Create a Countersinking Operation

This task shows how to insert a Countersinking operation in the program.

To create the operation you must define:

  • the tool that will be used
Open the HoleMakingOperations.CATPart document, then select the desired Machining workbench from the Start menu.  

Make the Manufacturing Program current in the specification tree.
1. Select Countersinking .

A Countersinking entity along with a default tool is added to the program.

The Countersinking dialog box appears directly at the Geometry tab page .

2. Select the red hole depth representation then select hole geometry in the 3D window.
Just double click to end your selections.
3. If needed, you can invert the tool axis direction by selecting the axis representation in the sensitive icon.
4. Select the Strategy tab page to specify the following machining parameters:
  • Approach clearance
  • Depth mode: by distance
    The depth value used is the one specified in the Geometry tab page.
  • Dwell
  • Compensation number depending on those available on the tool
  • Compensation application mode.

The other parameters are optional in this case.
  5. A tool is proposed by default when you want to create a machining operation. 

If the proposed tool is not suitable, just select the Tool tab page to specify the tool you want to use. For more information, please refer to Edit the Tool of an Operation.

Countersinks, Drills, Multi-diameter Drills, Spot Drills, Center Drills, and Two Sides Chamfering tools are the recommended tools for Countersinking. Conical Mills and Boring Bars can also be used.
6. Select the Feeds and Speeds tab page to specify the feedrates and spindle speeds for the operation.

Note that in the toolpath represented in the strategy page, tool motion is at:

  • Motion at machining feedrate from 1 to 2
  • Dwell for specified duration
  • Increment at finishing feedrate from 2 to 3
  • Retract at retract feedrate from 3 to 4.
7. If you want to specify approach and retract motion for the operation, select the Macros tab page to specify the desired transition paths. The general procedure for this is described in Define Macros of an Axial Machining Operation.
  8. Before accepting the operation, you should check its validity by replaying the tool path.
9. Click OK to create the operation.
Example of output

If your PP table is customized with the following statement for Countersinking operations:

CYCLE/CSINK, %MFG_TOTAL_DEPTH, %MFG_FEED_MACH_VALUE, &MFG_FEED_UNIT,
             %MFG_CLEAR_TIP, DWELL, %MFG_DWELL_REVOL

A typical NC data output is as follows:

CYCLE/CSINK, 25.000000, 500.000000, MMPM, 5.000000, DWELL, 3

You can use Edit Cycle to edit or choose output syntaxes. For more information please refer to Editing Cycle Syntaxes in Axial Machining Operations.

The parameters available for PP word syntaxes for this type of operation are described in the NC_COUNTERSINKING section of the Manufacturing Infrastructure User's Guide.