Kinematic FB | Add Motion-Dimension FB

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Kinematic FB | Add Motion-Dimension FB

Why use a Motion-Dimension Function-Block?


See also Motion-Dimension dialog-box


A Motion-Dimension FB identifies a Motion-Part

A Motion-Dimension FB can specify relative to a different Part, the:

Angle of a Rocker

- or -

Distance of a Slider

Add Motion-Dimension FB

Toolbar :

Kinematic FB toolbar

Add Motion-Dimension FB

Motion-Dimension FB (right of Graphic-Area >>)

Menu :

Add menu > Add Motion-Dimension FB



Dialog box :

See Motion-Dimension dialog-box

Notes:

To move, in the graphic-area:

Motion-Dimension : CTRL+ Drag the FB icon

Motion-Dimension FB icon : Drag the FB icon

GA-FB-MotDim-Design-Set

In the graphic-area:  if the Motion-Dimension parameter is an element in a Design-Set.

See also:

Add Pin-Joint - Special Condition and Add Slide-Joint - Special Condition

Selection Filters

Connecting FBs


Videos:

Add Motion-Dimension FB to a Pin-Joint

 


Add Motion-Dimension FB to a Slide-Joint

 

 


General Procedures - further notes:

tog_minusMotion-Dimension FB and Rocker

tog_minusMotion-Dimension FB and Slider


Special Procedures

Frequently, in a machine, there are coincident Joints. Two or more Rotating-Parts that rotate about one center, or two or more Sliding-Parts that slide along one axis.

SPECIAL PROCEDURES: Coincident Pin-Joints

If you want to specify the motion of each rotating part with a different Motion-Dimension FB, you must carefully plan as to which Points you select when you add the Pin-Joints,

Then, when you add the Motion-Dimension FBs, the Motion-Dimensions can reference the correct Parts.

SPECIAL PROCEDURES: Coincident Slide-Joints

If you want to specify the motion of each sliding part with a different Motion-Dimension FB, you must carefully plan as to which Lines you select when you add the Slide-Joints,

Then, when you add the Motion-Dimension FBs, the Motion-Dimensions can reference the correct Parts.

The Lines you select when you add the Slide-Joint determine between which two Parts you can specify the Motion-Dimension FB.

In addition, to guarantee the Positive Direction of the Slide-Joint, you must be careful as to in which direction you add Lines and Parts.

See Positive Direction of Slider Motion-Dimensions.


SPECIAL PROCEDURE 1:

GA-MotDim-SpecialCase-11

Result of Special Procedure 1:

The model shows

Two Motion-Dimension FBs

They reference the same Line in the Base-Part.

You can see the dimension of the two Motion-Dimensions FBs start at the green horizontal Line.

btn_delkeywordSTEP 1: Add Pin-Joints two times
btn_delkeywordSTEP 2: Add Motion-Dimension FB two times

SPECIAL PROCEDURE 2:

GA-MotDim-SpecialCase-14

Result of Special Procedure 2

We want the two Motion-Dimensions FBs:

Motion-Dimension 1:

From the Line in the Base-Part

To a Line in 'Part 1'

Motion-Dimension 2:

From the Line in 'Part 1'

To the Line in 'Part 2'

btn_delkeywordSTEP 1: Add Pin-Joint two times
btn_delkeywordSTEP 2: Add Motion-Dimension FB two times

btn_delkeywordPositive' Direction of Slide-Joints and Slider

The nursery rhyme : She swallowed a cat, that swallowed a mouse, that swallowed a spider, that swallowed a fly... will come to mind.