Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system

Al-Hamood, Amjad; Jamalia, Hazim; Imran, Amer; Abdullah, Oday I.; Senatore, Adolfo; Kaleli̇, Hakan

doi:10.1016/j.crme.2019.10.005

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…The relationship creates a straight line that can be described using Equation (6). The derivative of the displacement in Equation ( 6) can be taken, yielding the velocity in Equation (7). The derivative of the velocity in Equation ( 7) can be taken to yield the acceleration in Equation (8).…”

Section: Linear Motion (Up Only)mentioning

confidence: 99%

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Designing a Laboratory Cam Profile Measuring Machine to Validate Follower Displacements

Bednarz,

Abad,

Patel

et al. 2024

Hardware

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This study presents the design, build, and evaluation of a laboratory cam profile measuring machine tailored to demonstrate the mechanical principles and applications of various cam shapes. Utilizing a diverse set of cam profiles, the machine effectively converts rotational motion into measurable linear motion, achieving a range of motion profiles, including rising, declining, steady, and instantaneous actions. Key components of the machine include an angle gauge for precise rotational measurements and a linear dial indicator for accurately gauging the cam-induced displacement. This setup facilitates the measuring of displacement, and computation of velocity and acceleration for each cam shape, offering a dynamic visual and numerical aid for engineering and design.

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Section: Linear Motion (Up Only)mentioning

confidence: 99%

“…Traditional CVTs will have belt-slip when high torque situations are encountered. The system presented by Al-Hamood provides a theoretical solution to a primary problem with current CVTs [7].…”

Section: Introductionmentioning

confidence: 99%

Designing a Laboratory Cam Profile Measuring Machine to Validate Follower Displacements

Bednarz,

Abad,

Patel

et al. 2024

Hardware

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“…Transmissions equipped with planetary pawls, planetary gears or switch plates are discussed in [15,16]. Additionally, there are designs that mechanism with a spatial cam with a planetary gear [17,18] or combine a cam-follower with a grooved wheel-follower [19,20]. The pulse CVT category also includes the transmission described in [21], which transmits drive by controlling the engagement time of compact non-slip clutches (e.g., dog clutches).…”

Section: Introductionmentioning

confidence: 99%

Performance of a Cam-Type Pulse Continuously Variable Transmission

Pabiszczak

2024

Adv. Sci. Technol. Res. J.

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The aim of this paper is to assess the performance parameters of the cam-type pulse continuously variable transmission, which is a first attempt to investigate this issue in the presented manner. The transmission under investigation comprises two cams in cooperation with two units, each consisting of rollers connected to swing rods mounted on overrunning clutches. To accomplish this, a test stand was built and a detailed testing program was developed takes into consideration the influence of gear ratio, rotational speed, and load on the uniformity of motion and efficiency. Analysis of the obtained results leads to the conclusion that the tested transmission is particularly sensitive to changes in operating conditions, and its overall performance deteriorates as the reduction ratio increases. The best results were achieved with a load below the nominal one, at low rotational speeds and a low speed reduction. The transmission's structure design and operational principle result in significant power losses, as evidenced by an efficiency rating of less than 60%.

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“…use input to process, then output These elements have a lot in common with dynamic considerations. A quote from Abbas Olyaei (2019 [13]) provided a theoretical analysis of an endlessly variable cam-based transmission system (A.Al-Hamood , et al 2018 [14]) and (A.Al-Hamood , et al 2020 [15]) (IVT). In this research, we provide a different approach to analyzing this IVT system with the use of Matlab software.…”

Section: Introductionmentioning

confidence: 99%

Cam based Infinitely Variable Transmission Theoretic Modelling

Faleh

Al-Hamood

Majeed

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Infinitely variable transmission (IVT) is a system which delivers the ratio between two turning elements to a continuous (non-discrete) variation (including zero). This article uses Solidworks software to build and simulate a cam-based IVT system. There are two identical units in the system under examination. Each unit comprises a cam with an oscillating slot connection that swings on a hinge and can be vertically shifted by changing the transmission rate. This modifier can be a power screw or a hydraulic ram. In addition, a grooved wheel and followers or an actuator are included in the system units. The raised wheels swing rotating movement, such that they are coupled by a single-way clutch to the output shaft (ratchet) to move the output shaft one way. During the performance research, cam shapes are considered and examined inside the mechanism. a mixture of the unchanging speed and 1-5 polynomial shapes, used for the current investigation and tailored for The results produced from the simulation generally reveal the theoretical results expected in accordance with the layout of the current IVT system. For all parts in these units, the findings imply a uniform velocity while each unit is powered. In this investigation, nevertheless, the ratchets used cause remarkable fluctuations in the angular speed of the output axis. Further research is therefore urgently needed in the choice and investigation of more efficient ratchets.

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Modeling and theoretical analysis of a novel ratcheting-type cam-based infinitely variable transmission system

Cited by 6 publications

References 15 publications

Designing a Laboratory Cam Profile Measuring Machine to Validate Follower Displacements

Designing a Laboratory Cam Profile Measuring Machine to Validate Follower Displacements

Performance of a Cam-Type Pulse Continuously Variable Transmission

Cam based Infinitely Variable Transmission Theoretic Modelling

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