EP0152564B1 - Fixation d'outil - Google Patents

Fixation d'outil Download PDF

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Publication number
EP0152564B1
EP0152564B1 EP19840114612 EP84114612A EP0152564B1 EP 0152564 B1 EP0152564 B1 EP 0152564B1 EP 19840114612 EP19840114612 EP 19840114612 EP 84114612 A EP84114612 A EP 84114612A EP 0152564 B1 EP0152564 B1 EP 0152564B1
Authority
EP
European Patent Office
Prior art keywords
spindle
tool
grinding wheel
draw
displacement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19840114612
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German (de)
English (en)
Other versions
EP0152564A2 (fr
EP0152564A3 (en
Inventor
& E. Fein Gmbh & Co. C.
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority claimed from DE19843405885 external-priority patent/DE3405885C1/de
Priority claimed from DE19843414148 external-priority patent/DE3414148C2/de
Priority claimed from DE19843431901 external-priority patent/DE3431901C2/de
Application filed by Individual filed Critical Individual
Publication of EP0152564A2 publication Critical patent/EP0152564A2/fr
Publication of EP0152564A3 publication Critical patent/EP0152564A3/de
Application granted granted Critical
Publication of EP0152564B1 publication Critical patent/EP0152564B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9377—Mounting of tool about rod-type shaft
    • Y10T83/9379—At end of shaft

Definitions

  • the invention relates to a device for fastening a tool in portable angle grinders, which allows the attachment to be released without an auxiliary tool.
  • the fastening flange which is firmly connected to the grinding spindle, must be held with an auxiliary tool. Then the counter flange, which is screwed onto the grinding spindle, can be loosened with a second auxiliary tool. This procedure is extremely cumbersome, involves great risk of injury and is also very time-consuming.
  • z. B. proposed in DE-PS-2 926 469 to lock the grinding spindle via a device integrated in the gear housing.
  • the advantage of this solution is that only one auxiliary tool is required to loosen the counter flange.
  • the user of such an angle grinder will often look for the auxiliary tool for loosening the counter flange, which is just not at hand.
  • a number of cases are known from practice in which the tool attachment was then forcibly released. The tool was damaged in many cases.
  • the user is not spared the hand holding the auxiliary tool to make a movement relative to the cutting edge of the tool, which keeps the risk of injury the same as compared to the old method.
  • An additional disadvantage is the design effort that must be made to secure the angle grinder against unintentional switching on.
  • a polishing device with a hollow spindle in which a tension spindle is held spring-loaded.
  • a pressure plate is provided which serves as a system for a polishing plate fastened to the pull spindle, so that a polishing cloth can be clamped between the polishing plate and the pressure plate.
  • the polishing cloth is clamped between the pressure plate and the polishing plate by the tension spindle spring-loaded in the direction away from the tool. Removal of the polishing cloth is possible in that the pull spindle can be acted on axially via a push button held on the polishing device, so that it moves together with the polishing plate away from the pressure plate and releases the polishing cloth clamped between them.
  • the invention has for its object to provide a device for releasably clamping a tool, in particular a grinding wheel, a hand-held angle grinder, in which no auxiliary tool for releasing and tightening the device when clamping the tool is required, so far usual tools, ie previously known grinding wheels are said to be usable.
  • a portable angle grinder with a device for fastening a tool which comprises a motor, an angular gear and a clamping point for the tool, the angular gear essentially comprising a motor pinion, a bevel gear and a drive shaft, with a hollow grinding spindle , which carries a counter flange on the tool side, with a traction spindle that can be displaced in the axial direction towards the tool in this grinding spindle against the force of spring elements and with a manually operable displacement device, by means of which an end piece of the traction spindle can be acted on from outside a gear housing and thus the traction spindle in the direction of the Tool is displaceable, solved in that the displacement device is designed to remain in a position exciting the tool and in a position releasing the tool, and an actuating element and one connected to it and with one transverse to it Axial direction of the grinding spindle extending inclined surface provided lifting element, the lifting element acting upon actuation of the displacement device
  • a tool attachment in which, after actuation of a displacement device, a spindle is displaced in the axial direction in a hollow drive shaft.
  • the displacement device is located at one end of the spindle, and the spindle is threaded at the other end.
  • the thread is used to screw on a nut. With this nut, the tool is pressed onto a counter flange, which is firmly connected to the drive shaft. The drive movement of the drive shaft can thus be transferred to the tool will wear.
  • a further variant of the present invention is based on the object, likewise a device for releasably clamping a tool, in particular a grinding wheel, of a hand-held angle grinder to create, in which no auxiliary tool for loosening or tightening the device when clamping the tool is required, previously common tools, ie Previously known grinding wheels should be usable and the device should also be designed so that the tool is no longer changed by turning a nut.
  • a portable angle grinder with a device for fastening a tool which comprises a motor, an angular gear and a clamping point for the tool, the angular gear essentially comprising a motor pinion, a bevel gear and a drive shaft, with a Hollow grinding spindle, which carries a counter flange, with an axially displaceable traction spindle in the grinding spindle, and with a displacement device for the traction spindle, solved in that the displacement device is designed in a position that excites the tool and remains in a position releasing the tool, that the position in which Hollow grinding spindle arranged pulling spindle is provided on its end facing away from the displacement device with a gripping device which can be actuated by sliding the pulling spindle, and that the tool can be clamped between a flange which can be gripped by the gripping device and the counterflange.
  • the screw fastening was thus replaced by a plug fastening.
  • a bore is machined on the end face of the spindle, which has a cross section similar to that of a pin facing it on the end face of the fastening bolt.
  • the spindle has slots in the area of the bore, in the manner of a collet, so that the jaws of this clamping device can move in the radial direction. This radial movement is achieved in that the spindle is displaced axially in a hollow drive shaft by the displacement device and an outer cone provided in the slotted area of the spindle can slide onto an inner cone provided at a corresponding point on the drive shaft.
  • the lateral surface of the pin and the wall of the bore have transverse grooves, so that they can engage with one another under radial pressure on the slotted spindle.
  • a groove with a resilient locking element attached to it is provided on the outer surface of the fastening bolt.
  • the resilient locking element snaps into a corresponding groove in the hollow drive shaft as soon as it has reached it.
  • the fastening bolt is designed so that when this locking point is not reached, the fastening bolt is only loosely seated in the drive shaft, which makes it easy to see that it must be pressed in even deeper.
  • the object of a further variant of the invention is to provide a device for releasably clamping a tool, in particular a grinding wheel, to create a hand-held angle grinder, in which no auxiliary tool for releasing or tightening the device when clamping the tool is required, and which is also designed so that the clamping of the tool with strong acceleration forces, ie e.g. B. does not solve when braking the rotating grinding wheel.
  • a portable angle grinder with a device for fastening a tool which comprises a motor, an angular gear and a clamping point for the tool, the angular gear essentially consisting of a motor pinion, a bevel gear and a drive shaft, with an in a grinding spindle axially displaceable traction spindle, with a displacement device, by means of which the traction spindle can be displaced in the direction of the tool, and with a counter flange held on the tool side on the grinding spindle, solved according to the invention in that the displacement device remains in a position exciting the tool and in a position releasing the tool is designed that a bolt can be screwed into the tool spindle and the front side, that the bolt is provided with a flange on its end remote from the spindle, that with the flange via an intermediate sleeve which is also provided with a flange, the work Stuff is pressed onto the counter flange, and that the sleeve
  • This solution provides that a pin is inserted on the end face of the spindle which is axially displaceably mounted in the hollow drive shaft is screwed, which is provided on its end facing away from the spindle with a flange, with which he presses the tool on the counterflange of the drive shaft via an intermediate sleeve which is also provided with a flange.
  • the sleeve is provided on the outer surface of its cylindrical part with teeth in the axial direction. This axial movement of the spindle lifts the nut, which presses the tool onto the counter flange, from the tool. Then you can easily loosen the knurled nut from the spindle by turning it. An auxiliary tool for loosening the nut is not necessary with this arrangement.
  • the effort to manufacture the displacement device is roughly equivalent to what it has to be done to integrate a spindle lock in the gear housing.
  • the angle grinder shown in FIG. 1 essentially shows a motor 14 shown broken off, a gear 1 connected to it and a tool 23.
  • the rotational movement of the motor is transmitted via a pinion 13 to a bevel gear 15 which is connected in a rotationally fixed manner to a drive shaft 16.
  • the drive shaft 16 is supported by two bearings 3 and 17 on opposite sides in the transmission housing 2. At one end of the drive shaft 16 there is a displacement device 6 to be actuated from outside the transmission housing 2. At the other end, the drive shaft 16 projects so far out of the transmission housing 2 out that on its periphery a counter flange 22, which serves to fasten the tool 23, can be rigidly connected to it.
  • the drive shaft 16 is hollow for receiving a spindle 20.
  • the spindle 20 protrudes over the end faces of the drive shaft 16.
  • the spindle 16 is z over a certain range.
  • B. provided with teeth 18.
  • the teeth 18 find their correspondence in the inner bore of the drive shaft 16. This positive connection ensures that the spindle 20 rotates synchronously with the drive shaft 16. The possibility that the spindle 20 can be moved in the axial direction relative to the drive shaft 16 remains.
  • a lever 12 arranged outside the transmission housing 2 is screwed into the transmission housing 2 with its cylindrical extension 9.
  • the axis of the threaded bore in the gear housing 2 and that of the cylindrical extension 9 lies in the extension of the axis of the spindle 20.
  • the drive shaft 16, which is rotatably supported by the two bearings 3 and 17, is on its end projecting beyond the bearing 3 with a provided sleeve-shaped cover 11, which has a circular opening for the spindle 20 in its bottom part 10.
  • a spring 4 is arranged, which presses a concentric extension 5 of the spindle 20 against the bottom part 10.
  • An end piece 7 of the spindle 20, which projects through the opening in the base part 10, extends into a recess 8 of the cylindrical extension 9.
  • the mutually facing surfaces on the end piece 7 and the depression 8 are designed in such a way that that when starting the machine, the frictional force between the two surfaces is sufficient to bring the lever 12 into the "closed position".
  • FIGS. 2, 3 and 4 are variants of the displacement device 6 according to FIG. 1, which have the effect that the dimensions of the gear housing can be kept smaller.
  • the spindle 20 is axially displaced via a displacement device 25.
  • the displacement device 25 consists of a slide button 27, which can slide on rails 29 in the gear housing 2.
  • the sliding button 27 projects with a grip surface 26 through an opening 28 and beyond the outer contour of the transmission housing 2.
  • the slide button 27 is provided with two cover strips 24 each extending over the opening 28.
  • the sliding button 27 has an inclined surface 30 on its side facing the spindle 20.
  • the displacement device 33 is arranged so that it z. B. is not inadvertently adjusted when putting down the angle grinder.
  • 2 troughs 32 are provided in the gear housing in each case in the area of the meeting of the two side surfaces and the side of the gear housing 2 facing away from the tool 23.
  • These troughs 32 have openings for a push rod 35 which can be moved transversely to the axis of the drive shaft 16.
  • the push rod 35 is guided laterally past the end piece 34.
  • a spring element 36 mounted obliquely on the push rod 35 presses a bead on the end piece 34 in the direction of the clamping point.
  • the inclined spring element 36 thus has the same effect as the inclined surface 30 according to the exemplary embodiment in FIG. 2.
  • the end piece 34 can also rotate if the user has forgotten the push rod 35 before switching on of the motor in the "close" position.
  • the angle grinder shown in FIG. 5 essentially has a motor 7 ', a gear 1' and a tool 21 '.
  • the rotational movement of the motor 7 ' is transmitted to a bevel gear 20' via a pinion 6 '.
  • the bevel gear 20 ' is non-rotatably and axially immovably connected to a drive shaft 5'.
  • the drive shaft 5 ' is supported in two bearings which are fixed in the housing 2' of the transmission 1 '.
  • a spindle 3' guided in the hollow drive shaft 5 ' can be displaced in the axial direction, as is described for FIG. 1.
  • the slots 18 ' allow the end of the spindle 3' to be pressed in the radial direction. This pressure should arise when the fastening bolt 12 'has been inserted into the drive shaft 5' and the pin 11 'is in the bore 10'. Then the displacement device is brought into the "closing" position and thus the spindle 3 'is moved away from the tool 21'. The pin 11 'is then clamped in the bore 10' of the spindle 3 'by an outer cone 9' of the spindle 3 'in the region of the slots 18' and a corresponding inner cone 8 'on the drive shaft 5'. In order to achieve a positive connection, the pin 11 'is provided on its lateral surface and the bore 10' on its wall with transverse grooves.
  • a resilient locking element 16 ' is inserted in a circumferential groove 14' of the fastening bolt 12 '. Only when the resilient locking element 16 'engages in a groove 17' of the hollow drive shaft 5 'is the point reached at which a positive connection between the pin 11' and the spindle 3 'can be established. Otherwise, the tolerances between the fastening bolt 12 'and the drive shaft 5' are selected such that the fastening bolt 12 'is only loosely guided in the drive shaft 5'.
  • the gear head 1 has, on one side, a displacement device 6" protruding from the transmission housing 2 ".
  • the displacement device 6" consists essentially of an actuating element 12 "and a lifting element 9".
  • the lifting element 9" firmly connected to the actuating element 12 "is screwed in or out of the thread provided in the gear housing 2".
  • the screwing or unscrewing takes place in the axial direction of a drive shaft 16 "mounted in the transmission housing 2".
  • a spindle 20 is axially displaceably mounted in the hollow drive shaft 16" and, as shown in the first-mentioned exemplary embodiment, can be displaced in the axial direction against the force of spring elements 4 "by the displacement device 6".
  • the drive shaft 16 is provided at one end with a sleeve-shaped cover 11", which has a circular opening for the spindle 20 “in its bottom part 10".
  • the spring elements 4 ′′ are arranged which press a concentric shoulder 5 ′′ of the spindle 20 ′′ against the base part 10 ′′.
  • An end piece 7 ′′ of the spindle 20 ", which protrudes through the opening in the bottom part 10" extends into a recess 8 "of the cylindrical extension 9".
  • a counter flange 22 is provided on the drive shaft 16".
  • a tool 23 "bears against this counter flange 22".
  • the tool 23 is centered by a shoulder on the counter flange 22".
  • the tool 23 is pressed against the counter flange 22" by a flange 57 “of a bolt 56" indirectly through the flange 53 "of a sleeve 54".
  • the contact pressure is generated in that the bolt 56 "is inserted through the cylindrical part 55" of the sleeve 54 "and with its threaded front part is screwed into a corresponding internal thread of the spindle 20" and, after screwing in the bolt 56 ", the actuating element 12" of the displacement device 6 "is brought into the” closing "position. This achieves a sufficient contact pressure for the use of the tool 23".
  • the hollow drive shaft 16 ′′ has an enlarged bore in the area of the counter flange 22 ′′.
  • the wall of the enlarged bore is provided with longitudinal grooves 51 ".
  • the corresponding toothing 52" on the lateral surface of the cylindrical part 55 "of the sleeve 54" can be inserted into the longitudinal grooves 51 ". This ensures a positive transmission of the rotary movement of the drive shaft 16" the sleeve 54 ".

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (31)

1. Meuleuse d'angle portative munie d'un dispositif de fixation d'un outil (23), qui comprend un moteur, un renvoi d'angle (13, 15) et un point de montage de l'outil, le renvoi d'angle étant essentiellement composé d'un pignon du moteur, d'une roue conique et d'un arbre d'entraînement, une broche porte-meule creuse (16) qui porte une contre-collerette (22) côté outil, une broche tirante (20) qui peut se déplacer en translation dans la direction axiale vers l'outil (23) à l'intérieur de cette broche porte-meule (16), à l'encontre de la force d'éléments élastiques, et un dispositif de translation (6, 25, 33) pouvant être actionné à la main et par lequel une queue (7, 31, 34) de la broche tirante (20) peut être soumise à une action exercée de l'extérieur du carter de renvoi d'angle, de sorte que la broche tirante (20) peut être déplacée en translation en direction de l'outil (23), caractérisée en ce que le dispositif de translation (6, 25, 33) est constitué de manière à s'immobiliser dans une position qui serre l'outil (23) et dans une position qui libère l'outil (23), et présente un élément d'actionnement (12, 27, 35) et un élément de levée (9, 30, 36) relié à l'élément d'actionnement et muni d'une surface oblique qui s'étend transversalement à la direction de l'axe de la broche porte-meule (16), l'élément de levée (9, 30, 36) agissant sur la queue (7, 31, 34) par la surface oblique lorsqu'on actionne le dispositif de translation (6, 25, 33), en ce que la broche tirante (20) est munie, côté outil, d'un téton fileté (19) sur lequel on peut visser un écrou (21) à la main dans la position qui libère l'outil et en ce que l'outil (23) peut être serré entre la contre-collerette (22) et l'écrou (21).
2. Dispositif selon la revendication 1, caractérisé en ce que la broche tirante (20) est tenue solidairement en rotation dans la broche porte-meule (16).
3. Dispositif selon la revendication 2, caractérisé en ce que la broche tirante (20) est munie d'une denture (18) qui trouve sa contre-partie dans la broche porte-meule creuse (16).
4. Dispositif selon une des revendications précédentes, caractérisé en ce que les éléments élastiques (4) sont disposés entre une surface frontale de la broche porte-meule (16) et une collerette (5) de la broche tirante (20).
5. Dispositif selon une des revendications précédentes, caractérisé en ce que la course de débattement des éléments élastiques (4) peut être limitée par un chapeau (11) en forme de boîte fixé sur la broche porte-meule (16).
6. Dispositif selon une des revendications précédentes, caractérisé en ce que l'élément de levée est un bossage cylindrique (9) du dispositif de translation (6), que la surface oblique de l'élément de poussée est un filetage au moyen duquel le bossage cylindrique (9) peut être vissé ou dévissé dans un perçage fileté du carter (2) du renvoi d'angle, de sorte que le bossage cylindrique (9) agit sur la queue (7) de la broche tirante (20).
7. Dispositif selon la revendication 6, caractérisé en ce que le bossage cylindrique (9) est disposé coaxialement à la broche porte-meule (16).
8. Dispositif selon une des revendications 1 à 5, caractérisé en ce que l'élément d'actionnement est un curseur (27) que l'on peut faire coulisser dans un guide (29) du carter (2) du renvoi d'angle et en ce que le curseur (27) porte l'élément de levée muni de la surface oblique (30) sur son côté qui est engagé dans le carter (2) du renvoi d'angle.
9. Dispositif selon une des revendications 1 à 5, caractérisé en ce que, dans les angles formés entre les surfaces latérales du carter (2) du renvoi d'angle et une surface de ce carter qui est à l'opposé de l'outil (23), sont prévues des niches (32) qui présentent une ouverture destinée à recevoir une tige coulissante (35) qui constitue un élément d'actionnement et en ce que la tige coulissante (35) présente en son milieu, sur une face dirigée vers la queue (34), un ressort (36) formant l'élément de levée, qui porte la surface oblique qui, de son côté, est disposée également obliquement par rapport à la direction de translation de la tige coulissante (35).
10. Meuleuse d'angle portative munie d'un dispositif de fixation d'un outil (21'), qui comprend un moteur et un renvoi d'angle, et un point de montage de l'outil, le renvoi d'angle étant essentiellement composé d'un pignon du moteur, d'une roue conique et d'un arbre d'entraînement, une broche porte-meule creuse (5') qui porte une contre-collerette (19'), une broche tirante qui peut se déplacer en translation dans la direction axiale dans la broche porte-meule (5'), et un dispositif de translation (4') agissant sur la broche tirante (3') caractérisée en ce que le dispositif de translation (4') est constitué de manière à pouvoir s'immobiliser dans une position qui serre l'outil (21') et dans une position qui libère l'outil (21') en ce que la broche tirante (3') agencée dans la broche porte-meule creuse (5') est munie, sur son extrémité qui est à l'opposé du dispositif de translation (4'), d'un dispositif de prise (15') pouvant être actionné par une translation de la broche tirante (3'), et en ce que l'outil (21') peut être serré entre une collerette pouvant être prise par le dispositif de prise (15') et la contre-collerette (19').
11. Dispositif selon la revendication 10, caractérisé en ce que le dispositif de prise (15') est constitué par le fait que le broche tirante (3') est fendue à la façon d'une pince de serrage et que, dans la région fendue, cette broche est munie d'un cône (9') sur sa surface latérale.
12. Dispositif selon la revendication 11, caractérisé en ce que, dans la région du cône (9') de la broche tirante (3'), la broche porte-meule (5') présente un cône intérieur correspondant (8').
13. Dispositif selon la revendication 12, caractérisé en ce que, sur une surface frontale de son extrémité fendue, la broche tirante (3') est munie d'un perçage (10').
14. Dispositif selon la revendication 13, caractérisé en ce que le perçage (10') présente sur sa paroi une configuration à liaison par obstacle telle que, par exemple, des rainures transversales.
15. Dispositif selon une des revendications précédentes 10 à 14, caractérisé en ce qu'une vis de fixation (12') présentant une collerette peut être assemblée à la broche tirante (3') par le dispositif de prise (15') par une liaison démontable.
16. Dispositif selon la revendication 15, caractérisé en ce que, sur sa face dirigée vers le dispositif de prise (15'), la tige de fixation (12') présente un téton (11') qui présente, sur sa surface latérale, une configuration de liaison par obstacle correspond à la paroi du perçage (10'), par exemple, des rainures transversales.
17. Dispositif selon la revendication 15 ou 16, caractérisé en ce que la tige de fixation (12') est munie d'une gorge circonférentielle (14') qui sert à recevoir un élément de verrouillage élastique (16').
18. Dispositif selon une des revendication 10 à 17, caractérisé en ce que la broche tirante (3') peut se déplacer en translation dans la broche porte-meule (5') en direction de l'outil (21'), à l'encontre de la force d'un élément élastique.
19. Dispositif selon une des revendications 10 à 18, caractérisé en ce qu'une queue de la broche tirante (3') peut être attaquée par le dispositif de translation, de l'extérieur du carter du renvoi d'angle et que de cette façon, la broche tirante (3') peut être déplacée vers l'outil (21') et en ce que le dispositif de translation (4') présente un élément d'actionnement et un élément de levée relié à cet élément d'actionnement et muni d'une surface oblique qui s'étend transversalement à la direction axiale de la broche porte-meule (5'), élément de levée qui agit sur la pièce d'extrémité par sa surface oblique lorsqu'on actionne le dispositif de translation (4').
20. Meuleuse d'angle portative munie d'un dispositif de fixation d'un outil (23'), qui comprend un moteur, un renvoi d'angle, et un point de montage de l'outil, le renvoi d'angle étant essentiellement composé d'un pignon du moteur, d'une roue conique et d'un arbre d'entraînement, une broche tirante (20") qui peut se déplacer en translation dans la direction axiale dans une broche porte-meule (16"), un dispositif de translation (6") par lequel la broche tirante (20") peut être déplacée en translation en direction de l'outil (23"), et une contre-collerette qui est montée côté outil sur la broche porte-meule (16"), caractérisée en ce que le dispositif de translation (6") est constitué de manière à s'immobiliser dans une position qui serre l'outil (23") et dans une position qui libère l'outil (23"), en ce qu'une vis (56") peut être vissée dans la broche tirante (20") côté outil, dans la face frontale, en ce que la vis (56") est munie d'une collerette (57") sur son extrémité qui est la plus éloignée de la broche tirante (20"), en ce que l'outil (23") est serré sur la contre-collerette (22") avec la collerette (57") par l'intermédiaire d'une douille intermédiaire (54") munie elle aussi d'une collerette (53"), et en ce que la douille (54") est montée mobile en translation axiale dans la broche porte-meule creuse (16") et bloquée en rotation par une liaison par obstacle.
21. Dispositif selon la revendication 20, caractérisé en ce que, dans la région cylindrique (55"), la douille (54") présente sur sa surface latérale une configuration de liaison par obstacle, de préférence une denture (52") orientée dans la direction axiale.
22. Dispositif selon une des revendications 20 ou 21, caractérisé en ce qu'une denture (50", 58") est prévue entre les collerettes (57", 53") et en ce que la profondeur de la denture (50", 58") est plus faible qu'une course de translation de la broche tirante (20").
23. Dispositif selon la revendication 22, caractérisé en ce que la denture (50", 58") interposée entre les collerettes (57", 53") s'étend sur une région partielle de leur extension radiale.
24. Dispositif selon une des revendications 20 à 23, caractérisé en ce que la vis (56") est munie, le long du bord de la collerette (57"), d'une structure qui améliore la facilité de prise.
25. Dispositif selon une des revendications 20 à 24, caractérisé en ce que la vis (56") est munie d'un filetage sur son extrémité qui est la plus éloignée de la collerette (57").
26. Dispositif selon une des revendications 20 à 25, caractérisé en ce que la broche tirante (20") peut se déplacer en translation en direction de l'outil (23") par rapport à la broche porte-meule (16") à l'encontre de la force d'éléments élastiques (4").
27. Dispositif selon la revendication 26, caractérisé en ce que les éléments élastiques (4") sont agencés entre une surface frontale de la broche porte-meule (16") et une collerette de la broche tirante (20").
28. Dispositif selon la revendication 27, caractérisé en ce que la course de débattement des éléments élastiques (4") est limitée par un chapeau (11") en forme de boîte.
29. Dispositif selon une des revendications 20 à 28, caractérisé en ce qu'une queue (7") de la broche tirante (20") peut être soumise à une action du dispositif de translation (6") en agissant de l'extérieur du carter (2") du renvoi d'angle.
30. Dispositif selon la revendication 29, caractérisé en ce que le dispositif de translation (6") présente un élément d'actionnement (12") qui agit sur la queue (7") par l'intermédiaire d'un élément de levée (9") muni d'une surface oblique qui s'étend transversalement à la direction axiale de la broche porte-meule (16") .
31. Dispositif selon une des revendications 20 à 30, caractérisé en ce que la broche tirante (20") est tenue solidairement en rotation dans la broche porte-meule (16").
EP19840114612 1984-02-18 1984-12-01 Fixation d'outil Expired EP0152564B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3405885 1984-02-18
DE19843405885 DE3405885C1 (de) 1984-02-18 1984-02-18 Einrichtung zum Befestigen einer Schleifscheibe an der Schleifspindel einer tragbaren Winkelschleifmaschine
DE3414148 1984-04-14
DE19843414148 DE3414148C2 (de) 1984-04-14 1984-04-14 Einrichtung zum Befestigen einer Schleifscheibe an einer tragbaren Winkelschleifmaschine
DE3431901 1984-08-30
DE19843431901 DE3431901C2 (de) 1984-08-30 1984-08-30 Einrichtung zum Befestigen einer Schleifscheibe an einer tragbaren Winkelschleifmaschine

Publications (3)

Publication Number Publication Date
EP0152564A2 EP0152564A2 (fr) 1985-08-28
EP0152564A3 EP0152564A3 (en) 1986-12-30
EP0152564B1 true EP0152564B1 (fr) 1989-08-23

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EP19840114612 Expired EP0152564B1 (fr) 1984-02-18 1984-12-01 Fixation d'outil

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US (2) US4597227A (fr)
EP (1) EP0152564B1 (fr)

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EP2017036A1 (fr) 2007-07-19 2009-01-21 C. & E. FEIN GmbH Outil manuel à moteur
DE102007035045A1 (de) 2007-07-19 2009-01-29 C. & E. Fein Gmbh Kraftgetriebenes Handwerkzeug

Also Published As

Publication number Publication date
USRE33335E (en) 1990-09-18
EP0152564A2 (fr) 1985-08-28
EP0152564A3 (en) 1986-12-30
US4597227A (en) 1986-07-01

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