EP3016781A1 - Tool holder and hand-held sanding machine - Google Patents
Tool holder and hand-held sanding machineInfo
- Publication number
- EP3016781A1 EP3016781A1 EP14736356.8A EP14736356A EP3016781A1 EP 3016781 A1 EP3016781 A1 EP 3016781A1 EP 14736356 A EP14736356 A EP 14736356A EP 3016781 A1 EP3016781 A1 EP 3016781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool holder
- tool
- base body
- elastically yielding
- grinding machine
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
-
- 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
- B24B23/005—Auxiliary devices used in connection with portable grinding machines, e.g. holders
-
- 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
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/142—Wheels of special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
Definitions
- the present invention relates to a tool holder for receiving a tool for machining a workpiece surface, in particular a tool holder of a trained as a so-called long-neck sander grinding machine.
- a rigid base body may be provided on which a tool, in particular a grinding wheel, can be arranged.
- the present invention has for its object to provide a tool holder for receiving a tool for machining a workpiece surface, by means of which a low-vibration and comfortable workpiece machining is possible.
- a tool holder for receiving a tool for machining a workpiece surface, wherein the tool holder comprises a disk-shaped base body, which has a fixing portion for fixing the tool holder on a machine tool and at least one elastically yielding deformation section.
- the basic body of the tool holder according to the invention has a fixing portion and at least one elastically yielding deformation portion, vibrations occurring during operation of the machine tool can be preferably reduced. This allows a particularly comfortable workpiece machining done.
- the at least one elastically yielding deformation section is preferably yielding in a machining operation of the machine tool.
- the basic body and / or the tool can be adapted to a workpiece surface by means of the at least one elastically yielding deformation section.
- an oblique orientation of the tool holder relative to the workpiece surface can be at least partially compensated.
- At least one elastically yielding deformation section of the main body is substantially annular.
- At least one elastically yielding deformation section of the main body is formed substantially annular.
- At least one elastically yielding deformation section is preferably formed in a circumferential direction, in particular periodically, with varying yielding.
- At least one elastically yielding deformation section is designed to be uniformly yielding in the circumferential direction.
- the attachment portion of the base body is preferably arranged centrally on the base body.
- the attachment portion is arranged in the region of a rotation axis of the tool holder.
- At least one elastically yielding deformation section of the basic body preferably surrounds the fastening section of the basic body at least approximately concentrically.
- the attachment portion and / or the at least one elastically yielding deformation portion are preferably formed substantially rotationally symmetrical about the axis of rotation of the tool holder.
- At least one elastically yielding deformation section is formed in the base body by recesses and / or recesses, in particular by slot-shaped passage openings and / or by round passage openings.
- At least one elastically yielding deformation section is formed by curved slot-shaped passage openings, for example by circular section-shaped, involute section-shaped and / or spiral section-shaped passage openings, in the base body.
- At least one elastically yielding deformation section is surrounded by a, in particular annular, for example annular, material thickening of the base body.
- the material thickening is preferably a circumferential material thickening in the circumferential direction.
- the base body has a plurality of elastically yielding deformation sections.
- the deformation sections preferably have, independently of one another, one or more features and / or advantages which are described in connection with the at least one deformation section.
- the main body comprises a plastic material or is formed from a plastic material.
- the base body comprises a metallic material or is formed from a metallic material.
- the tool holder preferably comprises a directly or indirectly fixed to the base body, in particular adhered, adhesive layer for attaching a tool.
- the tool is in particular an abrasive, for example a grinding wheel.
- the adhesive layer preferably comprises a foam material or is formed from a foam material.
- the tool is preferably releasably fixable by means of a Velcro connection to the adhesive layer.
- the tool holder comprises a damping layer arranged between the base body and the tool for damping vibrations.
- the damping layer preferably comprises a foam material or is formed from a foam material.
- the adhesive layer is a different position from the damping layer.
- the adhesive layer and the damping layer are formed by a single layer, in particular of a foam material.
- the base body, an adhesive layer of the tool holder and / or a tool which can be received by means of the tool holder are preferably at least approximately rotationally symmetrical and / or point-symmetrical, in particular with respect to a rotational axis of the tool holder formed.
- At least one elastically yielding deformation section is surrounded by at least one stiffening section or stabilization section of the main body.
- At least one elastically yielding deformation section is surrounded annularly by at least one stiffening section or stabilization section of the base body.
- the at least one stiffening section or stabilization section of the base body is preferably designed such that it retains a ring shape lying in a plane even with local force and / or deformation of the at least one elastically yielding deformation section. In this way, in particular an optimized grinding result can be achieved if the tool holder is arranged on a grinding machine and used for surface grinding.
- At least one stiffening section or stabilization section of the base body is formed by one or more thickened portions of the base body.
- At least one stiffening section or stabilization section of the main body is formed by one or more annularly closed material thickenings of the main body.
- the tool holder is particularly suitable for use on a hand-held grinding machine or as part of a hand-held grinding machine.
- the present invention therefore also relates to a hand-held grinding machine comprising a tool holder according to the invention.
- the hand-held grinding machine preferably has one or more of the features and / or advantages described in connection with the tool holder according to the invention.
- the hand-held grinding machine further comprises:
- a holding device for holding the grinding machine, a drive motor and a tool head, on which the tool holder is arranged or can be arranged,
- the holding means comprises a substantially tubular rod having a proximal end and a distal end
- tool head is located at the distal end
- the grinding machine comprises a transmission shaft, which connects the drive motor for torque transmission with a tool holder of the tool head and runs at least in sections within the tubular rod.
- the hand-held grinding machine is designed in particular as a so-called long-necked sander.
- the tool holder according to the invention and / or the hand-held grinding machine according to the invention can have one or more of the features and / or advantages described below:
- the main body of the tool holder is preferably a stabilizing element, which receives and forwards forces during operation of the grinding machine, in particular transmits a rotational movement of a drive shaft (transmission shaft) of a drive motor to the arranged on the body tool.
- a drive shaft transmission shaft
- the fastening portion of the base body is preferably arranged on a tool head of the machine tool, in particular the grinding machine, for example, rotatably connected to the drive shaft.
- the tool holder is in particular displaceable in rotation.
- an eccentric and / or concentric rotational movement about an axis of rotation of the transmission shaft (drive shaft) may be provided.
- An adhesive layer and / or a damping layer of the tool holder can be glued onto the base body or, in particular in the form of a pad, screwed on.
- the adhesive layer is preferably provided with a surface facing away from the base body, which can interact with a grinding side remote from the surface of the tool in the form of a hook and loop fastener.
- Vibrations occurring during operation of the grinding machine are preferably damped by the damping layer and / or the adhesive layer. Residual vibrations can, however, be transferred to the grinding machine and perceived as a rough running of the grinding machine by a user.
- the tool holder according to the invention in particular by means of the at least one elastically yielding deformation section of the disk-shaped base body, a reduction of the transmitted vibrations and thus a smooth running of the machine tool, in particular the grinding machine, can be made possible.
- the main body may be formed, for example, as a carrier plate, in particular as a plastic plate.
- At least one elastically yielding deformation section is formed by, in particular arcuate, slots or grooves in the base body.
- At least one elastically yielding deformation section preferably allows a spring action of the base body, in particular while maintaining a torsional rigidity, preferably in the radial direction and / or in the circumferential direction, for transmitting the rotary movement of the drive shaft (transmission shaft) to the tool.
- the recesses in particular the passage openings, by means of which preferably at least one elastically yielding deformation section is formed, may for example be arranged in an inner region of the base body and thus be designed in particular closed.
- the recesses forming this deformation section in particular passage openings, extend as far as an outer edge.
- the outer edge of the body is thus preferably, in particular periodically, interrupted by means of these passage openings.
- FIG. 1 is a schematic vertical section through a first embodiment of a tool holder for receiving a tool for loading Working a workpiece surface, in which a substantially solid body is provided;
- FIG. 2 shows a schematic plan view of an upper side of a basic body of a second embodiment of a tool holder, in which an elastically yielding deformation section is formed by means of passage openings;
- FIG. 3 is a schematic plan view corresponding to FIG. 2 of an upper side of a basic body of a third embodiment of a tool holder, in which two elastically yielding deformation sections are provided.
- a first embodiment of a tool receptacle designated as a whole as 100 in FIG. 1 serves to receive a tool 102 for machining a workpiece surface.
- the tool holder 100 may in particular be part of a hand-held grinding machine 104.
- the grinding machine 104 is in particular a so-called long-necked sander.
- the tool holder 100 makes it possible to receive a tool 102 embodied as a grinding wheel 106.
- the tool holder 100 comprises a base body 108 and an adhesive layer 110 for this purpose.
- the main body 108 is formed substantially disc-shaped and formed for example of a plastic material.
- the base body 108 comprises a fastening section 112, which is arranged centrally on the base body 108.
- the base body 108 and thus also the entire tool holder 100 can be fixed to a tool head (not shown) of the grinding machine 104.
- the attachment portion 112 and the entire base body 108 are preferably rotationally symmetrical with respect to a rotation axis 114 of the tool holder 100.
- the entire tool holder 100 including a tool 102 arranged thereon, is preferably rotatable about the axis of rotation 114 during operation of the grinding machine 104.
- the adhesive layer 110 is preferably glued to the base body 108. However, it can also be provided that the adhesive layer 110 is formed as a pedestal and screwed to the base body 108.
- the adhesive layer 110 is formed in particular by an adhesive element 116.
- the adhesive element 116 is formed for example of a foam material and thus formed elastically yielding.
- the adhesive element 116 forms on the one hand the adhesive layer 110 for attaching the tool 102. On the other hand, the adhesive element 116 forms a
- Damping layer 118 for damping vibrations that may occur during operation of the grinding machine 104.
- the adhesive element 116 preferably has, on a side facing away from the main body 108, a surface 120 which has a grinding side 122 the tool 102 facing away from the surface 124 of the tool 102 is detachably connectable.
- the surfaces 120, 124 form a releasable hook-and-loop fastener connection.
- a second embodiment of a tool holder 100 shown in FIG. 2 differs from that shown in FIG. 1 essentially in that the base body 108 has an elastically yielding deformation section 126.
- the deformation portion 126 is formed concentrically with the attachment portion 112 and surrounds the attachment portion 112 substantially annularly.
- the deformation section 126 is thus a deformation section 126 which extends annularly with respect to a circumferential direction 128.
- the deformation portion 126 is disposed outside of the attachment portion 112.
- the deformation portion 126 is formed by a plurality of recesses 132.
- the recesses 132 are circular passage openings 134 and / or slot-shaped passage openings 134.
- the slot-shaped passage openings 134 are, in particular, curved slot-shaped passage openings 134, for example circular segment-shaped, circle involute section-shaped or spiral-section-shaped passage openings 134.
- the base body 108 can be elastically deformed and reversibly deformed in this deformation section 126.
- the base body 108 can be resiliently deformed in the region of the deformation section 126.
- the deformation portion 126 is surrounded by a substantially annular material thickening 136.
- the material thickening 136 is in this case arranged with respect to the radial direction 130 on a side of the deformation section 126 facing away from the fastening section 112.
- An essentially flat, uninterrupted section 138 of the main body 108 adjoins this material thickening 136 in the radial direction 130 towards the outside.
- the deformation section 126 in the case of the deformation section 126 shown in FIG. 2 illustrated second embodiment of the tool holder 100 thus the material thickening 136, the flat portion 138 and the outer edge 140 together relative to the mounting portion 112 movable, in particular elastically yielding arranged.
- the tool holder 100 and the tool 102 arranged thereon can thus be specifically deformed so that an optimum adaptation of the tool 102 to a workpiece surface to be machined results.
- a third embodiment of a tool holder 100 shown in FIG. 3 essentially differs from the second embodiment shown in FIG. 2 in that, in addition to the deformation section 126, which is arranged between the material thickening 136 which is located in the radial direction 130 and the fastening section 112, a second elastically yielding deformation portion 126 is provided.
- the second elastically yielding deformation section 126 is also formed by means of recesses 132, in particular by means of slot-shaped passage openings 134.
- the slot-shaped through openings 134 are in particular substantially circular-segment-shaped, involute-segment-shaped or spiral-section-shaped.
- the passage openings 134 extend, starting from the deformation section 126 located in the radial direction 130 through both material thickenings 136 and the flat section 138, as far as the outer edge 140.
- the outer edge 140 is interrupted in particular periodically by means of the slot-shaped passage openings 134 of the second deformation section 126.
- This second deformation section 126 By means of this second deformation section 126, a further elastic deformation of the base body 108 during operation of the grinding machine 104 can be made possible.
- the in Fig. 3 illustrated third embodiment of the tool holder 100 in terms of design and function with the in Fig. 2 illustrated second embodiment, so that reference is made to the above description thereof in this regard.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013213272.7A DE102013213272A1 (en) | 2013-07-05 | 2013-07-05 | Tool holder and hand-held grinding machine |
PCT/EP2014/063996 WO2015000922A1 (en) | 2013-07-05 | 2014-07-01 | Tool holder and hand-held sanding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3016781A1 true EP3016781A1 (en) | 2016-05-11 |
Family
ID=51136458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14736356.8A Ceased EP3016781A1 (en) | 2013-07-05 | 2014-07-01 | Tool holder and hand-held sanding machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US9718169B2 (en) |
EP (1) | EP3016781A1 (en) |
CN (1) | CN105263676A (en) |
DE (1) | DE102013213272A1 (en) |
WO (1) | WO2015000922A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015113190A1 (en) * | 2015-08-11 | 2017-02-16 | Festool Gmbh | Sanding pad and thus equipped grinding machine |
WO2024073562A1 (en) * | 2022-09-30 | 2024-04-04 | Jason Brouk | Sander flex pad for rotary floor sander |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2749681A (en) * | 1952-12-31 | 1956-06-12 | Stephen U Sohne A | Grinding disc |
US3395417A (en) * | 1966-04-05 | 1968-08-06 | Formax Mfg Corp | Backup pad assembly |
DE6809106U (en) * | 1968-11-28 | 1969-04-24 | Duerr O Fa | SANDING DEVICE WITH ELASTIC SANDING DISC FOR SANDING MACHINES, IN PARTICULAR AUTOMATIC PAINT SANDING MACHINES |
FR2140917A6 (en) * | 1971-06-11 | 1973-01-19 | Spam | |
US3754359A (en) * | 1970-09-16 | 1973-08-28 | Spam D Avray | Abrasion tools |
US4287685A (en) * | 1978-12-08 | 1981-09-08 | Miksa Marton | Pad assembly for vacuum rotary sander |
US4683683A (en) * | 1985-08-19 | 1987-08-04 | Aleck Block | Abrasive material mounting structure |
US4932163A (en) * | 1989-08-29 | 1990-06-12 | Chilton Douglas L | Dust control system for an abrasive grinder |
DE4136169C2 (en) * | 1991-11-02 | 1993-11-18 | Aero Grip Ag Luxemburg Luxembo | Working wheel arrangement |
US5458532A (en) * | 1994-01-12 | 1995-10-17 | Cannone; Salvatore L. | Undulating edged pad holder for rotary floor polishers |
US5807161A (en) * | 1996-03-15 | 1998-09-15 | Minnesota Mining And Manufacturing Company | Reversible back-up pad |
EP0836911A1 (en) * | 1996-10-11 | 1998-04-22 | Sandro Giovanni Giuseppe Ferronato | Backup pad for a flexible grinding disc |
GB9703130D0 (en) * | 1997-02-14 | 1997-04-02 | Renwick Richard | Method of attaching a cleaning pad to a machine |
DE19707445A1 (en) * | 1997-02-25 | 1998-08-27 | Hilti Ag | Cup-shaped grinding wheel |
US5989112A (en) * | 1998-05-11 | 1999-11-23 | Norton Company | Universal abrasive disc |
US6640377B2 (en) * | 2000-03-28 | 2003-11-04 | Dedication To Detail, Inc. | Quick release buffing pad assembly |
US6846223B2 (en) * | 2000-12-09 | 2005-01-25 | Saint-Gobain Abrasives Technology Company | Abrasive wheels with workpiece vision feature |
US20040166788A1 (en) * | 2003-02-20 | 2004-08-26 | George Travis | Sanding disc |
DE20312499U1 (en) * | 2003-08-11 | 2004-12-16 | Ufi Schleiftechnik Gmbh & Co. Kg | Sanding disc for grinding machine |
DE10354653A1 (en) * | 2003-11-22 | 2005-06-16 | Robert Bosch Gmbh | Sanding pad for a hand grinder |
DE102006024842A1 (en) * | 2006-05-24 | 2007-11-29 | Monti-Werkzeuge Gmbh | Rotary tool for surface treatment |
WO2008014807A1 (en) * | 2006-08-02 | 2008-02-07 | A & M Electric Tools Gmbh | Polishing tool |
US20080171498A1 (en) * | 2007-01-12 | 2008-07-17 | Dennis David Woods | Grinding Assemblies for use with Handheld Power Tools |
US8286291B2 (en) * | 2007-10-02 | 2012-10-16 | Dynabrade, Inc. | Eraser assembly for a rotary tool |
DE102008027141A1 (en) * | 2008-05-30 | 2009-12-03 | Flex-Elektrowerkzeuge Gmbh | Abrasive wheel for use in machine tool for grinding workpiece, has abrasive free regions arranged between adjacent abrasive segments, and extending from central opening to outer edge of wheel, and carrier made of flexible material |
DE102008060100B3 (en) * | 2008-11-25 | 2010-04-08 | Stein & Co Gmbh | treating disc |
DE102010003616A1 (en) * | 2010-04-01 | 2011-10-06 | Robert Bosch Gmbh | Holding body for flexible abrasive and grinding system |
WO2012020275A1 (en) * | 2010-08-10 | 2012-02-16 | Miksa Marton | Sanding apparatus |
EP2758210B1 (en) * | 2011-09-20 | 2016-05-18 | Robert Bosch GmbH | Retaining body for flexible grinding means, grinding system, and grinding tool |
DE102012213749A1 (en) | 2012-08-03 | 2014-02-06 | Robert Bosch Gmbh | Sanding pad spring plate |
-
2013
- 2013-07-05 DE DE102013213272.7A patent/DE102013213272A1/en not_active Withdrawn
-
2014
- 2014-07-01 EP EP14736356.8A patent/EP3016781A1/en not_active Ceased
- 2014-07-01 CN CN201480032481.2A patent/CN105263676A/en active Pending
- 2014-07-01 WO PCT/EP2014/063996 patent/WO2015000922A1/en active Application Filing
-
2015
- 2015-10-26 US US14/922,290 patent/US9718169B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015000922A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9718169B2 (en) | 2017-08-01 |
DE102013213272A1 (en) | 2015-01-08 |
US20160184973A1 (en) | 2016-06-30 |
WO2015000922A1 (en) | 2015-01-08 |
CN105263676A (en) | 2016-01-20 |
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