Step 6C1.1: Add the 3 Planes and 5 Elements

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Step 6C1.1: Add the 3 Planes and 5 Elements

Barrel Cams need three Planes and three Mechanism-Editors

Image of Barrel Cam after it has been transferrred to SolidWorks.

Image of Barrel Cam after it has been transferrred to SOLIDWORKS.

With reference to the image to the left, there are three Planes. There is:

1r A Plane for the oscillating Cam-Follower-Part and also the Follower-Roller - this Plane is offset from the Top-Plane*

2r A Plane for the rotating Cam-Shaft (the Barrel-Cam) - if possible, the Cam-Shaft should be on the Front-Plane*

3r A Plane for the Cam-Blank - this is a cross-section sketch of the Barrel-Cam - this sketch is on the Right-Plane*

* When your model is to design a 3D-Cam only, it is best to use these three Planes.

If the model has other machine elements, then use those Planes as required by the model.

Cam-Rib has two Follower-Rollers

Cam-Rib has two Follower-Rollers

Rib Cams.

This tutorial designs a Barrel-Cam with a Cam-Groove*. The groove guides one Follower-Roller. The groove has two Cam-Flanks. There is one Cam-Flank on each side of the one Follower-Roller.

However, it is also possible to model a Barrel Cam that has Cam-Rib - see image to the left. The Cam-Rib also has two Cam-Flanks.

In the case of a Cam-Rib, you must add two Follower-Rollers.

Contact us, if you need help to model the Barrel-Cam with a Cam-Rib.

Note : the Track is also called a Groove.

The Five Elements for a 3D-Cam:

5 elements for a Barrel-Cam (typical)

5 elements for a Barrel-Cam (typical)

There are five elements. They are on three different Planes and Mechanism-Editors.

Red-14-1b Cam-Follower Part  (on Plane: Cam-Follower)

Red-14-2 Cam-Roller Profile (on Plane: Cam-Follower)

Red-14-3 Cam-Shaft Part (on Plane: Cam-Shaft)

Red-14-4 Cam-Blank Profile (on Plane: Cam-Blank)

Red-14-5 Cam-Blank rotational axis Sketch Line (on Plane: Cam-Blank)

To see all of the elements from one Mechanism-Editor, do :

1: Visibility toolbar > Show other Kinematic and Sketch-Elements. AND

2: Right-each Mechanism-Editor tab and click Show 'other Kinematic and Sketch-Elements'


We must also design the motion for the Follower-Part in MotionDesigner.

The Segments are:

Segment 1: X-axis: 0-120, Y-axis: 0-60 : Poly 3-4-5

Segment 2: X-axis: 120-180, Y-axis: 60-60 : Dwell

Segment 3: X-axis: 180-300, Y-axis: 60-0 : Poly 3-4-5

Segment 4: X-axis 300-360, Y-axis: 0-0 : Dwell

tog_minus        1: Add the Cam-Shaft

tog_minus        2: Add the Cam-Follower

tog_minus        3: Add the Cam-Roller

tog_minus        3: The Cam-Blank and Rotational Axis