Digging Machines


Book Description

Diggers are some of the hardest workers in the machine world. These spectacular photographs show off diggers in action, everywhere from farms to construction sites. With special attachments that scoop, drill, haul, and crush, they're ready to dig in and get the job done.




Automated/Mechanized Drilling and Countersinking of Airframes


Book Description

Modern aircraft manufacturing involves drilling and countersinking hundreds of thousands to millions of holes. Doing this work by hand accounts for 65% of the cost of airframe assembly, 85% of the quality issues, and 80% of the lost time due to injuries. Automated drilling and countersinking replaces traditional hand methods and involves using numeric control machinery to drill and countersink a finished hole “one shot” (drilling a finished hole without using pilot holes or tool changes). This is a proven cost reducing technology that improves quality where it has been applied successfully. The focus of this book is on automating the process of drilling and countersinking holes during airframe manufacturing. Since this is the area of greatest return on investment for airframe producers, the book provides a stepped approach for evaluating possible areas for applying automation and a detailed description of the process for choosing, acquiring, and transitioning the right machinery for success. It also provides a vision for a 10- to 15-year future state of airframe manufacture. Readers will use the information to: • Understand the evolution of automated/mechanized drilling and countersinking airframes. • Access decision models and matrices to help evaluate the feasibility of applying automation/mechanization to any airframe. • Gain access to a step-by-step procedure to select the right piece of machinery. • Learn the necessary processes for testing and transitioning machinery to production. • Assess and acquire data to evaluate the effect of the process. • Choose and train the right individuals to manage and run the machinery. • Conduct cost benefit analysis models. • Make recommendations for maintenance and spares. • Address socio-economic factors to reconfigure a facility from hand to automated activities. No other book provides such detailed technical, economic, and social information about automating the single largest contributor to airframe cost.







Autonomous Rock Excavation, Intelligent Control Techniques And Experimentation


Book Description

Earth-moving is a common activity at mines, construction sites, hazardous waste cleanup locations, and road works. Expensive and sophisticated machines such as wheel loaders are used for earth-moving. This book presents a robotic control approach to the computer control of wheel-loader-type excavators. The unpredictable and dynamic rock excavation environment poses challenges for the design of the real time control algorithm. The control method developed here is based on the analysis of human operators' performance; it applies neural networks, fuzzy logic and finite state machines to embody human excavation strategies for on-line bucket digging trajectory design. A behavior-based control architecture organizes operation of the modules to achieve quick system response. Extensive experiments have been performed to demonstrate the diggability of the algorithm in various difficult-to-excavate environments.







Machine Learning Applications in Non-Conventional Machining Processes


Book Description

Traditional machining has many limitations in today’s technology-driven world, which has caused industrial professionals to begin implementing various optimization techniques within their machining processes. The application of methods including machine learning and genetic algorithms has recently transformed the manufacturing industry and created countless opportunities in non-traditional machining methods. Significant research in this area, however, is still considerably lacking. Machine Learning Applications in Non-Conventional Machining Processes is a collection of innovative research on the advancement of intelligent technology in industrial environments and its applications within the manufacturing field. While highlighting topics including evolutionary algorithms, micro-machining, and artificial neural networks, this book is ideally designed for researchers, academicians, engineers, managers, developers, practitioners, industrialists, and students seeking current research on intelligence-based machining processes in today’s technology-driven market.




Machinery


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Rock Drilling


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Machinery


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The Compensation Review


Book Description

Reports of all decisions rendered in workmen's compensation cases in the federal courts and in the state supreme courts.