I considered making a tapered mandrel, it was only 8 parts (16 ends) and that would have taken longer then simply indicating and twisting them round with the 4 jaw.
If 800 parts a mandrel would be on the table.
I began a job this afternoon that is 12 parts, my employers time estimate is 50.4 hours.
Before starting the 50 hour job he said "throw a quick 3/16" keyway" in this single 2" diameter aluminum timing pulley.
The customer drawing requires a 3/16" keyway in a 17 MM bore, there is no combination of off the shelf bushings and broaches that will do this. Made a 17 MM broach bushing to fit a 3/16" broach, this went from a 20 minute job to a 3 hour job (-:
If 800 parts a mandrel would be on the table.
I began a job this afternoon that is 12 parts, my employers time estimate is 50.4 hours.
Before starting the 50 hour job he said "throw a quick 3/16" keyway" in this single 2" diameter aluminum timing pulley.
The customer drawing requires a 3/16" keyway in a 17 MM bore, there is no combination of off the shelf bushings and broaches that will do this. Made a 17 MM broach bushing to fit a 3/16" broach, this went from a 20 minute job to a 3 hour job (-:
Comment