Bar Turning Fundamentals
Bar turning shapes rotating cylindrical workpieces using stationary cutting tools on lathes or turning centers. It produces shafts, pins, bushings, and rotational parts with high precision. Understanding speed, feed, and depth of cut is essential for accuracy.
Tool Selection
Insert geometry depends on material and operation. Roughing needs robust inserts with large nose radii. Finishing uses sharp inserts with smaller radii for tight tolerances. Set tools precisely on center height to prevent poor surface finish.
Cutting Parameters
For mild steel, use 150 to 300 meters per minute with carbide tooling. Feed rate affects roughness directly with finer feeds giving smoother results. Balance depth of cut between productivity and tool life.
Chip Control
Use chip breaker grooves for specific feed and depth of cut. Flood coolant suits most steel and aluminum operations while high-pressure systems improve evacuation in deep boring.
