Headline: 1) external diameter thick car circulates (G71) 2) vehicle of external diameter fine circulates (G70) statement form: G71U (△ D) R (E) . E, every time the quantity retreating a knife that cutting circulates, radius value. Come by start speed circular start A, with compensation of a cutting tool. Round thick car circulates outside, thick car cuts deep 2mm, retreat a knife to measure 1mm. 1) external diameter thick car circulates (G71) 2) vehicle of external diameter fine circulates (G70) statement form: G71U (△ D) R (E) ; G71P (Ns) Q (Nf) U (△ U) W (△ W) F (F) S (S) T (T) ; G70P (Ns) Q (Nf) ; N (Ns) ... ; In ordinal date N (Ns) with N (Nf) the treatment route that assigns between block. ... N (Nf) ... ; Among them △ D, every time the quantity of penetration of a cutting tool of radius direction, radius value; E, every time the quantity retreating a knife that cutting circulates, radius value. Ns, the serial number of the first block that assigns a route; Nf, the serial number of the last block that assigns a route; △ U, the fine vehicle surplus of X axis direction; △ W, the fine vehicle surplus of Z axis direction; Use give an example: Foregone thick car is cut deeply 2mm, the quantity that retreat a knife is 1mm, fine vehicle surplus is in X axis direction 0. 6mm (the diameter is worth) , z axis direction is 0.
3mmN010G92X250.
0Z160.
0; Installing workpiece coordinate is; N020T0100; Change a knife, mix without length wear away compensation; N030G96S55M04; Main shaft inverts, constant linear velocity (55m/min) control; N040G00X45.
0Z5.
0T0101; Come by start speed circular start A, with compensation of a cutting tool; N050G71U2R1; Round thick car circulates outside, thick car cuts deep 2mm, retreat a knife to measure 1mm; N060G71P070Q110U0.
6W0.
3F0.
2; Fine car line is N070 ～ N110. N070G00X22.
0F0.
1S58; ′ of A of → of set speed A, fine vehicle feed 0.
1mm/r, constant linear velocity is controlled; N080G01W-17; Car φ 22 outside round N090G02X38.
0W-8.
0R8; N100G01W-10 of car R8 circular arc.
0; Car φ 38 outside round N110X44.
0W-10.
0; Car cone; N120G70P070Q110; A is returned to nod after fine vehicle begins to end circularly; N130G28U30.
0W30.
0; Nod among classics (75, 35) return reference point; N140M30; The program ends. CNC Milling