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how do i draw a curved surface for a rack?

By Uday Sethi on 02 Mar 05:38 2 answers 0 comments

Hi everyone, I am trying to make a solid model for a rack and pinion mechanism for a knife edge valve. I have essentially made the whole model, but the teeth of the rack arent being pocketed properly. I have done all the calculations ( the module for both rack and pinion is 1) and Ive made all the sketches for the rack too. But whenever I pocket the sketch the profile of the pocket isnt the same as that of the sketch. How do I fix this problem? Please tell me if I havent made myself clear ( I am experiencing this error for the first time myself) and I will put pictures of both the sketch and the model up.

Thanks in advance

2 answers

  • Hugo Alanis
    Hugo Alanis over 2 years ago

    Could you send us some photos, and if you can add the 3D model en cat.part to analyzed and tell you which is the mistake on your model.

    Thanks so much for your help,

    Hope this help you to solve your issue,

    Your friend Hugo Alanis.

    If you can add in IGES, or STEP its much better, I have catia V5 Release 17-21

  • Uday  Sethi
    Uday Sethi over 2 years ago

    Hi Hugo,

    Thanks for the help, I actually just increased the 3D accuracy of the model in the perfomance tab under options. Fixed the whole thing for me.

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