The Effects of Thermal Deformation on Flatness in Precision Grinding

Wang, Jin Jen; So, H.

doi:10.1080/01495739.2010.550822

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…When the temperature was not uniform in various directions, thermal stress caused by different structural parameters would occur. Thus, the process can be described by thermal elastic model, controlled by a set of equilibrium equations, geometric equations and constitutive equations as follows [8].…”

Section: Finite Element Analysis Thermal Elastic Equationsmentioning

confidence: 99%

Optimum Design of the Precise Surface Plate Based on Thermal Deformation Experiment and FEA

Liu

Yuan

2013

Journal of Thermal Stresses

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During the precision measurement and machining process, the temperature may change the shape and dimension of the machine parts. This kind of thermal deformation will lead to a decrease in the measurement accuracy and machining accuracy, and it will even affect the normal performance of the machinery. A precise flat plate is usually used as a benchmarking tool. Its flatness will be changed when the environmental temperature deviates from the standard temperature 20 C, which will influence the plate benchmark accuracy and result in erroneous measurement. The thermal deformation of conventional type and well-ribbed type precise flat plates were analyzed in this research. The finite element analysis software ANSYS simulation results indicated that their thermal deformation was not equal along the surface. The stress in the center was lower and showed a concentric circle distribution, while the stress at four corners was higher. So a ring-ribbed type precise flat plate was designed, and its ANSYS simulation and experimental results revealed that the ring-ribbed type flat plate had better anti-thermal deformation behavior, and its flatness was changed less with the temperature. Based on our research, it is suggested that the ring-ribbed type precise flat plate should take precedence in designing datum plane.

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Section: Finite Element Analysis Thermal Elastic Equationsmentioning

confidence: 99%

Optimum Design of the Precise Surface Plate Based on Thermal Deformation Experiment and FEA

Liu

Yuan

2013

Journal of Thermal Stresses

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“…Temperature variation of the machine tool structure due to its internal heat generation and heat exchange with the ambient environment causes thermal deformation [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Temperature Deformations of the Base of Cylindrical Grinding Machines

2022

IJOMAM

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Since grinding is a finishing process, the study of the influence of various factors on the accuracy of processing is an important task. One of the main reasons for the occurrence of grinding errors is the temperature deformation of parts and units of grinding machines. This paper is devoted to the experimental studies of temperature deformations of the bed of cylindrical grinding machine tools, resulting from its heating under the influence of various heat sources: namely, due to the friction of parts and units in the drives and guideways of the grinding headstock and table; due to the cutting fluid, which absorbs heat from the grinding zone and sprays to the bed; due to increase of environment temperature. Temperature deformations of the bed were estimated by changing the relative position of the grinding wheel and the table of cylindrical grinding machine, with the workpiece, fixed on it when it was moving during machine tool operation. A comparative analysis of the results of the study of cylindrical grinding machine tools of the same models is done. The maximum thermal displacement of the workpiece points caused of the non-straightness of the table movement due to temperature deformations is given. Experimental data are given on the displacement of the grinding wheel and the workpiece relative to each other depending on the operating time of the machine. In addition, the speed of movement of the control points of the workpiece as a result of the rotation of the table, caused by temperature deformations, are presented. The influence of changes in the ambient temperature during the work shift on the deviation from the straightness of the movement of the cylindrical grinding machine table was also evaluated.

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“…Scholar Jin Jen Wang and So.H calculated the three-dimensional temperature field and the corresponding deformation field of the precision grinding of the work-piece [1] . Hefei General Machinery Research Institute Yang Dingjun, using the response surface method, combined experimental temperature values to calculate the convective heat transfer coefficient and heat distribution situation.Scholars Shao Junpeng, Yu Xiaodong, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature distribution of Reinforcing plate arrangement on the Heavy-duty Vertical Lathe Workbench

Zhang¹,

Yu²,

Li³

et al. 2013

Interdisciplinary Research Theory and Technology

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Abstract. During the heavy-duty vertical lathe work and the system operation, due to the workbench oil film friction and the self-generated heat will be transmitted to the workbench through the contact surface between oil film and workbench, make workbench temperature distribution uneven and produce large thermal deformation which can affect the machining accuracy. The article on different locations of the workbench Reinforcing plate temperature field simulation analysis, based on heat transfer theory and the actual working conditions, calculating the workbench of the convective heat transfer coefficient and the initial boundary conditions, analyzing the simulation results, it reveals the influence of reinforcing plate arrangement to the workbench temperature distribution law, and get the best position of reinforcing plate on the heavy-duty vertical lathe workbench. These study results would provide a theoretical basis for the structural design of the workbench.

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The Effects of Thermal Deformation on Flatness in Precision Grinding

Cited by 7 publications

References 13 publications

Optimum Design of the Precise Surface Plate Based on Thermal Deformation Experiment and FEA

Optimum Design of the Precise Surface Plate Based on Thermal Deformation Experiment and FEA

Investigation of Temperature Deformations of the Base of Cylindrical Grinding Machines

Influence of Temperature distribution of Reinforcing plate arrangement on the Heavy-duty Vertical Lathe Workbench

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