Tap process for hard workpieces
AssigneeKennametal Inc.
InventorsRalph W. Hughes, Jr., Troy F. Walters
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Abstract
A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence to cut threads progressively deeper into a substrate. The present invention provides a method of aligning and orienting each progressive tap to begin its cut at the same initial starting point.
Claims9
An arm for a tap alignment assembly comprising:
- a first threaded bore at a first end adapted to receive a tap that has a proximate end adapted to be held by a chuck and an opposite distal end having a threaded portion, wherein the first threaded bore receives the distal end of the tap, wherein the pitch and geometry of the threads of the first threaded bore are nearly identical to the internal thread desired to be formed in a workpiece, and a second bore at a second end for receiving a screw to fix the arm to a bracket.
An arm for a tap alignment assembly wherein the tap has a proximate end adapted to be held by a chuck and an opposite distal end;
- the arm comprising:
- an elongate body containing a first bore at a first end thereof, the first bore being threaded, and the first bore being adapted to receive a distal end of a tap, wherein the pitch and geometry of the threads of the first threaded bore are nearly identical to the internal thread desired to be formed in a workpiece;
- and a second bore for receiving a screw to fix the arm to a bracket, and the second bore being smooth;
- and said arm has a longitudinal axis.
Dependencies are inferred from the claim text.