Die vielseitigen Moglichkeiten, die das FlieBpressen als Umformverfahren fur die Formgebung von Metallen bietet, fuhrten bei steigenden Anspruchen der Abnehmer hinsichtlich der MaBgenauigkeit, Werkstoffausnutzung sowie der Breite des Formenspektrums zu immer komplizierteren Werkstucken. Die Forderungen nach neuen, komplexeren Profilformen und groBeren Querschnitts- anderungen hat ten immer groBere PreBkrafte zur Folge, woraus eine sehr hohe mechanische Belastung der Werkzeuge resultiert. Nach DIN 8583 zahlt das FlieBpressen zur Gruppe der Durchdruckverfahren und wird in die Untergruppen FlieBpressen mit starren Werkzeugen und FlieB- pressen mit Wirkmedien eingeteilt, wobei bei dem letztgenannten Verfahren das Werkstuck durch Einwirkung eines Druckmediums durch die Matrize ge- druckl wird. In Bild list das Prinzip der FlieBpreBverfahren dargestellt. Das hydrostatische FlieBpressen ist eines von mehreren Verfahren, die eine wesentliche Verringerung des Kraftbedarfs ermoglichen und demzufolge zu einer Verringerung der mechanischen Belastung der Werkzeuge fuhren. Durch den Wegfall der Reibung zwischen Rohteil und Aufnehmerwand sowie durch die Bildunq gunstiger Schmierungsbedingungen zwischen Werkstuck und Matrize werden die Reibungsverluste vermindert, was beim Pressen von Pro- filen mit im Verhaltnis zur Profilquerschnittsflache groBem Profilumfang (groGe Reiblange) besondere Vorteile bietet. Die seitliche Abstutzung des Rohteils verhindert dessen Aufstauchen, und es konnen Rohteile mit belie- big groGem Langen/Durchmesser-Verhaltnis (lo/d ) gepreBt werden.

Historians of the various tools trades have long wanted a work specifically on saws and this, the first, is an attempt to match the detail and scholarship of the best that cover planes, cutlery, spanners and measuring tools. The author is a frequent writer and lecturer on saws and the history of their manufacture, and is able to base his work on 15 years of original research and the building of a personal collection of saws - probably the largest in the world - which is housed with the renowned Ken Hawley Collection in Sheffield's Kelham Island Industrial Museum. Together, these collections form a unique research base and visitor attraction. This scholarly book is illustrated with almost 2000 photographs, the majority by the author, and with its listings of saw makers and dealers forms the most comprehensive directory to date of British names in the tool trades.

Dieser Band ist das Ergebnis der mehrjahrigen Tatigkeit eines von der Gesellschaft fur Informatik (GI) angeregten Arbeitskreises. Das wirtschaftlich eminent wichtige und sich rapide entwickelnde Gebiet der rechnerunterstutzten Systeme in der Fertigung zeigte einen grossen Bedarf fur ein solches Handbuch. Durch dieses Buch soll einerseits dem Experten ein Leitfaden und Nachschlagewerk in die Hand gegeben und andererseits das Management bei der Entscheidungsvorbereitung auf diesem Gebiet unterstutzt werden. Es soll eine Hilfestellung sowohl bei der Beurteilung und Auswahl als auch bei der Entwicklung und Einfuhrung solcher Systeme geben. Unter den vielen von Computer Aided Manufacturing beeinflussten Unternehmensbereichen ist besonders die Entwicklung aufzufuhren, in der heute haufig schon mit CAD-Techniken gearbeitet wird. Der Bereich CAD wird eingehend in dem ebenfalls von der GI initiierten CAD-Handbuch behandelt und ist daher in dem vorliegenden CAM-Handbuch ausgespart. Das CAD- und das CAM-Handbuch sind somit als zwei sich erganzende Werke zu betrachten. Der Leser, der sich intensiv mit CAM befasst, sollte genugend Grundkenntnisse uber CAD besitzen, um die Zusammenhange zwischen diesen beiden Technologien zu verstehen.

A complete method of making a slipjoint folder from raw materials all the way to the finished knife. The stock removal method is utilized. 90 pages of detailed photos and descriptions of every step involved. This book includes a design for a simple slipjoint folder.

A collection of 15 additions to the model engineer's armoury of tools and equipment from the former editor of Model Engineer's Workshop magazine. This practical collection covers benchwork, the lathe and milling operations, and includes: marking-out and machining aids; a simple motorized filing machine; an unusual and improved milling vice; a micrometer stand; internal and external chuck stops; cross drilling jigs; a hand turning rest; rear mounted toolposts; and a self-releasing mandrel handle.

When O. W. "Bud" Hampton made his first visit to the peoples in remote parts of the Highlands of Irian Jaya in 1982 and 1983, he found that their ancient stone-based technologies and culture remained virtually intact. During repeated and extended visits over twelve years, Hampton had unparalleled and irreproducible opportunity to observe the development, use, and cultural meaning of stone tool assemblages in their traditional contexts. In this unique study, Hampton describes the complete cultural inventory of both secular and sacred stones, ranging from utilitarian stone tools and profane symbolic stones through symbolic spirit stones, power stones with multiple functions, and medicinal power stone tools, as they were being used in the culture of this long-isolated people. Hampton portrays the complete cycle of quarrying, manufacture, trade, and uses of the stones. Specific archaeological questions are addressed in the context of a culture that provides the answers: What stimulates production? How are tool and symbolic stones manufactured? What is the role of women in quarrying and production? What kinds of trade mechanisms are at work? Are the distributions of stone tool types reliable language and cultural boundary markers? How are sacred stones created and what are their uses? The answers contain rosetta stones of information for worldwide application. Hampton examines the complexities of the Highlanders' unseen spirit world and its symbiotic relationship with the world of the seen. The dual worship of ancestor spirits and the sun within the same belief system is described, with all of the attendant material props. This extensively illustrated, carefully documented, holistic ethnography presents a detailed study of rarely observed behavior associated with traditional stone tools and sacred objects practiced by living people within their integrated society. Archaeologists, anthropologists, other scholars, as well as inquisitive general readers will find Culture of Stone: Sacred and Profane Uses of Stone among the Dani a valuable contribution not only to the ethnography of the New Guinea highlands but to archaeology and anthropology in general.

Subtitled 'use-wear analysis in some Final Upper Palaeolithic sites in the Basque country' this study discusses tool function using evidence from two sites in Northern Spain, Santa Catalina and Berniollo. Firstly the methodology used is clearly presented. Then the finds are categorised and their characteristics used to conjecture the action carried out with the tool and the material they were used to work on. Finally this information is used to discuss the assemblage of economic activities which took place in each settlement.

A multivariate study of approximately 1,500 ground stone tools (celts) from the Coast Salishan cultural area of British Columbia, Canada, forms the basis of this book. The traditional and often unthinking quest to find types within this largely unclassified class of material formed the starting point to the author's work. When statistical methods failed to discriminate betweenn typological groups, Mackie was forced to think more creatively about the behavioural environment of their use., especially how use-life would alter shape. This book is therefore both a study of stone tools and an exploration into archaeological systematics which problematises the manic classificatory zeal which is such a peculiar feature of most archaeologists.

This thesis looks at bifacial lithic industries in the Somme basin and the Escaut basin on the border of France and Belgium. A discussion of the general context of the Middle Pleistocene and its Acheulean industries precedes the evidence from the case studies. The different techniques of manufacture and a typology of different forms are described and comparisons are made between different assemblages, with a general synthesis at the end.

At the beginning of the twentieth century Britain was amongst the world leaders in the production of machine tools, yet by the 1980s the industry was in terminal decline. Focusing on the example of Britain's largest machine tool maker, Alfred Herbert Ltd of Coventry, this study charts the wider fortunes of this vital part of the manufacturing sector. Taking a chronological approach, the book explores how during the late nineteenth century the industry developed a reputation for excellence throughout the world, before the challenges of two world wars necessitated drastic changes and reorganisations. Despite meeting these challenges and emerging with confidence into the post-war market place, the British machine tool industry never regained its pre-eminent position, and increasingly lost ground to foreign competition. By using the example of Alfred Herbert Ltd to illuminate the broader economic and business history of the British machine tool industry, this study not only provides a valuable insight into British manufacturing, but also contributes to the ongoing debates surrounding Britain's alleged decline as a manufacturing nation.