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Sjoerd_Repping6-Contributor
6-Contributor
November 7, 2024
Question

Define Start and End Point NC sequence CREO 9.0.9.0

  • November 7, 2024
  • 2 replies
  • 725 views

When creating an NC sequence (Surface Milling), users can more or less control the Start Point of this sequence by changing the [Cut Angle]  under [Define Cut].

Changing the angle from 0 degrees to 180 degrees, changes the Start Point and cutting direction into the opposite direction.

Sjoerd_Repping_0-1730969085363.png

The created start point is ad random within the set boundaries (Cut Angle), so with a new sequence the Start Point could be different.

 

I know there is an option to define a new Start Point, but it immediately goes to the initial Start Point of the sequence.

So X1,Y1,Z1 (A) is the initial Start Point.

A new Start Point, X0,Y0,Z0 (N) will be defined.

The sequence starts at N and then goes to A.

This is not what I want.

It is possible to start the sequence from Point N without going to Point A?

 

The main goal is to have the same Start Point (lower left bottom corner for example) for every NC sequence.

 

Thanks

2 replies

Catalina
CatalinaCommunity Manager
Community Moderator
November 12, 2024

Hi @Sjoerd_Repping 

Thank you for your question. 

Your post appears well documented but has not yet received any response. I am replying to raise awareness. Hopefully, another community member will be able to help.

 Also, feel free to add any additional information you think might be relevant. 

 

Best regards,

Catalina | PTC Community Moderator
K
KenFarley21-Topaz II
21-Topaz II
November 19, 2024

Hey Sjoerd, fancy meeting you here...

For this type of sequence you really can't specify a start point and have the paths calculated from there. That kind of thing works for things like volume milling, but not for the Surface Milling ones, as far as I know.

You could try to Customize the surface milling sequence. It will let you pick sections of the generated path to follow and you can add retracts, etc. But as far as specifying a specific point to start from, the best I can do is get close.

You can also try using other angles, like 30 degrees, or 45 degrees and see where the start point is calculated. I've machined things with 85 degrees instead of 90 because it caused the paths to start at a better place for me, based on the part contour, etc.

I've also used Custom Trajectory paths to "clear out" the areas that might cause me trouble before doing the surface milling.

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