A new design on drive trains for light weight robotic arms

This article presents a unified design for lightweight robotic arms based on a unified description of structure and drive trains. In the unified design, the drive trains and structural dimensions are parameterized as design variables, and a major objective minimizes the total mass of robotic arms satisfying the constraint conditions and design criteria. To implement the optimization problem, a mapping relationship between mass and torque of drive trains is introduced as their power–density curves, which enable a unified description of structure and drive trains combining with the dynamics of robotic arms. In this implementation of unified design, there are two modules: structure optimization and drive trains design. The finite element method with nonlinear programming by quadratic Lagrange algorithm is adopted to implement the structure optimization. Moreover, the dynamic analysis in MSC ADAMS is achieved to design the drive trains of robotic arms. This method could uniformly evaluate all components of robotic arms in mass and continuously search the global optimal results. Finally, a design example on this unified design is compared with a referenced design to illustrate the validity and advantage of the proposed scheme.

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Double-Parameter Regression Design of Drive Trains for Lightweight Robotic Arms

Lecture Notes in Electrical Engineering - Mechanism and Machine Science ◽

10.1007/978-981-10-2875-5_19 ◽

2016 ◽

pp. 223-236

Author(s):

Haibin Yin ◽

Cheng Kong ◽

Mingchang He ◽

Shansheng Huang

Keyword(s):

Robotic Arms ◽

Drive Trains ◽

Regression Design

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Windscale Pile Reactors: Decommissioning Progress on a Fifty Year Legacy

11th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B ◽

10.1115/icem2007-7157 ◽

2007 ◽

Author(s):

Richard J. Sexton

Keyword(s):

Carbon Fiber ◽

Reactor Core ◽

Light Weight ◽

Top Down ◽

Technical Approach ◽

Robotic Arms ◽

The World ◽

The Uk ◽

Technical Assessment ◽

High Payload

The decommissioning of the Windscale Pile 1 reactor, fifty years after the 1957 fire, is one of the most technically challenging decommissioning projects in the UK, if not the world. This paper presents a summary of the 1957 Windscale Pile 1 accident, its unique challenges and a new technical approach developed to safely and efficiently decommission the two Windscale Pile Reactors. The reactors will be decommissioned using a top down approach that employs an array of light weight, carbon fiber, high payload robotic arms to remove the damaged fuel, the graphite core, activated metals and concrete. This relatively conventional decommissioning approach has been made possible by a recently completed technical assessment of reactor core fire and criticality risk which concluded that these types of events are not credible if relatively simple controls are applied. This paper presents an overview of the design, manufacture and testing of equipment to remove the estimated 15 tons of fire damaged fuel and isotopes from the Pile 1 reactor. The paper also discusses recently conducted characterization activities which have allowed for a refined waste estimate and conditioning strategy. These data and an innovative approach have resulted in a significant reduction in the estimated project cost and schedule.

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Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100144218 ◽

1986 ◽

Vol 44 ◽

pp. 548-549

Author(s):

W. T. Donlon ◽

J. E. Allison ◽

S. Shinozaki

Keyword(s):

Electron Microscopy ◽

Automotive Industry ◽

Fuel Economy ◽

High Strength ◽

Al Alloys ◽

Light Weight ◽

Thin Sections ◽

Strength And Durability ◽

Rapidly Solidified ◽

Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

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Design of spline surface vacuum gripper for pick and place robotic arms

Journal of Modern Manufacturing Systems and Technology ◽

10.15282/jmmst.v4i2.5181 ◽

2020 ◽

Vol 4 (2) ◽

pp. 48-55

Author(s):

A. S. Jamaludin ◽

M. N. M. Razali ◽

N. Jasman ◽

A. N. A. Ghafar ◽

M. A. Hadi

Keyword(s):

Cycle Time ◽

Industrial Robot ◽

Annealing Process ◽

Vacuum Suction ◽

Robotic Arms ◽

Custom Made ◽

Pick And Place ◽

Manufacturing Procedure ◽

Production Flexibility ◽

The Impact

The gripper is the most important part in an industrial robot. It is related with the environment around the robot. Today, the industrial robot grippers have to be tuned and custom made for each application by engineers, by searching to get the desired repeatability and behaviour. Vacuum suction is one of the grippers in Watch Case Press Production (WCPP) and a mechanism to improve the efficiency of the manufacturing procedure. Pick and place are the important process for the annealing process. Thus, by implementing vacuum suction gripper, the process of pick and place can be improved. The purpose of vacuum gripper other than design vacuum suction mechanism is to compare the effectiveness of vacuum suction gripper with the conventional pick and place gripper. Vacuum suction gripper is a mechanism to transport part and which later sequencing, eliminating and reducing the activities required to complete the process. Throughout this study, the process pick and place became more effective, the impact on the production of annealing process is faster. The vacuum suction gripper can pick all part at the production which will lower the loss of the productivity. In conclusion, vacuum suction gripper reduces the cycle time about 20%. Vacuum suction gripper can help lower the cycle time of a machine and allow more frequent process in order to increase the production flexibility.

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Light-Weight Tire Concept

Tire Science and Technology ◽

10.2346/1.2137514 ◽

1996 ◽

Vol 24 (2) ◽

pp. 119-131

Author(s):

F. Lux ◽

H. Stumpf

Keyword(s):

Fuel Consumption ◽

Automobile Industry ◽

Rolling Resistance ◽

Performance Standards ◽

Light Weight ◽

Production Methods ◽

Lower Fuel Consumption ◽

Material Resources ◽

The Past ◽

Tire Production

Abstract Current demands by the consumer, the automobile industry, and the environment have determined the basis of this investigation. In the past, the requirements—ever faster, ever sportier—were accepted as decisive parameters for the development of our study. In the future, rational and safety-related tire characteristics as well as environmental consciousness will increase, whereas purely performance-related parameters will diminish in their importance. Through our light-weight tire project, we have paved the way for future tire generations. The first priority is the minimal use of material resources; this means a reduction of materials and energy in tire production by using advanced design and production methods without sacrificing performance standards. This benefits the consumer—the final judge of all of our activities—by considerably reducing the rolling resistance, leading to lower fuel consumption. Further design targets include the improvement of rolling behavior and increased comfort by reducing tire weight, and therefore a reduction in unsprung masses on the vehicle.

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Electrolytic analysis with platinum electrodes of light weight

American Journal of Science ◽

10.2475/ajs.s4-34.200.107 ◽

1912 ◽

Vol s4-34 (200) ◽

pp. 107-112

Author(s):

F. A. Gooch ◽

W. L. Burdick

Keyword(s):

Light Weight ◽

Platinum Electrodes

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Determinants Considered by Consumers for Brand Selection - with Reference to Laptops in Albania

Creative and Knowledge Society ◽

10.2478/cks-2014-0008 ◽

2014 ◽

Vol 4 (2) ◽

Author(s):

Margret Plloçi ◽

Macit Koc

Keyword(s):

Primary Data ◽

Battery Life ◽

Decision Making Process ◽

Light Weight ◽

Sources Of Information ◽

Technical Features ◽

The Relationship ◽

The City ◽

Different Sources ◽

Core Features

Abstract Purpose of the article There is relatively a big number of brands in the market of laptops nowadays in Albania. It appears that the number of brands offered in this market could easily be compared to the number of brands in Europe and even broader. The purpose of this study is to help Albanian vendors understand the criteria that consumers take into consideration when they make the decision to purchase a laptop. Methodology/methods The research is based on the collection and the analyses of the primary data collected through interviews to people like managers or employees who work in the sector of trading laptops or in businesses like education where laptops are broadly used recently; then a survey is done through a questionnaire delivered to customers who already own and use a laptop and customers who are potential buyers of laptops. Scientific aim The aim of the research is to identify if there are any relationships between the demographics of the consumers and the criteria of buying a laptop; on the other hand, to find out how is the relationship between the demographics and the features of different brands. Findings The study found out that Albanian consumers have good knowledge of laptops and their brands, and they use different sources of information for making their decisions in buying a laptop; it is found that there are relationships between some demographics like age or gender and the appraisal for some attributes of the laptops like price, design and high graphics card; it is also found that some technical features and other attributes of using laptops are some of the determinants that influence the laptops’ purchases. Conclusions It is realized that one of the most important demographics of the consumers is their age. Some core features like RAM, ROM, battery life, processor quality, light weight or attributes that are connected to the purposes of using the laptop computers like practicality and mobility in using them, work and studying processes, quick access to the internet are determinant factors which influence the decision making process of purchasing a laptop. I would recommend that future researches be focused also on the relationship between the customers’ income and their preferred brand or ranking brands according to the customers’ preferences. Such studies should also extend outside the city of Tirana.

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