ME September 2014

“Toolpaths with Dynamic Motion Technology are ridiculously fast to write,” said Granatowski.

with the tool, toolholder and confined part features. Optimized Material Removal: Mastercam’s Dynamic Mo-

tion technology is allowing Granatowski to remove material about 25% faster. Sweet Spot for Speed and Tool Wear: He has done quite a bit

of experimenting to find the Sweet Spot where both material and tool life are optimal. “I tried to run it all the way up to the red light. Material removal was great but tool life was not. So I backed off about 10% and got two to three times the tool life.” Faster Programming: With Dynamic Motion technology

it is taking a lot less time to write CNC programs. He said, “Compared to my other system the toolpaths with Dynamic Motion are ridiculously fast to write. My old soſtware required me to make numerous, time-consuming decisions while programming. Tis soſtware already knows what it wants to do—and does it better.”

Rewriting the Past Job shops usually don’t go back and reprogram parts for

which programs have already been written. However that is exactly what Granatowski is doing for some repeat jobs. He said, “Tere is a monthly project I receive from this one company and I know the times on it. I have been able to

knock 15–20% of the machining time, increase the tool life by 30–40%. For a small shop, that is a huge savings.” It used to take him two-and-a-half days to fulfill this order

for 20 each of eight part numbers. Te customer was always in a hurry to get these and would sometimes call as Grana- towski was finishing up to ask if it would be all right to send a driver over to pick them up. He had reprogrammed six of the eight parts to incorporate Dynamic Motion technology when the next order arrived. Tis time the order only took a day and a half to complete. Te improvement was not lost on his customer. Tat month he sent five more parts from the same family because he knew Granatowski could get them up on his equipment and manufactured quickly. Granatowski said it is still very likely that he will continue

to work six and seven days a week for the foreseeable future. However, his new equipment and soſtware have more than doubled his capacity while reducing his costs. If his work volume grows into his new-found capacity, he will be able to bring on an employee soon. ✈

This feature edited by Yearbook Editor Michael Anderson from information provided by Mastercam.

Aerospace & Defense Manufacturing 2014 59

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