For OP 10 turning on forged, cast or irregular parts,
workholding is a difficult problem. Draft angles, parting lines, roughness, and
out-of-roundness are inherent in the raw stage of these parts. A pullback style
compensating chuck can grab the part and pull it back securely toward the chuck
face. The chuck jaws can compensate for surface irregularities.
Once the OP 10 is done, in a high production line, a more
accurate chuck is needed for OP 20 and onward. A pullback chuck can be useful…
Source URL: Chucks of Choice: pullback-style chucks for OP 10 to OP 30 turning
Source Website: Advance Engineering – Engineering.com