FR2494620A1 - ELECTRIC TOOL WITH OSCILLATING TOOL DRIVE - Google Patents
ELECTRIC TOOL WITH OSCILLATING TOOL DRIVE Download PDFInfo
- Publication number
- FR2494620A1 FR2494620A1 FR8117198A FR8117198A FR2494620A1 FR 2494620 A1 FR2494620 A1 FR 2494620A1 FR 8117198 A FR8117198 A FR 8117198A FR 8117198 A FR8117198 A FR 8117198A FR 2494620 A1 FR2494620 A1 FR 2494620A1
- Authority
- FR
- France
- Prior art keywords
- piston
- tool
- tool according
- oscillating
- rotor
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/027—Driving main working members reciprocating members
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
- A61F15/02—Devices for cutting bandages of any kind, e.g. shears, cast-cutting saws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/12—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of drives for circular saw blades
- B23D47/126—Angle drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/043—Accessories for spindle drives
- B23Q5/045—Angle drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B25/00—Hand cutting tools involving disc blades, e.g. motor-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B19/00—Other reciprocating saws with power drive; Fret-saws
- B27B19/006—Other reciprocating saws with power drive; Fret-saws with oscillating saw blades; Hand saws with oscillating saw blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Forests & Forestry (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Wood Science & Technology (AREA)
- Sawing (AREA)
- Transmission Devices (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
L'invention concerne un outil électrique avec entrainement oscillant de l'outil assuré par un mécanisme à coulisse oscillant disposé entre rotor et arbre d'entrat- nement d'outil, un maneton entraîné par le rotor transmettant son mouvement à un levier oscillant par l'intermédiaire d'une pièce coulissante. The invention relates to an electric tool with oscillating drive of the tool provided by an oscillating sliding mechanism arranged between rotor and tool drive shaft, a crank pin driven by the rotor transmitting its movement to a lever oscillating by the 'through a sliding piece.
Un instrument de ce genre est connu, par exemple, par le modèle d'utilité DE 1 992 633. One such instrument is known, for example, from the utility model DE 1 992 633.
Dans la disposition connue, la transmission du mouvement du maneton au levier oscillant se fait par l'intermé- diaire d'un roulement à rouleaux assumant la fonction d'une pièce coulissante et qui transmet son mouvement au levier oscillant par contact linéaire. In the known arrangement, the transmission of the movement of the crankpin to the oscillating lever is effected by means of a roller bearing assuming the function of a sliding part and which transmits its movement to the oscillating lever by linear contact.
Etant donné que l'utilisation prévue de l'instrument connu se limite au coupage de bandages plâtrés, la disposition de transmission fonctionne de façon assez fiable lorsquton l'utilise conformément à sa destination. Since the intended use of the known instrument is limited to cutting plaster bandages, the transmission arrangement works fairly reliably when used for its intended purpose.
Depuis l'introduction, en carrosserie, de la répara- tion par découpage qui est économique, on utilise aussi l'instrument connu pour couper du métal ou de la matière synthétique renforcée de fibres de verre car le mouvement oscillant de l'outil garantit une coupe exacte et sans déformation. Since the introduction, in the bodywork, of repair by cutting which is economical, we also use the known instrument for cutting metal or plastic reinforced with glass fibers because the oscillating movement of the tool guarantees a exact cut without deformation.
Par suite de la modification du mode d'utilisation, les éléments de transmission subissent des forces notablement plus grandes qui peuvent conduire à une défaillance prématurée de l'instrument. En particulier le roulement à rouleaux d'articulation qui joue le rôle de pièce coulissante est exposé à une usure renforcée par l'accumulation concentrée de processus de mouvement, d'autant plus qu'ici, jusqu'à 20 000 oscillations par minute sont transmises. Le soutien par glissement avec contact seulement linéaire, en combinaison avec la base d'oscillation relativement petite du roulement d'articulation, peut eAtre considéré comme insuffisant.En outre, les masses relativement grandes du levier oscillant et du roulement à rouleaux d'articulation ont pour effet, à un si grand nombre d'oscillations, d'ap pliquer une charge supplémentaire aux éléments de transmission tout en renforçant les vibrations réémises. As a result of the modification of the mode of use, the transmission elements undergo significantly greater forces which can lead to premature failure of the instrument. In particular, the articulation roller bearing which acts as a sliding part is exposed to wear reinforced by the concentrated accumulation of movement processes, all the more so since here, up to 20,000 oscillations per minute are transmitted. . Sliding support with only linear contact, in combination with the relatively small oscillation base of the articulation bearing, can be considered insufficient. In addition, the relatively large masses of the oscillating lever and the articulation roller bearing have the effect, at such a large number of oscillations, of applying an additional load to the transmission elements while reinforcing the re-emitted vibrations.
L'invention a pour but, dans un outil électrique à entraînement oscillant de l'outil de l'espèce indiquée plus haut, de fournir une disposition de transmission avec laquelle les éléments pivotants et coulissants présentent une base de guidage agrandie avec des conditions de graissage et de remplacement améliorées et en meme temps avec diminution de leurs masses. Un autre but est d'améliorer le fonctionnement sous l'angle du bruit et du comportement d'oscillation de la transmission. The object of the invention is, in an electric tool with oscillating drive of the tool of the species indicated above, to provide a transmission arrangement with which the pivoting and sliding elements have an enlarged guide base with lubrication conditions. and of replacement improved and at the same time with reduction of their masses. Another object is to improve the operation in terms of noise and the oscillation behavior of the transmission.
Selon l'invention, on y parvient gracie au fait que la pièce coulissante est conçue sous la forme d'un piston monté de manière à pouvoir coulisser et pivoter dans le levier oscillant
Grâce au fait que la pièce coulissante est conçue sous forme de piston, sa base est notablement améliorée aussi bien dans le guidage longitudinal que dans la marge de pivotement. C'est particulièrement le cas lorsque le rapport de la longueur du piston à son diamètre est supe- rieur à 1.According to the invention, this is achieved thanks to the fact that the sliding part is designed in the form of a piston mounted so as to be able to slide and pivot in the oscillating lever.
Thanks to the fact that the sliding part is designed in the form of a piston, its base is notably improved both in the longitudinal guide and in the pivoting margin. This is particularly the case when the ratio of the length of the piston to its diameter is greater than 1.
Le guidage est encore renforcé si le levier oscillant entoure le piston à la façon d'une fourche. L'ouverture de la fourche et le piston sont harmonises entre eux de telle sorte que l'on peut retirer le piston de la fourche qui l'entoure en le faisant simplement tourner, ce qui assure un remplacement facile. The guidance is further strengthened if the swing lever surrounds the piston like a fork. The fork opening and the piston are harmonized with each other so that you can remove the piston from the surrounding fork by simply rotating it, which ensures easy replacement.
Si l'on donne une forme de bielle au levier oscillant, il en résulte une faible masse d'oscillation avec une rigidité suffisante. If the swing lever is given a form of rod, this results in a low oscillation mass with sufficient rigidity.
Si les chambres à lubrifiant sont disposées aux cotés frontaux du piston et reliées au logement de maneton, cela assure un graissage amélioré du maneton. If the lubricant chambers are arranged at the front sides of the piston and connected to the crankpin housing, this ensures improved lubrication of the crankpin.
Si les surfaces de glissement entre piston et levier oscillant sont revêtues de polytétrafluoréthylène, on obtient un fonctionnement extrêmement silencieux de la transmission avec une faible usure. If the sliding surfaces between piston and oscillating lever are coated with polytetrafluoroethylene, extremely silent operation of the transmission is obtained with low wear.
Les forces d'inertie et les phénomènes d'usure sont particulièrement limites si le piston est fabriqué en un matériau contenant du titane. The inertia forces and wear phenomena are particularly limited if the piston is made of a material containing titanium.
On obtient un comportement avantageux d'oscillation et de graissage sans moyens supplémentaires notables si un anneau d'équilibrage solidaire du rotor suit en même temps le mouvement en tant qu'anneau d'étanchéité sans contact. An advantageous oscillation and lubrication behavior is obtained without significant additional means if a balancing ring secured to the rotor simultaneously follows the movement as a non-contact sealing ring.
On expliquera l'invention ci-après à propos d'un exemple d'exécution représenté par les dessins annexés dans lesquels la figure 1 est une vue en coupe du carter de transmission de l'outil électrique la figure 2 est une vue en coupe suivant la ligne. de coupe tracée dans la figure 1. The invention will be explained below in connection with an exemplary embodiment represented by the appended drawings in which FIG. 1 is a sectional view of the transmission casing of the power tool. FIG. 2 is a sectional view along line. of section traced in figure 1.
Dans un carter de transmission 10, un arbre d'entratnement 1 recevant l'outil 15 est monté de manière à pouvoir tourner dans des paliers 2 et 11 et fixé axialement. A l'arbre d'entrainement d'outil 1 est relié de fa çon solidaire en rotation un levier oscillant en forme de bielle 16/qui entoure à la façon d'une fourche un piston 22. Ce piston 22 est monté de manière à pouvoir coulisser et pivoter dans le levier oscillant 16 et assume ainsi en même temps la fonction d'une pièce coulissante et d'un palier de pivotement. Dans le piston 22 est prévu un logement de maneton 7 dans lequel est disposé un palier 4. In a transmission casing 10, a drive shaft 1 receiving the tool 15 is mounted so as to be able to rotate in bearings 2 and 11 and fixed axially. A tool drive shaft 1 is connected in rotationally integral manner to a rod-shaped oscillating lever 16 / which surrounds a piston 22 like a fork. This piston 22 is mounted so as to be able to slide and pivot in the oscillating lever 16 and thus assume at the same time the function of a sliding part and a pivot bearing. In the piston 22 is provided a crankpin housing 7 in which a bearing 4 is arranged.
Dans ce palier 4 s'engage un maneton 8 qui est solidaire en rotation du rotor 9 d'un moteur électrique non repré- senté plus précisément. En outre, sur le rotor 9 est monté un anneau d'équilibrage 6 qui, par sa surface latérale, assume un rôle supplémentaire d'étanchéité sans contact entre la cavité de transmission 3 et l'intérieur du carter 14 du moteur. De préférence, cela est assuré par un filetage de transport 13, dont le pas est opposé au sens de rotation du rotor 9.In this bearing 4 engages a crankpin 8 which is integral in rotation with the rotor 9 of an electric motor not shown more precisely. In addition, on the rotor 9 is mounted a balancing ring 6 which, by its lateral surface, assumes an additional sealing role without contact between the transmission cavity 3 and the inside of the casing 14 of the engine. Preferably, this is ensured by a transport thread 13, the pitch of which is opposite to the direction of rotation of the rotor 9.
Lors de la mise en service de l'outil électrique, le maneton 8 transmet sa rotation excentrique au piston 22 qui prend ainsi un mouvement longitudinal et de pivo tement. Alors que le mouvement longitudinal reste sans influence sur la suite du fonctionnement, les mouvements de pivotement sont transmis au levier oscillant 16 par les extrémités de fourche 17 et 21 entourant le piston 22 de telle sorte que le levier 16 est mis en oscillation. When the power tool is put into service, the crankpin 8 transmits its eccentric rotation to the piston 22 which thus takes a longitudinal and pivotal movement. While the longitudinal movement remains without influence on the rest of the operation, the pivoting movements are transmitted to the oscillating lever 16 by the fork ends 17 and 21 surrounding the piston 22 so that the lever 16 is set in oscillation.
Cette oscillation est transmise à l'outil 15 par l'inter- médiaire de l'arbre d'entraînement d'outil 1.This oscillation is transmitted to the tool 15 via the tool drive shaft 1.
Pour améliorer les propriétés de glissement et pour amortir les forces d'accélération au point de renversement, la surface de glissement entre piston 22 et levier oscillant 16 est munie d'un revêtement de polytétrafluoréthylène 18 On peut appliquer celui-ci, par exemple, en collant une feuille appropriée sur la surface latérale du piston. To improve the sliding properties and to absorb the acceleration forces at the reversal point, the sliding surface between piston 22 and oscillating lever 16 is provided with a coating of polytetrafluoroethylene 18. This can be applied, for example, by sticking a suitable sheet on the side surface of the piston.
Pour améliorer le graissage du maneton, le piston 22 est muni, à chacun de ses côtés frontaux, d'une chambre à-lubrifiant 5 qui communique par un canal 12 avec la région du maneton. To improve the lubrication of the crankpin, the piston 22 is provided, at each of its front sides, with a lubricant chamber 5 which communicates by a channel 12 with the region of the crankpin.
Le piston 22 est muni à sa surface latérale de deux plats opposés 19 et 20. Le levier oscillant 16 est ouvert en forme de fourche du coté du piston, l'ouverture de fourche G étant d'une part plus petite que le diamètre du piston, d'autre part plus grande que la distance A entre les deux plats 19 et 20 du piston. Grâce à cela, on obtient, d'une part, une fixation transversale et, d'autre part, un remplacement facile du piston 22. Après avoir séparé le carter de transmission 10 du carter de moteur 14 et donc aussi du rotor 9, on peut retirer le piston 22 du levier oscillant 16 en le faisant simplement pivoter de 900. The piston 22 is provided on its lateral surface with two opposite plates 19 and 20. The oscillating lever 16 is open in the form of a fork on the side of the piston, the fork opening G being on the one hand smaller than the diameter of the piston , on the other hand greater than the distance A between the two plates 19 and 20 of the piston. Thanks to this, one obtains, on the one hand, a transverse fixing and, on the other hand, an easy replacement of the piston 22. After having separated the transmission casing 10 from the motor casing 14 and therefore also from the rotor 9, one can remove the piston 22 from the swing lever 16 by simply rotating it 900.
Ainsi, la solution selon l'invention fournit une disposition de transmission robuste et à faible usure qui présente des propriétés de fonctionnement notablement améliorées relativement à la technique antérieure citée plus haut et qui est en même temps simple et peu coûteuse à entretenir. Thus, the solution according to the invention provides a robust and low-wear transmission arrangement which has significantly improved operating properties compared to the prior art mentioned above and which is at the same time simple and inexpensive to maintain.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8031084 | 1980-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2494620A1 true FR2494620A1 (en) | 1982-05-28 |
| FR2494620B1 FR2494620B1 (en) | 1984-11-30 |
Family
ID=6720779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8117198A Granted FR2494620A1 (en) | 1980-11-21 | 1981-09-09 | ELECTRIC TOOL WITH OSCILLATING TOOL DRIVE |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JPS57156122A (en) |
| CH (1) | CH654773A5 (en) |
| FR (1) | FR2494620A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437571A (en) * | 1992-08-14 | 1995-08-01 | Ryobi North America, Corp. | Detail sander |
| WO2008043709A3 (en) * | 2006-10-12 | 2008-09-18 | Bosch Gmbh Robert | Hand machine-tool, especially electrical shears |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE906620C (en) * | 1950-06-25 | 1954-03-15 | Bosch Gmbh Robert | Motor-driven hand-held device in which the rotating movement of a motor is converted into a reciprocating movement of a tool |
| FR1421503A (en) * | 1964-11-03 | 1965-12-17 | F E C Sa Francaise D Equipemen | Surgical saw |
| FR1574593A (en) * | 1967-08-11 | 1969-07-11 | ||
| US3505733A (en) * | 1967-10-09 | 1970-04-14 | Ingersoll Rand Co | Power operated hand tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742257Y2 (en) * | 1978-11-28 | 1982-09-17 |
-
1981
- 1981-07-28 CH CH489081A patent/CH654773A5/en not_active IP Right Cessation
- 1981-09-09 FR FR8117198A patent/FR2494620A1/en active Granted
- 1981-11-20 JP JP18677581A patent/JPS57156122A/en active Pending
-
1984
- 1984-12-12 JP JP18745484U patent/JPS60120722U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE906620C (en) * | 1950-06-25 | 1954-03-15 | Bosch Gmbh Robert | Motor-driven hand-held device in which the rotating movement of a motor is converted into a reciprocating movement of a tool |
| FR1421503A (en) * | 1964-11-03 | 1965-12-17 | F E C Sa Francaise D Equipemen | Surgical saw |
| FR1574593A (en) * | 1967-08-11 | 1969-07-11 | ||
| US3505733A (en) * | 1967-10-09 | 1970-04-14 | Ingersoll Rand Co | Power operated hand tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437571A (en) * | 1992-08-14 | 1995-08-01 | Ryobi North America, Corp. | Detail sander |
| WO2008043709A3 (en) * | 2006-10-12 | 2008-09-18 | Bosch Gmbh Robert | Hand machine-tool, especially electrical shears |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60120722U (en) | 1985-08-15 |
| JPS57156122A (en) | 1982-09-27 |
| JPH0224576Y2 (en) | 1990-07-05 |
| CH654773A5 (en) | 1986-03-14 |
| FR2494620B1 (en) | 1984-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |