<< Click to Display Table of Contents >> Navigation: MechDesigner Reference & User Interface > Dialogs > Dialog: Function-Block: Continuous-Crank |
See also Add Continuous-Crank
It is often the case, in a multi-part mechanism, that the motion is designed for the Tool-Part (the Part with the tooling). The Tool-Part is often driven by a different Part in the mechanism, which is the Driving-Part. We derive for you the motion of the Driving-Part from the Tool-Part by inverse-kinematics. Usually, with a Cam mechanism, the Driving-Part is an oscillating Cam-Follower that is moved by a Cam. However, there is also the case in which the Driving-Part rotates fully, but with a non-uniform speed. This is a special-case. To make sure this can happen, the Driving-Part must be exactly the correct length, and its motion, also derived by inverse-kinematics from the motion of the Tooling, is more complex. This is one application of the Continuous-Crank FB. |
Edit the Continuous-Crank FB:
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The Continuous-Crank dialog is now open.
![]() Continuous-Crank dialog - not enabled |
STEP 1: Select Crank Behavior and Direction Crank Behavior
Crank Direction
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![]() Continuous-Crank dialog- enabled |
STEP 2: Activate the Not Selected box
STEP 3: Click a Part that you want to be the Continuous-Crank
The Part immediately changes its length so that it can rotate continuously or oscillate by ~180º. If there is a problem, see Messages at the bottom of the dialog. STEP 4: Confirm the behavior is as expected
STEP 5: Click Messages at the bottom of the dialog: When you select a Part as the Continuous Crank, there is be a message at the bottom of the dialog.
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![]() Continous-Crank dialog |