The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Li Lingqun - One of the best experts on this subject based on the ideXlab platform.
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water chestnet type permanent magnetic Gear Wheel and torque Gear
2007Co-Authors: Li LingqunAbstract:This invention relates to horseshoe permanent magnetic Gear and its torque drive system, which comprises non-magnetic Wheel base and horseshoe permanent magnetic Gear, wherein, the Wheel base is processed by non magnetic materials with same distance along fringe; the permanent Gear is processed by hard magnetic materials with one end for N and other end for S; horseshoe permanent different electrodes are near and fixed along fringe; fixing the above two Gears by parallel with work gap to form torque drive system.
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tapered permanent magnetic Gear Wheel and permanent magnetic Gear Wheel set
2007Co-Authors: Li LingqunAbstract:The invention relates to a cone permanent magnetic Gear, wherein the edge incline surface of cone Wheel made from non-iron magnetic material is distantly arranged with cuts; the distant different poles of permanent magnet are arranged inside the cuts, while their surface are smoothly transited to the cone Wheel; at this part, the magnetic force will be on the Wheel edge, to form hidden tooth of permanent magnetic field; the permanent magnetic Gears have opposite poles, to form permanent magnetic Gear group; when one cone permanent magnetic Gear rotates, another Gear will displace to generate the rotation torque whose adsorption between different teeth and repulsion between nearby teeth, transmit the torque without contact, and change the extending direction of rotation axle; and there is working space between two cone permanent magnetic Gears.
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magnetic Gear Wheel with amtipodal permanent magnetic structure and magnetic Gear Wheel set
2007Co-Authors: Li LingqunAbstract:The invention relates to an opposite-pole permanent magnetic Gear, wherein said Gear is formed by opposite-pole permanent magnetic Gear and non-iron magnetic Wheel; the edge of said Wheel is distantly arranged with cuts; the bottom of each cut is embedded with magnetic conductive bottom plate made from iron magnetic material; the upper and lower poles of cut are both embedded with one permanent magnet, while the heteropolar is connected to the magnetic conductive bottom plate; the permanent magnets inside two nearby cuts are different; the surfaces of two permanent magnets are smoothly transited to the edge of Wheel, to form opposite-pole permanent magnetic teeth; non-iron magnetic embed object is between two permanent magnets; said two Gears are parallel mounted to form magnetic Gear group; and the permanent magnetic teeth between said two Gears are different with working space. The invention uses adsorption force and repulsion force to transmit torque.
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magnetic Gear Wheel with collar groove permanent magnetic amplitude structure and magnetic Gear Wheel set
2007Co-Authors: Li LingqunAbstract:The invention relates to an annular-groove permanent-magnetic energy-collecting magnetic Gear, wherein said Gear is formed by block permanent magnet and iron magnetic Wheel; the edge of iron magnetic Wheel is annular groove outwards; the block permanent magnets are distantly fixed inside the annular groove with different poles to form permanent magnetic teeth; non-iron magnetic embed object is between each two block permanent magnets; non-iron magnetic embed object is between the block permanent magnet and annular groove; two said Gears are parallel mounted to form magnetic Gear group; the permanent magnetic teeth between two Gears are different with working space; when one Gear rotates, the permanent magnetic teeth of rotational Gear and the permanent magnetic teeth will generate adsorption force, and generate repulsion force with nearby permanent magnetic teeth, to transmit torque, and rotate another Gear.
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permanent magnetic amtipodal Gear Wheel
2007Co-Authors: Li LingqunAbstract:The invention relates to a permanent magnetic energy-collecting Gear, which is formed by permanent magnetic energy-collecting teeth and Wheel base, wherein said Wheel base is made from non-iron magnetic material; the edge of Wheel base is distantly arranged with cuts; the center of Wheel base has rotation axle mounting hole; the permanent magnetic energy-collecting teeth are groove bodies, and made from iron magnetic material; the center of groove is embedded with permanent magnet made from rigid magnetic material; the non-iron magnetic embed object is filled between permanent magnet and groove wall; the permanent magnetic energy-collecting teeth are mounted inside the cut of Wheel edge; the groove wall is flat with the Wheel base; the groove is toward to the outer side of Wheel edge; the permanent magnets on the circumference of Wheel edge are distantly arranged with N and S poles; two Gears are parallel mounted, while N pole of one Wheel is opposite to the S pole tooth of another Wheel; and two Gears have working space between them. With said structure, when one Wheel rotates, the permanent magnetic teeth, via the adsorption force and repulsion force between teeth, transmit torque, to rotate another Gear.
Sven Haglund - One of the best experts on this subject based on the ideXlab platform.
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the effects of blank geometry on Gear rolling for large Gear modules experiments and finite element simulations
IEEE Access, 2018Co-Authors: Alireza Khodaee, Arne Melander, Sven HaglundAbstract:Gear rolling is a forming process to produce Gear Wheels by plastic deformation. The advantage of the process is to eliminate the chip formation during production and also to improve the product properties since the non-metallic inclusions will be oriented along the cog surface and not perpendicular to it. The method has been developed in the past years for Gear production for automobile application with modules up to 3 mm. The successful application of Gear rolling in those cases raises the question regarding the feasibility of using cold rolling to manufacture Gears with larger modules which can be used for heavy vehicles. In this paper, a Gear Wheel with normal module of 4 mm has been studied in order to investigate if such large modules can be manufactured by Gear rolling. One of the issues in rolling of Gears is the design of the blank geometry in order to obtain the right Gear geometry after the rolling process. Blank shape modifications are necessary to control and to reduce the undesired shape deviations caused by the large plastic deformations in rolling. The blank modifications also help the process designer to control the forming force and torque. In this paper, the process has been modeled by finite element simulation and the influence of different blanks has been simulated. The validity of the FE model has been checked through several experiments. Both the numerical and experimental results revealed favorable blank modifications to apply for further developments of the Gear rolling process.
Marek Hawryluk - One of the best experts on this subject based on the ideXlab platform.
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the failure mechanisms of hot forging dies
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2016Co-Authors: Zbigniew Gronostajski, M Kaszuba, S Polak, M Zwierzchowski, A Niechajowicz, Marek HawrylukAbstract:Abstract This paper describes the phenomena taking place on the surface of the dies used for hot forging. Because of this paper’s limited space only changes in the tool surface layer during the forging of a Gear Wheel, as most representative, are presented. Similar changes were observed in the case of the other two investigated closed die forging processes, i.e. the forging of a cover and a yoke, respectively. The research was aided by FEM, which supplied a lot of information about the forging conditions. The most intensive wear of the tools occurs in the place of their longest contact with the material being forged, regardless of the number of produced forgings. The research has shown that the one of the most adversely factor affecting the investigated forging process is thermomechanical fatigue which results in fine cracks quickly developing into a network of cracks extending over the entire tool/forged material contact surface. Also the abrasive wear of the investigated die is high due to the intensive flow of the material in the presence of abrasive oxide particles and tools bits created by thermomechanical fatigue. An attempt to model the abrasive wear using the Archard model is presented.
Alireza Khodaee - One of the best experts on this subject based on the ideXlab platform.
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the effects of blank geometry on Gear rolling for large Gear modules experiments and finite element simulations
IEEE Access, 2018Co-Authors: Alireza Khodaee, Arne Melander, Sven HaglundAbstract:Gear rolling is a forming process to produce Gear Wheels by plastic deformation. The advantage of the process is to eliminate the chip formation during production and also to improve the product properties since the non-metallic inclusions will be oriented along the cog surface and not perpendicular to it. The method has been developed in the past years for Gear production for automobile application with modules up to 3 mm. The successful application of Gear rolling in those cases raises the question regarding the feasibility of using cold rolling to manufacture Gears with larger modules which can be used for heavy vehicles. In this paper, a Gear Wheel with normal module of 4 mm has been studied in order to investigate if such large modules can be manufactured by Gear rolling. One of the issues in rolling of Gears is the design of the blank geometry in order to obtain the right Gear geometry after the rolling process. Blank shape modifications are necessary to control and to reduce the undesired shape deviations caused by the large plastic deformations in rolling. The blank modifications also help the process designer to control the forming force and torque. In this paper, the process has been modeled by finite element simulation and the influence of different blanks has been simulated. The validity of the FE model has been checked through several experiments. Both the numerical and experimental results revealed favorable blank modifications to apply for further developments of the Gear rolling process.
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A Study of the Effects of Reversal Cycles in the Gear Rolling Process by Using Finite Element Simulations
2016Co-Authors: Alireza Khodaee, Arne MelAbstract:Abstract. The manufacturing of machine components with sustainable and innovative methods is an interesting topic for research. Gears are some components which have complexity in both design and production technology. Therefore applying innovative methods on Gear manufacturing can be of interest to industry. One of the most promising production methods for Gear Wheels is “Gear Rolling”. The Gear Wheel is formed during a certain rolling process from a cylindrical blank into the final designed shape. The process of Gear rolling with rotational Gears is progressing by running several rolling cycles with one, or two dies in contact with a work-piece. A specified rotational speed and radial feed speed is applied to the dies in order to form the required geometry on the blank. In this paper, the authors have simulated the process with the finite element code, DEFORM 3D. Especially the effects of reversal cycles on final Gear Wheel geometry have been evaluated from the simulations. Different settings for the rotation direction of the dies have been used and the effects are evaluated with specific quality criteria
Ir. Sartono Putro M - One of the best experts on this subject based on the ideXlab platform.
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Analisa Kerusakan Final Drive Planetary Gear Wheel Loader XGMA XG955H
2020Co-Authors: Malau, Jefri Prananda, Ir. Sartono Putro MAbstract:Final drive planetary Gear is one of the final driving components and as a connector for the power train component with Wheels or tracks. The function of final drive planetary Gear is to increase speed, reduce speed and change direction, neutral and direct drive. The purpose of this study is to find out how it works, find out the damage, find out the cause of the damage and know how to repair the final planetary Gear. The procedure for checking the final drive of the planetary Gear is by doing a performance test, and checking visually, then doing a disassembly to check the components, and then analyzing the results of the inspection to determine the damage that occurs in the final drive planetary Gear. The results of the analysis show that there are damaged in final drive planetary Gear components, namely pinion Gear and ring Gear. So the final drive planetary Gear cannot work optimally. To find out the cause of damage to the final drive planetary Gear, an analysis was carried out by using a fishbone diagram, a repair step carried out by replacing the damaged components and cleaning all components of the dirt
