EP0119632B1 - Bande abrasive - Google Patents

Bande abrasive Download PDF

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Publication number
EP0119632B1
EP0119632B1 EP84103057A EP84103057A EP0119632B1 EP 0119632 B1 EP0119632 B1 EP 0119632B1 EP 84103057 A EP84103057 A EP 84103057A EP 84103057 A EP84103057 A EP 84103057A EP 0119632 B1 EP0119632 B1 EP 0119632B1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding tool
belt
block
support element
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
Application number
EP84103057A
Other languages
German (de)
English (en)
Other versions
EP0119632A3 (en
EP0119632A2 (fr
Inventor
Gerd Braasch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84103057T priority Critical patent/ATE33357T1/de
Publication of EP0119632A2 publication Critical patent/EP0119632A2/fr
Publication of EP0119632A3 publication Critical patent/EP0119632A3/de
Application granted granted Critical
Publication of EP0119632B1 publication Critical patent/EP0119632B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • the invention relates to a grinding tool for a grinding machine for grinding profiles, with a carrier element, on the working side of which are attached substantially uniformly distributed grinding sections over the length of the carrier element, the thickness of which is a multiple of the thickness of the carrier element and each of which is at its the surface facing away from the carrier element has a contour corresponding to the profile to be ground.
  • a grinding tool of the type described above is known from BE-A - 54 36 44.
  • a V-belt is used there as a carrier element, which is glued with sections of abrasive. Each section is a block-shaped part and consists of abrasive material grains bonded together by binders.
  • the known sanding belt therefore differs from conventional sanding belts for belt sanding machines only in the arrangement of the abrasive in mutually adjacent sections on the carrier element, while in the case of a conventional sanding belt the carrier element is usually coated continuously with abrasive.
  • the individual sections of the known grinding tool must be relatively thick, as a result of which they are no longer flexible and can no longer follow sharp curvatures of the carrier element during a revolution around deflection rollers with smaller radii, without breaking or detaching from the carrier element.
  • the disadvantages of conventional belt grinding machines described below also apply to the known grinding tool.
  • FR-A 1 316 082 describes a polishing machine in which the polishing agents consist of flexible polyurethane flakes in which abrasive grains are embedded. Such papers are attached under a wooden pressure shoe and can be pressed against a rotating porcelain plate for the purpose of polishing.
  • the polishing agent disclosed in FR-A 1 316 082 is nothing other than conventional polishing cloth, which is not suitable for use when sanding wooden profiles.
  • Wooden profiles e.g. B. furniture strips and other profiled furniture, are ground with grinding machines.
  • the grinding machines have rotating grinding tools or are designed as orbital grinding machines. Grinding machines with rotating grinding tools either work with rotating grinding wheels or with rotating endless grinding belts.
  • Rotating grinding wheels intended for grinding wooden profiles consist of a wheel body, in the peripheral surface of which the contour of the profile to be ground is molded. On the thus profiled peripheral surface is an abrasive, for. B. grinding lines, applied.
  • the service life of the abrasive depends on the size of the grinding wheel. The larger the disk circumference, the longer the service life can be achieved. However, there are limits to the wheel circumference and thus the service life, since the cutting speed becomes too high with the usual motor speed and larger grinding wheel diameter. Smaller grinding wheel diameters, as are also necessary when grinding relatively small radii of the wooden profiles, mean that the tool life is too short. Grinding with grinding wheels also has the disadvantage that a satisfactory grinding quality is not achieved due to the relatively small contact surface of the grinding wheel on the wooden profile to be ground.
  • belt sanders that work with an endlessly rotating sanding belt have a longer service life for the sanding belt.
  • the sanding quality is better than that of sanding disks and the wood profiles to be sanded can run through the belt sanding machines at a relatively high feed rate.
  • Belt grinders are therefore usually equipped with continuous workpiece transport.
  • Belt sanding machines for grinding profiled straight workpieces have an interchangeable pressure shoe provided with the contour of the profile to be sanded, as is also shown in FR-A 1 316 082, which is arranged between two deflection rollers for the sanding belt at approximately the same height .
  • the endless sanding belt consists of flexible fabric coated with sanding material and is relatively stiff for manufacturing reasons and because it also has to be tensioned and guided in the sanding machine.
  • an interchangeable deflection roller is designed as a pressure roller and provided on the circumference with the contour of the profile to be ground.
  • the workpiece to be ground just as is the case with the pressure shoe, press the tensioned and therefore quite stiff sanding belt into the contour of the deflection and pressure roller, which is only possible with profile shapes with large radii and low profile depth.
  • a belt grinder cannot grind profile contours that are both convex and concave in one operation. Due to guiding problems and the strength of the usual sanding belts, can More complicated profile shapes can be ground from a grinding machine only parts or sections of the profile contour. It is therefore common to use very long grinding machines with several grinding units arranged one behind the other, which can be pivoted up to 135 ° in a complex manner, in order to be able to grind the entire profile contour in one pass. The multiple grinding machines cause high investment costs and long set-up times.
  • a belt sanding disc with a profiled deflection and pressure roller offers a significant amount smaller contact surface, which corresponds approximately to the contact surface given with a grinding wheel.
  • the profiled deflection rollers are therefore kept as large as possible in diameter, since there are limits to the three-dimensional deformation of the grinding belt running over the deflection roller in the case of smaller diameters.
  • Grinding wooden profiles with rotating grinding wheels has the advantage over belt sanders that narrow radii can also be ground relatively true to the profile.
  • the service life of the grinding wheels is shorter than the service life of the belt grinding machines and the grinding quality that can be achieved with grinding wheels is worse, at least compared to belt grinding machines working with profiled pressure shoes.
  • the invention has for its object to provide a rotating grinding tool, in particular for a belt grinding machine, which, while avoiding the known grinding tools common disadvantages combines the advantages of a profiled grinding wheel and a rotating grinding belt.
  • each section is a stud made of elastic material, which has a foot region which can be connected to the carrier element and a head block arranged above it, in which the contour shape can be incorporated by material removal and coated with abrasive.
  • a complicated contour of the profile to be ground can also be easily incorporated into the relatively thick studs made of elastic material.
  • profiles with narrow radii can also be ground.
  • the grinding tool according to the invention has the advantage, however, that, as with conventional belt grinding machines with a grinding belt, long service lives and improved grinding quality can be achieved.
  • the grinding tool according to the invention can easily be used on existing belt grinding machines.
  • a profiled pressure shoe can be omitted. It is only a straight pressure element, e.g. B. a simple iron plate necessary to keep the profiled, band-shaped, endlessly rotating grinding tool in contact with the workpiece to be ground.
  • the pressure element can also be of any length, so that the given larger contact surface enables high grinding qualities.
  • abrasive for. B. grinding lines, glued firmly, so that complicated profiles can be ground in one operation with the highest profile accuracy, long service life and high grinding quality.
  • the resilient properties of the material for the contoured studs also have the advantage that it is possible to work with a relatively high abrasive pressure without the glued abrasive on the stud burning.
  • the grinding tool designed according to the innovation thus combines the advantages of a rotating grinding wheel with the advantages usual grinding belts in itself, without having to accept the disadvantages at the same time.
  • the arrangement of studs has the distribution that, for. B. when grinding welding: T! p n profiles, also a sharp deflection over pulleys with smaller diameters is possible without the relatively thick cleats higher loads, e.g. B. is exposed to stretching or stretching during the deflection because the joints between the individual studs can align radially to the deflection axis during the deflection.
  • a soft, thin, non-stretchable, endless flat belt which can be tensioned on the deflection and drive rollers of a conventional belt grinding machine, can be used as the support element for the studs.
  • the deflection rollers can thus have smooth outer surfaces.
  • the belt width can be selected according to the profile width to be sanded.
  • the rear drive surface of the flat belt can be coated with an abrasion-resistant and easy-to-slide coating, e.g. B. lines, be provided so that there is only a low frictional resistance to the profiled pressure shoe replacing a conventional belt grinder pressure plate.
  • the flat belt can be made of any suitable material, such as. B. made of rubber, plastic, textile material, leather or the like.
  • Each stud is preferably made of rubber. Rubber can be easily produced with different elasticities, so that grinding tools according to the invention can also be provided with different elasticities, adapted to the desired grinding work, with regard to their intended use.
  • each stud can be easily connected to the flat belts.
  • each stud is connected to the working surface of the support element, e.g. B. a flat belt, glued.
  • the working surface of the flat belt can have a rubber coating that is sanded before the individual studs are glued on in order to achieve better bonding.
  • Each stud has a foot area that can be connected to the flat belt and a head block arranged above it, into which the contour shape can be incorporated by removing material.
  • the carrier element which is initially equipped with non-profiled studs, is driven and z. B. from a belt sander slowly so long as the profile glued with grinding lines until the desired contour of the profile has ground into the studs of the grinding tool.
  • the studs profiled in this way can then be glued with abrasive lines, which means that the grinding tool is ready for use in order to grind even the most complex profiles true to form and with the highest grinding quality.
  • each stud into a foot region that can be connected to the carrier element and a head block that has the contour of the profile to be ground has the advantage that deformations of the stud due to stretching and stretching stresses in the deflection region of the rotating grinding tool are essentially restricted to the foot region.
  • the head block is not deformed, so that the contour shape in the head block cannot be deformed, particularly when working on curved wooden profiles in which grinding is carried out directly in the deflection area, so that grinding work with the highest profile accuracy is possible.
  • This measure which enables deformations of a stud to extend solely onto the foot region connected to the flat belt, is further developed in that, based on a total height of the stud, the height of the foot region is less than the height of the head block.
  • Such training allows relatively deep contours to be formed in the head block.
  • the limitation of a stud deformation to the foot area can then, for. B. can be achieved in that the foot region is made of softer and thus more elastic rubber, while the head block consists of relatively hard, difficult to deform rubber. It is easily possible to manufacture components with areas of different elasticity.
  • each stud that only absorbs the deformations that occur, by a special shape of the foot area.
  • the foot area of the stud can be offset from the head block by stud recesses running transversely to its circumferential working movement. Such recesses reduce the material cross section in the foot area of each stud, which means that areas of thin material thickness in the foot area can deform more easily than thicker material areas of the head block having the contour.
  • a recess formed as a molded-in groove is made in each side flank of a stud, the flank of which is turned towards the foot region and is inclined to the outer lower edge of the foot region.
  • the special shape has the advantage, among other things, that the bonding is more permanent, since the actual adhesive joint due to the higher stretching capacity of the foot area, which is thinner due to the bevel.
  • the grinding tool is characterized in that the with the carrier element, for. B. the flat belt, connectable contact surface of the foot region of the stud has a recess.
  • This recess also contributes to the fact that deformations of the stud caused by the deflection are limited only to the foot area.
  • the recess has a circular cross-sectional shape, the radius of the circular arc being approximately equal to the radius of a deflection and pressure roller assigned to the carrier element in the working area.
  • deflection rollers or pressure rollers which have a relatively small diameter.
  • the recesses can also have a different shape. So it is z. B. also possible to provide a wedge-shaped shape.
  • the soft elasticity provided by the special shape of the foot area also has the advantage that the abrasive is prevented from burning during grinding.
  • a portion of a grinding tool is shown in perspective.
  • the grinding tool consists of a soft, thin, but not stretchable flat belt 1, which is endlessly closed in any length.
  • the upper side opposite the drive surface 2 of the flat belt is coated with a rubber coating 3.
  • studs 4 made of rubber are glued, which are shaped in such a way that they have a block-shaped head block 5 and a foot area 6.
  • the foot area 6 is offset from the head block by grooves 7 and 8 molded into each side flank of each stud .
  • the flanks 9 and 10 of each groove facing the foot areas are, as shown, beveled and led to the outer lower edge of the foot area.
  • the contact surface of the stud which can be connected to the flat belt 1 has a recess 11 which here has an arcuate cross-sectional shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (9)

1. Bande abrasive pour une machine à polir des profilés avec un élément porteur sur la face de travail duquel sont fixés des éléments pour polir qui sont disposés et répartis pratiquement uniformément sur la longueur de l'élément porteur et dont l'épaisseur est multiple de l'épaisseur de l'élément porteur, chacun de ces éléments pour polir présentant sur sa face opposée à l'élément porteur un contour correspondant au profil à polir, caractérisée en ce que chaque élément pour polir est un patin (4) constitué en matière élastique qui présente une partie de base (6) pouvant être fixée à l'élément pour polir ainsi qu'un bloc de tête (5) disposé au-dessus dans lequel la forme profilée peut être établie par enlèvement de matière et peut recevoir une matière de polissage.
2. Bande abrasive selon la revendiction 1, caractérisée en ce que, sur la hauteur totale du patin (4), la hauteur de la partie de base (6) est plus faible que la hauteur du bloc de tête (5).
3. Bande abrasive selon la revendication 1 ou 2, caractérisée en ce que la partie de base (6) du patin (4) est diminuée par des enlèvements de matière du bloc de tête du patin qui s'étendent transversalement à son déplacement d'usinage en bande sans fin.
4. Bande abrasive selon la revendication 1, caractérisée en ce que chaque évidement est une gorge (8, 9) formée dans les flancs latéraux du patin (4) et le flanc (9, 10) de cette gorge situé du côté de la partie de base est incliné en s'étendant jusqu'au bord inférieur extérieur de la partie de base.
5. Bande abrasive selon l'une des revendications précédentes, caractérisée en ce que la face d'application de la partie de base (6) du patin (4) qui peut être fixée à l'élément porteur présente un évidement (11).
6. Bande abrasive selon la revendication 5, caractérisée en ce que l'évidement (11) présente des formes de coupes transversales en arcs de cercle dont le rayon est à peu près égal au rayon d'un rouleau de renvoi et d'appui (12) associé à l'élément porteur dans la zone de travail.
7. Bande abrasive selon la revendication 1, caractérisée en ce que l'élément porteur est une courroie plate (1) sans fin souple, mince, non extensible.
8. Bande abrasive selon la revendication 1, caractérisée en ce que la matière élastique est de caoutchouc.
9. Bande abrasive selon les revendications 1, 7 et 8, caractérisée en ce que chaque patin (4) est collé à la surface de travail de la courroie plate (1).
EP84103057A 1983-03-23 1984-03-20 Bande abrasive Expired EP0119632B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103057T ATE33357T1 (de) 1983-03-23 1984-03-20 Umlaufendes schleifwerkzeug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3310514 1983-03-23
DE3310514A DE3310514A1 (de) 1983-03-23 1983-03-23 Umlaufende schleifwerkzeug

Publications (3)

Publication Number Publication Date
EP0119632A2 EP0119632A2 (fr) 1984-09-26
EP0119632A3 EP0119632A3 (en) 1986-02-12
EP0119632B1 true EP0119632B1 (fr) 1988-04-06

Family

ID=6194393

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103057A Expired EP0119632B1 (fr) 1983-03-23 1984-03-20 Bande abrasive

Country Status (6)

Country Link
US (1) US4571893A (fr)
EP (1) EP0119632B1 (fr)
AT (1) ATE33357T1 (fr)
CA (1) CA1236977A (fr)
DE (2) DE3310514A1 (fr)
ES (1) ES286550Y (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3605855A1 (de) * 1986-02-22 1987-08-27 Arminius Gmbh Schleifmittel Schleifwerkzeug fuer profilleisten aus holz o.dgl.
US4744180A (en) * 1986-08-20 1988-05-17 Theodore Voorhees Sanding wheel
DE3742038A1 (de) * 1987-12-11 1989-06-22 Gerd Braasch Schleifkoerper fuer die bearbeitung von oberflaechen, insbesondere holzoberflaechen
US5341607A (en) * 1993-01-07 1994-08-30 Perneczky George C Method and apparatus for polishing hot strip mill run-out table rolls
US5377453A (en) * 1993-02-12 1995-01-03 Perneczky; George C. Automated method and apparatus for polishing hot strip mill run-out table rolls
GB2305876A (en) * 1995-10-04 1997-04-23 Black & Decker Inc Detail sanding platen having detachable portion adjacent pointed tip for replacement when worn
IT1282487B1 (it) * 1995-11-08 1998-03-23 Benetti Meyers International S Cinghietta diamantata per il taglio di pietre.
US6019666A (en) * 1997-05-09 2000-02-01 Rodel Holdings Inc. Mosaic polishing pads and methods relating thereto
DK1215010T3 (da) * 2000-12-16 2005-03-29 Mb Maschb Gmbh Slibeapparat
AU2008338303A1 (en) * 2007-12-18 2009-06-25 Alcoa Inc. Apparatus and method for grinding work rollers
WO2009114630A2 (fr) * 2008-03-11 2009-09-17 Voorwood Company Meule à lamelles abrasives à profils personnalisés
BE1019003A3 (fr) * 2009-11-19 2011-12-06 Pmds Sa Nv Chaine de haveuse et haveuse.
EP2537633B1 (fr) * 2011-06-24 2014-05-07 Comadur S.A. Système d'usinage d'un biseau
CN102366919B (zh) * 2011-09-21 2015-01-07 杭州祥生砂光机制造有限公司 一圈两磨倒角去毛刺机及去毛刺方法
CN113199362A (zh) * 2021-04-07 2021-08-03 安徽金路车辆制造有限公司 汽车金属配件表面处理装置
USD1125968S1 (en) * 2022-10-12 2026-05-12 Tandy Leather Factory, Inc. Sharpening plate

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925942A (en) * 1909-06-22 Sandpapering and polishing machine
BE543644A (fr) *
US1470740A (en) * 1922-01-23 1923-10-16 Titus S Hose Polishing wheel
US1570177A (en) * 1923-01-29 1926-01-19 James B Pointer Sanding block
US2001911A (en) * 1932-04-21 1935-05-21 Carborundum Co Abrasive articles
US1937953A (en) * 1932-09-30 1933-12-05 James A George Roll-dressing apparatus
US2067089A (en) * 1934-05-22 1937-01-05 Carborundum Co Yieldably mounted abrasive elements
US1999418A (en) * 1934-10-16 1935-04-30 John S Mcwhirter Wheel refinisher
US2069900A (en) * 1934-10-25 1937-02-09 Henry J Perazzoli Grinding device
US2137305A (en) * 1935-10-01 1938-11-22 Henry J Perazzoli Grinding equipment
US2170643A (en) * 1937-09-20 1939-08-22 Motor Products Corp Rubbing machine
US2214515A (en) * 1939-05-24 1940-09-10 E E Walker Sanding block
US2770928A (en) * 1951-06-15 1956-11-20 Carborundum Co Abrasive article
FR1316082A (fr) * 1962-02-12 1963-01-25 Service Eng Ltd Polisseuse d'articles en céramique utilisant des grains abrasifs enrobés dans la mousse de polyuréthane
US3410032A (en) * 1965-10-21 1968-11-12 Wesley C. Meinerding Abrasive belt mechanism
US3699727A (en) * 1971-04-30 1972-10-24 Minnesota Mining & Mfg Abrasive article and method of fabrication
SU516517A1 (ru) * 1974-05-21 1976-06-05 Предприятие П/Я Р-6378 Шлифовальна лента
SU704740A1 (ru) * 1977-08-09 1979-12-25 Ордена Трудового Красного Знамени Институт Сверхтвердых Материалов Ан Украинской Сср Способ обработки зубчатых колес

Also Published As

Publication number Publication date
DE3470291D1 (en) 1988-05-11
EP0119632A3 (en) 1986-02-12
CA1236977A (fr) 1988-05-24
ES286550Y (es) 1986-10-01
ATE33357T1 (de) 1988-04-15
EP0119632A2 (fr) 1984-09-26
ES286550U (es) 1986-03-16
DE3310514A1 (de) 1984-09-27
US4571893A (en) 1986-02-25

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