Which command is used for peck drilling in CNC milling?

Peck drilling is a technique used in CNC programming that allows for deep holes to be drilled in multiple increments or "pecks" rather than in one continuous motion. This method helps to manage chip removal and reduces the risk of drill bit breakage or overheating, especially when drilling into tough materials or achieving deeper holes.

The command specifically utilized for peck drilling in CNC milling is G83. This G-code command indicates to the machine that it should perform a peck drilling cycle, where it enters the material to a specified depth incrementally, allowing for the efficient removal of chips and better control over the drilling process. The command typically requires additional parameters such as the feed rate and the total depth of the hole, enabling precise control over the drilling operation.

The other options listed serve different functions within CNC programming. M9 is used to turn off the coolant, G54 is a work coordinate system command that defines the work offset, and G41 is used for cutter compensation to the left of the programmed path. Understanding these distinctions enhances a CNC operator's ability to choose the appropriate commands for specific machining tasks, thereby optimizing the machining process.