Example 2: Mill

Mount the fourth axis as described above. Mount a part 3” in diameter and 5” long on the face of the rotary table. The part has a 0.25” radius turned on the end. Shortest Distance is set to off.

Assume that a series of six 0.25” wide grooves must be milled 60° apart, 0.25” deep at the start, tapering up to 0.125” deep and rotating 15° at the far end. The groove must follow the end contour of the part (radius). Set X0 at the right end, Y0 at the cylinder center line, U0 at a pre-milled keyway on the cylinder. Set the tool offset so that the center line of the 0.25” ball-end mill is at the center line of the 3” diameter part (with Y axis at 0).

*4-AX-MILL

*SET Shortest Distance TO "off" G90 G70 G0 M5

G28 Z0

G53 O1

G0 X0 Y0 U0

T1 *.25 BALL-END-MILL

S2400

M3

M98 P1 L6

G90 G0 M5

G28 Z0

G0 X0 Y0 U0

M2

O1 * GROOVE

G90 G0 X.225

G0 Z2.625

G1 X.125 F5

G18 G91 G2 X-.25 Z.25 I-.25 K0 U-2.

G17 G1 X-3.25 Z.125 U-13

G90 G0 Z3.225

G0 X.225

G91 G0 U-45

M99

11.5 Four Axis Programming

ACU-RITE 3500i

433

Page 459
Image 459
Acu-Rite CNC 3500i user manual O1 * Groove, 433