[PDF] High Efficiency Deep Grinding eBook

Author : Taghi Tawakoli
Publisher : Wiley
Page : 154 pages
File Size : 29,89 MB
Release : 1993-04-15
Category : Technology & Engineering
ISBN : 9780852988206

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A book which describes and discusses the technological requirements and theoretical principles of high-efficiency deep grinding. The role of machine settings and their influence on the process is examined and explained. The techniques and findings presented here are based on experience gained in a wide range of industrial and research projects.

Author : W. Brian Rowe
Publisher : Elsevier
Page : 452 pages
File Size : 21,94 MB
Release : 2009-06-16
Category : Technology & Engineering
ISBN : 0815520190

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The book is aimed at practitioners, engineers, researchers, students and teachers. The approach is direct, concise and authoritative. Progressing through each major element of the grinding system and then on to machine developments and process control, the reader becomes aware of all aspects of operation and design. Trends are described demonstrating key features. Coverage includes abrasives and super-abrasives, wheel design, dressing technology, machine accuracy and productivity, grinding machine design, high-speed grinding technology, cost optimization, ultra-precision grinding, process control developments, vibration control, coolants and fluid delivery. Trends in high precision and high speed grinding are explored Principles underlying improvements in machines and processes are explained Numerically worked examples give scale to essential process parameters Recent research findings and original contributions to knowledge are included A number of ultra-precision grinding machine developments are included

Author :
Publisher :
Page : pages
File Size : 12,64 MB
Release : 2010
Category :
ISBN :

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This research considers the temperatures generated in the workpiece during profile and cylindrical traverse grinding in the High Efficiency Deep Grinding (HEDG) regime. The HEDG regime takes large depths of cut at high wheel and workpiece speeds to create a highly efficient material removal process. This aggressive processing generates high temperatures in the contact zone between the wheel and workpiece. However, the beneficial contact angle and the rapid removal of the heated wheel - workpiece contact zone results in low temperatures in the finished surface. Temperatures in the ground surface can be predicted with knowledge of the specific grinding energy and the grinding parameters used. Specific grinding energies recorded at high specific material removal rates demonstrated a constant value of specific grinding energy dependent on cutting and contact conditions, improving accuracy of the predictive model. This was combined with a new approach to burn threshold modelling, which demonstrated an improved division of damaged and undamaged surfaces. Cutting and contact conditions in the grinding profile vary dependent on their position. This thesis shows how temperatures vary with location and estimates the partitioning of the heat flux to the regions of the grinding profile. This suggested a constant partitioning of energy to each of the three surfaces considered independently of specific material removal rates. Further a potential link was shown between the surface and the sidewall of the grinding profile, which allows temperatures in a secondary surface to be predicted given knowledge of that in the primary. Finally, the work has demonstrated the feasibility of the Superabrasive Turning process. Using small values of feed per turn and high workpiece feedrates promoted high values of removal rate with low depths of thermal penetration in the as ground surface. Thus the process has become viable for high speed cylindrical traverse grinding.

Author : Andrew John Bell
Publisher :
Page : pages
File Size : 10,6 MB
Release : 2009
Category :
ISBN :

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This research considers the temperatures generated in the workpiece during profile and cylindrical traverse grinding in the High Efficiency Deep Grinding (HEDG) regime. The HEDG regime takes large depths of cut at high wheel and workpiece speeds to create a highly efficient material removal process. This aggressive processing generates high temperatures in the contact zone between the wheel and workpiece. However, the beneficial contact angle and the rapid removal of the heated wheel? workpiece contact zone results in low temperatures in the finished surface. Temperatures in the ground surface can be predicted with knowledge of the specific grinding energy and the grinding parameters used. Specific grinding energies recorded at high specific material removal rates demonstrated a constant value of specific grinding energy dependent on cutting and contact conditions, improving accuracy of the predictive model. This was combined with a new approach to burn threshold modelling, which demonstrated an improved division of damaged and undamaged surfaces. Cutting and contact conditions in the grinding profile vary dependent on their position. This thesis shows how temperatures vary with location and estimates the partitioning of the heat flux to the regions of the grinding profile. This suggested a constant partitioning of energy to each of the three surfaces considered independently of specific material removal rates. Further a potential link was shown between the surface and the sidewall of the grinding profile, which allows temperatures in a secondary surface to be predicted given knowledge of that in the primary. Finally, the work has demonstrated the feasibility of the Superabrasive Turning process. Using small values of feed per turn and high workpiece feedrates promoted high values of removal rate with low depths of thermal penetration in the as ground surface. Thus the process has become viable for high speed cylindrical traverse grinding.

Author : Stephen Malkin
Publisher : Industrial Press Inc.
Page : 392 pages
File Size : 10,33 MB
Release : 2008
Category : Technology & Engineering
ISBN : 9780831132477

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Presenting a comprehensive treatment of grinding theory and its practical utilization, this edition focuses on grinding as a machining process using bonded abrasive grinding wheels as the cutting medium. It provides a description of abrasives and bonded abrasive cutting tools.