Basic Wire EDM Machining
To create toolpaths with Wire EDM, you need geometry that represents the part you want to machine. The only entities necessary for basic machining are curves.
The capabilities of your wire EDM machine determine which curves you select. Those curves, either open or closed, define the shape (or contour) of your part.
• You can select one contour, with the wire straight up and down, to create a part with vertical walls.
• You can select one contour, with the wire tilted at a constant taper angle (implying a second, offset contour above or below the contour you select), to create a part with drafted walls.
• You can select two separate contours to create a part with a different shape on the top and bottom.
• You can select several curves that together define the upper part profile.
• You can select several curves that together define the lower part profile.
This section describes more advanced machining applications.
• Controlling Entries, Exits, and Traverses Describes how to control the motions of the wire as it enters, exits, and moves around the part profile.
• Adding Offsets
Describes three methods you can use to offset the wire from the part.Each one allows adjustments at the machine controller, if necessary.
• Adding Bridges
Explains how to define bridges, and how each method affects the order of operations for roughing and skimming passes.
• Synchronizing Two Contours
Describes how to use synchronization, the two-contour method of machining (4-axis). This section explains how to let the software position the wire between your contours, or how to specify points yourself to
control the wire’s orientation.
• Creating and Using Pass Files
Explains how to create and use pass files to define as many skim passes as you require for your part.
• Modifying Machining Conditions On-the-Fly
Explains how to use modify points to notify the software that you want to run a command file at a particular point in the machining process. This section describes the software in detail and lists the command file
variables you can use.
• Using Special Features
Describes a few special features of Wire EDM that stand alone in their usefulness. These include how to maximize flushing by setting the upper wire guide to follow the top of a part profile that varies in Z; how
to dynamically monitor the wire’s contact length so generator adjustments can be made later, if necessary; and how to correct areas in tight corners where the wire may dwell and overburn.
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