Extended modules > Advanced Machining > Types of machined features > Stepped hole > Blind Hole Step Parameters
  
Blind Hole Step Parameters
When creating, copying, or modifying a blind hole step, the application displays the BlindH dialog box. The blind hole step parameters are described in the table below.
When using the modifying commands, the existing parameter values are loaded from the model into the dialog box where they can be edited.
Use Show Image to display a graphical representation of the blind hole step. Use Show T&Q to add the tolerance and surface quality options to the dialog box.
Hole Dimensions
Dialog Field
(Keyword)
Type
Label
Description
Drill Dia
(DRILL_DIA)
Toleranced Length
D1
Specifies the diameter of the hole to be drilled. If you have added a tolerance to this parameter through the Creo Elements/Direct Annotation 3D module or by direct specification within the dialog box, it is written into the output file to be transferred to the receiving CAM system (in either ISO or values). See the Description about specifying the Tolerance of a length value for further information.
DrillDepth
(DRILL_DEPTH)
Toleranced Length
T1
Specifies the drilling depth. The depth is defined as the length of the drilled cylinder and does not include the tip of the drill tool.
If you have added a tolerance to this parameter through the Creo Elements/Direct Annotation 3D module or by direct specification within the dialog box, it is written into the output file to be transferred to the receiving CAM system (in either ISO or values). See the Description about specifying the Tolerance of a length value for further information.
Cham Depth
(CHAMFER_DEPTH)
Length
T2
The depth of the chamfer measured in direction of the axis.
Cham.Angle
(CHAMFER_ANGLE)
Angle
The tool tip angle of the sink tool.
Cone Angle
(CONE_ANGLE)
Angle
A1
The tip angle of the drill tool to be used for the drilling operation. A 118 degrees default is used. The following restrictions apply: 0 < A1 <= 180 degrees, that is, you can create a flat blind hole, but there are special commands to do so (simply replace the BLINDHOLE by FLAT_BLINDHOLE in the name of the command).
MeasMode
(MEAS_MODE)
There are two different methods to specify the depth of a step:
Rel: The relative method, the depth is measured from the end of the previous step.
Abs: The absolute method, the depth is measured from the start point.
If a relative depth is specified and the user changes the depth of a previous step the other steps will move.
If an absolute depth is specified, the steps are adjusted if a previous step is changed.
Side Quality
(SIDE_SF_QUAL)
Specifies the surface quality of the side of the drilled hole. See the Description about specifying the Surface Quality for further information.
The remaining options in the dialog box do the following:
Dialog Field
(Keyword)
Description
Show/Hide Image
(IMAGE_SHOWN)
Shows or hides the graphical representation of the machined hole.
Show/Hide Tolerance & Quality
(TOLERANCE_AND_QUALITY)
Shows or hides additional tolerance-related input fields.
As soon as the application has enough data it provides a graphical feedback to outline the size of the feature being defined. This feedback is updated with every new parameter. Normally, feedback is displayed as soon as a face is selected and a diameter is specified.