Author Topic: Alexander/Deckel Cutter Grinder questions  (Read 510 times)

Offline gerritv

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Alexander/Deckel Cutter Grinder questions
« on: May 05, 2019, 04:29:25 PM »
I recently acquired for a very good price an Alexander 2CGD in very good condition.

I need to make wheel hubs and a motor mount platform but other than cleaning and lubrication the machine is fine.

While taking, or rather trying, to take the work head apart I have run into some issues.
1. I can't get the collet spindle out without what seems to be excessive force. It is very stiff to turn in its working position, when pushing it out of the casting it gets stuck. I can't feel any burrs in that spot but I will deburr anyway to see if that gets it out of the casting. I really don't want to scar up the inside of the casting!

2. how stiff should it be to turn the collet spindle when in use?

3. The collet spindle has a partially graduated collar, is that supposed to be turn-able without rotating the collet holder? It seems to only turn that way in concert with the black knurled knob right behind it.

gerrit, still patiently waiting to get ignition going for my Ridders Glass Engine :-(
« Last Edit: May 05, 2019, 04:58:25 PM by gerritv »
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Online Jo

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #1 on: May 05, 2019, 08:13:55 PM »
The Collet spindle should rotate easily in the holder.  The pull knob above the face of the collect locks it into the dividing wheel.

You should be able to unscrew the knurled knob and remove the collet, then the collet spindle  has two locking nuts that are locked together to adjust the friction pressure on the spindle.

Jo
« Last Edit: May 05, 2019, 08:18:40 PM by Jo »
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Offline gerritv

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #2 on: May 05, 2019, 10:02:19 PM »
Hi Jo,
Thank you, I removed those 2 locking nuts and the spindle is still very tight. Perhaps the grease/lubrication is my age and also locking up a bit more every month.
Will soak overnight in something and go from there. Knowing it should rotate easily is good news and now my goal.

Is the LH graduated wheel supposed to move independently of the middle knurled wheel as well (D7 and T7 in your diagram)? D7 seems to be threaded on, perhaps it is too tight. None of the manuals seem to describe those graduations. I had to soak and release the traversing knob and graduation wheel so thinking this other one should move as well.

This is a beautifully built machine and while not with Deckel on the label it seems equivalent care was time during its build. No sloppiness at all.

gerrit
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Offline gerritv

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #3 on: May 06, 2019, 02:59:01 AM »
Success!! Your diagram is the clearest yet that I have seen of this assembly.

I got the graduated dial/lock ring/detent assembly apart, cleaned, lightly oiled/wiped and put back together correctly (the knurled locking ring had been put on backwards). I can now lock the collet shaft, unlock the dial, move the dial some # of degrees and lock it again.

The collet spindle also turns easier after cleaning out the ancient oil/gum. Still a bit stiff but much more usable. I might take it apart again and soak it overnight in paint thinners.

Next step is to carve out some hubs!! Thankfully I have a bunch of 2" Atlas SPS at hand. I think it is like 1144 stressproof.

gerrit
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Online Jo

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #4 on: May 06, 2019, 06:52:12 AM »
Well done Gerrit  :)

The manual for these grinders is available on line: http://www.neme-s.org/Shaper%20Books/DECKEL%20OPERATING%20INSTRUCTIONS.pdf

Jo
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Offline Don1966

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #5 on: May 06, 2019, 10:15:55 PM »
Thanks Jo that book helps with my Tool cutter grinder! I had bought this one from northern tools years back look almost like a Deckel!


 :cheers:
Don

Online Mcgyver

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #6 on: May 06, 2019, 11:42:19 PM »
did you get the depth of cut assembly apart?  Been waiting for some brave soul to go first :)

They're beautifully made.  i don't use mine too often (have 2 T&CG's for regular work), but figured one day I'd be able to get through the manual without the head hurting.  Hasn't happened yet

congrats on a nice addition

Offline gerritv

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #7 on: May 07, 2019, 12:24:11 AM »
Thank you, it is incredibly well made. Not used to that at all :-)

Do you mean the traversing knob on bottom lh side of machine? I had that off to get the graduated dial to turn for setting zero. I need to make hook wrenches for some other disassembly, using screw driver and hammer to loosen those off is just not the thing to do on this machine. Then the whole traversing shaft will come out for cleaning so stay tuned.

Clearances are tight enough that dried up lubricant will seize things up!
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Offline gerritv

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Re: Alexander/Deckel Cutter Grinder questions
« Reply #8 on: May 14, 2019, 01:22:48 AM »
First wheel collet almost completed. I made 2 jigs/holders so far, 1 or 2 more to do before starting 'production'.
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