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    Valued Contributor
    Posts: 60
    Registered: ‎04-15-2010
    Accepted Solution

    Sketch constrains in the frame generator

    228 Views, 16 Replies
    05-21-2012 01:21 AM

    Hi Guys,

    I get these pink points in my sketch for the frame. How do I get rid of them? 

    Right click and delete doesn't work. I get all sorts of errors because of these. 

     

    constrain failure.JPG

    Please use plain text.
    Mentor
    trumpy81
    Posts: 317
    Registered: ‎10-22-2006

    Re: Sketch constrains in the frame generator

    05-21-2012 01:36 AM in reply to: Barvas11

    The pink dots usually mean that there is missing geometry, either a face or an axis misplaced somewhere. It's often difficult to know where they originated from and why the associated geometry is no longer valid.

     

    I see these a lot when modifying older parts.

    Regards
    Andy M
    -------------------------------------------------------------------------------------------
    Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
    Asus X58 Sabertooth, Corsair 12Gig DDR3, AMD Radeon HD6970, Samsung 830 Series 256G SSD, 2x 3TB Seagate, 2x 2TB Hitachi,
    1x 1TB Samsung, 4 x 2TB Seagate in Netgear ReadyNAS NV+, Dual Asus VE278Q Monitors
    Please use plain text.
    *Expert Elite*
    Posts: 21,723
    Registered: ‎04-20-2006

    Re: Sketch constrains in the frame generator

    05-21-2012 05:00 AM in reply to: Barvas11

    Barvas11 wrote:

     How do I get rid of them? 


    Attach skeleton file here.

    RIght click and Break Link.

    Right click and Delete.

    Please mark this response as "Accept as Solution" if it answers your question.
    -----------------------------------------------------------------------------------------
    Autodesk Inventor 2013 Certified Professional
    Autodesk AutoCAD 2013 Certified Professional
    Certified SolidWorks Professional
    Inventor Professional 2013 SP 1.1 Edu 64-bit
    GeForce GTX 560M i7-2670QM @ 2.2GHz 8GB RAM
    http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
    http://www.autodesk.com/edcommunity
    Still waiting for -Draft option on any Rib feature.
    Please use plain text.
    Valued Contributor
    Posts: 60
    Registered: ‎04-15-2010

    Re: Sketch constrains in the frame generator

    05-21-2012 07:14 AM in reply to: Barvas11

    Hi Thanks for your response;

    I cannot find the comand "brake the link"

    Please use plain text.
    *Expert Elite*
    Posts: 21,723
    Registered: ‎04-20-2006

    Re: Sketch constrains in the frame generator

    05-21-2012 09:37 AM in reply to: Barvas11

    Attach your file here.

    Please mark this response as "Accept as Solution" if it answers your question.
    -----------------------------------------------------------------------------------------
    Autodesk Inventor 2013 Certified Professional
    Autodesk AutoCAD 2013 Certified Professional
    Certified SolidWorks Professional
    Inventor Professional 2013 SP 1.1 Edu 64-bit
    GeForce GTX 560M i7-2670QM @ 2.2GHz 8GB RAM
    http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
    http://www.autodesk.com/edcommunity
    Still waiting for -Draft option on any Rib feature.
    Please use plain text.
    Valued Contributor
    Posts: 60
    Registered: ‎04-15-2010

    Re: Sketch constrains in the frame generator

    05-22-2012 03:04 AM in reply to: Barvas11
    Please use plain text.
    Mentor
    trumpy81
    Posts: 317
    Registered: ‎10-22-2006

    Re: Sketch constrains in the frame generator

    05-22-2012 04:17 AM in reply to: Barvas11

    The pink dots appear in sketch 3, the lines in this sketch were projected from sketch 1. A change in sketch 1 can produce these dots as any change will break the relationship between these points (pink dots) and the original geometry from which they were derived.

     

    You may not have made any changes, in which case, the original geometry is at fault (IE: missing constraints, sometimes faces and axis depending on where the geometry came from).

     

    To remove the dots, remove the lines over and around the dots. Then recreate the lines that you removed.

     

    Projecting lines like these often produce problems and in 2013, the problem seems to be a little worse than previous versions.

     

    Why the relationships between these points and the geometry around it breaks is anybody's guess. I really don't see any reason why making small changes to the original geometry could or would break the relationships in this way. They are obviously not adaptive and I think Autodesk need to look at this problem. It's always been a bit of a pain, but it seems to be getting worse.

     

    It is best to fix these types of problems as soon as you spot them, if you don't it might be quite some time before you see them again and then it will be much harder to fix as you would have done a lot more work to your model.

     

     

    Regards
    Andy M
    -------------------------------------------------------------------------------------------
    Autodesk Inventor 2013 Pro SP1.1, Win7 Pro - 64Bit - SP1, Intel i7 960 @ 3.333 GHz
    Asus X58 Sabertooth, Corsair 12Gig DDR3, AMD Radeon HD6970, Samsung 830 Series 256G SSD, 2x 3TB Seagate, 2x 2TB Hitachi,
    1x 1TB Samsung, 4 x 2TB Seagate in Netgear ReadyNAS NV+, Dual Asus VE278Q Monitors
    Please use plain text.
    *Expert Elite*
    mrattray
    Posts: 1,453
    Registered: ‎09-13-2011

    Re: Sketch constrains in the frame generator

    05-22-2012 05:42 AM in reply to: trumpy81

    You can delete the projected geometry if you use the show constraints tool and delete all the constraints (make sure to get the projection constraints) from the pink geometry first.

    Mike (not Matt) Rattray

    Please use plain text.
    *Expert Elite*
    Posts: 21,723
    Registered: ‎04-20-2006

    Re: Sketch constrains in the frame generator

    05-22-2012 05:44 AM in reply to: Barvas11

    Well, this is what I was referring to - but this file acts different than what I expected.

     

    Break Link.png

    Please mark this response as "Accept as Solution" if it answers your question.
    -----------------------------------------------------------------------------------------
    Autodesk Inventor 2013 Certified Professional
    Autodesk AutoCAD 2013 Certified Professional
    Certified SolidWorks Professional
    Inventor Professional 2013 SP 1.1 Edu 64-bit
    GeForce GTX 560M i7-2670QM @ 2.2GHz 8GB RAM
    http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
    http://www.autodesk.com/edcommunity
    Still waiting for -Draft option on any Rib feature.
    Please use plain text.
    *Expert Elite*
    mrattray
    Posts: 1,453
    Registered: ‎09-13-2011

    Re: Sketch constrains in the frame generator

    05-22-2012 05:51 AM in reply to: JDMather

    I tried your file in 2013 (I had it up) and I get the break link option, but it doesn't do anything. It also shows no constraints on the geometry, but I can't delete it. Wierdness.

    Mike (not Matt) Rattray

    Please use plain text.