Pecking applies to Deep Hole, Chip Break, and Tap operations. FeatureCAM supports four styles of pecking. These styles are listed in the post processor. Three different attributes control the pecking and they are used differently depending on the style of pecking. FeatureCAM checks the pecking type in the currently loaded post processor to duplicate canned cycles when simulating toolpaths. Set these attributes separately for Drilling and Tapping operations:
The peck style is specified in the CNC file, and determines which of the tool's pecking depth values are used to calculate the pecking depth values for the operation:
Fixed Steps
The NC code specifies one depth (First peck) and all the steps peck at that depth. Second peck and Minimum peck have no effect in this case.
Two Steps
The NC code specifies two depths. The first step pecks at the first depth (First peck) and all the subsequent steps peck at the second depth (Second peck). Minimum peck has no effect in this case.
Value Reduction
The NC code specifies the first depth (First peck), a reducing value (First peck - Second peck), and a minimum depth (Minimum peck). The first step pecks at the first depth. Each subsequent step is reduced by the reducing value until the minimum depth is reached.
Factor Reduction
The NC code specifies the first depth (First peck), a reducing factor (Second peck/First peck), and a minimum depth (Minimum peck). The first step pecks at the first depth. Each subsequent step is reduced by the reducing factor until the minimum depth is reached.