Job Description:

• 1) Sets up and operates one or more single-spindle lathe-type screw machines equipped with automatic feeding and tool-indexing mechanisms to perform turning, boring, threading, and facing operations on metal bar stock on custom basis, analyzing specifications and deciding on tooling according to knowledge of screw machine operations: Studies blueprint to visualize machining to be done, dimensions of parts and permissible tolerances, and plans sequence of operations.

• 2) Selects cutting speeds, feed rates, depth of cuts, and cutting tools to be used on basis of knowledge of metal properties and shop mathematics.

• 3) Installs collets, bushings, and stock pushers in stock-feeding mechanism, using wrenches and screwdrivers, and loads with bar stock manually or with hoist.

• 4) Installs and adjusts cams, gears, and stops to control stock and tool movements.

• 5) Positions and secures tools in tool holders, verifying positions with gauges and other measuring instruments.

• 6) Moves controls to set cutting speeds and feed rates.

• 7) Starts machine, observes operations, and verifies conformance of first-run and sample workpieces to specifications, using such instruments as plug and ring gauges, calipers, and micrometers.

• 8) Replaces worn tools.

• 9) May operate bench grinder or cutter-grinding machine to sharpen tools.

• 10) May machine plastics or other nonmetallic materials.

• 11) May be required to have experience with particular material or product or machine of particular size, type, or trade name, and be designated accordingly.

• 12) May set up machines for other workers.