Tutorial 11: Add Segments for a Progressive Motion

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Tutorial 11: Add Segments for a Progressive Motion

Video 'How to design a Progressive (indexing), 6-segment motion

Before you edit MotionDesigner, do a basic motion plan, on paper, for each machine-axis (tool)

Basic Motion-Plan on Paper.

Sketch the X-axis:

Add a machine-cycle of 360°

Split the X-axis in half, and in half again, to add the 90°, 180°, and 270°.

Add a check mark every 30°

Estimate for each tool for one machine-cycle of 360°:

The number and approximate number of degrees for each segment

The distance or angle the tool moves in each segment

Note if a segment has a 'special' motion requirement  - e.g. constant-velocity

Sketch the Timing Diagram for one machine-cycle of 360°:

Draw a straight-line between each Blend-Point (from each intersection of X and Y-axis values)

Transfer the Basic Motion-Plan from paper to Motion-Designer.

Watch the video below to see the best way, I believe, to transfer the Motion-Plan from paper to MotionDesigner.

In the video you will see how to design a 6 segment, progressive (indexing) motion.

Summary of Video:

1.Start from the default motion. It has 4 segment, all Flexible-Polynomials.

2.Set all Positions to zero - use the Blend-Point Editor

3.Add two new Segments - use the 'Blend-Point and Segment Editor: Insert Blend-Point At...' tool two times.

Each time you use this tool, one segment becomes two segments. The Motion-Width will not increase.

4.Edit the X-axis of each Blend-Point - see Blend-Point Editor.

I usually start by moving X-axis for the Blend-Point that does not need to move much along the X-axis. I do that so that X-axis of a Blend-Point does not 'bump' into a Blend-Point to its left or right.

5.Edit the Position of each Blend-Point - see Blend-Point Editor

6.Edit the Motion-Laws of each Segment - see Motion-Law Selector

The Video: