Dudley's Handbook of Practical Gear Design and Manufacture

Radzevich, Stephen P.

doi:10.1201/9781003126881

Cited by 15 publications

(11 citation statements)

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“…The calculations and design of the rack and pinion for the gripper were performed based on parameters like module, pitch, tooth profile, backlash, clearance, etc. [21]. NYLON Carbon 12 was chosen as the material for the prototype due to its favorable characteristics, such as lightweight, high strength, and rapid reproducibility of parts.…”

Section: Designing Rack and Pinionmentioning

confidence: 99%

Design and Implementation of a Compliant Gripper for Form Closure of Diverse Objects

Bingham,

Hessler,

Lama

et al. 2023

Applied Sciences

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This research presents a comprehensive study on the design and implementation of a flexible robotic gripper. Conventional grippers utilized in articulated robotic arms are often limited in their capabilities, being restricted to specific tasks or fixed object sizes. While soft grippers are a viable option, they have limitations in terms of grasping objects across a wide range and providing complete coverage. In this study, a novel compressible gripper is developed to enable safe and secure grasping of objects with varying sizes and shapes within a wide range. The gripper features a grasping area measuring 14 cm × 6 cm, allowing complete coverage of objects within this surface area. The current prototype with 7 cm of compressibility demonstrates the ability to grasp objects with a width difference of 7 cm with a maximum thickness of 15 cm, enabling manipulation of objects with varying widths, as defined by user-programmable parameters. The functionality of the gripper is based on the compressibility of the 3D-printed thermoplastic polyurethane (TPU) material. The flexible part of the gripper can be easily interchanged, offering versatility by accommodating different thicknesses without the need to replace the entire gripper mechanism. The gripper system operates using an open-loop control system, enhancing user-friendliness. Experimental evaluation of the gripper involved the creation and analysis of a CAD model followed by the fabrication of a prototype. The prototype exhibited exceptional performance in grasping objects of diverse sizes, shapes, and textures, demonstrating the effectiveness of the developed soft gripper system. The scalability of the soft gripper enables seamless integration with various types of articulated robotic arms, while the maximum weight limit for objects will be defined based on the robotic arms’ limitations. The research findings highlight the promising capabilities of the compressible gripper in enhancing the versatility and efficiency of robotic grasping systems, offering a significant contribution to the field of robotics.

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Section: Designing Rack and Pinionmentioning

confidence: 99%

Design and Implementation of a Compliant Gripper for Form Closure of Diverse Objects

Bingham,

Hessler,

Lama

et al. 2023

Applied Sciences

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“…Polymer gears play an increasingly important role in many new applications. In the past, these gears were typically used in low-demand applications, but with the development of new high-performance thermoplastic materials, they are being increasingly used in liability critical systems, such as control and braking systems [1]. With the ever-demanding applications of polymer gears, and taking into consideration the rate of development of new polymer materials and the number of commercially available materials, it is not an easy task to design a polymer gear for a specific application [2], especially taking into account the various number of parameters that need to be determined via time-consuming and expensive tests [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Although many types of research cover polymer gear problematics [3][4][5], there are many polymer materials, such as PVDF, that need to be characterized in order to establish reliable operational data for the polymer gear design process [1,[6][7][8]. PVDF material is classified as an engineering thermoplastic fluoropolymer with excellent thermal, mechanical, and chemical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Potential and Design Parameters of Polyvinylidene Fluoride in Gear Applications

Muratović,

Muminović,

Delić

et al. 2023

Polymers

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(1) Background: With the ever-increasing number of polymer materials and limited data on polymer gear calculations, designers are often required to perform extensive experimental testing in order to establish reliable operational data for specific gear applications. This research investigates the potential of a Polyvinyldene fluoride (PVDF) polymer material in gear applications, considering various loading conditions and different types of gear transmission configurations, including both self-mated mesh and steel/PVDF mesh. (2) Methods: PVDF gear samples were tested on a specially designed test rig that enables active torque control and temperature monitoring in order to obtain the necessary design parameters and failure modes. Each test for certain load conditions was repeated five times, and to fully investigate the potential of PVDF gear samples, comparative testing was performed for Polyoxymethylene (POM) gear. (3) Results: Tribological compatibility, tooth load capacity, and lifespan assessment, along with the types of failure, which, for some configurations, include several types of failures, such as wear and melting, were determined. Temperature monitoring data were used to estimate the coefficient of friction at the tooth contact of analyzed gear pairs, while optical methods were used to determine a wear coefficient. (4) Conclusions: The tribological compatibility of polymer gear pairs needs to be established in order to design a gear pair for a specific application. PVDF gear samples mated with steel gear showed similar lifespan properties compared to POM samples. Temperature monitoring and optical methods serve as a basis for the determination of the design parameters. PVDF is an appropriate material to use in gear applications, considering its comparable properties with POM. The particular significance of this research is reflected in the establishment of the design parameters of PVDF gear, as well as in the analysis of the potential of the PVDF material in gear applications, which gives exceptional significance to the current knowledge on polymer gears, considering that the PVDF material has not previously been analyzed in gear applications.

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“…Compared with the external gears, internal gear transmission has a lower sliding speed along the mated tooth profiles and a smaller size of the gear pair. 1 For the manufacturing method of internal meshing gears, Litvin and Fuents 2 put forward the theoretical model for hobbing of helical gears and deduced the meshing equations of conjugated tooth surfaces. Based on the disc grinding wheel, Litvin and Tsay 3 also designed the gear pair of internal meshing transmission and deduced the gears' general tooth profiles equations.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model and deviation analysis of machining cutters for internal gears with double contact points

Liang

Zhao

Chen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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An internal meshing gear pair that includes double contact points is proposed by the authors. For further performance evaluation and engineering application, special machining cutters for generating tooth surfaces are studied in this paper. General formulas and mathematical models of tooth surfaces of the hobbing cutter for the pinion are derived based on the actual tooth profile. Solid models of the three-dimensional hobbing cutter are established and calculation formulas of deviation conditions between the ideal tooth surface and the generated tooth surface are deduced. Deviation analysis considering the parameters of helical angle and pitch circle radius is discussed. Numerical simulations of the hobbing process are also carried out. While for the internal gear, tooth profile of skiving cutter is designed and forming formulas of tooth surfaces of the skiving cutter are derived. Solid models of the three-dimensional cutter are established, and the deviation calculation method of tooth surfaces is also provided. The research results lay the essential theoretical foundations and engineering analysis for practical applications of the new internal gears.

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Dudley's Handbook of Practical Gear Design and Manufacture

Cited by 15 publications

References 0 publications

Design and Implementation of a Compliant Gripper for Form Closure of Diverse Objects

Design and Implementation of a Compliant Gripper for Form Closure of Diverse Objects

Potential and Design Parameters of Polyvinylidene Fluoride in Gear Applications

Mathematical model and deviation analysis of machining cutters for internal gears with double contact points

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