A method for thermal characterization and modeling of large gantry-type machine tools

Gomez-Acedo, Eneko; Olarra, Aitor; Calle, Luís Norberto López de la

doi:10.1007/s00170-011-3879-0

Cited by 49 publications

(18 citation statements)

References 20 publications

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“…The errors/inaccuracies can be reduced with the structural improvement of the machine tool through better design, manufacturing, and assembly practices [2]. Large machine tools are increasingly important because of the increasing demand for large parts, for example, in the production of wind turbines, which are growing in size with each new model [26]. With the increasingly high demand for precision machining it is critical to establish an accurate processing model, especially for heavy-duty overloaded machines with the characteristics of large weight and high load strength.…”

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

Load Induced Error Identification and Camber Curve Design of a Large-Span Crossbeam

Cheng

Luo

et al. 2013

Advances in Mechanical Engineering

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Load induced errors aroused by internal masses of machine tool components and external cutting forces are a main contributor that influences machining accuracy. A mathematical model for load induced errors identification of large-span crossbeam in heavy-duty machine tool was proposed. According to the identified load induced errors, a method for optimisation of the guideway camber curve on crossbeam by particle swarm optimisation was proposed. Geometric errors of y-axis along cambered crossbeam and noncambered crossbeam were calibrated, and multibody system theory was also introduced to predict theoretically the machining accuracy of machine tool with two kinds of crossbeam. The comparisons between two kinds of crossbeam show that after cambering, the geometric errors are decreased and can meet the requirements of ISO standard, and the machining accuracy is enhanced remarkably too. In addition, the indirect dynamic straightness error of z-direction along cambered crossbeam was measured by displacement sensors, and the response results show that even though at the start-stop moment, the straightness error is also within the reasonable range of ISO standard.

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Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

Load Induced Error Identification and Camber Curve Design of a Large-Span Crossbeam

Cheng

Luo

et al. 2013

Advances in Mechanical Engineering

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“…Increasing demands for large parts, especially in aerospace industry, electric power industry, and shipping industry, is boosting interest in large machine tools [1]. These large parts which were previously fabricated are now machined from monolithic blocks.…”

Section: Introductionmentioning

confidence: 99%

An approach to evaluate the effects of nonlinear traveling joints on dynamic behavior of large machine tools

Ding

Huang

Wang

et al. 2013

Int J Adv Manuf Technol

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In order to select the best possible design from various candidates based on structure configurations of traveling components, it is essential to evaluate the effects of traveling joints on dynamic behavior of large machine tools. Firstly, regression analysis and energy method were used to determine the nonlinear parameters of the metal-plastic joints. Then, a nonlinear receptance coupling approach was used to establish a simplified model of a large machine tool including nonlinear joints. The evaluations of the large machine tool were analyzed with different milling forces. The results show that the nonlinearity of traveling joints significantly influences the resonant frequency and the response amplitudes. Experimental verifications were performed on a prototype of a large machine tool for milling large gears.

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“…In the workshop, the direct environment of a machine tool can significantly influence the thermal behavior of its structure [3]. Internal heat sources such as the drive motors, the electronic and pneumatic systems, the spindle, and the linear guides induce gradients of temperature that imply the expansion of machine tool parts [4][5][6][7]. Load and cutting strength are non-negligible effects to consider, too [8,9].…”

Section: Introductionmentioning

confidence: 99%

Measurement Parameters Optimized for Sequential Multilateration in Calibrating a Machine Tool with a DOE Method

et al. 2016

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Improving volumetric error compensation is one of the machine tool user's key objectives. Smart compensation is bound to calibration accuracy. Calibration quality depends largely on its setup factors. An evaluation criterion is thus required to test the quality of the compensation deduced from these setup factors. The residual error map, which characterizes post-compensation machine errors, is therefore chosen and then needs to be evaluated. In this study, the translation axes of a machine tool were calibrated with a multilateration tracking laser interferometer. In order to optimize such measurements, the residual error map was then characterized by two appliances: a laser interferometer and the tracking laser already employed for the calibration, using for that purpose the sequential multilateration technique. This research work thus aimed to obtain a smart setup of parameters of machine tool calibration analyzing these two residual error maps through the Design Of Experiment (DOE) method. To achieve this goal, the first step was to define the setup parameters for calibrating a compact machine tool with a multilateration tracking laser. The second step was to define both of the measurement processes that are employed to estimate the residual error map. The third step was to obtain the optimized setup parameters using the DOE method.

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A method for thermal characterization and modeling of large gantry-type machine tools

Cited by 49 publications

References 20 publications

Load Induced Error Identification and Camber Curve Design of a Large-Span Crossbeam

Load Induced Error Identification and Camber Curve Design of a Large-Span Crossbeam

An approach to evaluate the effects of nonlinear traveling joints on dynamic behavior of large machine tools

Measurement Parameters Optimized for Sequential Multilateration in Calibrating a Machine Tool with a DOE Method

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