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Machining 30 MoldMaking Technology August 2015 Cycle geometries for standard operations such as turning shoulders, thread undercuts and trapezoidal grooves can be assigned in a similar way. Since these turning cycles can be used in all workpiece quadrants, even the machining of inside contours becomes simpler and more predictable. And all of these cycles can be applied to a counter spindle without any restrictions, because the programming can be automatically recalculated by the control without requiring a new program. Hold on though, it gets better. These cycles are not limited, by any means, to creating standard geometries. They can be used to produce any type of contour or pocket with islands, even with rotating tools on machines. What applies to the milling contours can also be done with rotating turn tools by using a recently developed contour stock removal cycle. Given a defined pocket, side- wall or contour, the stock removal process can be executed in a faster, more efficient manner, prior to slowdown of the machine for first and finish passes. This type of cycle facilitates not only the typical longitudinal and face-cutting operations, but also con- tour machining with recess or plunge- turning tools. Complex contours can be generated on the more sophisticated CNC because of this processor geometry, and partially defined contour elements are calculated automatically. Rather than a new cut- ting path being generated in code, the CNC stores a series of program steps and allows a simple cut-and-paste action when building the program for a multi- cavity but identical mold pattern. In addition, a simplified CAD reader can be installed onto a PC to convert DFX files into the proper geometric lan- guage for the CNC. The part program is built up for the mold with automatic step-and-repeat functions that allow considerable reduction in programming time when all the cavities have the same shape, although different orientation, to the cutter path. Lastly, sophisticated CNCs enable cutting on a swiveling a plane, whereby the desired coordinate rotation is pro- grammed and the CNC automatically orients the machining to the proper LEFT: This partially defned turned contour element can be automatically calculated and executed (including allowance for residual grinding stock) with an integrated processor geometry on a CNC. RIGHT: An advanced CNC's contour calculator enables all face-cutting and plunge-turning tools used for this milled contour pocket to be programmed with less effort and high reliability. Your mold doesn't have this label Get trial samples at www.SlideProducts.com 1-800-323-6433 ©2012 Slide Products Inc. Mold Cleaner Plus Degreaser 4 cleans fast, evaporates fast, so you are in production fast. And without chlorinated solvents. It's our #1 mold cleaner. Try what everyone else is using. Get a free trial sample at www.slideproducts.com