Accession Number:

AD0669311

Title:

EQUIPMENT FOR SPARK-ASSISTED MACHINING (OBORUDOVANIE DLYA ELEKTROISKROVOI OBRABOTKI),

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1967-10-04

Pagination or Media Count:

11.0

Abstract:

Spark-assisted machining is now being used in industry with striking effectiveness. This success is explained by the fact that the electric-spark method makes it possible to shape complicated molds, dies, spinnerets and other parts from any type of current-conducting material, irrespective of its physicomechanical properties. The saving that results is considerable. Thus, 37 thousand rubles were saved in the tool-making shop of the First Moscow Clock Factory in making 440 hard-alloy dies. Spark-assisted machining is widely used not only in instrument- and machine building, but also in light industry. It is used in the production of decorative products Persian lamb, Tsigeian sheep, beaver, etc. from synthetic fibers. This machine is used to make fine-structured screens, filters and various components of instruments and tools by positive and negative duplication. Precision tolerances on the parts range to 0.002 mm, and the machined-surface finish is of class 7-10. The minimum size of the bridges and slots is 0.02 mm. Machining regimes voltage 0.150 v short-circuit current less than 1 amp capacitance of condensers 0.005-0.025 microfurans. Kerosene or distilled water is used as the dielectric liquid. The over-all dimensions of the machine are 880 x 720 x 1300 mm. Author

Subject Categories:

  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE