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Temperature Induced Dimensional Changes Temperature causes various materials to change size at different rate, known as their Coefficients of Expansion (COE). The effects of this phenomenon on precision dimensional measurements are continuous and costly to industry. Precautions can be taken to allow parts and gages to temperature stabilize before conducting gage R & R studies, but the fact remains that on the shop floor temperatures vary all the time. The slow pace at which industry has accepted this reality probably has to do with the subtlety of these tiny size variations and our inability to sense gradual, but significant temperature changes.
The purpose of this article is to discuss ISO 4156/ANSI B92.2M-1980 and to compare it with other, older standards still in use. In our experience designing and manufacturing spline gauges and other spline measuring or holding devices for splined component manufacturers throughout the world, we are constantly surprised that so many standards have been produced covering what is quite a small subject. Many of the standards are international standards; others are company standards, which are usually based on international standards. Almost all have similarities; that is, they all deal with splines that have involute flanks of 30 degrees, 37.5 degrees or 45 degrees pressure angle and are for the most part flank-fitting or occasionally major-diameter-fitting.
Shop floor inspection and gaging equipment is putting advanced metrology systems right on the factory floor. Hereâ€™s a collection of articles on shop floor inspection and gages from companies like Gleason, Mahr, Comtorgage, United Tool Supply and Frenco.
The latest in machine tools, cutting tools, inspection equipment, shop floor gages and other products for the gear industry.
Gear inspection has long been a highly specialized costly investment and an overall challenging part of the gear manufacturing process. Given that complicated gages, testers, and CNC equipment all go into creating high quality gears, companies may want to invest in a CMM to streamline inspection.
News Items About Gages
1 Starrett Digital Gages Offer Diverse Force Measurements (October 12, 2018)
The L.S. Starrett Co. has introduced its DFC and DFG Series of Digital Handheld Force Gages. Depending on the series, advanced automati... Read News
2 Mahr Announces Stuart Manser as Director of Sales, Precision Gages for North America (April 4, 2016)
Mahr Federal has named Stuart Manser as Director of Sales, Precision Gages for North America. Reporting directly to Mahr Federal CEO Tony... Read News
3 Sunnen Bore Gages Offer Precise Hole Measurement (November 29, 2012)
Sunnen's PG Bore Gages take an intuitive approach to hole gaging with a mechanical design and speedometer-type scale for quick visual... Read News
4 PG-Series Bore Gages Mount Directly to Machines (February 13, 2008)
With no need for electrical or air connections, Sunnen’s PG-Series Bore Gages can be mounted directly to machining stations, making... Read News
5 Mahr Adds Depth Gages to Wireless Line Offerings (March 26, 2020)
Mahr Inc. has announced an expanded line of digital depth gages. The pocket-sized 30 EWRi is easy to take along for fast depth measuremen... Read News
6 Mitutoyo Introduces QM-Height Digital Gages (August 22, 2014)
Mitutoyo's next generation QM-Height digital height gage line offers a best-in-class accuracy of 4.5 µm and significant improve... Read News
7 Mahr Federal to Display Portable Air Gages (May 14, 2013)
Mahr Federal will be featuring the new Micro-Dimensionair II, the next generation of its well-established Micro-Dimensionair line of port... Read News
8 Mahr Federal Promotes Air Gages at Eastec (April 4, 2013)
Mahr Federal will be featuring the new Micro-Dimensionair II, the next generation of its Micro-Dimensionair line of portable air gages, a... Read News
9 Marposs Gages Go Wireless (April 20, 2006)
Marposs Corp. introduced its M1 Wave wireless electronic bore gages at IMTS. "Marposs has cut the cord," said product manager Bob Harm... Read News
10 Rush Gears Introduces Gear Gages (April 19, 2006)
Rush Gears is introducing a new line of gear gages with standard diametral pitch sets coming with 3, 4, 6, 8, 10, 12, 16, 20, 24, 32, and... Read News