Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: GRAYHIL on August 20, 2013, 03:23:24 PM

Title: Rotary Table
Post by: GRAYHIL on August 20, 2013, 03:23:24 PM

Hi All
I want my rotary table to act as a pull roller to pull a paper roll through a set ditance.
Is it acceptable to change the motor settings to achive a 1" pull for 1degree dro readout,
I have done the calculations and I need to go from 66.666666 steps for normal 360deg rotation to  2748  for a 2.78" dia and 1" pull

2.78*3.142/360=.02426 for 1 deg (normal)
so 1" is 66.666666/.02426 or 2748 steps with approprate change to speed and accelaration

It seems to move the correct distance but are there any problems with this?

Graham

Title: Re: Rotary Table
Post by: Hood on August 20, 2013, 04:11:57 PM

Set the rotary axis to a linear axis in General Config and you should be fine.
Hood

Title: Re: Rotary Table
Post by: BR549 on August 20, 2013, 07:52:42 PM

Set up as linear drive and then calculate the steps based on the circumference of the roller. Then you can use the axis X or Y directly same as a normal axis. It would just have have an infinite distance.

(;-) TP

Title: Re: Rotary Table
Post by: GRAYHIL on August 21, 2013, 04:43:56 AM

TP & HOOD
Thanks for your advice.
Graham