External Cycle : The tool moves from the outside the inner part of the component.
Internal cycle : The tool moves from the inner part of the component to outside.
Before proceed with internal cycle is necessary create a central hole in the component.
In important also use a tool with dimension compatible with this hole diameter.
You can find this information in tool catalogue .
To add this operation, from [MENU] -> Lathe -> External or Internal Turning , depending on your needs.
See related article on how to associate geometry to an operation, and also page about [Step Profile] and [Coordinate] pattern. They are useful with generic turning operation.
Here the screen related to external / internal turning machining.
Generic turning accept as geometry both open profiles and closed profiles.
It's suggested to link just a single profile in geometry list.
Turning direction - Traditional : Tool direction it's from Z+ to Z-
Turning direction - Reverse : Tool direction it's from Z- to Z+ , you need to select a compatible tool when you change this property.
Profile Start/End Extension : A tangent extension will be added to start/end of selected geometries
Apply Fillet on sharp corner : Where applicable, a fillet will be created in sharp corner.
Toolpath Limit : With this you can define the limits of working area.
Without Limit :
With Limit :
Operation 1 of 2 : Roughing
Finish Allowance X / Z : It's the material thickness left by the roughing tool for the finishing operation.
Roughing Macro : Where applicable , it will print G71 macro code in output code instead of simple movements
Finish with same tool : Finishing allowance material will be removed by the roughing tool
Operation 2 of 2 : Finishing
Reverse direction on vertical wall : When enable , the turning direction will be inverted in 90° profile element. In some context , this may reduce tool vibration.
Vertical wall threshold : Will be considered only elements with length bigger than this value.
Multiple finishing passes : It create multiple finishing passes. The distance between passes is determined by finishing allowance thickness.
example : If you have a 0.3mm of finish allowance and 3 finish passes. Toolpath will generate 3 passes with a 0.1mm distance between them.