Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.
Issue link: https://mms.epubxp.com/i/802599
BETTER PRODUCTION Shops Using Technology 116 MMS April 2017 mmsonline.com two versions of a toolholder made from a heavy, dense material with added tungsten: one using a C-lock hole-clamping style for confined machin- ing operations and the other using a pin-lock- and-clamp st yle for general and heav y-dut y applications. Toolholding also had a profound effect on the part's blind-hole threading operations. Initially, a CBN-tipped drill and a standard carbide thread mill were used to create the threaded holes. Using this approach, the shop could produce two or sometimes three complete threaded holes. "Then we decided to put the thread mill in a shrink-fit toolholder," Mr. Halas explains. "Doing so increased its the output to approximately eight holes, but the drill still only lasted for maybe three holes. This was when we incorporated circular interpo- lation to instead hard-mill the holes, which deliv- ered three times the tool life compared to the drill." The diameter of the circular-interpolated milled hole was approximately 0.2 inch. The tool used was a standard solid-carbide Jabro end mill in a shrink-fit toolholder. According to Seco, once the shop realized all that was achieved with the hardened part, it had the toolmaker evaluate many of its other machin- ing operations, asking Seco to identify other parts and operations that could be optimized through tooling changes and/or tweaks. At peak periods of demand, the shop now machines thousands of the hardened parts per year, Seco says. " T h e r e w a s r e a l l y n o t h i n g n e w, to o l i n g - technology-wise, involved with this project," Mr. Eller says. "CBN has been around for a long time, as has carbide. But what was key to the project's success was that we evaluated the whole part process. We went from the beginning all the way to the end and developed the tooling that would optimize all aspects and enable the shop to achieve its machining goals." The new master of speed � KR AGILUS series When it comes to handling tasks, the KR AGILUS offers impressive results combined with minimzed cycle times. At the same time, the speed and accuracy make the performance of this small robot family unique in its payload ca category. Available in 6 and 10 kg payloads with an available reach of 700, 900, and 1,100 mm. kukainfo@kukarobotics.com 1-800-459-6691 This CBN-tipped trapezoidal insert was designed to offer toughness, wear resistance and long tool life. It is said to have reduced threading cycle time for the hardened part by 33 percent.