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Banyan Technologies introduces a robotic chamfering device suitable for deburring, chamfering and radiusing the edges of slew bearing ring gears.
The chamfering and deburring operations on gear teeth have become more important as the automation of gear manufacturing lines in the automotive industry have steadily increased. Quieter gears require more accurate chamfers. This operation also translates into significant coast savings by avoiding costly rework operations. This article discusses the different types of chamfers on gear teeth and outlines manufacturing methods and guidelines to determine chamfer sizes and angles for the product and process engineer.
In today's industrial marketplace, deburring and chamfering are no longer just a matter of cosmetics. The faster speeds at which transmissions run today demand that gear teeth mesh as smoothly and accurately as possible to prevent premature failure. The demand for quieter gears also requires tighter tolerances. New heat treating practices and other secondary gear operations have placed their own set of demands on manufacturers. Companies that can deburr or chamfer to these newer, more stringent specifications - and still keep costs in line - find themselves with a leg up on their competition.
Chamfering and deburring of cylindrical gears does not get much love from manufacturers. The process is seen as a necessary evil since it is adding cost without adding “value.” However, there are good reasons for not underrating this important auxiliary process. Chamfering and deburring takes care of several issues which may come up during the manufacture of quality gears.
The objective, according to Dr.- Ing. Hansjörg Geiser, head of development and design for gear machines at Liebherr, was to develop and design a combined turning and hobbing machine in which turning, drilling and hobbing work could be carried out in the same clamping arrangement as the hobbing of the gearings and the subsequent chamfering and deburring processes.
New tool from LMT-Fette provides combination of operations.
Could the tip chamfer that manufacturing people usually use on the tips of gear teeth be the cause of vibration in the gear set? The set in question is spur, of 2.25 DP, with 20 degrees pressure angle. The pinion has 14 teeth and the mating gear, 63 teeth. The pinion turns at 535 rpm maximum. Could a chamfer a little over 1/64" cause a vibration problem?
Several innovations have been introduced to the gear manufacturing industry in recent years. In the case of gear hobbing—the dry cutting technology and the ability to do it with powder-metallurgical HSS—might be two of the most impressive ones. And the technology is still moving forward. The aim of this article is to present recent developments in the field of gear hobbing in conjunction with the latest improvements regarding tool materials, process technology and process integration.
The seemingly simple process of placing a uniform chamfer on the face ends of spur and helical gears, at least for the aerospace industry, has never been a satisfactory or cost effective process.
Compass Automation unveiled its Robotic Deburring System at Gear Expo 2009.
News Items About chamfering
1 Arrow Gear and Motoman Robotics Offers Chamfering/Deburring Solutions (October 6, 2010)
PerfectEdge, a complete, full function robotic solution, meets the challenges of tight tolerance chamfering, deburring or finishing proce... Read News
2 End Mills Improve Chamfering Performance (June 6, 2011)
A new family of Iscar end mills extend the benefits of tangential Sumomill inserts to chamfering, countersinking and face milling. F... Read News
3 TecnoMacchine Deburring and Chamfering Machines Now Offered by Koepfer America (November 7, 2016)
Koepfer America has expanded its line of gear manufacturing solutions by partnering with TecnoMacchine. TecnoMacchine manufactures CNC de... Read News
4 EMAG VL 4 H Modular Hobbing Machine Combines Hobbing and Chamfering into Single Operation (November 18, 2016)
Koepfer has demonstrated its capabilities in a multitude of projects for a broad clientele. The company's gear cutting experts meet t... Read News