High Speed Machining

[Metallic]

Good morning,

Can anyone explain what this parameter in the control definition does?

I believe my control does support such a function. Is this specific to Fanuc controllers? What does it do? The help file says it uses G5...does that include things like G05.2 and G05.3 (surface finish controls).

Thanks

[Colin Gilchrist]

3 minutes ago, Metallic said:

Good morning,

Can anyone explain what this parameter in the control definition does?

I believe my control does support such a function. Is this specific to Fanuc controllers? What does it do? The help file says it uses G5...does that include things like G05.2 and G05.3 (surface finish controls).

Thanks

It is simply a "flag" to the Post Processor.

When "unchecked" that predefined variable = 0. When "checked" that predefined variable = 1.

But is then becomes incumbent on the Post Developer to "do something" with that information. For example; you could add "automatic" High-Speed Mode output, based on the condition of that switch. However, you could also build logic into your Post, to ignore that switch, and use Miscellaneous Integers or Real Number (Integer or Decimal values), which are set and passed to the Post, at the Operation Level. (Can change on a per-operation basis, allowing you control over the NC Code output.

I'm not familiar with the Hurco High-Speed Codes, but with the Fanuc Codes, you can turn these modes on/off. You can also output Precision Level and Smoothing Tolerance, depending on your control options. For example; on a Fanuc 31i-B5, you could output "G05.1 Q1 R1-10", where the "R-level" allows you to pick from roughing (1-3), semi-finishing (4-7), and finishing (8-10). The higher numbers equal slower cutting, but better accuracy. The lower numbers equal faster cutting, but less accuracy.

[Metallic]

Yes the Hurco codes output in much the same way...G05.2 Q0.0001 for example is the max deviation for smoothing, G05.3 P25 is a smoothing parameter where "P" can be from 1-100 and results in either slower or faster machining depending on value (smoother motion, smaller number).

Based on the fact that my post uses Misc Integers to define those G05xx values I guess I will leave it off.

 

Anywhooo, thanks!