Machine tool

Details Machine tool Machine tool

2008-04-15

2008-04-15

Ross, Dana (Department: 3722)

Metal working

Plural diverse manufacturing apparatus including means for...

Type of machine

C029S02600B, C029S03800E, C409S168000, C409S224000, C409S235000, C269S058000, C269S073000, C408S089000, C408S234000

Reexamination Certificate

active

11739105

ABSTRACT:
Machine tool furnished with: a table (20) free to swivel about a horizontal swivel center axis, and having a table body (22) for carrying a workpiece, and an axially rotatable rotary shaft (23) disposed with the axis of the rotary shaft (23) coinciding with the swivel center axis, with a first end of the rotary shaft affixed to the table body (22); a support structure (15) for supporting rotatably the rotary shaft (23) via a bearing (15b); a swivel drive mechanism (25) for axially rotating the rotary shaft (23); riding members (31) abutting on an outer-peripheral locus on a rotary shaft (23) second end, off a portion, supported by the bearing (15b), of the rotary shaft (23); and hold-down mechanisms (32) arranged on the support structure (15), for supporting the riding members (31) and thereby pressing on and apply a load to the rotary shaft (23) outer-peripheral locus from above.

REFERENCES:
patent: 3248101 (1966-04-01), Muller et al.
patent: 3361033 (1968-01-01), Muller
patent: 3822959 (1974-07-01), Tabard
patent: 3826584 (1974-07-01), Mengeringhausen
patent: 3998127 (1976-12-01), Romeu
patent: 4644635 (1987-02-01), Murai et al.
patent: 4664570 (1987-05-01), Tsukiji et al.
patent: 4858290 (1989-08-01), Hirose et al.
patent: 5172464 (1992-12-01), Kitamura et al.
patent: 5669867 (1997-09-01), Hoppe
patent: 5762594 (1998-06-01), Hoppe
patent: 5909988 (1999-06-01), Hoppe et al.
patent: 6948894 (2005-09-01), Taga et al.

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