Before and After: Graphic-Area and Kinematics-Tree


hmtoggle_plus1Note: Theme, Style, and Colours in the Topic

Edit menu > Application-Settings > General tab > Theme Options > Active Theme: Charcoal Dark Slate,

Edit menu > Application-Settings > Graphics tab > Display Colours :  (Background : White) ;  (Part-Unsolved : Blue) ; (Part-Solved: Green) ;( Joint-Solved : Green) ; (Joint-Unsolved : Blue)


Graphic-Area: before and after Add Gear-Pair

GA-AddGearPair-Prep-0

Graphic-Area before Add Gear-Pair.

Three (3) PartsRed-14-1bRed-14-2Red-14-3:
otwo Parts are kinematically-defined (Green Part-Outlines)
oone Part is not kinematically-defined (Blue Part-Outline).
Three LinesRed-14-4Red-14-5Red-14-6: a Line in each PartRed-14-1bRed-14-2Red-14-3
Two Pin-JointsRed-14-7Red-14-8: one Pin-Joint at the each end of LineRed-14-5 to join its start-Point and end-Point to two LinesRed-14-4Red-14-6
One dimension: LineRed-14-5 must have a dimension to specify its length. Use the Part-Editor to add a dimension to specify its length.

GA-AddGearPair-Added-1

Graphic-Area after Add Gear-Pair

PartRed-14-3 becomes a kinematically-defined Part ( its Part-Outline changes from Blue to Green)
PartRed-14-3 is termed a Geared-Rocker in the Kinematics-Tree.
The motion of PartRed-14-3 is defined by the motion of PartRed-14-1b and the gear-parameters that you define with the Gear-Pair dialog
The Pin-JointsRed-14-7Red-14-8 are the rotational-centres of the gears.
LineRed-14-5 joins the two gear centres and is called the Line-of-Centres.

Kinematics Trees: before and after Add Gear-Pair

Kinematics-Tree BEFORE Add Gear-Pair

Kinematics-Tree
BEFORE Add Gear-Pair

Kinematics-Tree before Add Gear-Pair

The Kinematic-Chain has two assemblies

Red-14-1b KinChain-Solved-small Solved : Rocker

Any rotating-Part that is kinematically-defined before you do Add Gear-Pair.

Red-14-2 KT-KinematicChain-Unsolved-icon-small17 Unsolved

A Part that is NOT kinematically-defined before Add Gear-Pair.
A Pin-Joint.

Notes:

LineRed-14-5 and PartRed-14-2 may move, or be stationary, relative to the Base-Part.

Lines or CAD-Lines

Kinematics-Tree AFTER Add Gear-Pair

Kinematics-Tree
AFTER Add Gear-Pair

Kinematics-Tree after Add Gear-Pair

The Kinematic-Chain now has two Solved Kinematic-Sub-Assemblies:

Red-14-1bKinChain-Solved-small Rocker - a kinematically-defined rotating-Part .

Any rotating-Part that is kinematically-defined before you do Add Gear-Pair.

Red-14-2KinChain-Solved-small Geared-Rocker - a kinematically defined rotating-Part.

Pin-Joint
Part
Gear-Pair element

Its motion is a defined by the motion of RockerRed-14-1b and the parameters defined in the Gear-Pair dialog.

 

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