Easily switch between turning and milling
You can use standard conversational commands to switch as desired under NC program control between the milling and turning modes. There are practically no limitations. The control switches modes regardless of the current axis configuration and the TNC 640 adopts all internally required changes:
- Transition to diameter display
- Setting the datum in the center of a rotary table
- Locking the tool spindle and other machine-dependent functions
Familiar programming
You can program the turning operations conveniently under dialog guidance in HEIDENHAIN conversational format. Besides the standard path functions you can also use free contour programming (FK) to define the turning contour. With FK, you can easily create contour elements that were not dimensioned for NC.What’s more, you also have the contour elements recess and undercut for turning operations. Intuitive help illustrations support you in the definition of these contour elements.
Tools for turning are defined in the same way as those for milling, while the TNC 640 offers the user comprehensive graphical support.
Even grinding operations can be programmed as usual with HEIDENHAIN Klartext dialog guidance. If the contour is available as a CAD file, then you can easily import it with the aid of the CAD Import function (option).
Milling, turning, and grinding cycles
HEIDENHAIN controls have always been known for their comprehensive and technologically advanced package of cycles. The cycles of the TNC 640 include multi-step, frequently recurring operations. While programming cycles, you enjoy dialog guidance and informative help images that illustrate the required parameters. In addition to the well-known TNC milling and drilling cycles, the TNC 640 also provides numerous turning cycles for roughing, finishing, recessing, thread turning, recess turning, and more. These turning functions are based on software from the longproven HEIDENHAIN turning controls, allowing you to program even complex turning operations with ease on the machine.
The TNC 640's more complex turning cycles employ the same techniques as those used for milling. As a result, TNC programmers can build on their prior knowledge to rapidly enter the world of turning operations on a milling machine without retraining. The control also features grinding cycles, including:
- Define reciprocating stroke
- Activate wheel edge
- Profile dressing
