Gallery, Projects and General > Project Logs

Power hammer

<< < (3/3)

JHovel:
Other than the wear of the teeth, what's wrong with the drive gear? I would think rebuilding the teeth would be a lot easier than making a whole new wheel!
I take it it's forged/wrought iron? Why would you not build up the wear and remachine or file them to original shape?

awemawson:
That gear could be flame cut on an oxy-acetylene CNC table given a drawing, which would be relatively straightforwards to create. probable a  bit thick for plasma.

smiffy:
When I have some time I will start a new thread on the mill restoration as it will be a long term project .

The gear is a cast iron  bevel gear driven by the pit wheel which is on the water wheel shaft and it is completely worn out  with several teeth missing . It is 6 inches deep
 I will fabricate the main frame of the gear out of 6 x 1 inch bar and profile  a piece of 3/4 inch plate to the shape as in the photo .
The cone i will form from 3/4 plate and roll to the 20 degree angle , the teeth i will cut from a bar of 2 inch x 5 inch bar and weld on individually , there are 44 in total . The gear is one direction so the teeth are only angled on one side the other side is at 90 degrees to the cone face .

I could have a new gear cast but the cost is prohibitive.

I will not repair the old gear as its important not to make irreversible changes as all the equipment as well as the building are listed   . The old gear will stay with the mill and can be studied in its original state by future owners   

WeldingRod:
You might make a quick dxf file and shop it to the waterjet and flame cutting shops.  4" is doable.  Or, make a stack of plates, weld, and finish grind/machine.
Scheme differently!

Sent from my SAMSUNG-SM-G891A using Tapatalk

Navigation

[0] Message Index

[*] Previous page