External Thread Cutting Tools Lathe

The bottom surface of the tool shank.

External thread cutting tools lathe.

4 1 external thread cutting tool metric b s w or american v thread are formed by a single point thread cutting tool. With internal thread cutting the piece is held in a chuck. The same nomenclature applies to all cutting tools. The tool moves across the piece linearly taking chips off the workpiece with each pass.

Threading lathe tools cut threads in plastic and most metal with these high speed steel tools. In external thread cutting the piece can either be held in a chuck or mounted between two centers. Its cutting edges sharpened to the shape and size of the thread to be cut. The leading edge of the tool bit that does the cutting.

Cutting tools used on a lathe are generally single pointed cutting tools and although the shape of the tool is changed for various applications. Usually 5 to 7 light cuts create the correct depth of the thread. Screw thread cutting screw threads are cut with the lathe for accuracy and for versatility. The shape of the tool is determined by the included angle at the nose of the tool which should correspond to the angle of the thread.