Machine tool positioning arrangement

Details Machine tool positioning arrangement Machine tool positioning arrangement

1994-07-01

1996-10-29

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

Machine frame

408 53, 408234, 408235, 409237, B23B 3916

Patent

active

055690041

ABSTRACT:
A machine tool is provided in which a carriage is supported on the upper flat surface of a work table by first bearings. The carriage extends beyond the bearings in one direction to support a tool, so that the weight of the carriage and tool creates a moment tending to rotate the carriage downwardly toward the work table on one side of the bearings. This is countered by a second bearing that extends to a second downwardly facing surface which may be a separate element or the undersurface of the work table. The second surface is adjustable for parallelism with the work table. Linear actuators move the carriage over the work table. In a multispindle machine, three actuators are required, at least two of which are nonparallel.

REFERENCES:
patent: 3156137 (1964-11-01), Jonker
patent: 4417843 (1983-11-01), Bonga
patent: 4569627 (1986-02-01), Simunovic
patent: 4714339 (1987-12-01), Lau et al.
patent: 5259710 (1993-11-01), Charles
patent: 5267818 (1993-12-01), Marantette

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