Wear behavior of diamond wheel for grinding optical connector ferrule — FEA and wear test —

Abstract

The grinding characteristics and the wear behavior of diamond wheel for grinding the optical connector ferrule were investigated by finite element analysis (FEA) and wear test. FEA of contact between diamond wheel and ferrule shows that the subsurface damage area of ferrule is 13µm from the interface of abrasive particle and matrix. Fallout of abrasive particle is affected by the stress state at the interface. A 2-D finite element model was established to calculate the distribution of stress at the interface. As the result of FEA, fallout condition of abrasive was concerned with the ratio of the critical protrusion; the ratio of particle size is about 0.6. FE model was established to investigate the effects of the diamond concentration of wheel. The FEA result shows that the lower concentration of it has larger wear volume due to the small stress propagation.. To investigate grinding performance, the pin-on-disc wear test was carried out for three types of concentrations 75%, 100% and 125%. Through the wear test, it was confirmed that the 75% wheel concentration has the highest amount of wear volume. This result shows good agreement with that of FEA. And 100% concentration by considering the grinding ratio of the wheel shows the best optimized result for the grinding performance.

Stress characteristics and fracture wear of brazed CBN grains in monolayer grinding wheels

“…To understand the grain-matrix bonding failure, Zhou et al [26] used a two-dimensional finite element model to compare the stresses at the grain-matrix interface. Suh et al [27] analyzed the stress distributions in grains in resin-bonded diamond wheels during the grinding of an optical connector ferrule, and reported that the grain breaking could be quantified by the ratio of critical protrusion height to grain diameter. Geometry effect of grains has also been studied, such as spherical [24,25] and pyramidal [26,27] grains.…”

“…Suh et al [27] analyzed the stress distributions in grains in resin-bonded diamond wheels during the grinding of an optical connector ferrule, and reported that the grain breaking could be quantified by the ratio of critical protrusion height to grain diameter. Geometry effect of grains has also been studied, such as spherical [24,25] and pyramidal [26,27] grains. In the studies by Zhou et al [26] and Suh et al [27], however, the depth of a grain embedded in a bonding layer was beyond 60% of the grain diameter, indicating that the grain protrusion, or the exposing height of the grain above the bonding layer was low.…”

“…Geometry effect of grains has also been studied, such as spherical [24,25] and pyramidal [26,27] grains. In the studies by Zhou et al [26] and Suh et al [27], however, the depth of a grain embedded in a bonding layer was beyond 60% of the grain diameter, indicating that the grain protrusion, or the exposing height of the grain above the bonding layer was low. This means that the investigations were for cases of smaller chip storage spaces corresponding to a lower material removal rate.…”

Process parameters optima in quick-point grinding ceramics based on the intelligent algorithm

“…Hard-brittle materials are featured by high level of hardness, thermal stability, and corrosion resistance, thus enjoying a wide range of application in national defense, aerospace industry, precision instrument, and so on. [1][2][3] Quick-point grinding combines high surface quality of grinding and high efficiency of turning, and so far it has been widely utilized in the processing of axles. 4 Among others, YD Gong et al 5 conducted research in the parameter relationship between temperature field and surface micro hardness in quickpoint grinding.…”

Static & dynamic performances analysis and optimization design for the whole casting column of a certain high-speed horizontal machining center using ABAQUS

“…The column can be driven around (X axis) through the screw rod of the base. Finite element method is widely used in structural design of machining center and got a good validation [5][6][7]. In this paper, the stress and deformation distributions under different conditions are simulated by ABAQUS software.…”