Simulation and Tool Path Optimization for the Hexapod Milling Machine
Simulation and Tool Path Optimization for the Hexapod Milling Machine

Author: Shangjian Du

Publisher: Vulkan-Verlag GmbH

Published: 2005

Total Pages: 148

ISBN-13: 9783802787263

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To fully exploit the advantages of multi-axis machining in a modern production environment, new types of parallel kinematic machines (PKM) and new processing technologies such as those using high speed cutting (HSC) are needed. However, the machining accuracy and hence the process reliability of PKM are still not satisfactory when using today's CAM systems due to the complexity of the dynamic behavior of machine axes. A hybrid simulation method for optimizing tool paths that overcomes the limits of today's CAM systems is presented in this work. Two major independent simulations were performed, to examine the influences on the quality of the final product. It is shown that the kinematics, the dynamics and the stiffness are important factors affecting the accuracy of PKM. These factors can be taken into account, to obtain an accurate modeling of PKM-behavior.

Motion and Operation Planning of Robotic Systems
Motion and Operation Planning of Robotic Systems

Author: Giuseppe Carbone

Publisher: Springer

Published: 2015-03-12

Total Pages: 520

ISBN-13: 3319147056

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This book addresses the broad multi-disciplinary topic of robotics, and presents the basic techniques for motion and operation planning in robotics systems. Gathering contributions from experts in diverse and wide ranging fields, it offers an overview of the most recent and cutting-edge practical applications of these methodologies. It covers both theoretical and practical approaches, and elucidates the transition from theory to implementation. An extensive analysis is provided, including humanoids, manipulators, aerial robots and ground mobile robots. ‘Motion and Operation Planning of Robotic Systems’ addresses the following topics: *The theoretical background of robotics. *Application of motion planning techniques to manipulators, such as serial and parallel manipulators. *Mobile robots planning, including robotic applications related to aerial robots, large scale robots and traditional wheeled robots. *Motion planning for humanoid robots. An invaluable reference text for graduate students and researchers in robotics, this book is also intended for researchers studying robotics control design, user interfaces, modelling, simulation, sensors, humanoid robotics.

Advanced Numerical Methods to Optimize Cutting Operations of Five Axis Milling Machines
Advanced Numerical Methods to Optimize Cutting Operations of Five Axis Milling Machines

Author: Stanislav S. Makhanov

Publisher: Springer Science & Business Media

Published: 2007-04-18

Total Pages: 206

ISBN-13: 354071121X

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This book presents new optimization algorithms designed to improve the efficiency of tool paths for five-axis NC machining of sculptured surfaces. The book covers both the structure of the SLAM problem in general and proposes a new extremely efficient approach. It can be used by undergraduate and graduate students and researchers in the field of NC machining and CAD/CAM as well as by corporate research groups for advanced optimization of cutting operations.

Parallel Robots
Parallel Robots

Author: J.-P. Merlet

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 367

ISBN-13: 9401095876

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Parallel robots are closed-loop mechanisms presenting very good performances in terms of accuracy, rigidity and ability to manipulate large loads. Parallel robots have been used in a large number of applications ranging from astronomy to flight simulators and are becoming increasingly popular in the field of machine-tool industry. This book presents a complete synthesis of the latest results on the possible mechanical architectures, analysis and synthesis of this type of mechanism. It is intended to be used by students (with over 100 exercises and numerous Internet addresses), researchers (with over 500 references and anonymous ftp access to the code of some algorithms presented in this book) and engineers (for which practical results and applications are presented).

Milling Simulation
Milling Simulation

Author: Weihong Zhang

Publisher: John Wiley & Sons

Published: 2016-06-15

Total Pages: 272

ISBN-13: 1119262917

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Reliable scheduling in cutting conditions is very important in machining processes, and this requires thorough understanding of the physical behaviors of the machining process, which cannot be achieved without understanding the underlying mechanism of the processes. The book describes the mechanics and dynamics together with the clamping principles in milling processes, and can be used as a guideline for graduate students and research engineers who wish to be effective manufacture engineers and researchers. Many books have focused on common principles, which are suitable for general machining processes, e.g., milling, turning and drilling, etc. This book specifically aims at exploring the mechanics and dynamics of milling processes. Original theoretical derivations and new observations on static cutting force models, dynamic stability models and clamping principles associated with milling processes are classified and detailed. The book is indented as a text for graduate students and machining engineers who wish to intensively learn milling mechanism and machine tool vibration.

Toolpath and Cutter Orientation Optimization in 5-Axis CNC Machining of Free-form Surfaces Using Flat-end Mills
Toolpath and Cutter Orientation Optimization in 5-Axis CNC Machining of Free-form Surfaces Using Flat-end Mills

Author: Shan Luo

Publisher:

Published: 2015

Total Pages:

ISBN-13:

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Planning of optimal toolpath, cutter orientation, and feed rate for 5-axis Computer Numerical Control (CNC) machining of curved surfaces using a flat-end mill is a challenging task, although the approach has a great potential for much improved machining efficiency and surface quality of the finished part. This research combines and introduces several key enabling techniques for curved surface machining using 5-axis milling and a flat end cutter to achieve maximum machining efficiency and best surface quality, and to overcome some of the key drawbacks of 5-axis milling machine and flat end cutter use. First, this work proposes an optimal toolpath generation method by machining the curved surface patch-by-patch, considering surface normal variations using a fuzzy clustering technique. This method allows faster CNC machining with reduced slow angular motion of tool rotational axes and reduces sharp cutter orientation changes. The optimal number of surface patches or surface point clusters is determined by minimizing the two rotation motions and simplifying the toolpaths. Secondly, an optimal tool orientation generation method based on the combination of the surface normal method for convex curved surfaces and Euler-Meusnier Sphere (EMS) method for concave curved surfaces without surface gouge in machining has been introduced to achieve the maximum machining efficiency and surface quality.

Virtual Modeling and Simulation of Vertical Machining Center and CNC Milling Machine for Training and Instruction
Virtual Modeling and Simulation of Vertical Machining Center and CNC Milling Machine for Training and Instruction

Author: Vishnu Vardhan Venkata Irigireddy

Publisher:

Published: 2000

Total Pages: 0

ISBN-13:

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"Virtual manufacturing (VM) is a virtual reality based engineering application that provides an environment to model and simulate an actual manufacturing system through effective use of computers. Virtual computer numerical control (VCNC), which falls under the realm of virtual manufacturing applications, involves the development of a computer based virtual environment for modeling and simulating the functionality of a machine tool and the material removal process. In this thesis, virtual modeling and simulation of Bridgeport Series I CNC R2E3 Milling Machine with BOSS 81 (Bridgeport Operating System Software) controller and Cincinnati Milacron Sabre 750 3-axes CNC Vertical Machining Center with Acramatic 2100E CNC open architecture controller are presented. The above-mentioned virtual machine tools, which were developed using Deneb's Virtual NC version2.1 simulation software, provided the means for realization of the machining process on a computer, before the actual machining process is commenced on the real machine. Various CNC programs developed for machining various parts were simulated using the developed virtual CNC machines and virtual CNC controller. The virtual controller has the capability for detecting collisions between the different machine components as the CNC part program is being simulated. While running the simulation, the user can observe the changes in various parameters like feed rate, depth of cut, material removal rate, cycle time etc. Virtual machine tools that were developed will help in improving the quality of machined components, eliminating catastrophic program errors and optimizing the cutting path. As a future work, the developed virtual machine tools can be incorporated in a web-based virtual environment where the user can input his CNC programs through a graphical user interface for simulation"--Abstract, page iv