R Phase Offset Explained

Classic Control - Lathe Operator's Manual

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When dual lathe spindles are synchronized, they orient, then rotate at the same speed with their home positions stationary relative to each other. In other words, the relative orientation you see when both spindles are stopped at their home positions is preserved as synchronized spindles rotate.

You can use an R value with G199, M19, or M119 to alter this relative orientation. The R value specifies an offset, in degrees, from the following spindle’s home position. You can use this value to allow the chuck jaws to mesh during a workpiece hand-off operation. Refer to Figure Figure 1 for an example.

G199 R Value Example: [1] Leading Spindle, [2] Following Spindle

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.