Design and dynamic optimization of an ultraprecision diamond flycutting machine tool for large KDP crystal machining

Liang, Yingchun; Chen, Wanqun; Bai, Qingshun; Sun, Yazhou; Chen, Guoda; Zhang, Qiang; Sun, Yang

doi:10.1007/s00170-013-5020-z

Cited by 68 publications

(36 citation statements)

References 18 publications

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“…If the spatial frequencies of machined surface in the cutting direction do not enter into the evaluation range of middle-frequency range, the values of natural frequencies must be less than 385 Hz, for which the corresponding spatial frequencies belong to the evaluation range of Band 1 and need not satisfy the PSD specification. From the viewpoint of actual engineering, it can be fully achieved to make the first few order natural frequencies (taking the first six order natural frequencies as the example) less than 385 Hz [3]. It can be controlled in the machine design stage, and can also be realized by adjusting the rigidity of the existing machine tool.…”

Section: Frequency Domain Error Allocationmentioning

confidence: 99%

“…The surface quality requirement of the machined parts becomes higher and higher, especially in some application fields such as the precision optics [1]. This high requirement is not only represented by the realization of ultra-low PV and RMS values of the conventional surface roughness error in the spatial domain, but reflected by the harsh control of surface errors in the full spatial frequency domain [2,3]. The manufacturing of this kind of ultra-precision parts still mainly rely on the Ultraprecision Machine Tool (UMT), and the majority of the machining type is error-copying machining, which brings the difficulty and challenge for the design and manufacture of the UMT.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Accuracy Design Method of Ultra-precision Machine Tool

Guoda

Sun

Zhang

et al. 2018

Chin. J. Mech. Eng.

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Ultra-precision machine tool is the most important physical tool to machining the workpiece with the frequency domain error requirement, in the design process of which the dynamic accuracy design (DAD) is indispensable and the related research is rarely available. In light of above reasons, a DAD method of ultra-precision machine tool is proposed in this paper, which is based on the frequency domain error allocation. The basic procedure and enabling knowledge of the DAD method is introduced. The application case of DAD method in the ultra-precision flycutting machine tool for KDP crystal machining is described to show the procedure detailedly. In this case, the KDP workpiece surface has the requirements in four different spatial frequency bands, and the emphasis for this study is put on the middle-frequency band with the PSD specifications. The results of the application case basically show the feasibility of the proposed DAD method. The DAD method of ultra-precision machine tool can effectively minimize the technical risk and improve the machining reliability of the designed machine tool. This paper will play an important role in the design and manufacture of new ultra-precision machine tool.

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Section: Frequency Domain Error Allocationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Accuracy Design Method of Ultra-precision Machine Tool

Guoda

Sun

Zhang

et al. 2018

Chin. J. Mech. Eng.

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show abstract

“…Forces and displacements can be in-phase or out-of phase. As output, a harmonic analysis provides harmonic displacements at each degree of freedom (DOF), usually out of phase with the applied loads, but also other derived and useful quantities, such as stresses and strains (Herrin 2012, Liang et al 2013). Thanks to the information it provides, the harmonic analysis can be used to make sure that a given design can withstand sinusoidal loads at different frequencies (e.g., an engine running at different speeds), but also to detect resonant responses and avoid them if necessary (by using dampers, for example).…”

Section: Analysis Of Vibrations In Briefmentioning

confidence: 99%

Harmonic Analysis and Dynamical Response Optimization in Ceramic Tile Finishing

Pavlović¹,

Minak²,

Lucisano³

et al. 2017

JSSCM

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This paper investigates the dynamic response of a large production machine used for surface finishing of oversized ceramic tiles through tool machining. In particular, the study aims at improving this phase of the industrial process, as well as the overall quality of the final products. As the finite element method has become an essential solution technique in many areas of engineering related to dynamic processes, the FEM is utilized in the optimization of machine basement for ceramic tile finishing. Two different basements of cutting machine have been considered as alternative design solutions. The responses in frequency and phase have been observed and compared. Stresses and strains have been also considered for comparison. This numerical computation permitted to select a convenient design option for the basement.

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“…High-performance machineries for industrial applications, such as high-speed automated assembly lines and machine tools, frequently experience vibrations induced by high dynamic loads, which are possibly detrimental for their operation (Altintas 2012, Liang et al 2013, Fragassa 2017. In practice, due to company production scheduling and resource issues, vibration issues are often detected at late steps of the design workflow, when the machine prototype is assembled and firstly tested.…”

Section: Introductionmentioning

confidence: 99%

“…In practice, due to company production scheduling and resource issues, vibration issues are often detected at late steps of the design workflow, when the machine prototype is assembled and firstly tested. In such an instance, experimental measurements are generally performed in order to identify the critical parts of the machine and A Martini et al: Structural and Elastodynamic Analysis of Rotary Transfer Machines by FEM 2 properly modify their design (Schedlinski et al 2002, Liang et al 2013, Pavlovic et al 2016). This process eventually proves costly and time consuming.…”

Section: Introductionmentioning

confidence: 99%

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

Martini¹,

Troncossi²,

Vincenzi³

2017

JSSCM

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Vibration monitoring and control are central topics for machine tools, since high vibration levels reduce the quality of machined surfaces and shorten the tool life. In order to predict potential vibration issues since the early design stage, it is necessary to implement ad hoc numerical models for modal analysis. This requires significant efforts and possible conflicts with tight production scheduling of companies. This work focuses on a specific family of rotary transfer machines for the manufacturing of parts related to lock&keys industry. It investigates the possibility to achieve an acceptable estimation of the elastodynamic behavior of the machine tools through limited modifications of the Finite Element (FE) models used for structural analysis, which are generally available in the early phases of the design process. The structural FE model of a new machine tool is implemented and validated through experimental tests performed on a prototype. Then, the elastodynamic FE model is derived and simulated. The numerical results are consistent with the data provided by Experimental Modal Analysis (EMA). Hence, the proposed approach is confirmed viable and will be integrated in the company workflow of future machine designs.

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Design and dynamic optimization of an ultraprecision diamond flycutting machine tool for large KDP crystal machining

Cited by 68 publications

References 18 publications

Dynamic Accuracy Design Method of Ultra-precision Machine Tool

Dynamic Accuracy Design Method of Ultra-precision Machine Tool

Harmonic Analysis and Dynamical Response Optimization in Ceramic Tile Finishing

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

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