Which handwheel does a lathe operator use to reach the finish depth during boring?

Which handwheel does a lathe operator use to reach the finish depth during boring?

• A. Carriage handwheel
• B. Crossfeed handwheel
• C. Tailstock handwheel
• D. Toolpost handwheel

Answer: (A)

In boring, finishing depth is controlled by feeding the cutting tool along the length of the work, which is done with the carriage handwheel. Turning this handwheel moves the entire carriage (and the attached tool) along the bed, allowing the tool to advance into the work to the final axial depth in a controlled manner. The crossfeed handwheel moves the tool radially to adjust the bore’s diameter, not how deep the cut goes along the axis. The tailstock handwheel operates the tailstock quill to position or feed a tool mounted in the tailstock, mainly for entry or setup, not for finishing depth along the bore. The toolpost handwheel adjusts the tool’s position at the toolpost during setup, not the actual depth of a boring cut. So the carriage handwheel is the right control for reaching the finish depth in boring.

In boring, finishing depth is controlled by feeding the cutting tool along the length of the work, which is done with the carriage handwheel. Turning this handwheel moves the entire carriage (and the attached tool) along the bed, allowing the tool to advance into the work to the final axial depth in a controlled manner. The crossfeed handwheel moves the tool radially to adjust the bore’s diameter, not how deep the cut goes along the axis. The tailstock handwheel operates the tailstock quill to position or feed a tool mounted in the tailstock, mainly for entry or setup, not for finishing depth along the bore. The toolpost handwheel adjusts the tool’s position at the toolpost during setup, not the actual depth of a boring cut. So the carriage handwheel is the right control for reaching the finish depth in boring.