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« on: September 27, 2016, 03:56:14 PM »
Well, I think I have a way to make the peck drill cycle work properly on the first and all proceeding drill cycles.
The problem I’ve been fighting is definitely related to the machines “Velocity Mode” when the job starts. If the mode is set to “Constant Velocity”, G64, the first peck drill cycle will not work properly and will jam the drill bit down to the final hole depth on each peck retract cycle. After the first hole, all following peck drill operations will work properly.
I’ve found that if I explicitly put Mach into “Exact Stop” velocity mode, either by including the G61 code in Mach’s initialize string or by including G61 in the jobs G Code file header, all the peck drill cycles work properly, including the first. If I omit the G61 from the initialize string AND the job G Code header, the first peck drill cycle fails.
So, to be safe (hopefully), I have included G61 in Mach’s initialize string AND will include it in the header of all my CamBam generated G Code files.
Thanks for all the input and suggestions: