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wa2321
Member

Join Date: Feb 2012
Posts: 7

Addendum Modification Or Profile Shift

03/11/2012 12:33 PM

i have pair of gear which data are as under:-

1) PINION:

  • No. of teeth = 42
  • PCD over wire (wire dia. 4.43mm) = 125.55mm
  • outer Dia or Tip Dia. = 131.85mm
  • pressure angle = 20 degree
  • module = 3

2) GEAR:

  • No. of teeth = 50
  • PCD over wire (wire dia. 4.43mm) = 149.65mm
  • outer Dia or Tip Dia. = 155.65mm
  • pressure angle = 20 degree
  • module = 3

NOTE: distance b/w meshing gear = 137.6mm

now i want to manufacturing these pair of gear as a mass production therefore please suggestion me that "what is amount of profile shift or amount of addendum modification (x1 & x2)..

your kind corporation in this regard is requested,,,,

waheed
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danilorodr
Participant

Join Date: Dec 2011
Posts: 2
#1

Re: Addendum Modification Or Profile Shift

03/11/2012 11:02 PM

Your question isn't perfect clear, please reformulate your question saying exactly what you want to know, you say that you will produce a great quantity of these pair, and asked about the profile or addendum (I saw no link between this question). Both, addendum and deddendum are calculated acording to the module that you defined earlier (module = 3) so the formula to obtain the addendum is: addendum = module and deddendum = 1,167 module. Plz answer to clarify your question, I want to help in this issue. Thx
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nick name
Guru

Join Date: Mar 2007
Location: City of Light
Posts: 3943
Good Answers: 183
#2

Re: Addendum Modification Or Profile Shift

03/12/2012 9:57 AM

In one of you posts which I answered by the way I suggested to send me your mail so that I can send you a full book on gears where you find all answers to your questions. You did not react.

What you ask now is a proof that you should learn more about gears. For mass production you do NOT need to change what you mention in your question but the TOLERANCES VALUES which allow a total interchangeability of the gears.

Those are specified by STANDARDS according to the expected precision class of the gears and also some other factors which you can find in books or standards.

I see that you are not interested to progress but only to pump from others and let them make the work. This is NOT fair.
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