This technical drawing is created for CAD programs like Catia, Solidworks, FreeCAD, Inventor etc. You can practice for education.
To create this part in FreeCAD, Mirror,copy,symmetry,construction geometry and lock constraint commands in 2D sketch. Then pad,fillet and pocket command in 3D part design workbench.
This tutorial is created for beginners. Not only FreeCAD but also other CAD program users can create easily,when you watch tutorial video.
If you want to watch video how to create this part, You can watch video below.
The Symmetry Constraint centers two selected points to be symmetrical around a given line, i.e., both selected points are constrained to lie on a normal to the line through both points and are constrained to be equidistant from the line. Alternatively it can constrain two points to be symmetric with respect to a third point.
You can only use it with tree points or two points and a line. Symmetry button has an two important advantages. First one, It centers to drawings in 2D sketch. Second one is it helps to use less constraint like center, point and dimension.
If you want to understand better how to use it, You should watch my video below. Also I add technical drawing of video to practice with it.
Video of this drawing is below. Don't forget to watch my video. You will understand how symmetry button works in FreeCAD.
If I tell you how symmetry button works shortly. Firstly draw a line or geometric shape. Then follow steps below. There are two working principle of this constraint button.
Click the symmetry button first: select the first point, then the symmetry reference point, and finally the second point.
Click the symmetry button last: select the first point, then the second point, and finally the symmetry reference point.
If you want see more video tutorial or different information videos like that, Subscribe my channel. You will have a chance to see more beneficial contents.
Don't forget to check latest update of FreeCAD. It is an open source program, thats why it can have a new versions. You can see link here: https://www.freecad.org/downloads.php
Assembly 4 Video tutorial helps to understand how to create LCS of parts and how to attach assembly parts in FreeCAD Assembly 4 workbench.
When you watch video, you can follow assembly notes here. This will be useful to create and select parts easily. You should follow order of assembly parts like in video .
After opening assembly parts and creating LCS coordinates, You will follow these steps.
I start with first part which is base. You don't need to create any LCS. Base part is fixed, so fixed parts inserted directly without coordinates. You need to just click parent assembly.
Second part is Bush. This time LCS coordinates are selected like below picture. Click hole axis both side in list. After that click 2 times rotate y axis button to obtain right position of bush part.
You need to do same things for second bush. Part is same, so assembly process is not different. You just click hole axis for base and bush.
Third part is Pivot. It has only one LCS which is hole axis. Firstly click hole axis than click LCS bush face. After that click 2 times "rotate Y axis" button then click 3 times "rotate Z axis " button to complete pivot assembly.
Fourth part is washer. It also has one LCS. It attaches to "Base" part. Click LCS washer for attached part like in picture.
Fifth part is bolt. After inserting it, you need to click LCS bolt and washer to complete assembly of bolt part. Just click LCS bolt and LCS washer like below picture. After that enter 2mm thicknes in Z direction.
Last part is nut. It has one LCS to attached base part. Click LCS nut in assembly list. You don't need to rotate or enter dimension.
If you watch video below, You will understand better how Assembly 4 works in FreeCAD.
FreeCAD Part Design Video Tutorial Technical drawing is below. This time, I create front and top view in drawing.Video contains how to design this part in FreeCAD workbench. If you want to practice, you can watch all steps in video then you can create same drawing.
Both technical drawings use for same part design tutorial. First one is for how to decide starting plane. Thats why views have no dimensions. Both view can be used according to part.
Drawing contains
How to decide starting plane in 2D sketch
Creating datum plane according to technical drawing
Using 2D sketch constraints relations
Creating constraints
Using Isometric View to create a sketch.
Adding Dimensions
Using lock constraint
Creating sketch without external geometry
Creating pad and pocket in symmetric to plane.
How to use symmetry button in FreeCAD 2D sketch
Mirror tool in 2D and 3D sketches
How to copy in FreeCAD
Cloning in FreeCAD 2D sketch
Creating Rib and Support part in FreeCAD
If you want see all these steps, I recommend to watch below video. Subscribe my youtube channel to see more CAD tutorials. I share tutorial videos regularly.
FreeCAD Part Design Video Tutorial Technical drawing is below. This time, I create two drawings with views.Video contains how to design this part in FreeCAD workbench. If you want to practice, you can watch all steps in video then you can create same drawing.
Both technical drawings use for same part design tutorial. First one is for how to decide starting plane. Thats why views have no dimensions.
Drawing contains
How to decide starting plane in 2D sketch
Creating datum plane according to technical drawing
Using 2D sketch constraints relations
Adding constraints
Using Isometric View to create a sketch.
Adding Dimensions
Using lock constraint
Creating sketch without external geometry
Creating pad and pocket in symmetric to plane.
When you watch below video, You will see how to do these in FreeCAD
Constraint Lock applies Horizontal distance and Vertical distance constraints to selected vertices (points) in the sketch. If a single vertex is selected, the horizontal and vertical distance constraints will refer to the sketch origin point. If two or more points are selected, horizontal and vertical distance constraints will be added for each pair of points.
It provides easiness which helps to create desired constraints in 2D sketch. Lock constraint button is located on top sides of constraints set.
This is the picture of lock constraint
TECHNICAL DRAWING OF VIDEO TUTORIAL
How to use lock constraint ? Read these 3 steps to use it.
1- Select one or more vertices (points) in the sketch.
2-Press the Sketcher Constrain lock button.
3-To edit the constraints values, double-click on a constraint value in the 3D view, or double-click on the constraint or right-click and select Edit value in the Constraint list in the Tasks tab.
This is technical drawing is created by using lock constraint button.
Revolution tool is used to create a solid by revolving a selected sketch according to axis. It provides an easiness instead of pad and circles commands. One sketch helps to create a 3d sketch without any other tools or commands.
Revolution tool is called as different names like shaft depends CAD programs. Tool has same mission.
Now If i tell how to use this tool shortly;
Select the sketch to be revolved. A face on the existing solid can alternatively be used.
Press the PartDesign Revolution.svg Revolution button.
Set the Revolution parameters (see next section).
Lastly Press OK to complete 3d sketch.
You can change axis according to desired drawing. It revolves automatically around vertical sketch axis, when you don't change anything.
Technical drawing for revolve video tutorial
Technical drawing has two views which are top and section. Firstly, half of section view is used, then both view will be used to create dimension and revolve in part design.
If you want to understand and how to create revolution in freecad, I advise to you watch below video.
When creating a revolution, the Revolution dialogue offers several parameters specifying how the sketch should be revolved. First parameter is axis.
This option specifies the axis about which the sketch is to be revolved.
Vertical sketch axis: selects the vertical sketch axis.
Horizontal sketch axis: selects the horizontal sketch axis.
Construction line: selects a construction line contained in the sketch used by the Revolution. The drop down list will contain an entry for each construction line.
Base (X/Y/Z) axis: selects the X, Y or Z axis of the Body's Origin
Select reference..: allows selection in the 3D view of an edge on the Body, or a datum line.
Angle
This controls the angle through which the revolution is to be formed, e.g. 360° would be a full, contiguous revolution. The images in the examples section demonstrate some of the possibilities with specifying different angles. It is not possible to specify negative angles (use the Reversed option instead) or angles greater than 360°.
Symmetric to plane
If checked, the revolution will extend half of the specified angle in both directions from the sketch plane.
Reversed
If checked, the direction of revolution is reversed from default clockwise to counterclockwise.
