Accession Number : AD0649041

Title :   DETERMINATION OF STRESSES IN THE PROCESS OF FORCED PRECISION PRESSING OF PARTS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Stenko,B. P.

Report Date : 19 JAN 1967

Pagination or Media Count : 16

Abstract : Considerations in determining stresses occurring in the process of forced rotational pressing of precision parts are developed. Emphasis is placed on determining the effect on the process of such parameters as V - the rate of rotation, S - the feed rate, f - the press coefficient, and others. The resultant stress P is the product P = q.f, where q is the mean unit tool pressure, and F is the contact area between the tool and the part. This product may be written in a form suited to defining stress components as related to area projections on coordinate planes. A method of determining the projected areas of contact surfaces for press rollers with conical radial profiles is developed. Circumferential deformations are ignored as radial and longitudinal distortions are emphasized. Geometrical equalities for an example case are given. Special testing equipment was designed and constructed for studying the process. The equipment consisted of a dynamometer with a press roller, a press mandrel, and instrumentation. Each major component of the test equipment is described. The system was tested and checked out with the preparation of a roller of U8A steel. Some details of temperature-measuring instrumentation are given. (Author)

Descriptors :   (*ROLLING(METALLURGY), *STRESSES), USSR, MECHANICAL WORKING, METALS

Subject Categories : Fabrication Metallurgy
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE