Abstract
Abstract Carbon fiber reinforced polymer (CFRP) is widely used in high-tech industries because of its interesting characteristics and properties. This material presents good strength and stiffness, relatively low density, high damping ability, good dimensional stability, and good corrosion resistance. However, the machinability of composite materials is complex because of the matrix/fiber interface, being a challenging machining material. The CFRP milling process is still necessary to meet dimensional tolerances, the manufacture of difficult-to-mold features like pockets or complexes advance surfaces, finish the edges of laminated composites, or drill holes for the assembly of the components. Besides, the demand for low-cost, reconfigurable manufacturing systems of the industry demonstrates that the application of industrial robots (IRs) in the CFRP milling process becomes an alternative for providing automation and flexibility. Therefore, the objective of this work is to evaluate the performance of the low payload IR KUKA KR60 HA in a milling experiment of CFRP, which indicates its potential application as an alternative to milling process. Furthermore, the influence of the cutting tool geometry as well as the cutting parameters in the machining behavior with IRs is evaluated.
Highlights
Carbon fiber reinforced polymer (CFRP) is widely used in high-performance applications, where high strength-toweight ratio and stiffness constitute important requirements
Considering the evaluated cutting tools in the wove material milling process, the cutting tool F1 showed an increase in surface roughness Ra as the cutting speed increases in wove material (Figure 5)
Pull-out occurred for all combinations of up milling cutting parameters
Summary
Carbon fiber reinforced polymer (CFRP) is widely used in high-performance applications, where high strength-toweight ratio (specific strength) and stiffness constitute important requirements. CFRP has two main components: (i) high-strength carbon fibers and (ii) the flexible and tough matrix material [1]. This provides interesting characteristics and properties such as specific strength and stiffness, relatively low density, high damping ability, good dimensional stability, and good corrosion resistance. These qualifications call attention to large industrial areas such as automotive, aerospace, marine industries, and civil engineering, wind-turbines, sport equipment, and robotics [2,3]. It possesses a high potential for the substitution of, for example, heavier aluminum and steel [4,5]. Despite the research published over the past decades on the process of machining CFRP, this theme is still in the early stages of development
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