[EMAIL PROTECTED] wrote: > Hi > Small shop here want to mechanize machining of bicycle wheel – ream. I > want to find better and less expensive way to build CNC type machine with > EMC2. > What is the best way to assemble frame of that machine? > Are there some spindle with chuck as a modular unit to I cam mount it on > the table? > Any ideas? > Any way to find part of large lathe, or grinder that spin large wheel and > it can spin instead bicycle ream? > Thank you > Aram
The traditional way to machine short, large diameter parts, is with a T-Lathe. That has the bed at right angles to the spindle, a large diameter chuck or faceplate, and no tailstock. For example: http://www.youtube.com/watch?v=hwpjQ-P_tfo http://www.zhongyang-engrg.com/catalog/la1892-1.htm http://www.opencarmachinery.com/photos/16170.jpg All of the machines at those links have beds that extend all the way across the spindle, since they want to be able to face a full diameter disk. But for a bicycle rim, the X and Z travels don't have to be very long at all - probably 4" each way would be enough, maybe 8" for Z if you want to be able to handle a range of wheel sizes. But you will need a faceplate that is big enough to hold the wheel. Keep in mind that spindle speeds in RPM will be quite low because of the large work diameter. Regards, John Kasunich ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
