FreeCAD Assembly 3 Constrait Icons

 

Hi guys.

Defining a more efficient line of rationale about CONSTRAINT ICONS.

My mental organization is described in the image below.

Assembly3 error when using Reference line of a Sketch file to create an Element

A brief clarification. In my CAD practice, Reference line and Construction line are synonymous. The nomenclature depends on the software you are using. FreeCAD uses the Construction line nomenclature by placing these lines in blue color. These are lines that help (assist) in the construction of geometric structures but are ignored (made visible) by the CAD software when the user leaves Sketch editing mode.

Different from these are the Geometric lines (white lines, in FreeCAD Sketcher Workbench) that when created form geometric figures used in 3D modeling.

Understand the current problem. Watch this video:

Link to the project files:
https://drive.google.com/drive/folders/1j4_haVb3IuLhRJn3q0s8SpGLjhGHwi4M

A simplified sequence can be seen in the image below:

Click in the image for expansive.

Am I doing the same procedure performed in this Assembly 3 tutorial:

https://github.com/realthunder/FreeCAD_assembly3/wiki/How-to-Handle-Large-Scale-Assembly

Where is the error in performing this action?

Reponse: Everything indicates that it is a limitation in the current version of Assembly 3, when using Reference Line (blue line). Wait for new updates!

My FreeCAD settings:
Version: 0.19
Revision Number: 22894 (Git)
Release date: 2020/10/31

Current solution: An alternative approach is to use a second Sketch to create a Construction Line (white line) and then use that line to create the Element. The image below describes a step-by-step:

Click in the image for expansive.

FreeCAD Assembly 3 - Manual movement of the base of a piston mechanism

Hello folks!

I'm doing tests on the latest version of Assembly 3 and learning how this Workbench of the FreeCAD works.

In the video I do a simple assembly to test some properties of Assembly 3.

I worked with Assembly 2 plus, but I found limitations in moving the part in relation to its hierarchy of constraints. The Assembly 3 has extensive support of manual movement of nested assembly.

The following link is a part of the official tutorial that describes this mechanism of manual movement of the part, considering the constraints applied to the structure.

Link: https://github.com/realthunder/FreeCAD_assembly3/wiki/Common-Operations#part-move

How would you assemble this part using Assembly 3?

Let's exchange an idea.

Link to download the video part files:

https://drive.google.com/drive/folders/1b1_j-CLql6fM_O8lrjNGECV1B1rD27TV

My FreeCAD settings:

Version: 0.19

Revision Number: 22894 (Git)

Release date: 2020/10/31

Click in the image for expansive.

Assembly 3 Workbanch FreeCAD - Understanding the Lock Angle property

Click in the image for expansive.

QUESTIONS: 

 

1- Why is it necessary to change the Lock Angle flag to "True" to change the Angle property of a PlaneCoincident Constraint (applied to a part)? When doing this I notice in the Report Review that all the degrees of freedom (DOF) of the piece are zeroed.

2- Should the Lock Angle flag be set to "True", should the piece not become static, that is, without the possibility of changing the rotation angle?

3- I notice that the property "Lock Angle" is used a lot in Algebraic Expressions and Algorithms for animation in Assembly3. What is the reason in these situations?

Error in the installation process of MinGW Compiler

Error in the installation process of MinGW, in the binutils-2.25.1-1-mingw32-bin.tar.lzma file.
Operating System: Windows 7 - 32 bit.

What to do?

Image 1

Image 2

To date the perciste error!

Don't use the MinGW Compiler version is available at this link: https://sourceforge.net/projects/mingw/files/Installer/

Version: mingw-get-0.6.2-beta-mingw32-20131004-1

Release date: 04/10/2013

I'm currently using the MinGW available in TDM-GCC MinGW Compiler package.

Download link: https://sourceforge.net/projects/tdm-gcc/?source=directory

Very good!
I recommend.