| The Craftmans Shop > New from Old |
| The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20) |
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| awemawson:
Getting so far with the Curvic Coupling seating nicely, I thought I'd push my luck, and re-install the 90 degree powered tool, which weighs literally twice the weight of the other tools. Well, the answer is, yes, my turret exercise program still runs ok, but you can see the previous symptom of a bit of movement as the coupling goes home. What would you do with an unbalanced car wheel - you'd fix lead weights to balance it - so why not? First need to work out how much by weighing the tools |
| awemawson:
Then we need a wooden mould to pour the lead in. The lead I had lying about had been flashing from a roof, so it had some pitch on it, and the melting was a bit messy producing lots of dross, but we got there, poured the mould and it worked out bang on the right weight :thumbup: Trying the machine with the turret now balanced, bingo the curvic coupling is again seating nicely, so a successful experiment |
| WeldingRod:
That must be one heck of a pocket for that scale! Sent from my SAMSUNG-SM-G891A using Tapatalk |
| awemawson:
We don't do 'small' round here :lol: |
| cnc-it:
It looks like the servo is overshooting?..I've had this on the older Siemens dC drives..it looked just like this symptom. I increased the gain with the proportional gain pot until it settled down. If I'm correct it's pot R125 (x axis) , R225 (Yaxis) , R325 (ZAxis) Kp (n) on the AC drives. The manual says turn the gain up if you have inaccurate positioning. |
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