Cad cam Engineering WorldWide CAD CAM Inform

You can specify a location other than the workpiece boundaries that the skirt surface extends to. • ShutOff Extension options: – ShutOff Dist — Uniform offset – Boundary — Sketch or select • ShutOff Plane — Shutoff extension extends up to the shutoff plane • Draft Angle — Applies draft to Z-direction …

You can add or modify the direction that the skirt surface extends from the silhouette curve segments. • Extension directions can significantly alter the shape of the skirt surface. • Arrows denote direction at each segment vertex. – Orange – Default direction – Cyan – User-defined direction – Red – Tangent direction • Select …

The Tangent Conditions option enables you to specify surfaces on the reference model to which the resulting skirt surface must be tangent. • Specify which surfaces the skirt surface must be tangent to. • You can exclude adjacent curve segments from the tangent condition. Figure 2 – Tangent Condition Applied to Skirt Surface Figure 1 – …

The Extend Curves option provides a further level of control that enables you to exclude curves from being extended during skirt surface creation. • By default, all selected curves are included. • The Extend Curves option enables you to exclude curve segments. Figure 2 – Curve Segments Excluded Figure 1 – Default Skirt Surface …

You can use a skirt surface to automatically create the mold model parting surface. • The skirt surface is created using specified datum curves. – The silhouette curve parting line is usually selected. • Inner holes in the reference model are filled using silhouette curve loops. • Outer curve loops are extended to the workpiece boundaries. …

The Loop Selection option enables you to control the location of curve segments in reference to the part edges and specify which loops are included in the curve. • Loop selection: – Loops created at every shutoff location. – Status options: ♦ Included ♦ Excluded • Chain selection options: – Upper – Lower …

The Slides option enables you to specify mold volumes that already account for undercut geometry zones in the reference model. • The system excludes silhouette curve creation at slides. Figure 2 – Silhouette Curve without  Slides Specified Analyzing Silhouette Curve Options: Slides Figure 1 – Mold Model and Slider Mold Volumes Figure 3 …

A silhouette curve is created where the draft on the reference model instantaneously changes from positive to negative when viewed from the pull direction. • The automatic parting line is created using silhouette curves. • You must define the following: – Name – Surface references – Direction Figure 2 – Silhouette Curve …

You can create parting lines and parting surfaces to define where mold volumes are to be split. • Parting surface creation methods: – Automatic — Skirt Surface tool – Manual — Use surfacing techniques • Parting line creation methods: – Automatic — Silhouette Curve tool – Manual — Use datum …

You can swap inserts out of the same core and cavity in the mold model to produce similarly shaped parts. • Inserts are used as a cost-saving measure. • Inserts are used as a consideration for machining. Figure 2 – Viewing the Completed Insert Sketching Insert Mold Volumes Figure 1 – Viewing the Reference Model …