Winner A Dividing Head By Wayne

[wayne.inspain]

I came home this evening and wanted to see if there was any responses to my post, thank you Fomogo Mike for your positive response
I am quite taken aback by the encouragement I have received in this project. Mark I had never heard of MacGyver and looked him up on wiki
I must have laughed for 10 minutes non stop!! by some coincidence I always carry a genuine swiss
army knife, but fortunately don't seem to find myself in the positions he does. Please do not change this thread to MacGyver saves the world by making a dividing head. lol

 

[jdj72083]

I found this guy, what to use it for???

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[atlas ten]

Not much for cfm as a compressor. Make an ic hit miss. Machine a head, single lobe cam for valves and spark.

I found this guy, what to use it for???

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Nice work wayne. I have plans to use a dividing head. Not much material to make it yet.
Jack

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[jdj72083]

Thanks, I may do a air engine soon.

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[wayne.inspain]

Hi Jdj, nice little quincy x2 compressor, if you ever get that going and anyone needs their tyres pumping up they will know where to come,
nice little project. Hi Atlas ten, I don't have a dividing head yet, finished off the facing tonight and I have 4 nice pieces of metal, tomorrow night I have to
bore the pilot holes for the side plates then make a boring tool for the trunions, I am beginning to wish I had attempting these first and turned the barrel to suit
but we shall see how it goes.

 

[jdj72083]

The x2 actually works lol.

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[jdj72083]

Do you have any idea when my X2 was manufactured?

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[wayne.inspain]

Sorry JDJ I don't know the year. Iam sure you could find what you want to know by searching the net, the serial no.
on the casting may help.

 

[jdj72083]

I have searched, even contacted Quincy and they said they are working on finding out a date. My x2 doesn't have the serial plate like later models have.

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[wayne.inspain]

I pondered how I was going to cut the pilot holes in the side plates and the only solution the made a sizable hole was to use the cnc
capability of my mill. I was reluctant to do this because of the backlash in the lead screws. I messed about trying to measure the backlash
and enabled the backlash compensation in the software I have done this before but only made a bit of difference. I decided to go 5mm under
size to give me a bit of leeway but not too much to bore out later. If all went wrong I could make another plate and do it again.
I wrote the code for a continuous spiral into the work 1mm every revolution
with a 8mm cutter did a dry run, clocked and clamped a plate onto the mill, and with my heart in my mouth pressed run.
I watched go round and all seemed well I let it go round once to scribe the circle then wile it was running gauged the approx diameter
with my vernier with a steady feed rate it started to cut into the plate after the cut got deeper and full of cuttings I tried to keep the cut clear with a neodymium
magnet I salvaged from a hard drive which worked ok but got stuck to the cutter a couple of times, strong magnets, all went well and the piece dropped out.
The hole is not bad, 0.8mm over size but only 0.2mm out of round. I did a video but I cannot upload it, it is just the cutter going round for the last cut and the center dropping out. One more to do, then my intention is to clamp the 2 side plates together on the mill and bore the trunion hole through them both at the same time with a boring tool of some description that I don't yet have.