Agreed, it generally isn't much different working in US vs metric, you just have to make sure ALL of your units always jive. (and I don't think you have to use slugs) You can still have the same problems in metric, but there those mistakes often only results in a decimal point miss placement, but it doesn't make the result any less wrong. So it is a very good idea to write out all your units used as you go, to help prevent these mistakes.
Also it isn't always easy to gather all of the pertinent significant variables, such as the motor rotor inertia, screw's rotating inertia, table mass (plus theoretical max table load) plus all the related frictions (which may not be insignificant), and I don't have any knowledge of the electrical inefficiencies of the servo or stepper motor. Step testing sounds the more logical way to come to an accurate conclusion. Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: Bari <bari00...@gmail.com> Sent: Thursday, July 23, 2020 10:54 AM To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Calculating table acceleration. Was: Need help with Bostomatic BD18-2 to linuxcnc [EXTERNAL EMAIL] Be sure links are safe. It's really not a big deal. Engineering and science is full of math operations that you have to jump to all the time. If it is too difficult find someone else that is not a complainer to help you. On 7/23/20 12:34 AM, Chris Albertson wrote: > Why on Earth do people still use US units? OK if your final result must > be expressed that way, but do the math in metric then convert at the end. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
