Development of Linkage-Cam Reducers and Series Design

2010 ◽  
Vol 20-23 ◽  
pp. 309-312
Author(s):  
Hong Ling Hou ◽  
Yong Qiang Zhao ◽  
Guo Hai Zhang ◽  
Bao Ming Wang
Keyword(s):  
Structural Design ◽  
3D Model ◽  
High Efficiency ◽  
Load Capacity ◽  
High Load ◽  
Operating Principle ◽  
Design Model ◽  
Series Design ◽  
New Type ◽  
High Load Capacity

It is introduced the new linkage-cam combination mechanism that has been designed and analyzed performance in the paper. Based on it and gear one teeth theory, the new type linkage-cam reducer has been successfully developed and have done structural design, model trial and industry testing ,the result is shown that the linkage-cam reducer have big drive ratio, enough high load capacity, high efficiency and so on, which provide a new type reducer for domestic reducer. Based on the operating principle and structure of linkage-cam reducers, series parameters are worked out and finally determined 9 types and 10 drive ratios. The specify type linkage-cam reducers are created 3D model，which makes series design slight simply, moreover providing fundamental basis for their application and popularization.

A New Cycloid Drive With High-Load Capacity and High Efficiency

2004 ◽  
Vol 126 (4) ◽  
pp. 683-686 ◽  
Author(s):  
Xin Li ◽  
Weidong He ◽  
Lixing Li ◽  
Linda C. Schmidt
Keyword(s):  
High Efficiency ◽  
Load Capacity ◽  
High Load ◽  
Design Issues ◽  
Output Unit ◽  
Ring Plate ◽  
High Load Capacity ◽  
Plate Type ◽  
Prototype Testing

A patented double crank ring-plate-type cycloid drive is introduced in this paper. The new drive requires no output unit and places no limit on the size of the tumbler bearing. The drive is able to transfer larger torque than a typical existing planetary cycloid drive. The newly designed double crank ring-plate cycloid drive preserves the standard advantages of planetary pin-cycloid drives. Its working principles, advantages and design issues are discussed. Promising results from prototype testing are presented.

An Air Layer Modeling Approach for Air and Air/Vacuum Bearings

1997 ◽  
Vol 119 (3) ◽  
pp. 388-392
Author(s):  
J. M. Pitarresi ◽  
K. A. Haller
Keyword(s):  
Load Capacity ◽  
Load Resistance ◽  
High Load ◽  
Air Bearing ◽  
Air Bearings ◽  
Bearing Surface ◽  
Know How ◽  
Modeling Approach ◽  
Vibrational Characteristics ◽  
High Load Capacity

Air layer supported bearing pads, or “air bearings” as they are commonly called, are popular because of their high load capacity and low in-plane coefficient of friction, making them well suited for supporting moving, high accuracy manufacturing stages. Air/vacuum bearings enhance these capabilities by giving the bearing pad load resistance capacity in both the upward and downward directions. Consequently, it is desirable to know how to model the air layer between the bearing pad and the bearing surface. In this paper, a simple finite element modeling approach is presented for investigating the vibrational characteristics of an air layer supported bearing. It was found that by modeling the air layer as a bed of uniform springs who’s stiffness is determined by load-displacement tests of the bearing, a reasonable representation of the response can be obtained. For a bearing supported by air without vacuum, the dynamic response was very similar to that of a freely supported bearing. The addition of vacuum to an air bearing was found to significantly lower its fundamental frequency which could lead to unwanted resonance problems.

scholarly journals Multilayered-Sheet Hot Stamping and Application in Electric-Power-Fitting Products

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 215 ◽  
Author(s):  
Bin Zhu ◽  
Zhoujie Zhu ◽  
Yongmin Jin ◽  
Kai Wang ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Load Capacity ◽  
Hot Stamping ◽  
High Strength ◽  
Optimal Number ◽  
Electrical Connection ◽  
Number Of Layers ◽  
Stamping Process ◽  
New Type ◽  
High Load Capacity

Traditional electric transmission line fittings, which are always manufactured from thick metal slabs, possess the disadvantage of heavy weight. In this study, a new type of electrical-connection-fitting, clevis-clevis component made of high-strength steel is developed to reduce weight, and a new hot-stamping process for multilayered sheets is proposed to manufacture the component efficiently. First, the structure of the new clevis-clevis component is designed, and the corresponding tool is developed. Second, a flat-tool heat transfer experiment is conducted. The influence of the number of layers and contact pressure on the cooling rate of each sheet is investigated. The optimizing number of layers and contact pressure for the multilayered-sheet, hot-stamping process are obtained. The optimal number of layers is two, and the optimal contact pressure is more than 20 MPa. The final microstructure of each sheet is fully martensitic, and the strength is about 1500 MPa. Finally, U-shaped, double-layer-sheet hot stamping is implemented to produce a typical electrical-connection-fitting, clevis-clevis component. The bearing capacity of a four-layered clevis-clevis is tested through numerical and experimental methods. The new connection-fitting clevis-clevis component exhibits a high load capacity of 280 kN. Compared with that of the traditional component, the weight of the new component is reduced by 60%.

A one-stage, high-load capacity separation actuator using anti-friction rollers and redundant shape memory alloy wires

2015 ◽  
Vol 86 (12) ◽  
pp. 125005 ◽  
Author(s):  
Yan Xiaojun ◽  
Huang Dawei ◽  
Zhang Xiaoyong ◽  
Liu Ying ◽  
Yang Qiaolong
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Load Capacity ◽  
High Load ◽  
One Stage ◽  
High Load Capacity

scholarly journals Analysis of the geometry and contact density of globoid gearing

2020 ◽  
Vol 329 ◽  
pp. 03008
Author(s):  
Aleksandr Vyatkin
Keyword(s):  
Numerical Methods ◽  
Load Capacity ◽  
High Load ◽  
Design Stage ◽  
Energy Losses ◽  
Technological Parameters ◽  
Contact Density ◽  
Small Energy ◽  
Worm Gears ◽  
High Load Capacity

Globoid worm gears have been widely applied in a range of technological branches in which other types of worm gears are less effective. The main functional indicators which facilitated their popularity include high load capacity and durability, low vibroactivity and small energy losses. As the experience of application and the results of the study of globoid worm gears showed, the level of operational properties of globoid gears is higher than that of the others only if the gearing and technological parameters of their manufacturing are optimally chosen during the design stage. This paper describes a method for estimating the gearing parameters of a globoid gear with an account of the geometry of the elements (the geometry of the teeth of the wheel and the worm thread), namely the calculation of the gap fields in the globoid gearing by means of numerical methods.

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