Parametric Modeling

1
Parametric Modeling

• 24. Things to remember

2
Workbenches

• Different purpose and different usage
• Some works for part, some works for assembly,
  some works for both, some works for other things
• Toolbars and pulldown menus
• Check the current workbench
• Reset toolbars
• ViewgtToolbarsgtCustomizegtToolbars
• Click on Restore all contents. and Restore
  position

3
Specification tree

• Keeps all information on generated objects
• Shows where you are
• Always pay attention to current working object
• It is possible to change the way it is structured
  but it is better to put objects in right position
  in the specification tree when they are being
  created.
• So, think ahead and organize before create
  something

4
Assembly and part

• Most engineering oriented CAD tools
• DP makes separate files for assembly and part
• Assembly as .CATProduct
• Part as .CATPart
• Use Save Management with assembly(product)

5
VBA

• Think about your logic
• Use record macro to collect sample code
• Record does not capture everything
• Complete code one by one
• Dont panic with error messages
• Programming always comes with debug
• Use breakpoint and watch for checking
• Typo and inconsistent naming usually make
  problems

6
Powercopy

• A PowerCopy is a set of features (geometric
  elements, formulas, constraints and so forth)
  that are grouped in order to be used in a
  different context, and presenting the ability to
  be re-specified according to the context when
  pasted.
• Remember reuse?

7
Why parametric model?

• Reuse of existing models supports standardized
  part and product families.
• 80 of all design tasks are variational
• Parametric and Feature-Based CAD/CAM by By Jami
  J. Shah, Martti Mäntylä

8
Reuse/Variable

• Reuse - Block
• Using same object
• Variable - Template
• Using template object with different parameters

9
Final Project

• A Parametric Stair in powercopy
• Should be able to change
• Floor to floor height
• Number of treads
• example
• C\Program Files\Gehry Technologies\Digital
  Project V1,R3\Project Standards\startup\Catalogs\A
  rchitectural Components\Stairs\OpenStairs