EP1117507A1 - Schleifwerkzeug - Google Patents
SchleifwerkzeugInfo
- Publication number
- EP1117507A1 EP1117507A1 EP98944948A EP98944948A EP1117507A1 EP 1117507 A1 EP1117507 A1 EP 1117507A1 EP 98944948 A EP98944948 A EP 98944948A EP 98944948 A EP98944948 A EP 98944948A EP 1117507 A1 EP1117507 A1 EP 1117507A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding tool
- tool according
- grinding
- slots
- abrasive
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
- B24D13/06—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery the flaps or strips being individually attached
-
- 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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
Definitions
- the present invention relates to a grinding tool according to the preamble of claim 1.
- a large number of grinding tools are known for the mechanical, abrasive processing of surfaces.
- rotary grinding tools are known, in which the abrasive in the form of abrasive surfaces having abrasive cloths with carrier material made of textile or cellulosic material or plastic is arranged so as to protrude radially from a driven cylindrical base body.
- the rotating tool is now guided over the surface to be machined, the free ends of the abrasive striking the surface one after the other and being pulled over it.
- the tool can either be used in an automatic machine or used for manual processing.
- This known construction is particularly suitable in the form of small tool diameters for the machining of hard workpieces, for example made of metal.
- machining soft workpieces for example made of wood
- this problem occurs even more after the running-in phase of the tool, according to which the abrasives have different shapes at the ends due to use.
- the abrasive must then be controlled or moved several times over the entire surface by hand in order to process them as a whole, which on the one hand is time-consuming and on the other hand, in turn, presents problems in achieving a homogeneous grinding pattern.
- the object of the present invention was to find a grinding tool which is also capable of processing workpieces made of soft material, such as wood, for example, and with a curved surface.
- the inventive design of the grinding tool even with large dimensions of the tool, or. with a large machining width, an abrasive that also follows curved contours is created, which in particular can also be used very well for machining soft workpieces, such as wood.
- the tool can be built relatively wide, that is to say have a wide machining area, and thus also process large workpieces with a curved surface in a few work steps.
- the surfaces of three-dimensionally curved bodies are optimally and quickly machined. beit, even with soft material of the workpiece such as wood.
- the tool according to the invention also has a long service life and is relatively easy to maintain or to chat.
- the tool according to the invention is also particularly suitable for machining soft workpieces, but can also be used advantageously for workpieces with a hard surface and / or a straight surface.
- Figure 1 is a schematic view of an inventive grinding tool.
- FIG. 2 shows the detail view of a grinding tool according to FIG. 1 on the grinding means
- FIG. 3 is a partial view of the base clamping body with holding rods of the grinding tool according to FIG. 1;
- FIG. 4 shows the longitudinal section through an abrasive tool in an alternative embodiment in the area of the abrasive.
- FIG. 6 shows the section through an abrasive with a holding rod and spacers.
- the view of a grinding tool according to the invention is shown schematically in FIG.
- the grinding tool has a cylindrical base clamping body 1 with a drive shaft 2 and sheet-shaped grinding means 3 projecting radially outward therefrom. Between the grinding means 3 there are in each case
- Spacers 4 are arranged, which space the abrasives 3 from each other and keep them in shape.
- the grinding tool is now rotated by means of a motor via the drive axis 2 and then brought tangentially to a workpiece to be machined.
- the grinding tool can be set up stationary and the workpiece to be machined can be guided tangentially to the rotating grinding tool, for example by means of a gripping arm, which can be numerically controlled.
- FIG. 2 shows a partial view of one of the sheet-like abrasives 3.
- the abrasive 3 has, for example, an essentially rectangular shape and has slots 5, 6 that extend essentially in the radial direction with respect to the drive axis 2 of the grinding tool.
- the slots 5,6 have, for example, a rectangular shape.
- the slots 5 arranged towards the free end of the abrasive 3 preferably extend as far as the free edge of the abrasive 3, ie there are slots open to the outside.
- the slots 6 located further inwards against the axis of rotation 2 are arranged such that their upper edge 6 'is arranged radially further away from the axis of rotation 2 than the lower edges 5' of the slots 5, ie adjacent slots 5.6 are offset from one another so as to overlap arranged.
- This configuration of the abrasive 3 creates a coherent abrasive 3 on the one hand, the free edge through the slots 5 and. 6 is divided into flags that can be deflected practically independently of one another and thus forms a flexible grinding edge which can also follow strongly shaped, three-dimensional contours of workpieces to be machined.
- the abrasive 3 are deflected in operation when hitting the workpiece to be machined against the direction of rotation. pushed away. It has now been shown that the arrangement of the slots 5, 6 according to the invention advantageously allows the individual edge sections of each abrasive 3 to nestle against one another and practically form a homogeneous grinding plane.
- the abrasives 3 are preferably arranged one behind the other in the base clamping body 1 in such a way that the slots 5 and / or. 6 are not arranged directly one behind the other, but are laterally offset by at least the width of the slots or larger.
- the abrasives 3 have a conventional structure made of a sheet-like carrier material, which is provided on one or both sides with an abrasive grinding member, such as for example sand or corunt grains.
- the carrier material can consist of cellulosic or artificial material.
- the abrasives 3 are according to the invention by means of holding rods 7 with the grinding tool, respectively. connected to the basic clamping body 1 of the grinding tool.
- FIG. 3 the partial view of a part of the basic clamping body 1 is shown, namely the holding disk 8 for the holding bars 7.
- the preferably cylindrical holding bars 7 are individually rotatably supported in bores in the holding disk 8 about their longitudinal axes.
- only one retaining disk 8 with a few retaining rods 7 is shown in FIG. 3, the opposite retaining disk 8 'is only indicated by dashed lines.
- FIG 4 the longitudinal section through the outer region of the base clamping body 1 with two retaining disks 8 and respectively. 8 'and inserted holding rod 7 shown.
- the support rods 7 are respectively on the outside of the holding washers 8 and. 8 'attached rings 9 held against axial displacement.
- the rings 9 are, for example, clamped against one another via a clamping connection 10, for example through clamping screws, and can thus also connect the retaining disks 8 and 8 'to one another.
- the support rods 7 should be made narrow for reasons of weight and strength, it is preferably provided between the two holding washers 8 and 8 respectively. 8 'if necessary to use additional support disks 11. Instead of bores, as the holding disks 8, 8 ′ have, the support disks 11 have semicircular or U-shaped slots which are open radially outwards and through which the holding rods 7 extend radially from the outside can be introduced. It is also preferably provided to arrange a tether 12 around the periphery of the support disk 11. This serves to prevent the holding rods 7 from bending outwards during operation, especially at high speeds, under the load and, in extreme cases, from the corresponding bores in the holding disks 8 or. 8 'can be pulled out. This tether 12 thus serves primarily as a safety means and can be tensioned against the drive axis 2 of the grinding tool 1 by means of tensioning devices.
- the corner areas of the grinding means 3 can also be rounded, as shown in FIG. 5 in an alternative embodiment.
- the slots 5 can also, for example, rounded corners, lenticular shape or a slightly curved or. have a curved longitudinal line.
- FIG. 6 shows the section through an abrasive 3, which is fastened to a holding rod 7.
- an eye 3 ′ can be formed in the lower region of the abrasive 3, which can be pushed over the holding rod 7.
- other types of attachment of the abrasive means 3 to the holding rods 7 are also conceivable, such as by passing through holding slots in the holding rods 7.
- the spacer elements 4 are arranged on both sides of the abrasive 3, as can also be seen from FIG.
- the spacer elements 4 are preferably of the same width as the abrasive means 3 with a lower height.
- the spacer elements 4 can, for example, be connected directly to the corresponding sides of the grinding means 3, for example glued to them, or else be connected to one another, the connecting element, for example a clip or rivet, being guided through a corresponding opening in the abrasive 3.
- the spacer elements 4 are only in the foot region of the abrasive 3 with this. connected to one another and lie radially outward on the surface of the abrasive 3.
- the grinding tool according to the invention is particularly suitable for machining large, three-dimensionally shaped workpieces in one operation.
- the inventive design of the grinding tool can advantageously be carried out in large dimensions, preferably with a diameter of more than 500 mm, which enables the processing of such workpieces in a single operation. Due to the inventive design of the
- abrasive 3 with slots 5, 6 achieves a flexible processing zone over the entire width of the tool, which also makes it possible to process soft materials such as wood in particular.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH1998/000422 WO2000020171A1 (de) | 1998-10-02 | 1998-10-02 | Schleifwerkzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1117507A1 true EP1117507A1 (de) | 2001-07-25 |
EP1117507B1 EP1117507B1 (de) | 2003-01-02 |
Family
ID=4551357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98944948A Expired - Lifetime EP1117507B1 (de) | 1998-10-02 | 1998-10-02 | Schleifwerkzeug |
Country Status (7)
Country | Link |
---|---|
US (1) | US6491576B1 (de) |
EP (1) | EP1117507B1 (de) |
AT (1) | ATE230328T1 (de) |
AU (1) | AU9249898A (de) |
DE (1) | DE59806834D1 (de) |
DK (1) | DK1117507T3 (de) |
WO (1) | WO2000020171A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013014075A1 (en) | 2011-07-22 | 2013-01-31 | Solvay Sa | Unloading device, unloading process and unloaded powder |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3006221B1 (fr) * | 2013-05-31 | 2015-07-03 | Snecma | Outil de meulage |
CA2959779C (en) | 2016-03-04 | 2019-06-11 | The Libman Company | Scissor-style toilet brush |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2259475A (en) * | 1940-04-10 | 1941-10-21 | Koppers Co Inc | Apparatus for reconditioning engine cylinders |
US3869833A (en) | 1974-03-21 | 1975-03-11 | James A Belanger | Rotary finishing wheel |
JPS5789566A (en) * | 1980-11-17 | 1982-06-03 | Sankyo Rikagaku Kk | Abrasive blade wheel |
DE3145151C2 (de) | 1981-11-13 | 1986-02-06 | Bayerische Motoren Werke AG, 8000 München | Antreibbare Walze zum Überschleifen oder Polieren der Oberfläche einer Fahrzeugkarosserie oder dergleichen |
US4882880A (en) * | 1988-05-17 | 1989-11-28 | Schaffner Manufacturing Company, Inc. | Ganging of buffing wheels |
US5355639A (en) * | 1990-07-04 | 1994-10-18 | Commissariat A L'energie Atomique | Device for machining of contours made of a soft material and automatic machining method using such a device |
US5157874A (en) * | 1990-08-20 | 1992-10-27 | Peng Shih Jen | Rotary multi-brushes |
JPH07314337A (ja) * | 1994-05-25 | 1995-12-05 | Taku Nakasaki | 研磨用回転部材の製造方法 |
JP2729924B2 (ja) * | 1994-07-29 | 1998-03-18 | 株式会社スリーエフ技研 | 排熱用の通気路を備えた研磨ホイール |
DE29617206U1 (de) * | 1996-10-02 | 1996-12-05 | Osborn International Gmbh | Rotationsbürste zur Oberflächenbehandlung von Werkstücken |
-
1998
- 1998-02-10 US US09/806,664 patent/US6491576B1/en not_active Expired - Fee Related
- 1998-10-02 DK DK98944948T patent/DK1117507T3/da active
- 1998-10-02 EP EP98944948A patent/EP1117507B1/de not_active Expired - Lifetime
- 1998-10-02 AU AU92498/98A patent/AU9249898A/en not_active Abandoned
- 1998-10-02 DE DE59806834T patent/DE59806834D1/de not_active Expired - Fee Related
- 1998-10-02 AT AT98944948T patent/ATE230328T1/de not_active IP Right Cessation
- 1998-10-02 WO PCT/CH1998/000422 patent/WO2000020171A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0020171A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013014075A1 (en) | 2011-07-22 | 2013-01-31 | Solvay Sa | Unloading device, unloading process and unloaded powder |
Also Published As
Publication number | Publication date |
---|---|
EP1117507B1 (de) | 2003-01-02 |
AU9249898A (en) | 2000-04-26 |
DE59806834D1 (de) | 2003-02-06 |
DK1117507T3 (da) | 2003-04-22 |
ATE230328T1 (de) | 2003-01-15 |
WO2000020171A1 (de) | 2000-04-13 |
US6491576B1 (en) | 2002-12-10 |
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