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I take no responsibility for the things that happen to yourself or your equipment as a result of your actions. The following information is provided as a record of my own experiences and nothing more.
Showing posts with label tolerances. Show all posts
Showing posts with label tolerances. Show all posts

Monday, September 15, 2008

Chucks CNC Rebuild: Part 1


Well I finally have my machine rebuilt and I'm pretty happy with the results. So far I've replaced the MDF x-axis supports with oak and shortened the z-axis to hopefully help reduce some vibration problems(It was too tall anyways). I've also decided I like lovejoy couplings better than my direct coupling I used before. I'll have to do some research into power transmission and see if it really makes much difference. If anyone already knows then please leave a comment, I'd love to hear some opinions. I also added some aluminum adjustment blocks for the bearing slides. Using a cheap indicator dial I was able to adjust either end of the lead rod within 0.001in which was something I was previously unable to do. I was thrilled, then I remembered the bearing slides flex a little so I measured without changing my setup and you know what it was?.04in difference!! Keep in mind this is with respect to a level board clamped to my table which I'm fairly certain isn't 100% flat. Regardless that will have to go. I plan on changing my bearing slides from 1/2in to 3/4in. I'll do that next along with all new oak parts for the x and z carriages. Despite my disappointment This is a big improvement on the rigidity and adjustability front. I should be able to handle some higher cutting speeds. So whats next? I'm gonna make some stuff. Namely some new parts over the next who knows how long. I have a small laundry list of upgrades for the future:
  1. A new QUIETER spindle that can hold 1/4in bits
  2. emc2(I use TurboCNC now)
  3. a vacuum setup instead of just blowing air
  4. 3/4in x-axis bearing slides
  5. oak z-axis parts(I already designed these in CAMBAM)
  6. new, more rigid y-axis