Main shaft balancing device for machine tool

Details Main shaft balancing device for machine tool Main shaft balancing device for machine tool

2005-07-12

2005-07-12

Kim, Chong H. (Department: 3682)

Lubrication

Systems

Machine tools

C184S024000, C184S005000, C092S168000, C267S119000, C267S130000

Reexamination Certificate

active

06915879

ABSTRACT:
A gas spring comprising a cylinder body filled with compressed gas and an upright rod passing through a rod side end wall member of the cylinder body. By supporting a main shaft unit with the gas spring, the load on a vertical displacement mechanism is reduced. A pair of upper and lower ring-shaped seal members, which seal between the rod end wall member and the rod, are provided inside the rod wall member. Ring-shaped oil filling chambers are formed in between the ring-shaped seal members and between the rod end wall member and the rod. An oil filling mechanism fills the oil filling chambers with lubrication oil.

REFERENCES:
patent: 345041 (1886-07-01), Fixary
patent: 2689626 (1954-09-01), Peters
patent: 2819061 (1958-01-01), Platou
patent: 5305854 (1994-04-01), Wheeler
patent: 5400871 (1995-03-01), von Sikorski et al.
patent: 5465811 (1995-11-01), Katz
patent: 0454614 (1992-05-01), None
patent: 6297217 (1994-10-01), None
patent: 0071346 (1995-01-01), None
patent: 1054435 (1998-02-01), None
patent: 1105256 (2001-04-01), None
Copy of International Search Report for PCT/JP01/08081.

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