Grooving on the Lathe - 7: Widen the Groove
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.
To widen the groove, it is best not to use the entire width of the tool bit. It means that there will be extra cuts required but this method will provide accuracy without fail. Using the indicator on the ways, or a digital read-out. Move the carriage over at least half the width of the tool. Begin the next plunge cut operation. It is desirable to be able to use automatic feed, but a there are many factors that could go wrong. Here is where experience says to use hand control to be sure. Making sure that there is ample coolant on the cutting edge at all times will assist greatly in the removal of chips and tool maintenance. Continue plunge cut operations until the approximate width of the groove is obtained, leaving about .030 on all dimensions.
During most finish operations, it is routine to check tooling for sharpness. It may be important to recheck indicators and stop for accuracy. Also of importance is to double-check the actual dimensions of the groove before beginning the finish operations.
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label: lathe gorove, grooving, cutting tool, setup, feeds and speeds, cuttting, widening, measuring, parrting cuttting off