Correct option is B
The
cross slide of a lathe machine is primarily used for
taper turning when combined with other methods such as setting the compound rest at an angle or using a taper turning attachment. The cross slide provides movement perpendicular to the axis of the workpiece and plays a key role in achieving precise angular cuts.
Compound Rest Method: The compound rest is rotated to the desired angle, and the cross slide is used to feed the tool along the taper.
Cross-Slide Method with Taper Attachment: In this method, the cross slide is connected to a taper attachment, allowing the tool to move at a predefined angle.
Offset Tailstock Method: The tailstock is slightly offset, causing the workpiece to be rotated at an angle, producing a tapered cut.
Important Points
Lead screw
· The lead screw is used for thread cutting. It is made from good quality alloy steel and is provided with acme thread.
· It is driven from the head stock through the feed gearbox and moves the carriage in a longitudinal direction against the workpiece.
