FR2516193A1 - Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw - Google Patents
Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw Download PDFInfo
- Publication number
- FR2516193A1 FR2516193A1 FR8121112A FR8121112A FR2516193A1 FR 2516193 A1 FR2516193 A1 FR 2516193A1 FR 8121112 A FR8121112 A FR 8121112A FR 8121112 A FR8121112 A FR 8121112A FR 2516193 A1 FR2516193 A1 FR 2516193A1
- Authority
- FR
- France
- Prior art keywords
- mechanical speed
- endless screw
- speed change
- bevel gear
- change mechanism
- 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
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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/42—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with gears having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
La présente invention concerne les appareils ou ensembles mécaniques faisant varier la vitesse d'un arbre mené par rapport à un arbre menant,sans glissement, le rapport choisi restant constant, mais pouvant varier progressivement dans une gamme très étendue. The present invention relates to mechanical devices or assemblies varying the speed of a driven shaft relative to a driving shaft, without slipping, the chosen ratio remaining constant, but may vary gradually over a very wide range.
Dans les dispositifs connus de ce genre, deux disques, l'un menant, l'autre libre, sont assujettis à deux toupies, montées sur un arbre cannelé, perpendiculaire et entre les deux disques, l'un libre sur cet arbre, l'autre solidaire dudit arbre cannelé, le rapport variant en déplaçant latéralement la toupie et son arbre cannelé ; toutefois, dans ces systèmes, les pertes mécaniques et l'élévation de température sont importantes, et le rapport de vitesse est instable. On peut aussi citer les boites de vitesse à engrenages, mais celles-ci sont tributaires du nombre d'engrenages et les rapports de vitesse sont très limités.Il y a lieu de parler aussi des systèmes centrifuges, à billes, à grenaille, à poudre, dotés de glissements plus ou moins importants, et dont le rapport ne peut être maîtrisé, ainsi que l'abrasion et l'échauffement
Une autre catégorie de variateurs se rapporte aux systèmes hydrauliques à huile, dérivant tous de par leur principe, du brevet allemand HERMANN
FOTTINGER n 367 340 du 22/06/1906, et les plus usités ; ils sont, aussi, dotés de glissements plus ou moins importants, et doivent être suivis d'une boite de vitesse à engrenages à trois rapports et une marche arriere (dans leur application à des vehicules automobiles par exemple).Il y a lieu de parler ici, des variateurs de vitesse à courroies, dont les poulies d'entrainements sont composées de deux flasques indépendantes, pouvant s'écarter l'une par rapport à l'autre, produisant ainsi une variation des rapports.In known devices of this kind, two discs, one leading, the other free, are subject to two routers, mounted on a splined shaft, perpendicular and between the two discs, one free on this shaft, the another integral with said splined shaft, the ratio varying by moving the router and its splined shaft laterally; however, in these systems, the mechanical losses and the rise in temperature are significant, and the speed ratio is unstable. We can also cite gearboxes, but these are dependent on the number of gears and the speed ratios are very limited. There is also talk of centrifugal systems, ball, shot, powder , with more or less significant sliding, and whose ratio cannot be controlled, as well as abrasion and heating
Another category of variators relates to hydraulic oil systems, all deriving in principle from the German patent HERMANN
FOTTINGER n 367 340 dated 06/22/1906, and the most used; they are also endowed with more or less significant slip, and must be followed by a gearbox with three-speed gears and a reverse gear (in their application to motor vehicles for example). here, belt variable speed drives, whose drive pulleys are composed of two independent flanges, which can deviate from each other, thus producing a variation in the ratios.
La liste des procédés dérivant plus ou moins des types sus enfoncés est considérable et n'entre d'ailleurs pas dans le cadre de la présente invention. The list of processes deriving more or less from the above-mentioned types is considerable and does not, moreover, fall within the scope of the present invention.
Le variateur, selon cette invention, permet d'éviter les inconvénients précités car il est entièrement nécanique et résoud, en fait, ce qui était un peu considéré comme la "quadrature du cercle" ; il se compose, en effet, de deux engrenages d'une conception particulièrement originale. The variator, according to this invention, makes it possible to avoid the abovementioned drawbacks because it is entirely mechanical and in fact resolves what was somewhat considered to be "squaring the circle"; it consists, in fact, of two gears of a particularly original design.
te premier engrenage sur l'arbre moteur ou menant , est constitué d'une vis sans fin à plusieurs filets parallèles, et de forme tronconique. Il attaque, à 90 , c'est à dire perpendiculairement, un deuxième engrenage, tronconi que lui aussi et dont la denture est de forme hélicoldale. Ces deux engrenage et vis sans fin engrènent de façon à ce que l'arbre moteur ou venant vienne au contact de l'engrenage mené, le premier par son plus grand diamètre, avec le plus petit dianètre de l'emprenage de l'arbre mené, les deux arbres se plaçant perpendiculairement, l'un par rapport à l'autre, afin d'obtenir les différences de rapports ; afin d'obtenir un changement de sens de rotation de l'on par rapport à l'ortre, @@@@@ ant compe te une partie lises eist continuée par une portion de vis sans fin, cylindrique, celle-ci venant engrener un engrenage droit sur l'arbre mené, avec une partie lisse point mort entre cet engrenage droit et ltengrenage tronconique à forme de filets hélicoi- daux : ce changement de marche s'obtenant en continuant le mouvement de translation perpendiculaire des deux arbres l'un par rapport à l'autre, lesdits arbres étant congitués d'ébauches cannelées coulissant dans deux tubes d'entrainement dotés aussi de cannelures intérieures. Les pas des deux engrenages sont variables, chaque pas s'adaptant à son vis à vis, selon une forme de réalisation mécanique déterminante.Pour qu'il y ait engrènement et entrainement correct des deux pignons, le menant et le mené, il faut nécessairement 10) Que les deux parties tronconiques soient de dimensions et diamètres identiques et, par conséquence : 2 ) Que la somme des diamètres des cercles primitifs aux points de coincidence ait une valeur constante. te first gear on the motor or driving shaft, consists of an endless screw with several parallel threads, and of frustoconical shape. It attacks, at 90, that is to say perpendicularly, a second gear, tronconi that it too and whose toothing is helical-shaped. These two worms and worms mesh so that the driving or coming shaft comes into contact with the driven gear, the first by its largest diameter, with the smallest diameter of the entrainment of the driven shaft , the two trees being placed perpendicularly, one with respect to the other, in order to obtain the differences in ratios; in order to obtain a change of direction of rotation of the one relative to the other, @@@@@ ant compe te a smooth part eist continued by a portion of worm, cylindrical, this coming to mesh a spur gear on the driven shaft, with a smooth dead point between this spur gear and the frustoconical gear in the form of helical threads: this change in speed is obtained by continuing the perpendicular translational movement of the two shafts, one by relative to each other, said shafts being made up of grooved blanks sliding in two drive tubes also provided with internal grooves. The pitches of the two gears are variable, each pitch adapting to its opposite, according to a decisive mechanical embodiment. For there to be meshing and correct drive of the two pinions, the leading and the driven, it is necessarily necessary 10) That the two frustoconical parts are of identical dimensions and diameters and, consequently: 2) That the sum of the diameters of the primitive circles at the coincidence points has a constant value.
30) I1 faut également que la somme du pas de vis, en un point de colncidence, plus l'écart entre les dents de l'arbre mené au même point, soit également une valeur constante.30) It is also necessary that the sum of the screw pitch, at a point of coincidence, plus the difference between the teeth of the shaft led to the same point, also be a constant value.
En modifiant les rapports, arbre menant / arbre mené, ainsi que la pro gression du filetage de l'arbre menant, on pourra calculer la progression -variable de la rotation de l'arbre mené, et le pas variable de celui-ci. By modifying the ratios, driving shaft / driven shaft, as well as the progress of the threading of the driving shaft, one will be able to calculate the -variable progression of the rotation of the driven shaft, and the variable pitch thereof.
L'ensemble des deux engrenages et vis sans fin, seront montés dans un carter ou cadre et normalement lubrifié par une huile appropriée à l'usage demandé. The set of two gears and worms will be mounted in a housing or frame and normally lubricated with an oil suitable for the requested use.
Le dispositif selon l'invention permet, en agissant sur les moyens de mise en contact des deux engrenages, de faire varier à volonté le rapport ou démultiplication du variateur de vitesse mécanique à rapports multiples et dune façon continue et sans glissement. The device according to the invention makes it possible, by acting on the means for bringing the two gears into contact, to vary the ratio or reduction of the mechanical speed variator with multiple ratios at will and in a continuous manner and without slippage.
Le dessin annexé est une vue en perspective des moyens utilisés. The accompanying drawing is a perspective view of the means used.
Tel qutil est representé, le dispositif comporte un engrenage tronconique 1 à denture hélicoîdale 2, monté sur un arbre 3, suivi d'une partie cylindrique lisse 4, et d'un engrenage à denture droite 5 ; en 6, un tube cannelé, coulissant sur l'arbre a cannelures extérieures 7, dit arbre mené. En 8, une vis sans fin à profil tronconique 9, une partie cylindrique 10, et les filets cylindriques 11 ; en 12, le carter de solidarisation des pièces décrites. Le plus petit diamètre de 1, engrène sur le plus grand diamètre de 8, les deux pièces 1 & 8 se déplaçant longitudinalenent et transversalement par un moyen appropriés permettant ainsi la variation du rapport de transmission. Lorsque les parties 10 de l'arbre reniant 13, et 4, se trouvent en regard, il y a point mort et inversion de marche lorsque 1 engrène en 5. As shown, the device comprises a frustoconical gear 1 with helical teeth 2, mounted on a shaft 3, followed by a smooth cylindrical part 4, and a gear with straight teeth 5; in 6, a grooved tube, sliding on the shaft with external grooves 7, called driven shaft. At 8, an endless screw with a frustoconical profile 9, a cylindrical part 10, and the cylindrical threads 11; at 12, the casing for securing the parts described. The smallest diameter of 1, meshes with the largest diameter of 8, the two parts 1 & 8 moving longitudinally and transversely by an appropriate means thus allowing the variation of the transmission ratio. When the parts 10 of the disowned shaft 13, and 4, are facing each other, there is neutral and reverse gear when 1 meshes in 5.
Le dispositif , objet de l'invention, peut être utilisé dans tous les où l'on veut chtenir une variation du rapport des vitesses entre un arbre moteur et un arbre récepteur. Les applications se rapportant aux automobiles et assimilas, ainsi qutaux machines outils comme le tour, les fraiseuses, raboteuses.. cette énumération n1a'tant pas limitative. The device which is the subject of the invention can be used in all those where it is desired to obtain a variation in the speed ratio between a driving shaft and a receiving shaft. Applications relating to automobiles and the like, as well as to machine tools such as lathe, milling machines, planers, this list is not exhaustive.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8121112A FR2516193A1 (en) | 1981-11-06 | 1981-11-06 | Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8121112A FR2516193A1 (en) | 1981-11-06 | 1981-11-06 | Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2516193A1 true FR2516193A1 (en) | 1983-05-13 |
FR2516193B1 FR2516193B1 (en) | 1984-02-03 |
Family
ID=9263895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8121112A Granted FR2516193A1 (en) | 1981-11-06 | 1981-11-06 | Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2516193A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR467615A (en) * | 1914-01-06 | 1914-06-16 | Leon Serville | Device of helical gears, of different pitch and direction, meshing on the same wheel |
CH88611A (en) * | 1919-09-20 | 1921-03-16 | Rubeli Maurice | Gear. |
GB199566A (en) * | 1922-05-16 | 1923-06-28 | Ronald Marsden Hamilton | Improvements in variable speed ratio transmission gear |
AU33651A (en) * | 1951-01-19 | 1951-03-22 | Improvements in or relating to refrigerators embodying stabilized mixtures of oil and aliphatic halides | |
FR1121526A (en) * | 1954-10-23 | 1956-08-20 | Progressive speed variator | |
FR2248745A5 (en) * | 1973-10-22 | 1975-05-16 | Nussle Lionel | Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel |
-
1981
- 1981-11-06 FR FR8121112A patent/FR2516193A1/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR467615A (en) * | 1914-01-06 | 1914-06-16 | Leon Serville | Device of helical gears, of different pitch and direction, meshing on the same wheel |
CH88611A (en) * | 1919-09-20 | 1921-03-16 | Rubeli Maurice | Gear. |
GB199566A (en) * | 1922-05-16 | 1923-06-28 | Ronald Marsden Hamilton | Improvements in variable speed ratio transmission gear |
AU33651A (en) * | 1951-01-19 | 1951-03-22 | Improvements in or relating to refrigerators embodying stabilized mixtures of oil and aliphatic halides | |
FR1121526A (en) * | 1954-10-23 | 1956-08-20 | Progressive speed variator | |
FR2248745A5 (en) * | 1973-10-22 | 1975-05-16 | Nussle Lionel | Variable speed drive mechanism - has spiral strip on gear drum which drives rollers fitted onto gear wheel |
Non-Patent Citations (1)
Title |
---|
EXBK/67 * |
Also Published As
Publication number | Publication date |
---|---|
FR2516193B1 (en) | 1984-02-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2483002A1 (en) | DIRECT BIT CONTROL DEVICE FOR DRILLING EQUIPMENT | |
FR2501563A1 (en) | AUTOMATIC MANIPULATOR | |
US7273433B1 (en) | Continuously variable transmission | |
FR2544827A1 (en) | ANTI-GAME MECHANISM BETWEEN TEETH FOR MACHINE SPINDLE DRIVE | |
FR2708068A1 (en) | Continuously variable friction transmission. | |
FR2596480A1 (en) | VARIABLE SPEED TRANSMISSION | |
FR2678341A1 (en) | CONTINUOUSLY ADJUSTABLE GEARBOX, AND MORE PARTICULARLY ITS DOUBLE-EFFECT SECONDARY SERVOMECHANISM. | |
FR2523017A1 (en) | POINT-FREE POLISHING OR RODING APPARATUS | |
FR2658889A1 (en) | TWO SPEED POWER TRANSMISSION FOR A MOTOR TOOL, ESPECIALLY UNDER COMPRESSED AIR. | |
FR2473941A1 (en) | IMPROVED CORROYING MACHINE | |
FR2892959A1 (en) | AXIAL OSCILLATION DRILLING DEVICE. | |
FR2516193A1 (en) | Mechanical speed change mechanism - has perpendicular shafts geared together by bevel gear and endless screw | |
FR2692191A1 (en) | Pair of tensioning rollers, in particular for printing machines. | |
FR2704789A1 (en) | Revolving multi-spindle head for machine tool | |
FR3027366A1 (en) | DEVICE FOR TRANSMITTING MOTION BETWEEN A MOTOR PROVIDING A ROTATION MOVEMENT AND A RECEIVER MOVING INTO TRANSLATION | |
FR2561341A1 (en) | SPEED REDUCER WITH BALANCED AXIAL AND CROSS-SECTIONAL COMPONENTS | |
CA2056071C (en) | Mechanism for converting rotary motion into translatory motion | |
WO1988009887A1 (en) | Continuously-variable transmission without break in continuity | |
FR2527726A1 (en) | MECHANISM FOR CONTROLLING AND REGULATING A VARIABLE DIAMETER DRIVE PULLEY | |
EP0300870B1 (en) | Elastic pressure ring for speed reducers or multipliers with at least one output, such as for accessory drives in vehicles | |
JP2007113749A (en) | Continuously variable transmission | |
FR2868143A1 (en) | Gear ratio modifying device for continuously variable transmission, has axle driving band-chains which slide along roller-gears to vary diameter of semi-circles formed by roller-gears, to continuously modify ratio according to need | |
FR2789466A1 (en) | Infinitely variable friction drive for variety of applications has input shaft with double cones engaging inside surfaces of X-section pulleys with planetary rollers engaging fixed frame and output shaft | |
US902538A (en) | Speed-changing device. | |
EP0054979A1 (en) | Continuously variable speed variator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |