Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15

Abstract

Experiment of hard cutting GCr15 with PCBN cutting tools, the influence of tool’s inclination angle and cutting parameters (cutting speed and feed speed) on cutting forces and cutting temperature are studied. A three-dimensional finite elements model using the commercial software Deform 3D 5.03 is developed. The friction between the tool and the chip is assumed to follow a modified Coulomb friction law and the adaptive remeshing technique is using for the formation of chip. The workpiece material property is a function of temperature, strain, and strain rate in the primary and secondary shear zones. Finite element method is used to simulate three-dimensional precision cutting, including orthogonal cutting and oblique cutting. The cutting forces and back forces are slightly changed by tool’s inclination angle. However, in high cutting speed, the cutting force decrease as the tool’s inclination angle increase, while the cutting temperature increase as the tool’s inclination angle increase. The simulation results are compared with experimentally measured data and found to be in good agreement to some extent.

UG and VERICUT-Based Processing of Special-Shaped Stone Samples

“…Tool path of model generated.Making of Tool path can in manual or computer aided manufacturing (CAM) implementation way [2], for so complex surface processing we should selection CAM software to implementation, use UG software, program prepared , process driven surface of making and the tool axis of control are maximum difficulties, this try pieces machining in the horizontal work of HTM50200, its five axis of space structure form as Fig. 2, so as to reducing the frequently swing of B axis , improve processing efficiency,we should make driven surface along parts long to axis direction of cylindrical surface, project it to processing surface, and makes tool axis direction to vertical driven surface direction, avoid tool Rod appearing too much interference phenomenon [3]. The large model changes known by the curvature shape structure, such as a selection of smaller tool RADIUS enables processing to a range of large curvature, however this will increase the treating path, less efficient, so you can start with large-diameter cutters for roughing, then with a small radius tool by the application of reference tool, selecting large radius tool as a reference tool before doing secondary roughing.…”