Flap wheel

• US 5,722,881 A
• Filed: 08/30/1996
• Issued: 03/03/1998
• Est. Priority Date: 08/30/1996
• Status: Expired due to Term

• Current Assignee: Saint-Gobain Abrasives Incorporated (Compagnie De Saint-Gobain S.A.)
• Original Assignee: Merit Abrasive Products, Inc. (Compagnie De Saint-Gobain S.A.)
• Inventors: Emerson, Grahame W.
• Primary Examiner(s): Morgan, Eileen P.
• Application Number:
  US08/706,438
• Time in Patent Office: 550 Days
• Field of Search: 451/464, 451/465, 451/466, 451/468, 451/469, 451/486, 451/358
• US Class Current: 451/466
• CPC Class Codes: B24D 13/04 comprising a plurality of flaps or strips arranged around the axis
• CPC Class Codes: B24D 13/16 comprising pleated flaps or strips

Abstract

An abrasive wheel is partially defined by a support member and by a plurality of abrasive flaps on such member. A hole is disposed centrally in the support member to receive a mandrel for rotating the wheel. The support member has at its radial periphery an annular surface with a constant radius at progressive positions in the annular direction. The flaps are fixedly supported (as by epoxy) on the annular surface in a partially overlapping relationship between successive pairs of flaps. Each of the flaps has abrasive particles on one of its surfaces. Each of the flaps is disposed on the annular surface of the support member with the abrasive particles facing outwardly from such support surface. Each of the flaps defines an acute angle with the annular surface and extends at its opposite axial ends beyond the axial positions of support by such support surface. However, the flaps are fixedly positioned relative to one another even at the axial positions beyond the opposite axial ends of the annular surface on the support member as a result of the support by the support member and the overlapping relationship between the flaps in the successive pairs. In this way, the abrasive wheel is able to provide a positive and forceful action on a workpiece surface along the full axial width of the flaps when the abrasive wheel is rotated against the workpiece surface.

Claims

1. An abrasive wheel for abrading a surface of a workpiece in accordance with a rotation of the wheel, including,

a substantially rigid rotary member,

first means extending radially from the rotary member and having an annular periphery at its outer radial end and having an annular rim at its outer radial periphery, the annular rim having a width extending axially beyond the first means to define opposite axial ends of the rim,

a plurality of flaps each having an inner end and an outer end and each extending along the width of the rim and each extending from the annular rim at an angle relative to the annular rim and each disposed at least partially on an adjacent one of the flaps in an overlapping relationship in the radial direction with such adjacent ones of the flaps before the rotation of the wheel,

the flaps being disposed around the complete periphery of the annular rim and being substantially parallel to one another in the overlapping relationship along the lengths of the flaps, and

second means for attaching the flaps to the annular rim at the inner ends of the flaps along the width of the rim to retain the flaps in a substantially fixed relationship to one another and to the annular rim, with each flap disposed at the angle relative to the annular rim and with each flap disposed on an adjacent one of the flaps, during the rotation of the abrasive wheel and the application of the wheel against the workpiece surface.

2. An abrasive wheel as set forth in claim 1 wherein

each of the flaps is disposed on the annular rim at an acute angle relative to the annular rim at the position at which it is attached to the annular rim.

3. An abrasive wheel as set forth in claim 1 wherein the flaps extend axially beyond the annular rim at the opposite axial ends of the annular rim and extend at the positions beyond the annular rim in a direction having a component extending radially outwardly from the annular rim.

4. An abrasive wheel as set forth in claim 1 wherein

the second means constitutes an epoxy attached to the inner ends of the abrasive flaps at the position at which the abrasive flaps abut the annular rim.

5. An abrasive wheel as set forth in claim 2 wherein

the periphery of the flaps extends axially beyond the annular rim at the opposite axial ends of the annular rim and wherein

the second means constitutes an epoxy attached to the inner ends of the abrasive flaps at the position at which the abrasive flaps abut the annular rim and wherein

the abrasive flaps extend at the positions beyond the annular rim in a direction having a component extending radially outwardly from the annular rim.

6. An abrasive wheel as set forth in claim 1, including,

the angle between each flap and the annular rim providing for a partially overlapping relationship between each flap and the adjacent flaps.

7. An abrasive wheel for abrading a surface of a workpiece, including,

a substantially rigid member having a looped configuration and having a first portion disposed in a radial plane and having an outer end and having a second portion extending axially from the first portion at the outer end of such radial plane,

a plurality of flaps having inner and outer ends and disposed on one another on the second portion of the member at their inner ends in a partially overlapping relationship to one another in the radial direction at positions between the inner and outer ends of the flaps, the flaps being disposed completely around the looped configuration of the member, adjacent ones of the flaps being disposed in a substantially parallel relationship to each other in the partially overlapping relationship along substantially the complete lengths of the flaps, and

means disposed on the flaps in abutting relationship to the member for retaining the inner ends of the flaps on the second portion of the member in the overlapping relationship during the rotation of the abrasive wheel and the application of the abrasive wheel against the surface of the workpiece.

8. An abrasive wheel as set forth in claim 7 wherein

the first portion of the member has opposite axial ends and wherein

the second portion of the member extends axially beyond the first portion of the member at the opposite axial ends of the first portion of the member and wherein

the flaps extend axially beyond the second portion of the member at the opposite axial ends of the second portion of the member in a direction having a component extending radially outwardly from the annular rim.

9. An abrasive wheel as set forth in claim 7 wherein

the retaining means constitutes an epoxy disposed on the flaps and the second portion of the member at the inner ends of the flaps and disposed relative to the second portion of the member for bonding the inner ends of the flaps to the second portion of the member.

10. An abrasive wheel as set forth in claim 7 wherein

the flaps extend with a directional component radially outwardly from the second portion of the member at an acute angle relative to the second portion of the member in the partially overlapping relationship of the flaps at the positions between the inner and outer ends of the flaps.

11. An abrasive wheel as set forth in claim 8 wherein

the retaining means constitutes an epoxy disposed on the flaps at the inner ends of the flaps and disposed relative to the second portion of the member for bonding the inner ends of the flaps to the second portion of the member and wherein

the flaps extend with a directional component radially outwardly from the second portion of the member at an acute angle relative to the second portion of the member in the partially overlapping relationship of the flaps in the radial direction at the positions between the inner and outer ends of the flaps.

12. An abrasive wheel as set forth in claim 10 wherein

the acute angle between the flaps and the second portion of the member provides a partially overlapping relationship in the radial direction between each flap and at least two (2) of the adjacent flaps in the plurality at the positions between the inner and outer ends of such flaps.

13. An abrasive wheel for abrading a surface of a workpiece in accordance with a rotation of the wheel, including,

a substantially rigid support plate extending in a radial direction and having an outer periphery and having an axially disposed substantially rigid rim at its outer periphery, the rim having an annular configuration,

a plurality of abrasive flaps having inner and outer ends and disposed on one another at their inner ends on the axially disposed rim in a partially overlapping relationship to one another in the radial direction before any rotation of the wheel, adjacent ones of the flaps being disposed in a substantially parallel relationship to each other in the overlapping relationship along substantially the complete lengths of the flaps, and

means for attaching the inner ends of the flaps to the radially disposed rim in the overlapping relationship of the abrasive flaps before any rotation of the wheel,

the flaps being disposed around the complete annular configuration of the rim.

14. An abrasive wheel as set forth in claim 13 wherein

the attaching means is an epoxy and

the support plate is metallic.

15. An abrasive wheel as set forth in claim 13 wherein

the abrasive flaps are disposed at an acute angle relative to the axially disposed rim and wherein the flaps are provided with abrasive particles on one of its surfaces and wherein the surface with the abrasive particles on each of the flaps faces outwardly from the axially disposed rim.

16. An abrasive wheel as set forth in claim 13 wherein

the support plate is provided with a centrally disposed hole to receive a mandrel for rotating the support plate, the abrasive flaps and the attaching means.

17. An abrasive wheel as set forth in claim 13 wherein

the abrasive flaps extend axially beyond the opposite axial ends of the axially disposed rim in a direction having a component extending radially outwardly from the annular rim and wherein the overlapping relationship of the flaps in the radial direction before any rotation of the wheel causes the disposition of the flaps to be rigid even at the axial positions of the flaps beyond the opposite axial ends of the axially disposed rim.

18. An abrasive wheel as set forth in claim 13 wherein

the inner ends of the plurality of the abrasive flaps are disposed on the axially disposed rim to provide an overlapping relationship in the radial direction between each flap and at least two (2) of the flaps contiguous to such flap before any rotation of the wheel.

19. An abrasive wheel as set forth in claim 17 wherein

the attaching means is an epoxy and

the support plate is metallic and wherein

the abrasive flaps are disposed at an acute angle in the radial direction relative to the axially disposed rim and wherein

the flaps are provided with abrasive particles on one of its surfaces and wherein

the surface with the abrasive particles on each of the flaps faces outwardly from the axially disposed rim and wherein

the support plate is provided with a centrally disposed hole to receive a mandrel for rotating the support plate, the abrasive flaps and the attaching means and wherein

the plurality of the abrasive flaps are disposed on the axially disposed rim to provide an overlapping relationship in the radial direction between each flap and at least two (2) of the flaps contiguous to such flap before any rotation of the wheel.

20. An abrasive wheel for abrading a surface of a workpiece in accordance with a rotation of the wheel, including,

a radially disposed substantially rigid support plate,

a substantially rigid fibrous member attached to the support plate and extending radially outwardly from the support plate and defining an axially extending substantially rigid rim at the radially outward end of the fibrous member, the rim having a closed configuration

a plurality of abrasive flaps having inner and outer ends and disposed at least partially on one another at their inner ends on the axially extending rim in an overlapping relationship to the adjacent flaps in the plurality before any rotation of the wheel, adjacent ones of the flaps being disposed in a substantially parallel relationship to each other in the overlapping relationship along substantially the complete lengths of the flaps, and

means for attaching the flaps to the axially extending rim at the inner ends of the flaps abutting the rim,

the flaps being disposed completely around the closed configuration of the rim.

21. An abrasive wheel as set forth in claim 20, including,

the plurality of the abrasive flaps being disposed on the axially extending rim to provide an overlapping relationship in the radial direction between each flap and at least two (2) of the flaps contiguous to such flap before any rotation of the wheel.

22. An abrasive wheel as set forth in claim 20,

the attaching means constituting first attaching means, and

second means for attaching the fibrous member to the support plate.

23. An abrasive wheel as set forth in claim 22,

the support plate being made from a metal, and

the first and second attaching means constituting an epoxy.

24. An abrasive wheel as set forth in claim 21, including,

the attaching means constituting first attaching means, and

second means for attaching the fibrous member to the support plate,

the support plate being made from a metal, and

the first and second attaching means constituting an epoxy.

25. An abrasive wheel as set forth in claim 24,

the abrasive flaps extending in the axial direction beyond the axial ends of the axially extending rim in a direction having a component extending radially outwardly from the rim and the overlapping relationship between the flaps before any rotation of the wheel providing for a rigid relationship between the flaps even at the axial positions of the flaps beyond the axial ends of the axially extending rims.