US Patent No. 9,796,075

FIXTURING DEVICE AND METHOD OF USE


Patent No. 9,796,075
Issue Date October 24, 2017
Title Fixturing Device And Method Of Use
Inventorship Yen-Chien Wang, Kirkland, WA (US)
Lincoln Coleman Wilkes, Kenmore, WA (US)
Assignee Apex Brands, Inc., Apex, NC (US)

Claim of US Patent No. 9,796,075

1. A fixturing device to position a tool relative to a work piece, the fixturing device comprising:
a motor;
a gear set with at least first and second gears that are driven by the motor, the first gear being positioned in closer proximity
to the motor than the second gear;

a screw that is connected to second gear to move in a first axial direction away from the work piece when the gear set is
driven in a first rotational direction by the motor and to move in an opposing second axial direction towards the work piece
when the gear set is driven in a second rotational direction by the motor;

a protrusion positioned within a slot in the screw to prevent the screw from rotating when moving in the first and second
axial directions;

a mandrel attached to the screw to move in the first and second axial directions with the screw, the mandrel including an
enlarged head;

an expandable collet with a hollow interior that receives the mandrel and an enlarged flange, the mandrel being axially movable
within the hollow interior and including a first width at the enlarged flange when the enlarged head is positioned outward
beyond a distal end of the collet and a larger second width at the enlarged flange when the enlarged head is position within
the hollow interior;

at least one position sensor to determine an axial position of the screw; and
an enlarged base with a contact surface that is spaced away from the enlarged flange of the collet to contact against the
work piece when the collet is in the larger second width.