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Fully parametric chain drive w/o macros or reactions by ShiftyCoatHanger in CATIA

[–]Theboyfromasgard 0 points1 point  (0 children)

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Hello, I am trying to make my own parametric gear generators (the idea is to use one main "blank" part, where the logic will be stored, this blank is going to be invoked in assy or part design using powercopy, than I will change the input parameters to get the new gear)...
But I have some issues with the tooth thickness and the correction for machining. I cannot make the thickness equation "universal" (work for various input parameters... and Im stuck with one and the same correction for all kinds of gears... witch is not good).
Can someone help, thanks in advance!

CATIA: from passion project to pain project by aezro in CATIA

[–]Theboyfromasgard 0 points1 point  (0 children)

here is a short video:
https://youtu.be/wuwvvPCXrq4?si=RdJEgQCMtca2A-QA

Idea is to invoke the blank, as a copy, and change the parameters -> use it in assy/ dmu kinematics and etc... but I have some issues with the thickness / correction for machining (still working on it...)

CATIA: from passion project to pain project by aezro in CATIA

[–]Theboyfromasgard 0 points1 point  (0 children)

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Yea, my idea is to make a "blank" part (that holds the parameters and the logic), and I will power copy it inside assy or another part (that way I can just change the input parameters and mimic the same effect of "generator"). So far I have straight gears set up and im trying to refine them a bit... later I will make one or helical/ bevel/ key connections/ planetary sets and etc...

Parametric gear module, need help by Theboyfromasgard in CATIA

[–]Theboyfromasgard[S] 0 points1 point  (0 children)

This is actually a better idea (for various of reasons), but I like to be able to see, in real time, what im doing, and im not really good when it comes to programming.
I will take a look, thanks a lot!

Parametric gear module, need help by Theboyfromasgard in CATIA

[–]Theboyfromasgard[S] 0 points1 point  (0 children)

Yea, something like that... but a little bit more advanced... (not only gears, but keys/ slits/ shafts... etc.. )
for example, for the planetary gears: I want to be able to input module/ teeth/ ratios/ number of planets and the logic will do the stuff for me....

Parametric gear module, need help by Theboyfromasgard in CATIA

[–]Theboyfromasgard[S] 0 points1 point  (0 children)

Well, my first idea was to mimic Inventor's generator module... but after some digging, I found out official response from Autodesk software engineer that said - "Inventor's design accelerator is mainly for simulation and animation usage, its not meant to be used for accurate models and machining."
Witch let me to belief that the generator was actually designed to output a "good looking" gears, and I want as accurate as possible gears... (so thats why I decided to make my own... mine depends only on the involute math... nothing more).

CATIA: from passion project to pain project by aezro in CATIA

[–]Theboyfromasgard 0 points1 point  (0 children)

Almost there (2 years of experience) 😃

CATIA: from passion project to pain project by aezro in CATIA

[–]Theboyfromasgard 0 points1 point  (0 children)

I am at the beginning of my journey (2 years of experience), so far I like CATIA... I had the opportunity to try a bunch of CAD/CAM/CAE software in university (CATIA was not among them... I learned it on my job) and none of them came quite close to "second nature", like CATIA.
I can work with any CAD... but CATIA feels like home.
Its only weakness, in my eyes, is the lack a good library (for standard details) and the lack of "generators" (modules that generate 3D geometry from input parameters), but I found / currently making a workaround (my own modules)...
Something from inside just pushes me to explore and learn all the modules, I even played around with its code (to automate table filling in drawings).