Step 6A1.2: Add the Tool's Motion

<< Click to Display Table of Contents >>

Navigation:  Getting Started Tutorials - MechDesigner > Tutorial 6: Cams: Flat, Barrel, Globoidal, 'Slot' > 6A1: Cam-shaft & Cam-Roller Follower >

Step 6A1.2: Add the Tool's Motion

Summary of this Step

To add a Linear-Motion FB, a Motion FB, and a Motion-Dimension FB to control the motion of the Tool-Part.

Video of this Step

Video: Add the Motion to the Tool

tog_minusAdd a Motion Dimension FB to the Slide-Joint
GST-6A2-CM-AddMotionDim-A

STEP 1: Start the Add Motion-Dimension FB command

GST-Icon-FB-MotionDimension

1.Mechanism-Editor: Click Kinematic-FB toolbar > Add Motion-Dimension FB

In the Command-Manager there are three selection-boxes: the name of the active command; a short hint to do the command; three(3)

Select the three(3) elements in the graphic-area. From top to bottom.

STEP 2: Select the three elements in the graphic-area

1.Click the symbol for the Slide-JointRed-14-1b (the narrow rectangle or the wide rectangle )

2.Click the start-PointRed-14-2 of the Line in the Base-Part

3.Click the start-PointRed-14-3 of the Line in the Sliding-Part

The three elements should be in the selection-boxes of the Command-Manager - see image to the left.

STEP 3: Complete the Command

1.Click OK-tiny-11-15 in the Command-Manager

OR

1.Right-Click in the graphic-area

The Motion-Dimension and the Motion-Dimension FB are in the graphic-area - see below.

 
GST-6A1-006
GST-6A2-203
tog_minusThe Motion-Dimension and Motion-Dimension FB in the graphic-area
GST-6A1-204

The Motion-DimensionRed-14-5 and Motion-Dimension FBRed-14-4

The Motion-DimensionRed-14-5 value is from start-PointRed-14-2 to start-PointRed-14-3

The color of the Part-Outline of the Slider changes to Green (or similar color) to indicate the Part is now kinematically-defined.

A Part that is kinematically-defined has a Mobility = 0.

Mobility = Degrees-of-Freedom – Motion-Dimension FBs

See also : Colors of elements in Application-Settings > Graphics > Graphic ColorsPart Solved, Part Not Solved

Note:

To move the Motion-Dimension FBRed-14-4 icon in the graphic-area: Drag the FB iconRed-14-4

To move the Motion-DimensionRed-14-5 in the graphic-area: CTRL+Drag the FB iconRed-14-4
tog_minusEdit the Base-Value of the Slider.
Shortcut menu

Shortcut menu

Motion-Dimension dialog

Motion-Dimension dialog

The Base-Value is the value of the Motion-Dimension, and the position of the Slider, when a wire is not connected to the input-connector of the Motion-Dimension FB.

STEP 1: Open the Motion-Dimension dialog

1.Double-click the Motion-Dimension FBRed-14-4  

or

1. Right-click the Motion-Dimension FBRed-14-4 icon

2.Click Edit ElementRed-14-6 in the shortcut menu (see image, left)

or

See How to open a dialog

The Motion-Dimension dialog is open.

STEP 2: Edit the Base-Value parameter

1.Motion-Dimension dialog: > Base-Value Red-14-7

2.Enter 40 [mm]

See also: Machine-Settings dialog > Engineering Units.

3.Click the Enter key on your keyboard

4.Click OK-tiny-11-15 to close the dialog
tog_minusAdd a Linear-Motion FB, and a Motion FB and Connect Wires
Three Function-Blocks - without wires

Three Function-Blocks - without wires

STEP 1: Add two(2) Function-Blocks to the graphic-area

The toolbar for Kinematic FBs is to the right(>>) of the graphic-area.

GST-Icon-FB-LinearMotion

1.Click Kinematic-FB toolbar > Add Linear-Motion FB ; and then click the graphic-area

GST-Icon-FB-Motion

2.Click Kinematic-FB toolbar > Add Motion FB ;  and then click the graphic-area

The Linear-Motion FBRed-14-1b and the Motion FBRed-14-2 are now in the graphic-area.

STEP 2: Connect the Function-Blocks with wires.

1.Hover and mouse-button-down on the output-connector of the Linear-Motion FB

2.Drag your mouse

3.Hover and mouse-button-up on the input-connector of the Motion FB

STEP 3: Do again to join the other two Function-Blocks:

1.Mouse-button-down on the output-connector of the Motion FB.

2.Move your mouse to hover above the input-connector of the Motion-Dimension FB.

3.Mouse-button-up.

The three(3) Function-Blocks are now connected with wiresRed-14-3Red-14-4
Three Function-Blocks - with wires

Three Function-Blocks - with wires

The Motion-Dimension (that controls the position of the Slider) is equal to the Base-Value parameter PLUS the motion-value at the input-connector of the Motion-Dimension FB.
tog_minusAdd a new Motion and rename it to Tool-Motion
MotionDesigner: Default Motion

Default Motion

Default motion:

You can link the Motion FB to any Motion name-tab.

The default motion has four Segments: to give a RiseRed-14-1b-DwellRed-14-2-ReturnRed-14-3-DwellRed-14-4 (R-D-R-D) motion.

Red-14-1b - Rise-Segment : X-axis 0 - 90º, Y-axis: 0 to 90mm*

Red-14-2 - Dwell-Segment : X-axis 90 - 180º, Y-axis: 90mm*

Red-14-3 - Return-Segment : X-axis 180 - 270º, Y-axis: 0 to 90mm*

Red-14-4 - Dwell-Segment : X-axis 270 - 360º, Y-axis: 90mm*

* units of the Y-axis are mm or degrees.
MotionDesigner : File toolbar

1: File toolbar

Usually, the default motion is not the motion that you need! I usually leave Motion0 untouched.

STEP 1: Add a new motion to the list of Motion name-tabs.

1.MotionDesigner: Click File menu > Add new Motion

There is now a Motion name-tab : Motion1
MotionDesigner: Motion name-tab

2: Motion name-tab

1.MotionDesigner : Right-click the Motion name-tab: Motion1

2.MotionDesigner : Click Rename in the shortcut menu.

3.Enter the name Tool-Motion and close the dialog.
3: New Motion name=tab: Tool-Motion

3: New Motion name=tab: Tool-Motion
tog_minusEdit Tool-Motion

GST-6A1-213

STEP 1: Edit the Motion to give a Rise of 50mm

1.Click: Blend-Point & Segment Editor toolbar > Open Blend-Point Editor

2.Blend-Point Editor : Click Select Next Segment or Select Previous Segment, to make Segment 2Red-14-1 the Selected-Segment

3.Blend-Point Editor : Enter : End-Position = 50 (from 90) , Click the ENTER key on your keyboard

4.Blend-Point Editor : Click Select Next Segment  to make Segment 3Red-14-2 the Selected-Segment

5.Blend-Point Editor : Enter End-Position = 50 (from 90) , Click the ENTER key on your keyboard

6.Blend-Point Editor: Click OK-tiny-11-15 to close the Blend-Point Editor

See also : Globe-www-24Tutorial 2: Introduction to the Flexible Polynomial Segment

tog_minusLink Tool-Motion to the Motion FB

GST-6A2-009

STEP 1: Link Tool-Motion to the Motion FB

1.Double-click the Motion FB to open the Motion FB dialog (or see How to open a dialog )

In the Motion FB dialog:

2.Motion FB dialog : Click the Select-Motion drop-down list-box

3.Motion FB dialog : Click Tool-Motion

4.Motion FB dialog : Click OK-tiny-13-17 to close the Motion FB dialog.

STEP 2: Run the Model

1.Run toolbar > Cycle

or

1.Use the ALT+C short-cut key combination  

The Slider will move with the R-D-R-D motion with a displacement of 50mm. The minimum Motion-Dimension is 40mm and maximum is 90mm.

Save your Mechanism