scholarly journals Conical involute gear. 6th Report, Development of a new type of master gears of hard gear finisher.

1990 ◽  
Vol 56 (531) ◽  
pp. 3027-3031
Author(s):  
Ken-ichi MITOME
Keyword(s):  
Involute Gear ◽  
New Type

The Dynamics of Pin Gear Drive Drum Mixer

2012 ◽  
Vol 430-432 ◽  
pp. 387-390
Author(s):  
Shu Hua Wan ◽  
Ming Hua Bai
Keyword(s):  
Gear Tooth ◽  
Entire System ◽  
Gear Drive ◽  
Involute Gear ◽  
Drum Mixer ◽  
New Type

as the gear tooth wideth is very wide, involute gear drum mixer would have a great impaction and vibration to the entire system when the involute gear meshed in and out.we propose a new type of drum mixer which is pin gear drum mixer and we analysised the dynamics of pin gear drum mixer and involute gear drum mixer.

scholarly journals The Calculation of Meshing Efficiency of a New Type of Conical Involute Gear

2017 ◽  
Vol 63 (5) ◽  
pp. 320-330 ◽  
Author(s):  
Li Yu ◽  
Guangjian Wang ◽  
Shuaidong Zou
Keyword(s):  
Involute Gear ◽  
New Type

The Shaft Designs for a New Type Dispatching Winch

2014 ◽  
Vol 494-495 ◽  
pp. 533-537
Author(s):  
Hu Gao
Keyword(s):  
Gear Transmission ◽  
Two Stage ◽  
Transmission Pattern ◽  
Involute Gear ◽  
Original Plan ◽  
New Type

This project was to design the shafts for a new type dispatching winch, the author has improved much base on the original plan. By adopting involute gear transmission of two-stage NGW type, the transmission pattern has been changed from fixed shaft pattern to moving shaft pattern and the DOF of the mechanism has increased, which has achieved the composite motions between the components and has catered to the target of decelerating.

Meshing analysis of a gear with a ring-involute gear

2003 ◽  
Vol 217 (12) ◽  
pp. 1287-1299 ◽  
Author(s):  
S-C Yang
Keyword(s):  
Mathematical Model ◽  
Stress Analysis ◽  
Geometric Model ◽  
Gear Ratio ◽  
Geometric Modelling ◽  
Numerical Example ◽  
Involute Gear ◽  
The Family ◽  
New Type ◽  
Kinematic Errors

The surface of a gear with ring-involute teeth generated by a rack cutter with ring-involute teeth is a new type of gear. This paper describes a method developed from gear theory for deriving a pinion and a gear with ring-involute teeth. A gear with ring-involute teeth is regarded as an envelope to the family of rack cutter surfaces when the pinion and gear rotate for a cycle. Using a developed mathematical model, the investigation on the undercutting analysis of the proposed gear is studied. Here the kinematic errors are investigated according to the obtained geometric modelling of the designed gear meshing when assembly errors were present. Stress analysis for the proposed gear was performed. Finally, a numerical example is presented to demonstrate the geometric model of a gear with ring-involute teeth and a gear ratio of 3:2.

scholarly journals The Development of Flex-Gears for the Conduction of Electricity Across a Continuously Rotating Joint

1994 ◽  
Author(s):  
Jonathan M. Peritt ◽  
Lung-Wen Tsai ◽  
John M. Vranish
Keyword(s):  
Involute Gear ◽  
Alternative Method ◽  
New Type ◽  
Gear Technology

Abstract The transfer of electricity across a continuously rotating joint is especially important in robot joints and brush-type motors. In this paper, the shortfalls of present technologies, such as electric brushes, arc discussed. Flex-gears are presented as an alternative method of transferring electricity across a continuously rotating joint. A new type of gear, called a pitch-rolling-gear, is developed from involute gear technology for use as a flex-gear. Finally, the design of planetary flex-gear devices using pitch-rolling-gears is presented.

Study on Elastohydrodynamic Lubrication of Double Involute Gear Drive

2013 ◽  
Vol 753-755 ◽  
pp. 1723-1726
Author(s):  
Zhi Min Fan ◽  
Zhao Qiang Zhang
Keyword(s):  
Mathematical Model ◽  
Bending Strength ◽  
Elastohydrodynamic Lubrication ◽  
Low Noise ◽  
Small Vibration ◽  
Gear Drive ◽  
Involute Gear ◽  
New Type ◽  
Lubrication Characteristics ◽  
The Mathematical Model

Double involute gear drive was a new type of gear drive, which had high bending strength, small vibration and low noise. In this paper, the lubrication characteristics of the new type of gear had been studied, the model of elastohydrodynamic lubrication had been simplified and analyzed by geometric, and the mathematical model used for numerical analysis of elastohydrodynamic lubrication had been established.

The Microstructure of Shock-Synthesized Diamond

1967 ◽  
Vol 25 ◽  
pp. 324-325
Author(s):  
Lucien F. Trueb
Keyword(s):  
Single Crystals ◽  
Preferred Orientation ◽  
High Magnification ◽  
Texture Pattern ◽  
Shock Process ◽  
New Type ◽  
Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

New type electron gun with electrostatic and electromagnetic lenses

1978 ◽  
Vol 36 (1) ◽  
pp. 62-63
Author(s):  
T. Ichinokawa ◽  
H. Maeda
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Optimum Condition ◽  
Bias Voltage ◽  
Electron Gun ◽  
Charge Effect ◽  
Micro Fabrication ◽  
Maximum Brightness ◽  
New Type ◽  
The Ideal

I. IntroductionThermionic electron gun with the Wehnelt grid is popularly used in the electron microscopy and electron beam micro-fabrication. It is well known that this gun could get the ideal brightness caluculated from the Lengumier and Richardson equations under the optimum condition. However, the design and ajustment to the optimum condition is not so easy. The gun has following properties with respect to the Wehnelt bias; (1) The maximum brightness is got only in the optimum bias. (2) In the larger bias than the optimum, the brightness decreases with increasing the bias voltage on account of the space charge effect. (3) In the smaller bias than the optimum, the brightness decreases with bias voltage on account of spreading of the cross over spot due to the aberrations of the electrostatic immersion lens.In the present experiment, a new type electron gun with the electrostatic and electromagnetic lens is designed, and its properties are examined experimentally.

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

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