Bridgeport Torq-Cut TC4G Retrofit

Have you looked at the output of the PID with halscope?
Do the numbers coming out look reasonable compared to normal command signals to the VFD?

Played around with the orient some more and I have not found a way to keep the spindle from oscillating once oriented, even with the new minimal configuration.

I have settled on using the is-oriented signals which once oriented the commands stop. This keeps the spindle from oscillating and achieves the target by +- 0.2°. Then when the tool release cylinder is activated it locks the spindle anyway so everything should work out fine I would think. Need to purchase some tool holders to test with as I do not have any at this moment.

I will reassemble my config over the next couple days and test again.

andypugh wrote: Have you looked at the output of the PID with halscope?
Do the numbers coming out look reasonable compared to normal command signals to the VFD?

I have not yet, just used halshow and monitored the positions, command, feedback, and error. I got the error down pretty well by not using so much P and still achieving decent orientation time.

Main reason for not using halscope is that I forgot how to use it... Need to brush up on it again.

chopper79 wrote: Played around with the orient some more and I have not found a way to keep the spindle from oscillating once oriented, even with the new minimal configuration

Did you try deadband at any point?

andypugh wrote:

chopper79 wrote: Played around with the orient some more and I have not found a way to keep the spindle from oscillating once oriented, even with the new minimal configuration

Did you try deadband at any point?

I have not.... I will give it a try though. Thank you

Tried to add some deadband into the orient PID, but this did not help any. As of right now I am going to move on with other aspects of the machine and will come back to this later. Adding to my list of little things to work on. Nice thing is the main functionality is done and the machine is working rather well.

Need to do the following soon before the next step:

* Adjust spindle encoder pulley (Not running as true as I would like)
* Connect last air line to spindle
* Align tool changer (Purchasing tools to align this)
* Finish installing some panels on the Z axis

Will update as I progress.