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Consider a very typical scenario when you are working with Onshape and VisualCAMc.
•You load an Onshape part document into VisualCAMc and create machining operations.
•Subsequently you modify the Onshape part document due to a design change.
•You then go to the VisualCAMc app to update your toolpaths.
In this scenario, you want to update the toolpath operations easily without having to start over. VisualCAMc handles this in the following ways.
When VisualCAMc is invoked, it detects any changes that were made to the Onshape parent part. If changes are detected, VisualCAMc automatically replaces the older version with the modified version.
Onshape geometry objects such as edges and sketches can be utilized in creating one or more machining operations in VisualCAMc. For example, in the case of a 2½ Axis Pocketing operation, a group of edges is selected to create the pocketing toolpath. When edits are made in Onshape, it is quite possible that the sketch defining the pocket was modified. VisualCAMc handles this case in a couple of different ways:
1.A Non-destructive Edit: If the object ID in Onshape is still the same, even though the underlying geometry has changed, VisualCAMc will continue to use this object but will recognize the new geometry. Using the 2½ Axis Pocketing example, if the sketch dimensions for the length and/or width of the pocket have changed, VisualCAMc will propagate these changes to the pocketing toolpath automatically. Onshape dimensional edits fall into this category.
2.A Destructive Edit: If the object ID in Onshape is changed, VisualCAMc will lose the association with the object and the regions will have to be reselected and the toolpath operation regenerated. We call this a destructive edit. Using the 2½ Axis Pocketing example, here is a list of possible destructive edits:
•A geometry type is changed (a square pocket is now circular).
•A geometry type is added (a rectangular pocket now has filleted corners).
•A new feature is added (a slot cuts through the pocket).
•A sketch or feature is suppressed (the pocket is now removed).