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Mechanism design is very difficult without immediate kinematic analysis
Kinematic analysis can be used to achieve all sorts of ends. For example, you may be searching for a mechanism that generates a coupler curve with a straight line path that has constant velocity over the duration of the straight-line section. If you can calculate the kinematic data of the coupler point, then you can optimize your design by adjusting link lengths until your goal is achieved.
MechDesigner has a tool called Design Sets deliberately included for this type of analysis.
MechDesigner calculates and displays any Kinematic data: position, displacement, linear velocity and angular velocity, linear acceleration and angular acceleration of points, lines and angles.
The Kinematic data can be graphed (up to four parameters against one independent variable) or be displayed as values or vectors next to the point or line. You can then watch the value change as you jog through the cycle or watch the vector indicate the direction of velocity or acceleration and the relative value as compared with other design options. You can also edit the design on the fly and watch the Kinematic data update immediately.
For example, you will want a pack to match a conveyor velocity (magnitude and direction) as it transferred. By watching the vectors you can be certain they match.
If you are picking up a label from a magazine, it is important that the tool rolls over the label. By plotting or showing the vectors you can be certain this is the case without any sliding.