Machining a circular curved surface in a part of a pattern for part of the conversion. I am going to make and fit an auxilliary shaft(Jack Shaft) that will take the place of the original motor.
Almost to required depth.
The patterns, one for a pulley blank, one for a base plate and one for the jack shaft bearing assembly. Of course a steel(or other material)plate could be fabricated and a couple of ball bearing plummer blocks bolted on, but hey,, ther aint no casting involved then.
The pattern for the jack shaft bearing assembly has the cylindrical section off-set as can be seen.
Base plate being milled. Bugger! I had to interrupt the VFD doings to cast and machine these Aluminium "vice" jaws for the mill/drill table, at least I got to do some more casting.
Mould for the bearing housing with sand core in place, getting exciting, will be pouring Aluminium soon.
A little while later here she is being faced on the base surface.
Set up on the cross slide and the through hole being bored to a size that will clear the shaft.
Now machining a quick mandrel to suit the through hole on the casting. The casting will be mounted on this mandrel.
There is a grub screw in from the base surface that clamps the casting on the mandrel. Here the first bearing recess is being bored.
This should be a new window, minimise or close it to return to Home Page or press