Patent ID: 6393713
Filing Date: 2002-05-28
Classification: B23B

Abstract:
A gage for determining the true dead center of a workpiece on a lathe or milling machine comprised of:a chuck, said chuck has one end of a metal stock inserted inside said chuck, wherein said metal stock is secured inside said chuck by a plurality of expanding and retracting radial arms of said chuck; a tail stock center, said tail stock center has a pointed end for being inserted into a small pilot hole drilled into a center of an opposite end of said metal stock; an adjustable tool carriage, said adjustable tool carriage is located on a bed of said lathe and provides a base for a tool holder, wherein said tool holder has a tool holder pocket formed inside said tool holder; a gage, said gage is of a linearly elongated configuration formed of two ends with one end removably inserted and secured within said tool holder pocket of said tool holder, said one end is opposite a branched, angular end with an upwardly sloping surface opposite a downwardly sloping surface, said gage is made from any material which is stiff and capable of being machined to close tolerances; a plurality of pre-cut shims, said shims being supplied in generous quantities with said gage; and a feeler gage, said feeler gage measures gaps in thousandths of an inch.