Study of the influence of tool rake angle in ductile machining of optical quartz glass

Guo, Xiaoguang; Zhai, Ruifeng; Kang, Renke; Jin, Zhuji; Guo, Dongming

doi:10.1007/s00170-019-03920-x

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…The macro variables in SPH, such as temperature and density, can be calculated by converting the disordered point value into an integral interpolation form [19]. The estimated value of each particle can be obtained through the interpolation function, and then the differential form is converted to the integral form through the dynamics of continuum, and then the mechanical behavior of the entire system can be obtained [20]. The particle approximation function is:…”

Section: Sph Particle Simulationmentioning

confidence: 99%

Research on Optimization of Parametric Propeller Based on Anti-Icing Performance and Simulation of Cutting State of Ice Propeller

Lu¹,

Wu²,

Liu³

et al. 2021

JMSE

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When a ship sails in an ice area, the ice could cause damage to ship hull and the propeller as well as the rudder. In the design process of an ice class propeller, the strength verification of the propeller has always been the focus of the design and research of the ice propeller. Based on the International Association of Classification Societies Unified Requirements for Polar Class (IACS Polar UR), it is required that the maximum torque from the propeller cannot exceed the required value to ensure the safety of the propeller shafting equipment. This paper investigates the hydrodynamic performance of the propeller under the condition of satisfying the propeller’s ice strength. A parametric propeller optimization design procedure was established in which the thrust coefficient and open water efficiency solved by CFD method were selected as the objective function and optimization target, the maximum ice torque was used as the optimization constraint under the condition that the ship’s shafting equipment remains unchanged, the propeller pitch, thickness, and camber at each radial direction were taken as the optimization design variables, and the optimization algorithm of SOBOL and NSGA-II was adopted. The interaction mode of propeller and ice was simulated by the method of explicit dynamics. The equivalent stress and displacement response of the blade during the cutting process of the ice propeller were calculated, monitoring the ice destruction process. The results show that the multi-objective Pareto optimal solution set of thrust coefficient and open water efficiency of the ice class propeller was formed at the design speed while maintain the maximum ice torque not exceeding the original ice torque.

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Section: Sph Particle Simulationmentioning

confidence: 99%

Research on Optimization of Parametric Propeller Based on Anti-Icing Performance and Simulation of Cutting State of Ice Propeller

Lu¹,

Wu²,

Liu³

et al. 2021

JMSE

View full text Add to dashboard Cite

show abstract

“…Material removal modes are closely related to the undeformed chip thickness [8], and crack-free glass surface could be generated in the ductile mode adopting 45° tilt angle and feed speed up to 0.32 mm/ min. Guo et al [17] studied the ductile machining under various rake angles based on the SPH simulation model and found that the tool negative rake angle is beneficial to promote the ductile machining of quartz glass. Considering the actual diamond tool processing, the cutting angles of the abrasive grain to remove the processed material will also have an important influence on the mechanical force and material removal modes.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of abrasive grains and machined surface features for variable axis diamond grinding of quartz glass

Chen

Wang

Zhang

2020

J Braz. Soc. Mech. Sci. Eng.

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There is a fine application prospect for multi-axis grinding of hard and brittle materials with diamond ball end tool. The effects of tool inclination angles and grinding modes of multi-axis grinding of quartz glass on the dynamic characteristics of the diamond abrasives, surface topography, surface fragmentation phenomenon, and surface roughness were investigated in this work. Material removal characteristics and surface formation conditions would be significantly affected by the effective cutting speed, material stress characteristics, and movement space path derived from different grinding modes and tool inclination angles. The surface texture direction is mainly determined by feed direction of the cutter and initial cutting moment and geometry feature of the engaged diamond abrasives. The surface fragmentation phenomenon of the formed surface is apparent when the corresponding surface roughness values are relatively larger. The machined surface with significant surface fragmentation phenomenon is mainly produced by materials' brittle fracture modes, such as larger positive lead and smaller negative tilt under conventional grinding and smaller negative lead angles and larger positive tilt angles under down grinding. Ideal surface evenness could be obtained by using lead or tilt 0° for conventional and down grinding. The ground surface with smaller surface roughness could be produced when employing tool postures, such as negative lead or positive tilt under conventional grinding and positive lead or negative tilt under down grinding condition.

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Fabrication of PCD face grinding wheel with positive rake angle by femtosecond laser and its performance evaluation in cemented carbide grinding

Yin,

Chen,

Huang

et al. 2023

Diamond and Related Materials

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Study of the influence of tool rake angle in ductile machining of optical quartz glass

Cited by 7 publications

References 13 publications

Research on Optimization of Parametric Propeller Based on Anti-Icing Performance and Simulation of Cutting State of Ice Propeller

Research on Optimization of Parametric Propeller Based on Anti-Icing Performance and Simulation of Cutting State of Ice Propeller

Dynamic characteristics of abrasive grains and machined surface features for variable axis diamond grinding of quartz glass

Fabrication of PCD face grinding wheel with positive rake angle by femtosecond laser and its performance evaluation in cemented carbide grinding

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