25 | Aluminium Francais I | Precision fit for bearings and the like |
| FR1244438A (en) * | 1959-09-17 | 1960-10-28 | Melle Usines Sa | Process for improving the assembly or mounting of mechanical parts |
| US3365256A (en) * | 1964-07-02 | 1968-01-23 | Mpb | Interfrence connection |
| US3381548A (en) * | 1966-07-25 | 1968-05-07 | Wuelfel Eisenwerk | Planetary gearing |
| US3533667A (en) * | 1967-09-04 | 1970-10-13 | Kugelfischer G Schaefer & Co | Roller journal bearing for rail vehicles |
| FR2065887A5 (en) * | 1969-10-10 | 1971-08-06 | Bando Kiko Co | |
| FR2115881A5 (en) * | 1970-11-21 | 1972-07-07 | Bhs Bayerische Berg | |
| FR2171513A5 (en) * | 1972-02-03 | 1973-09-21 | Fives Lille Cail |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2547879B1 (en) | 1986-05-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |