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PTC Creo ModelCheck Teacher: Start Part and Start Assembly Items
Start part and start assembly items are a group of features that your company has set as a standard starting point for every part and assembly. These features are normally added to the model when it is created, and can be automated with the help of a map key or a menu pick in Creo Parametric.
Start features can be any of the following:
Datum Planes
Datum Coordinate Systems
Datum Axes
Datum Points
Datum Curves
Parameters
Layers
Views
In many cases, you will have different requirements for your start features depending on the type of model you are creating, or whether it is a part or assembly.
Using Start Features has many advantages including:
It makes it easier for other users to understand your model.
It makes it easier for you to assemble parts together because assembly references can be identified in a standard manner.
Maintaining company wide consistency.
Ensures that default datum planes are always used.
Creo ModelCHECK supports the following start features:
Feature
Name for Part Mode
Name for Assembly Mode
Datum Plane
PRT_DATUM_PLANE
ASM_DATUM_PLANE
Datum CSYS
PRT_DATUM_CSYS
ASM_DATUM_CSYS
Datum Axis
PRT_DATUM_AXIS
ASM_DATUM_AXIS
Datum Point
PRT_DATUM_POINT
ASM_DATUM_POINT
Datum Curve
PRT_DATUM_CURVE
ASN_DATUM_CURVE
Parameter
PRT_PARAMETER
ASM_PARAMETER
PDM Parameter
PRT_PARAM_PDM
ASM_PARAM_PDM
NULL Parameter (non empty)
PRT_PARAM_NULL
ASM_PARAM_NULL
Layer
PRT_LAYER
ASM_LAYER
View
PRT_VIEW
ASM_VIEW
Your company has the following standard start features:
Three default datum planes called DTM1, DTM2, DTM3
A PDM designated parameter called PN which is the model's part number
Three views called TOP, SIDE and ISO