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JD Mather

Inventor 101

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JD Mather

Rib Draft.png

 

Next add Face Draft to the sides of the rib.

Select the bottom of the Rib to set the Pull Direction and then select the sides of the rib near these planar "hinge" edges.

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JD Mather

Full Round Fillet.png

 

I don't recall if we have done Full Round Fillet yet. For this feature we select three faces in order. Side face 1, Center face, and Side face 2. This ensures that if we change the thickness of the rib, the fillet always spans the 3 faces. And because of the draft angle on the rib - the fillet is not R4 as we might expect.

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JD Mather

R10 Fillets.png

 

Add R10 edge fillets to the 4 edges shown.

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R2 Fillets.png

 

Add R2 fillets to the edges shown.

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Hole Centers.png

 

Start a new sketch as shown on the bottom of the part.

 

Sketch a rectangle and change the corners to center points.

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Usual technique.png

 

By now you should be an anticipating some of our next moves.

 

Constrain and dimension the sketch as shown.

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JD Mather

Clearance Holes.png

 

Now add Clearance holes for M8 Hex Head Cap Screws (I incorrectly show Socket Head Cap Screws selected in the image).

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C Bore Hole.png

 

Place a counter bored hole on the top of the part, concentric to the cylindrical feature as shown.

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Hole Location.png

 

Start an new sketch on the "right side" of the part as shown.

Sketch vertical line from the projected origin.

Convert the endpoint of the line to a sketch center point.

Dimension the height from the bottom of the part.

Note that this line will keep the hole centered.

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8mm Hole.png

 

Create an 8mm Hole through the part.

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Paint.png

 

"Paint" the part to whatever color you want.

Remove the "paint" from the machined faces.

Save the file.

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Start a new metric part file.

 

Start a new sketch on the right side plane (YZ) and create the sketch shown.

 

Ellipse Sketch.PNG

 

Add the ellipse and horizontal object line shown.

 

Add Ellipse.PNG

 

Trim the ellipse below the horizontal line and Finish the sketch.

Save the file with the name Knob.

 

Sketch1.PNG

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Right click on the YZ plane and make it Visible.

Create a new offset Workplane, click and drag entering a distance of 41.

 

Start a New Sketch on this new Workplane.

Workplane1.PNG

 

Create a vertical construction line going down from the projected origin center point a distance of 41mm.

Add a 20mm circle.

Finish Sketch2.

 

Sketch2.PNG

 

Oops - I made a mistake. No problem.

Double click on the Workplane1 in the browser and change the offset distance from 41 to 30.

(it was the construction line length that is 41mn, not the workplane offset distance)

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Create a new Workplane2 offset a distance of 45mm from the YZ workplane.

 

Workplane2.PNG

 

Create a New Sketch on Workplane2 and Project Geometry the vertical construction line from Sketch2.

Create a circle at the end of the projected construction line as shown.

 

Sketch3.PNG

 

Finish Sketch and save the file.

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Mirror Workplane 1 and 2 about the YZ plane.

Mirro Planes.jpg

 

Start Sketch 4 and Project Geometry the 20mm circle.

Start Sketch 5 and Project Geometry the 16mm circle.

Sketch4 and 5.PNG

 

Finish sketch and save the file.

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Start the Loft command and select the sketches from left to right.

Click OK.

 

Loft.PNG

 

Right click on the Workplanes and turn off the Visibility.

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Start Sketch6 on the XZ Plane and create a 20mm circle as shown.

Finish sketch.

 

Sketch6.png

 

Extrude the circle To Next.

 

Extrude.PNG

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Add 6mm Fillets as shown.

 

Note: You must pick two edges on the ends for the fillets to go all the way around.

 

Fillets.PNG

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Add a threaded hole as shown.

 

Hole.PNG

 

That completes this part.

Set the material to Steel and Chrome texture.

Save the file.

 

Holes should not have sharp edges - add a 1mm Chamfer to the edge of the hole.

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