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Epitrochoid heat flux distribution model for cylindrical grinding considering influence of process parameter

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Abstract

The main disadvantage caused by the traditional heat sources is due to the lack of adaptability to the change of process parameters, resulting in a larger calculation error in the calculation of grinding temperature. For this, an epitrochoid heat flux distribution (EHFD) model for cylindrical grinding considering the influence of process parameters is established. In doing so, the grinding trajectory of two adjacent grains that can vary adaptively with the process parameters is employed to determine the equation of epitrochoid heat flux curve, and the grinding temperature is further obtained by the moving heat source theory. After the validation of the grinding temperature experiment and comparisons with the traditional heat sources, the superiority of the proposed method is reflected in grinding trajectory, undeformed chip thickness, heat source shape, and grinding temperature at the varied process parameters. The change in process parameters can make the epitrochoid heat flux distribution exhibit the widely used triangular heat source characteristic at its leading edge, causing the newly proposed heat source to have a better temperature prediction ability than other heat source models.

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Data availability

All data supporting the findings of this study are included in this article.

Code availability

The method codes involved in this paper are not applicable.

Abbreviations

a gmax :

Maximum undeformed chip thickness (mm)

a p :

Grinding depth (μm)

b w, b s :

Widths of workpiece and wheel (m)

c f , c g , c w :

Specific heat capacities of grinding fluid, abrasive grain and workpiece (J/(kg·K))

E s, E w :

Young’s moduli of wheel and workpiece (GPa)

f a(x), f b(x):

Trajectory equations of the grains a and b

F(x):

Equation of the epitrochoid heat source curve

F max, F min :

Maximum and minimum values of epitrochoid heat source curve

F n, F t :

Normal and tangential grinding forces (N)

h f, h w :

Convection heat transfer coefficients of grinding fluid and workpiece (W/(m2·K))

k f, k g, k w :

Thermal conductivities of grinding fluid, abrasive grain and workpiece (W/(m·K))

l c :

Real contact arc length (mm)

N d :

Active grits number per unit area

O 1-xy :

Global coordinate system

O 1- :

Polar coordinate system

q(ξ):

Heat flux into workpiece (W/m2)

q t :

Total grinding heat flux (W/m2)

r 0 :

Effective contact radius of grain (mm)

r s, r w :

Radii of wheel and workpiece (m)

R r :

Roughness factor of wheel

R w :

Energy partition of workpiece

R wch , R ws :

Workpiece-chip partition ratio and workpiece-wheel partition ratio

t :

Single grinding time

T :

Grinding temperature (℃)

v s, v w :

Speeds of grinding wheel and workpiece (m/s)

ω s, ω w :

Angular velocities of grinding wheel and workpiece (rad/s)

x a, y a :

Trajectory equations of the grains a

x b, y b :

Trajectory equations of the grains b

α w, α g :

Thermal diffusivities of workpiece and abrasive grain (m2/s)

β w :

Thermal property parameter for workpiece (m2/s)

υ s , υ w :

Poisson’s ratios of wheel and workpiece

θ a, θ b :

Polar angle of grains a and b (°)

θ c :

Half of grit tip angle (°)

φ c :

Shear angle (°)

γ c :

Shear strain

\({\rho }_{f}\) :

Density of grinding fluid (kg/m3)

\({\eta }_{f}\) :

Viscosity of grinding fluid (Pa·s)

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Funding

This work was supported by the National Natural Science Foundation of China (No.52175160) and the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No.KJQN202301347).

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Authors

Contributions

CW: investigation, methodology, software, writing—review and editing. YZ: investigation, software, data curation, writing—original draft. JL: validation, data curation. YZ: investigation, formal analysis, visualization. FM: conceptualization, funding acquisition, project administration, supervision, writing—review and editing.

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Correspondence to Fanming Meng.

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Wang, C., Zheng, Y., Long, J. et al. Epitrochoid heat flux distribution model for cylindrical grinding considering influence of process parameter. Int J Adv Manuf Technol 129, 4829–4844 (2023). https://doi.org/10.1007/s00170-023-12564-x

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