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

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 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

Fixed or variable number

Entry: absolute or incremental

Optional syntax element

LEN

Distance of the auxiliary point PH to the contour

Fixed or variable number

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

Fixed or variable number

Optional syntax element

M

M function

Miscellaneous Functions

Fixed or variable number

Optional syntax element

Note

Example APPR LT

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