Define/Modify Sequence : Options and Results

Access: Open this function from one of the following locations:

  • Double-click either an Unassigned Group or Sequence Group in the Validate Holes Pane dialog.

  • Right-click an Unassigned Group in the Validate Holes Pane dialog and select Define Sequence from the popup menu.

  • Right-click an Sequence Group in the Validate Holes Pane dialog and select Modify Sequence from the popup menu.

Define/edit a Hole Sequence.

A Hole Sequence is a set of faces describing a hole.

This enables a Sequence to be defined or modified in the CAD environment in a similar way to that performed in the NC Automated Drill environment.

Required Step 1

Define/modify a sequence. The following parameters are displayed:

Name = Sequence_<n>

The default sequence name - where n is an increasing integer.
If a hole or sequence is selected, the sequence name is displayed. The sequence can be renamed by right-clicking the sequence name (in the dialog listing the sequences) and selecting Rename from the popup menu.

Show only active group

The following dropdown options are available:

Show only active hole

Display the active holeactive hole.

 

Show only active group

Display only the active groupactive group.

 

Show active group + the rest in WF

Display the active group and show everything else in wireframe modeactive group and show everything else in wireframe mode.

 

Show all

Display the active group and show everything else in shaded modeactive group and show everything else in shaded mode.

 

Reset View

Reset the view to the initial display for this step. If you ZPR away from this view, you can return to the view by clicking the Reset View button.

Regular Hole

This is a toggle option that defines the type of hole:

Regular Hole

The hole is a regular hole, not a cooling hole.
This is the default option if none of the faces in the group is already marked as a cooling face.

Cooling Hole

The hole is a cooling hole.
This is the default option if any of the faces in the group is already marked as a cooling face.

 

The Geometrical Data table is displayed showing the geometrical data of the selected hole type (anchor point labels are displayed on one of the holes in the hole group):

See Geometrical Data Table for a detailed explanation of this dialog.

See Hole Anchor Points for a detailed explanation of anchors; a brief description of anchors follows below.

Anchor points are points along the hole axis that are used when defining the parametric drill heights.

Depending on the type of hole, the number of anchor points signifying each segment (A, B, C, D, etc.) may differ. These anchors are named according to their location - A is the closest to DP, then B, etc.

Each anchor point (denoted by a unique letter(s) - unique for each hole) specifies the area from the anchor to the segment above. For example, segment D covers the area from the anchor of segment D up to the anchor of segment C.

Additional anchors define specific points of a hole.

ST

Stock Top: The stock height from the top side.

DP

Drill Point: The upper point of the geometric hole.

Breach

Breach: The highest point at which the hole is surrounded by walls. The Breach refers to the top segment of the hole.

MD

Mid Point: The mid point of length of the hole. This anchor point is used for reference only, as a height for drilling operations, mostly for drilling from both sides.

BT

Bottom Point: The bottom of a hole. This anchor point enables the same sequence to fit more hole variations from the same hole family. In gun drilling for example, intersections will not require special sequences.

SH

SH: The total depth of the hole as required; either as (SH=ST-BT) or as (SH=ST-SB).

SB

Stock Bottom: The stock height from the bottom side.

See Hole Anchor Points for a detailed explanation of anchors.

Any defined sequence is saved to the Hole and Sequence Library.

The Hole and Sequence Library consists of a master ELT file and a set of approximately 150 sequences suggested for handling the holes in the ELT file.

The default sequence library is located in the following folder:

...\ProgramData\Cimatron\Cimatron\2026.0\Data\Sequences

This library is also used in the NC (Subtractive Manufacturing) environment when Automating Drilling Sequences.

Notes:

  • When invoked from the CAD environment, the sequences are saved without the tool definitions in the Cutter Sequence Data Table.

  • Sequences saved in the CAD environment are also applicable in the NC environment.

Some functionality may be dependent on the product package. Contact your Reseller if you require a license.