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Oh bugger


Conner
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1 hour ago, Conner said:

 

Job was done on a Bridgeport copy machine. I suppose it could have seen done on a lathe bolt a right angle plate to the carriage and set up the boring tool in a four jaw. As the casing was too large for a rotating face plate.

 

Yep thats the sort of thing. Adjustable boring bar directly into the head stock makes life a little easier. I'd need a bigger right angled plate (compared to the adjustable thing I have now) and then getting the bearing running true to the lathe centreline would be a PITA but it's doable.

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  • 4 weeks later...

Well finally got back onto building the saw up. Plenty of time for the loctite to cure. Saw starts up on high revs but won’t hold tick over. Hopefully just carb adjustment. The chain finally oils properly so a result there. An I right in my thinking if the saw was pulling air in it would rev higher.

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On 03/10/2021 at 20:07, bmp01 said:

Production machine shop verses Prototype machine shop..... it used to be the natural progression, the top machinists ended up in the prototype shop. 

Bridgeport milling machine would have been perfect for this. Mind you, at a pinch I'd give it a go on the lathe - horizontal milling.

I was in the dev shop ( prototype ) and would have done that on a Bridgeport Interact CNC using the circular pocket program instead on a boring bar .

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Still no explanation of how the wear occurred, was it initially from pulling the saw when it was jammed and subsequently from the outer rotating in the case?
 
A couple of hours in the machine shop would cost nigh on £200 hereabouts

After looking at the wear I suspect either the oil pump failed or no oil causing the chain to nip up or over tightness of the chain. The bearing faces looked evenly worn and although rough the bearing was still free. Prob a case of poor maintenance and set up[emoji31][emoji31]
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