The Parting Lines tool checks draft and adds
parting lines. Parting lines separate the core from the cavity.
These requirements ensure ejection of the model from the
mold:
- All faces must draft away from the parting line that divides
the core from the cavity.
- Design specifications must include a minimum draft angle to
test against.
- Cavity side surfaces must display a positive draft.
- Core side surfaces must display a negative draft.
- All surfaces must display a draft angle greater than the
minimum specified by the design specifications.
- No straddle faces must exist.
-
Click Parting
Lines
(Mold Tools
toolbar).
- Select the Top plane in the FeatureManager design tree for Direction of Pull in the PropertyManager.
If necessary, click Reverse Direction 
so the preview arrow points up.
- Set Draft Angle
to 0.5.
-
Click
Draft
Analysis to check the model for draft.
Under Parting Lines,
the eight edges that define the path of the parting line appear for
Edges
. Under Message, a message warns that you might need
to create shut-off surfaces.
If the model includes
a closed-loop chain of edges that runs between positive and negative faces
(without straddle faces), the parting line is generated along that chain of
edges.
A
chain of edges is a series of connecting edges. If the connecting edges are
continuous, they form a closed loop. You can also have connecting edges that
form a partial
loop.
However, a system-generated parting line does not guarantee that all faces
have sufficient
draft.
Optional
Information About Straddle Faces
Straddle faces are faces that contain
both positive and negative types of draft. Typically, you need to split a
straddle face into two separate faces to prevent the part from being trapped
in the mold. You can split a straddle face:
- Manually, using Split
Line
(Curves toolbar).
- Automatically, by selecting Split faces in the Parting
Line PropertyManager, then specifying to split at:
- The transition between positive and negative
draft
- A specified draft angle
- Manually, in the Parting
Line PropertyManager, by selecting vertices, sketch
segments, or splines in the graphics area for Entities To Split
.