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Excerpt from Screw Thread Kinks
TO cut a left-hand thread, the handle I is lowered until gear F meshes with E. This makes L run in the reverse direction, as E, G and the intermediate run the same way. This is the Object Of the gear F, which is idle when cutting right-hand threads.
Having settled the direction in which the gears run, the next question is, the gears required to produce the right thread on the work. It is easy to see that if the lathe spindle and the lead screw revolve at the same rate, the carriage will advance one thread at each revolution and cut the same thread as the lead screw.
With the gearing shown in Fig. 1, this will not be the case, because the gear on the stud S has fewer teeth than the main driving gear E, so that the lead screw will turn at a slower rate, and cut a finer thread.
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Screw Thread Kinks (Classic Reprint)
Print on DemandDa: Forgotten Books, London, Regno Unito
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Paperback. Condizione: New. Print on Demand. This book is a wellspring of practical machining knowledge, containing useful tips from experienced professionals. The collected kinks and information presented in this book originated from machinists on the shop floor. The aim is to empower readers with a comprehensive resource of out-of-the-way information. In this volume, the focus is on screw thread kinks, which covers vital topics such as selecting the proper gears for screw cutting, cutting left-hand threads, and dealing with fractional threads. The author takes care to explain key concepts without relying on overly technical jargon. Readers will appreciate the clear and concise language, which makes the information easy to understand and apply. Whether you're a seasoned machinist or just starting out, this book is an invaluable addition to your library. With its wealth of practical advice and insights, it will help you improve your skills and tackle even the most challenging screw threading tasks with confidence. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9780282170738_0
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Screw Thread Kinks (Classic Reprint)
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9780282170738
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