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| Building a small and simple dividing head - CNC/Kwackers driven |
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| philf:
Hi Chris, That looks really nice. :thumbup: The worm and wheel look familiar! I'll be interested to see your first pinion cut on it. Phil. |
| cfellows:
Looks great, Chris. I like the er collet chuck idea on the spindle. One of the things I've discovered over the years is that you need to put as much thought into workholding on these things as you do the dividing mechanism. With your arrangement, you don't need to worry so much about your milling cutter fouling the chuck. Chuck |
| Pete.:
Looks nicely proportioned on the machine too Chris. You making a tailstock with the other block? |
| raynerd:
Hi Guys, thanks for the comments. I`ll take some more pics tonight of the final setup as I`ve now fixed up the stepper motor and have it running with the divider but I must admit, I`ve stupidly not considered any way of locking the spindle directly. Other than the holding torque on the stepper, I`ve no way of locking the spindle up and I`m fairly sure I can feel a touch of back lash between the worm and wheel which is transfering into the spindle. I think it is pretty much neglagable, but I would quite like to add some locking mechanism direct to the spindle so that I can keep the tension in one direction and can lock up after each division. The only option I can think of, is a simple thumb screw bearing down right on the top of the block onto the spindle but will it damage the middle of the spindle over time and is there a better solution? Chris |
| Fergus OMore:
Insert a slug of copper into the clamping end of the locking bolt |
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