CN1288406A - Power operated portable grinder - Google Patents
Power operated portable grinder Download PDFInfo
- Publication number
- CN1288406A CN1288406A CN99802097A CN99802097A CN1288406A CN 1288406 A CN1288406 A CN 1288406A CN 99802097 A CN99802097 A CN 99802097A CN 99802097 A CN99802097 A CN 99802097A CN 1288406 A CN1288406 A CN 1288406A
- Authority
- CN
- China
- Prior art keywords
- operated portable
- portable grinder
- emery wheel
- rotor journal
- eccentricity
- 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
- 238000000227 grinding Methods 0.000 claims abstract description 50
- 229910001651 emery Inorganic materials 0.000 claims description 64
- 238000003801 milling Methods 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- 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
Abstract
The invention relates to a power operated portable grinder (10) with a grinding wheel (34, 40) driven by an eccentric drive, especially a grinding wheel coupled to an eccentric pin (26, 28), such as an eccentric grinder or finishing sander. The aim of the invention is to provide means for simplifying the production and reducing the costs of such a grinder. To this end, the portable grinder (10) has several, especially two, common eccentric pins (26, 28) of different eccentricities.
Description
Prior art
The present invention relates to the motor-driven operated portable grinder of the described type of a kind of claim 1.
EP-patent 0,694 365 discloses a kind of operated portable grinder, and by changing different emery wheels, it both can be used as the super grinding milling drum, also can be used as eccentric wheel milling drum (Exzenterschleifer).First emery wheel links to each other with an operated portable grinder like this, and promptly this emery wheel carries out non-rotary orbital motion under super grinding milling drum pattern.Second emery wheel links to each other like this with operated portable grinder after disassembling first emery wheel, and promptly it had not only rotated under eccentric wheel milling drum pattern but also had carried out orbital motion simultaneously.Wherein, under eccentric wheel milling drum pattern, by rotating an orbital motion, its worn efficient is higher than the worn efficient under the super grinding milling drum pattern.
No matter known operated portable grinder is all to have identical eccentric stroke swing circle diameter in other words as the eccentric wheel milling drum or as the super grinding milling drum.Its size is compared with device before this, that use as just the super grinding milling drum and have been increased, and when the super grinding grinding, and obtainable surface quality compares that the speech difference is coarse in other words mutually.On the other hand, the swing circle diameter is too small in other words for the eccentric stroke of eccentric wheel milling drum, causes when the eccentric wheel grinding worn efficient relatively low.
Advantage of the present invention
Invention operated portable grinder with the described feature of claim 1, its advantage are no matter be under super grinding grinding or the eccentric wheel grinding condition, by the eccentric stroke of a plurality of selectable differences, can realize the best grinding capacity for grinding task at that time.Because operated portable grinder has at least two rotor journals, their degree of eccentricity difference is especially fixedly mounted jointly.Wherein, these two rotor journals each have an emery wheel of independent configuration.Here, eccentric stroke only can be by changing the emery wheel change.Thereby when using the super grinding emery wheel, the worn efficient that can reach is low but high surface quality is arranged; And use the eccentric wheel emery wheel can reach higher worn efficient, but surface quality so good when not reaching the super grinding grinding.
By two structure arrangements of axially going up adjacent different eccentric axis neck, make that its manufacturing is simple especially, and can either be under the super grinding grinding pattern, also can under eccentric wheel grinding pattern, carry out work with different eccentric strokes.Thereby, can realize more changeableization of grinding capacity with respect to existing operated portable grinder.
Because the emery wheel that rotor journal can be with different emery wheels, particularly have Different Weight and a basal plane is connected, operated portable grinder can be applicable to the condition of work that the grinding area is big and little better.
Because rotor journal has different diameters, and different emery wheels only needs match with the rotor journal of being joined, and can not take place owing to neglect and is not being connected of the emery wheel that disposes for its.Like this, just formed a kind of coding, got rid of the possibility that takes place to obscure between emery wheel by it.Its advantage is to avoid the unfavorable range of operation outside the performance optimum capacity to use in other words thus reliably.
Because rotor journal all is positioned on the free end of a fan of operated portable grinder, makes that the manufacturing of fan is simple, its medium plain emery wheel also can simple structure and is easy to install.
Because grinding wheel bearing is subjected to the support of rotor journal seat same axial supporting surface on the emery wheel rigging position, when grinding, the bending rigidity and the tilt-stable of emery wheel obviously are improved.Wherein the rotor journal as the grinding wheel bearing bearing block no longer bears bending load.
Because different emery wheel, the emery wheel that promptly is used for the emery wheel of super grinding and is used for eccentric mill are determined size like this, promptly each emery wheel quality is identical with the product of set eccentric stroke.Thereby, can guarantee operated portable grinder, no matter carry out super grinding grinding, or eccentric wheel grinding, all have best balance and friction.
Accompanying drawing
By means of an embodiment and affiliated accompanying drawing the present invention is further specified.Wherein,
Fig. 1 is the part vertical profile decomposing schematic representation of operated portable grinder of the present invention, and it has two removable emery wheels,
Fig. 2 is the operated portable grinder as the super grinding milling drum of part vertical profile,
Fig. 3 is the operated portable grinder of the present invention as the eccentric wheel milling drum of part vertical profile.
The embodiment explanation
The operated portable grinder 10 shown in the part has a casing 12 among Fig. 1.It has a not shown handle and a driven shaft 18, and switch is arranged on the handle, is used for the also unshowned motor of application drawing.Described driven shaft links to each other with motor, and can be placed in rotationally in the rolling bearing 20 around axis 19.
The lower end of driven shaft 18 does not have the centre bore 21 that is arranged in a fan 22 with relatively rotating.Have ventilation blade not shown further on the fan 22, blade is set at it and reaches on the face that deviates from it towards driven shaft 18.Fan 22 is diametrically opposed in casing 12 sealings, thereby does not have air-flow to pass it in the axial direction.Like this, it is towards the zone of driven shaft 18, for motor ventilation, play the effect of cooling fan; And deviate from the zone of driven shaft 18, be used for aspirating and grinding dirt bits are transported to one by a blast pipe 52 and can go by dirt bits container fixedly connected with it, that do not provide in the drawings as air exhauster.
The emery wheel 34 of the most close operated portable grinder 10 has elastic oscillation element (Schwingelement) 36.They can be fixed and be positioned in the receiving hole 37 on the casing 12.And as known in the super grinding milling drum, they stop emery wheel 34 rotations, but do not influence its around the movement.
Emery wheel 34 has a grinding wheel bearing 38 as rolling bearing structure in the centre, also have one with the coupling adapter ring 39 that join, concentric with the rotation 35 of emery wheel 34 mutually of ring in it is unshowned.The adapter ring 39 and second rotor journal 28 match, and on the rigging position of emery wheel 34, it surrounds this axle journal, has very little gap.The interior ring of rolling bearing 38 is also overlapping first and second rotor journals 26,28 with radial clearance at this, and is supported in the axial direction on the lower surface 53 of fan 22.Therefore, the position of emery wheel 34,40 is reliably when super grinding grinding or eccentric wheel grinding, is stable when the eccentric wheel grinding particularly, can not overturn.Here, the center of gravity of emery wheel 34,40 all is in the identical axial plane.
Emery wheel 34 has 46, one on a thread gluing layer and covers the abrasive disc 50 that is equipped with velvet layer 48 on overleaf and can be attached thereto and connect on it deviates from the lower surface of oscillating element 36.
On downward direction of observation, under emery wheel 34 second emery wheel 40 that can change it.Emery wheel 40 is used as eccentric emery wheel.Wherein, its grinding wheel bearing 42 and first rotor journal 26 match, thereby, on rigging position, it seamlessly encircles rotor journal 26 with its not shown interior ring and holds, and have radial clearance ground ring and hold second rotor journal 28, and be supported in end face on the axial support surface 53 of fan 22, can guarantee especially not tumble at this.
The screw 32 that will have packing ring 44 is screwed in the screwed hole 30, can emery wheel 40 is fixedly connected reliably on axially with respect to rotor journal 26.On its bottom surface, emery wheel 40 has a thread gluing layer 46, so that firmly fix covering the abrasive disc 50 that is equipped with velvet layer 48 on the back side.Emery wheel 40 and abrasive disc 50 are rounded, and (super grinding) emery wheel 34 can have round, leg-of-mutton or other polygonal basal plane.The abrasive disc 48 that is disposed is consistent with these basal planes.
Fig. 2 shows the operated portable grinder 10 combined with first kind of emery wheel 34, is used as the super grinding milling drum.Here, components identical no longer is repeated in this description among each and Fig. 1, it is pointed out that can clearly see here by axis 19 to the rotation 35 of emery wheel 34 or the relative very little degree of eccentricity e1 that constitutes to the distance at rotor journal 28 centers.
Fig. 3 shows operated portable grinder shown in Figure 1 10 and installs the situation of emery wheel 40 backs as the eccentric wheel milling drum.Equally, here also no longer element repeat specification to having illustrated among Fig. 1.Here it is to be noted, can be clear that, degree of eccentricity e2, promptly 40 the rotation 41 or to the distance at rotor journal 26 centers from axis 19 to emery wheel is roughly the twice of the super grinding milling drum degree of eccentricity among Fig. 2, is to have increased at least.Be also shown in, screw 32 is not that centering is settled for emery wheel 40, and just with respect to Fig. 2 medium plain emery wheel 34 centerings.
As seen, emery wheel 34 is different with 40 size with weight from Fig. 2 and Fig. 3.Perhaps or rather, the quality of super grinding emery wheel 34 is twices of eccentric grinding abrasive disk 40.Thereby, since when using emery wheel 34 degree of eccentricity half when using emery wheel 40, thereby under these two kinds of emery wheels, 34,40 conditions, obtain identical equilibrium condition.Like this, for two kinds of conditions of work of operated portable grinder 10, promptly as the eccentric wheel milling drum with as the super grinding milling drum, only passable once disposing with a unique balance mass.
Claims (12)
1. motor-driven operated portable grinder (10), have by eccentric drive, particularly can with machine lateral deviation axle neck (26,28) emery wheel (34 that is connected, 40), for example eccentric wheel milling drum or manual super grinding milling drum, it is characterized by: operated portable grinder (10) has a plurality of, two common rotor journals (26,28) particularly, their degree of eccentricity difference.
2. operated portable grinder as claimed in claim 1 is characterized by: these two rotor journals (26,28) are settled on axially successively continuously, particularly as the part of a fan (22).
3. operated portable grinder as claimed in claim 1 or 2 is characterized by: these rotor journals (26,28) can be connected with different emery wheels (34,40), and these emery wheels particularly have different quality and basal plane.
4. as one of above-mentioned claim described operated portable grinder, it is characterized by: each different emery wheel (34,40) can only match with a unique rotor journal (26,28).
5. as the described operated portable grinder of one of above-mentioned claim, it is characterized by: quality the amassing of the emery wheel (34) that matches with the long-pending rotor journal that equals and have less degree of eccentricity e1 (28) of degree of eccentricity e2 with quality with emery wheel (40) that the rotor journal of large eccentricity degree e2 (26) more matches with degree of eccentricity e1.
6. as one of above-mentioned claim described operated portable grinder, it is characterized by: the rotor journal (28) with less degree of eccentricity e1 is set on the outermost free end, and is adjacent with the rotor journal (26) that has than large eccentricity degree e2.
7. as one of above-mentioned claim described operated portable grinder, it is characterized by: emery wheel (40) is connected with a grinding wheel bearing (42) of especially constructing as rolling bearing especially non-disconnectablely, this grinding wheel bearing entangles rotor journal (26) with ring nothing in it with relatively rotating, particularly is supported on the fan (22).
8. as one of above-mentioned claim described operated portable grinder, it is characterized by: another emery wheel (34) particularly is connected as rolling bearing grinding wheel bearing (38) structure, centering with one particularly non-disconnectablely, ring can be connected with the rotor journal with small eccentricity degree (28) by an adapter ring (39) in it, wherein, the interior ring of rolling bearing (38) has radial spacing ground overlap joint rotor journal (26).
9. operated portable grinder as claimed in claim 7, it is characterized by: emery wheel (34) has fastener, elastic oscillation element (36) particularly, they can be placed in a side that deviates from emery wheel (34) on the casing (12) of operated portable grinder regularly, and their stop, especially limit the rotation of emery wheel (34).
10. as the described operated portable grinder of one of above-mentioned claim, it is characterized by: replace rotor journal (28), rotor journal (26) has one and has the eccentric orfice of the identical degree of eccentricity with it.
11. as one of above-mentioned claim described operated portable grinder, it is characterized by: rotor journal (26,28) has different diameters.
12. as the described operated portable grinder of one of above-mentioned claim, it is characterized by: grinding wheel bearing (38,42) in the rigging position upper support of emery wheel (34,40) on axial support surface identical on the rotor journal seat (53).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19852137.5 | 1998-11-12 | ||
| DE19852137A DE19852137A1 (en) | 1998-11-12 | 1998-11-12 | Motorized hand grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1288406A true CN1288406A (en) | 2001-03-21 |
| CN1131764C CN1131764C (en) | 2003-12-24 |
Family
ID=7887523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN998020974A Expired - Fee Related CN1131764C (en) | 1998-11-12 | 1999-06-02 | Power operated portable grinder |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1082194B1 (en) |
| JP (1) | JP2002529262A (en) |
| CN (1) | CN1131764C (en) |
| DE (2) | DE19852137A1 (en) |
| WO (1) | WO2000029170A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007000074A1 (en) * | 2005-06-27 | 2007-01-04 | Positec Power Tools (Suzhou) Co., Ltd. | Anti-vibration device for an abrasive machine, a machine having such device and a method for cleaning the surface of a work piece |
| CN100453271C (en) * | 2005-02-04 | 2009-01-21 | 苏州宝时得电动工具有限公司 | Eccentricity regulating mechanism |
| CN100553882C (en) * | 2003-12-10 | 2009-10-28 | 罗伯特·博施有限公司 | Electronic hand held machine tool, particularly eccentric grinder |
| CN102528609A (en) * | 2011-12-30 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Vibratory polishing grinding head |
| CN101633143B (en) * | 2008-07-25 | 2012-10-24 | 苏州宝时得电动工具有限公司 | Hand-held tool and application method thereof |
| CN103101039A (en) * | 2011-11-11 | 2013-05-15 | 苏州宝时得电动工具有限公司 | Clamp device and multifunctional machine capable of being used on clamp device |
| WO2022105833A1 (en) * | 2020-11-18 | 2022-05-27 | Milwaukee Electric Tool Corporation | Orbital sander |
| CN114871916A (en) * | 2022-04-22 | 2022-08-09 | 常州赛迪工具有限公司 | Sander with function of quickly replacing bottom plate |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10135251A1 (en) * | 2001-07-19 | 2003-02-06 | Bosch Gmbh Robert | Hand tool for sanding and abrading has a housing and motor with drive shaft and abrading plate with shaft housing and bearing housing |
| DE102005021153A1 (en) * | 2005-05-02 | 2006-11-09 | Flex-Elektrowerkzeuge Gmbh | Hand-held grinding machine and tool holding device |
| NL1030176C2 (en) * | 2005-10-12 | 2007-04-17 | Bosch Gmbh Robert | Hand tools with improved drive. |
| EP2006049B1 (en) * | 2007-06-22 | 2010-09-08 | Metabowerke GmbH | Motor-driven grinding tool |
| DE202016101430U1 (en) | 2016-03-15 | 2016-03-23 | Asis Gmbh | grinder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9415011D0 (en) * | 1994-07-26 | 1994-09-14 | Black & Decker Inc | Improved oscillating hand tool |
| DE19629989C2 (en) * | 1996-07-25 | 1999-01-28 | Metabowerke Kg | Grinder with a tool driven by a drive motor with an eccentric stroke |
-
1998
- 1998-11-12 DE DE19852137A patent/DE19852137A1/en not_active Withdrawn
-
1999
- 1999-06-02 CN CN998020974A patent/CN1131764C/en not_active Expired - Fee Related
- 1999-06-02 EP EP99936398A patent/EP1082194B1/en not_active Expired - Lifetime
- 1999-06-02 JP JP2000582194A patent/JP2002529262A/en active Pending
- 1999-06-02 DE DE59902129T patent/DE59902129D1/en not_active Expired - Lifetime
- 1999-06-02 WO PCT/DE1999/001630 patent/WO2000029170A1/en active IP Right Grant
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553882C (en) * | 2003-12-10 | 2009-10-28 | 罗伯特·博施有限公司 | Electronic hand held machine tool, particularly eccentric grinder |
| CN100453271C (en) * | 2005-02-04 | 2009-01-21 | 苏州宝时得电动工具有限公司 | Eccentricity regulating mechanism |
| WO2007000074A1 (en) * | 2005-06-27 | 2007-01-04 | Positec Power Tools (Suzhou) Co., Ltd. | Anti-vibration device for an abrasive machine, a machine having such device and a method for cleaning the surface of a work piece |
| CN101633143B (en) * | 2008-07-25 | 2012-10-24 | 苏州宝时得电动工具有限公司 | Hand-held tool and application method thereof |
| CN103101039A (en) * | 2011-11-11 | 2013-05-15 | 苏州宝时得电动工具有限公司 | Clamp device and multifunctional machine capable of being used on clamp device |
| CN103101039B (en) * | 2011-11-11 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Clamp device and multifunctional machine capable of being used on clamp device |
| CN102528609A (en) * | 2011-12-30 | 2012-07-04 | 中国科学院长春光学精密机械与物理研究所 | Vibratory polishing grinding head |
| WO2022105833A1 (en) * | 2020-11-18 | 2022-05-27 | Milwaukee Electric Tool Corporation | Orbital sander |
| CN114871916A (en) * | 2022-04-22 | 2022-08-09 | 常州赛迪工具有限公司 | Sander with function of quickly replacing bottom plate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19852137A1 (en) | 2000-05-18 |
| CN1131764C (en) | 2003-12-24 |
| EP1082194B1 (en) | 2002-07-24 |
| JP2002529262A (en) | 2002-09-10 |
| EP1082194A1 (en) | 2001-03-14 |
| DE59902129D1 (en) | 2002-08-29 |
| WO2000029170A1 (en) | 2000-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031224 Termination date: 20140602 |