EP0380974B1 - Meuleuse avec un adaptateur pour la fixation d'un outil supplémentaire - Google Patents

Meuleuse avec un adaptateur pour la fixation d'un outil supplémentaire Download PDF

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Publication number
EP0380974B1
EP0380974B1 EP19900101008 EP90101008A EP0380974B1 EP 0380974 B1 EP0380974 B1 EP 0380974B1 EP 19900101008 EP19900101008 EP 19900101008 EP 90101008 A EP90101008 A EP 90101008A EP 0380974 B1 EP0380974 B1 EP 0380974B1
Authority
EP
European Patent Office
Prior art keywords
flange
bolt
grinding machine
positive
adapter according
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 - Lifetime
Application number
EP19900101008
Other languages
German (de)
English (en)
Other versions
EP0380974A2 (fr
EP0380974B2 (fr
EP0380974A3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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.)
Filing date
Publication date
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Application filed by C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP0380974A2 publication Critical patent/EP0380974A2/fr
Publication of EP0380974A3 publication Critical patent/EP0380974A3/de
Application granted granted Critical
Publication of EP0380974B1 publication Critical patent/EP0380974B1/fr
Publication of EP0380974B2 publication Critical patent/EP0380974B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/16—Longitudinal screw clamp
    • 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 sliding machine with an adapter for attaching an additional tool suitable for a standard attachment to the grinding machine, the grinding spindle of which has a hollow spindle with a mating flange fixedly connected to it and a form-fitting piece, as well as a pulling spindle displaceable in the axial direction in the hollow spindle, the latter having a Includes recording for a manually fixable and releasable holding element.
  • Such grinding machines are known from EP-A-0 152 564, in which, however, no adapter is provided, but a holding flange is connected to the holding element, and thus the tool can be clamped between the counter flange and the holding flange by displacing the tension spindle.
  • the object of the invention is therefore to create a sliding machine with an adapter, with which an additional tool suitable for a standard fastening can be attached.
  • the adapter has a bolt which carries the holding element at one end and the standard fastening at an opposite end, that a flange is mounted on the bolt, which in The axial direction of the bolt relative to the latter can be adjusted from a mounting position into a securing position and vice versa, that the flange has a counterpart which can be brought into engagement with the form-fitting piece and that the bolt which can be inserted into the grinding spindle in the securing position in the direction of a further fixing movement of the Holding element in the receptacle is fixed non-rotatably on the grinding spindle.
  • the advantage of the adapter according to the invention can be seen in the fact that it can be inserted into the grinding spindle just like the holding flange, that the holding element can be manually fixed and detached in the receptacle, and that the adapter is finally clamped in that the pulling spindle is known in the hollow spindle is moved in the direction away from the counter flange and is held spring-loaded in this position.
  • the interaction of the flange with the bolt in the securing position ensures that the holding element cannot carry out any additional fixing movement and thus, after the pulling spindle has been moved in the direction of the counterflange into the position in which the adapter was also inserted manually, a manual one It is possible to loosen the adapter so that the adapter can be fixed to the grinding spindle by moving the pull spindle without the aid of an additional tool and can be released again later.
  • the receptacle and the holding element provides that both form a screw connection, the receptacle preferably being a receiving thread and the holding element being a holding pin which can be screwed into the receiving thread.
  • the form-fitting counterpart is designed as a flange attachment with an outer polygon that fits into an inner polygon of the form-fitting piece.
  • the standard fastening is a screw connection for the additional tool provided with a fastening recess.
  • a first embodiment provides that the flange has a threaded bore which is penetrated by a threaded portion of the bolt and that the bolt carries a collar which bears against the flange in the securing position and prevents the bolt from rotating further in the direction of a further locking movement of the same.
  • the threaded section has a thread pitch which corresponds to a thread pitch of the screw connection formed from the receptacle and holding element.
  • the collar also acts as a counter flange for the additional tool, so that it can be clamped against the collar with the standard fastening.
  • the flange is guided on the bolt so as to be displaceable and non-rotatable by positive locking elements in the axial direction.
  • the non-rotatable fixation of the bolt in the grinding spindle is achieved in that it is first brought into engagement with the receptacle with the holding element, the flange remaining in the assembly position and not engaging with the form-fitting counterpart in the form-fitting piece, while then, when the holding element is engaged with the receptacle, the flange is brought into engagement with the form-fitting counterpart of the grinding spindle by moving in the axial direction of the bolt with the form-fitting counterpart, so that the form-locking between the grinding spindle and the flange and in turn between the flange and the bolt of the bolt cannot be rotated is held in the grinding spindle.
  • the positive-locking elements are designed as an external polygon provided on the bolt and as an internal polygon provided on
  • the flange can be guided in various ways. However, it is particularly simple if the flange is guided through the form-locking elements themselves on the bolt.
  • the flange on the bolt can be fixed in the mounting position by locking elements.
  • the flange on the bolt can be fixed in the securing position by means of locking elements.
  • the form-locking elements are adapted in their cross-sectional shape to the form-locking counterpart and that the form-locking elements preferably have a cross-sectional shape which represents a reduction in the cross-sectional shape of the form-locking counterpart.
  • FIG. 2 A first exemplary embodiment of an adapter according to the invention, designated as a whole by 10, is shown in FIG. 2 in use in a grinding machine 12, the gear head 14 of which is shown partially broken away.
  • a grinding spindle 16 is arranged in the gear head 14 and carries the adapter 10, on which in turn an additional tool 18 is held by means of a standard fastening.
  • the grinding spindle 16 of the grinding machine 12 is driven in the usual way by a motor via an angular gear.
  • the grinding spindle 16 comprises a hollow spindle 20 which is provided with a counter flange 22 at its tool-side end.
  • a pull spindle 26 is displaceably mounted in the direction of a longitudinal axis 28 of the grinding spindle 16 and is held in the direction away from the counter flange 22 by compression springs 30.
  • a manual actuation device 32 which is held on the gear head 14 on the side opposite the counter flange 22, the tension spindle 26 can be displaced against the force of the compression springs 30 via a pressure piece 34.
  • a bore 36 which is coaxial with the axis 28 and open towards the counter flange 22 and which has a receiving thread 38 as a receptacle for a holding element.
  • the hollow spindle 20 is provided in the tool-side section of the central recess 24, that is to say in the region of the counter flange 22, with an inner polygonal section 40 which, in contrast to a circular cross-section, has flats 42, the secants of the circular one Form cross-section.
  • the adapter 10 according to the invention can now be used, which comprises a bolt 44 which carries at its foremost end a holding pin 46 which forms the holding element and which can be screwed into the receiving thread 38 with its external thread.
  • the bolt 44 is thus arranged coaxially to the axis 28 in the grinding spindle 16.
  • the bolt 44 is also provided with a collar 48, which one on the holding pin 44 ge on the opposite side and perpendicular to the axis 28 of the grinding spindle 16 and thus also the bolt 44 extends front surface 50, which serves as a contact surface for a carrier plate 52 of the additional tool 18.
  • a fastening pin 54 of the bolt 44 which is arranged coaxially with the holding pin 46 and which engages through a fastening recess 56 in the carrier plate 52 and onto which a fastening nut 58 can be screwed, by means of which the carrier plate 52 against the Front surface 50 of the federal government 48 is clamped.
  • the fastening pin 54 and the fastening nut 58 together form a standard fastening for the additional tool 18, the support plate 52 of which is provided with a standardized fastening recess 56.
  • the collar 48 On the side of the collar 48 opposite the front surface 50, the collar 48 is provided with a contact surface 60 running parallel to the front surface 50. Between this contact surface 60 and the holding pin 46, the bolt 44 carries a threaded portion 62 which has a thread pitch which is identical to a thread pitch of the holding pin 46.
  • This threaded section 62 passes through a threaded bore 64 of a flange designated as a whole by 66 in the region of its flange extension 68.
  • a flange plate 70 which extends radially outwards from this flange and is formed in such a way that it can rest on the counter flange 22, is formed on this flange extension 68 .
  • the flange shoulder 68 is in turn provided with an outer polygonal portion 72 which fits into the inner polygonal portion 40, so that it can be inserted into the central recess 24 of the hollow spindle 20 and is fixed in a rotationally fixed manner therein.
  • the flange 66 can now be moved from a securing position, in which it rests with its flange plate 70 on the contact surface 60 and also with its flange plate 70 on the counter flange 22, into an assembly position in which the collar 48 is no longer rests with the contact surface 60 on the flange plate 70, but is at a distance from it which is so large that the retaining pin 46 is no longer screwed into the receiving thread 38, as was the case in the aforementioned securing position. That is, the bolt 44 is so far displaceable relative to the flange 66 that its retaining pin 46 is fully engaged in the securing position with the receiving thread 38, while in the mounting position the retaining pin 46 is completely unscrewed from the receiving thread 38.
  • the bolt 44 can be screwed with the holding pin 46 into the receiving thread 38 without an additional relative displacement between the flange 66 and the pull spindle 26 until the collar 48 with the contact surface 60 on Flange plate 70 abuts and the flange 66 is thus in its securing position.
  • a play-free attachment of the first embodiment of the adapter 10 according to the invention now takes place in that the manual actuation device 32 from a position not exciting the adapter, in which the tension spindle 26 by the manual actuation device 32 via the pressure piece 34 against the force of the compression springs 30 in the direction of the counter flange 22 is moved into a position exciting the adapter 10, in which it no longer acts on the pressure piece 34 and thus the tension spindle 26 is fully exposed to the force of the compression springs 30, which strive to move them in the direction away from the counter flange 22 and thus to move the bolt 44 in the same direction, which means that the flange 66 is clamped with the flange plate 70 against the counter flange 22, so that the adapter 10 is seated in the grinding spindle 16 without play.
  • a second embodiment of the adapter according to the invention designated as a whole by 80, those parts which are identical to those of the first embodiment of the adapter 10 according to the invention are provided with the same reference numerals, so that reference can be made to the explanations for the description of the first embodiment with regard to their description.
  • This second exemplary embodiment 80 of the adapter according to the invention is also intended to be used in the grinding spindle 16 like the first exemplary embodiment 10 of the adapter according to the invention.
  • the additional tool 18 is also provided with the same fastening recess 56 in its carrier plate 52.
  • the adapter 80 carries the two th embodiment instead of the threaded portion 62, a guide portion 82 which has a cylindrical polygon 84, the flats 86 are arranged as secants of an arc.
  • the flange shoulder 68 is provided with an inner polygon 88.
  • the inner polygon 88 is preferably oriented relative to the outer polygonal portion 72 of the flange shoulder 68 such that the flats 86 run parallel to the flats 42 and thus the inner polygon 88 has a cross section that represents a reduction in the cross section of the inner polygonal portion 40 of the hollow spindle 20.
  • the flange shoulder 68 in the form of a hollow cylinder thus lies between the inner polygonal section 40 of the hollow spindle 20 and the outer polygonal section 84 of the guide section 82.
  • the guide section 82 is provided with an annular groove 90 in which there is a spring clip 92 which resiliently radially outwards with annular recesses 94 and 96 in the internal polygonal section 40 can be brought into engagement, wherein engagement in the annular recess 94 results in a locking in the securing position and locking in the mounting position by the annular recess 96.
  • the carrier plate 52 of the additional tool 18 does not rest on a collar, but directly on the flange plate 70, which in turn abuts the counter flange 22.
  • the assembly of the additional tool 18 with the adapter 80 takes place in that, when the flange 66 is locked in the assembly position, the bolt 44 is screwed into the receiving thread 38 with the holding pin 46. Even when the retaining pin 46 is completely screwed in, the flange 66 in the assembly position with its flange shoulder 68 is not in engagement with the inner polygon 40 of the hollow spindle 20.
  • the outer polygonal section 72 of the flange attachment 68 engages with the inner polygonal section 40 of the hollow spindle 20 only by moving the flange 66 with the holding pin 46 screwed into the receiving thread 38 in the direction of the counter flange 22. This displacement is possible because the flange extension 68 can slide on the guide section 82 of the bolt 44.
  • the bolt 44 is thus non-rotatably fixed in the hollow spindle 20 and thus also in the rotating spindle 16.
  • the fastening pin 44 provided over the flange plate 70 can thus be passed through the fastening recess 56, so that the fastening nut 58 bears the carrier plate 52 against the flange plate 70 of the flange 66. Tightening the fastening nut 58 using a tool is not necessary. A gentle turn is enough.
  • the pull spindle 26 can act on the bolt 44 in the direction away from the counter flange 22 , which has the consequence that the bolt 44, which is still displaceable in the axial direction in the flange 66, moves slightly with the tension spindle 26 and thus the fastening pin braces the fastening nut against the carrier plate 52 of the additional tool 18, which in turn again presses against the flange plate 70 is tensioned, which in turn abuts the counter flange 22 of the hollow spindle 20.

Claims (14)

1. Meuleuse avec un adaptateur (10, 80) pour la fixation d'un outil supplémentaire (18) convenant à une fixation standard (54, 58), sur la meuleuse dont la broche porte-meule (16) comporte une broche creuse avec une contre-bride (22), reliée de manière fixe avec celle-ci et une pièce d'assemblage par forme (40) ainsi qu'une broche de chariotage (26), coulissant axialement dans la broche creuse, cette broche de chariotage comprenant un logement (38) pour un élément de retenue (46) à fixer et desserrer manuellement, caractérisée en ce que l'adaptateur (10, 80) comporte un boulon (44), qui porte, à une extrémité, l'élément de retenue (46), et à l'extrémité opposée, la fixation standard (54, 58), en ce qu'il est monté sur le boulon (44) une bride (66), qui est déplaçable dans la direction axiale du boulon (44), par rapport à celui-ci, d'une position de montage à une position de blocage et inversement, en ce que la bride (66) comporte une contre-pièce d'assemblage par forme (68) pouvant être amenée en prise avec la pièce d'assemblage par forme (40), et en ce que le boulon (44), inséré dans la broche porte-meule (16), est fixé de manière à ne pouvoir tourner, sur la broche porte-meule (16), dans la direction d'un autre déplacement de fixation de l'élément de retenue (46) dans le logement (38), du fait de la bride (66) se trouvant en position de blocage.
2. Meuleuse avec un adaptateur selon la revendication 1, caractérisée en ce que le logement (38) et l'élément de retenue (46) forment un assemblage vissé.
3. Meuleuse avec un adaptateur selon la revendication 2, caractérisée en ce que le logement est un taraudage (38) et l'élément de retenue un goujon de retenue (46) à visser dans le taraudage (38).
4. Meuleuse avec un adaptateur selon l'une des revendications précédentes, caractérisée en ce que la contre-pièce d'assemblage par forme est une bride rapportée s'adaptant, avec une partie polygonale en relief (72), dans une partie polygonale en creux (40) de la pièce d'assemblage par forme.
5. Meuleuse avec un adaptateur selon l'une des revendications précédentes, caractérisée en ce que la fixation standard est un assemblage vissé (54, 58) pour l'outil supplémentaire (18) pourvu d'un évidement de fixation (56).
6. Meuleuse avec un adaptateur selon l'une des revendications précédentes, caractérisée en ce que la bride (66) présente un trou taraudé (64), qui est traversé par une partie filetée (62) du boulon (44) et en ce que le boulon (44) porte un épaulement (48) qui s'applique, en position de blocage, contre la bride (66) et empêche une rotation ultérieure du boulon (44).
7. Meuleuse avec un adaptateur selon la revendication 6, caractérisée en ce que la partie filetée (62) présente un pas qui correspond au pas de l'assemblage vissé, formé par le logement (38) et l'élément de retenue (46).
8. Meuleuse avec un adaptateur selon l'une des revendications 1 à 5, caractérisée en ce que la bride (66) est guidée par des éléments d'assemblage par forme (84, 88) dans la direction axiale du boulon (44) de manière à pouvoir coulisser et à ne pas tourner sur le boulon (44).
9. Meuleuse avec un adaptateur selon la revendication 8, caractérisée en ce que les éléments d'assemblage par forme sont un polygone en relief (84) prévu sur le boulon (44) et un polygone creux (88) prévu sur la bride.
10. Meuleuse avec un adaptateurselon la revendication 8 ou 9, caractérisée en ce que la bride (66) est guidée sur le boulon (44) par les éléments d'assemblage par forme (84, 88).
11. Meuleuse avec un adaptateur selon l'une des revendications 8 à 10, caractérisée en ce que la bride (66) peut être fixée sur le boulon (44) dans la position de montage, par des éléments à encliquetage (92, 96).
12. Meuleuse avec un adaptateur selon l'une des revendications 8 à 11, caractérisée en ce que la bride (66) peut être fixée sur le boulon (44), dans la position de blocage, par des éléments à encliquetage (92, 94).
13. Meuleuse avec un adaptateur selon l'une des revendications 8 à 12, caractérisée en ce que les éléments d'assemblage par forme (84, 88) sont adaptés dans leur section transversale à la contre-pièce d'assemblage par forme (72).
14. Meuleuse avec un adaptateur selon la revendication 13, caractérisée en ce que les éléments d'assemblage par forme (84, 88) ont une forme de section transversale qui constitue une réduction de la section transversale de la contre-pièce d'assemblage par forme (72).
EP19900101008 1989-02-01 1990-01-18 Meuleuse avec un adaptateur pour la fixation d'un outil supplémentaire Expired - Lifetime EP0380974B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893902874 DE3902874A1 (de) 1989-02-01 1989-02-01 Adapter zum befestigen eines zusatzwerkzeugs
DE3902874 1989-02-01

Publications (4)

Publication Number Publication Date
EP0380974A2 EP0380974A2 (fr) 1990-08-08
EP0380974A3 EP0380974A3 (en) 1990-12-27
EP0380974B1 true EP0380974B1 (fr) 1993-12-29
EP0380974B2 EP0380974B2 (fr) 1997-04-02

Family

ID=6373172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900101008 Expired - Lifetime EP0380974B2 (fr) 1989-02-01 1990-01-18 Meuleuse avec un adaptateur pour la fixation d'un outil supplémentaire

Country Status (3)

Country Link
US (1) US5058909A (fr)
EP (1) EP0380974B2 (fr)
DE (2) DE3902874A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP0152564B1 (fr) * 1984-02-18 1989-08-23 C. & E. FEIN GmbH & Co. Fixation d'outil
DE3520417C2 (de) * 1985-06-07 1994-01-20 Fein C & E Vorrichtung zum lösbaren Befestigen eines scheibenförmigen Werkzeugs, vorzugsweise einer Schleifscheibe oder dgl., an der Arbeitsspindel eines kraftgetriebenen Handwerkzeugs
DE3523746A1 (de) * 1985-07-03 1987-01-08 Metabowerke Kg Schnellspannvorrichtung fuer rotierende scheibenfoermige werkzeuge
DE3623555A1 (de) * 1986-07-12 1988-02-04 Fein C & E Befestigungseinrichtung fuer scheibenfoermige werkzeuge an der werkzeugspindel einer tragbaren elektrowerkzeugmaschine
US4834596A (en) * 1987-11-23 1989-05-30 T.M. Smith Tool International Corporation Quick change spindle adaptor for tool holder
DE3741484C1 (de) * 1987-12-08 1989-08-24 Fein C & E Handwerkzeugmaschine mit automatischer Arretierung der Arbeitsspindel

Also Published As

Publication number Publication date
US5058909A (en) 1991-10-22
EP0380974A2 (fr) 1990-08-08
EP0380974B2 (fr) 1997-04-02
DE3902874A1 (de) 1990-08-09
DE3902874C2 (fr) 1991-01-10
EP0380974A3 (en) 1990-12-27
DE59003986D1 (de) 1994-02-10

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