Modern Machine Shop

SEP 2018

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MMS SEPTEMBER 2018 94 CAD/CAM usually remain along the edges of cured parts. In the past, manual trimming resulted in significant labor input, not only for the trimming operations, but also later in assembly because manually trimmed components are less accurate and more difficult to fit with mating parts. Mr. Bowman explains that with the plug-in, a programmer can go around a part model and click on the edges to be trimmed. Because the software has solid-model "awareness," it can tie the selected edges together to form a continuous tool path. The cutting tool can bypass the edges not included and move to the next set of edges for trimming. To run a trimming program, a simple fixture supports the part on the bed of the machine with access to all trimmable edges. He reports that today, Flying S can machine a complex, unmanned aerial vehicle (UAV) flight component out of carbon fiber and have it fit a part made several years ago perfectly. Hiring Safely Most business owners will admit that one of the toughest challenges is finding and hiring the right kind of people for the workforce. Mr. Shaw says that Flying S is no exception to facing this challenge. One of the main reasons Flying S has been able to find and develop a capable and loyal workforce is that Vincennes University is nearby. The university is part of the 2,200-school Haas Technical Education Center (HTEC) Network, which Mr. Shaw describes as "an industry- and education-led initiative that promotes excellence in education on CNC machine tools and related CNC ancillary equip- ment, software and educational materials." This program has been a source for many of the shop's programmer/machinists. This connection to Vincennes University is espe- cially strong because of the link between Flying S's Peter Bowman and his father, Doug Bowman, HTEC director for Vincennes University in Southwest Indiana. He has been with the school's Business and Industry HTEC center since its establishment in 2011. Prior to that, Mr. Bowman spent 26 years as the lead CNC instructor in the university's School of Technology. He oversees all programs in the department, including Right Skills Now – CNC Machining, HTEC teacher training and incumbent worker training. First offered in 2013, Right Skills Now – CNC Machining was established to fill the need for skilled CNC machinists, as well as to help unem- ployed veterans get on their feet and back into the workforce. It is a combination of about 25 percent machining theory and 75 percent hands-on training for eight hours per day, five days per week, for 15 weeks. Mr. Bowman has been using Mastercam in his classrooms and labs since 1997 because he saw it as the most widely used CAD/CAM system in industry. Students first learn the basics of Jake Blankenbeker inspects an aerospace component in a fixture that was created using a 3D-printed version of this part. The shop uses this articulated arm with a touch-trigger probe to collect data points that complete the measurement. This arm (Master3DGage) and other CMMs follow programs created in Mastercam, thus keeping inspection in the same CAD/CAM environment as part modeling and CNC programming.

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