<< Click to Display Table of Contents >> Navigation: Getting Started Tutorials - MechDesigner > Tutorial 2C: Kinematic Tools |
You can plot kinematic values for one or more machine cycles with a Graph FB.
You can also see kinematic values at a machine-angle.
The Element Properties dialog is a list of kinematic values for an element at the Master-Machine-Angle. Elements that have Element-Properties are: •Part, Pin-Joint, Slide-Joint, 2D-Cam, Part-Outline, Line, Circle, Arc, Point, Gear-Pair, Function-Blocks, Wire... |
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To show the Elements Properties dialog: Before MD16.1.370 In the graphic-area: CTRL + CLICK one element The Element-Properties dialog is now open. Note: The Element-Properties dialog does not open if you CTRL+Click more than one element. After MD 16-1-370 Move your mouse above any element in the graphic-area: The Element's Properties show in the Feedback Area > Extended Hints box. |
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Element-Properties dialog-box : Point |
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Element-Properties of a Point. In this case, the Element-Properties are of Point23', which is a child to Part3, which is a child to a Mechanism. Properties of a Point
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A Trace-Point is the path of a Point on the Mechanism-Plane for one machine-cycle. You can add many Trace-Point at one time.
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To Drag a Point in the graphic-area of the Mechanism-Editor: As a rule, you cannot drag any sketch-elements in the Mechanism-Editor. There is one exception to the rule when you do these steps.
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Video : Add Trace-Point
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You can show the Kinematic-Vectors of any Point* with the Point Properties dialog. * Point, start-Point, end-Point, center-Point, Motion-Point. STEP 1: Select the Point
STEP 2: Enable the Velocity and or Acceleration Vectors
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Velocity and Acceleration Vectors in the graphic-area
Scope
Velocity Vector Options
Note 1: If necessary, change the color of the Vectors to see the Vectors and their kinematic-values more clearly - see Application Settings > Graphics tab > Display colors |
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Top-Tip - make the vectors short to see only the magnitude of the vectors near to the Point. |
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Velocity and Acceleration buttons. |
To change the length of vectors: 1.Click the up/down button to increase/decrease the length of the vector.
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DO NOT USE UNTIL FURTHER NOTICE. To show the Dimensional Instant Radar Scale: In the graphic-area: ALT+Click The Instant-Scale shows next to your mouse-pointer. As you zoom-in or zoom-out the scale also auto-scales. There are 10 concentric circles. There are two thick circles, which show the actual dimension value at their radii. •Inner Dark Circle (50.000 in the image) is circle #5 •Outer Dark Circle (100.000 in the image) is circle #10 Linearly interpolate the dimensions for the other circles. Note: If the numbers have too may zeros, the inner number overwrites the outer number. You should reduce the number of digits. To reduce the number of zeros: Application-Settings > Number-Format. |
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MechDesigner compiles Parts and Joints into dyads. Dyads have two(2) Parts and three(3) Joints. You may find that the two Parts assemble correctly when you add the last joints. But, when you cycle your model, you may find that Parts cannot assemble at all points in the machine-cycle. The Kinematics-Tree indicates to you whether the dyads can assemble or not.
The Kinematics-Tree uses symbols to indicate three KINEMATIC STATES.
KINEMATIC-STATE 1 - There is a kinematic solution for the Kinematic-Chain at all points in the machine-cycle. |
KINEMATIC-STATE 2 - There is not a kinematic solution at all points in the machine-cycle. |
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KINEMATIC-STATE 3 - There is not a kinematic solution at this instant in the machine-cycle. |