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Portable Coordinate Metrology for Large Cast Part Machining

Machining large parts, especially castings, is not for everyone.  The generalization ‘parts are parts’ does not apply in this case.  To be proficient requires commitment to constant process improvement, equipment evaluation and investment.  And to top it off, mistakes are very expensive. There are unique challenges associated with machining large parts, today.  Customers are demanding ever tighter tolerances, parts are large, heavy and quite often castings.  Increasing quality and efficiency is a tall order – how can you do both?  TCI Precision Metals approached  the challenge by analyzing variables of the machining process th...

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Inspecting Complex Profiles

Using metrology software and a portable CMM, mold manufacturers can efficiently handle exceedingly complex surface profile requirements.More than ever moldmakers are pressed to push the envelope on what is feasible and reasonable when it comes to accurately creating complex profiles. Companies today are heavily vested in each new product they bring to market. And good is not good enough. Manufacturing specs are often riddled with GD&T (Geometric Dimensioning & Tolerances) annotations that must be met and reported on in first article parts. For a customer-centric brand these requirements are by no means un...

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Powering Up an Age Old Design

Reverse Engineering Helps Power Companies Generate Up To 15% More PowerVerisurf Software helps power companies reverse engineer steam turbine rotor assemblies to support new and improved bladding. Southern California Edison, GE, Alstom, Siemens, Mitsubishi and Toshiba have all used Verisurf Software to create "as built" CAD models of existing rotor assemblies. Why go to all that trouble you might ask? After 130 years, steam turbines are still a wonderful and powerful design generating approximately 90% of the electrical power in the United States.  Most of the steam turbine power plants in use today around the world were built over 60 years ago, long before CAD ...

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Scan It, Build It

When Gabe Draguicevich was asked to help fabricate a titanium hip implant based on CT (computed tomography, also known as CAT) scan data, he had to coordinate numerous technologies to complete the project. Because the CT data consisted of 2-D cross-sections, Draguicevich had to stack and align the individual scans to create a 3-D model, which he used to create a polygonal mesh in the form of a stereolithography (STL) file. After creating a prototype, he had to verify it against the original scan data, which was no mean feat considering that software capable of providing deviation analysis of the model surface to the STL file did not exist. Finally, Draguic...

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