3/8/2024 0 Comments Cnc fanuc lathe facing programNo one wants their part getting thrown out of the chuck because the RPM was too high. It controls runaway CSS speeds, and to ensure the capacity of the workholding device. CNC G71 rough turning cycle is the cnc turning cycle which is commonly used for removal of the extra material from the component in horizontal direction, just write one or two blocks of cnc code and all is done. G50 defines the maximum RPM the operation will use. This article explains the G71 rough turning cycle one-line format. The can spin and hold as fast as the machine’s maximum speed.ĭepending on the CNC machine tool, G50 may clamp the RPM because of the age or condition of the motor. The rating for holding is stamped onto workholding devices.Ĭollets are better than 3-jaw chucks. The chuck may only be rated to hold a workpiece up to 4500 RPM. The CNC lathe motor may top out at 12,000 RPM. There are two reasons why we would want to control CSS.ġ.) The G96 CSS command will, theoretically, rev the motor to spin to infinity and beyond.Ģ.) The practical problem with that is that the chuck or other workholding device may not have the holding power of the lathe motor. The G50 is a Speed Clamp for Constant Surface Speed (CSS). This definition is closer to the meaning for G50 Speed Clamp. This phrase means that the clamp is becoming tighter so greater control can occur. Notice the term, to clamp down on something. Parts can be clamped to the machine tool table. A mechanical definition relates to a fastener, which is a rigid devise, that holds things together.įor example: Clamps are used in the shop to secure workpieces to work benches.
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