Myford super 7 Positioning servo’s on Spindle and main infeed

[Andrew Davies 4Participant @andrewdavies4]

Not sure if these photos help.

They show an extra plate to the right and left

[Andrew Davies 4Participant @andrewdavies4]

Starting to look more like a lathe.

Edited By Andrew Davies 4 on 21/12/2018 06:47:17

[Andrew Davies 4Participant @andrewdavies4]

Just sent drawings off to have spindle plate made. Made proto type in wood. Did not put slots in proto type as did not save the machine. Have to wait a week or so for the machine shop. 3 days design to make sure it was right!. Keeping fingers crossed. slots are for motor to tension belt.

[Andrew Davies 4Participant @andrewdavies4]

As you will see from the attached, I am an electrical engineer, but the drawings work. This is the main spindle cutter plate. I have also got a few other bits comming.

Still about 100 hours of work before I cut gears.

[Andrew Davies 4Participant @andrewdavies4]

HMI now fitted

[Michael GilliganParticipant @michaelgilligan61133]

Nice

MichaelG.

[David George 1Participant @davidgeorge1]

Looking good please keep the pictures and progress coming.

David

[Andrew Davies 4Participant @andrewdavies4]

Someone has asked what paint I used.

Please see attached pics.

[Andrew Davies 4Participant @andrewdavies4]

Someone has asked what paint I used.

Please see attached pics.

The main paint was great both for brush and spray.

Edited By Andrew Davies 4 on 10/01/2019 18:20:58

Edited By Andrew Davies 4 on 10/01/2019 18:23:53

[Andrew Davies 4Participant @andrewdavies4]

Hi David

Looked at you profile. We come from similar background on engineering,but mine is electronic.

I also have a bike, Triumph street triple R, that is loved and cared for……

All the best

Andrew

[Andrew Davies 4Participant @andrewdavies4]

This has been a long research and strange conclusion.

As the MT 1 taper cutter holder is going to be vertical, I wanted a nut that will hold the cutter shaft in place. The cutter shaft is being machined from an existing MT1 taper avaliable on the internet.

I need a nut to thread on the end of the sherline head stock that would hold the shaft, my extensive research found nothing.

I went into my garage and looked through my plumbing fittings and found that a 15mm compression fitting fitted the head stock!!

Perfect!

Edited By Andrew Davies 4 on 15/01/2019 20:57:48

[Andrew Davies 4Participant @andrewdavies4]

A little late in the day, but I have had to get the bottom saddle ground. As the main bed was re ground it has dropped the saddle with respect to the under side of the bed. Due to this when you clamp up the bottom plate onto the saddle there is movement between the saddle and bed. I am also going to rind the saddle face that moves on the bed.

I have over ground the sable and will set up with some 0.02mm shim.

[Andrew Davies 4Participant @andrewdavies4]

After a lot of research I have come up with a cost effective a belt for the for the cutter. This works with the existing Sherline pulley. 4 MM Green Polyurethane Round drive belting

This comes in open strips and is welded with a small amount of heat. Done test and the joint is very strong.

 

Edited By Andrew Davies 4 on 16/01/2019 13:32:32

Edited By Andrew Davies 4 on 16/01/2019 13:38:23

[Andrew Davies 4Participant @andrewdavies4]

Shims cut for bottom saddle all from 0.02mm brass.

Waiting for saddle to come back. Not sure how many I will need. Easily cut with a shard blade.

Not sure of the width, I will wait for the saddle to come back before I cut.

 

Edited By Andrew Davies 4 on 16/01/2019 17:13:41

Edited By Andrew Davies 4 on 16/01/2019 17:14:57

[Andrew Davies 4Participant @andrewdavies4]

Bottom saddle dead stop ground away to fit around new ball screw bearing mount.

This is adjustable and is a mechanical stop to stop you hitting the tooling and damaging it.

[Andrew Davies 4Participant @andrewdavies4]

Someone has asked how I did the lettering in yellow. This is simply kitchen towel, rolled up, tapped and a flat pushed on it. Sooooooo easy. Needs about 3 coatings.

[Andrew Davies 4Participant @andrewdavies4]

Timing belt for spindle just arrived, fitted this morning.

[Andrew Davies 4Participant @andrewdavies4]

Got a 3/16th key for the shreline head stock. Sherline stated 3/16th but this is too big.

[Author]

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