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Recent content by julio

  1. julio

    Aluminium allowable surface pressure

    Could someone give me datas on allowable surface pressure of aluminium under pressure of a tightened screw The material is die-cast aluminium ref : Al-Si8 Cu3Fe according ISO3522 A380.0 / SC84A according to ASTM B85
  2. julio

    Aluminium mating resistance

    Could someone give me datas on mating resistance of aluminium under pressure of a tightened screw The material is die-cast aluminium ref : Al-Si8 Cu3Fe according ISO3522 A380.0 / SC84A according to ASTM B85
  3. julio

    pressure angle question

    Working as gear expert in starters applications I confirm the answer of diamondjim :IF THE MODULE IS THE SAME, THE PRESSURE ANGLE MUST BE THE SAME BUT : the real indispensable and compulsory condition is to have THE SAME BASE PITCH pb= PI*m*cos(alfa) SO: you can have different modules AND...
  4. julio

    Making spare gears from existing: how to spec

    You also need to give the tooth thickness :this will allow the gear manufacturer to determine the addendum modification coefficient in order to cut a new one. To get this data you need to measure the dimension on K teeth (number K depends on DP & number of teeth) If you measure the dimension on...
  5. julio

    Why Base dia is > minor dia in Gears?

    OK with diamondjin about SAP. Anyway, involved in design gear calculations for automotive equipment (starter pinions)one of the first concern is to make smaller everytime ! So when I design a new set of gears I try to have a minimum root diameter : I need to check by calculation there is no root...
  6. julio

    save bug help....

    currently I'm working on a drawing for my scenior engineering design...I got to a point where everytime I try to save, pro_engineer just crashes and I'm unable to reopen the file...the single file is made of 34 sub files..I deleted the sub_file #34 and I was able to retrieve and open the...

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