VCP Feedrate override problem (stepmotor lossing steps) <don't run jobs above 100% override>

[Nigelo]

The "easy to use wizard for fast programming" is also available on Centroid's boards - Its called Intercon

Run from here is also available - Use Run from Main Menu then Search and you can then choose Block Number, Line number or Tool change

Perhaps a read of the manual would assist

[CNCMaryland]

This is part of why I am leaning toward going back to Mach on my next build. They have real easy to use wizards for fast programming and the run from here feature that I use all the time. Langmuir Systems also has run from here feature.

We have a run from here feature. Mach is a step back from Centroid. I'm 100% sure that everyone would agree with that.

[helicop]

This is part of why I am leaning toward going back to Mach on my next build. They have real easy to use wizards for fast programming and the run from here feature that I use all the time. Langmuir Systems also has run from here feature.

We have a run from here feature. Mach is a step back from Centroid. I'm 100% sure that everyone would agree with that.

I agree with that CNCMaryland! Centroid is also more stabil, with good probing features.
But back to the feedrates override problem, is there a solution? Or will it fixed in the next cnc12 release? When I must do more test, please let me know.

[CNCMaryland]

This is part of why I am leaning toward going back to Mach on my next build. They have real easy to use wizards for fast programming and the run from here feature that I use all the time. Langmuir Systems also has run from here feature.

We have a run from here feature. Mach is a step back from Centroid. I'm 100% sure that everyone would agree with that.

I agree with that CNCMaryland! Centroid is also more stabil, with good probing features.
But back to the feedrates override problem, is there a solution? Or will it fixed in the next cnc12 release? When I must do more test, please let me know.

I just wanna see someone run their machine at 150% without problems, then I will believe it works as intended. Just my 2 cents.

[Gary Campbell]

You can always set Parameter 39 to "100"

[helicop]

You can always set Parameter 39 to "100"

That’s a workaround not a solution.

[tblough]

I run my AllIn1DC Bridgeport mill at 200% fairly often. If your machine is rigid, your mechanicals good, and your motors tuned, it will work. Just because I can though, doesn't mean I should.

[cnckeith]

You can always set Parameter 39 to "100"

That’s a workaround not a solution.

the solution is to solve the mechanical issues with the machine. undersized motors, under powered motors (volts and amps not optomized), flexible machine design (not rigid), on the edge gearing, sticky axes, large backlash, lost motion in mechanical system. as previously stated issues reveal themselves when the machine is pushed out of range of good motion. back to the car engine analogy, would you expect an engine to perform properly when revving the engine outside its recommended limits? would you expect the valves to open and close properly at 10,000 rpm even when the mfg states 6,000 rpm is max? or float and back fire or even break?
some machines can do it, since the axis motors are powerful, smooth, sized properly for good mechanical advantage over the axis. Others that are on the edge (barely in control due to undersizing, underpowered, machine flexing, machine vibration, machine stickyness etc. will fail when pushed.

there is no magic software setting that is going to change mechanical design.
if you can't/don't want to improve mechanicals of the machine, the work around solution as stated previously is
adjust G code feedrates in the G code program so the feedrate override knob is at 100% or lower when running the job.

[ShawnM]

125%, 150% and even 200% feed rate override is very doable with a properly designed and built CNC machine. I once ran my router to 200% when I was surfacing the spoil board. I bought a new 2-1/2" surfacing bit and wasn't sure how fast I could push it over my old 1-1/4" surfacing bit. So when I first tried out the larger bit I used the same feed rate as my smaller 1-1/4" bit to start out and then I slowly increased the feed rate while it was cutting to see how fast I could go and then I could edit the G code later with the new feed rate. All three axis ran just fine at 200% but I'd never do this for any other reason. My machine in my garage is an Italian made, Holz-Her industrial CNC router that only has a 3X5 cutting envelope but it weighs more than my car and I retrofit it with Clearpath servos with the proper power supply voltage and current. It's basically bulletproof.

[helicop]

You can always set Parameter 39 to "100"

That’s a workaround not a solution.

the solution is to solve the mechanical issues with the machine. undersized motors, under powered motors (volts and amps not optomized), flexible machine design (not rigid), on the edge gearing, sticky axes, large backlash, lost motion in mechanical system. as previously stated issues reveal themselves when the machine is pushed out of range of good motion. back to the car engine analogy, would you expect an engine to perform properly when revving the engine outside its recommended limits? would you expect the valves to open and close properly at 10,000 rpm even when the mfg states 6,000 rpm is max? or float and back fire or even break?
some machines can do it, since the axis motors are powerful, smooth, sized properly for good mechanical advantage over the axis. Others that are on the edge (barely in control due to undersizing, underpowered, machine flexing, machine vibration, machine stickyness etc. will fail when pushed.

there is no magic software setting that is going to change mechanical design.
if you can't/don't want to improve mechanicals of the machine, the work around solution as stated previously is
adjust G code feedrates in the G code program so the feedrate override knob is at 100% or lower when running the job.

I ask it again, did you test my testfile with your 100% tunned cnc router? Please send a video to show it on 150% feedrate.
Take also a look on the graph I posted.