Drive Surfaces Offset
Introduction
This topic explains the drive surfaces offset option, provides an example, and links to related topics.
Drive surfaces offset
The Drive Surface Offset is a virtual offset to the drive surface. This parameter allows you to specify the amount of material or stock allowance to remain on the drive surface. The offset can be understood as a 3-dimensional offset which expands the drive faces in all directions. For example, with a drive surface offset of 0.3 units, the tool will not come closer than 0.3 units to the selected drive faces.
Example
The offset (3) from the drive surface (1) is only as accurate as the machining accuracy (tolerance). That means that the offset can deviate with the selected tolerance (2). For example, with an offset of 0.1 units and a cut tolerance of 0.1 units the final offset can go from 0.0 to 0.2 units.
- The offset is always considered within
gouge-checking tool-part clearances and the Stock to Leave value.
All values are added together, so in the end there is an overall clearance
consisting of the Drive Surface Offset plus the Stock to Leave value
plus the Tool Clearance.
- A positive drive surface offset allows stock to remain. A negative value lets the tool plunge through the surface and thus causes collisions.
