Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine
Patent
1988-10-26
1989-08-15
Briggs, William
Metal working
Plural diverse manufacturing apparatus including means for...
Type of machine
29 27A, 29 27C, 409144, 409231, B23C 526
Patent
active
048561533
ABSTRACT:
A spindle mechanism is capable of rotating for a rotative tool and is capable of being locked for mounting a nonrotative tool. First and second curvic couplings may be forced into engagement by a large hydraulic force which concurrently unloads a combined thrust and radial bearing at the outboard end of the support. This permits the spindle, when mounting a nonrotative tool, to be rigidly supported in a nonrotative condition. A smaller hydraulic force may be utilized to move the spindle axially inwardly which disengages the first and second curvic couplings and preloads the combined thrust and radial bearing providing a properly preloaded rotational mode of support when the spindle is mounting a rotative tool. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
REFERENCES:
patent: 2957393 (1960-10-01), Kampmeier
patent: 3397614 (1968-08-01), Meinke
patent: 3851364 (1974-12-01), Noa et al.
patent: 4051583 (1977-10-01), Kato et al.
patent: 4570313 (1986-02-01), Holmstrom et al.
patent: 4599023 (1986-07-01), Poncenot
patent: 4643623 (1987-02-01), Kondo et al.
patent: 4657412 (1987-04-01), McLarty et al.
Bulletin of Yamazaki Mazak Corporation.
Briggs William
The Monarch Machine Tool Company
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