...O. Diewwanit; P. Keawcha-um; T. Keawcha-um; W. Petchhan; S. Thipprakmas To form the required shapes from advanced high strength steels sheets, such as dual-phase (DP) steel, shearing processes are commonly used. In general, although good cut-edge characteristics can be often achieved by setting...

.... , 2006 , “ Cutting Mechanisms in Micro-End-Milling and Their Influence on Surface Generation ,” Ph. D. thesis, University of Illinois at Urbana Champaign (UIUC), IL. [19] Manjunathaiah , J. , and Endres , W. J. , 2000 , “ A Study of Apparent Negative Rake Angle and Its Effects on Shear Angle...

...Hua-Chu Shih; Ming F. Shi A beveled shear hole piercing process has recently been developed for advanced high strength steel (AHSS). The preliminary results have shown the new process is able to improve the quality of the sheared edge and the edge stretchability of AHSS. The goal of the current...

... of the plastic power, which is spent for shearing the material within a finite shear zone, and the friction power, which is spent for overcoming the friction at the rake face. In calculating the shearing power, rate-sensitive plastic behavior of fcc metals is considered. In addition, realistic effects of lattice...

... that the chip formation process has a discrete nature, associated with the periodic shearing process during machining. The chip formed during machining of titanium alloy Ti6Al4V is found to be mainly with primary serrated teeth appearing in the main body of the chip. Secondary serrated teeth resulting from...

... for which the cutting mechanisms vary from ploughing-dominated to shearing-dominated. The minimum chip thickness effect is found to cause feed rate dependent instability at low feed rates, and the range of unstable feed rates depends on the axial depth of cut. The effects of process faults on microend mill...

...C. Y. Huang; J. J. Junz Wang This paper extends analytical modeling of the milling process to include process damping effects. Two cutting mechanisms (shearing and plowing mechanisms) and two process damping effects (directional and magnitude effects) are included. The directional effect is related...

... on strain, strain rate, and temperature. In thermal modeling, oblique moving band heat source theory is utilized and analytically combined with modified Oxley’s parallel shear zone theory. Normal stress distribution on the tool rake face is modeled as nonuniform with a power-law relationship. Hence...

...Jin Ma; Hongbing Lu; Ming Li; Bo Wang Continuous shear slitting of aluminum sheets (or webs) was investigated using a laboratory slitter. This study focused on experimental investigation of the effect of three major slitting parameters (clearance, overlap, and cant angle) on the burr height...

...Aniruddha Khadke; Somnath Ghosh; Ming Li This work combines experimental studies with finite element simulations to develop a reliable numerical model for the simulation of shearing process in aluminum alloys. The critical concern with respect to product quality in this important process is burr...

... are used to infer the relative wear indices, such as flank wear angle, wear depth of punch top face, straightness error, area loss, and volume loss of punch flanks. By using these indices more objective estimations can be acquired than that of wear length and wear area. A series of shearing experiments...