The Experts below are selected from a list of 480 Experts worldwide ranked by ideXlab platform

Ke Yan - One of the best experts on this subject based on the ideXlab platform.

  • structure design and effects of Conical Gear roller on restraining rabbit ear defects during Gear rolling
    The International Journal of Advanced Manufacturing Technology, 2019
    Co-Authors: Guangchun Wang, Ke Yan
    Abstract:

    The Gear rolling process using a Conical Gear roller was developed recently and has been proved to be feasible for forming cylindrical Gears. However, the rabbit ear defect, which is normally present in the traditional rolling process, still exists. Therefore, an innovative structure for the Conical Gear roller is proposed to prevent rabbit ear defects. The size of the dedendum circle during the tooth forming stage is determined according to the height of the growing tooth on the blank at each moment, and the volume of the roller pressed into the blank is equivalent to that of the objective Gear’s tooth space. Both simulations and experiments are carried out to investigate the effects of the revised rollers on the rolling process. The results show that the formation of the tooth profiles can be effectively confined to the desired volume cavity, so that there is no extra space for the formation of rabbit ears. The tooth is fully filled, and the rabbit ear defects are obviously reduced. The experimental results agree well with the numerical simulation. The present study can help in improving the integrity and accuracy of the formed teeth for the Gear rolling process.

  • investigation on Gear rolling process using Conical Gear rollers and design method of the Conical Gear roller
    Journal of Materials Processing Technology, 2018
    Co-Authors: Guangchun Wang, Ke Yan
    Abstract:

    Abstract A type of Gear rolling process using Conical Gear rollers was firstly proposed in this study. Different with the cylindrical Gear rollers used in the traditional Gear rolling process, the roller which looks like a Conical Gear with different tooth profile along the axial direction was adopted in the rolling process. Besides, the radial feed applied on the roller in traditional rolling process was replaced by the axial feed applied on the blank. The proposed rolling process was divided into three stages, viz., tooth graduation, tooth forming and tooth finishing. According to the function of the roller in each stage, the structure of the Conical Gear roller was designed. Importantly, the detailed formulas to calculate the essential parameters of the Gear roller’s tooth in tooth forming stage were established, such as the diameter of addendum circle, the radius of addendum tip, the pressure angle, and the cone angle. Through the numerical simulation, the variation and forming mechanism of the tooth profile at different stages were analyzed. The results revealed that the proposed process achieves better uniform tooth graduation and refining of the tooth profile, which increase the forming accuracy of the tooth to some extent in rolling process. Moreover, the experimental device was developed and the feasibility of the Conical Gear rolling process was verified.

Guangchun Wang - One of the best experts on this subject based on the ideXlab platform.

  • structure design and effects of Conical Gear roller on restraining rabbit ear defects during Gear rolling
    The International Journal of Advanced Manufacturing Technology, 2019
    Co-Authors: Guangchun Wang, Ke Yan
    Abstract:

    The Gear rolling process using a Conical Gear roller was developed recently and has been proved to be feasible for forming cylindrical Gears. However, the rabbit ear defect, which is normally present in the traditional rolling process, still exists. Therefore, an innovative structure for the Conical Gear roller is proposed to prevent rabbit ear defects. The size of the dedendum circle during the tooth forming stage is determined according to the height of the growing tooth on the blank at each moment, and the volume of the roller pressed into the blank is equivalent to that of the objective Gear’s tooth space. Both simulations and experiments are carried out to investigate the effects of the revised rollers on the rolling process. The results show that the formation of the tooth profiles can be effectively confined to the desired volume cavity, so that there is no extra space for the formation of rabbit ears. The tooth is fully filled, and the rabbit ear defects are obviously reduced. The experimental results agree well with the numerical simulation. The present study can help in improving the integrity and accuracy of the formed teeth for the Gear rolling process.

  • investigation on Gear rolling process using Conical Gear rollers and design method of the Conical Gear roller
    Journal of Materials Processing Technology, 2018
    Co-Authors: Guangchun Wang, Ke Yan
    Abstract:

    Abstract A type of Gear rolling process using Conical Gear rollers was firstly proposed in this study. Different with the cylindrical Gear rollers used in the traditional Gear rolling process, the roller which looks like a Conical Gear with different tooth profile along the axial direction was adopted in the rolling process. Besides, the radial feed applied on the roller in traditional rolling process was replaced by the axial feed applied on the blank. The proposed rolling process was divided into three stages, viz., tooth graduation, tooth forming and tooth finishing. According to the function of the roller in each stage, the structure of the Conical Gear roller was designed. Importantly, the detailed formulas to calculate the essential parameters of the Gear roller’s tooth in tooth forming stage were established, such as the diameter of addendum circle, the radius of addendum tip, the pressure angle, and the cone angle. Through the numerical simulation, the variation and forming mechanism of the tooth profile at different stages were analyzed. The results revealed that the proposed process achieves better uniform tooth graduation and refining of the tooth profile, which increase the forming accuracy of the tooth to some extent in rolling process. Moreover, the experimental device was developed and the feasibility of the Conical Gear rolling process was verified.

Shyijeng Tsai - One of the best experts on this subject based on the ideXlab platform.

  • contact stress analysis of skew Conical involute Gear drives in approximate line contact
    Mechanism and Machine Theory, 2009
    Co-Authors: Szuhan Wu, Shyijeng Tsai
    Abstract:

    An approach for loaded tooth contact analysis of skew Conical Gear drives in approximate line contact is proposed. The meshing analysis is based on the characteristic of the line of action of involute Gearing. The contact problem is solved numerically giving due consideration to the influences of the tooth contact deformation and tooth bending deflection. The proposed approach is efficient and practical not only for cases of non-Hertzian contact, but also for Gear drives with end-relieved or modified flanks.

  • geometrical design of skew Conical involute Gear drives in approximate line contact
    Proceedings of the Institution of Mechanical Engineers Part C: Journal of Mechanical Engineering Science, 2009
    Co-Authors: S.h. Wu, Shyijeng Tsai
    Abstract:

    AbstractA novel design for skew Conical involute Gear drives in approximate line contact is proposed. Such a drive has a contact ellipse with a large major-to-minor-axis ratio, which allows it to overcome the weakness of Conical Gear drives for application in power transmission. This Gearing design approach is characterized by reduced edge contact sensitivity and increased surface durability. The edge contact sensitivity that can arise with this kind of Gear drive due to assembly or manufacturing errors is evaluated by analysing the value of the shift of the line of action caused by such errors. The surface durability is evaluated by calculating the Hertz stress. Some guidelines are developed based on the analysis of the influence of the Gearing parameters on the edge contact sensitivity and the surface durability made possible using this design approach for Conical Gear drives in the approximate line contact. The guidelines are summarized and, finally, a practical example is given to demonstrate the feas...

Zhezhu Xu - One of the best experts on this subject based on the ideXlab platform.

  • Study on modular modeling and performance evaluation of a Conical Gear for marine transmission system
    International Journal of Precision Engineering and Manufacturing, 2015
    Co-Authors: Zhezhu Xu, Dong-yang Li
    Abstract:

    Conical involute Gears, which are also known as beveloid Gears, are the involute Gears with cone-shape Gear body rather than cylindrical Gear body. Generally, Conical Gears are used in anti-backlash transmission systems and marine transmission systems. In marine transmission system, in order to obtain optimal propulsive force, 7–14 degree inclination angle was needed. In this paper, a 7 degree cone angle Conical Gear used in 375 kW class marine power transmission system was selected as research objective. And in order to establish the design theory of Conical Gear, a design system named Conical Gear modular modeling system was developed. The prototype Conical Gear was developed by the above design system to be used to simulate in a certain condition. The simulated and optimized prototype Conical Gear was manufactured which is as a specimen to complete a series of performance tests which contains Gear tooth profile test and contact rate test. As the results, the developed Conical Gear can well meet the performance requirements of the 375 kW class marine power transmission system.

  • study on the total design of a Conical involute Gear
    Journal of the Korean Society of Manufacturing Process Engineers, 2014
    Co-Authors: Jaihwa Kang, Zhezhu Xu
    Abstract:

    ABSTRACT Currently, there are many power transmission devices, including Gears, friction wheels, chains, and belts.Becausethe power transmission ofGears is most certainin these devices, Gears are widely used in different power transmission fields and environments. In accordance with the Gear shape, Gears can be classified as cylindrical Gears and Conical Gears. A cylindrical Gear, which provides a means of power transmission under parallel axis and skewed axis conditions, contains a spur Gear, a helical Gear and a worm Gear. A Conical Gear, which can be used on a skewed axis as well as parallel and crossed axes, includes a bevel Gear(e.g., straight bevel, spiral bevel, hypoid Gear) anda Conical involute Gear(or a beveloid Gear). In this paper, a Conical involute Gear which utilizes the fabrication method of other involute Gears such as spur and helical Gears using a CNC hobbing machine isdiscussed. Key Words : Conical Involute Gear(코니칼 인볼류우트 기어 ), Parallel Axis(평행축), Crossed Axis(교차축), Skewed Axis(엇 갈린축), Beveloid Gear(베벨로이드 기어)

Slouka Radim - One of the best experts on this subject based on the ideXlab platform.

  • Modern methods in bewel Gear production.
    Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009
    Co-Authors: Slouka Radim
    Abstract:

    This bachelor thesis describes the purpose, significance, division and the use of bewel Conical Gear wheels. This paper is especially concerned with the production technology of Conical Gear wheels. The methods of production mentioned are those generally known and also modern common technologies of the engineering industry

  • Modern methods in bewel Gear production.
    Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009
    Co-Authors: Slouka Radim
    Abstract:

    V bakalářské práci je popsán účel, význam, rozdělení a využití ozubených kuželových kol. Zejména se však zabývá technologií výroby ozubených kuželových kol. Zmiňované metody výroby jsou jak všeobecně známé tak i moderní běžně užívané technologie ve strojírenském průmyslu.This bachelor thesis describes the purpose, significance, division and the use of bewel Conical Gear wheels. This paper is especially concerned with the production technology of Conical Gear wheels. The methods of production mentioned are those generally known and also modern common technologies of the engineering industry.