Production Machining

AUG 2018

Production Machining - Your access to the precision machining industrial buyer.

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productionmachining.com :: 43 Continuous Production Doubles Shop's Output FANUC 32i-B control system, revolving guide bushing, removable guide bushing for short parts, part catcher, part conveyor, chip conveyor and a cart. As well, Swistek recommended a Hydromat Edge Technologies Scout 320—an automatic magazine-style bar feeder designed for feeding round, square and hexagonal barstock in lengths up to 12 feet, with a diameter range of 3 to 27 mm. e machine was installed by Swistek in December and was up and running by early January. Swistek shipped it to AMC, which then rigged the machine in GLT's machine shop. en Swistek sent a technician in who spent a week with GLT setting up the CNC, programming it and training the supervisor. "It's a little bit of a different animal than what we're used to, machining-wise," Mr. Heggs says. "e technician was very thorough, though, and Swistek has been a great support since. Whenever we call or email them, they get back to us right away." Now GLT is running continuous production, making 1,000 parts across the two shifts. e bar feeder loads full- length, 12-foot bars in, and after every cycle the machine cuts them down. "It comes in and does the front side, pulls the part, parts it, and then while it's doing the front side, it does the back side too, and then ejects the part," Mr. Heggs says. Consequently, continuous production has completely eliminated the outside saw operation. Any new addition like this isn't necessarily seamless. "ere have been some growing pains," Mr. Heggs says. One issue GLT had to get used to is tooling life. e way the Swistek operates, even if a cut-off tool breaks, the bar feeder will continue to feed the machine. When the tool moves aside, this can bend the bar into an S shape, which :: Previously, an operator would manually feed bars into the turning center all shift long, but with the Swistek, he only has to return to the machine once an hour to check on it, take the parts out, wipe them off and place them in the bin. :: Full-length, 12-foot bars can be loaded into the Swistek, and after every cycle, the machine cuts them down, and then drops the parts into the part catcher. has resulted in more than a few destroyed collets. GLT has, however, been able to adapt. "We get about 5,000 parts per insert, so every 4,000 parts we change all our inserts to try to avoid that," Mr. Heggs says. GLT hopes this transition away from batch production into continuous production is the start of a new direction for the shop. It has mostly been doing short-run production, with 500-1,000 pieces as the norm, but Mr. Heggs hopes to expand to more long-run production. "We're going to do as much bar feed as we can and are looking into implementing robotics," Mr. Heggs says. But the company is doing a lot of both milling and turning, so it is looking into mill-turns and has also explored additive manufacturing, having taken seminars at the University of Dayton. "We're always looking to eliminate operations," Mr. Heggs says. "e less time a part is handled, the less often it can be loaded incorrectly." GLT Inc. | 937-237-0055 | gltonline.com. Advanced Machinery Companies | 937-278-7337 advancedmachinery.com Swistek Machinery America | 203-301-4848 | swistek.com Here's another article on this topic: Choosing an Automatic Bar Feeder e bar feeder is the most common form of automation for turning operations, and the right bar feeder for a given application can provide a number of benefits. LINK :: short.productionmachining.com/bar-feeder

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