Modern Machine Shop

DEC 2018

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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Page 65 of 115

MMS DECEMBER 2018 64 WORKHOLDING The Fixture Niche Oddly shaped parts that require custom fixtures are a particular specialty for this CNC machine shop. Here are a few principles it follows for effective fixture design. Some machine shops take on work that does not necessarily jibe with their capabilities. That is not the case for Contour Precision Milling & Machin- ing. Instead, this Northeast Ohio shop has chosen a particularly specific niche: low-volume, repeat jobs involving non-round, non-square milled components, particularly castings and forgings. Although this oddly shaped work requires sub- stantial planning and problem solving to develop an effective machining strategy, the shop's exten- sive engineering capacity and expertise in design- ing and building custom fixtures enable it to excel at milling these types of challenging parts on equipment including pallet-fed horizontal machining centers and five-axis machines. Designing and building its own workholding devices is one of the most import- ant ways Contour Precision helps customers get products to market fast. These tasks fall largely to people such as plant manager Brian Whitt, who started as the shop's first apprentice more than 20 years ago, and engineering manager Mike Kerecz, a nine-year industry veteran. The fixtures they make for castings, forgings and other Contour Precision Milling & Machining specializes in oddly shaped, difficult-to- machine milled parts, many of which require custom fixturing. In this example, tilting the five-axis machine's table provides access to features such as the angled bores on either end of the part. | MATT DANFORD | SENIOR EDITOR

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