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Machine is not responding to feedrate programmed
- Thread starter ced_will
- Start date
- Replies 9
- Views 1,539
DMF_TomB
Diamond
- Joined
- Dec 13, 2008
- Location
- Rochester, NY, USA
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did you check if G94 or G95 is in effect. often program will state one and not restate the other to put back in effect. reset press usually restates the default g and m codes thats normally set by parameters.
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often a machine has a separate manual book on just parameter adjustments. sometimes maintenance department has it as they dont want operators changing parameters.
red beard
Cast Iron
- Joined
- Apr 1, 2006
- Location
- Grand Rapids, MI USA
Is Dry Run mode activated? That's what it sounds like to me. On most machines there is a toggle button to turn it on and off.
angelw
Diamond
- Joined
- Sep 10, 2010
- Location
- Victoria Australia
Hello ced_will,
G Code System A is the default for a Fanuc Lathe control. Accordingly, unless your machine used G Code System B, or C, G94/G95 will be irrelevant. Try programing G99 before any Feed Move is programmed. Its fairly common practice to include G99 in a Safety Block at the beginning of the program. It contains all G Codes that will place the control in a desired default state, such as cancel TNR Comp, correct unit type (Metric/Imperial) and Feed/Rev to name a few.
As red beard points out, Dry Run being active will give results similar to what you're experiencing. It slows rapids and sets the Feed Rate according to the Feed Rate Override dial.
Regards,
Bill
DMF_TomB
Diamond
- Joined
- Dec 13, 2008
- Location
- Rochester, NY, USA
probably dry run is active.
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i would not assume any cnc is in any particular setting or mode. people change parameters for what ever reason. i have seen machines where programs were changing from ipm to ipr over a dozen times in the program. i have seen cnc lathes in ipm mode. why ? cause last guy who adjusted parameters wanted it that way i assume.
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i would not assume any cnc is in any particular setting or mode. people change parameters for what ever reason. i have seen machines where programs were changing from ipm to ipr over a dozen times in the program. i have seen cnc lathes in ipm mode. why ? cause last guy who adjusted parameters wanted it that way i assume.
angelw
Diamond
- Joined
- Sep 10, 2010
- Location
- Victoria Australia
Then why would you suggest checking G94/G95, when Fanuc Lathe controls are overwhelmingly set to use G Code System A (G98/999 for Feed/Min and Feed/Rev respectively)?
