Cranks, Rockers, Sliders

In this step, we connect these Function-Blocks (FB):

A Linear-Motion FB
A Motion-Dimension FB
A Motion FB and a Gearing FB

These FBs, together, specify how and when a Crank, Rocker or Slider moves.

tog_minusA Rocker

Icon-FB-LinearMotion

+

Icon-FB-Motion

+

Icon-FB-MotDim-Rocker

A Rocker is a Part that rotates around a Pin-Joint with a motion as defined by motion-values at the input-connector of a Motion-Dimension FB.

Rocker-Basic

The image shows a Rocker. To add a Rocker:

2.The Base-Value is 40ºRed-14-2
3.Add a Motion FBRed-14-3 to the graphic-area.
4.Add a Linear-Motion FBRed-14-4 to the graphic-area.
5.Drag wires to connect the Linear-Motion FB to the Motion FB to the Motion-Dimension FB

To edit the FBs, double-click the FB icons or see How to open an Element's dialog-box

 

'Expand' then 'Play'

 

tog_minusA Crank

Icon-FB-LinearMotion

+

Icon-FB-MotDim-Rocker

 

In MechDesigner, the Crank is a simplified Rocker. It rotates at constant speed.

BasicCrank

The 'Crank':

1.Add a Part, Pin-Joint and Motion-Dimension FB
2.Edit the Base-Value with the Motion-Dimension FB dialogRed-14-1b
3.Add and connect a Linear-Motion FBRed-14-2 and, optionally, a Gearing FBRed-14-3, to the input of the Motion-Dimension FB

 

 

tog_minusA Slider

Icon-FB-LinearMotion

+

Icon-FB-Motion

+

Icon-FB-MotDim-Slider

A Slider is a Part that reciprocates, back-and-forth, along a Slide-Joint.

BasicSlider

The image shows a Slider. To add a Slider:

The initial position, here 110mmRed-14-2, is the 'Base-Value'

2.Add a Motion FBRed-14-3 to the graphic-area
3.Add a Linear-Motion FBRed-14-4 to the graphic-area.
4.Connect the Linear-Motion FB to the Motion FB to the Motion-Dimension FB.

 

'Expand' then 'Play'

 

See the video to the left.

Tutorials and Reference Help Files for MechDesigner and MotionDesigner 14.2 + © Machine, Cam, Mechanism, and Motion Design Software by PSMotion Ltd