How to model spur gear in creo 3.0,2.0 (equation driven)

This video describes how to model spur gear in creo 3.0, 2.0 using equations to generate involute profile and use of parameters and relations in creating 3D models and how to associate dimensions to parameters.
for involute curve equation and spur gear relations go to following link:
grabcad.com/li...

[@smanyu6230]

relations for spur gear:
circular_pitch = pi*module /*circular pitch
addendum = module /*addendum
dedendum = 1.25*module /*dedendum
refernce_dia = module*no_of_teeth /*refernce diameter
tip_dia = refrence_dia+2*addendum /*tip diameter
root_dia = refrence_dia-2*dedendum /*root_diameter
base_dia = refrence_dia*cos(press_angle) /*base_diameter
root_fillet = 0.38*module /*root fillet radius
semitopping = 0.1*module
tooth_thick = circular_pitch/2 /*tooth thckness
Involute equation:
theta = 90*t
angle_ratio = theta/360
S = angle_ratio*pi*base_dia
base_radius = base_dia/2
Xc = base_radius*cos(theta)
Yc = base_radius*sin(theta)
X = Xc+(S*sin(theta))
Y = Yc-(S*cos(theta))
Z = 0

[@mpsaju]

Please note the following correction:
tooth_thick_mm = circular_pitch/2 /* in mm
tooth_thick = 360/no_of_teeth/2 /* in degrees... Creo dimensions in degrees in the sketch

[@yunusjamal5908]

Thanks alot sir. You truly deserve appreciation.
May Almighty reward you for this work

[@lucaraimondi4020]

Thank you very for such a fine tutorial. I would like to extend the answer of Jan, the easiest way to correct the error in the tooth_thick parameter is to define correctly the arc length. In the video it is created picking one end of the arc, the centre of the cfr and finally the second end of the arc but this creates an angular dimension, not the arc one. To create correctly this, it is necessary to pick in order: first point of the arc, second point of the arc, the arc itself (and finally pick the central button to create the dimension)

[@huGLITCHES]

thank you!!

[@janstribrny9986]

There is mistake in equation. "tooth_thick" is counted from "circular pitch" assuming using lenght of arc where it switches to angular dimension in degrees.
So changing parameters of gear wont work.
In metric system template (°degree) change first line in relations of gear:
circular_pitch = 360/no_of_teeth

[@austinshinnick8680]

Fantastic tutorial, thank you. I run into problems when the reference diameter reduces below 72mm though, any idea on how to get around this? I need to design a few fairly small gears

[@anuragshrivastava18]

Awesome video sir. Thanks a lot for sharing

[@zaidabdulsamad]

Hi there, nice tutorial. Can you please paste here all the relations that you used to make this Spur Gear? Thanks.

[@RAM-xr5ve]

thank you sir very useful video

[@raziahmed7308]

very help full video thanks

[@ckflorin]

how can i adjust its size? I need a 35 mm diameter gear and this one is much bigger. Thank you

[@ДимтрийЗабровский]

circular_pitch=pi*module
addendum=module
dedendum=1.25*module
reference_dia=module*no_of_teeth
tip_dia=reference_dia+2*addendum
root_dia=reference_dia-2*dedendum
base_dia=reference_dia*cos(press_angle)
root_fillet=0.38*module
semitopping=0.1*module
tooth_thick=circular_pitch/2
theta=90*t
angle_ratio=theta/360
S=angle_ratio*pi*base_dia
base_radius=base_dia/2
Xc=base_radius*cos(theta)
Yc=base_radius*sin(theta)
X=Xc+(S*sin(theta))
Y=Yc-(S*cos(theta))
Z=0

[@단팥빵-o1m]

thank you so much

[@keshavbhavsar0411]

I have an problem in making curve by equation. the equation your writing for involute spur gear is invalid in my creo 3.0 .why?? I doesn't know the reason.
I tried a lot but didn't correct it... I made correction but not a generating perfect curve.. what can I do ?? please reply. ass soon as possible ..
otherwise give your mail id ..I will mail my SS to you ..let's fix it yrr

[@mds31022]

what is the definition of Module?

[@rajanpatel1670]

great tutorial.
But sir, i try it for different module & no_of_teeth , there is problem in involute shape.
i model for following data:-
1) Module:- 3 & no_of_teeth:- 80
2) Module:- 10 & no_of_teeth:- 45
Please suggest the right way to model spur gear with above parameters.

[@axtimushello]

Change your coordinate system of your model

[@aukshwantrahate1076]

how you gave the offset to datum point of 0.5?
what are its calculations?

[@TananBaboo]

AUKSHWANT RAHATE it’s a ratio meaning 50%.... it puts a point right in the middle of the curve.

[@syafiqhariz13]

How to change the root diameter?

[@ravikiran450]

Sir, The base circle is not creating and I follow as per your video

[@YogeshDeshmukh]

sir please send me notepad parameters...

[@pratikghadge3889]

what is "t" in involute equation

[@caecoach631]

Here a shorter version :th-cam.com/video/3otqNvgr3uY/w-d-xo.html

[@aakkaasshhbb8034]

WHY CANT YOU PASTE THE EQUATIONS IN YOUR DESCRIPTION

[@MechBros]

Brother, visit the link given in description box. Subscribe and press bell icon for notifications.
th-cam.com/users/redirect?redir_token=sUwsvqcwjuqAdlJKFkabak_IU-N8MTU5Mzc4MDU4OUAxNTkzNjk0MTg5&event=video_description&v=HXokVL-ldQ0&q=https%3A%2F%2Fgrabcad.com%2Flibrary%2Fspur-gear-using-equations-1

[@sivakumarc6818]

good.............................................................

[@lalitkakde7851]

I have an problem in curve

[@cadinsider964]

Changing gear parameter wont work

[@karhiravanr4159]

Sir i need this question

[@MechBros]

visit the link in description

[@DevarshRBhatt]

just here for pattern command

[@winup.]

I can't draw curve like you. What's wrong???

[@ajithmathew855]

This equations are wrong.
Please correct these equations. Please give your mail id to contact you

[@MechBros]

Equations are absolutely correct bro, don't understand what problem you face. Try again.

[@nicholasloh9866]

@@MechBros u suckk relations have errors

[@arnavchhajlani20]

THAT IS NOT TOOTH THICKNESS IT IS ANGLE.!!!!!!!!!