Klartext Portal – The Information Site for HEIDENHAIN Controls

Dynamic Precision – exact machining in the least amount of 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
  • Position / Load / Motion Adaptive Control (PAC/LAC/MAC)
    Position-/load-/motion-related adaptation of control parameters
  • Dynamic Precision

Dynamic_Precision_de

Cross Talk Compensation (CTC)
Compensates 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%.

Control
TNC 640
iTNC 530
TNC 620
TNC 320
CTC
x
-
-
-

Hovercraft_de

Active Vibration Damping (AVD)

AVD actively dampens vibrations. It suppresses dominant low-frequency vibration (machine setup vibrations or elasticity in the power train). To attain comparable surfaces without AVD it would be necessary to reduce the jerk values by up to a factor of 3.

Control
TNC 640
iTNC 530
TNC 620
TNC 320
AVD
x
-
-
-

LAC – Load Adaptive Control

LAC regulates the feed rate depending on the machine load. For linear axes LAC determines the current mass, and for rotary axes it determines the inertia. LAC continuously adapts parameters of the adaptive velocity feedforward control to the current mass or inertia of the workpiece. The machine operator no longer needs to determine the load situation on his own, which rules out operator error.

Position / Motion Adaptive Control (PAC/MAC)

PAC regulates the feed rate depending on the position. PAC changes machine parameters depending on the axis positions. This achieves improved contour accuracy within the entire range of traverse of the feed axes.

MAC regulates the feed rate depending on the machine motions. MAC changes parameters depending on the speed or acceleration of a drive. This enables a greater maximum acceleration during rapid traverse movements.

Control
TNC 640
iTNC 530
TNC 620
TNC 320
PAC/LAC/MAC
x
-
-
-

Dynamic_Precision_de