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Title:
MAIN SPINDLE EQUIPMENT
Document Type and Number:
Japanese Patent JP3759893
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To maintain excellent processing precision by preventing occurrence of thermal displacement due to a cooling route.
SOLUTION: A bearing housing 2 is composed of an inner hosing 8 for holding a bearing row 4, an outer housing 9, and a sleeve 11. Between the inner housing 8 and the outer housing 9, and also between the sleeve 11 and the outer housing 9, a spiral outward-going route 12 and a returning route 13 are formed respectively, with both of their front ends connected with each other through a connection hole 14. Furthermore, at the rear side of the outer housing 9, a supply route 15, which is connected with the rear end of the outward-going route 12, and a recovery route 16, which is linked with the rear end of the return route 13, are formed individually.


Inventors:
Yoshimura Tatsuhiro
Application Number:
JP2001320947A
Publication Date:
March 29, 2006
Filing Date:
October 18, 2001
Export Citation:
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Assignee:
Okuma Corporation
International Classes:
B23Q11/12; B23B19/02; (IPC1-7): B23Q11/12; B23B19/02
Domestic Patent References:
JP4025343A
JP9070738A
JP8320024A
JP8300239A
JP2015902A
Attorney, Agent or Firm:
Yoshiki Ishida