Precision of surfaces machined on a lathe with geometric errors

Khusainov, R. M.; Yurasov, S. Yu.; Ziyatdinov, R R; Davletshina, G. K.; Гречишников, В. А.; Isaev, A. V.; Pivkin, Petr M.

doi:10.3103/s1068798x17030121

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…Definition of the starting point of the thinning can be made based on dependencies (11)(12)(13). For ceramic end milling cutter with basic geometric parameters (γ = −14°, = 5 , = 4 ) and with a toroidal part having a radius of curvature = 1 , the thinning must be performed by grinding at a distance of 0.754 from the beginning of the toroidal surface.…”

Section: Resultsmentioning

confidence: 99%

“…[12]. Reduced cutting forces, increased tool life when using ceramic end mills in comparison with carbide mills, and improved machined surface quality were obtained in [13].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, it is recommended to use negative rake angles to increase the strength of the cutting wedge made of brittle ceramics, while eliminating chipping caused by self-hardening of the machined material, it is advisable to reduce the axial depth of cut when face milling strategy, or use the smallest possible lead angle [2,3,[8][9][10][11][12][13][14][15]. For this purpose, as well as to increase the strength of the most loaded section at the transition from the peripheral to the end cutting edge [16,19], solid ceramic end mills are equipped with a corner radius.…”

Section: Introductionmentioning

confidence: 99%

“…The rake angle in normal sections γ N is quantified by the equation for finding the cosine of the angle between nonzero vectors (11). One of these vectors is tangent to the rake surface τ 1 (12), and other is normal to the toroidal surface at a control point on the cutting edge τ 2 (13)…”

mentioning

confidence: 99%

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Design of Toroid-Shaped Solid Ceramic End Mill

et al. 2019

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Electrical discharge machining (EDM) is one of the most accurate methods for machining conductive materials and has a number of important applications. In the EDM process the occurrence of electric charges between cathode and anode is accompanied by vibroacoustic signals, which can be used to develop highly efficient control and diagnostics systems. Experimental studies and modelling of the dynamic system of the EDM process carried out in this study show that parameters of acoustic signals can be used to estimate the current productivity and risks of the tool-electrode breakage and to optimize the tool feed rate. The obtained results of allows using acoustic signals in the control system of the tool electrode feed rate to prevent its breakage, and also setting the interelectrode gap to maximum productivity.

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Section: Resultsmentioning

confidence: 99%

“…[12]. Reduced cutting forces, increased tool life when using ceramic end mills in comparison with carbide mills, and improved machined surface quality were obtained in [13].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Design of Toroid-Shaped Solid Ceramic End Mill

et al. 2019

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“…They control the quality of products being part of control systems for various purposes; they ensure objectivity of measurements, etc. Current requirements for the quality of products cannot be met without the use of high-precision measurements [1][2][3]. Therefore, high metrological and operational requirements are imposed on measuring instruments.…”

Section: Introductionmentioning

confidence: 99%

Application of Measurement Signal Reduction to Improve Measurement Accuracy

Ziyatdinov¹,

Zakirova²

2018

IJET

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Most modern technical tasks require high precision measurements. To do this, it is necessary to analyze the causes of errors and take measures to reduce their influence on the accuracy of measurements. The causes of errors are very diverse and cannot always be identified. However, some systematic components of the measurement error can be described and calculated mathematically. In this case, the task of reducing the signal at the output of a measuring device to the form it would have when using an “ideal” device is reduced to calculating a certain linear operator which product to the measured signal allows obtaining the minimum systematic error. In this paper, the application of the reduction method is given by the example of a measuring instrument for the degree of polarization of light radiation which comprises three measuring channels for measuring the intensity of linearly polarized radiation. Each channel is built with the use of three operational amplifiers. The main errors of a measuring channel that can be described and determined are the errors of the operational amplifiers associated with the bias voltages and temperature drift. In real measuring systems there are much larger of such components. However, the use of computer equipment for modeling systems and processes, as well as measurements, removes all restrictions on the possibilities of processing the obtained data in a software way. With the help of computer technology it is possible to reduce the influence of perturbing effects and systematic errors, and also to eliminate gross errors. The random component of an error can be reduced by increasing the number of measurements and carrying out statistical data processing.

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