Who knows the programming of FANUC for CNC cylindrical grinder?

In the compound fixed cycle, after defining the outline of the part, the whole process from rough machining to finish machining can be completed, which further simplifies the program.

Figure 3.34 Cylindrical Roughing Cycle

The excircle rough cutting cycle is a compound fixed cycle. It is suitable for rough machining of external cylindrical surface requiring multiple passes, as shown in Figure 3.34.

Programming format:

G7 1 U(△d) R(e)

g 7 1 P(ns)Q(nf)U(△U)W(△W)F(F)S(S)T(T)

Among them:

△d- the amount of back knife eaten;

Withdrawal of electronic tools;

Ns -- the section number of the initial section of the finished profile section;

Nf-the segment number of the end segment in the finished contour segment;

△ u-x axial finishing allowance;

△ W-Z axial finishing allowance;

F, s, t-f, s, t code.

note:

The f, s and t functions in 1, ns→nf are invalid for rough turning cycle even if specified.

2. The outline of the part must conform to the X-axis and Z-axis directions and increase or decrease monotonously at the same time; When the X-axis and Z-axis directions are non-monotonic, the first instruction in the ns→nf program segment must move in both directions.

Example: Write a circular machining program for rough cutting of excircle according to the size.

n 10 G50 X200 z 140t 0 10 1

n20 G00 G42 x 120 z 10 M08

N30 G96 S 120

N40 G7 1 U2 R0.5

n50 g 7 1 P60 q 120 U2 W2 f 0.25

N60 G00 X40 //ns

N70 G0 1 Z-30 F0. 15

N80 X60 Z-60

N90 Z-80

N 100 X 100 Z-90

n 1 10 Z- 1 10

n 120 x 120 Z- 130//nf

N 130 G00 X 125

N 140 X200 Z 140

N 150 M02