EP1027958A2 - Meuleuse à plateau excentrique - Google Patents

Meuleuse à plateau excentrique Download PDF

Info

Publication number
EP1027958A2
EP1027958A2 EP00101027A EP00101027A EP1027958A2 EP 1027958 A2 EP1027958 A2 EP 1027958A2 EP 00101027 A EP00101027 A EP 00101027A EP 00101027 A EP00101027 A EP 00101027A EP 1027958 A2 EP1027958 A2 EP 1027958A2
Authority
EP
European Patent Office
Prior art keywords
locking
ring body
gear
eccentric
ring
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
Application number
EP00101027A
Other languages
German (de)
English (en)
Other versions
EP1027958A3 (fr
EP1027958B1 (fr
Inventor
Johannes Dr. Steimel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TTS Tooltechnic Systems AG and Co KG
Original Assignee
Festo Tooltechnic GmbH and Co
TTS Tooltechnic Systems AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Festo Tooltechnic GmbH and Co, TTS Tooltechnic Systems AG and Co KG filed Critical Festo Tooltechnic GmbH and Co
Publication of EP1027958A2 publication Critical patent/EP1027958A2/fr
Publication of EP1027958A3 publication Critical patent/EP1027958A3/fr
Application granted granted Critical
Publication of EP1027958B1 publication Critical patent/EP1027958B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 of the drive shaft Executes 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 is assigned separate ring body, which in a 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 Sprocket forms.
  • the ring body is located in such a grinding machine in its effective state, the sanding disc unit leads, as mentioned, a planetary around the axis line of it driving drive shaft with circular eccentric movement 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.
  • annular body of the type mentioned at the beginning can by means of one arranged on the outside of the machine Handle can be adjusted in the axial direction so that a Sprocket in inactive condition out of engagement and in effective Condition in engagement with the ring gear on the plate side stands.
  • the present invention has the object based on the well-known grinding machine also to create a reliable and structurally simple alternative.
  • Ring body rotatably supported and fixed in the axial direction is arranged and with its ring gear permanently, also in its ineffective condition, with the ring gear on the plate side is engaged and that the ring body one from the outside Actuable locking device is assigned between a release position releasing the ring body, in which the ring body is ineffective, and one rotates the ring body arresting locking position in which the ring body is in its effective state, is adjustable.
  • the ring body always remains in place. If the locking device is in its release position, it can because of its rotatable bearing Operation from the plate-side gear rim to its gear rim freely exerted forces, so that he is the of the Sanding disc unit executed during workpiece processing Movement is essentially unaffected.
  • the sanding disc unit therefore, as with the known grinding machine, if their ring gear arranged on the ring body except Engagement with the ring gear on the plate side is only yours circular motion without superimposed forced self-rotation out.
  • 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 from 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 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 feather keys test 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 sits.
  • 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; 117.
  • 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. Therefore, the plate side Ring gear 112 is an external ring gear and the ring body side Ring gear 119 is an external 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 protrudes 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 ring body can 20 Rotate 120 freely and onto the ring gear 19; 119 acting forces follow, so that the ring body 20, 120 is ineffective.
  • the two sprockets 12, 19; 112, 119 are still engaged with each other, because of the free rotatability of the ring body 20; However, the tooth mesh remains ineffective.
  • 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 Sprocket 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 on the ring body side is advantageous 19 above, i.e. on the opposite of the grinding plate 9 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 of the ring gear-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 that shown 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 Digits) where the locking teeth 125 is arranged.
  • Each locking jaw 145 is radial Adjustable direction mounted on the machine housing. In Figure 3 are the locking jaws 145 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 carried out 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 cam surface 147 on the turning handle 146, the curved surface 147 arched at right angles to the plane of the drawing and thereby eccentric runs to the locking gear 143.
  • each curve surface 147 becomes radial internally 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, no exact radial movement but a pivoting movement.
EP00101027A 1999-02-11 2000-01-20 Meuleuse à plateau excentrique Expired - Lifetime EP1027958B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19905624 1999-02-11
DE19905624A DE19905624A1 (de) 1999-02-11 1999-02-11 Exzenterteller-Schleifmaschine

Publications (3)

Publication Number Publication Date
EP1027958A2 true EP1027958A2 (fr) 2000-08-16
EP1027958A3 EP1027958A3 (fr) 2003-04-16
EP1027958B1 EP1027958B1 (fr) 2004-08-04

Family

ID=7897124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101027A Expired - Lifetime EP1027958B1 (fr) 1999-02-11 2000-01-20 Meuleuse à plateau excentrique

Country Status (2)

Country Link
EP (1) EP1027958B1 (fr)
DE (2) DE19905624A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2357256A (en) * 1999-10-29 2001-06-20 Bosch Gmbh Robert Hand-held eccentric grinder

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10329827B4 (de) * 2003-06-27 2005-09-15 Festool Gmbh Exzentertellerschleifer
DE102006054266B3 (de) * 2006-11-17 2008-01-10 Festool Gmbh Handwerkzeugmaschine mit einer Blockiervorrichtung
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857206A (en) * 1973-03-08 1974-12-31 Nat Detroit Inc Co Compound motion rubbing machine
EP0573916A1 (fr) * 1992-06-08 1993-12-15 Makita Corporation Ponceuse à plateau excentrique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857206A (en) * 1973-03-08 1974-12-31 Nat Detroit Inc Co Compound motion rubbing machine
EP0573916A1 (fr) * 1992-06-08 1993-12-15 Makita Corporation Ponceuse à plateau excentrique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2357256A (en) * 1999-10-29 2001-06-20 Bosch Gmbh Robert Hand-held eccentric grinder
US6394884B1 (en) 1999-10-29 2002-05-28 Robert Bosch Gmbh Motor-driven hand grinder
GB2357256B (en) * 1999-10-29 2002-06-05 Bosch Gmbh Robert Motor-driven hand-held grinding machine

Also Published As

Publication number Publication date
EP1027958A3 (fr) 2003-04-16
EP1027958B1 (fr) 2004-08-04
DE19905624A1 (de) 2000-08-17
DE50007236D1 (de) 2004-09-09

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