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Since its inception, the Heidenhain TNC 640 CNC mill-turn has quickly grown into a premium high-end CNC control for efficient, high-precision milling operations. It significantly simplifies the milling process, its functions are particularly user-friendly as it also allows turning operations to be carried out on a single machine. The TNC 640 is designed for high-speed 5-axis integral machining on machines with up to 18 axes plus 2 spindles. The latest version (5) of the software for mill-turn operations offers numerous innovations that are particularly user-friendly.
Milling and turning operations in a single set-up
With a mill-turn machine equipped with a TNC 640, it is possible to machine an entire workpiece in one set-up, combining milling and turning modes in the ideal order. To do this, the command switches very simply from one mode to another, depending on the program, and regardless of the configuration of the machine or the axes. The TNC 640 therefore eliminates the need for a second machine, it saves space, costs money and reduces the risk of inaccuracies caused by loosening and retightening of the workpiece.
The user creates his turning contours in Heidenhain Clear Text dialog. For this, it now has specific contour elements for turning. They can use the free contour programming (FK function) to define the turning contours of their choice or use the DXF converter to directly import profiles in DXF format. For more complex contour following turning cycles, the TNC 640 uses the same programming techniques as for milling. TNC programmers who are already familiar with milling therefore do not need to relearn everything and can use the knowledge they already have to quickly become familiar with turning on milling machines.
Many new features offered by the new version of the software
Version 5 currently available for the TNC 640 offers programming and simulation directly on the machine, as well as new configurations and numerous functions specific to machining: they make milling operations even simpler, safer and more precise. They allow the operator to program a turning just as easily as a milling without involving heavy changes.
The 3D simulation chart with many advantages
One of a kind, this one is very innovative and true to detail. It helps the operator to spot missing data or errors in the program even before starting machining. It represents the part from the point of view of its choice and simulates the milling and turning operations in a single view. During simulation, a large number of new functions provide precise visualization of details. Graphic simulation enables the operator to detect unwanted machining effects in good time. 3D simulation makes it possible to quickly and easily visualize the progress of machining programs created on the machine and to simulate programs generated from CAD / CAM systems.
Another new feature of the TNC 640 is the updating of the blank
Numerical control is based on the defined blank to calculate the intermediate state of the part at each machining step and allows machining cycles to be adapted accordingly. It thus avoids empty passes and optimizes approach strokes.
Optimal servo-control for perfect surfaces and impeccable contours
The ADP ( Advanced Dynamic Prediction ) function extends the possibilities of early calculation of the maximum allowable feed profile, thus optimizing the movement of the feed axes when milling with three or five axes. This function makes it possible to obtain clear surfaces in a reduced machining time, even on contours where the distribution of points varies greatly on adjacent tool paths. The numerical control calculates the contour in advance, dynamically, which enables it to adapt the speed of the axes in time. For this, it limits the speed of advance and guides the movements with a minimum of jerks at the level of the contour transitions.
The latest version of the software simplifies the programming of technological data on the TNC 640. Thanks to the contextual cutting data calculator, the operator can indeed calculate the spindle speed and the feed rate of the machining process concerned, then integrate the result of these calculations directly into the open feed and speed dialogue. To do this, the calculator itself identifies the open dialog box and then automatically requests only the information it needs.
Always attentive, Heidenhain has developed this new version 5 with a large number of solutions for the workshop desired by users. The TNC 640 thus opens up many possibilities for the machining of tomorrow.
Find out more: www.heidenhain.fr
