Papers by Keyword: Specific Cutting Force

Abstract: This paper presents the results of the experiments which aimed to determine the value of the specific cutting force (SCF) during longitudinal turning of sintered alloy Inconel PWA. The analysis of the influence of cutting speed on the value of SCF was carried out. Taguchi L9 (2)3 orthogonal array has been applied for experimental design. S/N ratio and ANOVA analyses were performed to identify significant parameters influencing specific cutting force. The analysis presents the method that reduces the cutting power during turning of sintered nickel alloy.

Abstract: Iron-based alloy GH2132 is a kind of difficult-to-machine material. In this study, the experiments were processed to research the effect of feed per tooth, axial cutting depth and radial cutting depth on milling force. Variance analysis was made on the three factors. The results reveal that axial cutting depth affects milling force significantly, followed by feed per tooth and radial cutting depth has little influence on it. Two types of empirical model of milling force were established by the result of orthogonal experiment and multiple linear regression analysis. It was verified that both (h_m, a_p) model and (h_m, a_p, a_e) model had good prediction accuracy compared with the experimental data. By calculating specific cutting force using the (h_m, a_p) model, a modified coefficient of the specific cutting force for 1mm² chip cross section was proposed. The study would provide guidance to improve the machining precision and machining efficiency of high temperature alloy materials.

Abstract: Microchannel chips for use in micro total analysis systems have recently been attracting attention in the medical field. The photolithography technology employed in semiconductor manufacturing is generally used to manufacture microchannel chip dies. However, this technology involves several processes such as mask fabrication and application of a photoresist to a substrate as well as expensive clean room facilities. In light of this, this study examines ways to form a fine groove by using a micro-end mill. The relationship between the cutting conditions and the bending of a micro-end mill were experimentally examined. In addition, we calculated the tilt angle of the tool used in micro-groove milling on the basis of specific cutting force and tool stiffness.

Abstract: Grinding process can be considered as micro-cutting processes with the irregular abrasive grains on the surface of grinding wheel. The grain-workpiece interface directly forms the workpiece surface. Therefore, the study of the grain-workpiece interaction through micro-cutting analysis becomes necessary. But the experiments for single grain cutting are difficult to perform. Aimed at this problem, single grain cutting simulations of AISI D2 steel with a wide range of cutting parameters have been carried out with AdvantEdgeTM in this study. The effect of cutting parameters on cutting force, specific cutting force, material removal rate and critical depth of cut has been analyzed.

Abstract: The grinding process can be considered as micro-cutting processes with irregular abrasive grains on the surface of grinding wheel. Single grain cutting simulation of AISI D2 steel with a wide range of cutting parameters is carried out with AdvantEdgeTM. The effect of cutting parameters on cutting force, chip formation, material removal rate, and derived parameters such as the specific cutting force, critical depth of cut and shear angle is analyzed. The formation of chip, side burr and side flow is observed in the cutting zone. Material removal rate increases with the increase of depth of cut and cutting speed. Specific cutting force decreases with the increase of depth of cut resulting in size effect. The shear angle increases as the depth of cut and cutting speed increase. This factorial analysis of single grain cutting is adopted to facilitate the calculation of force consumption for each single abrasive grain in the grinding zone.