buda University John von Neumann Faculty of Informatics
Óbuda University John von Neumann Faculty of Informatics Institute of Applied Mathematics Master in Engineering Informatics Course Modeling and design Lecture and laboratory No. 3 Connections Within and Between Solid Representations Dr. László Horváth http: //users. nik. uni-obuda. hu/lhorvath/
This presentation is intellectual property. It is available only for students in my courses. The screen shots in tis presentation was made in the CATIA V 5 és V 6 PLM systems the Laboratory of Intelligent Engineering systems, in real modeling process. The CATIA V 5 és V 6 PLM systems operate in the above laboratory by the help of Dassult Systémes Inc. and CAD-Terv Ltd. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Contents Lecture Definition of shape in context Associative and constrained parameters Control of Shape by Geometry and Dimension Constraint and its saving during model change Structure and relations at connection of solids Engineering connection between solid components Laboratory exercises MD 3. 1: Definition of constraints for engineering connection. Development of solid models for that purpose. MD 3. 2: Definition of constraints for engineering connection using template. Development of solid models for that purpose. MD 3. 3: Connection of units developed in exercises MD 3. 1 and MD 3. 2 by engineering connection. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Definition of Shape in Context Input (starting) shape Generated points, contours, surfaces, and solids Image, frame Physical shape Hand sketch Cloud of points Definition of shape Processing Generating surface Generating contours Generating topology as structure of geometry for B-rep. solid Definition of structure for connected solids Definition of connection László Horváth Definition of engineering connection Placing UÓ-JNFI-IAM DOF Functions http: //users. nik. uni-obuda. hu/lhorvath/
Associative and Constrained Parameters Relationships Implicit Explicit Parallel Tangential etc. Control parameter Calculated parameter Reference A Giving value for parameter Directly B=A/2 By algebraic expression Value calculated by the system C How reacts a model for modification by constraint? László Horváth UÓ-JNFI-IAM C min E C D max http: //users. nik. uni-obuda. hu/lhorvath/
Associative and Constrained Parameters László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Associative and Constrained Parameters László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension b b’ a a b=a a a László Horváth B<a UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Control of Shape by Geometry and Dimension László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Constraint and its Saving During Model Change C 2 Over constrained C 1 László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/ C 3
Structure and Relations at Connection of Solids 2 Contact R 1 Coincidence R Actual R R R László Horváth UÓ-JNFI-IAM Distance Angle http: //users. nik. uni-obuda. hu/lhorvath/
Structure and Relations at Connection of Solids Connected bodies 1 joint (Free body) 2 joints R 3 C 2 R 2 C 3 C – joint R – rod Rv – frame C 1 Rv=R 1 R 4 C 4 3 joints R 1 László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Structure and Relations at Connection of Solids Simple joints: Revolute, 1 R Prismatic, 1 T Cylindrical, 1 T+R Screw, 1 T+R, constrained Universal, 2 R, Spherical, 3 R. Curve and surface defined joints Slide along and roll around curve , 1 T+1 R Slide along, roll around és roll, 1 T+2 R Planar, 2 T+1 R Point on curve, 1 T+3 R Point on surface, 3 R+2 T Composite joints Gear, 2 Revolute + 1 constraint. Rack, 1 Prismatic + 1 Revolute +1 constraint. Double prism, 2 Prismatic + 1 constraint László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Engineering connection feature for components in the product structure on the physical (P) level of model Can be defined: On one component Between two or three components. Component: Shape Part Product Defined by: a set of components, an orientation or not, a set constraints Engineering connection is applied on model during PLM update. Consequently, not correct engineering connection will be detected in error during the PLM update. Methodology of engineering connection is considered as it is included in V 6 PLM system. This is representative and can be well experienced during laboratory exercises. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Parameters Engineering connection type Analytical (e. g. prismatic, revolute, cylindrical) Type Constraint Type Mode Value Support Lock/unlock Orientation Connection property Defined by curves and surfaces (e. g. point on curve, point on surface, slide curve, roll curve. ) Combined (e. g. screw, gear) Constraint Type Positional (coincidence, contact, offset) Angle (Angle, parallelism, perpendicularity, hinge) Coupling (e. g. fix (relative together, fix, symmetry) Curve (curvilinear distance, roll, slide curvilinear) László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Parameters Type Constraint Type Mode Value Support Lock/unlock Orientation Connection property László Horváth Constraint mode (a kind of function) Driving: constraint drives constraints which are contextual with it. Measured: constraint value comes from its definition and other constraints of the engineering connection. Controlled: defines the constraint controlled by kinematics relation. The constraint value is defined between bounds. UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Parameters Type Constraint Type Mode Value Support Lock/unlock Orientation Connection property Value In case of controlled mode, in case of angle or offset constraint. Lower and upper values can be specified. Support Geometry: axis system, circle, cone, cylinder, curve, surface Topology: vertex, edge, face Reference geometry: point, line, plane László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Parameters Type Constraint Type Mode Value Support Lock/unlock Orientation Connection property Lock/ unlock an EC type Lock: Modification of constraint definitions outside the engineering connection type definition is not allowed. Unlock: The Type is updated according to constraint definition modifications. Orientation Position first instance: the first selected instance will be positioned (default). Position second instance: the second selected instance will be positioned. Automatically position instances: the application defines which instance will be positioned. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Engineering Connection Between Solid Components Parameters Type Constraint Type Mode Value Support Lock/unlock Orientation Connection property László Horváth Connection property Distant, face-face. Fastened, bolt tightening. Weld: Spot weld, seam weld, curve weld, surface weld UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
Laboratory exercises Model name: MD 00 Sxxxx 00 Subject László Horváth Year S or F UÓ-JNFI-IAM Student Exercise: 31, 32, 33 http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Definition of constraints for engineering connection. Development of solid models for that purpose. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Mode driving. User defined engineering connection. Planar constraint is defined by topological entity. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Don’t forget: Engineering connection is applied on model during PLM update. Consequently, not correct engineering connection will be detected in error during the PLM update. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise After definition of coincidence of two lines mapped to edges the procedure identifies and set prismatic constraint. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Part which can move Mode: controlled. The third constraint is offset. It is defined between two planes which are mapped to topological faces. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Lower and upper values are specified for the controlled movement. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise The mechanism is suitable for simulation. However, definition of its degrees of freedom is not complete. László Horváth UÓ-JNFI-IAM The mechanism manager summarizes the degrees of freedom, the commands, and the engineering connections. http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise This is a real simulation. Actual value is shown for commends. Simulation process details malfunctions in message. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Modification of connected parts can be done as allowed by authorization. Modification propagates along contextual chains. Material is selected for parts from material palette. Definition of material is not thask in this exercise. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 1 laboratory exercise Items in PLM model base. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Definition of constraints for engineering connection using template. Development of solid models for that purpose. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Two part models are to be connected in a product model. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Four part models are available in the PLM system. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Two parts were placed as components in the new product model. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Items in PLM model base. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Two new parts as components in the structure of product. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Don’t forget: Engineering connection is applied on model during PLM update. Consequently, not correct engineering connection will be detected in error during the PLM update. László Horváth UÓ-JNFI-IAM Template was selected. Template sets the correct list of constraints. http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Mode: controlled. Connected elements are defined. Coincidence Angle Offset László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Lower and upper values are specified for the controlled movements. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise The mechanism manager summarizes the degrees of freedom, the commands, and the engineering connections. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise End positions of mechanism. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise Modification of connected parts can be done as allowed by authorization. Modification propagates along contextual chains. Material is selected for parts from material palette. Definition of material is not thask in this exercise. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 2 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Connection of units developed in exercises MD 3. 1 and MD 3. 2 by engineering connection László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise New product which represents connection of products defined in exercises 3. 1 and 3. 2. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Products defined in exercises 3. 1 and 3. 2 have been inserted in the model space for new product. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Don’t forget: Engineering connection is applied on model during PLM update. Consequently, not correct engineering connection will be detected in error during the PLM update. Revolute was selected from the choice of templates as offered by the modeling system. List of constraints were provided. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Definition of supports to be connected. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Definition of supports to be connected together with specification of lower and upper values of the controlled parameters. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise The new product in the PLM model base. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise The active mechanism representation recognizes joint and possible commands for movements. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Simulation of mechanism in the new product. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Simulation of mechanism in one of the connected products. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
MD 3. 3 laboratory exercise Simulation of mechanism in other connected product. László Horváth UÓ-JNFI-IAM http: //users. nik. uni-obuda. hu/lhorvath/
- Slides: 70