Course Introduction to virtual engineering Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Lecture and laboratory.

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Course Introduction to virtual engineering Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Lecture and laboratory.

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Course Introduction to virtual engineering Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Lecture and laboratory 5. Positioning and moving related shapes László Horváth university professor

Contents Keeping constraints at modification of related solid shapes Creating mechanisms by adding relative movements to solid shapes Positional relationships of solid shapes in model space Lecture Placing and modification of relationships at connection of components (VE5.1) Laboratory Definition of mechanism and simulation of kinematics (VE5.2) László Horváth ÓU-IAM

Positional relationships of solid shapes in model space 1 2 Under and over defined constraining are to be avoided. Required and sufficient number of relationships (constraints). László Horváth ÓU-IAM

Positional relationships of solid shapes in model space László Horváth ÓU-IAM Examples for relationships (constraints)

Positional relationships of solid shapes in model space Reference plane Coincidence Angle Contact Distance László Horváth ÓU-IAM

Change positional relationship László Horváth ÓU-IAM

Change positional relationship László Horváth ÓU-IAM

Definition of Part3 in the context of placed Part1 and Part2 László Horváth ÓU-IAM

Definition of Part3 in the context of placed Part1 and Part2 László Horváth ÓU-IAM

Definition mechanism László Horváth ÓU-IAM

Modified offset parameter value needs modified Part3 László Horváth ÓU-IAM

Syncronize then update the contextual Part3 László Horváth ÓU-IAM

Kinematics simulation of the modified mechanism László Horváth ÓU-IAM

Analysis results for placing constraints and mechanism László Horváth ÓU-IAM

Keeping constraints at modification of related solid shapes l1 ' A1 A2 l1 l2 A1 A2 l3l3 l2 ' A1 A2 l3l3 László Horváth ÓU-IAM

Adding relative movements to solid shapes at relationships C1 C2C3 R3 R1 R2 R4 C4 Structure of mechanism C – joint R – rod Rv – frame Rv=R1 Base feature Boundary representation Shape modifications Placing of parts Allowed movements (DOFs) László Horváth ÓU-IAM

Adding relative movements to solid shapes at relationships 1 translation Translational 1 rotation + 1 translation Cylindrical 2 rotations Universal 3 rotations Ball Joint type Degrees of freedom (DOFs) 1 rotation Rotational László Horváth ÓU-IAM

Relationships and kinematics of boundary represented feature driven solids Laboratory tasks VE5.1 and VE5.2 László Horváth ÓU-IAM

Parts to be placed: Part1 László Horváth ÓU-IAM

Parts to be placed: Part2 László Horváth ÓU-IAM

Parts to be placed: Part3 László Horváth ÓU-IAM

Parts to be placed: Part4 László Horváth ÓU-IAM

Part1 and part2 in the placing space László Horváth ÓU-IAM

Placing Part1 and Part2 László Horváth ÓU-IAM

Placing Part2 and Part3 László Horváth ÓU-IAM

Placing Part2 and Part3 László Horváth ÓU-IAM

Placing Part3 and Part4 László Horváth ÓU-IAM

Placing Part3 and Part4 László Horváth ÓU-IAM

Placing Part3 and Part4 László Horváth ÓU-IAM

Result of part placing László Horváth ÓU-IAM

Definition of kinematics László Horváth ÓU-IAM

Definition of kinematics László Horváth ÓU-IAM

Parts to be placed: Part4 László Horváth ÓU-IAM

Definition of kinematics László Horváth ÓU-IAM

Definition of kinematics László Horváth ÓU-IAM

Kinematics definition result László Horváth ÓU-IAM

Basic simulation of mechanism László Horváth ÓU-IAM

Basic simulation of mechanism László Horváth ÓU-IAM