MachineBuilding.net Technical Articles Index
Achieving functional safety within drives without using encoders
What is the goal of functional safety? To minimise the risks posed by technical equipment to humans and the environment. Machine tools, for example, can endanger operators and technicians with tools that rotate at high speeds. Drive technology that ensures the required safety functions without encoders offers the user various advantages, says Mark Checkley of KEB.
How to choose the right process control valves
Modern process control valves offer a wide range of features and benefits for industries that require precise control over fluids, steam and other gases. With so many control valves on the market, it is important to establish the features that will deliver the most cost-effective design for a particular application. Damien Moran, Field Segment Manager, Hygienic – Pharmaceutical at Bürkert, looks at some of the basic differentiators as well as some recent design developments.
How to select bearings for extreme operating environments
Many engineers have at least a basic understanding of rotating bearing technology, and in some cases have become experts in the field as various projects have come and gone over the years. Not a few design engineers will have hands-on experience too, perhaps replacing wheel bearings on a car, or headstock bearings on a motorcycle. But what happens when the talk – and the project – turns to specifying bearings that must survive in a constant 473degC for 3 hours, and then continue to perform faultlessly as the temperature plummets to –219degC for another 3 hours? And for equipment which is going into in space, bearing materials must be well protected against corrosion, but why? What does one need to consider first? Materials technology? Rotating mass? Temperature capability? Lubrication? If your application involves – or might include at some stage in the future – a need to understand how to select and specify bearings that can survive in extremes of heat, cold, or space, bearing industry expert Mike Page of Carter Manufacturing Ltd provides a summarised oversight.
How to choose the right air compressor
Air compressors are valuable for industrial use, including powering pneumatic tools and pumping up tyres. But with so many models on the market, how can you make ensure you make the right decision for the application at hand? Direct Air has created an informative guide on how to make this decision: follow the link for full information and a helpful infographic on how a Hydrovane series rotary sliding vane air compressor works.
What is the best type of robot controller?
The current trend of robot control is changing with PLC-based systems offering different benefits and opportunities over the traditional dedicated robot controllers. So what needs to be considered when selecting the right option for the application? Barry Weller, Product Manager at Mitsubishi Electric, looks at how to determine which robot control option is best.
Ensuring surgical motors will withstand 500 sterilisation cycles
There are few industries that push the limits of engineering further than the manufacture of surgical power tools. Design engineers are constantly pushing the boundaries of ergonomics, precision, size and reliability in order to release the latest life-saving device onto the market. Fortunately, Portescap has launched a range of 15 new motors that are designed specifically for surgical applications.
Condition monitoring for predictive maintenance concepts
The system from Nord Drivesystems regularly or permanently records drive and status data in order to optimise the operational safety and efficiency of machines and plants. Based on this information, concepts for predictive maintenance can also be developed. Fast, efficient and comprehensive evaluation of analogue and digital data (measurements, signals and operating parameters) by the intelligent PLC in the drive electronics forms the basis.
Benefits of black oxide finish for rolling bearings
Black oxide finish has a long tradition. It forms a protective layer for steel parts. David Schaljo, head of application engineering with NKE in Steyr, Austria, explains the benefits and illustrates them with practical examples.