the leadscrew is used for thread cutting on a lathe
A lead screw is used to transfer circular motion into linear motion as the lead screw engages with a nut
An acme thread is the most commonly used.
Sometimes the propeller on a boat is called a screw & they used to be made of lead. So they would be found at the end of the propeller shaft.
presuming you mean the lead screw on a lathe, used when cutting threads on the workpiece, then the screw itself is obviously fixed, but the rotation of it may be able to be changed, depending on the lathe manufacturer.
screw
The feed rod transmits power from the headstock to the carriage for feeding operations.The lead screw transmits power from the headstock to the carriage for screw thread cutting operations. On some lesser types of lathes the feed rod and the lead screw are used for both the feed and the screw cutting power transmission.
when lead of the screw is equal to the pitch it is called single threaded screw
Kiomi
Lead screws (always pronounced "LEED," as in the present tense of the verb "to lead") are used in mechanical transmission systems to convert rotary motion to controlled linear motion. A common example is in the machinist's screw-cutting lathe. Here a motor turns the lathe's headstock to rotate the piece being machined. A train of gears connected to the headstock turns the lead screw which is usually as long as the entire lathe. As the lead screw turns it propels the cutting tool along the workpiece at a rate directly linked to the rotation of the headstock.
§ Screw threads have better compression strength than other threads. § Due to low thread angle there is no radial pressure on nut. § Due to smaller angle, the lead of screw is less.
§ Screw threads have better compression strength than other threads. § Due to low thread angle there is no radial pressure on nut. § Due to smaller angle, the lead of screw is less.
is a screw designed to translate turning motion into linear motion.