Screw thread cutting machine - has tool support which can be adjusted for height to suit size of workpiece

摘要

The machine for cutting screw threads has a thread cutting tool (11) mounted in the housing of the driving mechanism (12). The driving mechanism (12) is mounted on a vertical tubular support (3) which fits telescopically inside a tubular base (4). The support (3) has a flat lower surface which rests on one face of a polygonal cam (5). This cam (5) can be rotated by a handle (6) in order to adjust the height of the upper part to suit different dia. of workpieces. The handle rotates a pointer which indicates the workpiece dia. on a scale (7). USE - For cutting external screw threads on pipes.