![]() This can result in too much or too little compression which can cause the o-ring to fail. Also known as tolerance stacks, it is a mathematical and statistical problem solving method for variation accumulation allowed by the specified dimensions. If the nominal o-ring size is 0.030″, it is easy to see that the tolerance stack-up is nearly half the size of the o-ring. In this example the metal and o-ring dimensions can vary up to 0.012″. Use the TolAnalyst tools to perform worst-case tolerance stack-up analysis on. Illustration 5.5 below shows a situation where the o-ring cross section tolerance is ± 0.003″, the groove diameter tolerance is ± 0.002″, and the bore diameter tolerance is ± 0.001″. DimXpert for assemblies places dimensions and tolerances on assemblies. The combination of these tolerances is the tolerance stack-up. ![]() In any sealing application, the tolerances of all the parts in contact with the o-ring must be considered in order to create an effective seal. What Is a Tolerance Stack Up (1) HLM method This method assumes that an output is the sum of individual contributors.
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![]() Bacteria multiply quickly, leaving a foul film of plaque on your Invisalign and teeth. Invisalign trays are prone to staining and food sticking in them. One of the most common mistakes people make includes eating and drinking while wearing their Invisalign. ![]() Eating or Drinking While Wearing Aligners Keep reading to learn about eight common Invisalign mistakes new users should remember to avoid. Invisalign professionals in Tampa know how to ensure your Invisalign’s safety. However, new users should be aware of detrimental Invisalign mistakes to ensure they get the best results. Their convenience and benefits make them a top choice for Tampa patients. Invisalign is a dental alignment method that has only grown in popularity over the years. |
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