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cylindricity    
圆柱度; 柱面性

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  • GD T What is the difference between circularity and cylindricity?
    I'm going to present a highly contrived example of a shape which would conform to the circularity constraint, and not cylindricity: You can see how in the front view, every cross section is a perfect circle, but it's clearly not a cylinder Examples and or discussion of when you would choose one over the other are out of scope for this question, but suffice to say that circularity is the less
  • How does Rule-1 guarantee cylindriccity in GD T?
    If I have defined the size tolerance of a shaft, how is the maximum cylindricity tolerance automatically specified by rule-1 of GD amp;T? I mean when a shaft shoulder diameter is defined (e g 33g6)
  • mechanical engineering - Interpreting Positional Tolerance and its . . .
    In this example, we aimed to create a straight shaft, but it ended up curved like a 'C' or a banana While the shaft meets size specifications, its curvature causes part of the axis to exceed the 1 mm positional tolerance zone (only the top and bottom are within it, while the middle is not) Is this acceptable since the entire axis should be within the 1mm positional tolerance zone? If not
  • Part name with different dimensions - Engineering Stack Exchange
    Am I wrong with my assumptions that part names are supposed to be unique? Are you allowed to reuses a part name for a plate if the only thing changing is the plate thickness? The change of thickness for this filler plate is required to match with the change in thickness of the adjacent angle flange thicknesses
  • Dimensions on a STL model - Engineering Stack Exchange
    I have an STL file, all I want is to be able to measure dimension from point A to point B on the model in the file How can I do this? I do have access to Solidworks but don't know if that the best
  • Trying to build a small refrigerator - Engineering Stack Exchange
    I'm learning about HVAC amp; refrigeration To that end, I'm trying to build a little refrigerator Currently, it's not working Below, I describe what I've tried If anybody more knowledgeable th
  • Human verification - Engineering Stack Exchange
    Q A for professionals and students of engineering Bring the best of human thought and AI automation together at your work Learn more
  • materials - Why there is an undercut on the standoff and how it affects . . .
    An undercut at the base of the standoff is to insure that it can be fitted flush with the tapped hole This makes the standoff stronger than if, without an undercut, the standoff cannot be tightened flush The allowable tightening torque should be per the rating for the size of thread even with the undercut An excessive undercut of course can prematurely fail
  • structural analysis - Finding forces and deflection in a simply . . .
    I was putting together a problem set and wanted to check my intuitions on something I know the deflection of a cantilevered beam is $$\\delta = \\frac{FL^3}{3IE}$$ And the formula for a simply suppo
  • Calculate fastener torque based on material strength
    Unfortunately 3D prints can vary in strength since so many parameters contribute (layer height, temperatures, pre-load from thermal differences in layers, grain orientation, infill % and geometry) These mean two different screws on the same print might endure different conditions Another approach might be to figure out the loads you need to bear and go from there to see if the bracket can





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