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Constant Velocity in Mach4

Constant Velocity can improve cut quality, especially on gantry style machines like routers and plasma tables.

Constant Velocity (CV) is more of a Theoretical calculation instead of an exact adjustment and will differ between machines and programs. It will take adjustments and tests with data collection of how the change affects things to get it set for your needs. There are some helpful notes to get you going in the right direction and can be found in the attached document (NOTE: this is not a MachMotion document, but a tool we have found helpful. However, we are not able to validate all the information it contains.) The document is for Mach 3, but the same concept applies. 

- See primarily the {Constant Velocity “CV”} section, the {CV Dist Tolerance_____Units..} section, and the {Stop CV on angles > _____Degrees} section.

For Mach4, do the following:

  1. Disable the control
  2. Pull down Configure | Plugins | MachMotion -
  3. Search for Constant, or open Modes | Constant Velocity

access constant velocity settings.png

available parameters.png

A common solution is to try lowering the CV Dist Tolerance. If that is not giving the needed results, try the Stop CV setting by increasing that number.