EP2125289A1 - Schleifteller für eine exzenterschleifmaschine - Google Patents
Schleifteller für eine exzenterschleifmaschineInfo
- Publication number
- EP2125289A1 EP2125289A1 EP07857778A EP07857778A EP2125289A1 EP 2125289 A1 EP2125289 A1 EP 2125289A1 EP 07857778 A EP07857778 A EP 07857778A EP 07857778 A EP07857778 A EP 07857778A EP 2125289 A1 EP2125289 A1 EP 2125289A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- sanding
- diameter
- pad
- mass
- 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
- 239000000463 material Substances 0.000 claims description 15
- 239000004033 plastic Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 3
- 239000000428 dust Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 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
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
-
- 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
-
- 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
Definitions
- the invention relates to a sanding pad for an eccentric sanding machine according to the preamble of claim 1.
- a known hand grinder designed as an eccentric sander (US Pat. No. 5,018,314) has a circular sanding pad which is mounted by means of a rotary bearing on an eccentric output shaft of an eccentric gear driven by an electric motor.
- the sanding pad comprises a support body and an abrasive carrier.
- the support body of the sanding pad has a flat plate and a right angle projecting from the plate, integral with the plate bearing spigot, in which the pivot bearing is inserted.
- the made of plastic, circular abrasive carrier is flat against the plate of the support body and overlaps with its correspondingly shaped edge of the plate of the support body like a clip.
- a known sanding pad for a hand grinder (EP 0 557 733 A1) has a support plate made of plastic, a foamed on the support plate cushion as a support for an abrasive and a steel disc arranged between them as a reinforcing member.
- the underside of the pad forms a flat support surface for a sanding sheet and is provided with Velcro strips on which adheres to the Abschleurliensen the sanding sheet.
- the support plate has on its upper side facing away from the sanding pad on a bearing surface surrounded by a centering ring for attaching the sanding pad to an eccentrically driven driver of an eccentric grinding machine.
- the eccentric component mass of the grinding disc is statically and dynamically stabilized by at least one balancing mass acting on the output shaft of the electric motor. Because the size of the Leveling compound is adapted to the mass of the sanding pad, only one and the same sanding pad can be operated on the eccentric sanding machine.
- the sanding pad according to the invention for an eccentric grinding machine has the advantage that it can be operated with the same eccentric grinding machine by the fact that the plate mass independent of the selected plate diameter, fixed value of grinding disc to achieve quality-optimal grinding results with different diameter and operated without this negative impact on the
- a grinding disc with a disc diameter of 150mm can be used for grinding large surfaces and a grinding disc with a disc diameter of 125mm can be used in the same eccentric grinding machine for grinding corners and concave surfaces.
- this has the advantage that he can use the same eccentric grinding a whole set of grinding pads with specially adapted to the type of grinding plate diameters, the machine maintains its good handling quality unchanged.
- the value of the plate mass fixed by the leveling compound in the eccentric grinding machine can be maintained independently of the plate diameter in various ways, e.g. according to an advantageous embodiment of the invention, characterized in that the sanding plate is designed with a sanding plate height, which is in inverse proportion to the diameter of the plate, which means that in finished the plate with a large plate diameter, the plate height is made small and vice versa in finished the sanding plate a small diameter, the plate height is made much larger.
- the sanding pad consists of at least two components, a support plate for attaching the sanding plate to the eccentric of the eccentric sanding machine and attached to the support plate sanding pad with a support surface for a releasably secured abrasive sheet.
- the sanding plate of the predetermined value of the plate mass regardless of the plate diameter thereby be complied with that the density of the support plate material and / or the pad material is in inverse proportion to the size of the plate diameter.
- the sanding pad with a large diameter thus has a sanding pad material with low density and the sanding pad in the design with a small plate diameter a fairly large density.
- the fixed predetermined value of the plate mass regardless of the plate diameter can be maintained by different choice of the material of the support plate and / or sanding pad.
- the material of the support plate and / or sanding pad can be used as a material for the support plate, a hard plastic and the abrasive cushion, a plastic foam, wherein the density of the hard plastic is adapted to the plate diameter.
- FIG. 2 shows a tool set of two grinding discs with different diameters for the eccentric grinding machine in FIG. 1, shown in plan view and in section along the line A-A.
- Fig. 1 is fragmentary and partially cut a hand-held eccentric grinding, hereinafter referred to as eccentric grinder, shown for performing grinding in side view.
- the eccentric grinder has a housing 11, which merges in the viewing direction to the left into a handle 12, on the underside of a switch button 13 for switching on and off of a recorded inside the housing 11 electric motor 14 is arranged.
- electric motor 14 On the output shaft 15 of the electric motor 14 is rotatably seated an impeller 16 of a suction fan, which is sucked off the grinding dust on grinding on the surface of a workpiece grinding dust and transported via a discharge port 17 in a dust collecting container.
- an eccentric recess 18 is provided, into which a at the Underneath the housing 11 protruding driver 19 is immersed, which is supported on two roller bearings 20, 21 on the inner wall of the eccentric recess 18.
- the rolling bearings 20, 21 takes place, depending on the bearing friction, the rotational drive of the driver 19.
- Rolling 20, 21 and driver 19 are held axially immovable in the eccentric recess 18.
- a flat bearing surface 191 is formed, to which a sanding pad 22 can be attached with a bearing surface 23 formed on its upper side.
- a disk brake 25 is secured against rotation against rotation, which hangs on the top of the sanding pad 22.
- the sanding pad 22 consists of two components, a support plate 26 made of a hard plastic and attached to the underside of the support plate 26 sanding pad 27.
- the contact surface 23 of the sanding pad 22 is formed centrally on the support plate 26.
- a support surface 271 is formed for a not shown abrasive sheet, which carries a Velcro covering 28 for attaching a velor back bearing sanding sheet.
- balancing mass In the sanding pad 22 through 27 and dust pad 27 through dust extraction openings 29 are present, through which the grinding dust is sucked into a formed in the housing 11, connected to the Ausblasstutzen 17 Staubansaughunt in which the impeller 16 rotates.
- the balance weight can be realized for example by a corresponding design of the impeller 16 of the suction fan.
- the sum of the masses of the existing balancing weights is referred to below as balancing mass.
- sanding discs with grinding surfaces of different sizes that is to say disc diameters of different sizes.
- a grinding disc with a disc diameter of 150mm is recommended for grinding larger, flat workpiece surfaces
- a grinding disc with a disc diameter of 125mm is recommended for grinding corners and concave surfaces.
- the plate mass of each grinding plate 22 has a fixed predetermined value, which is independent of the selected plate diameter.
- This value is determined by the existing in the eccentric disc balancing mass, which in turn is tuned to the unbalance operation of the eccentric grinder with a mounted on his driver 19, selected grinding plate 22 which is covered with an abrasive sheet.
- the sanding pad 22 is designed so that its center of gravity lies on the plate axis in a comparable distance from the contact surface 23 independent of the plate dimensions, ie the orbital sander always sees the same mass with the center of mass lying at the same location, irrespective of which sanding pad with which Plate diameter is attached to the driver 19.
- the sanding pad 22 is made so that the distance of the contact surface 23 of the abrasive sheet contact surface 271 is in inverse proportion to the plate diameter. Accordingly, the left in Fig. 2 sanding pad 22 with the larger diameter plate a much smaller axial plate height than the grinding disc 22 shown in Fig. 2 on the right with the smaller plate diameter. Additionally or alternatively, the density of the material of the support plates 26 is in inverse proportion to the size of the plate diameter. Thus, in the left in Fig. 2 sanding pad 22 with the larger diameter plate the support plate material has a significantly lower density than the support plate material in the right in Fig. 2 sanding disc with the smaller diameter plate.
- the support plate 26 of both sanding pad 22 is made of hard plastic, wherein the density of the plastic material in both sanding pad 22 is the same size or the density of the hard plastic in the larger diameter sanding pad 22 smaller than the density of the hard plastic in the smaller diameter sanding pad 22 is selected.
- the material for the sanding pad 27 consists in the latter case in both sanding pads 22 made of plastic foam.
- a metal insert may be embedded in the support plate 26 made of hard plastic of each grinding plate 22, a metal insert.
- the size of the metal insert is again in inverse proportion to the size of the plate diameter.
- smaller-diameter sanding pad 22 a much larger mass than the metal insert in the left in Fig. 2, larger diameter sanding pad 22nd
- the contact surface 23 for attaching the sanding pad 22 to the receiving surface 191 of the driver 19 is formed identical.
- the Staubabsaugöffhungen 29 are each adapted to the hole pattern of the predetermined for the disc diameter grinding blade.
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)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007007787A DE102007007787A1 (de) | 2007-02-16 | 2007-02-16 | Schleifteller für eine Exzenterschleifmaschine |
PCT/EP2007/064154 WO2008098637A1 (de) | 2007-02-16 | 2007-12-19 | Schleifteller für eine exzenterschleifmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2125289A1 true EP2125289A1 (de) | 2009-12-02 |
EP2125289B1 EP2125289B1 (de) | 2011-03-23 |
Family
ID=39296068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07857778A Active EP2125289B1 (de) | 2007-02-16 | 2007-12-19 | Werkzeugsatz für eine Exzenterschleifmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US8113921B2 (de) |
EP (1) | EP2125289B1 (de) |
CN (1) | CN101605631A (de) |
AT (1) | ATE502726T1 (de) |
DE (2) | DE102007007787A1 (de) |
RU (1) | RU2461454C2 (de) |
WO (1) | WO2008098637A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101890671B (zh) * | 2009-02-17 | 2014-05-28 | C.&E.泛音有限公司 | 用于振动驱动装置的磨削或磨光的工具 |
USD623034S1 (en) | 2009-12-18 | 2010-09-07 | Techtronic Power Tools Technology Limited | Tool arbor |
USD619152S1 (en) | 2009-12-18 | 2010-07-06 | Techtronic Power Tools Technology Limited | Adapter |
CN102107397B (zh) * | 2009-12-25 | 2015-02-04 | 3M新设资产公司 | 研磨砂轮的制造方法及研磨砂轮 |
USD658005S1 (en) * | 2010-07-09 | 2012-04-24 | Grace Manufacturing, Inc. | Culinary cutting blade |
USD646542S1 (en) | 2010-09-29 | 2011-10-11 | Milwaukee Electric Tool Corporation | Accessory interface for a tool |
USD651062S1 (en) | 2010-09-29 | 2011-12-27 | Milwaukee Electric Tool Corporation | Tool interface for an accessory |
USD653523S1 (en) | 2010-09-29 | 2012-02-07 | Milwaukee Electric Tool Corporation | Adapter for a tool |
USD651875S1 (en) | 2010-12-14 | 2012-01-10 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD651876S1 (en) | 2010-12-14 | 2012-01-10 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD651878S1 (en) | 2010-12-14 | 2012-01-10 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD651874S1 (en) | 2010-12-14 | 2012-01-10 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD651877S1 (en) | 2010-12-14 | 2012-01-10 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD652274S1 (en) | 2010-12-14 | 2012-01-17 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694597S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694599S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694598S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694076S1 (en) | 2012-06-25 | 2013-11-26 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
USD694596S1 (en) | 2012-06-25 | 2013-12-03 | Techtronic Power Tools Technology Limited | Universal interface for accessory blades |
DE102012223969A1 (de) * | 2012-12-20 | 2014-06-26 | Robert Bosch Gmbh | Handwerkzugmaschine mit elektronisch kommutiertem Motor und integrierter Elektronik |
US9555554B2 (en) | 2013-05-06 | 2017-01-31 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
WO2015164920A1 (en) * | 2014-05-01 | 2015-11-05 | Arbortech Industries Limited | Random orbital sander |
BR112016027187B1 (pt) | 2014-05-29 | 2022-04-12 | Saint-Gobain Abrasives, Inc. | Artigo abrasivo com um núcleo incluindo um material de polímero, roda abrasiva e seu método de preparação |
US10124463B2 (en) * | 2015-02-03 | 2018-11-13 | Johnny Blox, Llc | Sanding pad |
US11399639B1 (en) * | 2021-02-05 | 2022-08-02 | Harbor Freight Tools Usa, Inc. | Self-righting packaging for display of item with aperture |
KR102570519B1 (ko) * | 2021-05-11 | 2023-08-25 | 주식회사 디어포스 | 멀티홀사용가능 고 호환성 연마패드조립체 |
USD1021596S1 (en) * | 2024-01-04 | 2024-04-09 | Ningbo Deyan Technology Co., Ltd. | Grinding disc |
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US2685155A (en) * | 1951-04-28 | 1954-08-03 | Minnesota Mining & Mfg | Multiple center hole abrasive disk |
US2694886A (en) * | 1952-07-12 | 1954-11-23 | Allison Company | Abrasive cutting wheel |
US2726495A (en) * | 1952-10-04 | 1955-12-13 | Field Albert | Abrading implement |
US2919521A (en) * | 1958-09-25 | 1960-01-05 | Thomas M Durney | Internal grinder quill |
CH553621A (fr) * | 1972-10-23 | 1974-09-13 | Tatar Alexander | Procede pour l'affutage de forets a quatre faces et machine d'affutage pour la mise en oeuvre de ce procede. |
US3918216A (en) * | 1975-03-17 | 1975-11-11 | Corning Glass Works | Tubing severing method |
JPS52106504A (en) * | 1976-03-04 | 1977-09-07 | Bridgestone Corp | Radial pneumatic tire for rough ground having superior side cut resist ability |
US4052822A (en) * | 1976-03-15 | 1977-10-11 | Western Gear Corporation | Method and apparatus for abrasively cutting objects |
SU642139A1 (ru) * | 1977-03-17 | 1979-01-15 | Всесоюзный Заочный Инженерно-Строительный Институт | Плоскошлифовальна машина |
DE3518984A1 (de) * | 1985-05-25 | 1986-11-27 | Festo KG, 7300 Esslingen | Ausgewuchteter schwingschleifer |
DE3615799C2 (de) * | 1986-05-10 | 1994-10-13 | Bosch Gmbh Robert | Exzenterschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
DE3620136C5 (de) * | 1986-06-14 | 2007-01-11 | Robert Bosch Gmbh | Motorisch angetriebene Handschleifmaschine mit einem Exzenterantrieb |
US5018314A (en) | 1989-06-08 | 1991-05-28 | Makita Electric Works, Ltd. | Sander |
IL91283A0 (en) * | 1989-08-11 | 1990-03-19 | Gerard O Reilly | Grinding tool and spacer assembly for use therein |
DE3942301C1 (de) * | 1989-12-21 | 1991-02-14 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
US5332098A (en) * | 1991-06-24 | 1994-07-26 | Fisher Tool Co., Inc. | Portable preparation tool kit for automobile body work |
DE4137924C2 (de) * | 1991-11-18 | 1997-12-04 | Schaudt Maschinenbau Gmbh | Verfahren und Vorrichtung zum numerisch gesteuerten Schleifen von Nocken einer Nockenwelle |
DE4206022C2 (de) | 1992-02-27 | 1997-07-03 | Man Nutzfahrzeuge Ag | Aufprallvorrichtung für Nutzfahrzeuge |
DE4205977A1 (de) * | 1992-02-27 | 1993-09-02 | Bosch Gmbh Robert | Schleifteller aus mehreren werkstoffschichten |
DE4233728A1 (de) * | 1992-10-07 | 1994-04-14 | Bosch Gmbh Robert | Exzentertellerschleifer |
US6206771B1 (en) * | 1999-01-25 | 2001-03-27 | Dynabrade, Inc. | Balancer for orbital abrading machine |
DE19941620A1 (de) * | 1999-09-01 | 2001-03-08 | Bosch Gmbh Robert | Handwerkzeugmaschine |
US6494772B1 (en) * | 1999-11-30 | 2002-12-17 | Roger W. Barnes | Floor conditioning system |
US6368202B1 (en) * | 2000-10-18 | 2002-04-09 | Richard A. Kaiser | Rotary finishing tool and method of making the same |
US6905398B2 (en) * | 2001-09-10 | 2005-06-14 | Oriol, Inc. | Chemical mechanical polishing tool, apparatus and method |
US6974362B2 (en) * | 2002-05-14 | 2005-12-13 | Skf Autobalance Systems Ab | System and method for automatically compensating for unbalanced resistance forces |
DE10357145A1 (de) * | 2003-12-06 | 2005-06-30 | Robert Bosch Gmbh | Handschleifmaschine, Aufnahmeflansch für ein Schleifwerkzeug und Auswuchteinheit |
US7022002B2 (en) * | 2004-03-03 | 2006-04-04 | Dynabrade, Inc. | Modular counterweight apparatus for an orbital abrading machine |
DE102004035859A1 (de) | 2004-07-23 | 2006-02-16 | Robert Bosch Gmbh | Vorrichtung mit wenigstens zwei Auswuchtgewichten |
DE102005014045A1 (de) | 2005-03-23 | 2006-09-28 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem Schleifteller |
US7153199B1 (en) * | 2005-10-07 | 2006-12-26 | Dynabrade, Inc. | Light-weight modular counterweight apparatus for an orbital abrading machine |
-
2007
- 2007-02-16 DE DE102007007787A patent/DE102007007787A1/de not_active Withdrawn
- 2007-12-19 EP EP07857778A patent/EP2125289B1/de active Active
- 2007-12-19 DE DE502007006813T patent/DE502007006813D1/de active Active
- 2007-12-19 WO PCT/EP2007/064154 patent/WO2008098637A1/de active Application Filing
- 2007-12-19 RU RU2009134314/02A patent/RU2461454C2/ru not_active IP Right Cessation
- 2007-12-19 AT AT07857778T patent/ATE502726T1/de active
- 2007-12-19 CN CNA2007800513744A patent/CN101605631A/zh active Pending
- 2007-12-19 US US12/301,081 patent/US8113921B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008098637A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8113921B2 (en) | 2012-02-14 |
RU2009134314A (ru) | 2011-03-27 |
EP2125289B1 (de) | 2011-03-23 |
US20090209186A1 (en) | 2009-08-20 |
CN101605631A (zh) | 2009-12-16 |
WO2008098637A1 (de) | 2008-08-21 |
RU2461454C2 (ru) | 2012-09-20 |
DE502007006813D1 (de) | 2011-05-05 |
ATE502726T1 (de) | 2011-04-15 |
DE102007007787A1 (de) | 2008-08-21 |
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