CNC control system user:

Hello, we are using G71 rough machining to make a 24.3 diameter ball shape part on our lathe with GSK980TDb cnc control system,  when the cutting move to the second halfsphere, the tool always reach the final dimension immediately, which makes the tool broken, the material is hexagonal bar with 25 diameter, and the CNC program please see below:

G71 U1.7 R0.3 G71 P1 Q2 U0.9 W0.4 F0.2 N1 G0 X-0.15 G1Z0.0 X0.0 G3X24.3 W-12.15 R12.15 G2 X20.4 W-6.81 R12.15 G1X24.0 W-4.0 X28.5 N2 G0U0.5 G70 P1 Q2 F0.12

The problem comes when executing G2 command, the tool trail is not right, it cuts to the final size by one cut, but the same program will cut two times when executing the G2 command, is it the problem of GSK980TDb, does it need to be upgraded?  What will be the cost for the upgrading? The CNC controller produce time is Year 2011, Or just change some parameters? Looking forward to hearing from your side soon, thank you so much.

CNCmakers Support:

Dear sir, Please add W0 after X-0.15 and try again.

G71 U1.7 R0.3 G71 P1 Q2 U0.9 W0.4 F0.2 N1 G0 X-0.15 W0 G1Z0.0 X0.0 G3X24.3 W-12.15 R12.15 G2 X20.4 W-6.81 R12.15 G1X24.0 W-4.0 X28.5 N2 G0U0.5 G70 P1 Q2 F0.12