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Home » Topics » Design » Accuracy

Accuracy
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Renishaw System Tests Accuracy of Machine Tools

March 19, 2013
The new Renishaw XR20-W calibration system measures the angular position of rotary axes to within ±1 arc second, wirelessly, for t...
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Product News

January 1, 2013
The complete Product News section from the January/February 2013 issue of Gear Technology.
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Mitutoyo CMM Brings Accuracy and Performance to In-line Applications

October 22, 2012
Mitutoyo America Corporation announces availability of the new MACH-3A CNC Coordinate Measuring Machine - a CMM that brings levels accura...
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Towards an Improved AGMA Accuracy Classification System on Double-Flank Composite Measurements

June 1, 2012
AGMA introduced ANSI/AGMA 2015–2–A06— Accuracy Classification System: Radial System for Cylindrical Gears, in 2006 as the first major rewrite of the double-flank accuracy standard in over 18 years. This document explains concerns related to the use of ANSI/AGMA 2015–2–A06 as an accuracy classification system and recommends a revised system that can be of more service to the gearing industry.
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Runout, Helix Accuracy and Shaper Cutters

June 1, 2012
Our experts discuss runout and helix accuracy, as well as the maximum number of teeth in a shaper cutter.
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Manufacturing Method of Large-Sized Spiral Bevel Gears in Cyclo-Palloid System Using Multi-Axis Control and Multi-Tasking Machine Tool

August 1, 2011
In this article, the authors calculated the numerical coordinates on the tooth surfaces of spiral bevel gears and then modeled the tooth profiles using a 3-D CAD system. They then manufactured the large-sized spiral bevel gears based on a CAM process using multi-axis control and multi-tasking machine tooling. The real tooth surfaces were measured using a coordinate measuring machine and the tooth flank form errors were detected using the measured coordinates. Moreover, the gears were meshed with each other and the tooth contact patterns were investigated. As a result, the validity of this manufacturing method was confirmed.
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Zerol Bevel Gears: Tribology Aspects in Angular Transmission Systems, Part III

November 1, 2010
Zerol bevel gears are the special case of spiral bevel gears with a spiral angle of 0°. They are manufactured in a single-indexing face milling process with large cutter diameters, an extra deep tooth profile and tapered tooth depth.
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Crowning Techniques in Aerospace Actuation Gearing

August 1, 2010
One of the most effective methods in solving the edge loading problem due to excess misalignment and deflection in aerospace actuation gearing is to localize tooth-bearing contact by crowning the teeth. Irrespective of the applied load, if the misalignment and/or deflection are large enough to cause the contact area to reduce to zero, the stress becomes large enough to cause failure. The edge loading could cause the teeth to break or pit, but too much crowning may also cause the teeth to pit due to concentrated loading. In this paper, a proposed method to localize the contact bearing area and calculate the contact stress with crowning is presented and demonstrated on some real-life examples in aerospace actuation systems.
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Entrepreneurialism and Survival in the Global Market

July 1, 2008
Joe Arvin of Arrow Gear gives his insight on what it takes to succeed in today's gear industry.
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ADCOLE Offers High-Speed Crankshaft Gage for Better Accuracy

November 2, 2007
A new high-speed, in-line, automatic crankshaft measurement gage for production environments that provides sub-micron accuracy has been i...
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