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Aluminum Molds In Three Weeks Or Less
10/13/2009 Modern Machine Shop

While aluminum molds are commonly used to create prototypes or to serve as stopgap bridge tooling, they are starting to receive greater attention for production work. This shop’s approach to creating aluminum molds in one day to three weeks is the same for each of these situations.

Straight to Sand
10/1/2009 Modern Machine Shop

Through direct CNC machining of molds and cores, this supplier of cast and machined parts skips the pattern-making step that would otherwise be fundamental to casting. The result is weeks of lead-time savings for complex parts that are needed in a hurry.

No Need For Speed
3/20/2008 Modern Machine Shop

In this shop, high speed machining makes sense at 4,000 rpm. While the disciplines the shop put in place made a new 15,000-rpm profiler dramatically more productive, high speed machining would have remained valuable even if the new machine never came. Acoording to a co-owner of this shop, high speed machining has no need for speed.

Five-Axis Machining Has Special Workholding Needs
9/13/2007 Modern Machine Shop

This clamping system allows a workpiece to be rigidly clamped while raised up from the surface of the worktable on a five-axis machining center. Moving the workpiece away from the table creates clearance for the spindle nose and cutting tool when the table swivels the workpiece for multi-sided machining, or when the spindle head rotates and swivels to do contouring or sculptured surfaces. Without this clearance, the user may be forced to refixture the part or to switch to a longer, less rigid tool.

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