 Controlling External References (227)Time:
1 hour
|
Description: The Reference Control
dialog determines the scope and handling for the creation of external
references.
It is a
valuable tool to restrict the creation of external references while using a top-down
technique. The system default of All permits any user to establish any
external reference to any part, sub-assembly, or top-level assembly. While this
default is very indulgent, it is not very forgiving. A working knowledge of Environment
Settings and Object Specific Settings can greatly reduce the number of poor
external references. This module will clarify the tricky scope settings, as well as
explain the repercussions of leaving the checkmark next to Backup
Forbidden References.
Prerequisite: Module 226: Defining External References |
| Master Model Merge (230) Time:
1.5 hour
|
Description: A Master
Model Merge is a top-down technique with several different applications. First,
it is a technique to smooth over the rivalry between Industrial Designers and Mechanical
Engineers both trying to drive the design. Later, as the designer surface is
slightly modified, the engineering model will ideally update without error. Second,
the Master Model Merge can also be used to create a single component from a
weldment of several components. The resulting Merged component is used by
some organizations to perform a rudimentary stress anlysis. Third, an External
Merge is excellent for cast and machined parts. The cast part is sent to the
foundry. The machine part is sent to the machine shop. Both the traditional Master
Model Merge and the new External Merge are covered in this module. Prerequisite:
Basic Design plus 120 hours. |
| Copy Geom Feature (231) Time: 2
hours
|
Description: A Copy
Geom feature is a desirable top-down technique that allows a user to create component
features while using the geometric references from an entire assembly. All types of
geometry including datum planes, axes, edges, and surfaces, etc. can be copied from an
assembly component using a Copy Geom feature. Upon copying these
references, the selected geometry becomes available at the part level. The Copy
Geom concept permits a user to work with a single part In Session, yet have
all of the necessary references from an entire assembly. Since the assembly and
other components are not in memory, this top-down technique speeds regeneration time.
This module discusses the creation of Copy Geom features and warns each
user about the significant repercussions of its misuse.
Prerequisite: Basic Design plus 120 hours. |
| Publish Geom Feature (232) Time:
1 hour
|
Description: A Publish
Geometry feature is a preferred top-down technique with a long list of advantages, and
a short list of disadvantages. The Publish Geom concept is used to publish
geometry that is stable, has been reviewed, and is ready to submit to the masses.
The concept is similar to publishing a textbook. Many organizations have adopted the Publish
Geom concept to avoid the series of feature failures caused by the unregulated use of
a Copy Geom feature. A Publish Geom switches the responsibility to the
author of a component thereby minimizing the possibility for failed features.
Prerequisite: Module 231: Copy Geom Feature |
| Surface Copy (233) Time: 30
minutes
|
Description: A Surface
Copy is a top-down technique that allows a user to create a feature on a model while
referencing the surface geometry from an assembly component. It permits a user to work
with a single part In Session, yet have all of the necessary surface references
from an entire assembly. Since the assembly and other components are not in memory, this
top-down technique speeds regeneration time. While a top-down Surface Copy has unique
functionality not found in either a Copy Geom or a Publish Geom, its
external references can be very deceiving. This module will clarify the unique
characteristics and pitfalls of a top-down Surface Copy.
Prerequisite: Basic Design plus 120 hours. |
| Shrinkwrap
Feature (235)
Time: 1 hour
|
Description: An Export
Shrinkwrap is used to kill the parametrics for an entire assembly
while creating a single .prt file.
It is a technique often used to protect proprietary information.
Alternately, an External Shrinkwrap is a Large Assembly
Management technique. It is used to replace a fully parametric sub-assembly with its
lightweight shrinkwrap, thereby speeding regeneration time for the
top-level assembly. There are
several other diversified applications for this feature. This module covers the Export
Shrinkwrap, External Shrinkwrap,
and the traditional
Assembly Shrinkwrap.
Prerequisite: Basic Design plus 40 hours. |
| Inheritance
Feature (236) Time: 1 hour
|
Description:
Variations of a single part can be created using an Inheritance
feature. Each variation is parametrically linked, and reuses the
original part geometry. Several different applications will be
presented in this session. The Inheritance feature was new
to release 2001. Many organizations have adapted their standards to incorporate this
feature.
Prerequisite: Basic Design plus 120 hours. |
| Notebooks
(formerly known as Layouts) (240) Time: 1.5 hour
|
Description:
A Notebook is a central location for engineering information.
The communication of information from a centralized location is an
important aspect of top-down design. A Notebook is a top-down
technique that permits the distribution of information/tasks to different
design group members to perform concurrent modeling. Using a layout,
certain design options can be documented and possibly investigated,
without modeling detailed parts or involving the entire
assembly. This module serves to introduce the user to
Notebooks. It
represents and an integration of two concepts involving Notebooks and
Skeletons.
Prerequisite: Module 241: Skeletons |
| Skeletons (241) Time: 1.25 hour
|
Description: The use of a
skeleton is an advanced top-down technique. It can permit a user to gain certain
engineering knowledge before any parts are modeled. Datum curves, points, axes,
planes, and surface features are commonly found in a skeleton. A skeleton can be an
effective technique to design and/or study the interaction of components at their extremes
of motion. Furthermore, a skeleton can also be used to setup space claims for an
assembly. Finally, the use of a skeleton can completely change the parent/child
relationships for an assembly. Whereas a component typically becomes a child of the
previous component, using a skeleton, a component becomes a child of the skeleton.
The follow list of prerequisites is necessary to successfully incorporate a skeleton.
Prerequisite: Basic Design plus 120 hours. Module 127: Creating
Components from within an Assembly, Module 138: Assembly Level Features,
and Module 227: Controlling External References. |
