Add Gear-Pair and Gear-Pair elements


hmtoggle_plus1Theme, 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]


Elements and Kinematics-Tree BEFORE Add Gear-Pair

GA-AddGearPair-Prep-0

Elements before Add Gear-Pair

Three [3] Parts1s-red2s3s:
otwo Parts are kinematically-defined [Green Part-Outlines]
oone Part is not kinematically-defined [Blue Part-Outline].
Three Lines4s5s6s: a Line in each Part1s-red2s3s
Two Pin-Joints7s8s: one Pin-Joint at the each end of the 'middle' Line5s to join Points at the ends the other two Lines4s6s
One dimension: the 'middle' Line5s must have a dimension to specify its length. Use the Part-Editor to add a dimension to specify its length.
Kinematics-Tree BEFORE Add Gear-Pair

Kinematics-Tree
BEFORE Add Gear-Pair

Kinematics-Tree before Add Gear-Pair

The Kinematic-Chain has two assemblies

1s-red KinChain-Solved-small Solved : Rocker

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

2s KT-KinematicChain-Unsolved-icon-small17 Unsolved

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

Notes:

Line5s and the Part2s may move, or is stationary, relative to the Base-Part.

Lines or CAD-Lines


Start and do the command: Machine elements toolbar > Add Gear-Pair.

COMMAND-MANAGER - before you select the elements

COMMAND-MANAGER - before you select the elements

 

COMMAND-MANAGER - after you select the elements.

COMMAND-MANAGER - after you select the elements.


Elements and Kinematics-Tree AFTER Add Gear Pair

GA-AddGearPair-Added-1

Elements after Add Gear-Pair

Part3s becomes a kinematically-defined Part [ its Part-Outline changes from Blue to Green]
Part3s is termed a Geared-Rocker in the Kinematics-Tree.
The motion of Part3s is defined by the motion of Parts1s-red and the gear-parameters that you define with the Gear-Pair dialog
The Pin-Joints7s8s are the rotational-centres of the gears.
The Line5s between has a derived-name: Line-of-Centres.

KT-GearedRocker

Kinematics-Tree after Add Gear-Pair

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

1s-redKinChain-Solved-small Rocker - a kinematically-defined rotating-Part .

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

2sKinChain-Solved-small Geared-Rocker - a kinematically defined rotating-Part.

Its motion is a function the Rocker1s-red and the parameters defined in the Gear-Pair dialog.

Pin-Joint
Part
Gear-Pair element

Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd