EP1027958B1 - Exzenterteller-Schleifmaschine - Google Patents
Exzenterteller-Schleifmaschine Download PDFInfo
- Publication number
- EP1027958B1 EP1027958B1 EP00101027A EP00101027A EP1027958B1 EP 1027958 B1 EP1027958 B1 EP 1027958B1 EP 00101027 A EP00101027 A EP 00101027A EP 00101027 A EP00101027 A EP 00101027A EP 1027958 B1 EP1027958 B1 EP 1027958B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- ring gear
- annular body
- disk
- drive shaft
- 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
- B24B23/02—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 relates to an eccentric disc grinding machine with a sanding disc unit that rotates on an eccentric mounted on a drive shaft arranged eccentric is so that the sanding disc unit during operation is a planetary around the axis line of the drive shaft Performs movement, the circular movement is a rotational movement can be superimposed on the axis line of the eccentric pin is by the grinding plate unit one to the eccentric pin coaxial sprocket, which is coaxial with the drive shaft, a different diameter than the ring gear on the plate side toothed ring on one of the grinding plate unit separate ring body is assigned, which in one ineffective state and convertible into an effective state is and in its effective condition with its ring gear a rotatably arranged rolling surface for the plate-like Forming ring gear, the ring body being rotatably supported and is arranged fixed in the axial direction and with his Sprocket permanently, even in its ineffective condition the plate-side ring gear is engaged and the Ring body an externally operable locking device is assigned that between a
- the ring body is located in such a grinding machine in its effective state, the sanding disc unit performs as mentioned, a planetary around the axis line of it driving drive shaft rotating eccentric motion with superimposed Rotation around its own axis, so that results in a hypocycloidal movement overall. Due to the simultaneous rotation of the grinding plate unit is obtained increased material abrasion on the workpiece. In contrast, it does not apply in the case of an ineffective ring body, the forced rotation around the Eccentric pin, so that you get a finer sanding pattern. This operating mode is selected for workpiece finishing.
- the ring body always remains in place. Is located the locking device in its release position, he can because of its rotatable bearing when operating from the plate side Gear rim applied to its gear rim follow freely so that it is attached by the sanding disc unit movement performed in the workpiece machining essentially leaves unaffected.
- the sanding disc unit therefore only leads their circular motion without overlaid forced Self rotation.
- Rolling surface for the plate-side ring gear forms, so that the sanding disc unit operates simultaneously rotates around itself with its circular motion.
- the ring body is non-rotatable and by means of a handle arranged on the outside of the machine in axially adjustable so that its ring gear in the ineffective state out of engagement and in the effective Condition in engagement with the ring gear on the plate side.
- EP 0 573 916 A1 essentially describes a grinding machine known at the outset, in which the ring body not in an ineffective but in one can only be changed due to friction in the housing is. Furthermore, the ring body is arranged on the outside outside in the housing and encloses the ring gear on the plate side.
- US Pat. No. 3,857,206 shows a grinding machine, in which the ring gear-side ring gear within the plate-side Sprocket is arranged.
- the ring body side Ring body bearing ring gear fixed to the housing screwed.
- the drive shaft runs with interposing a pivot bearing through the ring body.
- Ring body is rotatably mounted on the drive shaft, wherein the ring gear on the plate side has a larger diameter than the ring gear has and surrounds the ring body, or that the ring body in the form of a hollow shaft Drive shaft is arranged.
- the head 1; 101 a motor driven Eccentric disc grinding machine shown schematically, whereby those not of interest in the present context Parts are omitted and the outline of the machine housing 2; 102 is only indicated by dash-dotted lines.
- the head 1; 101 housed, housing-fixed parts are all so far marked with the reference number 3; Designated 103.
- a housing area 4 closes; 104 at, in which is housed a motor, not shown.
- the head 1; 101 contains a unit of work that essentially from a drive shaft mounted in the machine housing 2, 102 5; 105 with an eccentric and axially parallel on lower end of the drive shaft 5; 105 attached eccentric pins 6; 106 and one on the eccentric pin 6; 106 by means of a pivot bearing 7; 107 rotatable sanding pad unit 8th; 108 exists.
- the grinding plate unit 8; 108 has one of the machine housing 2; 102 upstream grinding plate 9; 109 for editing of a workpiece as well as a fixed one, for example by Screw, with the grinding plate 9; 109 connected storage unit 10; 110 on the pivot bearing 7; 107 on the eccentric pin 6; 106 is stored.
- the bearing unit forms 10 a hub part 11 mounted on the rotary bearing 7 and one for eccentric pin 6 coaxial ring gear 12, which in the embodiment is attached to the hub part 11.
- the sanding disc unit 8 is not only radially on the inside of the eccentric pin 6 but also against the outside against a housing-fixed part 3 another pivot bearing 13 is mounted.
- the drive takes place via a drive gear 14; 114 at the Embodiments of a bevel gear that is coaxial with the drive shaft 5; 105 is arranged and a central shaft bore has through which the drive shaft 5; 105 takes hold.
- the drive gear 14; 114 sits with help, for example of keys rotatably on the drive shaft 5; 105 and meshes with a bevel gear 15 on the motor side; 115 that at a motor shaft 16 driven by the machine motor; 116 sitting.
- the motor shaft 16; 116 and the drive shaft 5; 105 are at right angles to each other.
- the rotatable bearing of the Drive shaft 5; 105 in the machine housing 2; 102 is done with Help with usual roller bearings 17; 117th
- the ring body 20; 120 is in the machine head 1; 101 rotatably mounted and in axial direction, i.e. in the direction of the drive shaft 5; 105 arranged fixed.
- the ring body 20 is seated on the drive shaft 5 and is on this by means of a suitable Pivot bearing 21 rotatably mounted.
- the plate side Ring gear 12 is an internal ring gear and has one larger diameter than that formed by an external ring gear ring gear-side ring gear 19, so that the plate-side Ring gear 12 encloses the ring gear side ring gear 19.
- the arrangement is Conversely designed so that the ring gear-side ring gear a larger diameter than the ring gear on the plate side and encloses it.
- the plate side Ring gear 112 is an external ring gear
- the ring body side Ring gear 119 is an internal ring gear.
- the ring body 120 sits at the lower end of a central, to drive shaft 105 coaxial bearing shaft 141, via which the ring body 120 on a part 103 fixed to the housing is rotatably mounted.
- the ring body 120 is located within the drive shaft 105 Bearing shaft 141 projects with its opposite body 120 End region 142 from the drive shaft 105.
- the ring body 20; 120 is one from the outside of the Grinding machine actuatable locking device 22; 122 assigned between a ring body 20; 120 non-rotatable arresting locking position (shown in the drawing) and one the ring body 20; 120 releasing release position is adjustable.
- the locking position of the locking device 22; 122 when the ring body 20; 120 in Direction of rotation is held the ring body is located 20; 120 in an effective state in which its ring gear 19; 119 a non-rotatable rolling surface for the plate-side Sprocket 12; 112 forms.
- the Sanding disc unit 8; 108 then not just the eccentric distance e between the axis line 23; 123 of the drive shaft 5; 105 and the axis line 24; 124 of the eccentric pin 6; 106 corresponding, planetary around axis line 23; 123 of the drive shaft 5; 105 circular motion but also one at the same time rotational movement superimposed on this circular movement around axis line 24; 124 of the eccentric pin 6; 106 out of by rolling off the ring gear 12 on the plate side; 112 on the fixed ring gear 19; 119 of the ring body 20; 120 results.
- the one shown in FIG. 2 is Cut so that the locking device and the ring body 20 with its ring gear 19 in the plane of the drawing are located.
- the parts underneath, so in particular the grinding plate unit 8 including the plate side Gear ring 12 are against the clarity been left out.
- the ring body side Sprocket 19 in the axial direction it mainly consists of
- the ring gear-side ring gear is advantageous for reasons of space 19 above, i.e. on the grinding plate 9 opposite Project out in front of the ring gear 12 on the plate side allow.
- This protruding area of the ring body side Sprocket 19 is associated with the locking device 22, which has a locking toothing 25 in the release position arranged outside the ring gear-side ring gear 19 is and in the locking position of the locking device intervenes in this.
- the locking teeth must be used for locking 25 have at least one locking tooth, that fits in the ring gear 19.
- the locking teeth 25 of several locking teeth formed so that the locking teeth 25 a piece extends far along the circumference of the ring gear 9.
- the locking device 22 is essentially one Locking element 26 formed, the locking teeth 25th wearing.
- the movement of the locking device 22 in the axial direction does not have to be exactly linear, since it is also a Swing movement could act in which the locking teeth swings out from the ring body-side ring gear or in swings this.
- the locking element 26 a ring portion 28 enclosing the ring body 20 with a in the axial direction through the engagement opening 29, in the the ring body 20 engages with its teeth 19 when the locking device 22 is in the locking position.
- the locking teeth 25 is on the inner circumference of the Ring section 28, i.e. arranged at the edge of the engagement opening 29.
- the locking element 26 is guided in the axial direction arranged so that it is held non-rotatably.
- the unmovable The arrangement of the locking device also applies in general, since the locking teeth 25 otherwise the could not hold ring body 20.
- the locking element 26 is on both sides of its engagement opening 29 stored. This is done on the one hand by a bearing extension 30 of the locking element 26 formed bearing opening 31 by a housing-fixed bearing pin 32, which is extends in the axial direction, is reached. In the bearing pin 32, a threaded bolt 33 is screwed in from below, whose radially projecting bolt head 34 one Falling of the locking element 26 preventing stop forms.
- the locking element 26 has at its opposite end an also axially directed through opening 35, the one of the locking element 26 and in height holding actuating pin 36 is penetrated from protrudes the locking element 26 and rotatable on the machine housing 2 is stored.
- the actuating pin 26 forms together with an actuator, not shown, with the With the help of the actuating bolts 36 rotated from the outside can be the already mentioned actuator.
- the locking element 26 forms at the location of the actuating bolt 36 a over part of the circumference of the actuating bolt 36 extending, downward, thread-like Slope surface 37, which by a on the actuating pin 36th arranged retaining pin 38 is reached. You twist the actuating pin fixed in its axial direction 36, the holding pin 38 moves along the slope surface 37, so that the locking element 26, one goes from the illustrated Locking position off, is raised so that the locking teeth 25 removed from the teeth 19.
- the holding pin 38 is exposed downwards. Furthermore, the Locking device 22, i.e. in the embodiment of the locking element 26, in the direction of the locking position spring-loaded, expediently by means of a on the actuating pin 36 mounted coil spring 39. This will achieved that the locking element 26 when transferring from the Release position in the locking position when you have the actuating bolt 36 rotated accordingly, not by the retaining pin 38 but is moved downwards by the spring 39, so that the locking teeth 25 in without risk of damage the ring gear 19 can snap.
- the ring body 120 lockable via the bearing shaft 141, which on its from the Drive shaft 105 projecting area a locking gear 143rd with an external toothing 144 carries a locking toothing 125 of the locking device 122 is assigned, which in the release position out of engagement with the locking gear 143 stands and in the locking position in the external toothing 144 of the locking gear 143 engages.
- the locking device 122 contains at least one of the Sprocket of the locking gear 143 radially opposite on the outside Locking jaws 145 (are in the embodiment two such locking jaws diametrically opposite each other Positions) where the locking teeth 125 is arranged.
- Each locking jaw 145 is radial Adjustable direction mounted on the machine housing. In Figure 3 the locking jaws 145 are in engagement with the Locking gear 143 so that the ring body 120 locks in a rotationally fixed manner is. Moving the locking jaws 145 from the shown Position radially outwards, the locking gear comes 143 and with this the ring body 120 free.
- the locking device 122 i.e. in this case the minimum a locking jaw 145, is in the radial direction Locking gear 143 spring-loaded. This applies to everyone Locking jaws 145 against a spring arrangement 139 the force of the respective locking jaw 145 from the locking gear 143 can be moved away.
- the actuator with which this is done is rotated by one mounted on the machine housing and operable from the outside Rotating handle 146 formed in the embodiment concentrically formed around the bearing shaft 142 and on the top of the machine head 101 is arranged. Twisted one turns this handle in the assigned direction this rotary movement with each locking jaw 145 over him assigned cam surface 147 in the force of the spring assembly 139 opposite radial movement implemented.
- the respective spring arrangement presses the relevant locking jaws against the assigned curved surface 147 on the turning handle 146, the curved surface 147 arched at right angles to the plane of the drawing and thereby eccentric to the locking gear 143.
- each curve surface 147 becomes radial inside arranged side surface of a slot-like Recess 148 formed on the underside of the turning handle 146.
- the locking jaws 145 are on the one hand their locking teeth 125 on the respective curve surface 147 and are with its opposite end 149 pivoted on the machine housing stored so that when turning the turning handle 146 a pivotal movement away from the locking gear or execute on this.
- the locking jaws 145 lead in the embodiment not an exact radial movement but a swivel movement.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
- Figur 1
- eine erste Ausführungsform der erfindungsgemäßen Exzenterteller-Schleifmaschine im Längsschnitt in schematischer Teildarstellung, wobei sich die Feststelleinrichtung in ihrer Arretierstellung und der Ringkörper somit in seinem wirksamen Zustand befindet,
- Figur 2
- die Schleifmaschine nach Figur 1 im Querschnitt gemäß der Schnittlinie II-II und
- Figur 3
- eine zweite Ausführungsform der erfindungsgemäßen Exzenterteller-Schleifmaschine in einer der Figur 1 entsprechenden Darstellung.
Claims (10)
- Exzenterteller-Schleifmaschine mit einer Schleiftellereinheit (8; 108), die drehbar an einem exzentrisch an einer Antriebswelle (5; 105) angeordneten Exzenterzapfen (6; 106) gelagert ist, so dass die Schleiftellereinheit (8; 108) beim Betrieb eine planetarisch um die Achslinie der Antriebswelle (5; 105) kreisende Bewegung ausführt, wobei der kreisenden Bewegung eine Rotationsbewegung um die Achslinie des Exzenterzapfens (6, 106) überlagerbar ist, indem die Schleiftellereinheit (8; 108) einen zum Exzenterzapfen (6; 106) koaxialen Zahnkranz (12; 112) trägt, dem ein zur Antriebswelle (5; 105) koaxialer, einen anderen Durchmesser als der tellerseitige Zahnkranz (12, 112) aufweisender Zahnkranz (19, 119) an einem von der Schleiftellereinheit (8; 108) gesonderten Ringkörper (20; 120) zugeordnet ist, der in einen unwirksamen Zustand und in einen wirksamen Zustand überführbar ist und in seinem wirksamen Zustand mit seinem Zahnkranz (19; 119) eine drehfest angeordnete Abwälzfläche für den tellerseitigen Zahnkranz (12; 112) bildet, wobei der Ringkörper (20; 120) drehbar gelagert und in axialer Richtung feststehend angeordnet ist und mit seinem Zahnkranz (19; 119) dauernd, auch in seinem unwirksamen Zustand, mit dem tellerseitigen Zahnkranz (12, 112) in Eingriff steht und wobei dem Ringkörper (20; 120) eine von außen her betätigbare Feststelleinrichtung (22; 122) zugeordnet ist, die zwischen einer den Ringkörper (20; 120) freigebenden Freigabestellung, in der der Ringkörper (20; 120) unwirksam ist, und einer den Ringkörper (20; 120) drehfest arretierenden Arretierstellung, in der sich der Ringkörper (20; 120) in seinem wirksamen Zustand befindet, verstellbar ist, dadurch gekennzeichnet, dass der Ringkörper (20) auf der Antriebswelle (5) drehbar gelagert ist, wobei der tellerseitige Zahnkranz (12) einen größeren Durchmesser als der ringkörperseitige Zahnkranz (19) aufweist und diesen umschließt, oder dass der Ringkörper (120) in der als Hohlwelle ausgebildeten Antriebswelle (105) angeordnet ist.
- Exzenterteller-Schleifmaschine nach Anspruch 1, bei der der Ringkörper (20) auf der Antriebswelle (5) drehbar gelagert ist, dadurch gekennzeichnet, dass der ringkörperseitige Zahnkranz (19) in axialer Richtung vor den tellerseitigen Zahnkranz (12) vorsteht und dass die Feststelleinrichtung (22) eine Arretierverzahnung (25) aufweist, die in der Freigabestellung außerhalb des ringkörperseitigen Zahnkranzes (19) angeordnet ist und in der Arretierstellung in diesen eingreift.
- Exzenterteller-Schleifmaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Feststelleinrichtung (22) in axialer Richtung zwischen der Freigabestellung und der Arretierstellung verstellbar ist.
- Exzenterteller-Schleifmaschine nach Anspruch 1, bei der der Ringkörper (120) in der Antriebswelle (105) angeordnet ist, dadurch gekennzeichnet, dass die Antriebswelle (105) eine Hohlwelle und der Exzenterzapfen (106) ein Hohlzapfen ist und dass die Schleiftellereinheit (108) einen in dem Hohlzapfen gelagerten Lagerzapfen (111) enthält, der den tellerseitigen Zahnkranz (112) trägt.
- Exzenterteller-Schleifmaschine nach Anspruch 1 oder 4, dadurch gekennzeichnet, dass der tellerseitige Zahnkranz (112) einen kleineren Durchmesser als der ringkörperseitige Zahnkranz (119) aufweist.
- Exzenterteller-Schleifmaschine nach einem der Ansprüche 1, 4 oder 5, dadurch gekennzeichnet, dass der Ringkörper (120) an einer aus der Antriebswelle (105) ragenden Lagerwelle (141) sitzt, über die der Ringkörper (120) mittels der Feststelleinrichtung (122) arretierbar ist.
- Exzenterteller-Schleifmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Lagerwelle (141) an ihrem aus der Antriebswelle (105) ragenden Bereich ein Feststellzahnrad (143) trägt und die Feststelleinrichtung (122) eine Arretierverzahnung (125) aufweist, die in der Freigabestellung der Feststelleinrichtung außer Eingriff mit dem Feststellzahnrad (143) steht und in der Arretierstellung in das Feststellzahnrad (143) eingreift.
- Exzenterteller-Schleifmaschine nach Anspruch 7, dadurch gekennzeichnet, dass die Feststelleinrichtung (122) mindestens einen dem Zahnkranz des Feststellzahnrads gegenüberliegenden Arretierbacken (145) mit einer Arretierverzahnung (125) enthält, der mittels einer Betätigungseinrichtung im Wesentlichen in radialer Richtung des Feststellzahnrades (143) verstellbar ist.
- Exzenterteller-Schleifmaschine nach Anspruch 8, dadurch gekennzeichnet, dass die Betätigungseinrichtung von einer verdrehbar am Maschinengehäuse gelagerten Drehhandhabe (146) gebildet wird, wobei eine Drehbewegung der Drehhandhabe (146) über eine Kurvenfläche (147) in eine Radialbewegung des mindestens einen Arretierbackens (145) umgesetzt wird.
- Exzenterteller-Schleifmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Feststelleinrichtung (22; 122) in Richtung auf ihre Arretierstellung hin federbelastet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19905624A DE19905624A1 (de) | 1999-02-11 | 1999-02-11 | Exzenterteller-Schleifmaschine |
DE19905624 | 1999-02-11 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1027958A2 EP1027958A2 (de) | 2000-08-16 |
EP1027958A3 EP1027958A3 (de) | 2003-04-16 |
EP1027958B1 true EP1027958B1 (de) | 2004-08-04 |
Family
ID=7897124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00101027A Expired - Lifetime EP1027958B1 (de) | 1999-02-11 | 2000-01-20 | Exzenterteller-Schleifmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1027958B1 (de) |
DE (2) | DE19905624A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054266B3 (de) * | 2006-11-17 | 2008-01-10 | Festool Gmbh | Handwerkzeugmaschine mit einer Blockiervorrichtung |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19952108B4 (de) | 1999-10-29 | 2007-09-20 | Robert Bosch Gmbh | Exzentertellerschleifmaschine |
DE10329827B4 (de) * | 2003-06-27 | 2005-09-15 | Festool Gmbh | Exzentertellerschleifer |
JP6464017B2 (ja) | 2014-05-09 | 2019-02-06 | 株式会社マキタ | 研磨機 |
DE102014109904A1 (de) * | 2014-07-15 | 2016-01-21 | C. & E. Fein Gmbh | Exzenterschleifer |
DE102018219620A1 (de) | 2018-11-16 | 2020-05-20 | Robert Bosch Gmbh | Exzenterschleifer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3857206A (en) * | 1973-03-08 | 1974-12-31 | Nat Detroit Inc Co | Compound motion rubbing machine |
JP3063872B2 (ja) * | 1992-06-08 | 2000-07-12 | 株式会社マキタ | 研磨機 |
-
1999
- 1999-02-11 DE DE19905624A patent/DE19905624A1/de not_active Withdrawn
-
2000
- 2000-01-20 EP EP00101027A patent/EP1027958B1/de not_active Expired - Lifetime
- 2000-01-20 DE DE50007236T patent/DE50007236D1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006054266B3 (de) * | 2006-11-17 | 2008-01-10 | Festool Gmbh | Handwerkzeugmaschine mit einer Blockiervorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE50007236D1 (de) | 2004-09-09 |
DE19905624A1 (de) | 2000-08-17 |
EP1027958A3 (de) | 2003-04-16 |
EP1027958A2 (de) | 2000-08-16 |
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