Machine tool with improved spindlehead mounting and traversing m

Details Machine tool with improved spindlehead mounting and traversing m Machine tool with improved spindlehead mounting and traversing m

1987-08-12

1989-06-27

Briggs, William

Typewriting machines

Having fluid-pressure power drive

For movement of carriage or platen

74 8915, 408137, 409231, B23C 106, B23B 4718, F16H 118

Patent

active

048424579

ABSTRACT:
A machining center or machine tool comprises a bed, structure to support and position the workpieces, and a rotary spindle fed with worktools by an automatic tool changer and carried by a spindlehead which also carries the driving motor therefor. The spindlehead moves back and forth along a rectilinear path under the control of a circulating-ball screw and nut assembly, the screw of which is rigid with the spindlehead and has its axis intersecting that of the spindle. The lead nut of the same assembly is caused to rotate by a motor and is kept axially fixed.

REFERENCES:
patent: 1475614 (1923-11-01), Williams
patent: 2882741 (1959-04-01), Liebmann
patent: 3455207 (1965-07-01), Meinke
patent: 3640147 (1972-02-01), Fantoni
patent: 3665805 (1972-05-01), Wolf
patent: 3768364 (1973-10-01), Lancaster et al.
patent: 3803928 (1974-04-01), Konkal et al.
patent: 4000661 (1977-01-01), Menzel
patent: 4417422 (1983-11-01), Redeker et al.
patent: 4449988 (1984-05-01), Redeker et al.
patent: 4510668 (1985-04-01), Ishida et al.
patent: 4517853 (1985-05-01), Tani et al.
"Entwicklung schwerer bahngesteuerter Fras-und Bohrwerke", Werkstatt Und Betrieb, 107 (1974) 7, By C. Ramusino et al., pp. 387-390.

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