High acceleration spindle drive and method of using same

Details High acceleration spindle drive and method of using same High acceleration spindle drive and method of using same

2005-02-01

2005-02-01

Fenstermacher, David M. (Department: 3682)

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

C074S816000, C414S752100

Reexamination Certificate

active

06848338

ABSTRACT:
An apparatus for moving a spindle along a longitudinal axis, the apparatus includes a spindle; a drive member for moving said spindle over a range of travel along said longitudinal axis in a first direction; a spring for applying a first force in combination with a second force to the spindle in the first direction; a stop element arranged so as to disengage the second force, such that when said spindle is within a first portion of said range of travel, said first force is applied to said spindle in combination with said second force, and when said spindle is within a second portion of said range of travel, said stop element disengages said second force so only said first force is applied to said spindle.

REFERENCES:
patent: 4706379 (1987-11-01), Seno et al.
patent: 4794689 (1989-01-01), Seno et al.
patent: 5070598 (1991-12-01), Itagaki et al.
patent: 5987735 (1999-11-01), Horning et al.
patent: 20030097824 (2003-05-01), Mayer et al.
patent: 20040074085 (2004-04-01), Gieskes et al.

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