Displacement and deflection measuring device for main...

Details Displacement and deflection measuring device for main... Displacement and deflection measuring device for main...

2007-04-30

2010-12-21

Howell, Daniel W (Department: 3726)

Gear cutting, milling, or planing

Milling

Machine frame

C408S008000, C408S013000, C408S061000, C409S186000, C409S194000, C700S175000, C700S193000

Reexamination Certificate

active

07854575

ABSTRACT:
A reference block30attached to a housing20ais moved together with a main spindle20to a measurement start position A1, and the reference block30is so moved in a Z-axis direction as to across air injected from an air injection nozzle25, so that a thermal displacement of the main spindle20is calculated based on change in pressure measured in the movement. The outer circumference of a tool mounted on the main spindle20is brought close to a leading end face of the air injection nozzle25, and the air is injected to the outer circumference of the tool while rotating the tool at a predetermined position, and the air pressure is measured so that the rotational deflection of the tool is calculated based on the change in the measured pressure.

REFERENCES:
patent: 3602090 (1971-08-01), Whetham
patent: 4628441 (1986-12-01), Johnstone et al.
patent: 4808048 (1989-02-01), Miller
patent: 5214592 (1993-05-01), Serizawa et al.
patent: 5779405 (1998-07-01), Aiso et al.
patent: 5795112 (1998-08-01), Senda
patent: 5895181 (1999-04-01), Ito et al.
patent: 7367756 (2008-05-01), Sugata et al.
patent: 2001-138178 (2001-05-01), None
patent: 2005-313239 (2005-11-01), None

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