Title:
MACHINE TOOL
Document Type and Number:
Japanese Patent JP3914356
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent positional displacement and chatter of a main shaft head and to prevent heat expansion of the main shaft head by rotation of a main shaft from extremely increasing load on a guide, by providing a saddle with a pressing member for pressing the main shaft head onto a guide with an elastic force.
SOLUTION: A pressing member 5 presses a main shaft head 4 through a guide 10c downward by its previous load F0. The pressing member 5 applies the previous load F0 to the main shaft head 4 so that the load onto the guide 10a is always in a stable region. Thus, even when the main shaft head 4 moves forward and the load applied to the guide 10a due to self weight or cutting resistance of the main shaft head 4 becomes near 0, a half of the previous load F0 operates. As a result, vertical displacement of the main shaft head 4 is small, and positional displacement and chatter of the main shaft head 4 hardly occur.
Inventors:
Haruhiko Niitani
Tatsuhiro Mizobe
Tatsuhiro Mizobe
Application Number:
JP20455899A
Publication Date:
May 16, 2007
Filing Date:
July 19, 1999
Export Citation:
Assignee:
Toyo Advanced Technologies Co., Ltd.
International Classes:
B23Q1/00; B23Q1/70; B23Q1/01; (IPC1-7): B23Q1/70
Domestic Patent References:
| JP11033856A | ||||
| JP58015638A | ||||
| JP5038828B2 |
Attorney, Agent or Firm:
Aoyama Aoi
Yasumichi Furukawa
Atsushi Maeda
Yasumichi Furukawa
Atsushi Maeda
Previous Patent: SETTLEMENT METHOD AND SYSTEM USING PORTABLE TELEPHONE SET
Next Patent: TRANSFER ASSISTING DEVICE
Next Patent: TRANSFER ASSISTING DEVICE