WO1997037814A1 - Outil a meuler et polir, element meulant, et procede de production d'elements de meule pour un tel outil - Google Patents

Outil a meuler et polir, element meulant, et procede de production d'elements de meule pour un tel outil Download PDF

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Publication number
WO1997037814A1
WO1997037814A1 PCT/SE1996/001504 SE9601504W WO9737814A1 WO 1997037814 A1 WO1997037814 A1 WO 1997037814A1 SE 9601504 W SE9601504 W SE 9601504W WO 9737814 A1 WO9737814 A1 WO 9737814A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
carrier
connection
tool
grinding member
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.)
Ceased
Application number
PCT/SE1996/001504
Other languages
English (en)
Inventor
Karl Olof Lidin
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.)
ALLROUNDFINISHER KB
Original Assignee
ALLROUNDFINISHER KB
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
Priority claimed from SE9601328A external-priority patent/SE506706C2/sv
Application filed by ALLROUNDFINISHER KB filed Critical ALLROUNDFINISHER KB
Priority to AU76611/96A priority Critical patent/AU7661196A/en
Publication of WO1997037814A1 publication Critical patent/WO1997037814A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings

Definitions

  • the present invention relates to a tool for grinding and polishing objects of varying geometric shape, which comprises a carrier having a member for connection to a driving unit imparting a movement thereto and a grinding member provided with a grinding surface and adapted to be interchangeably connected to the carrier through connection means at least partially outside thereof for changing between different grinding members.
  • the invention also relates to grinding members for this type of tools as well as a method for produc ⁇ ing such grinding members according to the preambles of the claims directed thereto.
  • Tools of this type are primarily useful for workmen and others working with works of art and designs having irregular surfaces, where it is difficult to reach and polish in all spaces and on all surfaces by con- ventional tools and accessories.
  • a desired result is not obtained by the most common tool accessories in the form of rasps, cutting edges of high-speed steel, grinding pins having ceramic surfaces, etc, should the object be to achieve fine-polished surfaces, since the grinding members of these tool accessories are too hard.
  • Another disadvantage of such conventional tools is that they are difficult to control depending upon the fact that the hard grinding members may "throw" the tool, thus resulting in extensive damage of the tool exerted to polishing.
  • connection means has a connection action between the carrier and the grinding member only at the extremity of the latter, which means that the grinding member has a tendency to not perfectly follow the carrying member along the length thereof in all grinding and polishing situations, which may both influence the result obtained negatively and cause a premature de ⁇ struction of the grinding surface of the grinding member.
  • the main object of the present invention is to provide a tool of the type defined in the introduction, which finds remedy for the inconveniences mentioned above of the American patent referred to above.
  • connection means is adapted to establish a connection between the carrier and the grinding member along more than half the length of the carrier. Thanks to the provision of the tool with such a connection means the carrier and the grinding member arranged thereon will act as if they were one single continuous body, which will especially in grinding and polishing surfaces against which the grinding member is pressed by a certain force lead to a maintained good machining result without any risk for harmful loads directed obliquely on the grinding member or premature destruction of the grinding surface of the grinding member as a consequence of folding or the like, which was a risk for the tool according to the American patent mentioned above.
  • connection means is adapted to establish a connection between the carrier and the grinding member along more than 65% of the length of the carrier.
  • connection means is adapted to establish a connection by threads, the thread runs externally of the carrier and has a pitch between two consecutive turns of the thread exceeding 0.7 times the radius of the carrier. Thanks to the utilization of the connection by threads with such a large pitch it is possible to obtain a quick connection for quickly and comfortably changing grinding members should a grinding member have been worn out or should there be a desire to change to a grinding member having another outer shape, at the same time as the good stability of the tool may be ensured thanks to the long connection between the carrier and the grinding member in the longitudinal direction of the carrier, since most often only a few turns of the thread are needed so as to obtain the connection required.
  • said pitch exceeds the radius of the carrier, which has turned out to be very advantageous from the quick-changing point of view.
  • the carrier is substantially cone-shaped, and the grinding member has a recess being correspondingly cone-shaped and adapted to receive the carrier upon establishing a connection therebetween.
  • the grinding member has a recess being correspondingly cone-shaped and adapted to receive the carrier upon establishing a connection therebetween.
  • the grind ⁇ ing member has a cone-shaped outer shape provided with the grinding surface.
  • Such a cone-shaped grinding surface makes it possible to ef ⁇ ficiently reach into spaces which are difficult to machine by conven- tional tools and it may advantageous also be used for grinding and polishing flat surfaces.
  • Another object of the present invention is to provide a grinding mem ⁇ ber being particularly well suited to reach and obtain grinding and polishing of surfaces being difficult to reach in any particular shape of an object to be ground.
  • This object is according to the invention obtained by providing such a grinding member with a ball-shaped outer shape provided with the grinding surface.
  • a grinding member so designed makes it possible to get access inside all types of round, i.e. concave surfaces, such as for example when grinding and polishing a bowl.
  • the object is also obtained by providing such a grinding member with a cylindrical outer shape provided with the grinding surface.
  • a cylindrical grinding member is well suited for grinding and polishing inside cavities having substantially straight walls in different types of objects.
  • this is made of a compressible material for making a con ⁇ tact by the grinding surface thereof to convex surfaces to be ground upon pressing the outer surface of the grinding member thereagainst.
  • a compressible material for making a con ⁇ tact by the grinding surface thereof to convex surfaces to be ground upon pressing the outer surface of the grinding member thereagainst.
  • a third object of the present invention is to provide a method for producing a grinding member for a tool for grinding and polishing, which is simple and results in a high quality product being fine-grained to an optional extent.
  • This object is according to the invention obtained by providing a method, in which a body having an external surface of plastic material is coated by a glue and alumina being fine-grained to a desired extent.
  • a grinding member may in this way be obtained by the direct coating of a body by a glue, in which fine-grainedness of the grinding surface so obtained may be chosen by choosing the fine-grainedness of the alumina.
  • Fig. 1 is a perspective view of a carrier of a tool according to the invention
  • Fig. 2 is a perspective view of a grinding member of a tool accor ⁇ ding to the invention
  • FIG. 3 illustrates in perspective how the grinding member accor- ding to Fig. 2 is intended to be applied on the carrier ac ⁇ cording to Fig. 1
  • FIG. 4 illustrates a tool provided with a grinding member according to a second preferred embodiment of the invention in func ⁇ tion
  • Fig. 5 illustrates a tool provided with a grinding member according to a third preferred embodiment of the invention in function
  • Fig. 6 illustrates a tool provided with a grinding member according to a fourth preferred embodiment of the invention in func ⁇ tion.
  • Fig. 1 shows in perspective a carrier 1 in the form of a substantially cone-shaped body, which is intended to carry a grinding member outside thereof, said member being illustrated further below.
  • a carrier 1 in the form of a substantially cone-shaped body, which is intended to carry a grinding member outside thereof, said member being illustrated further below.
  • at least the outer walls of the carrier are made of a compres ⁇ sible material, such as rubber.
  • the whole carrier is made of rubber.
  • the carrier 1 has a thread groove 2 running therea- round and having a large pitch, and a large pitch means that the distance between two consecutive turns of the thread exceeds 0.7 times the radius of the carrier, in which the radius of the carrier at the base end thereof, i.e. that end at which the groove starts, is intended. In the case shown in Fig. 1 said pitch exceeds the radius of the carrier at said base end.
  • the groove 2 extends over about two thirds of the length of the carrier, in which the length of the carrier is defined as the distance between the two ends thereof seen in the direction of the thread pitch. Thanks to the large pitch only a few turns of the thread are needed for making the thread extend over a substantial part of the length of the carrier, so that it will in this way be possible to combine the possibility to a quick change of a grinding member received on the carrier and a good stability and fixing of a grinding member received on the carrier.
  • the carrier is also provided with a member, in the form of a pin 3, for connection to a driving unit imparting a movement thereto, such as securing in for example a chuck of a drilling machine, for carrying out a grinding or polishing by means of the tool.
  • the pin 3 may of course also be secured to other driving units.
  • a grinding member 4 with the shape of a hollow cone is illustrated in Fig. 2, the cavity of which cone having a shape corresponding to the carrier 1 for receiving the carrier therein.
  • the grinding member 4 is provided with an external grinding surface 5, in which this may be formed by gluing a conventional grinding fabric on the very cone, which preferably is made of plastic material and most preferred of urethane plastic.
  • a grinding member body having an external surface of plastic material, preferably of urethane plastic has however been coated by a glue and alumina being fine-grained to a desired extent.
  • the glue is then first applied, preferably by painting or spraying, onto the external surface and the alumina is then applied, preferably by blowing or rolling it thereon.
  • the cone-shaped grinding member 4 has an internal thread 6 in the form of a ridge running therearound, which is adapted to enter into engagement with the thread groove 2 of the carrier in screwing the grinding member 4 onto the carrier 1 .
  • a change of grinding member 4 on the carrier 1 may be carried out in a quick and efficient way, in which this change may be carried out so as to exchange a grinding member worn out by a new one or a grinding member by another grinding member being fine-grained to another extent or having an outer shape adapted for grinding of other surfaces.
  • the carrier 1 When grinding or polishing is carried out the carrier 1 is preferably rotated in such a direction that the reaction forces received by the grinding member from the surface being ground tend to tighten this harder to the carrier.
  • the operator may in grinding have a set of different grinding members and by a workshop wrinkle quickly change them for another.
  • the cone- shaped design of the grinding member shown in Fig. 2 and 3 means that an efficient grinding may be carried out on flat surfaces and in spaces where conventional grinding tools have difficulties to obtain a good result and other shapes of the grinding member advantageous for particular applications will hereinafter be discussed with reference to Fig. 4 to 6. All of these grinding members may be used on one and the same carrier.
  • a grinding member 7 having the same inner cone shape as the grinding member according to Fig. 2 and 3, but with a ball shape 9 at one end thereof and provided with a grinding surface 8.
  • This ball shape makes the grinding member suited for grinding of for instance the internal side of a bowl 10.
  • a grinding member according to a third preferred embodiment of the invention is illustrated in Fig. 5, in which this grinding member 11 internally corresponds to the two other grinding members described above, but it has an outer cylindrical shape provided with the grinding surface 12.
  • Such a grinding member is well suited for grinding an object having straight walls, such as the inner side of a straight bowl 13, such as shown in Fig. 5.
  • the grinding member may for such a use be formed by a comparatively rigid material, preferably a rigid plastic material.
  • a grinding member 14 according to a fourth preferred embodiment of the invention is illustrated in Fig. 6, which corresponds to the grinding member according to Fig. 5 except for the fact that it is manufactured by a compressible material for contacting the grinding surface 15 thereof to convex or curved surfaces 16 to be ground when pressing the outer surface of the grinding member thereagainst.
  • the outer side of the bowl 17 may in this way be efficiently ground. Grinding has mainly been discussed above, but the tool according to the invention may just as well be used for polishing, and the definition of "grinding member" is to be interpreted as a member being used for grinding or polishing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

La présente invention concerne un outil à meuler et polir des objets de différentes formes géométriques. Cet outil, qui est constitué d'un support (1) équipé d'un organe de couplage (3) à une unité motrice entraînant le support, est également constitué d'un élément meulant (4) à surface meulante (5) conçu pour pouvoir se monter et se démonter du support (5) au moyen d'organes de raccordement (2, 6) disposés au moins en partie extérieurement par rapport l'élément meulant de façon à faciliter la dépose et le remontage des éléments meulants. Un tel organe de raccordement est conçu pour permettre le raccordement du support (1) avec l'élément meulant (4) sur plus de la moitié de la longueur du support.
PCT/SE1996/001504 1996-04-09 1996-11-20 Outil a meuler et polir, element meulant, et procede de production d'elements de meule pour un tel outil Ceased WO1997037814A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU76611/96A AU7661196A (en) 1996-04-09 1996-11-20 Tool for grinding and polishing objects as well as grinding member and method for producing grinding members for such tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9601328A SE506706C2 (sv) 1995-05-26 1996-04-09 Verktyg för slipning och putsning av konstverk och figurer med varierande geometrisk utformning, med snabbförbindning mellan sliporgan och bärare
SE9601328-9 1996-04-09

Publications (1)

Publication Number Publication Date
WO1997037814A1 true WO1997037814A1 (fr) 1997-10-16

Family

ID=20402112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1996/001504 Ceased WO1997037814A1 (fr) 1996-04-09 1996-11-20 Outil a meuler et polir, element meulant, et procede de production d'elements de meule pour un tel outil

Country Status (2)

Country Link
AU (1) AU7661196A (fr)
WO (1) WO1997037814A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101565A1 (fr) * 1999-11-15 2001-05-23 Wilfried Schneider Dispositif d'usinage pour surfaces planes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739028A (en) * 1902-07-15 1903-09-15 J B Ferguson Abrading-tool.
US2826014A (en) * 1955-05-27 1958-03-11 Field Albert Abrasive tool
DE1729696A1 (de) * 1965-08-18 1969-10-02 Jarby Dr Sven Schleif- und Polierkoerper fuer zahnaerztliche und zahntechnische Zwecke
US3928948A (en) * 1973-11-27 1975-12-30 Spector George Sanding cone
US4167083A (en) * 1974-06-07 1979-09-11 Lidkopings Mekaniska Verkstads Aktiebolag Grinding machine adapted for changing of grinding wheels on a grinding spindle
EP0120577A2 (fr) * 1983-03-01 1984-10-03 Burwell, Reed And Kinghorn Limited Machine à polir
AT376922B (de) * 1982-03-29 1985-01-25 Hoermann Cornelia Schleifwerkzeug
GB2284426A (en) * 1993-12-01 1995-06-07 Logitech Ltd Abrasive material
US5429545A (en) * 1993-08-30 1995-07-04 Meyer; Josephine R. Pad for wetcleaning porcelain greenware and method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739028A (en) * 1902-07-15 1903-09-15 J B Ferguson Abrading-tool.
US2826014A (en) * 1955-05-27 1958-03-11 Field Albert Abrasive tool
DE1729696A1 (de) * 1965-08-18 1969-10-02 Jarby Dr Sven Schleif- und Polierkoerper fuer zahnaerztliche und zahntechnische Zwecke
US3928948A (en) * 1973-11-27 1975-12-30 Spector George Sanding cone
US4167083A (en) * 1974-06-07 1979-09-11 Lidkopings Mekaniska Verkstads Aktiebolag Grinding machine adapted for changing of grinding wheels on a grinding spindle
AT376922B (de) * 1982-03-29 1985-01-25 Hoermann Cornelia Schleifwerkzeug
EP0120577A2 (fr) * 1983-03-01 1984-10-03 Burwell, Reed And Kinghorn Limited Machine à polir
US5429545A (en) * 1993-08-30 1995-07-04 Meyer; Josephine R. Pad for wetcleaning porcelain greenware and method
GB2284426A (en) * 1993-12-01 1995-06-07 Logitech Ltd Abrasive material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1101565A1 (fr) * 1999-11-15 2001-05-23 Wilfried Schneider Dispositif d'usinage pour surfaces planes

Also Published As

Publication number Publication date
AU7661196A (en) 1997-10-29

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