Crankshaft Machining

Answer by Ponkshe - Suggestion to students

Crankshaft Designing & production!


But I would suggest the way how to solve such problems. It would be beneficial to them.

@ Students!

U start with asking following questions to yourself.

What is the function of the product? Answer = Transmit the high torque.
What r the working conditions of the component?
Answer = High temperature, intermittent shocks with long working durations.
What r the properties u desire? Answer = Long life without affecting it’s own dimensions (& it’s supporting parts too) & surface finish!

How to produce on mass scale?
Answer = Naturally Forging? (because if u try welding it would not sustain shocks. if u try casting there would be problems like porosity / cracks etc.
Now what is the answer to your question? U have to search for the material which is not costly answer is steel. Then what would be the size of Crank Shaft (So the size of engine) to sustain in that working conditions. Answer is very large size.
Now what to do to minimize the size & shape? Answer is Alloying with other metals which would enhance the desired properties. Try to reduce friction & Temperature by Oil holes etc.
I would suggest the students to refer Handbook for searching suitable metals which would easily mix with steel!
Now same way they can find out or prepare manufacturing process!
Caution: Note if you want to produce unit quantity the answer would (may) be different!!
(Advantage by using this method: U can remember the properties of various materials & mfg. processes very easily.)

Source: My question in orkut mechanical engineering community

http://www.orkut.co.in/Main#CommMsgs?cmm=1463489&tid=5440860395943730369