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Archive for February 28th, 2013

Mastercam Swiss Expert: Programming for Highly Precise Turned Parts

Thursday, February 28th, 2013

When it comes to machining, Swiss-style is quite a different animal because of the degree of precision and pace the process it is expected to maintain. Swiss-style lathes and turning centers provide extreme accuracy, capable of holding tolerances as small as ten thousandths of an inch.

A Swiss-style lathe holds the workpiece with both a collet and a guide bushing and is almost always used under CNC control. The collet sits behind the guide bushing, and the cutting tools are located in front of the guide bushing, holding stationary on the Z axis. To cut lengthwise along a part, the tools move in and the material itself moves back and forth along the Z axis. This allows all the work to be done on the material near the guide bushing where it is more rigid with little chance of deflection or vibration.

Swiss-style lathes and turning center are very efficient, as these machines are capable of fast cycle times, producing simple parts in one cycle with no need for a second machine to finish the part with secondary operations. This makes the Swiss style ideal for large production runs of small-diameter parts.

Additionally, as many Swiss lathes incorporate a secondary spindle, or sub-spindle, they also incorporate “live” tooling. Live tools are rotary cutting tools that are powered by a small motor independent of the spindle motor(s). Live tools increase the intricacy of components that can be manufactured by a Swiss lathe.

Spatial Corp. recently joined CNC Software Inc. in announcing that the 3D ACIS Modeler and 3D InterOp power the latest release of Mastercam Swiss Expert 2012. Designed to control a variety of Swiss-style NC machines, Mastercam Swiss Expert is used in a range of applications such as watch-making, medical device, dental, automotive, and electronics companies — all known for requiring extremely small, but very precise parts.

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