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37092

Re: RF30 ball screws and other cnc questions

lol, Reminds me of me in an auto junkyard. When I lived in OR there was a metal scrap yard in  Medford area where great buys could be made.  But here near
George Dill
Apr 18
#37092
 
37091

Re: RF30 ball screws and other cnc questions

well, since my last post, i have ordered the ballscrews from rotten, including nuts for each, they are 5/8 diameter ones, i hope they are big enough. i did
davidhallsten
Apr 18
#37091
 
37090

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Yes Rick the DTI would, but it shows its deflection over a 1" scale (that quiver you see on the needle) where the laser will be at several feet. If I am
markknx
Apr 18
#37090
 
37089

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Dan, OK, so lifting with a gas strut ultimately was judged unacceptable. Did you play with using a gas strut to push down? Rick From:
Rick - yahoo
Apr 18
#37089
 
37088

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

If the laser shakes too much, then a DTI would shake just as bad. But something slow like a scale would then miss the higher frequency excursions. Rick From:
Rick - yahoo
Apr 18
#37088
 
37087

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Dan, I rarely used my flycutter when manual milling so carried this bias into CNC. Rick ... Dan, I rarely used my flycutter when manual milling so carried this
Rick Sparber
Apr 17
#37087
 
37086

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

About 5 years ago I too tried using a gas strut but took a different approach. You always will want all the backlash taken up that way the cutting forces
Dan Mauch
Apr 17
#37086
 
37085

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Martin, Lock your quill. That will solve the issue while fly cutting. Rick I think the laser may shake to much from vibration. but it don't hurt to try.
markknx
Apr 17
#37085
 
37084

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Why not use a flycutter? I often use a 1-1/2 " flycutter for surfacing some material. Dan Mauch 21th Anniversary in CNC www.camtronics-cnc.com
Dan Mauch
Apr 17
#37084
 
37083

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Martin, It sounds like you solved the fine feed backlash problem but the quill rack and pinion got you. Even if the pinion gear was locked, there is nothing to
Rick Sparber
Apr 17
#37083
 
37082

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Rick- I've had the Z backlash problem as well on my mill. The solution you outlined adds on downward pressure so that the gears are engaged at the most
Martin Kennedy
Apr 17
#37082
 
37081

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Ron, There are many on this site with a lot more knowledge than me. Without them, I couldn’t get very far. “All of us are smarter than any one of us.”
Rick - yahoo
Apr 17
#37081
 
37080

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Mark, I don’t have an analog fish scale but do have a laser. I’ll try placing that on top of the head and look at the distance spot. It will at least tell
Rick - yahoo
Apr 17
#37080
 
37079

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Rick, Hang a fish scale from your ceiling down to the head of the mill. Put it in tension, then when you feed down the load will lighten. Pause at the end of
markknx
Apr 16
#37079
 
37078

Re: new article: Reducing Quill Backlash and Setting Z Axis Gain on

Mark, The reason I said that the cutter pulls down is because I have had end mills pull out of my 5C collet when plunge milling. I have done all of my testing
Rick - yahoo
Apr 16
#37078
 
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