“Once you get a customer in front of the Swiss machine and remove the guide bushing they can see that you’re pro- cessing the part just like a lathe. In a gang-style machine, the tool is moved into position rather than a turret indexing. A tool indexes into position and you still go around with the same axes as a lathe with a Y axis. Tooling is arranged according to standards. Turning tools have a standard projection length, but they can be set with a small set gage, or there are features on the machine that allow you to set them right off the bar stock diameter. Everything is on a standard tool-point plane so that if all the tools are set the same, they have a zero offset, enabling the tools to be set very quickly,” said Gainer.
More Small Parts than Meet the Bushing “Traditional Swiss is only one part of small-parts machin- ing,” said Willie Eichele of the Ganesh Technical Center (Cuyahoga Falls, OH), which will provide complex turnkey and automation systems for Ganesh CNC automatic lathes. “When you say Swiss machining everybody wants to assume the utilization of guide bushings, but on the Ganesh Cyclone CS32 machine we’re sliding headstock we’re not Swiss. We don’t utilize a guide bushing. We typically feed the part out to length from the bar and then the headstock slides back and forth providing the Z1 axis. With traditional Swiss machinining your collet or clamping device is located behind the bushing and you’re basically pushing and pulling your barstock through the bushing so there’s a difference,” said Eichele. For long slender parts traditional Swiss machining with a guide bushing is absolutely a must, because you are bringing your cutting tool right up to the bushing providing the added support required for long slender parts. That said, Ganesh doesn’t build a bushing-style Swiss machine If you go back 10 years or so, people started buying Swiss machines, because they have small work envelopes and gang tooling making them very fast acting. Twin-spindle machines that can drop parts off complete very quickly, the Swiss with the bushing was the only thing out there that could give them a fast cycle time. Today, most of the parts out there in screw machine shops don't have the length versus diameter ratios that require the bushing approach. They’re parts that can support themselves and can be machined complete without a guide bushing,” said Eichele. “So then everybody backed up and said let’s take the Swiss-
designed machine with that small compact work envelope, use gang tools, get everything really tight in there so we can make
May 2013 |
ManufacturingEngineeringMedia.com 59
speaks “Swiss”
Carmex offers an extensive line of tooling for operations on Swiss-type machines
As small-sized parts are becoming more common, manufacturers are discovering the advantages of Swiss-type machines:
• Our extensive experience in thread cutting makes Carmex the preferred choice for high production, quality finish, and long tool life.
• From our “Tiny Tools” line, to Grooving tools, Mini Chamfer, Mini Mill-Thread, and Thread Whirling tools, Carmex delivers the quality — and expertise — to maximize production.
When it comes to precision, production and customer support, Carmex speaks your language.
Visit our website or contact us today for a copy of our “Swiss Tools” catalog.
262-628-5030 or 888-628-5030
sales@carmexusa.com www.carmexusa.com
See us at EASTEC Booth #5259
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