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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)
  • How to interpret general tolerances (e. g. , ISO 2768)
    I am quite new to mechanical engineering, but currently working on a project which I eventually want to sent to a CNC service for machining Many services I found can manufacture to, e g , ISO 2768-m
  • 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
  • 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
  • How to define Knurl on drawing? - Engineering Stack Exchange
    The (European) standard for knurls is DIN 82 The standard includes a proposed drawing representation as well Its intention is to describe hand gripping aid knurls As Ethan48 says, for fitting you need a more precise definition, at least for the outer surface (diameter, cylindricity, runout, etc ) One remark to your design: look for knurling tools on the net, you might need some distance
  • drafting - Difference between Design Dwg. and Mfg. Dwg . . .
    From an Inspection and Test Checklist for flange heaters (the number is the same on both lines): I wonder what the difference between "Design Drawing" (or is it "Drawings"?) and "Manufacturing D
  • drafting - Whats the difference between a dowel pin symbol on a hole . . .
    On some equipment like hydraulic machinery, the pin hole tolerances are fantastically high You disassemble a machine with a 3 4 inch pullbar and then find the stack assembled with dowel pins the size of tiny needle bearing rollers Using a datum symbol makes sense there





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