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Spur Gear Design 1 - How gears work 

PDW Creative
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How to design interacting or meshing gears of different diameters, identify which characteristic controls the gear ratio and why the module is important. The relationship between addendum and dedendum in terms of clearance is also discussed.
This video details characteristics of gear design including the top land, face, flank, bottom land, gear tooth profile, pitch circle, circular pitch, dedendum, addendum, whole depth, addendum circle, clearance circle, root circle, base circle, pressure angle, line of action and angle of interaction.

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23 май 2020

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Комментарии : 45   
@irondan357
@irondan357 2 года назад
I'm not quite sure how to fully convey the extent to which this series of vids saved my ass
@PDWCreative
@PDWCreative 2 года назад
I’m glad to help. It’s good to know it’s useful. It helps in making more
@absolute304
@absolute304 2 года назад
Simple, Elegant and efficient explanation; clear and concise visuals !
@kevinli2574
@kevinli2574 2 года назад
Great video to explain the basics. Bear in mind that some parameters and relations used in this video are for "standard" gears. In some industries, there can be heavily customized gear designs (although those designs may not be optimal).
@PDWCreative
@PDWCreative 2 года назад
I think the basics are fine for this video. I’ll try some of the other types in future videos
@mohamedshinaishin2822
@mohamedshinaishin2822 3 года назад
Helps a lot indeed, thanks💯👍
@mh07.konkan
@mh07.konkan 3 года назад
Great explanation 👍 Love from India
@ramkumarr9346
@ramkumarr9346 4 года назад
Nice video. Keep uploading more videos..
@yatsing1121
@yatsing1121 3 года назад
It helps a lot, thanks
@shackled1502
@shackled1502 Год назад
amazing video, thank you
@victorhugomoransoria6444
@victorhugomoransoria6444 2 года назад
Thank you a lot.
@zesegatto
@zesegatto 2 года назад
2:27 Is module and addendum the same thing? I've seen module is used instead of Diametral Pitch for milimeter gears. It's equal to Pitch Diameter (in mm) divided by the number of teeth. Addendum is the radial distance from the pitch cicle to the top of the tooth. It's equal to 1/Diametral Pitch. Am I wrong?
@moto_dras
@moto_dras Год назад
Hi there, loving this, great explanation! But I seem to have got stuck on calculating the base circle. The equation needs the angle interaction, but that is calculated by using the base circle… Do i just choose a number between 15 and 25 degrees?
@PDWCreative
@PDWCreative Год назад
Try different angles to find the best fit for you needs
@Alzexza
@Alzexza Год назад
How does one calculate Alpha or is that a selected value?
@joseantoniolopez3113
@joseantoniolopez3113 3 года назад
thanks
@jacobeason1363
@jacobeason1363 3 года назад
When you calculate the module from Pi and the circular pitch do you use radians?
@PDWCreative
@PDWCreative 3 года назад
You need to base the module and number of teeth on the design requirement. So consider your gear ratio, size constraints and whats practical for the design problem your attempting to solve.
@jackroom1261
@jackroom1261 3 года назад
So essentially to work out the overall diameter and size of a wheel (the addendum circle) just do the pitch diameter + 2 * module ? Great video btw
@PDWCreative
@PDWCreative 3 года назад
Yes. Just remember the two gears intersect at the pitch circle so when calculating where to place the next gear they should connect. The overall diameter is useful to know for assembly to make sure it doesn't clash with other parts
@jackroom1261
@jackroom1261 3 года назад
@@PDWCreative thank you, most helpful thing I’ve found online on the matter!
@diasakimbay4023
@diasakimbay4023 Год назад
Is there an explanation for ring gear? Since it has reversed teeth relative to the planet gear. Btw, this video is very helpful!
@PDWCreative
@PDWCreative Год назад
It’s on my list of videos to make
@rbffr
@rbffr 2 года назад
When pressure angle is 20 then maximum number of teeth is 41. Above 41 the base circle falls below dededendum circle. can you tell me how gears with large number of teeths are made. Are they involute or any thing else.
@PDWCreative
@PDWCreative 2 года назад
Try a different pressure angle and module combination. There are lots of different tooth profile types. Involute is one of the more common
@stephenchong2395
@stephenchong2395 7 месяцев назад
Do you write a book, I have great interest to buy one!
@thriehands9438
@thriehands9438 2 года назад
Only thing I don’t get is the BASE CIRCLE - Pitch Circle x cos. So if the Pitch Circle 10 and cos 20 calculation is 10 x 20 = 200??
@king_james_official
@king_james_official Год назад
10 * cos(20) = 10 * 0,4 = 4
@pipaliyamahir
@pipaliyamahir 2 года назад
Of i want make design 86 dia circle ???how to devide a no of teeth..what is the addandm,dedundm and circular ..can u explain ??
@PDWCreative
@PDWCreative 2 года назад
You will need to base your design around the desired diameter and calculate the other inputs as variables. It sounds like you need to go through the video and decide which other parameters are important for your design.
@thistemba
@thistemba 3 года назад
3:22 Should be "pitch circle minus two times the dedendum"
@PDWCreative
@PDWCreative 3 года назад
I see the confusion. The video shows it is pitch circle minus two times the dedendum which is correct. But the audio sounds like I'm mentioning the addendum. Please just follow the calculation laid out on the screen for this point. I will make a note to point it out on the video.
@jethavavijay1460
@jethavavijay1460 7 месяцев назад
Please video upload inner gear teeth with pin dia.
@moviebucket8646
@moviebucket8646 2 года назад
What is mean by module
@PDWCreative
@PDWCreative 2 года назад
It’s a term used in gear design
@adiletk.3811
@adiletk.3811 2 года назад
Please can you add russian subtitle?
@irondan357
@irondan357 2 года назад
i somehow ended up calculating a base circle thats smaller than my clearance circle
@PDWCreative
@PDWCreative 2 года назад
It can sometimes work out smaller. There is an example in video 3. Try modifying it to your inputs
@jethavavijay1460
@jethavavijay1460 7 месяцев назад
Hello sir good morning
@ryanb1874
@ryanb1874 3 года назад
Is there easy hack how to calculate it all, without machineries handbook and all the redundant relashonships, with half of the symbols having no expression or knowable meaning. AM cave MAN dammit. Want to fly like bird. And too many mathspeak pencil neck make want to club and eat your cubs... JKG. I love the topic and the videos...
@PDWCreative
@PDWCreative 3 года назад
You could do all the calcs manually and just input the values for each dimension. Also if you set an excel spreadsheet to auto calculate based on tooth number and module it would make life easier for you if you ever want to make a second gear.
@douggale5962
@douggale5962 Год назад
Normally I love engineering stuff, but gears are like nails on a blackboard to me. The "module"? What a load of crap terminology.
@PDWCreative
@PDWCreative Год назад
I’m sure there’s a reason the the naming. I’ve never looked into it
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