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Burrs, sharp edges, and rough surfaces plague even the most precise metal-cutting or forming process. Deburring and finishing can often be treated as the step-child of a manufacturing process, but its importance is growing as tolerances get tighter and precision devices become the norm.

Why use a metrology device on or near a machine tool? It isn’t just useful for making sure a tool is present or monitoring tools for wear or breakage. On-machine measurement technologies can save time and money, by speeding up processes and eliminating extra personnel, and they are a critical step in the movement towards “lights-out” manufacturing.

Micro components continue to shrink in size, demanding ever-greater precision and improved handling of parts with sub-micron-sized features. New approaches in micro machining technology include higher-precision systems from traditional micro machining developers, as well as techniques using additive manufacturing processes and semiconductor wafer-scale technology on the smallest of micro parts.

Until the middle of 2010, first-tier subcontract machinist, JJ Churchill, could produce turbine blades only if they had their fir-tree root-forms preground elsewhere, or if they were subsequently added by another subcontractor. No longer is this the case.

Because it is a production cost, reducing the need for deburring can help the bottom line. In this podcast, part two of two, Alan Rooks, Editor in Chief of Manufacturing Engineering magazine, talks with Dr. LaRoux Gillespie, a researcher, engineer, manager, consultant, and writer with an extensive knowledge base on deburring and finishing. In this episode, the discussion focuses on ways to reduce deburring costs in forming and fabrication operations, such as improving product design; preventing burrs; minimizing burr properties; and removing burrs during the main fab process. Also discussed are how shops can determine if deburring or edge finishing is needed, and how they can choose among the 124 different deburring processes.

“Metrology and its relationship to manufacturing is rapidly evolving,” Ken Woodbine, president, Wilcox Associates, a brand of Hexagon Metrology (North Kingstown, RI), recently observed. “We are seeing larger quantities and faster speeds of measurement data collection. The next challenge is what to do with all that data.”

VMCs have had a productive past, present and the future looks promising

Modern manufacturing is rapidly adopting model-based definition (MBD). When employing an MBD strategy, the CAD model becomes more than the nominal to which all parts are measured and inspected against. MBD keeps the all-important digital thread intact—from design to manufacturing to inspection and quality reporting.

Five-axis machining, once a novel and somewhat forbidding technology, has become routine in many shops. Meanwhile, some organizations are still hesitant to use it, largely due to programming concerns.

In Donald, Ore., 24 miles south of Portland, GK Machine Company Inc., is manufacturing parts for heavy agricultural equipment such as harvesters, sprayers, tree diggers, and hose reels.