Add Measurement FB

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Add Measurement FB

Measurement FB

Use a Measurement FB to measure between sketch-elements in the same or different Parts.

You can measure the:

•Length of a Line, CAD-Line

•Radius of a Circle, arc

•Distance between two Points** §

•Distance between a Line* and a Point**

•Distance between two parallel Lines*

•Angle between two Points** §

•Angle between two Lines*

•Angle between three Points**

The output from the Measurement FB includes the dimension and its first and second motion derivatives.

§ - There are two(2) output-connectors when you measure between two Points* - see more details below

* - Line, CAD-Line, X-axis, Y-axis.

**  - Point, start-Point, end-Point, center-Point, and/or Motion-Point.

Add Measurement FB

Measurement FB between two Points

Measurement FB between two Points

Add Mearurement Fb

1.Click Kinematics FB toolbar > Measurement FB

or

1.Click Function-Blocks menu > Measurement (FB)

2.Click the sketch-element

or

2.Click the sketch-elements that you want to measure

3.Click the graphics-area.

The Measurement FBRed-14-1b and DimensionRed-14-2 are now in the graphics-area.

In this example, the Measurement FBRed-14-1 and DimensionRed-14-2 is between two PointsRed-14-3Red-14-4

Note:

In the graphics-area, to move the:

•Measurement FBRed-14-1b – Drag the FBRed-14-1

•DimensionRed-14-2 – CTRL + Drag the FBRed-14-1 or the DimensionRed-14-2.

Measurement FB

btn_delkeywordLinear Distance

* Line, CAD-Line, X-axis, Y-axis

** Point, start-Point, end-Point, center-Point, Motion-Point.

Image

Sketch-Elements

Measurement Dimension
Length or Radius

Length or Radius

1.Click a Line or CAD-Line

Length of the Line*

1.Click a Circle or Arc

Radius of the circle or arc.
Distance - Point & Line

Distance - Point & Line

1.Click a Point**

2.Click a Line*

Perpendicular Distance between the Line and Point.
Distance - 2 Points

Distance - 2 Points

1.Click a Point**

2.Click a Point**

Linear Distance and Angle of two Points.

A Measurement FB between two Points** has two output-connectors:

- Top output-connector: distance between two Points, and first and second motion-derivatives

- Bottom output-connector: angle between two Points, and first and second motion-derivatives
btn_delkeywordAngle between two(2) Points
Distance - 2 Points

Distance - 2 Points

1.Click a Point**

2.Click a Point**

Linear Distance and Angle of two Points.

A Measurement FB between two Points** has two output-connectors:

- Top output-connector: distance between two Points, and first and second motion-derivatives

- Bottom output-connector: angle between two Points, and first and second motion-derivatives
btn_delkeywordAngle between three(3) Points

Angle between three(3) Points** - Internal Angle and External Angle.

** Point, start-Point, end-Point, center-Point

Image

Sketch-Elements

Measurement Dimension
Internal Angle - 3 Points

Internal Angle - 3 Points

Three Points

1.Click 'Apex' Point** Red-14-1b

2.Click Point** Red-14-2

3.Click Point** Red-14-3

Internal Angle

The angle is from Red-14-2 to Red-14-3 in a Counter-Clockwise direction.
External Angle - 3 Points

External Angle - 3 Points

Three Points

1.Click 'Apex' Point**Red-14-1b

2.Click Point** Red-14-2

3.Click Point** Red-14-3

External Angle

The angle is from Red-14-2 to Red-14-3 in a Counter-Clockwise direction.
btn_delkeywordAngle between Two Lines

Image

Sketch-Elements

Measurement
Angle - 2 Lines

Angle - 2 Lines

Two Lines

1.Click a Line*Red-14-1b

2.Click Line** Red-14-2

Angle - from eight(8) possible Angles.

To display one of eight angles:

Before you click in the graphics-area to place the Measurement Dimension and FB ...

... move your mouse-pointer around the apex of the two lines:

CASE 1: Counter-clockwise : 4 angles < 180° : the Acute, Obtuse, Supplementary and Vertical angles

CASE 2: Clockwise : 4 angles > 180° : the reflex angles - or the angles that are external to those angles of CASE 1.

Video: Eight Measurement Angles between two Lines:

Add Angle Dimensions between two Lines

 

How to use the Measurement FB:

You can connect a wire from the output-connector of a Measurement FB:

... to plot the Position, Velocity and Acceleration of the dimension with a Graph FB - see Note 1 below

... to the input-connector of a Motion FB. The motion-data from the Measurement FB is the independent variable for a Motion in MotionDesigner, More usually, the independent variable is the output of a Linear-Motion FB - see Note 2 below

... to the input-connector of a Motion-Dimension FB - see Note 2 below

Note 1:

To plot the Position, Velocity and Acceleration of the Dimension in the same graph.

1.Drag a wire from the same output-connector of the Measurement FB three times to different input-connectors of a Graph FB,

2.Use the Y–axis display options in the Graph Interface to display the three different motion-derivatives.

Note 2:

Check the messages in the Feedback-Area.

“1 Mechanism dependencies detected”. This means, that the motion of a kinematic-chain is a function of (dependent on) the motion (measurement) of a different kinematic-chain. It is usually called Motion-Dependency.