"Temporary" machining

The name won't mean much to most people but the Multimachine news group has kicked the idea around for years. The idea is to make a lathe and a milling machine using an auto wheel hub assembly and using it to machine the smaller parts needed to build a machine tool. To make good use of this lathe/mill you do need to learn to cast aluminum. This is not difficult and need not cost much. It can be as simple as a hole in the ground half-filled with charcoal with a piece of exhaust pipe and a hair dryer used to supply air. The crucible can be a small cast iron pot. Much information is on the web.


These "smaller" parts include:

Spindle bushings

Spindle end play adjusters

Spindle ball or roller bearing housings

Spindle cartridges


Lathe chuck or faceplate adapters

Workpiece holding adapters

Pulley adapters

Thread follower sprocket adapters


A milling bit holder for:

Milling slotted parts for the ways supports

Milling and slotting the clamps for the carriage handwheel device

Machining the nut and hub for the carriage handwheel

Milling the way clamps

Milling a toolpost.


Some of these components are made from steel scrap, most are made from your aluminum alloy castings.

It would be much to expensive to have to pay a machine shop to do this work for you.


hub_mounting.jpg

Use these studs (show without the hub and with longer studs) to mount a thick piece of plywood to be used to adapt the rear hub assembly to the front of the headstock.

rear_hub.jpg

Rear hubs often have drum type brakes and the drum can be mounted so that it can be used a flat pulley for V belts as was done by lathe

makers in the past.


The holes in the brake drum can be used to locate holes in a and the whole assembly bolted together with countersunk bolts.