Mapping the path to successful device design

Since the onset of the corona crisis at the latest, the pharmaceutical industry and laboratories have been under pressure to achieve the highest possible levels of automation – from new analytical and test devices to production lines and systems. filling/packaging. This efficiency depends on the level of automation, and miniaturized axes and linear motor modules for single and multi-axis applications open up new possibilities. Designed as a modular system, they are suitable for a wide range of tasks in laboratory automation and the pharmaceutical industry. They are driven by FAULHABER linear motors.

© Faulhaber | http://www.faulhaber.com

QuickLab QM02 Linear Motor Modules

The engineers from Jung Antriebstechnik u. Automation GmbH JA² has responded to the calls of the pharmaceutical industry, the analytical sector and the medical technology industry for small but functional automation solutions with the development of a new modular mechatronic system called QuickLab. With the small QM02 linear motor modules for a stroke of up to 160 mm and the QA02 linear motor axes for strokes of up to 220 mm, short-stroke applications can be realized with high dynamics and precision. Thanks to the mechanical construction and the precision guides in combination with two ball carriages, the modules and axes are very rigid and offer a high repeatability during positioning of ± 50 µm despite their lightweight construction and low moving mass. Depending on the load, travel speeds of up to 3 m/s and accelerations of up to 50 m/s² are possible. Axes and modules can be individually combined with each other, enabling pick-and-place applications as well as automatic solutions for separating, grouping, testing or spreading samples or other sensitive products. With a width of 22 mm, QuickLab perfectly covers the need for miniaturized single- and multi-axis handling systems. In addition, suitable accessories such as weight force compensation, magnetic holding brakes, external position sensors and adapter plates are offered.

© Faulhaber | http://www.faulhaber.com

QuickLab QM02 Linear Motor Modules

High dynamics and precision
“Linear motors are the heart of our modular automation system and the demands placed on them are very high”, explains Wilhelm Jung, Managing Director of JA². “The motors must operate very dynamically, be precisely controllable and have suitable dimensions. Linear motors from FAULHABER convince here with their innovative operating principle, which differs from conventional solutions.”

Linear motors can be constructed in several different ways because all of the principles of rotary electric motors can generally be implemented in linear motors by mapping the round air gap to a straight line. To do this, the initially circularly arranged electrical excitation windings are mapped on a flat path. The magnetic field then pulls the rotor onto the path of travel. However, there are still other possibilities: The LM2070 DC linear drives are not constructed as surface rotors with carriage and guide. Instead, the force rod is guided in a self-supporting three-phase coil.

“This design produces an exceptionally good relationship between linear force and current and high dynamics. Additionally, there are no cogging torques, making the linear motors ideal for use in our QuickLab modular system “, says Jung.

Maximum performance in the smallest dimensions
LM2070 linear motors are available with stroke lengths from 40mm to 220mm. Despite the compact stator dimensions of 20mm x 20mm x 70mm (W x H x L), the small linear DC servo motor has impressive mechanical performance indicators. The continuous force is 9.2 N and up to 28 N maximum force is available. The robust slide bearing of the force rod handles high speeds up to 3 m/s without problems. At the same time, the small power plant can be controlled very precisely. Already with the integrated Hall sensors, the absolute positioning accuracy is ±0.1 mm and the repeatability is ±50 µm. With an optional external sensor, these figures can be improved to ±0.01mm and a repeatability of ±1µm. Added to this is virtually maintenance-free operation, as the motor has no moving wear parts. In addition, the linear drive operates almost noiselessly. “This is important especially if personnel and handling systems work in the same room, as is often the case in laboratories,” adds Jung.

Drag chain cable connection
An important point for handling systems is the connection technology. Linear motors are normally delivered with a max. 30 cm long cable connection. In automation systems, however, the electrical cabinet is usually some distance from the actual drive.

“Between the motor and the controller in the separate electrical cabinet, there can then be 10, 20 meters or more,” says Jung.

With the QuickLab modular system, there is therefore a special multi-shielded cable that transfers motor power and the position sensor signal between motor and controller without interference up to 30 m. It is attached with a cover directly to the motor with strain relief, can be plugged in and is also designed for use with energy chains, i.e. for mobile use. Single-cable technology simplifies installation by prefabricating both ends.

The tailor-made mechatronics kit for laboratory automation has already proven itself in practice.

“Many manufacturers and suppliers of analytical accessories now rely on our systems. The demand is currently enormous, including in other areas such as optics and test technology”, says Jung.

Always present as a driving force: the small, powerful linear drives LM2070.

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