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Recent content by DeanAllen

  1. DeanAllen

    problem with patterned tolerance of position

    This looks like an example from the AMSE standard. From memory ASME does not let use you the symmetry symbol. It uses position instead. Here I think you need position. You need to be careful as form and position are two different things. Example: The round plate may need a roundness tolerance or...
  2. DeanAllen

    Axis parallel to plane

    Hi gents, I think you misunderstand my comment slightly. The datum should appear on the end of the dimension which indicates the centre or median plane of that feature. I am used to the ASME standard, BS308, BS8888, ISO1101, ISO 8015, envelope rule, differences between the standards as I teach...
  3. DeanAllen

    Aligning center of hole with center of triangluar feature

    You could do this by datuming the 3 faces and splitting the datum evenly. ie: measure the distance from the small face to the longer face 3 times. Put the datum of each on the end of the lengths showing the centreline of each. positional tolerance would be:- A/B-C-D assuming A is the face you...
  4. DeanAllen

    Axis parallel to plane

    This is basically correct. The cylinder dia should be on the drawing. The datum on the end of the cylinder dimension. This then shows the datum as being the centreline of the cylinder. Putting the datum on a centre line is not preferred as potentially it could be difficult to understand how to...
  5. DeanAllen

    GD&T for centreline positioning?

    Looking at Jon Selby's sketch this is not quite right with what you want to do. You no longer use the == signs as the tolerance is sometimes difficult to work out. The face of the plate should be the primary datum, datum A. This means the holes will be square to the face you are drilling into...
  6. DeanAllen

    UG NX Linetypes

    Thanks for the replies gents. I have tried both of these in the past but for various reasons they do not give me exactly what I am after. I will keep trying to see if I can solve these little problems and post back if I do. Many thanks
  7. DeanAllen

    UG NX Linetypes

    Gents, I am currently using NX6 and NX7.5 for different jobs and have 2 questions that so far I am unable to solve. 1, Linetype in draughting. How do you change the linetype scale. For example if the centreline needs more space between lines? 2, I want to show work planes and axis from the...
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