RESISTANCE STUDIES FOR HARD-ALLOY TOOL OF DIVIDING DIES FOR MAKING OF INTRICATE-CONTOUR THIN-SHEET PARTS WITH VIEW TO INCREASE OF ITS RELIABILITY

Abstract

There the study object is the resistance of hard-alloy punches and of hard-alloy dies with the intricate contour of division. The study purpose is to increase the reliability of hard-alloy punches and of hard-alloy dies of dividing press tools in the mass production of thin-sheet intricate-contour articles. The physical model of fatigue flaking of tool edges, the regression models of resistance to the fatigue fracture of intricate-contour punches, of wear of edges of intricate-contour tools have been developed; the dependence of burr height in the intricate-contour part to be stamped by the hard-alloy tool on the wear of its cutting edges has been ascertained. The recommendations for the choice of optimum constructions of hard-alloy die tools, for the choice of optimum stamping conditions have been formed; the new construction of press tools have been developed. The mass production of stamped blanks of lead frames of integral microcircuits has been launched at the Puanson works (Znamenka, Kirovograd Region). The introduction efficiency is the reliability increase of hard-alloy tools of dies for the making of stamped blanks of lead frames of integral microcircuits. The application field is the mass production of thin-sheet parts with the intricate contourAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio