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Re: [atlas_craftsman] Re: lathe program update

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  • Rick Sparber
    I want to maximize spring only to stress the program. Best case I want no spring. if you are trying to make one light finish cut after making a heavy roughing
    Message 1 of 3 , Jun 24, 2013
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      I want to maximize spring only to stress the program. Best case I want no spring.

      if you are trying to make one light finish cut after making a heavy roughing cut, it is possible that the actual cut will blow past your goal due to released spring. The program detects this situation and corrects.

      Rick Sparber
      rgsparber@...
      my web site: http://rick.sparber.org



      -----Original Message-----
      From: dmbanwarth@...
      To: atlas_craftsman
      Sent: Mon, Jun 24, 2013 8:04 am
      Subject: [atlas_craftsman] Re: lathe program update

      Rick,
      Why would it be good to "maximize spring"? I don't understand that part.
      thanks
      Dave
      
      
      --- In atlas_craftsman@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote: > > Since publishing the first version of my lathe program, I have found a few > bugs, a few situations that were not handled well by the software, and found > that my lathe's cross slide was not snug. So here are my latest results. > > > > In all cases I was turning aluminum at 100 SFM with cutting fluid. I use HSS > for both OD and ID. My boring bar is ½" in diameter and cantilevered 4.5" to > maximize spring. My worst case error is +/- .002" for this small sample. I > have turned a lot of diameters and had similar results. I just didn't > document them. > > > > The user inputs the goal and initial diameters. The program displays the > required dial positions to move the cutter during the turning process. > Periodically it asks for measurements. > > > > ID/OD Goal Final Error > > OD .900 .902 .002 > > OD .600 .5995 -.0005 > > OD .250 .251 .001 > > OD .800 .8015 .0015 > > OD .600 .600 0 > > > > ID 1.200 1.200 0 > > ID 1.400 1.4005 .0005 > > ID 1.500 1.4995 -.0005 > > ID 1.800 1.8020 .002 > > ID 1.842 1.8435 .0015 > > > > I use a digital caliper to measure OD. For ID I use a telescoping T gage. > The gage is first put into the bore at a slight angle. It is then tightened. > Then the gage is straightened out in the bore which causes it to compress. > Then it is removed and measured with the digital caliper. > > > > The updated article can be found at > > > > http://rick.sparber.org/LAT.pdf > > > > If you own a TI-83 Plus with associated PC cable and wish a copy of the > program, please contact me directly. > > > > Your comments and questions are welcome. All of us are smarter than any one > of us. > > > > For the full index of my articles, see rick.sparber.org. > > > > Rick > ------------------------------------ TO UNSUBSCRIBE FROM THE LIST: You do this yourself by sending a message to: atlas_craftsman-unsubscribe@yahoogroups.com Atlas-Craftsman Projects list is at http://groups.yahoo.com/group/atlas_craftsman_projects/ To see or edit your personal settings, view the photos, files or links http://groups.yahoo.com/group/atlas_craftsman/ The Atlas-Craftsman Wiki is at http://pico-systems.com/cgi-bin/Atlas-wiki/Atlas.cgi Please submit things you think will be useful to Jon Elson at mailto://elson@...! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/atlas_craftsman/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/atlas_craftsman/join (Yahoo! ID required) <*> To change settings via email: atlas_craftsman-digest@yahoogroups.com atlas_craftsman-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: atlas_craftsman-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
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