Influences of control error and setting error on machining accuracy of internal gearing power honing

Han, Jiang; Zhu, Yonggang; Xia, Lian; Wu, Liang

doi:10.1007/s00170-018-2722-2

Cited by 3 publications

References 25 publications

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Modeling and machining of integral impeller based on NURBS curve

Wei

Hou

et al. 2021

Int J Adv Manuf Technol

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NURBS curve is applied to model and machine of integral impeller to get better smooth streamline in this work. In order to get high precision surface modeling of impeller, complex surface modeling method for impeller is studied through inputting NURBS curves and surfaces obtained by MATLAB into CAXA Manufacturing Engineer, which solves the problem that cannot be designed NURBS curve and surface directly in the CAD software. Grooving and expanding groove tool paths are obtained according to the NURBS curve of top curve and root curve, and it's interpolation step size and the row spacing are determined according to the curvature of the curve and interpolation period. Meanwhile, Five-axis side milling method is used to achieve the vane finish machining, and streamline processing method is adopted to realize the finish machining of the channel. All work is verified in a virtual simulation system of 5MC850-C machining center, and these simulation results show that machining accuracy error of the impeller is between -0.007 mm and 0.012 mm, meeting tolerance range of the impeller design.

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Modeling and machining of integral impeller based on NURBS curve

Wei

Hou

et al. 2021

Int J Adv Manuf Technol

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Tooth surface error correction method of hypoid gear based on Morris-LM(Levenberg-Marquard) fusion algorithm

Li,

Wang,

Chen

et al. 2024

Preprint

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The accuracy of tooth flank can be affected by errors occurred in adjustment parameters on machine tool in the real processing of hypoid gears. The complex mutual coupling and nonlinear relationship between these makes the improvement of processing accuracy on tooth flank more challengeable. This paper presents a method for correcting tooth flank errors in gears using the Morris-LM (Levenberg-Marquard) fusion algorithm. The Morris algorithm is utilized for global sensitivity analysis of processing parameters, allowing for an intuitive comparison of effects caused by errors. Additionally, a random disturbance amount, obeying a normal distribution, is introduced into the global system to accurately reflect the key processing parameters that greatly impact on tooth flank errors in the actual processing. The complex nonlinear model established with correction of tooth flank errors contains multiple key processing parameters and the evaluation of flank accuracy is conducted by the integration of deviations containing tooth-top, tooth-root, and tooth-mean-square. Then key machining parameters are adjusted by the LM algorithm with a trust-region strategy to enhance the efficiency of tooth flank correction. The multiple measurements experiment on different tooth flanks were conducted after the corrected processing parameters. The results revealed that viewed from the concave flank, the deviations of tooth-top, tooth-root, and tooth-mean-square were respectively decreased by a minimum of 80.34%, 74.23% and 81.24%. Furthermore, viewed from the convex flank, the deviations from the above were also respectively decreased by a minimum of 83,99%,80.33% and 82.35%. These results verified the high accuracy of the proposed algorithm in correcting the tooth flanks of hypoid gears.

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Microforming a Miniature Cup-Shaped Internal Gear Using a Cold Lateral Extrusion Process

Jiang

Chen

Erisov

et al. 2022

Metals

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This study determines the micro forming of copper alloy to form a cup-shaped internal gear. The as received material, copper alloy C1100, is annealed to obtain the initial grains and to determine the effect of the initial grain size on the mechanical properties, the deformability and the filling rate for a tooth cavity. The experimental results show that the specimen that is annealed at a temperature of 500 °C has an initial grain size of 25.5 µm, which increases ductility and allows a cup-shaped internal gear to be formed with the highest filling rate of 99.2%. Except for the as received material, the Vickers hardness, the extrusion force and the filling rate decrease as the initial grain size increases. The hardness is approximately homogeneous along the addendum and dedendum edges but gradually becomes less homogeneous along the edge of the tooth profile from the addendum to dedendum.

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Influences of control error and setting error on machining accuracy of internal gearing power honing

Cited by 3 publications

References 25 publications

Modeling and machining of integral impeller based on NURBS curve

Modeling and machining of integral impeller based on NURBS curve

Tooth surface error correction method of hypoid gear based on Morris-LM(Levenberg-Marquard) fusion algorithm

Microforming a Miniature Cup-Shaped Internal Gear Using a Cold Lateral Extrusion Process

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