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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...

Thanks Gearman1234

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?"

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...

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.

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...

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...

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...

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.

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...

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

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...

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...

Thanks Diamondjim

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.

Does any body know which standard is used for calcualting and specifying the specific sliding ratio for an external gear pair? I know that this is a ratio of sliding velocity to the rolling velocity and is an indicator of the scoringg and noise generation.

A few factors need to be considered. Water quenching is not recommended for 1144. Oil quenching would not result in a thermal shock and the possibility of cracks will reduce with oil quenching. The safe hardness for 1144 with my experience is about 45-50 HRc. Having said that it is also...

Hello luky 1) I tried with the manual method on AutoCAd and it worked perfectly well. It can tell me exactly how much chamfer , radius etc. is generated by any hob on a gear. Butit is very time consuming. That is why I am working on AUTOLISP. There is program developed by Diamondjim in one of...

Thank you Diamondjim. I am waiting for my 1st AutoLISP programming book to be shipped. I will review all these steps after I get that book.

Diamondjim-- I am requesting this after a long time but I was just wondering if you could explain to me the LISP program which you have written. Is it possible to know how the program is developed? I am learning AutoLISP and would like to develop progrma for my own application based on things...