Wheel Technology Research Articles

Vibration-reducing modelling of a mecanum wheel based on equivalent stiffness and strength analysis

The mecanum wheel-chair offers unparalleled manoeuverability due to its ability to move in any direction by independently rotating its wheels. However, this innovation, characterized by hub and rollers, brings along a set of challenges, including vertical vibrations induced by successive roller-ground contacts. This manuscript presents a comprehensive investigation into the dynamic features and vertical vibration characteristics of mecanum wheels. Our study focuses on understanding the impact of roller curvature on vertical vibrations. To achieve this, authors employed top-to-top and quadratic mean values of accelerations and displacements. Additionally, authors described the results of a vertical vibration simulation conducted in SolidWorks. A key element of our research involves the implementation of a spring mechanism within the mecanum wheel's centre to dampen vibrations. Through systematic experimentation and analysis, authors determined the optimal geometric arrangement for minimizing vertical vibrations. Our findings reveal a superior design approach for reducing wheel vibrations and enhancing manoeuverability. By addressing this important issue, authors contribute to the advancement of mecanum wheel technology, making it more efficient and practical for a wide range of applications. Specifically, our results demonstrate an impressive 99.98% reduction in vertical vibrations, marking a significant improvement in the mecanum wheel-chair's efficiency and enhancement in wheel efficiency.

Dymag and Hankuk Carbon join forces with Hyundai on lightweight carbon hybrid wheels

Dymag, producer of lightweight wheels for the automotive industry, and its strategic partner, composites material specialists Hankuk Carbon, are working with Hyundai on the development of new carbon hybrid wheel technology for the car maker's N Performance products.

From Hand to Machine: How Indian Cloth Quality Shaped British Cotton Spinning Technology.

A true history of industrial technology and innovation must factor in the history of labor and skill required to make a specific product. Mainstream perspectives on industrialization in Britain's cotton industry view technological change in spinning as motivated by productivity gains, facilitated by the fortuitous availability of high-quality, long-staple cotton. However, material evidence shows British cotton textiles advanced to match Indian cloth quality, suggesting that spinning machinery also evolved apace to achieve product quality. This article demonstrates that alongside the cotton staple, the spinner's skill and dexterity determined final cloth quality. The three main spinning machines were technically path dependent, with mechanized spinning of fine cotton based on the original Indian jersey wheel technology. Technological innovations mainly focused on improving product quality, with mechanization a means to bridge the British skill gap in cotton spinning. Histories of labor and skill are therefore at the heart of innovation.

듀얼 스위블 휠 기반의 전 방향 이동 로봇의 개발 및 그 주행성능 시뮬레이션

Omnidirectional driving wheel mechanisms include omni-wheels, mecanum wheels, swivel wheels, and ball wheels. However, this driving wheel technology encounters challenges such as slip, load distribution, floor surface compatibility, and contact friction. In this paper, a dual swivel wheel-based mobile robot design for omnidirectional motion is presented. By using the double-wheel structure, the torque required for each module can be divided into two parts. In addition, the low contact friction with the floor surface enables easy changes in the direction during rotation. To design the mechanics of the dual swivel wheel-based mobile robot and verify its driving performance, a robotics simulation environment was constructed using the Unity engine and ROS2. Through simulations, omnidirectional driving performance, steering precision, minimum radius of rotation, and positional precision were studied.

Laser precision profiling of small-angle bevel-edge contour grinding wheels

A deflectable pulsed fibre nanosecond laser was employed in systematically studying the profiling small-angle bevel-edge contour diamond grinding wheels. There is taper error in laser profiling grinding wheel technology as with other laser removal technologies and little research on the formation factors and suppression measures. In this paper, the mathematical model of the laser energy variation on bevel contour was first proposed, which theoretically explained the reasons for the angle error of laser profiling the bevel-edge contour. The ways to boost the contour accuracy and enhance surface quality were investigated. The results demonstrated that the smaller the bevel profile angle, the more scattered the focused laser irradiated on the grinding wheel surface, and the higher the reflectivity of the laser on the profiled surface. The above factors caused an extreme decrease in the laser power density irradiated on the grinding wheel, which led to taper error. It was found that the surface quality deteriorated, the obvious ablation marks appeared on the profiled surface as the overlap rate decreased, and adjusting the laser deflection angle could effectively eliminate the angle error of the bevel contour and improve the profiling accuracy. After laser profiling, the purpose of precision profiling the bevel contour of 11° could be achieved by setting the laser deflection angle of about 1°, and the PV value of the bevel contour reached 5.812μm. The mathematical model of laser profiling bevel contour established in this work can also be applied to other laser processing courses.

Revolutions: the introduction of the potter’s wheel to southern Britain, and its implications for understanding Late Iron Age societies

ABSTRACT The introduction of the potter’s wheel was one of the fundamental technological changes in the later Iron Age of southern Britain. Despite this, wheel technology remains an under-analysed aspect of Iron Age material culture, with discussion of technology remaining constrained by a simplistic opposition between ‘wheelmade’ and ‘handmade’ wares. New data are presented in this paper which substantially improve our understanding of how the potter’s wheel was used during the first decades of its employment by British potters. Using an approach informed by material agency and practice theory, focus is placed on the dynamic use of wheel technology as a way of exploring the experiences and decision-making processes of craftspeople living in this turbulent period. Based on these new data, it is argued that previous studies have over-emphasised the role of economic factors such as productive efficiency in causing technological change. The results instead support a use-led hypothesis for the adoption of wheel technology as well as an economic mentality which was not profit-driven. The agency of wheel technology is also explored and is identified as playing a potential grassroots role in Late Iron Age social change, as well as a formative role in the emergent identities of semi-professional craftspeople.

Инновационные технологии машиностроения, обеспечивающие повышение долговечности железнодорожных колес и рельсов

In the paper it is shown that railway wheels and rails life depends considerably upon wear-resistance of their tread working surfaces. There is presented an innovation technology of a railway wheel tread electromechanical processing allowing the increase of its life. The innovation technology of railway wheel working tread electromechanical processing allowing its life increase is shown. The innovation technology for rail working tread allowing its life increase is given.

Rolling centrifuge repulsion Force Spacecraft

A Rolling Centrifugal Repulsion force UFO Introduction: Any object that rolls along a straight line will generate a centrifugal repulsive force that is away from the body being rolled, it is rolling centrifugal repulsive force. Utilizing this phenomenon, rolling the round ring along the edge of the UFO's disk will produce a constant lift, and then use the electric wheel technology to set the ballast rock at the bottom of the UFO to change the position of the ballast stone at the bottom of the chamber. In order to change the position of the center of gravity of the UFO, the purpose of driving the UFO can be achieved.

Tekst, teknologi og trope. Det tibetanske bedehjul

Trine Brox: Text, technology, trope
 Tibetan Buddhist practices include the engagement with Buddhist script in the form of tightly packed scrolls of paper that are placed in drums and spun in order to accumulate merit. On the scrolls are written or printed mantras (sacred or magic sounds in the form of a series of syllables) or dhāraṇīs (formula condensing lengthy texts or teachings). The receptacles containing such scrolls are the iconic prayer wheels, whose materiality enables and restricts particular modes of textual engagement. What kind of texts are these scrolls? How does one read texts that come in the form of tightly packed scrolls? They cannot be read by immersing oneself in the content of the text because its materiality restricts access to it. Instead it fits perfectly with the prayer wheel technology that allows circumambulatory recitation, the article argues.
 The prayer wheel is not only an important object in recitation practices for Tibetan Buddhists, but has also become a key marker of Tibetan identity. Yet its history, culture and practice have received very little scholarly attention. This article attempts to eradicate this blind spot. It endeavors to show how the prayer wheel has earned itself its iconic status by explaining how the prayer wheel is a receptacle of sacred script and a device for reciting sacred script. The article zooms in on (i) the cult of the book in the Tibetan culture sphere, (ii) the technology of prayer wheels; and (iii) the recurring tropes of the wheel, circumambulation, and rotation in Buddhism, as well as the merit connected with them. In view of this particular constellation of book cult, technology, and dominant trope, it makes sense that, first of all, Tibetan Buddhists have adopted and further developed a technology that optimizes interaction with sacred script; secondly, that rotation is considered an adequate way to interact with Buddha’s doctrine; and third, that this device has become an icon for the Tibetan civilization. It is especially the sacred text within the wheel, the article argues, that endows the prayer wheel with high status in a hierarchy of Buddhist material objects. Finally, this raises questions about modernized prayer wheels – when technological progress has enabled further development of devices that can contain and spin Buddhist script such as optic discs, prayer wheel apps, and automated praying machines. How does their materiality impact textual engagement?
 The article is based upon data produced through (i) ethnographic inquiry, such as interacting with the stakeholders who deal with Buddhist material culture for different reasons, e.g. producers, marketers, ritual specialists, practitioners, and consumers, and (ii) textual sources that includes Tibetan and English-language scholarship, catalogues, user’s guides, and marketing material. This multi-modal method has produced knowledge about the prayer wheel as practice, i.e. what we can call popular religion, and as theory, i.e. according to how the prayer wheel is idealized in the writings of Buddhist masters.

Rolling Centrifuge Repulsion Force Spacecraft

A Rolling Centrifugal Repulsion force UFO Introduction: Any object that rolls along a straight line will generate a centrifugal repulsive force that is away from the body being rolled, it is rolling centrifugal repulsive force. Utilizing this phenomenon, rolling the round ring along the edge of the UFO's disk will produce a constant lift, And then use the electric wheel technology to set the ballast rock at the bottom of the UFO to change the position of the ballast stone at the bottom of the chamber. In order to change the position of the center of gravity of the UFO, the purpose of driving the UFO can be achieved. This is a basic scientific research and applied science both the paper, this paper mainly in the previous article subvert the traditional scientific theory of Cao universal repulsion based on the universal gravitation The further research on the rolling condition and the research on the rolling condition of the ring under gravitation are carried out. The principle of the precession in the spin and the reason of precession are deeply studied. At the same time, on the basis of this principle, from the perspective of a chief designer, designed a man-riding centrifugal universal repulsion flying bike, a powered centrifugal universal repulsion flying car and the use of this flying car as a tool for flight Vehicle manned flying on the moon sampling double aircraft, for which the demand for high speed bearing research and design, in order to be used for aircraft supporting high speed bearing design and manufacturing. Here is the simplest language to explain the most complex issues. This is also a kind of learning。

Plant layout design and assessment consideration of cellular manufacturing system via G.A

Cellular manufacturing is a wide world and many study and researches discussed are concerning with it because of the large demand in market and wheel technology push the scientist to find tools that can stand with this fast change in demand according specific market , so that they invent the best way to deal with optimization purpose. In this research the dealing with cellular optimization in such a way that can be manageable by AI and using type of AI that named natural optimization . The applying of genetic algorithms was carried out on factory of electrical motor also all data was taken from the factory which is depend on the position and sequence of operations took place in the factory . The theory in this field were also taking in consideration and the applications was carried out . the research deals with problem in two way theoretically that can take in consideration the positions of machines inside the plant and its equations that covers with some constraints and the secondly the routing of part during product life cycle and execute results and applying it on factory configuration . There are multi solutions (results ) in the research for the problem that can achieve the flexibility , simplicity and also desired distance

Performance Evaluation of Solid Desiccant Wheel Regenerated by Waste Heat or Renewable Energy

Abstract To remove moisture, solid desiccant wheel technology presents an energy-efficient alternative to traditional systems especially when solar energy and waste heat come into play. Solid desiccant wheels can be coupled with other systems to provide desired air quality. In order to solve the problem of high energy consumption for regeneration of desiccant wheels, systems involving desiccant wheels use solar thermal energy or waste heat to regenerate desiccant material so dehumidification process is done by this technology while required energy to dehumidify air is provided by waste heat or renewable energy. The main component in these systems is desiccant wheel which should operate efficiently. In this study, performance of solid desiccant wheel is evaluated and affecting factors consisting of air humidity ratio, regeneration process and air process temperatures, mass flow rates, and wheel revolution are investigated. Software provided by Novel Aire Company is used to calculate outlet air conditions. Using the software, the performance of a rotary dehumidifier is studied based on effectiveness parameters including moisture removal capacity (MRC), sensible coefficient of performance (COPSen), latent coefficient of performance (COPLat) and total coefficient of performance (COP Total). In addition, affecting factors change as described: inlet air temperature between 15 °C to 40 °C, regeneration temperature between 65 °C to 110 °C, humidity ratio between 10 to 20 g/kg, air flow rates between 0.72 Kg/s to 1.28 m/s, and rotational speed of wheel between 10 to 40 RPH.

Scale-down model screening study of key process parameters for anchorage-dependent stem cells using vertical-wheel bioreactors

Current 3D manufacturing platforms need to be improved in order to efficiently advance cellular therapy processes from laboratories to clinical trials to commercialization. An ideal 3D cell culture platform allows for a scale-down, small volume model to be representative of the culture environments in larger volumes., With this platform, cell therapy processes can be developed efficiently and economically at the laboratory scale, and then easily transferred to manufacturing. A single-use bioreactor system with novel Vertical-Wheel technology has recently been introduced as an ideal platform for cell therapy manufacturing. These bioreactors provide homogeneous liquid mixing and microcarrier suspension with low shear across a range of working volumes, from 100mL to 500L. In particular, the “Mini” bioreactors, with working volumes of 100 and 500mL, are ideal for small-scale laboratory studies where they can provide efficient and cost-effective screening of key process parameters. The agitation rate of a Mini bioreactor is independently controlled, but the entire unit is designed to operate inside a CO2 incubator that will regulate temperature, pH, and dissolved oxygen levels. Due to the consistent, predictable mixing performance of Vertical Wheel technology, processes developed in small scale Mini bioreactors can confidently be scaled up to large-scale manufacturing. In this poster, data from a screening study of key process parameters developed in Mini bioreactors for human bone marrow-derived mesenchymal stem cells (hBM-MSC) will be presented, as well as mixing performance correlations between small-scale and larger volume Vertical-Wheel bioreactors.

1F21 Early and present technology of railroad vehicle axle and wheel(Vehicles-Rail/Wheel)

1F21 Early and present technology of railroad vehicle axle and wheel(Vehicles-Rail/Wheel)

車輪とレールの技術史とわが国の現状 : 車輪とレールの形状(技術史,<メカライフ特集>鉄道190周年)

車輪とレールの技術史とわが国の現状 : 車輪とレールの形状(技術史,<メカライフ特集>鉄道190周年)

EDM Dressing Diamond Grinding Wheel and Recent Advances

There are many methods of diamond wheel dressing,broadly divided into mechanical dressing and special processing trimmed two categories.This article describes several different EDM dressing diamond grinding wheel technology and divided into two categories namely:different medium EDM dressing diamond grinding wheel and EDM assisted dressing diamond grinding wheel technology. Summarize recent wheel dressing technology research advances at home and abroad.Elaborated EDM dressing key issues to be addressed, and further research.

Research on Intelligent Steering Wheel Technology Based on Multi Sensor

At present, the automobile industry is developing rapidly, the private car is widely popularized, and the hidden dangers of traffic safety exist. The phenomenon of drunk driving and fatigue driving becomes more and more serious, and the improvement for steering wheel could effectively prevent traffic accidents. This paper introduces and analyzes the intelligence of steering wheel in three major aspects, they respectively include intelligent grip detection, which tests if a driver is of fatigue driving; hart rate detection, which tests if a driver is in normal driving condition; alcohol detection, which tests if a driver drinks too much, and it predicts the possibility of accident from the drivers state, and timely gives out signal to warn the driver.

3D-printed Pelton Turbine: How to Produce Effective Technology Linked with Global Knowledge

Small scale hydropower energy goes a long way to fire up community development. Until 1920-30s, Japanese hydropower techniques had been established on a global level in each local area. However, after the second World War, the main energy resource was changed. This has resulted in a local decline in micro-hydro technical expertise and fewer waterwheel makers throughout Japan. At the present, we are going to work to re-make small scale hydropower technologies and markets. In this paper, we discuss and propose improvements to the “Japanese” small scale hydropower technology and production techniques, especially Pelton type wheel.The Pelton wheel technology of Nepal was freely available in the public domain so we decided to design a system based on that. We decided to designed by 3D-CAD and to make our Pelton buckets using a 3D printer. We compared the power generation capacity of our waterwheel with one purchased from New Zealand to investigate its effectiveness and efficiency. In our results of the experiment, the power generation curves for each turbine are approximately equal. The power increases continuously with increases in the flow rate. The maximum power generated by each turbine is approximately the same. This shows that it is possible to design a Pelton bucket that has a power generation efficiency comparable to a purchased bucket.The next step, the Pelton turbine designed in this study was chosen to be included in the Itoshima micro-hydro power generation system. So we scaled up and redesigned the Pelton turbine. In addition, we conducted a survey involving waterwheel makers regarding connecting to cost reduction.Using a 3D printer has the following advantages: 1.) Design deficiencies and failed designs can be identified at an early stage. 2.) Different forms of waterwheel can be made at low cost and in a short amount of time, which can then be used to run water experiments.

Laboratory investigation of a fluid-dynamic actuator designed for CubeSats

In general, the attitude control systems (ACS) for precise spacecraft operations rely on reaction wheel technology for angular momentum exchange. In this paper, an alternative ACS concept using fluid rings for this task is presented. This novel actuator—based on Lorentz body force—uses a direct-current conduction pump to accelerate liquid metal within a circular channel structure. As working fluid for the fluid-dynamic actuator (FDA) serves the eutectic alloy Galinstan. Along with a microcontroller that runs the FDA, a MEMS gyroscope is implemented on the device for closed loop operation. Several models of FDAs for small satellites were tested successfully for various attitude control maneuvers on an air bearing platform. Thus advantageous performance has been achieved in terms of torque and power consumption in comparison to similarly dimensioned reaction wheels. Further considerable advantages are wear-free operations and higher reliability as well as expected passive damping properties. A next generation FDA prototype for nano-satellites is currently in development for in-orbit testing.

Soft-Consolidation Abrasives Pneumatic Wheel Technology Oriented to Finishing of High-Hardness Free-Form Surface

In order to improve the efficiency of high-hardness laser strengthening mold polishing, especially to the free-form surface, a new precision finishing method based on soft-consolidation abrasives pneumatic wheel is brought forward. The pneumatic wheel is constituded by flexible rubber maxtrix, combined with the robbet control. The abrasives group is bond to the rubber matrix by the polymer binder. In the way, compared with those free abrasives used in other polishing method, the soft-consolidation abrasives can get more stable surpport from nearby polymer to form effective cutting. On the other hand, it is unlike the abrasive of rigid grinding wheel because the flexibility of pneumatic wheel can have self-adaptation according to the changes in local curvature and achieve large scale copying contact between tools and work piece. Combined with the lay elastic system theory and Preston equation and coefficients, the mechanics model of polishing is given. The results of experiment shows the Ra of workpiece can be reached to 0.09um and the efficiency of process can be improved three times more than free abrasive machining. It will show its wild prospects in the process of polishing.