Tool radius compensation type

(1) Tool radius compensation left. Perpendicular to the machining plane from the positive direction of the axis in the negative direction in the past, along the direction of movement of the tool (assuming the workpiece does not move) to see the tool in the workpiece as the tool radius compensation left of the left compensation. Expressed with the G41 command.
(2) Tool radius compensation  abrasive grinding . Perpendicular to the machining plane from the positive direction of the axis in the negative direction at the past, along the direction of movement of the tool (assuming the workpiece does not move) to see the tool in the workpiece as the tool radius compensation right of the right compensation.  Polycrystalline diamond  with the G42 command.
During the execution of the tool radius compensation
(A) Establishment of tool radius compensation. Tool compensation from the establishment of the tool center trajectory coincides with the transition to programming and programming track off a corner radius. Cutter compensation program segment must have GOO or G01 function is effective, the offset compensation must be performed in a block to complete the process and can not be omitted.
(2) the execution of the tool radius compensation. Executed with G41, G42 command block, the tool center away from the programmed path always an offset. G41, G42 instruction can not be repeated for a predetermined use, that in the previous command using G41 or G42, you can not directly use the G42 or G41 command. To use, you must first uninstall the original compensation with G40 command state, then use G42 or G41, or compensation is not normal.
(3) Cancellation of tool radius compensation. In G41, G42 process behind G40 block that is added to the tool radius compensation is canceled. Shown to cancel tool radius compensation process. Tool radius compensation cancel G40 block is executed before the tip arc center stays previous block on the end of the vertical position, G40 block to exit the tool by the end of the action. CNC lathe tool nose radius compensation used for processing, if the tool tip shape and location of different cutting tool compensation amount in compensation direction is also different. Therefore imaginary tool orientation must be set in advance together with the offset value. Turning the imaginary tool nose direction is from the tip of nose R center to see the direction of the theory from the direction of the tool cutting decisions. System with T said the direction of the imaginary tool nose number, the imaginary tool nose direction of the relationship between T code.