EP2750831A1 - Schleif- bzw. schneidwerkzeug für eine werkzeugmaschine mit drehantrieb - Google Patents
Schleif- bzw. schneidwerkzeug für eine werkzeugmaschine mit drehantriebInfo
- Publication number
- EP2750831A1 EP2750831A1 EP12735550.1A EP12735550A EP2750831A1 EP 2750831 A1 EP2750831 A1 EP 2750831A1 EP 12735550 A EP12735550 A EP 12735550A EP 2750831 A1 EP2750831 A1 EP 2750831A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- cutting tool
- abtragungsgrundkörper
- tool according
- tool
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 47
- 238000003754 machining Methods 0.000 claims abstract description 25
- 238000002679 ablation Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating 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
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/08—Grinders for cutting-off being portable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/12—Cut-off wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D99/00—Subject matter not provided for in other groups of this subclass
Definitions
- the invention relates to a grinding or cutting tool for a machine tool with rotary drive according to the preamble of claim 1.
- EP 0 487 948 B1 describes a grinding or cutting tool for a hand-held power tool with a rotary oscillation drive.
- the grinding or cutting tool has a Abtragungsground phenomenon with U-shaped cross section, whose end faces form cutting edges.
- the Abtragungsground phenomenon is made in one piece with a mounting portion over which the tool is releasably secured to the tool shaft.
- the attachment portion extends transversely to the U-shaped Abtragsgroundianu and is integrally formed with a leg of the body.
- the fastening section In the region of its region facing away from the U-shaped ablation body, the fastening section is connected to the tool shaft, whose drive axis of rotation extends parallel to the legs of the ablation main body. In the rotary oscillation movement of the U-shaped Abtragungsground Congress Being pivoted with a relatively long lever to the drive axis of rotation.
- the invention is based on the object with simple constructive measures a grinding or cutting tool for a machine tool with rotary drive in such a way that the forces acting on the machine tool forces are reduced and the service life is increased.
- the grinding or cutting tool according to the invention can be used in machine tools, in particular in handheld power tools with rotary drive, for example for the production of grooves. Both drives with only one direction of rotation and rotary oscillating drives with alternating direction of rotation are considered.
- the drive in the machine tool is preferably via an electric drive motor.
- the grinding or cutting tool has a Abtragungsgroundianu and a mounting portion.
- the Abtragungsgroundianu has a processing edge or a processing surface and is used for workpiece machining, whereas via the mounting portion a releasable connection with the tool shaft of the machine tool is made.
- the attachment portion and the Abtragungsground réelle are firmly connected to each other, they can optionally form a one-piece component.
- a recess for receiving the tool shaft is introduced, wherein the axis of the recess coincides with the drive axis of rotation.
- the grinding or cutting tool is driven about the drive axis of rotation.
- the fastening section and the ablation main body are arranged in relation to one another in such a way that the drive rotational axis through the fastening section simultaneously forms an axis of symmetry for the ablation main body.
- the Abtragungsground manipulate is carried out with respect to the symmetry axis in particular point-symmetrical.
- rotational symmetry is also considered.
- the Abtragungsground réelle is in alignment with the drive axis of rotation, whereby the lever arm between the drive rotational axis and the processing edge or surface is reduced to a minimum value.
- the ablation base body and the fastening portion are arranged axially offset from one another. As a result, reaction forces that arise during workpiece machining are minimized, so that the load on the machine tool and also for the processor is reduced accordingly and the service life is increased. Another advantage is that the moment of inertia is reduced.
- the machining edge or surface either over its entire length or surface at a distance from the drive axis of rotation or, according to an alternative embodiment, the machining edge or surface is cut from the drive axis of rotation, so that at least one point or a small area coincides directly with the drive axis of rotation. In both cases, however, also have the spaced apart from the drive axis of rotation portions only a relatively small distance.
- Cutting tools with the Abtragungsgroundianu be provided in alignment with the drive axis of rotation.
- the Abtragungsgroundsammlung on a flat bearing side, which rests on the workpiece during workpiece machining and on which the processing edge or surface is formed.
- the flat bearing side can be made flat or curved, for example convex bent outward.
- a mounting recess is placed in the support side of the ablation body suitably arranged coaxially to the drive axis of rotation. This mounting recess allows the insertion of a tool over which, for example, a nut can be tightened or released, which is part of a fastening device for fastening the grinding or cutting tool to the tool shaft.
- the Abtragungshuntianu having the flat bearing surface is formed for example U-shaped.
- the Abtragungshuntianu is advantageously connected to two wall portions, for example, the two legs of the U-shape, with the opposite edge regions of the mounting portion, so that an at least substantially closed hollow body is formed, which has a relatively high rigidity.
- the AbtragungsgrundSuper on an inner shoulder which serves to receive a fastening element of the fastening device, via which the grinding or cutting tool is attached to the machine tool or the tool shaft.
- the ablation base body is flat or planar and lying in a plane, the end edge of the ablation main body facing away from the attachment section forming the processing edge.
- the AbtragungsgroundSuper preferably extends orthogonal to the plane of the mounting portion, wherein the
- Machining edge is cut from the drive axis of rotation.
- a mounting recess can be introduced into the ablation base body adjacent to the fastening section.
- a support and guide section is formed on the Abtragungsgroundianu, which projects beyond the Abtragungsgroundianu transversely to the drive axis of rotation.
- the support and guide section makes it possible to rest the grinding or cutting tool on the workpiece to be machined at the beginning of the machining process, which simplifies the machining. If necessary, two support and guide sections at the end formed tragungsgroundsammlung, so that a support on the workpiece is possible in two places.
- the attachment portion is divided into two separate halves, which are each connected to the Abtragungsgroundêt.
- the dividing line between the halves preferably extends symmetrically through the attachment portion, in particular through the recess in the attachment portion for receiving the tool shaft.
- the fastening portion is firmly anchored with two halves in the fastening device, via which the connection is made to the tool shaft, so that no weakening in the stability of the grinding or cutting tool is given.
- the fastening section and the ablation main body are formed in one piece.
- the attachment portion and the ablation body are designed as separate components, but which are firmly connected.
- FIG. 1 is a perspective view of a grinding or cutting tool for a machine tool, with a formed as a hollow AbtragungsgroundSystem to which integrally a mounting portion is formed, via which the grinding or cutting tool is releasably secured to the tool shaft of a machine tool,
- FIG. 2 shows the grinding or cutting tool from FIG. 1 in a further perspective view
- a grinding or cutting tool having a plate-shaped Abtragungsgroundharmonics in a further embodiment, a grinding or cutting tool having a plate-shaped Abtragungsgroundissonharm.
- the same components are provided with the same reference numerals.
- FIGS. 1 to 3 show a first exemplary embodiment of a cutting or grinding tool 1 that can be used in machine tools, in particular hand-held power tools with a rotary drive.
- the rotary drive is either a continuous rotation in one direction or a rotary oscillation drive.
- the cutting or grinding tool 1 comprises a fastening section 2 and an ablation base body 3 for workpiece machining formed integrally with the fastening section 2.
- a central recess 4 is introduced, which serves to receive a tool shaft 5, the drive axis of rotation is denoted by 6.
- the drive axis of rotation 6 at the same time forms an axis of symmetry both for the attachment section 2 and for the removal base body 3, which lies in alignment with the axis of symmetry.
- the fastening section 2 and the ablation base body 3 are axially offset from one another.
- a number of smaller recesses 7 are introduced in a circle around the central recess 4, protrude into the noppenformige surveys of a fastening device which is fixedly connected to the tool shaft 5. In this way, the torque is transmitted from the tool shaft 5 to the cutting or grinding tool 1.
- alternative interface geometries for connecting the fastening section 2 to the fastening device on the tool shaft 5 come into consideration.
- the attachment portion 2 is divided symmetrically into two halves 2a and 2b, which are separated from each other by a parting line 8, which is guided centrally through the central recess 4.
- the two halves 2 a and 2 b of the fastening portion 2 are clamped by the fastening device, via which the attachment of the cutting or grinding tool 1 takes place on the tool shaft 5.
- the AbtragungsgrundSuper 3 is bent convexly outwards, in particular bent part-circular, wherein the outer side forms a support side 9, which rests in the workpiece machining on the workpiece top.
- the leading edge of Abtragungsgroundkorpers 3 forms a processing edge 10, which is designed as a cutting or grinding edge.
- the opposite side edge of Abtragungsgroundkorpers 3 may form a machining edge for workpiece machining.
- a mounting recess 1 1 is introduced, which is aligned with the drive axis of rotation 6.
- a tool can be inserted for fixing or for releasing the cutting or grinding tool 1 on the tool shaft 5 from below, for example, to be able to solve a fastening nut.
- the support surfaces 12 are one-piece part of Abtragungsgroundkorpers 3 and are bounded on its outer side by vertical wall sections 13, via which the one-piece connection to the overhead mounting portion 2 takes place.
- At the bearing surfaces 12 laterally projecting support and guide portions 14 are formed, which are placed at the beginning of the workpiece machining on the top of the workpiece and thereby provide improved guidance for the power tool.
- FIG. 4 shows a second exemplary embodiment of a cutting or grinding tool, comprising a disk-shaped fastening section 2 and a perpendicular or planar ablation base body 3 in the form of a plate whose end edge remote from the fastening section 2 is the machining edge 10 forms.
- the drive rotational axis 6 forms an axis of symmetry for the deflection.
- Tragungsgrundêtenia 3 the drive rotation axis 6 lies in the median plane of the plate-shaped ablation body 3.
- the AbtragungsgroundSuper 3 is provided with a mounting recess 1 1, which is located on the mounting portion 2 side facing.
- the attachment portion 2 and the Abtragungsgrundêtève 3 are made in one piece.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011082035A DE102011082035A1 (de) | 2011-09-02 | 2011-09-02 | Schleif- bzw. Schneidwerkzeug für eine Werkzeugmaschine mit Drehantrieb |
PCT/EP2012/063986 WO2013029868A1 (de) | 2011-09-02 | 2012-07-17 | Schleif- bzw. schneidwerkzeug für eine werkzeugmaschine mit drehantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2750831A1 true EP2750831A1 (de) | 2014-07-09 |
EP2750831B1 EP2750831B1 (de) | 2015-11-18 |
Family
ID=46514379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12735550.1A Active EP2750831B1 (de) | 2011-09-02 | 2012-07-17 | Schleif- bzw. schneidwerkzeug für eine werkzeugmaschine mit drehantrieb |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2750831B1 (de) |
DE (1) | DE102011082035A1 (de) |
WO (1) | WO2013029868A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3940743A1 (de) * | 1989-12-09 | 1991-06-13 | Chicago Pneumatic Tool Gmbh | Lochkreissaege |
DE4135573A1 (de) | 1990-11-28 | 1992-06-04 | Fein C & E | Verfahren und vorrichtung zum einbringen von oberflaechenkanaelen in plattenmaterial aus weichem werkstoff und verwendung einer vorrichtung |
DE29825263U1 (de) * | 1997-05-28 | 2007-10-25 | Maroc Gmbh | Schneidwerkzeug |
TWI238753B (en) * | 2002-12-19 | 2005-09-01 | Miyanaga Kk | Diamond disk for grinding |
DE102006055523A1 (de) * | 2006-11-24 | 2008-05-29 | Robert Bosch Gmbh | Schwenkpendelwerkzeug |
US8210909B2 (en) * | 2008-03-24 | 2012-07-03 | Robert Bosch Gmbh | Abrading system |
DE202008009525U1 (de) * | 2008-07-08 | 2009-11-19 | C. & E. Fein Gmbh | Werkzeug mit einer Befestigungsöffnung zur formschlüssigen Verbindung mit verschiedenen oszillierend antreibbaren Antriebswellen |
DE202009008427U1 (de) * | 2009-06-15 | 2010-11-04 | C. & E. Fein Gmbh | Schneidwerkzeug |
-
2011
- 2011-09-02 DE DE102011082035A patent/DE102011082035A1/de not_active Withdrawn
-
2012
- 2012-07-17 WO PCT/EP2012/063986 patent/WO2013029868A1/de active Application Filing
- 2012-07-17 EP EP12735550.1A patent/EP2750831B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013029868A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2750831B1 (de) | 2015-11-18 |
WO2013029868A1 (de) | 2013-03-07 |
DE102011082035A1 (de) | 2013-03-07 |
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