Temperature field modelling in the form grinding of involute gear based on high-order function moving heat source

Yang, Shuying; Chen, Weifang; Nong, Su; Liu, Dong; Yu, Houyun

doi:10.1016/j.jmapro.2022.07.014

Cited by 14 publications

(5 citation statements)

References 29 publications

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“…On the other hand, the multigranular wheel showed higher grain fracture toughness. The physics of the grinding phenomenon shows that there was increased grain chipping in the conventional disc, showing abrasive wear [ 53 ]. With regard to the quality of grinding, the conventional wheel had a greater depth of abrasive grains micro-cuts, resulting in an increase in surface roughness compared to the multigranular disc [ 54 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of a New Type of Grinding Wheel with Multi-Granular Abrasive Grains on Surface Topography Properties after Grinding of Inconel 625

et al. 2023

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Finishing operations are one of the most challenging tasks during a manufacturing process, and are responsible for achieving dimensional accuracy of the manufactured parts and the desired surface topography properties. One of the most advanced finishing technologies is grinding. However, typical grinding processes have limitations in the acquired surface topography properties, especially in finishing difficult to cut materials such as Inconel 625. To overcome this limitation, a new type of grinding wheel is proposed. The tool is made up of grains of different sizes, which results in less damage to the work surface and an enhancement in the manufacturing process. In this article, the results of an experimental study of the surface grinding process of Inconel 625 with single-granular and multi-granular wheels are presented. The influence of various input parameters on the roughness parameter (Sa) and surface topography was investigated. Statistical models of the grinding process were developed based on our research. Studies showed that with an increase in the cutting speed, the surface roughness values of the machined samples decreased (Sa = 0.9 μm for a Vc of 33 m/s for a multigranular wheel). Observation of the grinding process showed an unfavorable effect of a low grinding wheel speed on the machined surface. For both conventional and multigranular wheels, the highest value for the Sa parameter was obtained for Vc = 13 m/s. Regarding the surface topography, the observed surfaces did not show defects over large areas in the cases of both wheels. However, a smaller portion of single traces of active abrasive grains was observed in the case of the multi-granular wheel, indicating that this tool performs better finishing operations.

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Section: Resultsmentioning

confidence: 99%

Effects of a New Type of Grinding Wheel with Multi-Granular Abrasive Grains on Surface Topography Properties after Grinding of Inconel 625

et al. 2023

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occurred at

in an infinite homogeneous space, as shown in Figure 3 , the temperature change at any point

in the space over time

could be calculated as:

…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, continuous grinding on the tooth grooves multiple times blocked the fluid entering the contact area and promoted grinding temperature [18]. According to the grinding temperature model established by Yang et al [19], when a transient point heat source Q d occurred at O(0, 0, 0) in an infinite homogeneous space, as shown in Figure 3, the temperature change at any point M(x, y, z) in the space over time τ could be calculated as: on the tooth grooves multiple times blocked the fluid entering the contact area and promoted grinding temperature [18]. According to the grinding temperature model established by Yang et al [19], when a transient point heat source d Q occurred at (0,0,0) O in an infinite homogeneous space, as shown in Figure 3, the temperature change at any point ( , , ) M x y z in the space over time τ could be calculated as: As shown in Figure 4, when the heat source was replaced by an instantaneous infinitely long linear heat source along the z-axis, and the uniform heat output was s Q , the temperature change to any point ( , , ) M x y z in space over time τ was the integral of the point heat source along an infinitely long straight line, as shown below: In which T was the temperature change, c was the specific heat capacity of workpiece material, ρ was the density of workpiece material, and α was the thermal conductivity.…”

Section: Grinding Temperaturementioning

confidence: 99%

Experimental Investigation on Microstructure Alteration and Surface Morphology While Grinding 20Cr2Ni4A Gears with Different Grinding Allowance Allocation

Wang,

Peng,

Zhou

et al. 2023

Materials

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Transmission gear is a key component of vehicles and its surface integrity affects the safety of the transmission system as well as the entire mechanical system. The design and optimization of allowances in form grinding are important for improving dimensional accuracy and machining efficiency during the manufacturing of heavy-duty gears. This work aims to investigate the effects of grinding allowance allocation on surface morphology, grinding temperature, microstructure, surface roughness, and microhardness fluctuation during the form grinding of 20Cr2Ni4A gears. Results indicated that grinding temperature was primarily influenced by rough grinding involving significant grinding depths exceeding 0.02 mm. The ground surface exhibited slight work hardening, while thermal softening led to a reduction in microhardness of around 40 HV. Ground surface roughness Ra varied from 0.930 μm to 1.636 μm, with an allowance allocation of the last two passes exerting the most significant influence. Analysis of surface and subsurface microstructures indicated that a removal thickness of 0.02 mm during fine grinding was insufficient to eliminate the roughness obtained from rough grinding. Evident ridges, gullies, and surface defects such as material extraction, adhesion, and plastic deformation were also observed. The proposed grinding strategy was validated in practical manufacturing with good surface quality and geometrical accuracy.

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“…Jiang et al 14 analyzed the influence of grinding parameters on the thickness of the white layer during form grinding of quenched transmission gear was, and investigated the microstructure evolution and mechanism of severe burn formation. Based on high-order function curve moving heat source distribution in the grinding zone, Yang et al 15 established a new temperature model, however, compared with the traditional models, the new model greatly reduce the disadvantages caused by improper heat source shape assumptions under the nonuniform grinding conditions along the tooth profile. Zhao et al 16 gained the effect of grinding parameters such as spindle speed and ultrasonic amplitude for the characteristics of residual compressive stress accumulation by comparing the single factor experimental and finite element simulation results.…”

Section: Introductionmentioning

confidence: 99%

Grinding wheel profile design and temperature field analysis of the pinion for internal meshing gear with curve configuration

Liang,

Hao,

Zhao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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To further develop the performance testing and practical application of internal meshing gear with curve configuration, the grinding manufacturing method is proposed in this paper. Based on basic principle of internal meshing gear with curve configuration, Newton’s iterative method is used to derive the contact line condition equation during the process of form grinding. Then, the spatial coordinate transformation relationship of the pinion is established, and normal profile of the grinding wheel is derived. An improved transversal algorithm is proposed to analyze the tooth profile error after form grinding simulation, and the results verify the correctness of the designed grinding wheel. A meshing model with single tooth is established. The effects of different parameters on the grinding temperature field under dry and wet grinding conditions are simulated respectively, which will be helpful to the optimization and control of temperature in grinding process. The research results lay the essential theoretical foundation and engineering analysis for practical form grinding applications of the new internal gears. Further study on experimental analysis of grinding manufacturing process of the new tooth surfaces will be carried out.

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Temperature field modelling in the form grinding of involute gear based on high-order function moving heat source

Cited by 14 publications

References 29 publications

Effects of a New Type of Grinding Wheel with Multi-Granular Abrasive Grains on Surface Topography Properties after Grinding of Inconel 625

Effects of a New Type of Grinding Wheel with Multi-Granular Abrasive Grains on Surface Topography Properties after Grinding of Inconel 625

Experimental Investigation on Microstructure Alteration and Surface Morphology While Grinding 20Cr2Ni4A Gears with Different Grinding Allowance Allocation

Grinding wheel profile design and temperature field analysis of the pinion for internal meshing gear with curve configuration

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