Coordinate Measuring Machines and Systems, Second Edition by Robert J. Hocken, Paulo H. Pereira

By Robert J. Hocken, Paulo H. Pereira

Due to the fact John Bosch edited and released the 1st model of this ebook in 1995, the area of producing and coordinate measuring machines (CMMs) and coordinate measuring structures (CMSs) has replaced significantly. despite the fact that, the elemental physics of the machines has now not replaced in essence yet became extra deeply understood. thoroughly revised and up-to-date to mirror the switch that experience taken position within the final 16 years, Coordinate Measuring Machines and platforms, moment version covers the evolution of measurements and improvement of criteria, using CMMs, probing structures, algorithms and filters, functionality and fiscal reviews, and accuracy.See What’s New within the moment variation: Explores the emerging expectancies of the person for operator interfaces, ease of use, algorithms, pace, communications, and computational services info the growth of machines corresponding to the non-Cartesian CMM in industry proportion and their elevate in accuracy and software Discusses alterations in probing structures, and the variety of issues they could bring to ever extra refined software program Examines the pressures created by way of new purposes to enhance laptop functionality The ebook beneficial properties new editors, one from academia and one from a metrology in depth person undefined, many new authors, and recognized specialists who've grown with the sector because the final model. Furnishing case stories from quite a lot of installations, the booklet info how CMMs can top be utilized to realize a aggressive virtue in quite a few company settings.

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This probe made it possible to attain higher accuracies with less expensive CMMs. In 1982, Carl Zeiss introduced the first CMM specifically designed to meet the requirements of gear and transmission production. This machine, ZMC 550, greatly influenced the development of traditional gear testers. 19 The Zeiss UMM 500, which was introduced in 1973. ) In 1985, Carl Zeiss and Sheffield became the first manufacturers to produce CMMs with full software error correction. The Zeiss process is called computer-aided accuracy (CAA), while Sheffield called its technique microprocessor-enhanced accuracy (MEA).

Bendix received sales credit for the first machine. Western Electric had just initiated the return-on-investment method for evalu­ating capital equipment purchases. Although John Haney was unfamiliar with the technique, he projected that the $12,000 machine would pay for itself in a reasonable time. Marcus and John spent many hours estimating the payback period and felt that they may have been exaggerating the numbers to justify a payback period of three years. John submitted the requisition for approval and, after a series of ­meetings with management, received authorization to purchase the machine.

021 nm at 1 m (Quinn 2003). Special measuring machines using the working laser’s frequency offset locked to iodinestabilized laser have been built (Stroup, Overcash, and Hocken 2008). The uncertainty of the iodine-stabilized laser, whereas it was once effectively set by convention, can now be reduced somewhat further if the laser is calibrated against an optical frequency comb. The comb is arbitrarily good (limited only by the uncertainty of the frequency standard that sets its pulse repetition rate), and the uncertainty of a calibrated iodine-stabilized laser is better than the uncertainty of an uncalibrated iodine-stabilized laser.

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