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Dynamic Precision: precise machining in less time

With Dynamic Precision, HEIDENHAIN exploits the accuracy potential of the machine tool. Dynamic Precision makes it possible to compensate for dynamic deviations of the machine tool, and ensures that workpieces with increased contour accuracy and even better surfaces are produced—while also increasing the machining velocity.

The package comprises the following options:

  • CTC: Cross Talk Compensation Compensation of acceleration-dependent position error
  • AVD: Active Vibration Damping Active acceleration damping
  • PAC, LAC and MAC: Adaptation of position, load and motion adaptive control parameters
Technical Information

Cross Talk Compensation (CTC):
Compensate for acceleration-related position errors

Dynamic acceleration processes introduce forces to the structure of a machine tool. These forces can briefly deform parts of the machine and thereby lead to deviations at the tool center point (TCP).

CTC compensates for position deviations that result from the compliance between two axes.

With it, the jerk can increase by a factor of 2, and machining times can be reduced by up to 15%.

MVC
Vibration dampening

Inclined or curved surfaces often come with surface finish problems in the form of visible shadows or waviness. Two frequent causes of this are elasticity in the drive train and structural vibrations.

The Machine Vibration Control (MVC) function suppresses these dominant low-frequency vibrations and enables fast, vibrationless milling. At the same time, high jerk values and thus higher accelerations are attainable. This reduces machining times without reducing the surface quality.
 

Position-, load- or motion-based adaption of controller parameters

The machining position, loading situation, and feed rate have a direct impact on machine behavior and thus the machining outcome. The optimal adaptation of controller parameters to the machining situation (position, load, feed rate) offers the following benefits:

  • Superior control quality
  • Higher accuracy
  • Improved dynamic behavior
  • Shorter machining times

For adapting the control to the machining situation, HEIDENHAIN offers three control options:

  • Position Adaptive Control (PAC) enables improved contour accuracy everywhere in the work envelope.
  • Load Adaptive Control (LAC) ensures high machining accuracy regardless of the load.
  • Motion Adaptive Control (MAC) provides greater control quality for motion-induced machine behavior and can significantly increase the acceleration capacity of master-slave axes.