Departure function DEP CT

Application

With the NC function DEP CT, the control departs from the contour on a circular path tangential to the last contour element.

Description of function

The tool moves on a circular path from the last contour point PE to the end point PN.

The circular path is defined by the center angle CCA and the radius R.

The direction of rotation of the circular path depends on the active radius compensation and the algebraic sign of the radius R.

The table shows the relationship between tool radius compensation and the algebraic sign of the radius R and the direction or rotation:

Radius compensation

Algebraic sign of radius

Direction of rotation

RL

Positive

Counterclockwise

RL

Negative

Clockwise

RR

Positive

Clockwise

RR

Negative

Counterclockwise

 
Tip

If you change the algebraic sign of the radius R, then the position of the auxiliary point PH changes.

The following applies regarding the center angle CCA:

  • Only positive input values
  • Maximum input value 360°

Input

NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.

Change the following contents as needed:

  • Tools
  • Cutting parameters
  • Feed rates
  • Clearance height or safe position
  • Machine-specific positions (e.g., with M91)
  • Paths of program calls

Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.

In addition, test the NC programs using the simulation before the actual program run.

 
Tip

With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.

11 DEP CT CCA30 R+8

; Depart from the contour on a tangential circular path

To navigate to this function:

Insert NC function All functions Path contour Departure functions (DEP) DEP CT

The NC function includes the following syntax elements:

Syntax element

Meaning

DEP CT

Syntax initiator for a circular departure function tangential to the contour

CCA

Center angle

Number or numerical parameter

R

Radius

Number or numerical parameter

F, FMAX, FZ, FU, FAUTO

Feed rate

Feed rate F

Number or numerical parameter

Optional syntax element

M

M function

Miscellaneous Functions

Number or numerical parameter

Optional syntax element

Example DEP CT

NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.

Change the following contents as needed:

  • Tools
  • Cutting parameters
  • Feed rates
  • Clearance height or safe position
  • Machine-specific positions (e.g., with M91)
  • Paths of program calls

Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.

In addition, test the NC programs using the simulation before the actual program run.

 
Tip

With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.

11 L Y+20 RR F100

; Approach the last contour element PE with RR

12 DEP CT CCA180 R+8 F100

; Approach PN with CCA180; distance PE to PN: R+8