Approach function APPR LT

Application

With the APPR LT NC function, the control approaches the contour on a straight line tangential to the first contour element.

Coordinates of the first contour point are programmed with Cartesian coordinates.

Description of function

This NC function encompasses the following steps:

  • A straight line from the starting point PS to the auxiliary point PH
  • A straight line from the auxiliary point PH to the first contour point PA

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 APPR LT X+20 Y+20 LEN15 RR F300

; Approach the contour on a tangential linear path

To navigate to this function:

Insert NC function All functions Path contour Approach functions (APPR) APPR LT

The NC function includes the following syntax elements:

Syntax element

Meaning

APPR LT

Syntax initiator for a linear approach function tangential to the contour

X, Y, Z, A, B, C, U, V, W

Coordinates of the first contour point

Number or numerical parameter

Entry: absolute or incremental

Optional syntax element

LEN

Distance of the auxiliary point PH to the contour

Number or numerical parameter

Optional syntax element

R0, RL, RR

Tool radius compensation

Tool radius compensation

Optional syntax element

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

Note

Example APPR LT

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 X+40 Y+10 R0 F300 M3

; Approach PS with R0

12 APPR LT X+20 Y+20 Z-10 LEN15 RR F100

; Approach PA with RR, distance PH to PA: LEN15

13 L X+35 Y+35

; Complete the first contour element