EP1513651A2 - Insert tool comprising an attaching unit - Google Patents
Insert tool comprising an attaching unitInfo
- Publication number
- EP1513651A2 EP1513651A2 EP03724866A EP03724866A EP1513651A2 EP 1513651 A2 EP1513651 A2 EP 1513651A2 EP 03724866 A EP03724866 A EP 03724866A EP 03724866 A EP03724866 A EP 03724866A EP 1513651 A2 EP1513651 A2 EP 1513651A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert tool
- fastening unit
- tool according
- locking
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- 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
- B24B23/028—Angle 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
- 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
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/02—Wheels in one piece
Definitions
- the invention relates to an insert tool with a fastening unit according to the preamble of claim 1.
- a tool holder for a hand-held angle grinder and an insert tool with a hub are known.
- the tool holder has a driving device, via which the hub or the fastening unit of the insert tool can be operatively connected to a drive shaft.
- the hub of the insert tool can be operatively connected to the driving device via latching elements of the driving device which can be moved against a spring element.
- Recesses are made in the hub, into which the latching elements engage in a form-fitting manner in an operating position of the insert tool and fix the insert tool.
- the invention is based on an insert tool with a fastening unit for a machine tool, in particular for a hand-held angle grinder, with a driving device.
- the fastening unit has at least one latching element for fixing that points towards the driving device.
- a fastening unit for mounting the insert tool in the machine tool can be reached, in which parts that can be lost, in particular a clamping flange, a clamping nut, etc., can advantageously be avoided.
- Correct assembly of the insert tool in particular in the case of insert tools which are tied in the direction of rotation, is ensured by the latching elements pointing towards the driving device.
- the locking elements facing the driving device result in an intuitively correct assembly of the insert tool in a correct working position.
- safety for an operator can be increased by only mounting tools that have been approved by the manufacturer. A so-called closed system can be reached.
- the fastening unit and the locking element can be made in one piece or in several parts. If the fastening unit and the locking element are made in several parts, the locking element and the fastening unit can be made of different materials. The different materials can be adapted to special requirements or to different loads, such as shear, pressure and / or tension. load designed and dimensioned accordingly. However, the latching element is particularly advantageously formed in one piece with the fastening unit. A fastening unit can be reached that is simple in design and inexpensive to manufacture. Additional components, costs and assembly time can be avoided.
- the latching element and the fastening unit can be produced from a complete unit in one work step and the latching element can be brought into its shape. Manufacturing steps, such as, in particular, cutting free and bending the locking element, can be reduced and production costs can be reduced.
- the locking element can also be produced by other methods that the person skilled in the art considers useful, such as by laser cutting, sawing, etc.
- the locking element is elastically deformable.
- a structurally simple fixation of the fastening unit in the axial and / or in the circumferential direction can be achieved. Additional spring elements can be saved and costs can be reduced.
- the latching element is designed in the form of a tab.
- the latching element is structurally simple, elastic and easy to shape.
- a first part extending approximately in the axial direction can be used Driving and / or for securing in a first circumferential direction can be used.
- a second part, essentially perpendicular to the first part, can be used advantageously for securing in the axial direction and a third part, which extends approximately in the axial direction, can be used advantageously for securing in a second circumferential direction.
- a torque can advantageously be transmitted via a single detent element, the insert tool secured in the axial direction, and a sequence lock for the insert tool when the machine tool is switched off.
- Components, in particular components for securing the process, can be saved and costs can be reduced.
- the latching element forms a tapering area tapering in the working direction.
- the fastening unit of the insert tool can advantageously be pressed against the tapering receiving region during operation, and a play-free securing of the fastening unit in the axial direction can be achieved via a large contact surface.
- the fastening unit have a centering opening.
- the insert tool can advantageously be centered on a centering collar of the driving device, and low-vibration operation of the insert tool can be achieved. If a corresponding latching element on the tool holder can be moved against a spring element, an advantageous positive connection with a large overlap and a secure securing of the insert tool in the circumferential direction can be achieved. Furthermore, when the insertion tool is placed and rotated on a tool holder, the locking element of the insertion tool and the corresponding locking means can snap into one another with clearly audible acoustic feedback, and the operator can be informed of a correct fixation of the insertion tool.
- Fig. 1 is an angle grinder from above and Fig. 2 is an exploded view of a tool holder and an insert tool. Description of the embodiment
- FIG. 1 shows an angle grinder 12 from above with an electric motor, not shown, which is mounted in a housing 44.
- the angle grinder 12 can be guided via a first handle 46, which extends in the longitudinal direction and is integrated in the housing 44 on the side facing away from an insert tool, and via a second handle 50 which is attached to a gear housing 48 in the region of the insert tool and extends transversely to the longitudinal direction.
- a drive shaft 52 can be driven via a gear (not shown in more detail), at the end of which facing the insert tool a driving device 14 is arranged (FIG. 2).
- the driving device 14 has a driving flange 54 firmly pressed onto the drive shaft 52 on a side facing the insert tool and a locking disk 56 mounted on the drive shaft 52 on a side facing away from the insert tool.
- the locking disk 56 is centered in the axial direction 22 facing away from the insert tool arranged spring element 42 formed by a helical spring.
- the locking disk 56 has on its side facing the insert tool three locking elements 40 evenly distributed in the circumferential direction 26, 28, each of which is formed by a groove, and has a contour corresponding to the driving flange 54 for positive rotational driving in the direction of rotation 30. Furthermore, three axial bores 92, 94, 96, which are uniformly distributed in the circumferential direction 26, 28, are introduced into the locking disk 56 in a radially inner region.
- the driving flange 54 of the driving device 14 has three driving elements 64, 66, 68 pointing radially outwards, which are arranged uniformly distributed in the circumferential direction 26, 28 (FIG. 2).
- three axial through bores 78, 80, 82 are made in the radially inner region, which are arranged uniformly distributed in the circumferential direction 26, 28.
- An unlocking button 70 engages in the assembled state with its pins 58, 60, 62 pointing in the axial direction 22 through the axial through bores 78, 80, 82 of the driving flange 54 (FIG. 2).
- the ends of the pins 58, 60, 62 engage in the axial bores 92, 94, 96 of the locking disk 56 and snap into them in a captive manner with hooks (not shown).
- the insert tool has a fastening unit 10 formed by a sheet metal hub with a closed centering opening 38 (FIG. 2).
- the outer circumference of the fastening unit 10 is firmly connected to an abrasive 84.
- the fastening unit 10 In its operating position, the fastening unit 10 has three tab-shaped latching elements 16, 18, 20 for fixing in the axial direction 22 to the driving device 14.
- the elastically deformable locking elements 16, 18, 20 are arranged uniformly distributed in the circumferential direction 26, 28 and are formed in one piece with the fastening unit 10 by a punching process.
- a first part which extends approximately in the axial direction 22, is rotated in a first circumferential direction 26, a second part adjoining the first part at an obtuse angle Securing in the axial direction 22, 24 and a third, approximately extending in the axial direction 22 part for securing in a second circumferential direction 28 is reached.
- the locking elements 16, 18, 20 form in the direction of rotation 30 tapering receiving areas 32, 34, 36 for the driving elements 64, 66, 68 of the driving flange 54.
- the insert tool is pushed with its centering opening 38 onto a centering collar (not shown in more detail) and centered over the closed centering opening 38.
- the latching elements 16, 18, 20 pass through free spaces 86, 88, 90 between the driving elements 66, 68, 70 of the driving flange 54.
- Rotating the insert tool in the circumferential direction 28 or counter to the direction of rotation 30 causes the receiving areas 32, 34 , 36 of the locking elements 16, 18, 20 come into operative connection with the tapering driving areas 72, 74, 76 of the driving elements 64, 66, 68.
- the locking disk 56 is here by pushing the locking elements 16, 18, 20 against the tapering driving areas 72, 74, 76 of the driving flange 54, which act as ramps, by the locking elements 16, 18, 20 against the spring force of the spring element 42 in the axial direction 22 postponed.
- the locking disk 56 is driven by the spring force of the spring elements 42, moved in the axial direction 24 against the driving flange 54 and the latching elements 16, 18, 20 engage positively with an audible click in the corresponding latching elements 40 of the latching disk 56.
- the insert tool or the fastening unit 10 is fixed in a rotationally fixed manner on the drive shaft 52 in both circumferential directions 26, 28.
- the positive engagement of the locking elements 16, 18, 20 with the respective locking elements 40 of the locking disc 56 prevents the insert tool from running out due to the inertia when switching off.
- a play-free, secure hold of the fastening unit 10 in the axial direction 22, 24 is ensured by the driving areas 72, 74, 76 of the driving elements 64, 66, 68 which taper in the direction of rotation 30.
- the latching elements 16, 18, 20 thus simultaneously secure the fastening unit 10 of the insert tool in an axial and circumferential direction 22, 24, 26, 28.
- the release button 70 axially in the direction 22 of the driving flange 54.
- the detent disk 56 is axially displaced in the direction 22 facing away from the insert element 42 against the spring force of the spring element.
- the locking elements 16, 18, 20 of the insert tool are guided out of the locking elements 40 of the locking disc 56 and released.
- the insert tool can then be rotated in the direction of rotation 30, and the driving elements 64, 66, 68 of the driving flange 54 come with their driving areas 72, 74, 76 out of engagement with the receiving areas 32, 34, 36 of the locking elements 16, 18, 20.
- the insert tool or the fastening unit 10 can be in the axial direction 24 from the Driving device 14 are withdrawn. After releasing the release button 70, it slides back into its original position.
Landscapes
- 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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10225051 | 2002-06-06 | ||
DE2002125051 DE10225051A1 (en) | 2002-06-06 | 2002-06-06 | Insert tool with a fastening unit |
PCT/DE2003/001230 WO2003103897A2 (en) | 2002-06-06 | 2003-04-11 | Insert tool comprising an attaching unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1513651A2 true EP1513651A2 (en) | 2005-03-16 |
EP1513651B1 EP1513651B1 (en) | 2013-01-09 |
Family
ID=29718866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03724866A Expired - Lifetime EP1513651B1 (en) | 2002-06-06 | 2003-04-11 | Insert tool comprising an attaching unit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1513651B1 (en) |
CN (1) | CN1630571B (en) |
DE (1) | DE10225051A1 (en) |
WO (1) | WO2003103897A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3479957A4 (en) * | 2016-12-16 | 2020-06-03 | Miretec Co., Ltd. | Rotation device |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7343841B2 (en) | 2002-02-15 | 2008-03-18 | Black & Decker Inc. | Blade clamp assembly |
DE102006021969A1 (en) * | 2006-05-04 | 2007-11-08 | C. & E. Fein Gmbh | oscillatory |
CN101342677B (en) * | 2007-07-11 | 2011-08-03 | 苏州宝时得电动工具有限公司 | Hand-hold power tool |
DE102008023324A1 (en) * | 2008-05-13 | 2009-11-19 | Aeg Electric Tools Gmbh | Protective hood for a power tool, in particular an angle grinder and power tool with such a protective hood |
DE102010013102A1 (en) * | 2010-03-29 | 2011-09-29 | Robert Bosch Gmbh | Discharge safety device |
EP2598285A4 (en) * | 2010-07-29 | 2013-12-25 | Myles Graham Kelly | Plate locking mechanism |
DE102013208691A1 (en) * | 2013-05-13 | 2014-11-13 | Robert Bosch Gmbh | Tool clamping device |
RU2736767C2 (en) | 2016-08-22 | 2020-11-19 | Роберт Бош Гмбх | Quick-clamping device for portable process machine, in particular for angular grinder |
WO2018036920A1 (en) * | 2016-08-22 | 2018-03-01 | Robert Bosch Gmbh | Quick tensioning device for a portable machine tool, in particular for an angle grinding machine |
CN111136581A (en) * | 2018-11-05 | 2020-05-12 | 韩建英 | Special cutting piece of fast loading and unloading |
CN111660193B (en) * | 2020-06-08 | 2021-08-10 | 苏州高之仙自动化科技有限公司 | Polishing head assembly and stone polishing robot |
CN111421411B (en) * | 2020-06-08 | 2020-10-16 | 上海高仙自动化科技发展有限公司 | Cleaning head and intelligent cleaning robot |
CN111546159B (en) * | 2020-06-08 | 2021-06-25 | 上海高仙自动化科技发展有限公司 | Polishing head assembly and stone polishing robot |
KR102636796B1 (en) * | 2022-02-08 | 2024-02-14 | 최윤석 | Grinder of disk fixture |
DE102022203295A1 (en) | 2022-04-01 | 2023-10-05 | Janser Gmbh | Tool connecting device for a processing machine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1830362A (en) * | 1930-01-15 | 1931-11-03 | Automatic Floor Waxing Machine | Brush attachment for floor treating machines |
US2561279A (en) * | 1945-07-27 | 1951-07-17 | William E Holt | Floor maintenance machine |
US2518279A (en) * | 1947-06-30 | 1950-08-08 | Albert F Bruder | Drive connection for a shoe polisher |
US2541526A (en) * | 1950-05-19 | 1951-02-13 | Hendrik W Lundquist | Clutch for floor conditioning machines |
US3266206A (en) * | 1962-07-03 | 1966-08-16 | Allied Chem | Insulated built up roof and insulation therefor |
US3266200A (en) * | 1964-06-04 | 1966-08-16 | Merit Products Inc | Abrasive device |
FR2063429A5 (en) * | 1969-10-14 | 1971-07-09 | Cybeo Aldigero | |
US5347673A (en) * | 1992-10-01 | 1994-09-20 | Black & Decker Inc. | Quick change pad assembly for orbital polisher |
DE10017458A1 (en) * | 2000-04-07 | 2001-10-18 | Bosch Gmbh Robert | Tool holder for a grinding machine has insert tool actively connected to drive shaft through follower device with positive engagement through spring-tensioned detent element |
-
2002
- 2002-06-06 DE DE2002125051 patent/DE10225051A1/en not_active Ceased
-
2003
- 2003-04-11 CN CN03803584.7A patent/CN1630571B/en not_active Expired - Fee Related
- 2003-04-11 WO PCT/DE2003/001230 patent/WO2003103897A2/en not_active Application Discontinuation
- 2003-04-11 EP EP03724866A patent/EP1513651B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03103897A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3479957A4 (en) * | 2016-12-16 | 2020-06-03 | Miretec Co., Ltd. | Rotation device |
Also Published As
Publication number | Publication date |
---|---|
CN1630571B (en) | 2011-01-26 |
EP1513651B1 (en) | 2013-01-09 |
CN1630571A (en) | 2005-06-22 |
DE10225051A1 (en) | 2004-01-08 |
WO2003103897A3 (en) | 2004-02-05 |
WO2003103897A2 (en) | 2003-12-18 |
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