Reconstruction of high-speed cam curve based on high-order differential interpolation and shape adjustment

Yu, Jun; Luo, Hong; Hu, Junzhi; Nguyen, Thai Vinh; Lu, Yuan-Ming

doi:10.1016/j.amc.2019.03.049

Cited by 12 publications

(13 citation statements)

References 20 publications

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“…(1) Statics analysis In order to verify the designed cam can meet various mechanical characteristics such as good ability to withstand pressures, sensitive actions and compact size, the force analysis [20][21][22] was carried out firstly as shown in Figure 5.…”

Section: Force Analysis Of Cam Mechanismmentioning

confidence: 99%

Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Zhou

Wang

Tang

2019

International Journal of Agricultural and Biological Engineering

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Since there are some problems in the previous cam of deep-fertilization liquid fertilizer applicator, such as poor precision and low-fertilization performance, a method of the contour line of a cam was proposed based on Matlab GUI development platform. Bernoulli' equation between the liquid fertilizer and the pressure valve of the fertilizer-spraying needle was founded. Moreover, the motion angles of a rise travel and return travel were corrected and the corresponding parameters of the contour line of the cam were obtained. Equations of cam moving from rise travel to return travel were derived according to the simple harmonic motion. In addition, 3D model of cam was established by applying the Pro/E software and the rationality of the cam design was verified. The static analysis of the cam was carried out under working conditions and the corresponding dynamics analysis was performed based on D'Alembert's principle. And then relationships between the binding force and the drag torque were obtained. A bench test indicates that when the pressure of a hydraulic pump is 0.5 MPa and the velocity of a output shaft is 50 r/min, the average consumption of the fertilizer is 19.7 mL for each measurement, which meets the corresponding agronomic requirement, i.e. 20 mL. When the rotation angle of the cam is 8.6° and the rise displacement of a plunger is 0.84 mm, the mouth of the fertilizer-spraying needle sprayed liquid fertilizer as soon as it got into the soil and stopped spraying as soon as it got out of the soil. The results show that the designed contour line of the cam meets the requirement, that is, the mouth of the fertilizer-spraying needle should spray liquid fertilizer as soon as it gets into the soil and stop spraying as soon as it gets out of the soil, which meets the agronomic requirements, that is, fertilizer should be sprayed deeply and precisely. And this study lays a theoretical foundation for designing the cam of intermittent type distributor and provides relevant parameters.

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Section: Force Analysis Of Cam Mechanismmentioning

confidence: 99%

Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Zhou

Wang

Tang

2019

International Journal of Agricultural and Biological Engineering

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“…reported that, Aluminium-Silicon particles were dispersed uniformly to design and optimize high-speed cam curves. Wear volume was found to be similar in all coatings of Aluminium-Silicon composites [5]. Dave and Kothari [6] have proved that Aluminium oriented Silicon Carbide Metal Matrix Composites have more strength, good thermal stability and more effective load carrying capability.…”

Section: Introductionmentioning

confidence: 98%

Comparison Study of Aluminum Camshafts alloyed with different ratio of Silicon

Srimath¹,

J²,

Yuvaraj³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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There has always been a drastic requirement of innovative designs in the automotive industry. To accomplish this, advanced materials and newer techniques have been constantly utilized. Designers in the automotive industry always look forward towards innovation in design of cam shafts or innovation in its course of action. Weight reduction in automobile parts, constantly plays a major part in all automobile parts. Innovation in design of cam shafts could be brought about by the use of computer aided engineering. Currently, use of composite materials is widespread in order to bring about the required change in the property of materials. Nowadays, Aluminum-Silicon alloy is rapidly used for its greater strength-to-weight ratio, increased wear resistance, less density and its property of less thermal expansion coefficient. In the present work, three types of Aluminum-Silicon cast alloy materials Al-SiC 9, Al-SiC 10 and Al-SiC 12 were modeled using Creo Elements software. It was analysed for structural deformation; viz; stress, deformation and strain using ANSYS static structural 14.5 software. From the results obtained, it was clearly evident that the Aluminum-Silicon cast alloy Al-SiC 12 material shows low stress and deformation values among all three types of Aluminum-Silicon cast alloy materials that was taken for taken in for analysis.

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“…Meanwhile, by manipulating the knot vector and the weight factor of the NURBS function, the peak values of the acceleration and jerk function can be minimized. To eliminate higher order discontinuity and extreme peak values of the cam motion program, Yu et al (2019) use a Bernstein-Lagrange basis function as an interpolation method to fulfill the multi-order derivatives. In addition, they also develop a shape adjustment method to lower the peak values of cam motion programs.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of trigonometric motion programs with lower motion characteristics

Hsu

2022

Mech. Sci.

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Abstract. Motion characteristics are dimensionless peak values of velocity, acceleration, jerk, and acceleration multiplied by velocity of a motion program. In general, these peak values of synthesized motion programs should be as low as possible. Some trigonometric motion programs are widely used because they have a good compromise of all motion characteristics. A property in common for trigonometric motion programs is that their acceleration functions can be expressed as a qualitative shape of a sinusoidal function. The interval of the sinusoidal function is divided into several zones having different linear slopes. The acceleration function can be easily shaped by specifying presented phase angle function to synthesize desired motion programs. To improve the kinematic quantities of trigonometric motion programs, this paper addresses an alternative phase angle function to obtain synthesized motion programs with simultaneous reduction in all the motion characteristics. The synthesis process and results are illustrated by examples.

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Reconstruction of high-speed cam curve based on high-order differential interpolation and shape adjustment

Cited by 12 publications

References 20 publications

Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Structure optimization of cam executive component and analysis of precisely applying deep-fertilization liquid fertilizer

Comparison Study of Aluminum Camshafts alloyed with different ratio of Silicon

Synthesis of trigonometric motion programs with lower motion characteristics

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