GSK GSK988TA, Manual

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GSK988TA/GSK988TA1/GSK988TB Turning Center CNC System User Manual 【 Programming & Operation 】
84
Ⅰ
Programming
Fig.2-46
Program: O0005;
G00 X176 Z10 M3 S500 T0202; (Change No.2 tool and execute its compensation,
spindle rotation with 500 rev/min)
G72 W2.0 R0.5 F300; (Tool infeed 2mm, tool retraction 0.5mm)
G72 P10 Q20 U0.2 W0.1; (Roughing a--d
， X roughing allowance 0.2mm and Z
0.1mm)
N10 G00 Z-55 S800; (Rapid traverse)
G01 X160 F120; (Infeed to a point)
X80 W20; (Machining a—b) Blocks for finishing path
W15; (Machining b
→ c)
N20 X40 W20; (Machining c → d)
G70 P10 Q20; (Finishing a → d)
M30 ；
2.19.3 Closed Cutting Cycle G73
Command functions: G73 is divided into three parts:
⑴
Blocks for defining the travels of tool infeed and tool retraction, the
cutting speed, the spindle speed and the tool function when roughing;
Blocks for defining the block interval, finishing allowance; ⑵
Blocks for some continuous finishing path, counting the roughing
⑶
path without being executed actually when executing G73.
According to the finishing allowance, the travel of tool retraction and the cutting times, the system
automatically counts the travel of roughing offset
，
the travel of each tool infeed and the path of
roughing, the path of each cutting is the offset travel of finishing path, the cutting path approaches
gradually the finishing one, and last cutting path is the finishing one according to the finishing
allowance. The start point and end point of G73 are the same one, and G73 is applied to roughing for
the formed rod. G73 is non-modal and its path is as Fig.2-47.