You can create many different types of drilling sequences by
selecting the holes for drilling and configuring the drill depth
Configure Hole Sets
• Selecting Holes
• Depth Options
– Thru All
• Countersink Drilling
– Start Surface
– Countersink Diameter
– Auto Chamfer
Configuring Hole Sets
Figure 3 – Countersink Drilling
• When creating drilling sequences, you need to configure the hole sets for
drilling. This involves specifying a number of options.
• Selecting holes – You can select the holes to drill using any combination of
the following methods.
– Axes – Specify holes by selecting individual hole axes.
– Points – Specify drill locations by selecting datum points or reading in a
file with datum point coordinates.
– Diameters – Specify holes by selecting diameter value(s).
– Surfaces – Specify holes by selecting surfaces of the reference part or
– Parameters – Select holes with a certain parameter value.
– Groups – Select predefined drill groups. You can define groups of holes
at setup time for later use in Holemaking NC sequences. This simplifies
later hole selection.
• Depth options – You need to configure depth options as part of the hole set
configuration process. You can configure many different depth options.
Module 21 | Page 4 © 2012 PTC
For PTC Internal Use Only
– Blind – Drill from the start surface (or Z-height) to specified depth.
Specify the start and end surfaces (by either selecting a surface or
typing a Z-depth).
– Auto – Depth of drilling is determined automatically, by referencing
– Thru All – Drill a through hole from the retract surface all the way through
the workpiece(s) or reference part(s) that the hole intersects.
– The Tool Depth option buttons, Shoulder and Tip, available for blind
and auto drilling, determine whether the drilling depth references the
shoulder or the tip of the tool.
• Countersink Drilling – A number of specific options enable you to configure
countersink drilling cycles.
– The depth for countersink drilling is defined by the start surface and
the countersink diameter value, specified at the time of configuring the
– The countersink diameter is the final diameter of the hole after drilling.
This diameter is measured on the start surface.
– Auto Chamfer – Instead of typing a countersink diameter, you can
specify that Creo Parametric automatically finds all the applicable
chamfers and makes the necessary calculations.