WO2003015987A1 - Schleifblatträger und handschleifmaschine - Google Patents
Schleifblatträger und handschleifmaschine Download PDFInfo
- Publication number
- WO2003015987A1 WO2003015987A1 PCT/DE2002/002778 DE0202778W WO03015987A1 WO 2003015987 A1 WO2003015987 A1 WO 2003015987A1 DE 0202778 W DE0202778 W DE 0202778W WO 03015987 A1 WO03015987 A1 WO 03015987A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clamping
- machine tool
- grinding
- active
- hand machine
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
- B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of 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
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
Definitions
- the invention is based on a hand-held grinding machine tool according to the preamble of claim 1.
- an orbital sander with a sanding plate for receiving an exchangeable sanding sheet is known, which is supported with its back against the underside of the sanding plate and can be clamped on the upper side thereof.
- the operator must use both hands to clamp the sanding sheet, and the handheld power tool should be held on a firm surface as far as possible. Insert one end of the sanding sheet with one hand into a slot between an open jaw and the top of the sanding sheet holder and hold the jaw open with the other hand in the release position until the end of the sanding sheet is fully inserted. After releasing the clamping jaw, it closes by spring force and reaches its clamping position, in which the end of the sanding sheet is securely clamped against loss.
- the sanding sheet is automatically re-tensioned to a certain extent by the rotatably suspended jaw rolling away from the end of the sanding sheet and taking it with it - due to the oblique pressure surface on the top of the sanding sheet carrier.
- the grinding hand machine tool according to the invention with the characterizing features of claim 1 has the advantage that the grinding sheet can be tensioned to the tear limit by conveniently inserting it into the clamping device by its clamping movement.
- the sanding sheet can be fixed so tightly between the two clamping points or on the working surface of the sanding support that the relative movement between the sanding sheet holder and the sanding sheet is minimal during sanding.
- the result is a higher stock removal rate due to the higher overall efficiency of the hand-held grinding machine tool.
- one of the gill means is designed as pliers and has clamping jaws between which an end of the sanding sheet can be clamped and that the tong together with the clamped end of the sanding sheet can be moved about a pivot axis and can be locked in an end position, is a convenient and effective means of clamping with simple means subsequent tightening of the sanding sheet.
- the pliers have the advantage that all sanding sheet thicknesses can be clamped with maximum clamping force, because a long closing path sensitively compensates for all differences in sanding sheet thickness and ensures an unprecedented high clamping force.
- there is a high tolerance for different lengths of the sanding sheets because they find space in the ring-shaped active jaws and protruding sanding sheet ends can be easily accommodated in the pliers. Because one of the clamping jaws is designed as an active jaw and the other as a passive jaw, a simply constructed, powerful clamping clamping device is created.
- the grinding hand machine tool can be easily equipped with sanding sheets and is easy to operate.
- the clamping clamping device is so simple that known grinding hand-held machine tools can be converted to this new clamping clamping device.
- the clamping force at the end of the sanding sheet can be defined and the tightening of the sanding sheet can be determined up to the tear limit.
- the surfaces of the active and passive jaws have a high roughness, a high coefficient of friction and high deformation stability because they are made of metal ensures a particularly high clamping effect on the sanding paper.
- the fact that the passive jaw has a continuous longitudinal notch improves the grip between the passive jaws and the sanding paper and increases the clamping effect.
- Fig. 1 is a schematic side view of the kinematic
- Fig. 2 is a spatial view of the rear area of the
- Fig. 4 is a side view according to Figure 2 without sanding sheet.
- the hand-held grinding machine tool 10 shown in FIG. 1, designed as an orbital sander, does not have a housing 12 handle and the electric motor arranged therein as well as in the lower area a sanding sheet carrier 14, which can be driven in a motor-driven manner relative to the housing 12 and can thereby achieve abrasive removal on a workpiece with a sanding sheet 16 held on its working surface 15.
- the resulting sanding dust is blown out or extracted through the intake port 120.
- the sanding sheet ends 17, 19 of the sanding sheet 16 are pretensioned on the upper side 13 of the sanding sheet carrier 14 with clamping means 20 and at the back with clamping tensioning means 34 taut and slip-free relative to the working surface 15.
- an angle lever 20 which is rotatable about a pivot axis 24, can be spring-loaded against the end of the sanding sheet 19 and clamps it against a latching surface 23 on the upper side 13 of the sanding sheet carrier 14.
- a pair of pliers 34 arranged on the sanding sheet carrier 14 is arranged with a clamping lever 35 with curved active jaws 36 and a handle 39, which form a two-armed lever which can be pivoted about a pivot axis 40.
- a clamping lever 37 which forms the passive jaw, is supported on the inner contour of the active jaw 36 when the grinding sheet 16 is clamped and tensioned.
- the sanding paper 17 is inserted and held between the passive jaws 38 and the active jaws 36.
- the clamping lever 35 In the clamping position of the pliers 34, the clamping lever 35 assumes an end position in which it is held in the locking groove 47 of the rear or side locking tab 48 by locking the handle 39. By pushing the locking tab 48 against the spring 49 or by pivoting the handle 39 out of the locking groove 47, the tensioning lever 35 is released and can be spring-biased to pivot back into its open position. Passive jaws 38 follow it - acted upon by a further spring 44 (FIG. 4) - into their own end position. The clamping lever 35 continues to rotate until its stop surface 51 comes to rest on the inside of the passive jaw 38. In this position, the pliers 34 are wide open and the distance between the active and the passive jaws 36, 38 is so large that the sanding paper end 17 shown in dashed lines can be inserted in a virtually blind manner.
- the kinematic schematic diagram of the pliers 34 shows the spring means 42, 44 particularly clearly, which pretension the pliers 34 into the “open” position and also determine the clamping force between active 36 and passive jaws 38.
- the opposite end of the grinding wheel 19 is to be clamped in the conventional clamping mechanism with a two-armed, spring-loaded lever 20 so that the other grinding wheel end 17 can be moved and fixed with the pliers 34 in the subsequent clamping step.
- the passive jaw 38 is held under prestress by a compression spring 44, which determines the clamping force between the active 36 and the passive jaw 38. If the clamping lever 35 is released from its clamping position by releasing the clamping tab 48 and swiveled about the axis 40 when changing the sanding sheet, the distance between the clamping points of the sanding papers 17, 19 becomes shorter again, so that the sanding sheet 16 relaxes and loosens and is then easily removable ,
- Fig. 2 shows an enlarged view of another embodiment of the invention of the clamping and tensioning device arranged at the rear end of the housing 12 near the suction nozzle 120, i.e. the pliers 34 when inserting the sanding paper end 17.
- a leg spring 42 can be seen which biases the tensioning lever 35 into the "open" positions.
- Another such leg spring is also - not shown with - arranged for biasing the passive jaw 38, the force of which must be overcome when the pliers 34 are closed in order to pivot the passive jaws 38 about the pivot axis 40 into the clamping position. This makes it clear that the clamping force of the pliers 34 is determined by the dimensioning and prestressing of this spring.
- FIG. 3 shows the pliers 34 in the clamping position, it being clearly recognizable that the sanding sheet 16 is tightened on the left edge of the sanding pad 18 in the viewing direction in such a way that the sanding pad 18, which is angular at this point, is rounded by being compressed.
- FIG. 4 shows the side view according to FIG. 3, some of the details described in relation to FIG. 1, which become particularly clear, in particular the ejection spring 50, against which the handle 39 of the tensioning lever 35 comes to rest in its tensioned position. Pretensioned when the clamping lever 35 engages in its clamping position, it ejects it upwards when it is released from the clamping position and facilitates opening. NEN of the pliers 34. In addition, a clamping groove 47 can be seen in the gripping area of the passive jaw 38, through which the sanding sheet can be clamped particularly firmly.
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)
- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/398,465 US6857948B2 (en) | 2001-08-10 | 2002-07-27 | Abrasive strip carrier and hand sander |
DE50213332T DE50213332D1 (de) | 2001-08-10 | 2002-07-27 | Schleifblatträger und handschleifmaschine |
EP02764530A EP1419033B1 (de) | 2001-08-10 | 2002-07-27 | Schleifblatträger und handschleifmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139547.7 | 2001-08-10 | ||
DE10139547A DE10139547A1 (de) | 2001-08-10 | 2001-08-10 | Schleifhandwerkzeugmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003015987A1 true WO2003015987A1 (de) | 2003-02-27 |
Family
ID=7695170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/002778 WO2003015987A1 (de) | 2001-08-10 | 2002-07-27 | Schleifblatträger und handschleifmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6857948B2 (de) |
EP (1) | EP1419033B1 (de) |
CN (1) | CN100522474C (de) |
AT (1) | ATE424280T1 (de) |
DE (2) | DE10139547A1 (de) |
WO (1) | WO2003015987A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004016390A1 (de) * | 2002-07-16 | 2004-02-26 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10353682A1 (de) * | 2003-11-17 | 2005-06-16 | Robert Bosch Gmbh | Handschleifwerkzeug |
DE102004030450A1 (de) * | 2004-06-24 | 2006-01-12 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine |
US7101267B2 (en) * | 2004-11-16 | 2006-09-05 | Choon Nang Electrical Appliance Mfy., Ltd. | Tool holder for power tool |
US7182681B2 (en) * | 2005-04-29 | 2007-02-27 | 3M Innovative Properties Company | Sanding tool |
US7347211B1 (en) * | 2005-05-03 | 2008-03-25 | Elizabeth Macklin | Electrically operated sander for removing calluses and increasing circulation |
US7134951B1 (en) | 2005-12-28 | 2006-11-14 | Leon Jess M | Sheet holder for abrasive sheets |
DE102006035977A1 (de) * | 2006-08-02 | 2008-02-07 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine mit neuer Schleifblattzugspannung |
CN201493733U (zh) | 2009-08-03 | 2010-06-02 | 南京德朔实业有限公司 | 砂光机 |
CN102328280A (zh) * | 2011-10-11 | 2012-01-25 | 吴江市三达五金工具厂 | 磨砂工具 |
DE102011084591A1 (de) * | 2011-10-17 | 2013-04-18 | Robert Bosch Gmbh | Werkzeugmaschinenspannvorrichtung |
CN102729224B (zh) * | 2012-07-05 | 2016-04-27 | 南京德朔实业有限公司 | 具有辅助弹出电池包功能的电动工具 |
CZ2013107A3 (cs) * | 2013-02-15 | 2014-08-27 | Petr Froněk | Bruska pro broušení zakřivených ploch |
CN105922107A (zh) * | 2016-06-29 | 2016-09-07 | 苏州博来喜电器有限公司 | 应用于砂光机中的底板组件 |
CN105922106A (zh) * | 2016-06-29 | 2016-09-07 | 苏州博来喜电器有限公司 | 手持式砂光机 |
US10076832B2 (en) * | 2016-07-27 | 2018-09-18 | Robert Bosch Tool Corporation | Accessory system for a power tool |
WO2023050451A1 (en) * | 2021-10-01 | 2023-04-06 | Techtronic Cordless Gp | Sander including sheet guide and clamp |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3349523A (en) * | 1965-05-17 | 1967-10-31 | Alma A Hutchins | Clip for sanding tool or the like |
US3540161A (en) * | 1966-05-25 | 1970-11-17 | Wen Products Inc | Vibratory tool |
DE2616520A1 (de) * | 1976-04-14 | 1977-11-03 | Bosch Gmbh Robert | Schwingschleifer mit staubabsaugung |
US4077165A (en) * | 1976-11-26 | 1978-03-07 | Hutchins Alma A | Abrading tool clip with automatic take-up |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3571986A (en) * | 1969-05-29 | 1971-03-23 | Roy J Champayne | Shoe for rubbing machine |
US3822518A (en) * | 1972-09-07 | 1974-07-09 | Rodac Pneumatic Tools | Sanding shoe and clip therefor |
DE2511392C2 (de) * | 1975-03-15 | 1982-09-23 | Robert Bosch Gmbh, 7000 Stuttgart | Schwingschleifer mit Staubabsaugung |
US4475317A (en) * | 1983-11-28 | 1984-10-09 | The Singer Company | Paper retainer for a sanding device |
US5616072A (en) * | 1990-11-23 | 1997-04-01 | Robert Bosch Gmbh | Device for clamping sandpaper on a vibrating sander |
IT1298433B1 (it) | 1997-02-27 | 2000-01-10 | Bosch Gmbh Robert | Utensile elettrico portatile in particolare smerigliatrice |
US5902176A (en) * | 1997-10-07 | 1999-05-11 | Chen; Kun-You | Clamping device for a sanding tool |
DE20004223U1 (de) * | 1999-10-29 | 2000-08-24 | Wolters Peter Werkzeugmasch | Vorrichtung zur Entnahme von Halbleiterscheiben aus den Läufer-Scheiben in einer Doppelseiten-Poliermaschine |
DE10046065A1 (de) * | 2000-09-18 | 2002-03-28 | Hilti Ag | Elektrowerkzeug mit Klemmeinrichtung |
-
2001
- 2001-08-10 DE DE10139547A patent/DE10139547A1/de not_active Ceased
-
2002
- 2002-07-27 US US10/398,465 patent/US6857948B2/en not_active Expired - Fee Related
- 2002-07-27 EP EP02764530A patent/EP1419033B1/de not_active Expired - Lifetime
- 2002-07-27 WO PCT/DE2002/002778 patent/WO2003015987A1/de active Application Filing
- 2002-07-27 CN CNB028024958A patent/CN100522474C/zh not_active Expired - Fee Related
- 2002-07-27 DE DE50213332T patent/DE50213332D1/de not_active Expired - Lifetime
- 2002-07-27 AT AT02764530T patent/ATE424280T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3349523A (en) * | 1965-05-17 | 1967-10-31 | Alma A Hutchins | Clip for sanding tool or the like |
US3540161A (en) * | 1966-05-25 | 1970-11-17 | Wen Products Inc | Vibratory tool |
DE2616520A1 (de) * | 1976-04-14 | 1977-11-03 | Bosch Gmbh Robert | Schwingschleifer mit staubabsaugung |
US4077165A (en) * | 1976-11-26 | 1978-03-07 | Hutchins Alma A | Abrading tool clip with automatic take-up |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004016390A1 (de) * | 2002-07-16 | 2004-02-26 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine |
US7131899B2 (en) | 2002-07-16 | 2006-11-07 | Robert Bosch Gmbh | Manual sanding machine tool |
Also Published As
Publication number | Publication date |
---|---|
ATE424280T1 (de) | 2009-03-15 |
US6857948B2 (en) | 2005-02-22 |
CN1464812A (zh) | 2003-12-31 |
CN100522474C (zh) | 2009-08-05 |
EP1419033B1 (de) | 2009-03-04 |
EP1419033A1 (de) | 2004-05-19 |
US20040014410A1 (en) | 2004-01-22 |
DE50213332D1 (de) | 2009-04-16 |
DE10139547A1 (de) | 2003-02-20 |
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