ANSI/ASME BM, Design of Transmission Shafting by faguirre_ in Types > School Work. Dear Friends: would you mind sharing ASME BM – ? thank you in advance. Code for Design of Transmission Shafting () [see BM below] Fuel Gas Piping (February ) was replaced by ANSI/NFPA Z
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Show 40 post s from this thread on one page Page 3 of 4 First 1 2 3 4 Last Jump to page: Originally posted by LET Originally xnsi by designer Alas I’ve never written a book, or got strings of letters after my name and it’s too late now Originally posted by johngateley Each letter costs about 20 quid every year: Shaft design as can be seen by some of the above comments is a complex area and one that should not be entered into lightly. Safety should be high on peoples priorities as pulley shafts breaking are a dangerous thing to happen.
As a designer of said pulley shafts I prefer to work from first principles on shaft design, however, various eminent bodies have done a lot of work on this subject and come up with a set of standards that can aid the average pulley shaft designer.
What people must realise is that it is no use whatsoever in calculating many pulley shafts to 3 everso-clever rocket science decimal places, and basing the calculations on tensions that are based, for example, on ISO static type b1061.m, which in the real world are about as accurate as me trying to play darts.
ANSI ASME B106.1 1985
You have to know when dynamics plays a part. For this and other reasons I wrote the paper on “Golden Rules” for conveyor design which was persented at Belcon In this paper I demonstrated via case studies, pulleys especially LT ones have been known to fail due to dynamics being ignored. I also indicated that if you can’t even spell dynamics, what precautionary factors can be used. As conveyor pulley designers we have to assume and we all know what that stands for that the conveyor designers have done there job correctly and what figures we are given to design with are correct.
If the conveyor designers give us wrong numbers then we calculate a wrong shaft size — simple. With respect to dynamic or static calculations for determining belt tensions I leave that upto more skilled people than I to determine.
I am aware that there are a number of commercial software programs out that do allow for said dynamic effects.
Item Detail – ANSI/AGMA E08 (reaffirmed March )
I agree that more often than not when there is a ahsi failure and a root cause analysis is properly undertaken then often it is anai overlooked dynamic effects that are the cause.
Its not just pulleys that suffer from mis-information either. Here they got to realise why they had lost conveyor structures as their mechanical counterparts had for example, never even heard of the expression “aborted start” or anything else dynamic for that matter, and they normally get bum information to work from.
Too many overnight experts in this field I fear. I concur as well. My colleagues and I joke about how everyone you talk to seems to be the resident expert.
HA You saw how I annsi the first person to say that I wasn’t smart enough to figure it out. Oh and by the way, I hope you guys have someone ansu working with you with a good attitude that you can share this knowledge. Myself, I fall victom to these modern formulas that bypass the first principles – Even my old inherited Mathews conveyor papers don’t do all the teaching.
Min. Shaft Size for Drive Pulley
And yes, I forgot all about the free body diagram approach. It must be a dieing trade. One of these days I am going to ask you guys about how to calculate L10 life of bearings.
Hi, I looked at the shaft design comments above. I am currently doing an assignment for uni where we have to design an intermediate shaft situated between a belt drive and chain drive which is part of an air compressor qnsi system.
I hope that makes sense. Basically, we have been shown to follow the way to design the shaft as was mentioned above, calculating loads, calculating bending moments, torsion, choosing material on that, etc, etc.
Then someone only mentioned ISO keyway. I’m now up to the part in my assignment where I am to determine the required dimensions for appropriate keys and keyways in the intermediate shaft for the large pulley and small sprocket.
Can any one help with how to design keys and keyways? I also b1106.1m to design a suitable bearing pedestal the shaft has two deep groove ball bearings on it that is to be made by sand casting. I’m also quite clueless here. If anyone could help with comments, or websites, or where I can find useful information about what I’m mentioned, that would be greatly appreciated. The time now is