Test & measurement Process
precision How motorised equipment aids testing and control in manufacturing
PWC’s UK Manufacturing Operations Pulse Survey 2021 found almost half of UK manufacturers are prioritising robotic process automation over the next two years. Automated equipment can perform to exact requirements, making it inherently advantageous in testing and control. Here Dave Walsha, sales manager at drive system supplier EMS, looks at how reliable, high performance micromotors are achieving process precision.
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evelopments in robotics have allowed automated equipment to become increasingly sophisticated, performing tasks with superior speed and
accuracy. For instance, a hospital in Oxford found a surgical robot could perform an eye surgery with ten times more precision than a human surgeon alone. However, it is not just the medical sector that can capitalise on the high accuracy of automated machines - manufacturers can reap the benefits too.
KEEPing COntrOl Manufacturers who adopt automated production lines gain a high level of control over the assembly process, which minimises waste from defected goods and ensures customers consistently receive a high quality product. These benefits have contributed to the record high of 2.7 million industrial robots operating in factories around the world in 2020. Automated equipment can be digitally
programmed to perform tasks to exact measurements, demonstrating repeatability that is unmatched by human workers. For instance, when properly calibrated, it is possible for a six- axis industrial robot to achieve a position repeatability of 0.1mm or better. There are a number of production stages that can benefit from the precision of
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automated equipment. For example, a torque controlled power screwdriver ensures each screw in the workpiece is turned to the exact same level of tightness, avoiding loose or over- tightened screws. In addition, an automated dosing pump can
supply the exact amount of materials, such as adhesives, lubricants or sealants, required to the target product area. As well as preventing waste and avoiding contamination of other product parts, being able to supply precise amounts helps meet the miniaturisation trend, aiding the assembly of products with ever decreasing sizes.
MEtiCUlOUS tESting However, the benefits of precise automated equipment are not restricted to product manufacturing, they are also advantageous in testing. For example, an automated testing rig with a motorised locking mechanism can hold a product in place while it is subjected to different tests. One of these tests could be scanning the product for defects, such as missing screws, damage or incorrect dimensions, by moving the rig along a motorised conveyor belt to a vision system. Another assessment where automation is
beneficial is tensile testing, where the product is pulled and then monitored when it deforms or snaps to measure its resistance to breaking under tension. This is often used on metal alloys
to discover how they perform under different loads. Tensile testing devices may be used as part of a quality control system or during material research when developing new alloys. Not only would these testing tasks be highly
monotonous for human workers, but they would also take much longer to perform than an automated system. High performance motors can power an automated system to perform these mechanical tests repeatedly at a fast rate with no human intervention.
SUPErb MOtOr SyStEMS It is important that automated industrial equipment are matched with advanced motor systems that deliver reliable power. The FAULHABER brushless motors are ideal for automated systems, as they provide a long life with a wide speed range. They also have a range of compatible motion controllers that create an advanced, programmable drive system with easy and accurate control that is simple to integrate into an automated system. Many manufacturers are focusing on
automation in their future development plans. Motorised equipment bring high levels of accuracy and precision to production lines and testing facilities, ensuring only consistently high quality products reach customers.
EMS
ww.ems-limited.co.uk January 2022 Instrumentation Monthly
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