2nd Quarter 2015Electrical switching & drive systems & components
Tectra Automation recently supplied and integrated the drive components for bevel head servomotor-driven CNC plasma cutting tables manufactured by CNC Clear Cut in Pretoria. The Bosch Rexroth servo drive train, which interfaced with the CNC control through the Ethernet-based Sercos 3 communications protocol, provided enhanced cutting accuracy and throughput for superior three-dimensional metal profiles. Tectra Automation also integrated the drive train, including engineering, programming, coding and fine tuning. The servomotor requirements were sized according to the torque, speed and inertia specification of each machine cutting axis.
“The servo system with integrated Sercos 3 protocol improved machine output, by providing an instantaneous instruction relay between the CNC control and the servo system across Sercos 3,” explained Georg Venter, Tectra’s divisional manager, electric drives and controls. “Sercos 3 also provided a high immunity to electrical noise. Given the electrical nature of plasma generation, this was invaluable for attaining a more precise, higher quality plasma operation.”
CNC Clear Cut has now built two plasma tables utilising this servo system configuration. The first machine incorporated a sophisticated bevel cutting head, which allowed machinists to swivel the plasma arc for the cutting of precise three-dimensional cone profiles. This required two motors synchronised for the longitudinal axis; a single motor for the cross axis; a motor for the cutting torch height; and two motors for the control of the bevel action. Five planetary gearboxes were used with the servo motors. The second machine did not incorporate the bevel mechanism and was comprised of four servomotors requiring three planetary gearboxes.
Innovative separation of recyclable materials with PC-based control Beckhoff Automation
Electrical switching & drive systems & components
A plant built by Belgian specialist machine builder, Absolem Engineering features an innovative process for separating recyclable materials. Using PC-based control from Beckhoff, a major problem has been elegantly solved - the generation of different signal sequences for the exact synchronisation of different camera systems.
Read more...Understanding standby, prime and continuous gensets WEG Africa
Electrical switching & drive systems & components
The increasing reliance of South African businesses on generator sets to mitigate power disruptions highlights a crucial need for proper selection based on specific operational demands. Despite their growing usage, there is still widespread confusion about how to choose the appropriate genset, often leading to inefficient and costly decisions.
Read more...PC-based control for advanced hydrogen storage technology Beckhoff Automation
Editor's Choice Electrical switching & drive systems & components
The proportion of renewable energies from solar, wind and water is rising continuously. However, sufficient storage options are of the essence to use these energies as efficiently as possible. GKN Hydrogen offers a particularly compact and safe option, low-pressure metal hydride hydrogen storage systems with PC-based control from Beckhoff.
Read more...Axiom reaches new heights Axiom Hydraulics
Editor's Choice Electrical switching & drive systems & components
When Rula Bulk Handling could not source a cable tensioner large enough for a new cableway, the engineers knew they had to come up with an inventive solution. After discovering that no such tensioner was immediately available, Rula approached Axiom Hydraulics and ifm to assist with building their own.
Read more...Local range of planetary units SEW-EURODRIVE
Electrical switching & drive systems & components
As SEW-EURODRIVE South Africa actively extends its offerings to customers, the SEW PPK and SEW P2.e industrial gearbox ranges are good examples of solutions that are well suited to the local business environment.
Read more...At least 60 million strokes Horne Technologies
Editor's Choice Electrical switching & drive systems & components
Designing and constructing compact automation systems is one of the core activities of the Austrian machine manufacturer, STIWA. Its modular LTM-CI system has been optimised for small parts assembly. Linear and rotating micromotors from Faulhaber perform key tasks in these systems.
Read more...Innovative five-axis laser precession scanner
Electrical switching & drive systems & components
Motion control specialist, Aerotech has launched the AGV5D, an innovative five-axis laser precession scanner specially developed for laser micromachining. This makes it possible to create high-precision bores, contoured slots and other complex geometries with dimensional tolerances in the sub-micrometre range.
Read more...Minetruck with electric drivetrain combines power and innovation
Electrical switching & drive systems & components
The new Minetruck MT66 S eDrive is the first of Epiroc’s large-capacity mine trucks to feature the latest generation electric drivetrain. Along with an upgraded and powerful diesel engine, the hauler combines the cost-effectiveness of a traditional mine truck with the productivity of an electric one, without requiring changes to a mine’s infrastructure.
Read more...Modular hydraulic control blocks for brake actuation
Electrical switching & drive systems & components
Electrohydraulic brake release valves are exposed to extreme loads, and can become uncontrollable in the event of a power failure. The experts at WEBER-HYDRAULIK GMBH have developed a practical, modular solution that ensures the safety of construction machinery, and is also suitable for a wide range of other vehicles with hydrostatic drive systems.
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