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mechman4807/04/2019 12:24:45
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2391 forum posts
374 photos
Posted by Daniel on 07/04/2019 12:02:09:
Posted by Neil Wyatt on 05/04/2019 09:54:26:

It may be that after long use slight wear has made the commonly used tapers an even better fit.

Some form of elector system is the answer.

Neil

Uuumm ....

At the risk of appearing daft, what is an elector system ?

cheeky ATB

I think Neil meant 'ejector system'...devil

George.

Boiler Bri07/04/2019 13:13:03
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787 forum posts
277 photos

Its the new avatar its gone to his head 😳

Boiler Bri12/06/2019 20:13:16
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787 forum posts
277 photos

OK so I forgot about this problem as the weather warmed up. I cleaned all the tapers i use on the milling machine and the bore itself. The problem seems to have gone away for now.

Trouble is it does not end there.

I was running at top speed milling some bronze the other evening and the speed counter stopped working. Before i start dismantling the think has anyone else experience this problem?

Is the speed calculated via the drive or is it a counter of some sorts on the spindle?

Bri

Daniel12/06/2019 20:25:03
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205 forum posts
37 photos

Hello Bri,

I had the same problem on my Weiss.

Look under the cover at the top of the spindle. There is a plate which runs through a sensor.

This became contaminated with grease. Gave it a clean, and it worked as it should.

I could send a photo in the morning, if that helps.

ATB,

Daniel

Boiler Bri12/06/2019 21:23:07
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787 forum posts
277 photos

Hi Daniel. I will have a look. It was vibrating a bit. It might have worked loose.

Cheers

brian

Boiler Bri17/06/2019 21:08:21
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787 forum posts
277 photos

I removed the top cover but there is nothing hiding in there.

I also had a look in the control box, there is a ribbon cable that goes from the digital display to a small circuit board and that looks ok?

This is the circuit diagram that came with it.

No signs of a tacho?

pcb.jpg

Daniel17/06/2019 21:19:55
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205 forum posts
37 photos

Hi Brian,

Can you post a photo of the top of the spindle ?

With cover removed.

I'm watching this space.

HTH,

Daniel

Boiler Bri17/06/2019 21:21:13
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787 forum posts
277 photos

ERM i put it all back together there really was nothing. Just the motor and the casting top!

I think its generated by the filter somehow?

Bri

Boiler Bri17/06/2019 21:23:07
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787 forum posts
277 photos

Just spotted that there is an induction head, maybe that's something to look for by following the wires. Too bleary eyed now and enjoying a Dads day beer beer

Will try tomorrow

B

Daniel17/06/2019 21:33:05
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205 forum posts
37 photos

Hi Bri,

I would remain convinced, for the moment, that the tacho reading is more dynamic.

Can you post some photos of the general gubbins ?

Hoping to help,

ATB,

Daniel

Boiler Bri18/06/2019 08:22:12
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787 forum posts
277 photos

Hello Daniel,

It looks like you were correct. The motor is mounted on a plate and underneath is the disk and counter unit.

Running at high speed has sent all the grease outwards and into the unit.

Thanks for your help.

Brian

drive.jpg

drive 2.jpg

drive 3.jpg

MichaelR18/06/2019 11:50:14
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328 forum posts
55 photos

On my WM18 I altered the position of the counter unit as in photo. Mike.

Mod 1

Boiler Bri18/06/2019 12:34:32
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787 forum posts
277 photos

Thats a good idea Mike. I will probably do the same to mine.

 

For now i am up and running again.

 

Cheers

 

Bri

.

Edited By Boiler Bri on 18/06/2019 12:35:09

Howard Lewis18/06/2019 17:43:17
2035 forum posts
2 photos

Putting a cold arbor into a warm quill would cause this problem. As the quill cools, it shrinks onto the arbor.

Probably already said!

MT tapers don't need a lot of end load to grip. Too much and they do become hard to remove.

Howard.

Daniel19/06/2019 05:45:48
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205 forum posts
37 photos

Great news Brian.

Glad you got it sorted.

ATB,

Daniel

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