CN1608799A - Portable grinding machine - Google Patents
Portable grinding machine Download PDFInfo
- Publication number
- CN1608799A CN1608799A CN 200410086096 CN200410086096A CN1608799A CN 1608799 A CN1608799 A CN 1608799A CN 200410086096 CN200410086096 CN 200410086096 CN 200410086096 A CN200410086096 A CN 200410086096A CN 1608799 A CN1608799 A CN 1608799A
- Authority
- CN
- China
- Prior art keywords
- abrasive sheet
- edge
- grinding
- lever arm
- swing span
- 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 title claims abstract description 98
- 230000033001 locomotion Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
A portable grinding tool (10) which has a grinding plate (22), a grinding sheet (24) is fixed on the lower side surface of the grinding plate and encloses grinding plate edges (28, 30) contrapositing with each other using its end (25), and two ends of the upper side surface of the grinding plate (22) are fixed by a clamping device which is close to edge and composes a swinging rack (34), it is possible to simplify as follows: the grinding sheet (24) is fixed by holding devices (38, 48, 49, 58) on region apart from edge by means of each grinding piece end (25), and can move upwards on region nearby the edge, thus to be tensioned.
Description
Technical field
The present invention relates to portable grinding machine, has a grinding dish, can fix an abrasive sheet on the downside of this grinding dish, this abrasive sheet can be fixed near the clamping device edge, that be made of swing span on two grinding plate edges opposite each other and thereon or on the both ends of the upper side of described grinding dish with its end.
Background technology
According to DE 101 39 548 A1 known a kind of portable grinding machine, it is provided with one and is used for the system that clamping and one of tensioning are maintained at the abrasive sheet on its grinding dish downside.This system works very reliably and can be operated well.It stretches out with surpassing grinding dish back edge and uses the back edge of abrasive sheet to carry out grinding and the similar grinding change difficulty that the stage upper edge flushes thus.
The grinding of using the edge of this system to flush only may be used the leading edge of abrasive sheet.
According to US6,648, the grinding plate edge place that 08 portable grinding machine known, that become by superfine grinding mechanism opposes on grinding dish upper side is provided with the clamping bar of swing form, in the outside, edge these abrasive sheet ends is fixed between the lever arm and grinding dish upper side in the outside, edge by it.This corresponding clamping bar on away from the side at edge by hand.
In the case in order to take out or insert the abrasive sheet end, one be arranged in the grinding disk cover, be easy to the clamping bar that approaching clamping limb is used to open the swing form, wherein only available known clamping bar clamping abrasive sheet, and can not be side by side with its tensioning rest on the downside of grinding dish.
Exist little slip between abrasive sheet and grinding dish thus when cutting with reciprocating grinding mill, this slip brings adverse effect and by the coming off of abrasive material that constitutes bending and be correlated with therewith abrasive sheet is worn and torn in advance grinding function.
Summary of the invention
According to the present invention, portable grinding machine has been proposed, has a grinding dish, on the downside of this grinding dish, can fix an abrasive sheet, this abrasive sheet can be fixed near the clamping device edge, that be made of swing span on two grinding plate edges opposite each other and thereon or on the both ends of the upper side of described grinding dish with its end, and wherein: each can be held that device is fixed on away from the zone at edge and can move upward and can be tensioned thus on described zone near the edge described abrasive sheet by its abrasive sheet end.
The present invention has its advantage, and a kind of economy, light portable grinding machine promptly are provided, it no matter leading edge grinding and abrasive sheet thereof that still to be back edge all can be used for flushing on the edge can clamp reliably and be stretched on the grinding dish with simple especially device.
Advantageously, this abrasive sheet can be fixed on the described swing span on the upper side of described grinding dish, and can be by the swing jointly regularly thereon of this swing span tensioning ground.
Advantageously, described swing span is set in the profile of these grinding plate edges and operates described abrasive sheet securablely in this profile.
Advantageously, described swing span is rested on the upper side of described grinding dish with its lever arm near the edge by spring precompressed ground, and use lever arm to extend upwardly away from the edge at this, and wherein the abrasive sheet end on the described swing span upper side can be fixed on its away from the lever arm at edge on and with it jointly-be fixed thereon ground-can be to lower swing, so that the upper side that described grinding dish can be left in the described zone near the edge of described abrasive sheet up moves and can be changeably by stop at this.
Rested on the upper side of grinding dish with its lever arm by spring precompressed ground by the clamping device that constitutes by swing span near the edge, and extend upwardly obliquely with its lever arm in the case away from the edge, and wherein on the abrasive sheet end on the swing span upper side can be fixed on away from the lever arm at edge and then can with it jointly to lower swing, so that the zone near the edge of abrasive sheet pulls to the top, wherein swing span uses the lever arm away from the edge swingingly can be made the known so far abrasive sheet clamping system of tong-like ground clamping that only is used for by little change but in the clamping that fundamentally the new configuration of abrasive sheet be can be used for tensioning by stop downwards.
By stop device is set, it is fixed thereon that it is pressed in away from reaching on the lever arm at edge the abrasive sheet end, be that the abrasive sheet end can be fixed on away from the lever arm at edge and adjustable ground and is bearing between the clamping limb on this lever arm, used known so far kinematic principle-change a little ground-can realize the clamping and the better tensioning of more reliable abrasive sheet.
Stretch out by clamping device in the case and to be no more than the abrasive sheet end but the portion that sets within it, can realize carrying out the grinding that well to control, the edge flushes with two ends of the grinding dish of portable grinding machine.
Towards away from the oscillating stroke of lever arm transmission at edge and make the abrasive sheet tensioning thus, the clamping of abrasive sheet and tensioning can realize by the functional unit of operating an independent mobile clamping limb by clamping limb.
Substantially symmetrically be arranged on by clamping device and clamping limb on the grinding plate edge of two opposition, can make that two abrasive sheets are distolateral to be held and tensioning in the same manner special reliable operation.
Basically have the width of abrasive sheet by swing span and clamping limb, can prevent from especially reliably undesirablely to clamp with getting loose.
By on it fixedly the lever arm away from the edge of abrasive sheet have a transverse groove, be used to compress abrasive sheet and shape and insert clamping limb sealedly, will guarantee with high thrust clamping abrasive sheet end.
By clamping limb and away from the lever arm at edge with zone that abrasive sheet contact in have and strengthen the lining that rubs, can further improve the clamping reliability of abrasive sheet.
Description of drawings
Below describe the present invention in detail by embodiment and with reference to accompanying drawing.
Accompanying drawing is:
Fig. 1: the summary side view in the abrasive sheet clamping device zone of portable milling drum,
Fig. 2: have the portable superfine grinding machine of another modification of abrasive sheet clamping,
Fig. 3: have the portable superfine grinding machine of another modification of abrasive sheet clamping,
Fig. 4: the vertical view of the details of a swing span, and
Fig. 5: the vertical view of the details of a clamping limb.
The specific embodiment
Fig. 1 represents the side view of a part of a portable grinding machine 10.Its grinding dish 22 can be seen maintenance abrasive sheet 24 thereon in the zone of its leading edge 28.Abrasive sheet 24 along the downside of grinding dish 22 and leading edge 28 thereof twine come and be directed to its upper side 26 above.Abrasive sheet end 25 is placed on the swing span 34 in the case, wherein this end at first is directed on its lever arm 38 away from the edge by the lever arm 36 near the edge always, and can be pressed in this transverse groove 39 that has unshowned friction enhancing lining by the adaptive sealedly clamping limb 49 of shape in a transverse groove 39 there.Rotation by knob 43 and rotation clamping bar 42 thereof be around the axial downward movement of its rotating shaft 44, and abrasive sheet end 25 can resist and undesirablely is fixed between clamping limb 49 and the transverse groove 39 with getting loose and continues to move downward swing span 34 is swung to clockwise direction by rotating clamping bar 42.In the case, leave upwards swing of upper side 26 towards upper sides 26 motions of grinding dish 22 and near the lever arm 36 at edge downwards away from the lever arm 38 at edge, at this moment its abrasive sheet 24 that will be directed thereon moves up and tensioning.Wherein swing span 34 is around swinging axle 40 motions.Knob 43 with rotating shaft 44 and clamping limb 49 is supported in the scope of a tabular grinding disk cover 32 in the housing 12.This grinding disk cover 32 and grinding dish 22 flexibly connect each other by unshowned jockey.
In order to unload abrasive sheet 24, rotation knob 43 is so that the rotation clamping bar 42 that is made of bolt axially moves upward.Swing span 34 will with its away from the edge-by stage clip 35 precompressed-lever arm 38 follows its motion and gets back to it and more be inclined upwardly and leave in the home position of upper side.
If clamping limb 49 continues upwards to deviate from from transverse groove 39 when the abrasive sheet clamping is unclamped, then then abrasive sheet end 25 or whole abrasive sheet 24 can be at an easy rate from wherein taking out.
Fig. 2 represents the side view of a portable grinding machine 10 that is become by portable superfine grinding mechanism, it has a housing 12, it is receiving a unshowned motor and is carrying out the transition to handgrip 14 backward, can support one in handgrip can manual on ﹠ off switch 16 with being pressed into, and carries out the transition to a stube cable in its back-end.
Below direction of observation, on housing 12, keeping a grinding dish 22, but at abrasive sheet 24 of downside clamping of this grinding dish.Its abrasive sheet end 25 of abrasive sheet 24 usefulness is wrapped on the before and after edge 28,30 of grinding dish 22, and on grinding dish upper side 26, link to each other with a pad 48 by swing span 34 that ground connection is fixed and the while clamped.Swing span 34 constitutes on principle as according to Fig. 1 ground, but some simplification is wherein represented its disengaged position and dotted its clamped position with solid line.At disengaged position or on the importing position of an abrasive sheet 24 of installation, being bearing in downwards on the upper side 26 of grinding dish 22 by spring precompressed ground near the lever arm 36 at edge of swing span 34 wherein roughly extended with the upper side 26 of grinding dish 22 to the right abreast away from the lever arm 38 at edge.After pushing abrasive sheet end 25 on the swing span 34, make pad 48 axial downward movement that abrasive sheet end 25 is fixed on away from continuing to operate swing span 34 to decline on the upper side of the lever arm 38 at edge and by pad 48 by operating a rotation clamping bar 42.Its lever arm 38 away from the edge is fallen towards the upper side 26 of grinding dish 22 downwards in the case.At this moment it upwards swingingly leave the upper side 26 of grinding dish 22 near the lever arm 36 at edge, and abrasive sheet 24 moves up and is tensioned.This identical process is repeated in another abrasive sheet end 25 of back edge 30 usefulness at grinding dish 22 so that then abrasive sheet 24 on the two ends until less than the compressive yield strength tensioning rest on the downside of grinding dish 22.Minimum slip is only arranged when superfine grinding machine 10 is operated thus and can realize maximum efficient.Bearing plate 41 of swing span 34 usefulness is rotatably supported in the device of pedestal form on the swinging axle 40 above the upper side 26 of grinding dish, and one of them unshowned torsionspring makes swing span 34 attempt swing left on the direction of observation.In the grinding disk cover 32 as housing 12 parts that extends abreast with grinding dish 22, rotation clamping bar 42 can rotate in a screw thread and axial adjustable ground setting reaches and can easily rotate back into its home position by a pressure-torsionspring 46.
Fig. 3 and Fig. 2 represent an embodiment of portable grinding machine 10 similarly, wherein used a clamping limb 49 that is bearing on the grinding disk cover 32 to replace the combination of knob 43 and pad 48, and this clamping limb is pressed in abrasive sheet end 25 as eccentric clamping bar on the lever arm 38 away from the edge of swing span 34 when clamping, and on direction of observation, continue to drive when swinging this lever arm to the right away from the edge.Make abrasive sheet 24 be moved upwards up in the land near the lever arm 36 at edge in the case and make simultaneously on its downside that is stretched in grinding dish 22.
Rocking lever 52 can support by a swinging axle 54 in grinding disk cover 32 rotationally, and in clip position, be bearing on the abrasive sheet end 25 and reach on the lever arm 38 that is bearing in simultaneously away from the edge with its cam bit 58, and downwards straightening to this lever arm backstop on the upper side 26 of grinding dish 22.
Tensioning abrasive sheet 24 in this way in the case.
Though on back edge 30, only summarily express abrasive sheet end 25, are symmetry and that structure is identical and available same way as operations with the device of leading edge 28.
Fig. 4 represents the vertical view of the swing span 34 that is made of single wire rod parts, especially circular wire rod parts.Anterior lever arm 36 near the edge is made into pressed part than lever arm 38 weak points and bearing plate 41 away from the edge.
Fig. 5 represents to rotate the details of clamping bar 42, wherein clamping limb 49 extend on the whole width of abrasive sheet and be used for shape and be presented to sealedly-preferably by circular wire rod parts make-transverse groove 39 of swing span 34.The pad 48 of this rotation clamping bar 42 constitute by bolt with steep screw thread and in the corresponding guide hole of housing 12 or grinding disk cover 32 according to the rules the earth's axis to regulating and can being locked on the final position of its rotation.Can carry out axial adjusting and clamping or the disengagement on the opposite direction of abrasive sheet 24 by rotating.
Configuration by a swing span 34 of making by flexible spring material can preselected in this wise abrasive sheet 24 tensioning and the sand paper stress that is produced in the case, can get rid of because strong excessively tensioning causes breaking of abrasive sheet 24.
Claims (10)
1. portable grinding machine (10), has a grinding dish (22), on the downside of this grinding dish, can fix an abrasive sheet (24), this abrasive sheet with its end (25) round two grinding plate edges (28 opposite each other, 30) go up and can be by near the edge thereon or on the both ends of the upper side of described grinding dish (22), fix by the clamping device that swing span (34) constitutes, it is characterized in that: each can be held device (38 to described abrasive sheet (24) on away from the zone at edge by its abrasive sheet end (25), 48,49,58) fixing and can on described zone, move upward and can be tensioned thus near the edge.
2. according to the portable grinding machine of claim 1, it is characterized in that: this abrasive sheet (24) can be fixed on the described swing span (34) on the upper side (26) of described grinding dish (22), and can be by the swing jointly regularly thereon of this swing span tensioning ground.
3. according to the portable grinding machine of claim 1 or 2, it is characterized in that: described swing span (34) is set at interior the reaching of profile of these grinding plate edges (28,30) and operates described abrasive sheet (24) securablely in this profile.
4. according to one portable grinding machine in the above claim, it is characterized in that: described swing span (34) is rested on the upper side (26) of described grinding dish (22) with its lever arm near the edge (36) by spring precompressed ground, and use lever arm (38) to extend upwardly away from the edge at this, and wherein the abrasive sheet end (25) on the described swing span upper side can be fixed on its away from the lever arm at edge on and with it jointly-be fixed thereon ground-can be to lower swing move up that reach can be changeably by stop at this so that the upper side (26) of described grinding dish (22) can be left in the described zone near the edge of described abrasive sheet (24).
5. according to one portable grinding machine in the above claim, it is characterized in that: described abrasive sheet end (25) can be fixed on described lever arm away from the edge (38) and adjustable ground and be bearing in clamping limb (48 on this lever arm, 49,58) between, in one first clamping step, prevent losing of described abrasive sheet (24).
6. according to one portable grinding machine in the above claim, it is characterized in that: the described clamping limb (48 in clamped back in described abrasive sheet end (25), 49,58) the described lever arm away from the edge (38) towards described swing span (34) transmits an oscillating stroke and makes described swing span (34) swing at this.
7. according to one portable grinding machine in the above claim, it is characterized in that: described clamping device (38,39,48) and described clamping limb (49,58) are arranged on the grinding plate edge (28,30) of two opposition doubly, substantially symmetrically.
8. according to one portable grinding machine in the above claim, it is characterized in that: described swing span (34) is wide the samely with described abrasive sheet (24) basically.
9. according to one portable grinding machine in the above claim, it is characterized in that: lever arm away from the edge of described swing span (34) (38) and described clamping limb (49) with zone that described abrasive sheet end (25) contacts in have the lining that some strengthen friction.
10. according to one portable grinding machine in the above claim, it is characterized in that: described lever arm away from the edge (38) has a transverse groove (39), is used for shape and inserts described clamping limb (49) and described abrasive sheet (24) sealedly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10349275.5 | 2003-10-20 | ||
| DE2003149275 DE10349275A1 (en) | 2003-10-20 | 2003-10-20 | Hand sanding tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1608799A true CN1608799A (en) | 2005-04-27 |
| CN1608799B CN1608799B (en) | 2010-09-01 |
Family
ID=33462025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410086096 Expired - Fee Related CN1608799B (en) | 2003-10-20 | 2004-10-20 | Portable grinding machine |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1608799B (en) |
| DE (1) | DE10349275A1 (en) |
| GB (1) | GB2407286B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286328A (en) * | 2018-03-03 | 2018-07-17 | 河北建设集团股份有限公司 | A kind of elevator hoistway construction platform |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2511392C2 (en) * | 1975-03-15 | 1982-09-23 | Robert Bosch Gmbh, 7000 Stuttgart | Orbital sander with dust extraction |
| US4216631A (en) * | 1979-01-25 | 1980-08-12 | The Singer Company | Paper clamping device for sanding machine |
| JPH0215256U (en) * | 1988-07-01 | 1990-01-30 | ||
| DE19608969A1 (en) * | 1996-03-08 | 1997-09-11 | Bosch Gmbh Robert | Electric hand grinder |
| IT1298433B1 (en) * | 1997-02-27 | 2000-01-10 | Bosch Gmbh Robert | PORTABLE ELECTRIC TOOL IN PARTICULAR GRINDER |
-
2003
- 2003-10-20 DE DE2003149275 patent/DE10349275A1/en not_active Ceased
-
2004
- 2004-10-15 GB GB0422970A patent/GB2407286B/en not_active Expired - Fee Related
- 2004-10-20 CN CN 200410086096 patent/CN1608799B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286328A (en) * | 2018-03-03 | 2018-07-17 | 河北建设集团股份有限公司 | A kind of elevator hoistway construction platform |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2407286A (en) | 2005-04-27 |
| GB0422970D0 (en) | 2004-11-17 |
| GB2407286B (en) | 2006-04-19 |
| DE10349275A1 (en) | 2005-05-19 |
| CN1608799B (en) | 2010-09-01 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20161020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |