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Motion · Lesson 3: Cams and event-based motion

Generate a cam profile from data points, servo motors, proximity sensors and event-based study.

Lesson goal

Design a cam from a motion law and simulate an automated sequence.

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2 videos

✎

1 exercise

Advanced

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Prerequisite: Lesson 2

1. Watch the videos

Dassault Systèmes videos hosted on MySolidWorks: they open in a new tab and a free account is enough. Watch them in order.

Cam SynthesisVideo 1▶Cam SynthesisDefine the follower displacement with data points, trace the cam profile and check it.↗ Event Based Motion StudyVideo 2▶Event Based Motion StudyServo motors and proximity sensors to place an object in a box and then close it.↗

2. Key takeaways

1

The follower displacement law is defined with Data Points, for example from a table.

2

The cam profile is generated with Trace Path, then checked in simulation.

3

In an event-based motion study, each action is triggered by an event rather than at a fixed time.

4

Servo motors perform the actions; proximity sensors detect part positions and trigger the next step.

Tip

Start from the motion law the process requires, then let SOLIDWORKS Motion draw the cam: you avoid reworking the profile by hand through trial and error.

3. Do the exercise

On a cam and follower set:

  • enter a follower displacement law as data points
  • generate the cam profile with Trace Path
  • run the study again with the generated cam to check the motion
✓To check: With the generated cam, the follower displacement reproduces the law entered as data points.

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