Title:
TURNING TYPE GRINDING CONTROL METHOD
Document Type and Number:
Japanese Patent JP3277843
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To stabilize a grinding operation and grinding efficiency by controlling the ascending and descending cylinder of the running burring device in the flash weld zone of a continuous rolled round billet in accordance with the turning position and the self-weight of the device so that the pressing force of a grindstone to the part to be ground becomes prescribed largeness.
SOLUTION: Grinding devices 13a-13c are arranged with 120° each shifted in the turning ring surface making the round billet the central axis, and respective turning zone A1-A3 are made to be 130° and mutually overlapped by 10°. Ascending and descending cylinders 14a-14c are installed to respective grinding devices 13a-13c, and feeding oil pressures ρ1, ρ2 are controlled by a control system to make the pressing force constant. The constant pressure is always applied to respective rod side parts with a balancing valve regardless of the turning angle, whereby the descending of the grindstone due to the self-weight is prevented and the evacuating operation is also executed by this pressure. Also, the head side part is pressed so that the self-weight plus the rod side pressure is denied and the prescribed pressing force is obtained in accordance with the turning angle.
Inventors:
Koji Okushima
Susumu Ohkawa
Susumu Ohkawa
Application Number:
JP10438497A
Publication Date:
April 22, 2002
Filing Date:
April 22, 1997
Export Citation:
Assignee:
Nippon Steel Tube Co., Ltd.
International Classes:
B21C37/30; B23K11/04; B23K37/08; (IPC1-7): B21C37/30; B23K37/08
Domestic Patent References:
| JP55101358A | ||||
| JP5104422A | ||||
| JP5220492A | ||||
| JP985325A | ||||
| JP675644U | ||||
| JP5349188U |
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)