How do I cut the involute gear through
Forum rules
and Helpful information
and Helpful information
IMPORTANT: Please click here and read this first, before asking for help
Also, be nice to others! Read the FreeCAD code of conduct!
Also, be nice to others! Read the FreeCAD code of conduct!
How do I cut the involute gear through
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13971 (Git)
Build type: Release
Branch: master
Hash: 8e4dd8ca8496595d4718dc24c872f7ed668b2521
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/Australia (en_AU)
I want to use the Involute gear template to cut the teeth through the green area?
Thanks for any guidance,
Gary.
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13971 (Git)
Build type: Release
Branch: master
Hash: 8e4dd8ca8496595d4718dc24c872f7ed668b2521
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/Australia (en_AU)
I want to use the Involute gear template to cut the teeth through the green area?
Thanks for any guidance,
Gary.
- Attachments
-
- wheelGearAndShaft.FCStd
- (158.83 KiB) Downloaded 11 times
Re: How do I cut the involute gear through
Hi
you extrude the pinion big enough to encompass all the wheel and its axis, and to make a common booleen with the pinion and the wheel
you extrude the pinion big enough to encompass all the wheel and its axis, and to make a common booleen with the pinion and the wheel
- Attachments
-
- roue train crémaillère.PNG (81.69 KiB) Viewed 693 times
Re: How do I cut the involute gear through
It would have been best to start with an additive gear. Now you can move the gear out of the body, use Part-Extrude for 3000mm reversed and make a boolean Common. If you want to continue working on it in PartDesign, you have to create a new body with Common as BaseFeature.
The file is too big to attach.
The file is too big to attach.
- Attachments
-
- Bildschirmfoto 2019-04-23 um 08.36.35.png (56.67 KiB) Viewed 690 times
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: How do I cut the involute gear through
While this will work it is not the proper way to do it. You should not use features of a body outside of the body. This will give "Links go out of scope" warnings/errors:
The Common operation should be done with the body itself and not with its last feature (pollar pattern): .
and the Part extrude should be done with the gear profile OUTSIDE the body (you can drag it from the body on to the file name to do that): .
After you do that you should yse the Common as BaseFeature for a new body if you need to continue adding PartDesign features:
.The Common operation should be done with the body itself and not with its last feature (pollar pattern): .
and the Part extrude should be done with the gear profile OUTSIDE the body (you can drag it from the body on to the file name to do that): .
After you do that you should yse the Common as BaseFeature for a new body if you need to continue adding PartDesign features:
Re: How do I cut the involute gear through
Another way is to convert that gear profile to sketch, (Draft/Draft to sketch), drag that to the body, draw a circle around the gear profile and use that to pocket through all:
But as Chrisb mentioned better start with the PartDesign Involute gear and add features to that. You already have all your sketches so this should not be very hard to recreate.
.But as Chrisb mentioned better start with the PartDesign Involute gear and add features to that. You already have all your sketches so this should not be very hard to recreate.
Re: How do I cut the involute gear through
In this way, be careful not to use internal involute gear, but a negative of external involute gear, because the profiles are not the same.Another way is to convert that gear profile to sketch, (Draft/Draft to sketch), drag that to the body, draw a circle around the gear profile and use that to pocket through all:
Re: How do I cut the involute gear through
To make things clear: Some references became unclear due to intermediate posts:
- meme2704 and I were both referencing the original first post.
- kisolre referenced meme2704's first post, where indeed a feature is used in a Part boolean operation.
There is another way, staying in PartDesign:
- Create the gear in a new body
- Add a boolean operation in the first body
- Set the type of the operation to Common and add the second body, which contains the gear.
I should mention that the filesize rises from 1.2MB with the Part-booleans to 2.0MB with the PartDesign-booleans.
This is how the tree will look like:
- meme2704 and I were both referencing the original first post.
- kisolre referenced meme2704's first post, where indeed a feature is used in a Part boolean operation.
There is another way, staying in PartDesign:
- Create the gear in a new body
- Add a boolean operation in the first body
- Set the type of the operation to Common and add the second body, which contains the gear.
I should mention that the filesize rises from 1.2MB with the Part-booleans to 2.0MB with the PartDesign-booleans.
This is how the tree will look like:
- Attachments
-
- Bildschirmfoto 2019-04-23 um 12.28.15.png (53.51 KiB) Viewed 665 times
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: How do I cut the involute gear through
Thanks everybody,
I will look into all the advice and (hopefully) learn a little.
I will report back ASAP>
I will look into all the advice and (hopefully) learn a little.
I will report back ASAP>
Re: How do I cut the involute gear through
Bon Ok, here is 1 other aproch with only 1 body and all on the body and in only 932K0
- Attachments
-
- wheelgear1.FCStd
- (932.71 KiB) Downloaded 11 times
Re: How do I cut the involute gear through
Thanks again everybody.
I have tried the various options, some with more success than others (this is a statement of my skill level not the suggestions).
Ultimately I ended up using ChrisB's suggestion using another body and a boolean operation.
I certainly gained a better understanding of things whilst trying the various options. Hopefully some of it will stick.
Cheers.
I have tried the various options, some with more success than others (this is a statement of my skill level not the suggestions).
Ultimately I ended up using ChrisB's suggestion using another body and a boolean operation.
I certainly gained a better understanding of things whilst trying the various options. Hopefully some of it will stick.
Cheers.