PI’s new comprehensive piezo motor solutions catalog covers a large number of linear, rotary, and multi-axis motion systems based on a variety of piezo motor types along with their appropriate controllers and drivers. Piezo motors have excellent dynamic properties, such as high acceleration and fast start/stop behavior, along with nanometer precision and stability. In contrast […]
What’s the difference between serial kinematics and parallel kinematics in multi-axis motion design?
Today’s positioning tables and stages include hardware and software that’s more customized than ever to satisfy specific output requirements. That’s made for motion designs that move accurately through even complicated multi-axis commands. Precision feedback is key to such functionality — often taking the form of optical or (electronics-augmented) magnetic encoders for nanometer-scale resolution and repeatability […]
Voice coil motor features internal shaft and bearing, high force-to-size ratio
Moticont’s new GVCM-051-089-05S06 linear voice coil motor features high speed, high acceleration/deceleration, zero backlash, high accuracy, high repeatability, and an internal shaft and bearing. This compact, voice coil motor has a high force-to-size ratio with 5.5 lb (24.6 N) continuous force and 17.5 lb (77.7 N) of peak force with a housing measuring just 2.000 […]
Shape-memory alloys linear actuators: A new option for positioning
Now, one new actuator uses bundles of SMA wire made of specialty nickel-titanium alloy for reliable linear motion. Dean Pick, P.Eng. • President | Kinitics Automation Shape-memory alloys (SMAs) are those materials that respond to temperature changes by changing form factor. Originally funded by the U.S. Navy, SMA technologies were first commercialized by Raychem Corp. […]
High-torque rotary voice coil actuators from H2W
H2W Technologies has developed several high-torque rotary voice coil actuators, otherwise known as a limited angle torque motors or LATs. The model TWR-015-346-2RC was designed to allow for a low moving mass (68 g per coil) and inertia, as well as dual independent coils to allow for two independent motion profiles or couple the coils […]
Linear motion applications for piezo actuators and piezo motors
Piezo actuators and motors are often the preferred technology when an application requires movements of a few millimeters or less with high resolution. And while these small-scale applications don’t typically attract the same level of attention as those that require massive 100 mm diameter ball screws or enormous 12-meter gantries, applications in the single- and […]
New high force voice coil motors from Moticont
Moticont has added a new, higher continuous force, higher peak force linear voice coil motor to its series of 2.750 in. (69.9 mm) diameter x 3.50 in. (88.9 mm) long (housing) voice coil motors. The LVCM-070-089-03 linear voice coil motor features 40.86 lb (181.5 N) continuous force and 129.1 lb (573.4 N) peak force. This […]
35-mm CBL35C programmable electric moving-coil servo actuator from SMAC Corp.
Now a 35-mm-diameter SMAC Corp. CBL35C electric cylinder has a built-in controller. The latter lets the CBL35C control force, position, and velocity — and facilitates simple installation. The actuator works for applications with limited space but needing accurate control … Plus the CBL35C provides significantly longer life, programmability, high speed, accuracy, and energy efficiency maintaining […]
What are linear ultrasonic piezo motors?
Ultrasonic piezo motors create useful rotary or linear motion by exciting a piezo element to produce high-frequency oscillations. In linear ultrasonic piezo motors, the piezo element is a piezoelectric plate. Applying voltage excites the plate at its resonance frequency and creates eigenmode oscillations – meaning all parts of the plate move sinusoidally at the same […]
H2W develops highest force voice-coil actuator
H2W Technologies has developed what it says is the world’s highest force commercially available non-commutated DC linear actuator, otherwise known as a direct drive voice coil actuator. The model NCC08-75-3000-3X is capable of generating a continuous force of 300 lb (1,330 N) and a peak force of 900 lb (4,000 N) at a duty cycle […]
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