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zli-31-Visitor
1-Visitor
November 11, 2016
Solved

How to disable NORMAL constraint

  • November 11, 2016
  • 4 replies
  • 3240 views

Hi, everyone, I found the Normal constraint in the Creo assembly very annoying, I don't want to use it at all, but seems it is the default Constraint, everytime I choose two surfaces, Normal constraint comes out, so I would like to know if it is possible to disable the Normal constraint, or change the default constraint to Concident?Normal constraint.PNG


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    Best answer by dschenken

    There are is a config option related to the angle for which a normal constraint applies by default which can help, though just picking Coincident first will avoid it.

    see:

    comp_normal_offset_eps

    Specifies the angle epsilon such that if the desired surfaces are equal or less than the epsilon (in degrees), then a normal constraint will be created (default is 10 degrees)

    I expect that when you first add the model you will see that the surfaces start close to normal in the default orientation.

    Perhaps a negative value will disable it?

    4 replies

    D
    dschenken1-VisitorAnswer
    1-Visitor
    November 11, 2016

    There are is a config option related to the angle for which a normal constraint applies by default which can help, though just picking Coincident first will avoid it.

    see:

    comp_normal_offset_eps

    Specifies the angle epsilon such that if the desired surfaces are equal or less than the epsilon (in degrees), then a normal constraint will be created (default is 10 degrees)

    I expect that when you first add the model you will see that the surfaces start close to normal in the default orientation.

    Perhaps a negative value will disable it?

      Z
      zli-31-VisitorAuthor
      1-Visitor
      November 11, 2016

      Hi, dschenken, thanks for your replying, it worked unless the angle is 90 degree.

      M
      mbonka2-Explorer
      2-Explorer
      November 11, 2016

      Hello zhihong li

      l´m almost sure, there is some hidden config.pro option for this demand. Try to search following link with all hidden options.

      Search Pro/ENGINEER config.pro options

      Personally have found nothing useful for you

      Let us know if you will find some config.pro options.

      Regards

      Milan Bonka

      S
      23-Emerald III
      StephenW23-Emerald III
      23-Emerald III
      November 11, 2016

      I haven't seen the normal constraint in years.

        Re: Assembly constraints

      For eliminating the normal constraint from happening by default:

      comp_angle_offset_eps 91

      comp_normal_offset_eps -1

      Add this option to get it to default to coincident instead of distance:

      auto_constr_always_use_offset never

      M
      mbonka2-Explorer
      2-Explorer
      November 11, 2016

      As l discovered, there are 3 config.pro options familiar with this problem.

      1. auto_constr_always_use_offset --- control whether auto constrait should create offsets.

           YES - Auto canstraint always creates offsets

           NO - Auto constraint snaps align or mate if surfaces are within tolerances

           NEVER - Auto constraint never creates offsets

      2. comp_angle_offset_eps --- Specifies the angle epsilon such that if the desired surfaces are equal or greater than the epsilon (in degrees), than angle offset constraint will be created.

      3. comp_normal_offset_eps --- Specifies the angle epsilon such that if the desired surfaces are equal or less than the epsilon (in degrees), than angle offset constraint will be created.

      Regards

      Milan Bonka

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