Dynamic compensation technology of the spindle error motion of a precision lathe

Chen, M.Q.; Yang, Chunfeng

doi:10.1016/0141-6359(89)90067-6

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…The significant share among different types of processing is occupied by well study turning which is a test example for the results received by different authors [1,2,4,[7][8][9].…”

Section: Mathematical Model Of Turning Metal-cutting System Accuracymentioning

confidence: 99%

Bases of variational method for calculating of metal-cutting systems accuracy

2018

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The bases of a variation method to calculate the metal-cutting systems accuracy for the first time are systemically stated in this paper. The main attention is paid to a problem of joint influence of geometrical accuracy of machine tools and cutting tools parameters on the details processed surfaces accuracy. The general mathematical model of metalcutting systems accuracy is presented in this work. The general model is the basis to develop the full mathematical model of turning metal-cutting system accuracy. The results of accuracy modeling at turning with a wide cutter are received when studying nature of influence of the lathe and the cutting tool geometrical errors on processing accuracy of cylindrical and face surfaces. The directions of further researches in the field of calculations of metal-cutting systems accuracy at difficult surfaces processing by the shaped cutting tool and also when accounting rigidity of the systems elements and the proceeding processes are revealed in the presented work. * Corresponding author: olesya-anikeeva@yandex.ru MATEC Web of Conferences 224, 01038 (2018)

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“…The significant share among different types of processing is occupied by well study turning which is a test example for the results received by different authors [1,2,4,[7][8][9].…”

Section: Mathematical Model Of Turning Metal-cutting System Accuracymentioning

confidence: 99%

Bases of variational method for calculating of metal-cutting systems accuracy

2018

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“…F AST tool servo (FTS) was initially proposed to compensate for the motion errors of diamond turning machines [1], [2], and it was then widely extended to generate noncircular pistons [3], [4], non-axisymmetric freeforms [5], [6], and more complicated micro/nanostructured surfaces [7]- [9]. In general, a complete FTS mainly consists of three parts, namely the actuation, motion transmission, and motion control systems.…”

Section: Introductionmentioning

confidence: 99%

Design and Control of a Piezoelectrically Actuated Fast Tool Servo for Diamond Turning of Microstructured Surfaces

Zhu

Chen

Huang

et al. 2020

IEEE Trans. Ind. Electron.

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This paper reports on the mechanism design, dimension optimization, closed-loop control, and practical application of a piezoelectrically actuated fast tool servo (FTS) for the diamond turning of micro-structured surfaces. With the mechanism, a finite element based analytical model is developed to theoretically relate the working performance with its structural dimensions. Considering its application for micro/nanocutting, the structural dimensions of the mechanism are deliberately determined through evolutionarily optimizing a comprehensive objective. To ultra-finely track the cutting trajectory with a high bandwidth, a PID controller together with the dynamics inversion based feedforward compensation is optimally designed with assistance of the Nyquist diagram, and a disturbance observer is further employed to compensate for the inherent hysteresis nonlinearity as well as external cutting force disturbances. Both open-loop and closed-loop experimental tests on the prototype suggest that a stroke of 15 µm and a closed-loop bandwidth of 1730 Hz are achieved. Taking advantage of the newly developed FTS, two typical micro-structured surfaces are ultra-precisely turned, well demonstrating the effectiveness of the FTS.

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“…Apart from the above, many researchers have used the piezoelectric actuator as an error compensation device in their applications. Examples are Chen and Yang [31], Okazaki [32], Kim and Kim [33], who made use of piezoelectric actuators for on-line compensation of errors in turning. The piezoelectric actuator is regarded as the most suitable error compensation device in machining because of its fast response and ®ne resolution characteristic in microfeeding.…”

Section: Introductionmentioning

confidence: 99%

Roundness improvement in taper machining based on two-dimensional active error compensation

Fung

Yang

Chan

2001

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, an on-line forecasting compensatory control (FCC) strategy is successfully employed to improve the workpiece accuracy in taper machining by compensating the relative two-dimensional motion errors between the workpiece and the cutting tool. The indirect measurement set-up is developed to determine the motion errors, in both radial and longitudinal directions, of the spindle which positions the workpiece via a master taper. Also, the straightness motion errors of the x-y slide are determined to give the actual tool positions. The reference datum in these measurements, i.e. the master form error and the slide profile, can be determined under on-machine conditions and highly accurate precalibrated references are not required. Based on the autoregressive moving average (ARMA) technique, the two-dimensional motion errors are modelled and their future values forecasted and compensated by means of a piezoelectric actuator. The adequate model order and parameters are found by performing off-line simulations. The effectiveness of the FCC strategy is also evaluated by comparing the roundness results with and without compensation. Experimental cutting with FCC reveals that a maximum improvement of 68 per cent and an average improvement of 41 per cent can be achieved for workpiece roundness in this taper machining process.

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Dynamic compensation technology of the spindle error motion of a precision lathe

Cited by 6 publications

References 2 publications

Bases of variational method for calculating of metal-cutting systems accuracy

Bases of variational method for calculating of metal-cutting systems accuracy

Design and Control of a Piezoelectrically Actuated Fast Tool Servo for Diamond Turning of Microstructured Surfaces

Roundness improvement in taper machining based on two-dimensional active error compensation

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