Slide 2 Objective To achieve easy understandability and comprehensibility of the design process To have sufficiently good quality and error free CAD models Enable easy changes and lower update times Ensure continuity and security in the design process
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Slide 2
Objective
To achieve easy understandability and comprehensibility of the design
process
To have sufficiently good quality and error free CAD models
Enable easy changes and lower update times
Ensure continuity and security in the design process
Slide 3
Part Design – CATPart
Rule 1
Avoid using hybrid design
• Working in hybrid design environment means that you can create wire frame and
surface features within the same body
• Non-hybrid models are more flexible from a design/modification standpoint and usable
in all workbenches
This should NOT be
selected
Slide 4
Part Design – CATPart
Rule 2
If possible, all parts should be designed as “Solid features” in the Workbench
“Part Design”
• When surfaces have to be created, they have to be integrated in the tree structure in
the solid
• With this, control/modification of the geometry becomes simpler
Slide 5
Part Design – CATPart
Rule 3
Part Body should not be renamed
Part Body should have only ONE “Boolean” operation – Add
• The properties of the CATPart (mass, volume etc.) are defined by geometry in the Part
Body
Slide 6
Part Design – CATPart
Rule 4
Always rename Bodies and Geometrical Sets appropriate to what they stand for
Do not use special characters in the names. It is recommended to insert a “_”
between the words and not to leave any blank spaces
• It is recommended to rename all important elements in the geometry (e.g. point, plane,
line etc.)
• This will enable easy understanding of the tree and geometry
Slide 7
Part Design – CATPart
Rule 5
Draft and Fillet should be positioned as early as possible in the structure tree
Draft should come first and then the Fillet
Slide 8
Part Design – CATPart
Rule 6
Do not use the colors red or orange for the geometry. These colors are system
colors
Rule 7
Avoid using Ordered Geometrical Set. Use Geometrical Set with which
management of points, curves, surfaces etc. becomes easier. It is also
possible to transfer the Geometrical Set under a body which becomes
necessary sometimes to avoid “update cycles”
Rule 8
Avoid using commands like “MULTI-PAD”, MULTI-POCKET”, “REMOVE FACE”,
“REPLACE FACE”, “REMOVE LUMP”.
These functions access “implicit elements” which can cause update errors.
Slide 9
Part Design – CATPart
Rule 9
Do not use the commands “TRANSLATION”, “ROTATION” in Part Design
Problems
• File size increases
• Not very easy to update
Solution
• Use these commands from the GSD Workbench
Advantages
• No abnormal change in file size
• Easy to update
Slide 10
Part Design – CATPart
Rule 10 (Saving Condition of CATPart)
Rule 10.1
The Part Body should always be defined “In Work”
Rule 10.2
Only the result geometry should be in “SHOW” and all the other supporting
geometry should be in “HIDE”. All unnecessary elements should be deleted
and the file size should be as small as possible.
Rule 10.3
The View Projection type is set to “Parallel” and NOT “Perspective”
Slide 11
Part Design – Sketch
Rule 1
Try to always use only “Positioned” Sketches
Advantages –
• The position of the sketch is controllable and “defined”. The sketch position cannot be
moved with the compass
• More stable
• The position of the sketch can be changed using “Change Sketch Support”
Slide 12
Part Design – Sketch
Rule 2
Profiles in the Sketch should be defined completely
Use Sketch Analysis and ensure that the profile is “Iso-constrained”
Avoid using infinite lines in the sketch
Slide 13
Part Design – Sketch
Rule 3
A sketch should contain only one profile. For multiple profiles, multiple
sketches should be used
Advantages –
• More stable change behavior
• REPLACE for every profile separately and easily possible
Slide 14
Part Design – Sketch
Rule 4
Create the profiles in the Sketch as simple as possible