Relieving Lathe

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Relieving Lathe

 

a metal-cutting machine tool of the lathe group for machining the back surfaces of the teeth of multiblade cutting tools (for example, form cutters and tap borers) to impart to them a curved (“relieved”) shape. The tool is a form tool whose shape is a mirror image of the shape of the piece to be worked; it is mounted on a slide rest, and the workpiece is mounted on pointed journals (directly or on a mandrel). The workpiece is rotated by the lathe spindle. The slide rest and form tool are moved transversely by a rotating cam, which also returns the slide rest to its initial position when the form tool reaches the tooth space of the tool being machined.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.