Yishin Li wrote: > > > The reason that I have not deny this comment is because we do not > have a platform to verify this with our USB/FPGA control board. > OK, good, I couldn't imagine a fundamental reason why it shouldn't be compatible. > We are thinking of setup a platform to verify Rigid Tapping, and need > advice for selecting spindle. > Here are 3 options, which one should we better choose? > 1. Inner Motor Spindle > 2. Belt Spindle with Servo Motor > 3. Customized tool holder with Servo Motor It really doesn't matter. The only place it becomes a problem is if the spindle reversal is so quick that the linear axis cannot stay in sync. A VFD can be programmed to limit the rate at which the spindle speed can change, or a filter such as the HAL limit component can be put in the spindle speed command to control the rate of reversal. All you need is an encoder with index on the spindle.
Jon ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
