[Emc-users] xl pulleys

2016-09-18 Thread Gene Heskett
Greetings all; Do any of you know of a pulley maker that can supply a large hub in in a 40 tooth pulley that is also more than an inch wide at the hub? I find that to align a belt on the X drive, that I have to find a pulley with an 8mm bore, but around 2" wide at the hub, because I am going

Re: [Emc-users] Nother math problem

2016-09-18 Thread Gene Heskett
On Sunday 18 September 2016 18:21:08 Chris Albertson wrote: > What you are looking for is a function that can smoothly transform > from a line to an arc while always passing through to given points? > An eclipse could do that as its eccentricity changes. The problem is > the amount of

Re: [Emc-users] Nother math problem

2016-09-18 Thread Chris Albertson
What you are looking for is a function that can smoothly transform from a line to an arc while always passing through to given points? An eclipse could do that as its eccentricity changes. The problem is the amount of computation required. Cheaper to draw both the final and starting lines and

[Emc-users] Nother math problem

2016-09-18 Thread Gene Heskett
Greetings all; I am trying to carve the curve/arc in the toolpost base that replaces the bad compound in this Sheldon. Currently mounted about 3/4" off center so I am basically cutting away anything on the front of the base that a workpiece could hit. I did this in 1/4 size, for TLM, and

Re: [Emc-users] Servo and Mesa pulse encoder/velocity feedback

2016-09-18 Thread Andy Pugh
> On 18 Sep 2016, at 09:46, Frederic RIBLE wrote: > > This Fanuc drive will be in runaway condition if it does not receive a > velocity feedback. > It has an internal analog closed loop Internally it compares the feedback and command voltages. If both signals are generated

Re: [Emc-users] Servo and Mesa pulse encoder/velocity feedback

2016-09-18 Thread Frederic RIBLE
This Fanuc drive will be in runaway condition if it does not receive a velocity feedback. It has an internal analog closed loop to track the velocity command and control the motor rpm. This is why we absolutely need to derive this feedback from the quadrature encoder somewhere. Frederic. On