Function Handwheel superimp.

Application

With the Handwheel superimp. function, you can traverse the axes with the superimposed handwheel during program run. You select the coordinate system in which the Handwheel superimp. function is effective.

Description of function

In the Max. val. column, you define the maximum traversing distance for the respective axis. The traverse can be either in the positive or in the negative direction. The maximum path is therefore twice as large as the input value.

In the Actl.val. column, the control displays the path traversed using the handwheel for each axis.

The Actl.val. column can also be edited manually. If you enter a value greater than the Max. val., you cannot activate the value. The control marks an incorrect value in red. The control displays a warning message and prevents the form from being closed.

If the Actl.val. column contains a value when you activate the function, the control will use the menu for returning to move to the new position.

Returning to the contour

The Handwheel superimp. function affects the position display in the Positions workspace. The control shows the values offset by the handwheel in the position display.

Positions workspace

The control displays the values of the two methods for Handwheel superimp. on the POS HR tab of the additional status display.

On the POS HR tab of the Status workspace, the control shows whether the Max. val. is defined using the M118 function or the Global Program Settings (GPS).

POS HR tab

Virtual tool axis VT

The virtual tool axis VT is needed for machining operations with inclined tools (e.g., for manufacturing oblique holes without using a tilted working plane).

Handwheel superimp. can also be executed in the active tool axis direction. The VT always corresponds to the direction of the active tool axis. On machines with head rotation axes, this direction may not correspond to the basic coordinate system B-CS. You activate the function with the VT line.

Notes concerning different machine kinematics

By default, values traversed with the handwheel in the VT remain active even after a tool change. If you activate the Reset VT value toggle switch, the control resets the actual value of the VT when a tool is changed.

The control displays the values of the virtual tool axis VT on the POS HR tab of the Status workspace.

POS HR tab

For the control to display values, you must define a value greater than 0 in the VT function for Handwheel superimp.

Notes

 
Notice
Danger of collision!
The coordinate system chosen in the selection menu also takes effect on Handwheel superimp. with M118, even if the Global Program Settings function (GPS) is not active. There is a risk of collision during the execution of Handwheel superimp. and the subsequent machining operations!
  1. Before exiting the form, always make sure to select the Machine (M-CS) coordinate system
  2. Test the behavior at the machine
 
Notice
Danger of collision!
When both methods for Handwheel superimp. with M118 and with the Global Program Settings GPS are active at the same time, the definitions influence each other, depending on their sequence of activation. There is a risk of collision during the execution of Handwheel superimp. and the subsequent machining operations!
  1. Use only one method for Handwheel superimp.
  2. Preferably use the Handwheel superimp. option of the Global Program Settings function
  3. Test the behavior at the machine

HEIDENHAIN does not recommend using both methods for Handwheel superimp. at the same time. If M118 cannot be removed from the NC program, you should at least activate Handwheel superimp. from GPS prior to selecting the program. This ensures that the control uses the GPS function rather than M118.

  • If neither the NC program nor the Global Program Settings were used to activate coordinate system transformations, Handwheel superimp. is effective in the same manner in all coordinate systems.
  • If you want to use Handwheel superimp. while machining with active Dynamic Collision Monitoring (DCM), then the control must be in a stopped or interrupted state. Alternatively, you can also deactivate DCM.
  • Dynamic Collision Monitoring (DCM, option 40)

  • Handwheel superimp. in virtual axis direction VT requires neither a PLANE function nor the FUNCTION TCPM function.
  • Use the machine parameter axisDisplay (no. 100810) to define whether the control also shows the virtual axis VT in the position display of the Positions workspace.
  • Positions workspace