Arduino Stepper for Cowells Dividing Head

[Twizseven]

Machined adaptor spacer to join NEMA 17 stepper motor to Cowells Dividing Head.  Also made backplate cum thrust washer to fit on dividing head.  This was made form a piece of gauge plate.  This will take the wear (better than the aluminium of the spacer) of the spindle on the worm gear.  Next step is to to shorten the stepper spindle and add an 8mm dia bush.  Bore out the HUCO joiner to 8mm both sides.  Make an adaptor to convert the 6mm thread on the worm spindle to the 8mm bore of the HUCO.


Hopefully by the time all this is done I should have finished assembly of the Arduino Controller which uses Daves (SOD) stepper software.  Just waiting for some 2.5mm brass screws from supplier.

Then see if it all works.

Colin

[Twizseven]

Adaptors all made and assembled on the Cowells Dividing Head.  All appears to move freely enough.

Finished assembling the Indexer Controller.  It all powered on okay.  Plugged stepper into controller and all works okay.  Main thing to remember is that the ratio of the Cowell Dividing Head is 40:1 not the relatively standard 90:1

Just need to fit on mill and do a proper test.  Will borrow gear cutter of mate nd see how I get on.

Colin

[gerritv]

A great addition to the mill. I made something similar using a spare Sherline headstock.

gerrit