Broaching is often impossible without the specific broaching or keyway machines unless you have a system that can be used in conjunction with a modern machining centre or driven tooling lathe; these extra bits of equipment open up the possibility of producing keyways, splines and torx through one-hit machining.
32.
For screw cutting, a "'half nut "'is engaged to be driven by the leadscrew's thread; and for general power feed, a key engages with a keyway cut into the leadscrew to drive a pinion along a rack that is mounted along the lathe bed.
33.
The final section of this route ( which began as the A463 ) was numbered the A454, which led to Wolverhampton Road West on the Willenhall-Walsall border being downgraded to a B-road, as had happened to the rest of the original A454 through Willenhall when The Keyway was opened some 20 years previously.
34.
"' Keyway Air Transport "'was a United States airline that operated from Frankfurt International Airport ( which at the time was also home to a United States Air Force facility; Rhein-Main Air Base ) using a Boeing T-43 Bobcat ( a military variant of the Janet fleet up until 2009 when it was retired from service.
