Kinematic synthesis of cam-controlled planetary gear trains

Hsieh, Wen-Hsiang

doi:10.1016/j.mechmachtheory.2008.07.001

Cited by 21 publications

(14 citation statements)

References 14 publications

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“…So, the slider position is parameterized by input u. From equations (11) and (15), the equation of s was deduced, and it has four different solutions. After samples calculation, the final result is described as follow.…”

Section: Position Analysismentioning

confidence: 99%

“…Soong 8 presented a single degree-of-freedom mechanism with length-adjustable driving links for servo press. The authors in literatures [9][10][11] proposed a novel method for generating variable input speed by using cam-controlled planetary gear trains and a novel press system with six links for precision deep drawing. In recent years, manufacturers made some types of mechanical servo press, such as AIDA's servo press with the capacity of 300t, Komatsu's 200t servo press, and so on.…”

Section: Introductionmentioning

confidence: 99%

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Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Liu

Zhao

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper proposes a novel high capacity servo press system with two servo motor inputs and high ratio force amplifier mechanism for metal forming. First, the press structure was expressed. The force amplifier was made of seven-bar mechanism which possesses quick-return character and high ratio force amplifier. The symmetric structure balanced the force in horizontal direction, and dispersed the forces on two transmission routes. In theoretical study of the new structure, kinematic and dynamic analyses were obtained by examining the geometry of the structure. The performance of press was discussed by example demonstration. Finally, the kinematic experiments and metal forming experiments were carried out on the prototype machine by using grating scale system. The measured data match the theoretical calculation well, which validates the feasibility of this new press mechanism.

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Section: Position Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Liu

Zhao

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…2, after the main motor reach the rated rotating speed 1 ω , the assistant motor outage and the main motor 1 power on. The power of the main motor input the sun gear of the planetary differential mechanism and then is distributed by the two degrees of freedom planetary differential mechanism, in a power diversion state of single input and double output [7]. Part of the power is diverted to the branch of speed regulation that includes the planet gear and the ring gear of 2, the bevel gears, helical gears, and the branch of speed regulation of hydraulic pump.…”

Section: B Normal Operation Of the Transmission System (Operation Comentioning

confidence: 99%

A new hydrau-electro-mechanical transmission system with soft start-up/stepless speed regulation

Wang

Chen

et al. 2010

2010 International Conference on Mechanic Automation and Control Engineering

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To meet the requirement of start-up and speed regulation of high-power equipment, a new hydrau-electromechanical transmission system is presented. The system is with the functions of soft start, stepless speed regulation, soft halt, controllable down stroke by own weight, overload protection and explosion proof. The model of the transmission of power is established. Kinematic simulations of various operation conditions have been done with ADMAS software, and the results are encouraging. The physical machinery in reality has gained good economic benefits and social benefits as well.

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“…Other systems provide both of these benefits by controlling valve timing and lift. There are many ways in which this can be achieved, ranging from mechanical devices to hydraulic, pneumatic and camless systems [11][12][13][14]. Hydraulic system suffer from many problems including viscosity change of the hydraulic medium due to the temperature change, the liquid tends to act like a solid at high speed, and hydraulic systems must be carefully controlled, which require the use of powerful computers and very precise sensors.…”

Section: Introductionmentioning

confidence: 99%

Gear Drive Mechanism for Continuous Variable Valve Timing of IC Engines

Ghazal¹,

Dado²

2013

ENG

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Continuous variable valve actuating (CVVA) technology provides high potential in achieving high performance, low fuel consumption and pollutant reduction. To get full benefits from (CVVT) various types of mechanisms have been proposed and designed. Some of these mechanisms are in production and have shown significant benefits in improving engine performance. In this investigation a newly designed gear drive mechanism that controls the intake valve opening (IVO) and closing (IVC) angles is studied. The control scheme is based on maximizing the engine brake power (P) and specific fuel consumption (BSFC) at any engine speed by continuously varying the phase between the cam shaft angle and the crank shaft angle. A single-cylinder engine is simulated by the "LOTUS" software to find out the optimum phase angle for maximum power and minimum fuel consumption at a given engine speed. The mechanism is a planetary gear drive designed for precise and continuous control. This mechanism has a simple design and operation conditions which can change the phase angle without limitation.

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Kinematic synthesis of cam-controlled planetary gear trains

Cited by 21 publications

References 14 publications

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

A new hydrau-electro-mechanical transmission system with soft start-up/stepless speed regulation

Gear Drive Mechanism for Continuous Variable Valve Timing of IC Engines

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