NX – Avoiding Collisions in Drilling Operations in NX CAM

NX – Avoiding Collisions in Drilling Operations in NX CAM

NX Tip of the Week – April 10, 2015

When using the Drilling operation in NX CAM sometimes you may have issues with the tool colliding with the workpiece when the tool traverses from one hole to another if there is a feature between the two holes. If the feature isn’t especially tall you can simply adjust the “Minimum Clearance” distance to a higher value. However, this adjusts where the tool starts its drilling cycle to a higher value along with the rapid height level causing excessive cycle times. Another way to do this would be to set a value in “Rtrcto” in Cutting Parameters but this could also cause a longer cycle time. A better way to avoid a collision in a Drilling operation is to use “Avoid” when specifying holes. Below are the steps showing an example of avoiding a tall area on a part in a Drilling operation.

1) Notice the path shown collides with the part. Re-specify the holes and select Avoid:


2) Notice in the cue line in the upper left-select a start point. This is the point before you want the higher retract move. Notice the cursor location in the pic:


3) Pick the end point. This is the point where the higher retracts will stop. Notice the cursor location in the pic:


4) Select “Distance” for the retract height:


5) Notice “Rtrcto” in Cutting Parameters is set to None:


6) After regenerating the operation the tool will rapid up to the distance specified between the 2 points you defined:


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