By David A. Dornfeld, Dae-Eun Lee
This e-book offers a truly thorough survey of the sphere of precision production. Key suggestions in precision computing device layout in addition to precision production methods are mentioned. figuring out the previous is important in totally realizing the latter, and this is often one of many few books that talks approximately either elements in significant size. i actually loved the way in which the e-book started with an outline of the ancient improvement of producing know-how and their motivators. It helped in surroundings context for the discussions that undefined, and confirmed that whereas the elemental drives of precision have remained an analogous, as higher and higher precision is required in items and structures, the strategies of accomplishing them continue altering.
The authors spend a couple of chapters discussing a number of the assets of precision (and imprecision) in laptop and structures, corresponding to thermal error, vibrational mistakes, and structural error. there's a superb dialogue on blunders mapping, which talks approximately how one can mix diversified assets of blunders in picking out the web blunders in a mechanical procedure. those chapters supply stable history and context for the next dialogue on precision production strategies. The publication focusses on mechanical fabric elimination procedures, and talks approximately procedures at the traditional scale in addition to at the micro scale. there's a short dialogue on semiconductor and nano scale techniques as well.
I felt that this booklet provides an exceptional evaluation of precision production. the sector is kind of vast, and the authors don't test absolutely span it, yet in its place attempt to spotlight its most vital recommendations. Copious references are supplied, and fabric from varied resources are pulled jointly. many of the innovations mentioned, like vibrations for instance, are coated in a lot larger aspect in different texts (which are acknowledged), however the element of this publication is to teach how those diversified recommendations impact production approaches and structures. I taught a graduate path in keeping with the cloth during this e-book, and that i felt that its scope was once relatively applicable for the category. despite the fact that, it should be pointed out that it doesn't healthy the profile of a conventional textbook, because it doesn't have many examples and no end-of-chapter routines. yet this is often to be anticipated because the subject doesn't lend itself to easy difficulties (strictly conversing, lots of the difficulties within the box are examine difficulties and are mentioned in educational journals, numerous of that are mentioned within the text).
This ebook will serve good as a reader for a graduate direction, and as a reference for layout and production engineers.
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Extra resources for Precision Manufacturing
A “master screw form” seen on the left-hand side of the machine is used to guide the tool as it is fed along the workpiece. The work is turned by a falling weight rotating the “tailstock” to which the part is attached. This process allowed the duplication of screw elements (as used in the feed mechanism here) for other machines. 11. Here it is shown for creating wood ornamentation for furniture. The pole lathe operates on the 22 PRECISION MANUFACTURING power of a bow overhead “springing and un-springing” with the action of the worker’s foot on the pedal below the lathe.
The most significant point to be made from these two figures is that it is possible to trace the dimensional, contour and surface accuracy of a workpiece back to specific machine elements through the error generating mechanisms at work. With that knowledge, we can proactively design machines and processes for precision manufacturing.
Finally, there is a long-standing belief that minimizing manufacturing cost and obtaining high precision are contradictory. If we stay with the old concept that machining speed is necessarily low for precision components (recall the feedrate discussion above) this belief is hard to dismiss. However, the intelligent application of precision manufacturing principles has offered ample proof that precision components can be made competitively. The best example is the hard disk on the computer on which these notes are being prepared!