Techspex

AUG 2018

Techspex provides metalworkers free research and analysis tools to help them find the right machine for their job.

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techspex.com | The Machine Tool Search Engine 7 Almost all CMMs will be fully integrated into the manufacturing process as manufacturing companies continue to demand in-line measurements for immediate feedback. This will enable timely, in-line adjustments to eliminate scrap and improve quality. part will also load the part onto the CMM and push the button. Simplicity and ease of use will be required for this integration. Developments advancing this trend include color mapping to show where a workpiece is in or out of tolerance. Easy-to-read reports will be the norm. Because machine operators are not metrologists, the information from the CMM must be displayed in easy-to-understand reports. Systems capable of performing measurements at different stages throughout the process without human intervention are emerging, and manufacturing processes will self-correct based on these automated measurements. Industry 4.0 Quality control is often approached as a reactive function. In other words, if a part is found to be out of tolerance, the only option is to retrace prior steps to find the cause and fix it. However, this approach has been likened to driving a car forward using only the rear-view mirror to steer by. Manufacturing must move from a reactive to a planned and then to a proactive approach. This is far more difficult than one would expect. The final step of achieving a predictive approach is even more difficult, but progress is underway. In the emerging world of Industry 4.0, metrology data from CMMs is likely to play a key role. High-performance, high-output manufacturing relies on control and predictive action through the active use of measurement data. CMMs are ideal tools for providing data that flows through the business via factory information systems. This will enable ultimate control across the entire manufacturing process. The demand for higher quality and greater consistency of parts can't be met unless tools such as CMMs improve in capability, speed, accuracy and throughput. With the increasing versatility of CMMs and advances in sensor technology, along with more automation, CMMs will become an ever more essential part of the overall process. For example, CMMs are likely to be used to digitize objects so this data can become part of the digital thread that is unifying the supply chain. CMMs Add Value When inspecting parts with simple holes for which location and diameter are most important, a touch-trigger probe will be most appropriate for the job. Parts requiring form, best fit or true position calculations will require a scanning probe to capture adequate data for analysis. 3D scanning for modeling, reverse engineering or comparing to the CAD file are functions easily done on a CMM. Deciding which sensor to use is often determined by the required part accuracy and speed. If you're manufacturing aerospace turbine blades, for example, five-axis scanners or 3D non-contact laser scanners will perform the work far more quickly and with less programming than touch-trigger probes. Fixed-head camera sensors, which are new to the market, are supposedly capable of

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