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          Blender Tutorials: 608 Bearing - part 7

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Part 7 Modeling The Circlip

The circlip is possibly the easiest of the parts to model. We will start by inserting a Plane object to form the circlip.

Add Plane
Whilst in Object Mode go to the side view NumPad-3 and with the cursor on the bearing centre insert a Plane (Space to open the Toolbox then Add>Mesh>Plane).

Move the vertices so the top right vertex is positioned in the circlip groove of the outer race.

Select the left vertices, grab G and move them 1.6 in the Y axis so the width becomes 0.4mm.

Select the bottom vertices grab and move them 1.25 in the Z axis so the hight becomes 0.75.
Position plane vertices
Size vertices

Spin Go into front view NumPad-1 and spin the vertices around the bearing centre. In the Mesh Tools panel Set Degr:360 Step:64.

Press spin to form the 3D ring.
Select and delete Select two loops of vertices through the ring and X delete them to form the opening in the circlip.

Make sure you have selected the vertices on the back edge as well as those on the front.

Rotate from centre To allow the circlip to be prised out with a sharp tool the cut through the circlip is made at an angle.

To form this select the four vertices on the outer edge of the break and rotate R them from the centre of the circlip.
Add Face Rotate your view and select the 4 vertices on one of the open ends.

Press F to insert a face.

Do the same on the other open end.

Select edges Go into edge select mode and loop select the four edge loops forming the inner and outer edge Shift-Alt-RMB.

Select all the edges of the ends.

Using the bevel centre script detailed in part 4 add a 0.05mm fillet.
Select all the vertices A and in the Mesh Tools panel press "Set Smooth".
Bevel 0.05 Finish the circlip by adding an Edge Split modifier with the default settings as detailed in part 4

Copy and Mirror To finish off we will mirror this circlip onto the other side of the bearing.

In object Mode go into side view.

Copy the circlip Shift-D then Esc to leave it in the same position.

With the cursor still on the object centre Ctrl-M for mirror and select "
X Local ". The copied circlip will be mirrored onto the other side of the bearing.

In the outliner select Plane and then in the Links and Materials panel re name it OB:608-CirclipA. Select Plane.001 and rename it OB:608-Circlip B
Completed Bearing

That completes the modeling of the components for the detailed bearing. In the outliner open the eye icon for all the parts to bring them into view. (If the components don't appear you may still be in local view, try pressing NumPad-/ to close local view) Rotate the view to see your work.

The Dust Shields cover most of the components so you may want to hide one of the dust shields (Outliner eye icon).

Press Ctrl-W and save your work.
One dust shield removed

To recap: the commands and tools you have covered in this tutorial include.

Short Cut
7 Top E Extrude
1 Front G Move (grab)
3 Right Side S Scale
SW Zoom In/Out (mouse Scroll Wheel) Shift-S Snap
MMB Rotate View (Middle Mouse Button) X - Y - Z Constrain to Axes
Shift MMB Pan View Tab Object/Edit Mode
Home Centre View Space Toolbox
Z Wire/Solid View Ctrl-Z Undo
LMB Set Point (Left Mouse Button) Edge Split Surface (Modifier)
RMB Select Spin Spin vertices around axis
Shift-RMB Select Multiple Vertices Spin Dup Copy Vertices around axis
B Box Select Edge Split Modifier
R Rotate W Remove doubles (Specials menu)
K Knife Ctrl-N Recalculate Normals Outside
Ctrl-E Mark Sharp (Edge Specials menu) Alt-RMB Loop Select
B-B Paint Selection Shift-Alt-RMB Multiple Loop Select
Ctrl-M Mirror Ctrl-D Duplicate (copy)
Alt-S Scale along normals H Hide

The completed bearing is ideal for producing visualizations or detailed drawings but with over 26,000 vertices it will require a lot of you computers resources if you have many of these in an assembly.

My CNC machines assembly model will require 60 bearings and at this level of detail that gives over 1.5 million vertices far more than my old PC can handle, so Part 8 will show how to retain the precision of the design but with substantially fewer vertices.

<< 608 Part 6 The Dust Shield Tutorials 608 Part 8 Low Polly Bearing >>

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