NZ777496B2 - Grinding disc and use of such a grinding disc - Google Patents

Grinding disc and use of such a grinding disc

Info

Publication number
NZ777496B2
NZ777496B2 NZ777496A NZ77749619A NZ777496B2 NZ 777496 B2 NZ777496 B2 NZ 777496B2 NZ 777496 A NZ777496 A NZ 777496A NZ 77749619 A NZ77749619 A NZ 77749619A NZ 777496 B2 NZ777496 B2 NZ 777496B2
Authority
NZ
New Zealand
Prior art keywords
grinding disc
fabric
grinding
disc according
reinforcing
Prior art date
Application number
NZ777496A
Other versions
NZ777496A (en
Inventor
Stefan Gehrmann
Frank Henn
Achim Schmitz
Fabian Schumacher
Original Assignee
August Rüggeberg Gmbh & Co Kg
Filing date
Publication date
Application filed by August Rüggeberg Gmbh & Co Kg filed Critical August Rüggeberg Gmbh & Co Kg
Priority claimed from PCT/EP2019/050836 external-priority patent/WO2020147922A1/en
Publication of NZ777496A publication Critical patent/NZ777496A/en
Publication of NZ777496B2 publication Critical patent/NZ777496B2/en

Links

Classifications

    • 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
    • B24D5/02—Wheels in one piece
    • B24D5/04—Wheels in one piece with reinforcing means
    • 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
    • B24D7/02—Wheels in one piece
    • B24D7/04—Wheels in one piece with reinforcing means

Abstract

grinding disc comprises a grinding layer formed of grinding grains bound by means of a binding agent. Reinforcing fabrics are embedded in the grinding layer on the outer sides of the grinding layer. At least one additional fabric is arranged on at least one of the reinforcing fabrics and has a respective diameter which is smaller than the diameter of the reinforcing fabrics. The at least one additional fabric stiffens the grinding disc in a region around a central opening and improves the properties of the grinding disc during rough machining and/or cutting off.

Claims (15)

Patent Claims
1. Grinding disc comprising - a grinding layer, 5 -- which is formed of grinding grains bound by means of a binding agent, -- which has a grinding layer diameter D -- which forms a first outer side and a second outer side, - a first reinforcing fabric, 10 -- which is embedded in the grinding layer on the first outer side, -- which has a first fabric diameter D , wherein: D = 0.8 · D , A1 A1 S - a second reinforcing fabric, -- which is embedded in the grinding layer on the second outer side, 15 -- which has a second fabric diameter D , wherein: D = 0.8 · A2 A2 characterized in that at least one fabric is arranged on at least one of the reinforcing fabrics, and 20 in that the at least one fabric has a respective diameter D , wherein: D < D and D < D . A1 i A2
2. Grinding disc according to claim 1, characterized in that the grinding layer between the reinforcing fabrics is free of 25 reinforcing fabrics.
3. Grinding disc according to claim 1 or 2, characterized in that the at least one fabric is arranged relative to the at least one reinforcing fabric on a side facing away from the grinding layer.
4. Grinding disc according to any one of claims 1 to 3, characterized 5 in that at least one fabric is arranged on the first reinforcing fabric and at least one fabric is arranged on the second reinforcing fabric.
5. Grinding disc according to any one of claims 1 to 4, characterized in that a plurality of fabrics are arranged on at least one of the 10 reinforcing fabrics.
6. Grinding disc according to any one of claims 1 to 5, characterized in that the following applies for the respective diameter D : 0.25·D = D = 0.75·D , in particular 0.3·D = D = 0.7·D , and in S i S S i S 15 particular 0.35·D = D = 0.65·D . S i S
7. Grinding disc according to any one of claims 1 to 6, characterized in that the at least one fabric is arranged in a clamping region and/or outside an outer working region, which is usable for cutting off, and/or 20 in an inner working region, which is usable for rough machining, of the grinding disc.
8. Grinding disc according to any one of claims 1 to 7, characterized in that the at least one fabric delimits a reinforced region of the 25 grinding disc with a thickness d and an unreinforced region of the grinding disc with a thickness d , wherein the following applies: 0.95 = d /d = 1.05, in particular 0.99 = d /d = 1.01, and in particular 0.995 = 1 2 1 2 d /d = 1.005.
9. Grinding disc according to any one of claims 1 to 8, characterized by a thickness d, wherein the following applies: 2 mm = d = 7 mm, in particular 3 mm = d = 6 mm, and in particular 4 mm = d = 5 mm. 5
10. Grinding disc according to any one of claims 1 to 8, characterized by a thickness d, wherein the following applies: 0.8 mm = d = 4 mm, in particular 1.2 mm = d = 3.2 mm, and in particular 1.6 mm = d = 2.5
11. Grinding disc according to any one of claims 1 to 10, characterized in that the at least one fabric which is assigned to one of the reinforcing fabrics has, in total, a respective weight per unit area G , wherein the following applies: 50 g/m = G = 500 g/m , in particular 2 2 2 2 15 75 g/m = G = 450 g/m , and in particular 100 g/m = G = 400 g/m .
12. Grinding disc according to any one of claims 1 to 11, characterized in that the at least one fabric has a respective thread width b , wherein 20 the following applies: 0.1 mm = b = 1.8 mm, in particular 0.3 mm = b = 1.5 mm, and in particular 1 mm = b = 1.2 mm.
13. Grinding disc according to any one of claims 1 to 12, characterized 25 in that the at least one fabric has a respective value R , wherein the following applies: 0.2 = R = 1.2, in particular 0.3 = R = 1.
14. Grinding disc according any one of claims 1 to 13, characterized, by a clamping ring for clamping the grinding disc on a grinding machine.
15. Use of the grinding disc according to any one of claims 1 to 14 for 5 rough machining and/or for cutting off, wherein a cutting speed is at least 80 m/s, in particular at least 90 m/s, and in particular at least 100 m/s. 6 5 W 10 W 6 5 3 4 W M 9 W G 1 2 1 2 1 d d d v 8 7 W W W W G 8 7 3 4 3 4 2 16 15 15 16 14 13 13 14 12 11 12
NZ777496A 2019-01-14 Grinding disc and use of such a grinding disc NZ777496B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2019/050836 WO2020147922A1 (en) 2019-01-14 2019-01-14 Grinding disc and use of such a grinding disc

Publications (2)

Publication Number Publication Date
NZ777496A NZ777496A (en) 2024-01-26
NZ777496B2 true NZ777496B2 (en) 2024-04-30

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