SYNTHESIS OF MODIFIED STIM BILLETS BY SHS- COMPACTION (TT-3) FOR FRICTION PAIRS AND PARTS OF GEAR ROTOR WITH TROCHOID GEAR PROFILE

2018 ◽  
Author(s):  
V.E. LORYAN ◽  
◽  
E.A. GALIULIN ◽  
E.M. LISITSYNA ◽  
V.V. TSUGULIEV ◽  
...  
Keyword(s):  
Shs Compaction ◽  
Gear Profile

Modeling of surface roughness in a novel magnetorheological gear profile finishing process

2020 ◽  
pp. 095440622097826
Author(s):  
Ravi Datt Yadav ◽  
Anant Kumar Singh ◽  
Kunal Arora
Keyword(s):  
Surface Roughness ◽  
Gear Tooth ◽  
Surface Characteristics ◽  
Spur Gear ◽  
Tooth Profile ◽  
Tooth Surface ◽  
Magnetic Flux Density ◽  
Element Analysis ◽  
Finishing Process ◽  
Gear Profile

Fine finishing of spur gears reduces the vibrations and noise and upsurges the service life of two mating gears. A new magnetorheological gear profile finishing (MRGPF) process is utilized for the fine finishing of spur gear teeth profile surfaces. In the present study, the development of a theoretical mathematical model for the prediction of change in surface roughness during the MRGPF process is done. The present MRGPF is a controllable process with the magnitude of the magnetic field, therefore, the effect of magnetic flux density (MFD) on the gear tooth profile has been analyzed using an analytical approach. Theoretically calculated MFD is validated experimentally and with the finite element analysis. To understand the finishing process mechanism, the different forces acting on the gear surface has been investigated. For the validation of the present roughness model, three sets of finishing cycle experimentations have been performed on the spur gear profile by the MRGPF process. The surface roughness of the spur gear tooth surface after experimentation was measured using Mitutoyo SJ-400 surftest and is equated with the values of theoretically calculated surface roughness. The results show the close agreement which ranges from −7.69% to 2.85% for the same number of finishing cycles. To study the surface characteristics of the finished spur gear tooth profile surface, scanning electron microscopy is used. The present developed theoretical model for surface roughness during the MRGPF process predicts the finishing performance with cycle time, improvement in the surface quality, and functional application of the gears.

scholarly journals Double-arc harmonic gear profile design and meshing analysis for multi-section conjugation

2019 ◽  
Vol 11 (5) ◽  
pp. 168781401985065
Author(s):  
Guangsheng Chen ◽  
Huanhuan Li ◽  
Yang Liu
Keyword(s):  
Profile Design ◽  
Gear Profile

Theoretical and Experimental Study on Optimum Design of Gear Profile Modification Curves

2004 ◽  
Vol 471-472 ◽  
pp. 269-272
Author(s):  
Sheng Sheng Zhang ◽  
J.Z. Zheng ◽  
L. Cheng
Keyword(s):  
Experimental Study ◽  
Working Condition ◽  
Dynamic Performance ◽  
Gear Transmission ◽  
Important Method ◽  
Profile Modification ◽  
Gear Transmission System ◽  
System Vibration ◽  
Gear Profile ◽  
Specific Working

Gear profile modification is an important method for reducing system vibration and noise of a gear transmission. In this paper, three kinds of gear profile modification curves are studied, and relevant experiments are conducted. Some useful conclusions based on the theoretical analysis and experimental results have been obtained. Line, parabola and sinusoid modification curves are very useful in improving the dynamic performance of a gear transmission system by reducing system vibration and noise. In order to design the optimal tooth profile modification curve, the curve type must be decided firstly according to the specific working condition, and the curve parameters can be determined by means of optimum programming.

Numerical Investigation on Mini Internal Gear Forging Process

2016 ◽  
Vol 725 ◽  
pp. 560-565
Author(s):  
Chang Cheng Chen ◽  
Bo Heng Wu
Keyword(s):  
Transmission System ◽  
Consumer Electronics ◽  
Gear Transmission ◽  
The Finite Element Method ◽  
Hand Tools ◽  
Forging Process ◽  
Gear Transmission System ◽  
Die Set ◽  
Internal Gear ◽  
Gear Profile

Gear transmission system is closely related to the consumer electronics products, factory automation industry, science and technology toys, medical equipment, electric hand tools, home appliances and the low-speed high torque applications of automotive industry. In the past, the almost manufacturers produced the metal gear of transmission system mostly by machining method. The gear machining tools of relative processing are mired in difficulties when the gear was miniaturized. In terms of the way of micro forging to produce the gear transmission components, not only a high accuracy and production rate being much times of gear machining, which achieves a significant competitive advantage. This study aims to conduct a research for a mini internal gear forging formability. For this purpose, the finite element method was used to analyze the mini internal gear forging process based on a die set of involute gear profile model. From the simulation results, the characteristic of flowing field of material filled into the gear mold and the induced strain and stress distribution were observed. All findings can be significantly provided to develop the manufacturing process of mini gear forging.

Mathematicla modeling of thermal regimes of SHS compaction

1992 ◽  
Vol 63 (5) ◽  
pp. 1145-1150 ◽  
Author(s):  
L. S. Stel'makh ◽  
N. N. Zhilyaeva ◽  
A. M. Stolin
Keyword(s):  
Shs Compaction ◽  
Thermal Regimes
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