Myford spindle drive

This topic has 4 replies, 3 voices, and was last updated 26 March 2013 at 11:03 by John Hall 6.

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24 March 2013 at 07:13 #115142
John Hall 6
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@johnhall6
I have lost the drive between the headstock pulley and the first gear in the low speed back gear. Is the drive via a key or a shear pin? Intermitent cutting on a faceplate did the damage and I hope it is reasonable uncomplicated to fix after removal of the mandrel assembly.

Cheers to all

John Hall
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24 March 2013 at 07:13 #12103
John Hall 6
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@johnhall6
Drive between spindle pulley and small backgear.
26 March 2013 at 09:16 #115328
Brian Wood
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@brianwood45127
Hello John,

Ouch.

I think I am right in saying all Myford spindle drives are by woodruff key. They did use pins for gear couplings on lathes up to the ML4 before switching to keyways there as well..

Not sure what you will find when you take it to pieces.

Just a thought before you do that as you don't say which model Myford you have, but it could just be the manual key for back gear has been shaken out of engagement by the shock loading from intermittent cutting. Good luck anyway

Brian
26 March 2013 at 09:20 #115329
John Stevenson 1
Participant
@johnstevenson1
The pulley is just a press fit onto the bronze sleeve gear.

Drop of Loctite will do the trick.
26 March 2013 at 11:03 #115348
John Hall 6
Participant
@johnhall6
Thanks, Brian and John, I'll keepyou posted with results of my investigation, I hope it is not a wood ruff key or I'll need to cut a new key way!

Cheers anyway and thanks again,

John Hall
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Myford spindle drive

Myford spindle drive

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