Electronic Lead Screw Project

[john fletcher 1Participant @johnfletcher1]

Hello John, is it a Huanyang inverter which has failed ? I have read with interest how some other members / readers are suggesting Huanyang are not up to expected standards, but I have never heard of a failure in real life. Could you be the one. John

[John HinkleyParticipant @johnhinkley26699]

Hi, John,

No. The one that has failed is one of those generic VFDs that are available cheaply online. It's a 1.5kW one that only cost me about £50 delivered – so I shouldn't really be that surprised, should I? The Huang Yang VFD on my mill has been excellent ever since installing it a couple of years ago with no sign of problems. Hope I'm not tempting fate!

John

[John HinkleyParticipant @johnhinkley26699]

I've got to the stage of mounting all the electronic bits in an enclosure. Typically, in a bid to keep the costs down, I went for a cabinet one size smaller than I should have, so things are getting a trifle cramped. In the end, I mounted the Launchpad PCB vertically to gain a little breathing room:

The perforated box at the bottom of the picture is the power supply for the toolpost-mounted spindle. The space to the left of it is reserved for the wall wart power adapter for the LaunchPad/ELS boost board combo.

I've also finished all the plug and socket wiring which is temporarily balancing on the surface grinder as I've run out of bench space!

When the enclosure has been completed and wired together, I'll finish mounting the spindle encoder and leadscrew servo to the lathe. Despite all the effort I went to, in order to arrange the gearing for the spindle encoder to run off the headstock output shaft at spindle speed, I eventually went for an expanding mandrel in the spindle itself with a pullet mounted directly. It means that I can't get stock through the spindle, but I've never used that facility in all the years that I've had the lathe, and don't expect to need it in the future.

Here it is temporarily clamped in position with a toolmakers clamp. I did, at one stage, think that I'd never get this far! Hopefully a bit more progress in the coming days.

John

[Tony Pratt 1Participant @tonypratt1]

Looking good, a worthwhile project, I'm glad I did it!

Tony

[John HinkleyParticipant @johnhinkley26699]

The electonics cabinet is now virtually complete and about to be bolted to the lathe stand. The spindle encoder has been secured to the headstock and an update video will appear shortly on YT. Anyone following the saga will know where to look.

John

[John HinkleyParticipant @johnhinkley26699]

I feel that I have been monopolising this thread for too long, so this really is the last hurrah. The project is complete and to say I'm happy with it is an understatement. It has not been without its problems (all of my own making) but it is enormously satisfying to have it finished. I know some forum members don't like self-promotional videos, but please indulge me one last time, instead of taking up "column inches":

ELS project – the final countdown

John

[Tony Pratt 1Participant @tonypratt1]

I can't get the link to work?

Tony

[Roger ClarkParticipant @rogerclark]

Think this is the one?

Roger

[Roger ClarkParticipant @rogerclark]

My first Duplicate!

Edited By Rockingdodge on 29/08/2021 17:50:32

[John HinkleyParticipant @johnhinkley26699]

Thanks, Rockingdodge. I don't know what I did wrong and it was too late to edit the original post. Perhaps a moderator can sort it?

John

[Author]

Posts