Power transmission shafts — on motors and gearboxes, for example — are subjected to torque loads that result in torsion, or twisting of the shaft about its axis. Similar to structures under tension or compression, two important mechanical properties … [Read More...]
FROM THE EDITORS
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Danielle Collins
Are brushed motors suitable for industrial applications? -
Lisa Eitel
Application example: Ladders on construction machinery use actuators for better ergonomics -
Miles Budimir
New linear rotary actuator features 35-mm stroke with 5-micron encoder -
Mike Santora
Linear, xy, rotary combination stages
Are brushed motors suitable for industrial applications?
Brushless motors dominate the industrial motion control market, but brushed motors still make sense for some applications, thanks to their linear performance and ease of use. DC motors can use … [Read More...]
Mechanical properties of materials: Shafts in torsion
Power transmission shafts — on motors and gearboxes, for example — are subjected to torque loads that result in torsion, or twisting of the shaft about its axis. Similar to structures under tension or … [Read More...]
Mechanical properties of materials: Stress and strain
Every component in a linear motion system experiences some form of loading due to applied forces or motion. The component's reactions to these loads are described by its mechanical properties. For … [Read More...]
Application example: Ladders on construction machinery use actuators for better ergonomics
90% of small U.S. construction companies have safety programs, but only a third have programs to improve the ergonomics of workers’ environments. It’s too bad, because the risk of musculoskeletal … [Read More...]
Electric actuators displace other motion options — including manual designs: A Motion Trends report
Today, electric actuators are easier than ever to specify and install. Value-add services from component suppliers as well as application-specific actuator product lines (especially for … [Read More...]
New technologies and applications for linear motors: A Motion Trends report
Depending on the exact technology, typical linear motors can deliver unlimited strokes and (with feedback) accuracies to ±1 μm/100 mm. Speeds range from inches to 1,000s of inches per second. … [Read More...]
Renishaw’s new easy-to-install incremental encoder
Renishaw has launched a new encoder family for linear axes, which offers exceptionally wide installation tolerances and axis speeds of up to 24 meters per second. The QUANTiC encoder series produces a … [Read More...]
Motion Trends: Stages, Cartesian robots, and tables for complete motion designs
New trends in multi-axis motion designs abound. Consider the rise of metrology reports to accompany designs — which serve as “birth certificates” in the form of well-informed simulation models and … [Read More...]
LINAK US launches new video series on linear-actuator technology
Now in a new Anatomy of Actuation video series, LINAK engineers help design engineers understand the features and technologies available with its actuator solutions. Two linear-motion experts — Hunter … [Read More...]
What is servo tuning and why is it important?
Unlike stepper motors, which rely on even pulses of current to turn the motor in discreet steps, servo motors operate with continuous current to reach a specified position, velocity, or torque. The … [Read More...]
Linear guide and slide systems
Welcome to this installment of MC² on linear guide and slide systems! Recall that these linear-motion supports take the form of guide rails, slides, and ways … and include profile rails, linear … [Read More...]
New linear rotary actuator features 35-mm stroke with 5-micron encoder
The LCR16 from SMAC Moving Coil Actuators provides precision Z-theta motion within one small actuator, which is suitable for pick, orient and place applications. A wide variety of LCR16 linear rotary … [Read More...]
How does closed-loop stepper control work? (And why not just use a servo?)
Stepper motors are inherently open-loop devices. They don’t require feedback because each pulse of current delivered by the drive equals one step of the motor (or a fraction of a step, in the case of … [Read More...]
One-piece ETX linear bearing/pillow blocks suitable for use in radioactive environments
LM76 now offers one piece ETX Linear Bearing/Pillow Blocks that will not degrade in a radioactive environment. Machined from a solid block of self-lubricating ETX, linear bearing blocks have high … [Read More...]
What is Abbé error and how does it affect linear systems?
When evaluating the accuracy of a linear motion system, the area of focus is often the positioning accuracy and repeatability of the drive mechanism. But there are many factors that contribute to the … [Read More...]
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