Title:
CHUCK DEVICE FOR LATHE
Document Type and Number:
Japanese Patent JP3798843
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a chuck device for a lathe having the self-centering function independently centering on a main spindle and an eccentric shaft respectively with one draw bar and capable of temporarily clamping and permanently clamping.
SOLUTION: A first chuck mechanism for chucking a main spindle section (journal section J) of a work is connected to a draw bar joint 5 slid in a housing 3, and the force of the spring S2 of a second chuck mechanism chucking an eccentric section (arm section A) where the cutting center of the work is located is made stronger than the force of the spring S1 of the first chuck mechanism. The chucking by the second chuck mechanism is applied via the force of the spring S2 only. For the chucking by the first chuck mechanism, temporary clamping is applied via the force of the spring S1, chucking is applied by the second chuck mechanism, then the timing of the engagement of the draw bar joint 5 with the second chuck mechanism is set so that the force of a draw bar D is transferred to the work as it is.
Inventors:
Muneki Hiraoka
Application Number:
JP9252596A
Publication Date:
July 19, 2006
Filing Date:
April 15, 1996
Export Citation:
Assignee:
Imperial Chuck Co., Ltd.
International Classes:
B23B31/10; B23B31/12; (IPC1-7): B23B31/10
Domestic Patent References:
| JP62008003U | ||||
| JP57153424U | ||||
| JP61166707U | ||||
| JP1163005U | ||||
| JP60127906A | ||||
| JP64005705A |
Attorney, Agent or Firm:
Bunji Kamada
Higashio Masahiro
Torii Kazuhisa
Higashio Masahiro
Torii Kazuhisa