EP0460133A1 - Exzenterschleifmaschine. - Google Patents
Exzenterschleifmaschine.Info
- Publication number
- EP0460133A1 EP0460133A1 EP19900917589 EP90917589A EP0460133A1 EP 0460133 A1 EP0460133 A1 EP 0460133A1 EP 19900917589 EP19900917589 EP 19900917589 EP 90917589 A EP90917589 A EP 90917589A EP 0460133 A1 EP0460133 A1 EP 0460133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- sanding
- plate
- markings
- grinding plate
- 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
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 102100039398 C-X-C motif chemokine 2 Human genes 0.000 claims description 2
- 101100061856 Homo sapiens CXCL2 gene Proteins 0.000 claims description 2
- 101100271190 Plasmodium falciparum (isolate 3D7) ATAT gene Proteins 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract description 2
- 210000003464 cuspid Anatomy 0.000 abstract 1
- 238000001000 micrograph Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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 is based on an eccentric grinding machine according to the preamble of claim 1.
- DE-OS 36 09 441 US-PS 47 59 152
- a machine with a grinding plate which carries two different sized gear rings on its back, which cause a different amount of abrasion on the machined workpiece when the rotational movement is at different speeds.
- the eccentric grinder produces a coarse or a fine cut.
- the eccentric grinding machine according to the invention with the characterizing features of claim 1 has the advantage that the grinding pattern is displayed even when the grinding plate is rotating.
- the measures listed in claims 2ff enable advantageous developments and improvements of the eccentric grinding machine specified in claim 1.
- a stationary cycloid image also results with, for example, a half-integer number of nodes, the distances between the stationary nodes are reduced.
- FIG. 1 shows a partial cross section through an eccentric grinding machine
- FIG. 2 shows a view of a grinding plate
- FIG. 3 shows a micrograph.
- An eccentric grinding machine as described for example in DE-OS 36 09 441, shows a housing 3, a central eccentric gear 4 and a rolling gear 5 which is partially connected to the housing 3.
- the eccentric gear 4 comprises a connector 6 which is connected to the shaft of a drive motor, not shown.
- An eccentric sleeve 7 is connected eccentrically to the connecting piece 6, within which a roller-supported support pin 8 is rotatably mounted.
- a grinding plate 10 is firmly connected by a screw 9.
- the sanding plate 10 is provided on the side facing away from the eccentric gear 4 with an abrasive surface, in particular an abrasive paper 11.
- the sanding paper 11 can be glued on or through. Velcro fastener can be connected to the grinding plate 10.
- the grinding plate 10 On the side facing the eccentric gear 4, the grinding plate 10 carries two ring gears 12 and
- the toothed ring 14 has an external toothing 15 and an internal toothing 16 which in the axial direction have two different levels.
- the internal toothing 16 of the toothed ring 14 engages in the ring gear 12 of the grinding plate 10.
- the external toothing 15 of the change ring 14 meshes with an internally toothed housing ring gear 17 which is fixedly connected to the housing 3.
- the toothed ring 14 can be turned so that its outer toothing 15 meshes with the ring gear 13 of the grinding plate 10 and the inner toothing 16 of the toothed ring 14 meshes with an externally toothed housing ring gear 18 fastened to the housing 3.
- the toothed ring 14 is part of the rolling mechanism 5, which causes the grinding plate 10 to roll as a result of the deflection of the grinding plate 10 caused by the eccentric gear 4 in a forced rotational movement relative to the housing 3.
- the rolling movement takes place either in the same direction as the eccentric movement, the ring gear 13 of the grinding plate rolling on the toothed ring 14, or the rotational movement takes place counter to the eccentric movement.
- the ring gear 12 rolls on the toothed ring 14.
- the mode of operation shown in FIG. 1 results in a fine, less abrasive cut, the other mode of operation gives a coarse cut with a large amount of abrasion.
- FIG. 3 shows a grinding image generated by the grinding plate 10 in the rough grinding operating mode.
- the developing hypocycloids 21 with a number n of fifteen reversal points or nodes 22 are clear.
- the nodes n are each at a distance of an angle of rotation «of 24 ° to one another.
- the angle of rotation C ⁇ is calculated
- the markings 20 are each placed on the radius of the usual hypocycloid at a distance from the angle of rotation.
- n of nodes 22, as shown in FIG. 3, is obtained when the partial circle circumference U of the ring gear or the external toothing 15 on the toothed ring 14 of the rolling gear 5 to the partial circle circumference U of the ring gear 12 of the grinding plate 10 in the following relationship stand.
- n of nodes 22 there are cycloids standing on the grinding plate 10.
- the markings 20 then appear as fixed symbols or lettering.
- An integer number n of nodes 22 results if the quotient from the number of degrees of the full circle - by the number of degrees of the angle of rotation Oi - is an integer. If this quotient is half-integer, for example 15.5, then more are formed in the micrograph, in the example thirty-one standing nodes.
- the grinding pattern from FIG. 3 can be produced if the toothed ring 13 of the grinding plate 10 has sixty teeth and the external toothing 15 of the toothed ring 14 has fifty-six teeth.
- the markings 20 can instead of the sanding paper 12 also be placed on the back of the sanding plate 10 on circular arcs with the radii of the partial circles of the toothed rings 12 and 13.
- a window 24 can be arranged on the housing 3 of the eccentric grinding machine 2 through which through in FIG. 1, for example, the marking 20 for the rough grinding becomes visible.
- the function of the eccentric grinding machine is described in detail in DE-OS 36 09 441.
- the optical display of the micrograph according to the invention is based on the effect that the grinding plate 10 stands still for a short time during its rolling movement, in each case forming the knots 22, so that the markings 20 applied become visible at this moment. If a marker 20 is attached to each node 22, a physical marker 20 is circulated at the virtual location of the next during the rolling movement. This happened with each of the markings 22, so that the repeated visualization of this large number of markings 20 at the same virtual location on the grinding wheel intensifies the optically visible display.
- the invention is not limited to the exemplary embodiment.
- a separate sanding plate is required for each sanding movement.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3942301 | 1989-12-12 | ||
| DE3942301A DE3942301C1 (de) | 1989-12-21 | 1989-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0460133A1 true EP0460133A1 (de) | 1991-12-11 |
| EP0460133B1 EP0460133B1 (de) | 1993-10-27 |
Family
ID=6396024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90917589A Expired - Lifetime EP0460133B1 (de) | 1989-12-21 | 1990-12-04 | Exzenterschleifmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5167095A (de) |
| EP (1) | EP0460133B1 (de) |
| BR (1) | BR9007142A (de) |
| DE (2) | DE3942301C1 (de) |
| WO (1) | WO1991009705A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2104137T3 (es) * | 1992-04-13 | 1997-10-01 | Minnesota Mining & Mfg | Articulo abrasivo. |
| JP3063872B2 (ja) * | 1992-06-08 | 2000-07-12 | 株式会社マキタ | 研磨機 |
| US5331028A (en) * | 1993-06-30 | 1994-07-19 | Chevron Research And Technology Company, A Division Of Chevron U.S.A. Inc. | Polymer-modified asphalt composition and process for the preparation thereof |
| GB9322174D0 (en) * | 1993-10-28 | 1993-12-15 | Minnesota Mining & Mfg | Abrasive article |
| CA2220776A1 (en) * | 1996-11-13 | 1998-05-13 | Allen Sommers | Eccentric grinder loading system |
| US6062960A (en) * | 1998-04-27 | 2000-05-16 | Ryobi North America, Inc. | Orbital tool |
| US5947804A (en) | 1998-04-27 | 1999-09-07 | Ryobi North America, Inc. | Adjustable eccentricity orbital tool |
| WO2007117129A1 (en) * | 2006-03-03 | 2007-10-18 | Ferronato Sandro Giovanni Gius | System for indicating the grade of an abrasive |
| DE102007007787A1 (de) * | 2007-02-16 | 2008-08-21 | Robert Bosch Gmbh | Schleifteller für eine Exzenterschleifmaschine |
| US9217492B2 (en) | 2013-11-22 | 2015-12-22 | Techtronic Power Tools Technology Limited | Multi-speed cycloidal transmission |
| JP6249828B2 (ja) * | 2014-03-07 | 2017-12-20 | 日東工器株式会社 | 研磨機 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3550324A (en) * | 1968-04-17 | 1970-12-29 | Red Arrow Enterprises Inc | Surface treating apparatus |
| DE3602571C2 (de) * | 1986-01-29 | 1998-09-24 | Bosch Gmbh Robert | Exzentertellerschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
| DE3609441A1 (de) * | 1986-03-20 | 1987-09-24 | Bosch Gmbh Robert | Exzenterschleifer mit einer vorrichtung zum veraendern der schleifbewegung |
| DE3615799C2 (de) * | 1986-05-10 | 1994-10-13 | Bosch Gmbh Robert | Exzenterschleifer mit einer Vorrichtung zum Verändern der Schleifbewegung |
| DE3727487A1 (de) * | 1987-08-18 | 1989-03-02 | Miksa Marton | Handschleifmaschine |
-
1989
- 1989-12-21 DE DE3942301A patent/DE3942301C1/de not_active Expired - Lifetime
-
1990
- 1990-12-04 BR BR909007142A patent/BR9007142A/pt not_active IP Right Cessation
- 1990-12-04 US US07/720,842 patent/US5167095A/en not_active Expired - Fee Related
- 1990-12-04 EP EP90917589A patent/EP0460133B1/de not_active Expired - Lifetime
- 1990-12-04 DE DE90917589T patent/DE59003258D1/de not_active Expired - Fee Related
- 1990-12-04 WO PCT/DE1990/000936 patent/WO1991009705A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9109705A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9007142A (pt) | 1991-12-17 |
| WO1991009705A1 (de) | 1991-07-11 |
| EP0460133B1 (de) | 1993-10-27 |
| DE59003258D1 (de) | 1993-12-02 |
| US5167095A (en) | 1992-12-01 |
| DE3942301C1 (de) | 1991-02-14 |
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Legal Events
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