EP0315859A2 - Meule à lamelles pour meuleuse portative - Google Patents

Meule à lamelles pour meuleuse portative Download PDF

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Publication number
EP0315859A2
EP0315859A2 EP88118093A EP88118093A EP0315859A2 EP 0315859 A2 EP0315859 A2 EP 0315859A2 EP 88118093 A EP88118093 A EP 88118093A EP 88118093 A EP88118093 A EP 88118093A EP 0315859 A2 EP0315859 A2 EP 0315859A2
Authority
EP
European Patent Office
Prior art keywords
flap
grinding
clamping surface
outer region
circular
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.)
Withdrawn
Application number
EP88118093A
Other languages
German (de)
English (en)
Other versions
EP0315859A3 (fr
Inventor
Manfred Kausch
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.)
BRUNO SCHMITZ KG
Original Assignee
BRUNO SCHMITZ 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 BRUNO SCHMITZ KG filed Critical BRUNO SCHMITZ KG
Publication of EP0315859A2 publication Critical patent/EP0315859A2/fr
Publication of EP0315859A3 publication Critical patent/EP0315859A3/fr
Withdrawn legal-status Critical Current

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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
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face

Definitions

  • the invention relates to a flap wheel for hand-held grinding machines, consisting of a rigid, circular support disc, which is glued in a circular outer area with slim circular sector-shaped, fan-like overlapping sandpaper, abrasive cloth lamellas or the like, and which has a central clamping hole and a clamping surface surrounding the hole having.
  • Flap discs of the type mentioned at the outset are used to a large extent in industry, trade and also by do-it-yourselfers for surface treatment. With them, the working surface forms a circular ring which is formed by the ends of the grinding flaps, which are arranged to overlap one another.
  • Sandpaper, abrasive cloth, as well as carrier foils coated with abrasive, polishing or emery agents can be used for the sector-shaped abrasive flaps.
  • the fan-like lamellar arrangement is done counterclockwise for right-handed hand grinders.
  • the working surface forms a flat circular ring, that is to say a plane which runs at right angles to the axis of rotation.
  • a flat circular surface on the workpiece surface cannot be reliably guided with full surface contact by hand, so it is common to hold the hand grinder at an angle to the workpiece surface in such a way that the circular work surface only has a part of its circumference with the workpiece surface Touch comes.
  • Such a surface grinding body becomes unusable if the outer edge of the grinding flaps is worn down to the base of the supporting disk. In this condition, however, the interior is largely unused due to grinding lamellae. Attempts to wear this area also fail because the remaining work surface in turn approaches the flat surface on the workpiece surface and can then no longer be guided by hand due to the grinding reactions.
  • Another disadvantage of the known flap wheel abrasive is that the oblique attachment often leaves undesired grinding marks on the workpiece surface, at least with a new flap wheel, because at the beginning of the grinding work, i.e. with a new, unused flap wheel, there is first a line contact between the workpiece surface and the work surface , which only gradually converts into surface contact due to wear of the edge areas of the grinding flaps.
  • the invention has for its object to design a flap wheel of the type mentioned in such a way that the initial line contact is avoided and the conditions for complete wear and tear of the grinding flaps are created.
  • the flap wheel mentioned at the outset features according to the invention characterized in that the outer area is inclined backwards from the inside to the outside relative to the clamping surface on the working side, the rotational body formed by the outer area having a geometrical extension to the front having a apex lying on the axis of rotation at a distance in front of the clamping surface.
  • the outer area which is the carrier of the grinding flaps, is inclined relative to the plane of the clamping surface, an adaptation to the usual angular position of the hand-held grinding machine is created, and the working surface of the grinding flaps can be designed with the entire radial width of its ring shape from the start Surface of the workpiece are brought into contact. This initially prevents the grinding marks that have previously occurred with new flap discs.
  • the outer region has a rectilinear sheath-producing and geometrically has the figure of a flat cone section
  • This configuration has the advantage that it can be used to process flat surfaces particularly advantageously.
  • the outer region has an arcuate shell-generating and is geometrically shaped in the manner of a convex section of a rotational parabiloid, hyperboloid or the like.
  • annular transition zone is formed between the clamping surface and the outer region which is steeper than the latter and is inclined in the opposite direction to it.
  • This configuration is particularly advantageous because it helps to keep the axial length of the clamped flap body small.
  • the surface inclined to the clamping plane is displaced axially in the direction of the working surface, and it is achieved that the outer edge at its lowest point does not protrude beyond the rear of the clamping surface of the supporting disc in the direction of clamping the hand grinder. For the Handling this training is of particular advantage.
  • the support plate can be formed from sheet metal.
  • the support disk can also be designed as a molded plastic part.
  • the use of plastic for the support disk is common. Plastic also allows inexpensive production in large quantities.
  • a flap disc 1 which consists of a support disc 2, which is glued in an annular outer region 3 with grinding flaps 4, which form an annular working surface 5.
  • the grinding lamellae 4 - not shown in the drawings - have a narrow circular sector shape and are arranged in a fan-like manner overlapping one another.
  • the support disk For attachment to a hand-held grinding machine, not shown, the support disk has a central hole 6 and an annular, flat clamping surface 7 surrounding the hole 6.
  • the outer region 3 is designed to be inclined with respect to the clamping surface 7, so that it can be viewed geometrically as a conical jacket section of a flat circular cone, the apex 8 of which is at a distance from the clamping surface 7 in the working direction on the separating axis 9 .
  • the jacket generating line is a straight line.
  • transition zone 10 which is steeper than the outer region 3 and is inclined in the opposite direction to the latter. This measure ensures that the back of the outer region 3 does not protrude rearward over the clamping surface 7.
  • FIG. 3 shows an alternative configuration of the flap grinding body 1, which differs from the illustration according to FIG. 1 in that the outer region 3 does not have a straight jacket-generating member, but rather has an arcuate line as the jacket-generating member. Geometrically, this surface would form the section of a rotating body in the manner of a rotating paraboloid, hyperboloid or the like. The convex side of this rotating body is arranged in the direction of the work surface 5.
  • the work surface 5 also forms an arc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP19880118093 1987-11-12 1988-10-31 Meule à lamelles pour meuleuse portative Withdrawn EP0315859A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8715046U 1987-11-12
DE8715046U DE8715046U1 (de) 1987-11-12 1987-11-12 Fächerschleifer für Handschleifmaschinen

Publications (2)

Publication Number Publication Date
EP0315859A2 true EP0315859A2 (fr) 1989-05-17
EP0315859A3 EP0315859A3 (fr) 1990-10-10

Family

ID=6814034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880118093 Withdrawn EP0315859A3 (fr) 1987-11-12 1988-10-31 Meule à lamelles pour meuleuse portative

Country Status (2)

Country Link
EP (1) EP0315859A3 (fr)
DE (1) DE8715046U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543597A1 (de) * 1995-11-23 1997-05-28 Bruno Schmitz Schleifmittelwer Fächerschleifer
CN108527181A (zh) * 2018-06-04 2018-09-14 东莞市福鑫磨料磨具有限公司 一种基体凹陷安装的砂布轮以及循环使用基体的砂布轮

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616872A1 (fr) * 1993-02-19 1994-09-28 Hirokazu Ichiguchi Meule

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907147A (en) * 1957-12-23 1959-10-06 F L & J C Codman Company Radial face rotary buffing element
DE8806119U1 (de) * 1988-05-09 1988-06-23 Wendt, Günther, 5227 Windeck Fächerstirnschleifscheibe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543597A1 (de) * 1995-11-23 1997-05-28 Bruno Schmitz Schleifmittelwer Fächerschleifer
CN108527181A (zh) * 2018-06-04 2018-09-14 东莞市福鑫磨料磨具有限公司 一种基体凹陷安装的砂布轮以及循环使用基体的砂布轮

Also Published As

Publication number Publication date
EP0315859A3 (fr) 1990-10-10
DE8715046U1 (de) 1988-01-07

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