Accession Number : ADA329597

Title :   Design and Construction of a Refined Step Threading Machine for 175MM and 8 Inch Breech Rings,

Corporate Author : ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEA PON SYSTEMS LAB

Personal Author(s) : Rose, C. H.

PDF Url : ADA329597

Report Date : JUN 1980

Pagination or Media Count : 29

Abstract : This report details the engineering design and production application of a special purpose machine, tooled to produce internal step threads (constant lead thread on two distinct diameters) on 8 in M201 breech rings. The machine, using oscillating motion and a full thread form tool, produces the full thread on each sector, then is indexed in turn to the next sectors until all eight (8) are complete. The use of this equipment has reduced the floor to floor time from 13 hours to 4 hours while producing better thread finishes and more accurate dimensional sizes.

Descriptors :   *MACHINES, *BREECH MECHANISMS, PRODUCTION, SIZES(DIMENSIONS), TIME, RINGS, OSCILLATION.

Subject Categories : Mfg & Industrial Eng & Control of Product Sys
      Machinery and Tools
      Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE