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Recent content by gearman1234

  1. gearman1234

    gear noise analysis in a production environment

    We made a measurement of gear noise using a microphone. This sound was recorded using a notebook computer. Then we analysed this noise using softwares available on the internet ( evaluation vesrions available) . These softwares give a frequency spectrum. The frequecy of gear mesh is usually...
  2. gearman1234

    Calculating natural frequency of a shaft

    Thanks Gearman1234
  3. gearman1234

    Calculating natural frequency of a shaft

    Is there any book or internet source available where I can find a formula for finding natural frequency of vibration of a shaft? I found ageneral formula f = sq root of(Stiffness/mass) . The question is "How to calculate the stiffness of a member?"
  4. gearman1234

    Understanding of relation between different gears

    Hello Asong, I think that understanding gear geometry, gear strength, gear manufacturing, cutter design, materials for cutter and gear are essential for analysing the problem at hand. I ws wondering what was the defect in the gear you observed. Was the gear under consideration external or...
  5. gearman1234

    Torque calculator for copper gaskets

    Thanks for the information. I got the confirmation that what I was thinking is right. I have calculated the max.force on washer for that area and I have calculated the torque which will not exceed that preload. I have used 6000 psi (40 MPa) as the yield strength of copper.
  6. gearman1234

    Torque calculator for copper gaskets

    I am lookng to Calculate torque for a gasketed connection on a gerabox with an oil under pressure no more than 8 psi. This connection is a drain plug with plug size M20 and a copper washer to seal the joint. I have the cacualtion formulae for steel connections and bolts but not for copper...
  7. gearman1234

    How to reduce core hardness in cased steels?

    Hello, 1)Just a curiosity. The gear is hardened and spline is kept soft . The spline is also usually supposed to carry the torque and should be case hardened too. 2) 4317 is a high hardenability steel. Carburising the OD and then Induction hardening OD only is the best bet. We use it in one...
  8. gearman1234

    ANSI 14 TOOTH 12/24 B92.1 SPLINE SHAFT

    Please go to the website http://quickgear.bizland.com/id9.html Download the free evaluation version of Qucik Spline 1.5 software. This will calculate the dimensions for you. But the detailed design about all other data like material, hardness, other features etc. will depend on your specific...
  9. gearman1234

    How to calculate centre distance of spur gears?

    I calcualted the CD and it comes to 525.7935 mm The " Diametral Pitch" mentioned is actually the Standard pitch Diameter. DP is used in Imperial Unit Gears.
  10. gearman1234

    Duplicating a Gear...?

    The softwares to measure unknown gear data are very costly. I use the measurement over pins, no. of teeth, OD, Root dia, Base tangent length to arrive at a preliminary data. Using this preliminary data and making assumptions based on this data, I use Klingelnerg gear checker to check the...
  11. gearman1234

    Question about drawing views

    Thank you for the post wgchere. I agree with you.
  12. gearman1234

    Question about drawing views

    I would have called it a first angle projection if a side view of a disc was drawn next to the front view. But the layout is as follows. AT the extreme left, there is the front view of disc ( essentially a circle showing different holes and so on)and a section line at 15 deg to horizontal...
  13. gearman1234

    Question about drawing views

    I received a drawing of a gear from a customer. On the left side he has drawin a front view of a gear. He has taken a section at 15 deg to horizontal and shown that in the middle of sheet. And on the right side he has drawn the back view of the left hand view. He has not named it as such on the...
  14. gearman1234

    Specific sliding of external gear pair

    Thanks Diamondjim
  15. gearman1234

    Specific sliding of external gear pair

    I do not have a standard with me. I searched through the internet and the UTS website gave me the formula mentoned above. But there is no mention of what is a desired value for specific sliding ratio. I am interested to know the range of value within which this ratio should be held.
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