| (19) |
 |
|
(11) |
EP 0 397 993 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
13.01.1993 Bulletin 1993/02 |
| (43) |
Date of publication A2: |
|
22.11.1990 Bulletin 1990/47 |
| (22) |
Date of filing: 22.03.1990 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
19.05.1989 JP 126017/89
|
| (71) |
Applicant: MITSUBISHI JUKOGYO KABUSHIKI KAISHA |
|
Tokyo (JP) |
|
| (72) |
Inventors: |
|
- Azumi, Tomio,
Hiroshima Mach. Works Mitsubishi
Nishi-ku,
Hiroshima-shi,
Hiroshima-ken (JP)
- Kishi, Osamu,
Hiroshima Mach. Works Mitsubishi
Nishi-ku,
Hiroshima-shi,
Hiroshima-ken (JP)
- Hayashi, Kanji,
Hiroshima Mach. Works Mitsubishi
Nishi-ku,
Hiroshima-shi,
Hiroshima-ken (JP)
- Yokota, Shozo,
Hiroshima Mach. Works Mitsubishi
Nishi-ku,
Hiroshima-shi,
Hiroshima-ken (JP)
|
| (74) |
Representative: Henkel, Feiler, Hänzel & Partner |
|
Möhlstrasse 37
81675 München
81675 München (DE) |
|
| |
|
| (54) |
Method for grinding roll |
(57) The known on-line roll grinding method is improved so as to avoid clogging of grinder,
breaking of a grinder corner portion, complication of a grinder construction and
buzzing vibration of a grinder. A plurality of grinder holders adapted to press grinders
mounted to their tip end portions against a roll surface, are arrayed along the axial
direction of the roll within a frame which can reciprocate along the roll axis. The
grinders are mounted within the holders with their rotary axes inclined in the axial
direction of the roll with respect to normal lines of the roll surface. The rotary
axes of the grinders are displaced by a given offset amount H with respect to the
rotary axis of the roll. The improvements reside in that an inner diameter
dG and an outer diameter D
G of the grinder and the offset amount H are chosen so as to fulfil the following formulae:
0.1 ≦ H/D
G ≦ 0.4, and
0.1 ≦
dG/D
G.