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This is outstanding, exactly what I was looking for. I knew there had to be a way to draw a proper gear with nothing but geometry and math within the CAD tool being used. So many other tutorials rely on external calculators, spreadsheets, importing coordinates… This is the way.

7:18 You got it wrong - "the segment distance between first two points" should actually be "the segment distance of base circle between first two points". Difference might seem irrelevantly small but actually it makes your profile significantly different from involute gears.

With what circuit do you make the motor turn one way and then the other?

...There is a possibility of using parametric equation. X= dbase × cos(t) + dbase × t × sin(t) Y = dbase × sin(t) - dbase × t × cos(t) dbase = base diameter t = angle radians Good luck.

Can you please send the file

Great!!! work on involute profile

I like the information on the involute profile and how to draw it. What I didn't so much like is modeling practices, especially in SW, So for others learning always mirrors the sketch if you can it is far far more efficient to solve and you're going to be patterning also so it's really important to keep your features light. If he were to do a whole gearbox his system would slow to a crawl trying to solve a mirror pattern on a few thousand features. also and this is more if you ever plan on working for others give variables names that make sense and if you're going to use a shit ton of construction geometry either name it in the sketch or name them in the variables for a teaching aid I would add the name in the dim text. lastly, add radios using the feature. you will find that relief radi changes depending on how something is machined it's far easier to change the radius feature named gear relief than to undo a double tangent constraint. I would have also defined most of the calculated values in the equations but that is just my preference, I would also have put the 3 diameters in their own sketch and described the involute curve in another. I may have been so inclined to put the extrude geometry on top of the theoretical curve just to keep it clean and understandable then there would be an argument to define the relief in the sketch.

Did you say The tooth width is 7.85 inches AT VIDEO 14:02 or u meant 0.785? Thanks

How about when the base diameter is the smallest

Thank you so much. Great video

I am trying tp create my involute curve with the following sized gear: Picth Dia. = 330 Module = 3 No. of teeth = 110 Pressure Angle = 20° My base circle Diameter (134.67mm) is much smaller than the pitch diameter and also the addendum. This presents an issue when I create the involute curve connecting the segments. the involute curve does not intercept the pitch diameter. Has anyone modeled larger gears?

Solidworks is a bizarre program because you can't natively rotate an assembly. Once you draw it on a particular axis, it's there for life.

It's a great job! I got a question with using lengths of equally segmented lines instead of those of equally segmented arcs to creat the points of involute spline.I know it does not matter that much, for there must exist lengths of arcs equal to those of lines.For someone who cant figure this out, it might bring themselves brain racking how this work how it can be, not in a serious way for some aspects. Thanks again.Great Job!

Awesome rendering chuck with lidar

Lol I made this and just saw it and said “wtf who stole my idea” and this was uploaded 9 years ago- same trash can, brute- lololol it works though :))

Such great stuff on your channel from years ago. What's going on in your CNC world now? Still solving problems with a 3D printer? Would love to know what you learnied from that CNC drill.

explicacion fea ni se le entiende lo que esta haciendo, payaso

PLA? (Just noticed that the vid is 7 years old, I bet you don’t even remember! :-)

Ok.....anyone ever teach u how to make an actual RUclips video? Cause this video sucked more than ur dust collector did

Is this how to Create a SolidWorks Part Model of a spur gear using ‘Unwin’s Construction Method? if yes thanks you so much...if no...pls could you direct me to the appropriate video link

Thank you Michael. It's a very nice tutorial.

For those who need the equations: 1. Pitch Diameter (d) = given (you choose) 2. Number of Teeth (n) = given (you choose) 3. Pressure Angle (p) = given (you choose; typically is 20 deg) 4. Diametric Pitch (dp) = n / d 5. Dedendum Diameter (dd) = d - ( (1/dp) * 2) 6. Adendum Diameter (da) = d + ( (1/dp) * 2) 7. Base Diameter (db) = d * cos(p) 8. Tooth Width (tw) = pi / (2 * dp) 9. Half Tooth Width = tw /2 10. Tooth Width Angle (ta) = (tw / d) * (180 / pi) Hopefully these are correct. Correct me if I'm wrong. AM 8/26/2020

why do i get my base circle diameter smaller than my dedendum diameter???

Where does the pressure angle come in or did I miss that part?

Thank thank you so much. This was so well done and calmly and clearly explained.

I think you're a little off on your involute profile. The variable radius lines should equal the arc length along the base circle and not the line segment between the two points. The error is growing for every sequential radius calculation.

How will I measure for MMGS cevirsozluk.com/

Dear Michael my mail ID is arcolasernoida@gmail.com, request you to please mail me.i need to get some gear designing done

Update: GCSW - Free Gear Calculator from KHK gears - get a DXF output of any gear profile which can be imported in SW to make the gear in 3D. Just did this, works great in no time at all.

Great tutorial. I am reverse engineering some pretty interesting gears from a lathe gearbox - actually there are gears with different numbers of teeth working on the same center distance (slide gears). For example, there's a 30 and a 33 tooth gear, both with the same OD, that work with a 24 tooth counter gear. I have calculated the gears to be DP 12, with a +0.4 profile shift on the 24 tooth gear and yet to be determined positive/ negative profile shift on the 30/ 33. With the given center distance these can be accurately calculated. The SolidWorks modeling is great for checking. I plan to get the actual sample (damaged gear) on a profile projector and get a 1:1 image from that which I then will be able to check against my SW constructed profile. This should be sufficiently accurate. Thanks again for the video.

Thanks so much for the HD version. Need to learn this manual way to draw a gear based off some old pdf as the automatic methods aren't giving me the exact same result.

Nice demo. Thanks! Would like 720p if you have it.

It didn't self close you pushed it.

Hi nice print. Just wondering how much torque can those gears handle. Like if I was going to reduce a nema17 with 4 kg cm of torque, whould it handle 5 times the torque.

Great job showing us the involute curve generation & a gear that can be changed with only a couple variables. Could you produce a video teaching us how to build equation driven helical bevel / miter gears?

Thanks very good video

Hey! Can i ask which motors do u use exactly and what are their speed rpm or rps, of motor's shaft! I am asking because i can get only like 200rpms that is around 3 rotations per second with my Nema 23. Thank you

Thanks for the video. The only thing i did not understand is how you defined the 0.625 sector spacing.

Could you explain why you have the portion of hose going from the thickness planer to the trash can elevated in the middle? And how far would you say the hose descends from the lid before it begins the 90 degree turn? Great job!

very helpfull

How do you like your x8? What flight times are you getting with what battery using your 2D gimbal and Gopro? I'm really curious.

That's much easier than I thought it would be!

Nice...and so is the music!

good job. a little bit more info would be nice

There is a piece of 1/8" weather strip in the lid to help form a seal. The shop vac sucks the lid down pretty tightly but I put spring clamps around the lid to hold it in place when hooked up to a planer. The chip ejector on the DW735 planer actually moves more air than the shop vac and creates positive pressure inside the trash can. Without the clamps, the lid will pop off.

The hose and couplings are from Woodcraft. The trash can and shop vac are from Lowe's

Does the can seal well enough for this?

Sorry, I haven't had a chance to make another video. It cost a little more than $85 for all the parts. The biggest difference is that I can capture about 25 gallons of saw dust at a time.

Did you ever make that updated video on this? I dont see it on here. I was thinking about getting the Rockler Dust Right Separator but its $85

I'll make a better video with it hooked up to the planer so you can see how it works.