The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
PK:
--- Quote from: awemawson on August 04, 2018, 05:07:20 PM ---AND have the courage to run it full wack no restraints :ddb:
--- End quote ---
We have a saying at work; There's no avoiding the "Push the red button and trust in Jesus" moment.
Pete.:
--- Quote from: awemawson on August 04, 2018, 05:07:20 PM ---Well I'm CHUFFED - though I say it myself :clap:
This evening I've managed to draw a simple cone in FeatureCAM, post process it with my tweaked and adjusted post processor, upload it to the Sinumerik 820T controller using DNC4U, AND have the courage to run it full wack no restraints :ddb:
Now to be honest first time I'd nobbled the feed rates and spindle speed to very low values and had my hand on the eStop button (as you do !), but then once proved I let it rip, and both the machine and I survived
Being 'constant surface speed' turning and a steep sided cone the chuck didn't half spin at a rate of knots at the smaller end of the cone.
The post processor code still needs breathing on and tidying up, but it's definitely on course.
I still need to master work offsets and tool offsets before I can actually make chips, but before I do that I need to invest in some 25 mm shank index-able tooling as most of my existing stuff is 20 mm.
Now having a 'rear' tool turret and some VDI40 holders that jack the shank to the top of the slot and others that press it down, I need to standardise and make a few decisions. It affects the handedness of the tools and the direction that you spin the chuck , CW or CCW. I need to find a quiet hour to get my head around the variables without the usual interruptions of life.
--- End quote ---
Now that's taking the bull by the horns!
So, is the turret fully operational now then Andrew?
awemawson:
ish !
I don't fully trust it due to previous problems but at the moment it's doing what it's supposed to.
Just by co-incidence (not really !) I have a former ex Beaver service engineer check into one of our holiday cottages this evening with his wife and dog. I really don't want to make this a bus mans holiday for him but no doubt I will be making a full down load of his brain over the next few days ! (any one got any truth drugs !)
This is a nice chap I met first when I bought my Beaver Partsmaster, and the carriers mangled the ball screw by not using the shipping clamps. I'd lost touch with him, but by co-incidence he needed accommodation for a job he was doing locally this week.
WeldingRod:
Ok, I've gotta ask... my sole reference for chuffed-ness come from the British Baking show. My kids are asking; what is chuffed, and why should someone else need to say.it about you?
I'm might be asking too ;-)
Sent from my SAMSUNG-SM-G891A using Tapatalk
Pete W.:
Hi there, Andrew,
I've been following this project and finding it interesting.
I hope that his dog and yours will get along OK. Shall you have to teach his dog how to behave in proximity to sheep?
I had a 'switch it on and it works' moment here yesterday. Very QRP by comparison with your project - a mere 350 milliamps at 12 Volts! I won't go into detail here but will try to recount some of my activity in a new thread. Still, there was that grateful and relieved release of breath that I'm sure you've experienced too!!!
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