buda University John von Neumann Faculty of Informatics
Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Course Introduction to virtual engineering Lecture and laboratory 5. Positioning and moving related shapes László Horváth university professor http: //users. nik. uni-obuda. hu/lhorvath/
Contents Lecture Positional relationships of solid shapes in model space Keeping constraints at modification of related solid shapes Creating mechanisms by adding relative movements to solid shapes Laboratory Placing and modification of relationships at connection of components (VE 5. 1) Definition of mechanism and simulation of kinematics (VE 5. 2) László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Positional relationships of solid shapes in model space 2 Required and sufficient number of relationships (constraints). László Horváth 1 ÓU-IAM Under and over defined constraining are to be avoided. http: //users. nik. uni-obuda. hu/lhorvath/
Positional relationships of solid shapes in model space Examples for relationships (constraints) László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Positional relationships of solid shapes in model space Coincidence Reference plane Contact László Horváth Distance ÓU-IAM Angle http: //users. nik. uni-obuda. hu/lhorvath/
Change positional relationship László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Change positional relationship László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of Part 3 in the context of placed Part 1 and Part 2 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of Part 3 in the context of placed Part 1 and Part 2 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition mechanism László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Modified offset parameter value needs modified Part 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Syncronize then update the contextual Part 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Kinematics simulation of the modified mechanism László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Analysis results for placing constraints and mechanism László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Keeping constraints at modification of related solid shapes A 2 l 1 ' A 1 A 2 A 1 l 2 ' l 2 l 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Adding relative movements to solid shapes at relationships Boundary representation Base feature Shape modifications Placing of parts Allowed movements (DOFs) Structure of mechanism C – joint R – rod Rv – frame R 3 C 2 C 3 R 4 R 2 C 1 C 4 R 1 László Horváth ÓU-IAM Rv=R 1 http: //users. nik. uni-obuda. hu/lhorvath/
Adding relative movements to solid shapes at relationships Joint type Rotational Translational Cylindrical Universal Ball Degrees of freedom (DOFs) 1 rotation 1 translation László Horváth 1 rotation + 1 translation ÓU-IAM 2 rotations 3 rotations http: //users. nik. uni-obuda. hu/lhorvath/
Relationships and kinematics of boundary represented feature driven solids Laboratory tasks VE 5. 1 and VE 5. 2 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Parts to be placed: Part 1 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Parts to be placed: Part 2 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Parts to be placed: Part 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Parts to be placed: Part 4 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Part 1 and part 2 in the placing space László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 1 and Part 2 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 2 and Part 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 2 and Part 3 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 3 and Part 4 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 3 and Part 4 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Placing Part 3 and Part 4 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Result of part placing László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of kinematics László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of kinematics László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Parts to be placed: Part 4 László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of kinematics László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of kinematics László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Kinematics definition result László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Basic simulation of mechanism László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Basic simulation of mechanism László Horváth ÓU-IAM http: //users. nik. uni-obuda. hu/lhorvath/
- Slides: 38