EP1082194B1 - Power operated portable grinder - Google Patents
Power operated portable grinder Download PDFInfo
- Publication number
- EP1082194B1 EP1082194B1 EP99936398A EP99936398A EP1082194B1 EP 1082194 B1 EP1082194 B1 EP 1082194B1 EP 99936398 A EP99936398 A EP 99936398A EP 99936398 A EP99936398 A EP 99936398A EP 1082194 B1 EP1082194 B1 EP 1082194B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sanding
- hand
- eccentric
- plate
- held
- 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.)
- Expired - Lifetime
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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
Definitions
- the invention is based on a motor-driven hand grinder according to the preamble of claim 1.
- a hand grinder which by changing different sanding pads both usable as an orbital sander is.
- a first sanding plate is like this with the hand grinder can be coupled so that the sanding disc is not rotating Performs orbital motion in orbital sander mode.
- On second sanding plate is after disassembly of the first sanding plate can be coupled with the hand grinder so that it a rotating and at the same time an orbital movement in mode Eccentric grinder executes.
- the grinding stock removal rate in the orbital sander mode due to the rotary orbital movement higher than in orbital sander mode.
- the well-known hand grinder has both as an orbital sander and the same eccentric stroke as an orbital sander or resonant circuit diameter. This is opposite previous devices, which only served as orbital sander, were proportionate large and the achievable surface quality with Oscillating loops are relatively small or too coarse. on the other hand is the eccentric stroke or the resonant circuit diameter too small for eccentric grinders and leads to a relative low stock removal rate during eccentric grinding.
- the hand grinder according to the invention with the features of claim 1 has the advantage that both when Schwingals also with eccentric grinding due to several selectable different eccentric stroke sizes the performance optimum for the respective grinding task can be achieved by the hand grinder at least two eccentric pins with different ones Eccentricity, especially built-in together, has, each one of the two eccentric pins a grinding plate is assigned.
- the eccentric stroke can only be changed by changing the sanding plate, so that with the orbital sander a lower removal rate but high surface quality and with the eccentric sanding disc a higher stock removal rate without that with orbital grinding possible high surface quality is achievable.
- Eccentric pins are particularly easy to manufacture and it can be used in either orbital or random sander mode worked with different eccentric stroke be, so that compared to previous hand grinders results in a higher variety of services.
- the invention is associated with an exemplary embodiment Drawing explained.
- the hand grinder shown in detail in Figure 1 10 consists of a housing 12, which is not shown Handle with switch to operate the also electric motor, not shown, and an output shaft 18 carries, which is coupled to the motor and around a Shaft axis 19 is rotatably guided in a roller bearing 20.
- the lower end of the output shaft 18 sits in a rotationally fixed centric bore 21 of a fan 22.
- the fan 22 carries unspecified fan blades, both on its side facing the output shaft 18 as well its side facing away from the output shaft 18.
- the ventilator 22 is sealed radially from the housing 12, so that no air flow passes in the axial direction. Thereby acts as the output shaft 18 facing area Cooling fan for engine ventilation and that of the output shaft 18 area facing away as a suction fan for suction and Removal of the grinding dust through a blow-out nozzle 52 in a dust container (not shown) that can be attached to it.
- the fan 22 carries balancing masses 24, which are unbalanced the eccentrically driven one, axially below the fan Compensate 22 arranged grinding plates 34, 40.
- the fan 22 carries two on its lower axial end Eccentric pin 26, 28 each with different eccentricity and a 28 in the second eccentric pin, eccentric threaded bore 30 with respect to the shaft axis 19 for receiving a screw 32 with washer 44 for Attachment of the grinding plate 34, 40.
- the Fan 22 one for the eccentric pin 26, 28 common axial support surface 53 for abutting the back of the grinding plate 34, 40 or the unspecified end faces the bearing inner rings of the bearings 38, 42 (Fig. 2, 3).
- the grinding plate initially adjacent to the hand-held grinding machine 10 34 carries elastic oscillating elements 36 which are in receiving bores 37 of the housing 12 can be fixed and as known from orbital sanders, the sanding plate 34 am Prevent rotation without interfering with its circular motion.
- the grinding plate 34 carries in the center a roller bearing Plate bearing 38 and one with its no closer designated inner ring coupled, opposite the axis of rotation 35 of the grinding plate 34 central intermediate ring 39.
- the intermediate ring 39 is assigned to the second eccentric pin 28 and grips it in the mounting position of the grinding plate 34 with little play.
- the inner ring of the roller bearing 38 engages thereby also the first and the second eccentric pin 26, 28 with radial play and is supported axially on the lower End face 53 of the fan 22, so that the position of the Sanding discs 34, 40 for orbital or eccentric grinding safe and especially when eccentric grinding against tipping is stable, with the center of mass of the grinding plate 34, 40 each lie on the same axial plane.
- the grinding plate 34 carries on its lower, the vibrating elements 36 side facing away, a Velcro covering 46, with the one coated on the back with Velor 48 Sanding sheet 50 is connectable.
- the sanding plate 40 serves as an eccentric sanding plate, its plate bearing 42 assigned to the first eccentric pin 26 is, so it is in the mounting position with its not inner ring designated the eccentric pin 26 free of play and engages around the second eccentric pin 28 with radial play and at the end face on the axial support surface 53 of the fan 22, in particular supported securely against tilting.
- the grinding plate 40 By screwing the screw 32 with washer 44 in the threaded bore 30 is the grinding plate 40 compared to the Eccentric pin 26 can be fixed axially secured.
- the sanding plate 40 On its bottom the sanding plate 40 carries a Velcro covering 46 for Holding a sanding sheet 50 to it with velor 48 coated back.
- the sanding plate 40 and that Sanding sheet 50 are circular, while the (swinging) sanding pad 34 a e.g. round, triangular or otherwise can have a polygonal base. With these base areas the assigned sanding sheets 48 match.
- Figure 2 shows the hand grinder 10 in combination with the first grinding plate 34 for use as an orbital sander.
- the individual parts become according to the explanation FIG. 1 is not repeated, but only pointed out that the relatively low eccentricity e1 from the distance between the shaft axis 19 and the axis of rotation 35 of the grinding plate 34 or opposite the center of the eccentric 28 is clearly visible.
- the hand grinder 10 is shown in Figure 1 with mounted sanding disc 40 for use as an eccentric disc grinder shown. Also in here Figure 1 details not listed again , it should only be pointed out that the opposite the orbital sander of Figure 2 about twice large, but at least larger eccentricity e2 between the Shaft axis 19 and the axis of rotation 41 of the grinding plate 40 or clearly recognizable with respect to the center of the eccentric 26 is. It can also be seen that the screw 32 compared to the Sanding disc 40 is not arranged centrally, but only compared to the grinding plate 34 according to FIG. 2.
- Figures 2 and 3 show that the grinding plate 34 and 40 are of different sizes and weights. More specifically, is the mass of the oscillating grinding plate 34 opposite that of the eccentric grinding plate 40 twice as large, so that by the grinding plate 34 compared to the grinding plate 40 half eccentricity for both grinding plates 34, 40 equal balancing conditions result in one only balancing mass arrangement for both operating states the hand grinder 10, i.e. as eccentric and Orbital sander is sufficient.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Die Erfindung geht aus von einer motorgetriebenen Handschleifmaschine nach der Gattung des Anspruchs 1.The invention is based on a motor-driven hand grinder according to the preamble of claim 1.
Gemäß EP-Patent 0694 365 ist eine Handschleifmaschine bekannt, die durch Wechsel unterschiedlicher Schleifteller sowohl als Schwing- als auch als Exzenterschleifer verwendbar ist. Ein erster Schleifteller ist so mit der Handschleifmaschine kuppelbar, daß der Schleifteller eine nicht drehende Orbitalbewegung im Modus Schwingschleifer ausführt. Ein zweiter Schleifteller ist nach Demontage des ersten Schleiftellers so mit der Handschleifmaschine kupppelbar, daß er eine Dreh- und gleichzeitig eine Orbitalbewegung im Modus Exzenterschleifer ausführt. Dabei ist die Schleif-Abtragsleistung im Exzenterschleifermodus durch die Dreh-Orbitalbewegung höher als im Schwingschleifermodus.According to EP patent 0694 365 a hand grinder is known which by changing different sanding pads both usable as an orbital sander is. A first sanding plate is like this with the hand grinder can be coupled so that the sanding disc is not rotating Performs orbital motion in orbital sander mode. On second sanding plate is after disassembly of the first sanding plate can be coupled with the hand grinder so that it a rotating and at the same time an orbital movement in mode Eccentric grinder executes. Here is the grinding stock removal rate in the orbital sander mode due to the rotary orbital movement higher than in orbital sander mode.
Die bekannte Handschleifmaschine hat sowohl als Exzenterschleifer als auch als Schwingschleifer den gleichen Exzenterhub bzw. Schwingkreisdurchmesser. Dieser ist gegenüber bisherigen, nur als Schwingschleifer dienenden Geräten verhältnismäßig groß und die erreichbare Oberflächengüte beim Schwingschleifen verhältnismäßig gering bzw. zu grob. Andererseits ist der Exzenterhub bzw. der Schwingkreisdurchmesser für Exzenterschleifer zu klein und führt zu einer verhältnismäßig geringen Abtragsleistung beim Exzenterschleifen.The well-known hand grinder has both as an orbital sander and the same eccentric stroke as an orbital sander or resonant circuit diameter. This is opposite previous devices, which only served as orbital sander, were proportionate large and the achievable surface quality with Oscillating loops are relatively small or too coarse. on the other hand is the eccentric stroke or the resonant circuit diameter too small for eccentric grinders and leads to a relative low stock removal rate during eccentric grinding.
Die erfindungsgemäße Handschleifmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß sowohl beim Schwingals auch beim Exzenterschleifen infolge mehrerer wählbarer, unterschiedlicher Exzenterhubgrößen das Leistungsoptimum für die jeweilige Schleifaufgabe erreichbar ist, indem die Handschleifmaschine mindestens zwei Exzenterzapfen mit unterschiedlicher Exzentrizität, insbesondere gemeinsam fest eingebaut, aufweist, wobei jeweils einem der zwei Exzenterzapfen ein Schleifteller zugeordnet ist. Dabei ist der Exzenterhub nur durch Wechsel des Schleiftellers änderbar, so daß mit dem Schwingschleifteller eine geringere Abtragsleistung aber hohe Oberflächenqualität und mit dem Exzenterschleifteller eine höhere Abtragsleistung ohne die beim Schwingschleifen mögliche hohe Oberflächenqualität erreichbar ist.The hand grinder according to the invention with the features of claim 1 has the advantage that both when Schwingals also with eccentric grinding due to several selectable different eccentric stroke sizes the performance optimum for the respective grinding task can be achieved by the hand grinder at least two eccentric pins with different ones Eccentricity, especially built-in together, has, each one of the two eccentric pins a grinding plate is assigned. Here is the eccentric stroke can only be changed by changing the sanding plate, so that with the orbital sander a lower removal rate but high surface quality and with the eccentric sanding disc a higher stock removal rate without that with orbital grinding possible high surface quality is achievable.
Durch die Anordnung zweier axial benachbarter, unterschiedlicher Exzenterzapfen sind diese besonders einfach herstellbar und es kann sowohl im Schwing- als auch im Exzenterschleifermodus mit unterschiedlichem Exzenterhub gearbeitet werden, so daß sich gegenüber bisherigen Handschleifmaschinen eine höhere Leistungsvielfalt ergibt.By arranging two axially adjacent, different ones Eccentric pins are particularly easy to manufacture and it can be used in either orbital or random sander mode worked with different eccentric stroke be, so that compared to previous hand grinders results in a higher variety of services.
Dadurch, daß die Exzenterzapfen mit unterschiedlichen Schleiftellern, insbesondere unterschiedlich hinsichtlich Masse und Grundfläche, koppelbar sind, ist die Handschleifmaschine den Bedingungen für groß- und kleinflächige Schleifarbeiten besser anpaßbar. The fact that the eccentric pin with different Sanding discs, especially different in terms of The hand grinder is mass and footprint that can be coupled the conditions for large and small-area grinding work more adaptable.
Dadurch, daß die Exzenterzapfen unterschiedliche Durchmesser haben und die unterschiedlichen Schleifteller nicht an andere als die zugeordneten Exzenterzapfen passen, ist deren versehentliche Koppelung mit einem dafür nicht vorgesehenen Schleifteller nicht möglich. Dadurch ist eine Kodierung geschaffen, durch die eine Verwechslung der Schleifteller ausgeschlossen ist. Dies ist vorteilhaft, weil dadurch ungünstige Betriebsbereiche bzw. Einsätze außerhalb des Leistungsoptimums sicher vermeidbar sind.The fact that the eccentric pin different diameters and the different grinding discs are not passed on to others than the assigned eccentric pins fit is their accidental coupling with a not intended Sanding pad not possible. This creates a coding through which a mix-up of the grinding plates is excluded is. This is advantageous because it is unfavorable Operating areas or missions outside the optimum performance are safely avoidable.
Dadurch, daß die Exzenterzapfen gemeinsam am freien Ende eines Ventilators der Handschleifmaschine sitzen, ist dieser einfach herstellbar, wobei auch die Schleifteller einfach aufbaubar und leicht montierbar sind.The fact that the eccentric pin together at the free end of a Fan of the hand grinder is this easy to manufacture, and the sanding pads are also simple are buildable and easy to assemble.
Dadurch, daß die Tellerlager sich in der Montagelage der Schleifteller an einer gleichen axialen Stützfläche des Exzenterträgers abstützen, ist die Biegesteifigkeit bzw. die Kippsicherheit der Schleifteller beim Schleifen deutlich verbessert, wobei die als Lagersitze der Tellerlager dienenden Exzenterzapfen gegen Biegen entlastet werden.The fact that the plate bearing in the mounting position of Sanding disc on the same axial support surface of the eccentric carrier support, is the bending stiffness or Tilting safety of the sanding plates clearly when sanding improved, the serving as the bearing seats of the plate bearings Eccentric pin against bending are relieved.
Dadurch, daß die unterschiedlichen Schleifteller, d.h. der für Schwingschleifen und der für Exzenterschleifen so dimensioniert sind, daß jeweils das Produkt der Schleiftellermasse und des vorgesehenen Exzenterhubs gleich ist, ist eine optimale Auswuchtung und Vibrationsfreiheit der Handschleifmaschine sowohl beim Schwingschleifen als auch beim Exzenterschleifen gesichert.The fact that the different grinding discs, i.e. the for orbital loops and dimensioned for eccentric loops are that the product of the grinding plate mass and the intended eccentric stroke is the same optimal balancing and vibration-free hand grinder both for orbital grinding and eccentric grinding secured.
Die Erfindung ist anhand eines Ausführungsbeispiels mit zugehöriger Zeichnung erläutert. The invention is associated with an exemplary embodiment Drawing explained.
Es zeigen:
Die in Figur 1 ausschnittsweise dargestellte Handschleifmaschine
10 besteht aus einem Gehäuse 12, das einen nichtdargestellten
Handgriff mit Schalter zur Betätigung des ebenfalls
nicht dargestellten Elektromotors sowie eine Abtriebswelle
18 trägt, die mit dem Motor gekoppelt ist und um eine
Wellenachse 19 drehbar in einem Wälzlager 20 geführt ist.The hand grinder shown in detail in Figure 1
10 consists of a
Das untere Ende der Abtriebswelle 18 sitzt drehfest in einer
zentrischen Bohrung 21 eines Ventilators 22. Der Ventilator
22 trägt nicht näher bezeichnete Lüfterflügel, sowohl auf
seiner der Abtriebswelle 18 zugewandten Seite als auch auf
seiner der Abtriebswelle 18 abgewandten Seite. Der Ventilator
22 ist radial gegenüber dem Gehäuse 12 abgedichtet, so
daß ihn in axialer Richtung kein Luftstrom passiert. Dadurch
wirkt sein der Abtriebswelle 18 zugewandter Bereich als
Kühlventilator zur Motorlüftung und der der Abtriebswelle 18
abgewandte Bereich als Saugventilator zum Absaugen und zum
Abtransport des Schleifstaubs durch einen Ausblasstutzen 52
in einen daran befestigbaren, nichtdargestellten Staubbehälter. The lower end of the
Der Ventilator 22 trägt Ausgleichsmassen 24, die die Unwucht
der exzentrisch angetriebenen, axial unterhalb des Ventilators
22 angeordneten Schleifteller 34, 40 ausgleichen.The
Der Ventilator 22 trägt auf seinem unteren axialen Ende zwei
Exzenterzapfen 26, 28 mit jeweils unterschiedlicher Exzentrizität
und eine im zweiten Exzenterzapfen 28 zentrische,
gegenüber der Wellenachse 19 exzentrische Gewindebohrung 30
zur Aufnahme einer Schraube 32 mit Unterlegscheibe 44 zur
Befestigung der Schleifteller 34, 40. Außerdem weist der
Ventilator 22 eine für die Exzenterzapfen 26, 28 gemeinsame
axiale Stützfläche 53 zur Anlage der Rückseite der Schleifteller
34, 40 bzw. der nicht näher bezeichneten Stirnseiten
der Lager-Innenringe der Lager 38, 42 (Fig. 2, 3) auf.The
Der der Handschleifmaschine 10 zunächst benachbarte Schleifteller
34 trägt elastische Schwingelemente 36, die in Aufnahmebohrungen
37 des Gehäuses 12 festlegbar sind und die,
wie bei Schwingschleifern bekannt, den Schleifteller 34 am
Rotieren hindern, ohne dessen kreisende Bewegung zu beeinträchtigen.The grinding plate initially adjacent to the hand-held
Der Schleifteller 34 trägt mittig ein als Wälzlager ausgestaltetes
Tellerlager 38 und einen mit dessen nicht näher
bezeichneten Innenring gekoppelten, gegenüber der Drehachse
35 des Schleiftellers 34 zentralen Zwischenring 39. Der Zwischenring
39 ist dem zweiten Exzenterzapfen 28 zugeordnet
und umgreift diesen in der Montagelage des Schleiftellers 34
mit geringem Spiel. Der Innenring des Wälzlagers 38 übergreift
dabei auch den ersten und den zweiten Exzenterzapfen
26, 28 mit radialem Spiel und stützt sich axial an der unteren
Stirnseite 53 des Ventilators 22 ab, so daß die Lage des
Schleiftellers 34, 40 beim Schwing- bzw. Exzenterschleifen
sicher und insbesondere beim Exzenterschleifen gegen Kippen
stabil ist, wobei die Massenschwerpunkte der Schleifteller
34, 40 je auf gleicher axialer Ebene liegen.The
Der Schleifteller 34 trägt auf seiner unteren, den Schwingelementen
36 abgewandten Seite, einen Klettbelag 46, mit dem
ein auf seiner Rückseite mit Velour 48 beschichtetes
Schleifblatt 50 verbindbar ist.The
In Betrachtungsrichtung nach unten folgt auf den Schleifteller
34 ein gegen diesen austauschbarer zweiter Schleifteller
40. Der Schleifteller 40 dient als Exzenterschleifteller,
wobei dessen Tellerlager 42 dem ersten Exzenterzapfen 26 zugeordnet
ist, so daß es in der Montagelage mit seinem nicht
näher bezeichneten Innenring den Exzenterzapfen 26 spielfrei
und den zweiten Exzenterzapfen 28 mit radialem Spiel umgreift
und sich dabei stirnseitig an der axialen Stützfläche
53 des Ventilators 22, insbesondere gegen Kippen sicher abstützt.Looking downwards follows the sanding disc
34 a second grinding disc that can be exchanged for this
40. The
Durch Einschrauben der Schraube 32 mit Unterlegscheibe 44 in
die Gewindebohrung 30 ist der Schleifteller 40 gegenüber dem
Exzenterzapfen 26 axial gesichert festlegbar. Auf seiner Unterseite
trägt der Schleifteller 40 einen Klettbelag 46 zum
Festhalten eines Schleifblatts 50 an dessen mit Velour 48
beschichteten Rückseite. Der Schleifteller 40 und das
Schleifblatt 50 sind kreisrund, während der (Schwing)-Schleifteller
34 eine z.B. runde, dreieckige oder anderweitig
vieleckige Grundfläche haben kann. Mit diesen Grundflächen
stimmen die zugeordneten Schleifblätter 48 überein.By screwing the
Figur 2 zeigt die Handschleifmaschine 10 in Kombination mit
dem ersten Schleifteller 34 zur Verwendung als Schwingschleifer.
Dabei werden die Einzelteile gemäß Erläuterung zu
Figur 1 nicht wiederholt aufgeführt, sondern nur darauf hingewiesen,
daß die verhältnismäßig geringe Exzentrizität e1
aus dem Abstand der Wellenachse 19 gegenüber der Drehachse
35 des Schleiftellers 34 bzw. gegenüber der Mitte des Exzenters
28 gut erkennbar ist.Figure 2 shows the
In Figur 3 ist die Handschleifmaschine 10 gemäß Figur 1 mit
montiertem Schleifteller 40 zur Verwendung als Exzentertellerschleifer
dargestellt. Ebenfalls sollen hier die in
Figur 1 angeführten Einzelheiten nicht nochmals aufgeführt
werden, es soll nur darauf hingewiesen werden, daß die gegenüber
dem Schwingschleifer nach Figur 2 etwa doppelt so
große, aber zumindest größere Exzentrizität e2 zwischen der
Wellenachse 19 und der Drehachse 41 des Schleiftellers 40
bzw. gegenüber der Mitte des Exzenters 26 deutlich erkennbar
ist. Erkennbar ist auch, daß die Schraube 32 gegenüber dem
Schleifteller 40 nicht zentrisch angeordnet ist, sondern nur
gegenüber dem Schleifteller 34 gemäß Figur 2.In Figure 3, the
Die Figuren 2 und 3 lassen erkennen, daß die Schleifteller
34 und 40 unterschiedlich groß und schwer sind. Genauer gesagt,
ist die Masse des Schwing-Schleiftellers 34 gegenüber
der des Exzenter-Schleiftellers 40 doppelt so groß, so daß
sich durch die beim Schleifteller 34 gegenüber dem Schleifteller
40 halbe Exzentrizität bei beiden Schleiftellern 34,
40 gleiche Auswuchtungsbedingungen ergeben und somit eine
einzige Auswuchtmassen-Anordnung für beide Betriebszustände
der Handschleifmaschine 10, d.h. als Exzenter- und.als
Schwingschleifer ausreicht.Figures 2 and 3 show that the
Claims (12)
- Motor-operated hand-held sanding machine (10) having an eccentrically driven sanding plate (34, 40) which can be coupled to eccentric pins (26, 28) on the machine side, such as, for example, a random-orbit sander or hand-held orbital sander, characterized in that the hand-held sanding machine (10) has several, in particular two, eccentric pins (26, 28) arranged together and having different eccentricity.
- Hand-held sanding machine according to Claim 1, characterized in that the two eccentric pins (26, 28) are arranged so as to axially follow one another, in particular as part of a fan (22).
- Hand-held sanding machine according to Claim 1 or 2, characterized in that the eccentric pins (26, 28) can be coupled to different sanding plates (34, 40), in particular different with regard to mass and base area.
- Hand-held sanding machine according to Claim 3, characterized in that each of the different sanding plates (34, 40) fits only into one of the eccentric pins (26, 28).
- Hand-held sanding machine according to either of Claims 3 and 4, characterized in that the sanding plate (40) which is assigned to the eccentric pin (26) having larger eccentricity e2, relative to the sanding plate (34) which is assigned to the eccentric pin (28) having smaller eccentricity e1, has a different mass in relation to the difference in eccentricity of e2 to e1.
- Hand-held sanding machine according to one of the preceding claims, characterized in that the eccentric pin (28) having the smaller eccentricity e1 is arranged at the outermost free end adjacent to the eccentric pin (26) having the larger eccentricity e2.
- Hand-held sanding machine according to one of the preceding claims, characterized in that the sanding plate (40) is connected, in particular in a non-detachable manner, to a plate bearing (42) which is designed in particular as a rolling-contact bearing and with whose inner ring said sanding plate (40) encloses the eccentric pin (26) in a rotationally fixed manner, and in particular is supported on the fan (22).
- Hand-held sanding machine according to one of the preceding claims, characterized in that another sanding plate (34) is connected, in particular in a non-detachable manner, to a central plate bearing (38) which is designed in particular as a rolling-contact bearing and whose inner ring can be coupled via an intermediate ring (39) to the eccentric pin (28) having the smaller eccentricity, the inner ring of the rolling-contact bearing (38) enclosing the eccentric pin (26) with radial clearance.
- Hand-held sanding machine according to Claim 7, characterized in that the sanding plate (34) carries coupling parts, in particular elastic oscillation elements (36), which can be secured to the housing (12) of the hand-held sanding machine on the side remote from the sanding plate (34) and which prevent, in particular restrict, the rotation of the sanding plate (34).
- Hand-held sanding machine according to one of the preceding claims, characterized in that an eccentric pin (26), instead of a further eccentric pin (28), has an eccentric bore having the eccentricity of the latter.
- Hand-held sanding machine according to one of the preceding claims, characterized in that the eccentric pins (26, 28) have different diameters.
- Hand-held sanding machine according to one of the preceding claims, characterized in that the plate bearings (38, 42), in the fitted position of the sanding plates (34, 40), are supported on an identical axial supporting surface (53) of the eccentric support.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19852137 | 1998-11-12 | ||
| DE19852137A DE19852137A1 (en) | 1998-11-12 | 1998-11-12 | Motorized hand grinder |
| PCT/DE1999/001630 WO2000029170A1 (en) | 1998-11-12 | 1999-06-02 | Power operated portable grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1082194A1 EP1082194A1 (en) | 2001-03-14 |
| EP1082194B1 true EP1082194B1 (en) | 2002-07-24 |
Family
ID=7887523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99936398A Expired - Lifetime EP1082194B1 (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) |
Families Citing this family (13)
| 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 |
| DE10357652A1 (en) * | 2003-12-10 | 2005-07-07 | Robert Bosch Gmbh | Electric hand tool, in particular 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 |
| DE102005021153A1 (en) * | 2005-05-02 | 2006-11-09 | Flex-Elektrowerkzeuge Gmbh | Hand-held grinding machine and tool holding device |
| 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 |
| NL1030176C2 (en) * | 2005-10-12 | 2007-04-17 | Bosch Gmbh Robert | Hand tools with improved drive. |
| DE502007005000D1 (en) * | 2007-06-22 | 2010-10-21 | Metabowerke Gmbh | Motor-driven grinding tool device |
| 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 |
| 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 |
| CN102528609B (en) * | 2011-12-30 | 2014-06-18 | 中国科学院长春光学精密机械与物理研究所 | Vibratory polishing grinding head |
| DE202016101430U1 (en) | 2016-03-15 | 2016-03-23 | Asis Gmbh | grinder |
| US20240009795A1 (en) * | 2020-11-18 | 2024-01-11 | Milwaukee Electric Tool Corporation | Orbital sander |
| CN114871916B (en) * | 2022-04-22 | 2023-06-06 | 常州赛迪工具有限公司 | Grinder with quick change bottom plate function |
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 DE DE59902129T patent/DE59902129D1/en not_active Expired - Lifetime
- 1999-06-02 EP EP99936398A patent/EP1082194B1/en not_active Expired - Lifetime
- 1999-06-02 CN CN998020974A patent/CN1131764C/en not_active Expired - Fee Related
- 1999-06-02 WO PCT/DE1999/001630 patent/WO2000029170A1/en active IP Right Grant
- 1999-06-02 JP JP2000582194A patent/JP2002529262A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002529262A (en) | 2002-09-10 |
| EP1082194A1 (en) | 2001-03-14 |
| DE59902129D1 (en) | 2002-08-29 |
| CN1131764C (en) | 2003-12-24 |
| CN1288406A (en) | 2001-03-21 |
| DE19852137A1 (en) | 2000-05-18 |
| WO2000029170A1 (en) | 2000-05-25 |
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