Motor/Drive/Controller

Advanced Micro Controls (Terryville, CT) offers a size 17 PLC-based SMD Series integrated stepper motor/drive/controller system. The integrated solutions are suited for new machinery, retrofits, and rapid changeover applications. The SMD17E2 (NEMA 17) integrated motor combines an 80-oz. in. (0.56 N-m) torque stepper motor with a DC drive and Ethernet/IP and Modbus-TCP interface in a single, compact design. The embedded Ethernet switch simplifies multi-axis applications and optional encoder feedback eliminates the need for a separate home limit switch. The motors feature built-in EtherNet/IP and Modbus-TCP network connectivity, embedded Ethernet switch, SynchroStep™ technology, optional integrated encoder (incremental or multi-turn absolute), IP67-rated versions, gearboxes, and compatible cord sets. All of the motors are programmed from the host controller, so no separate software is needed.

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Integrated Motors

Applied Motion Products (Watsonville, CA) introduced three models of StepSERVO™ integrated motors that provide high-speed motion control for high-throughput applications such as automated test and measurement, and automated assembly. Using closed loop feedback and advanced control technology, the motors create more torque for higher acceleration. The motors draw just enough current to control the load, automatically reducing current to the motor when the load is not demanding torque. The TSM Series features 8 digital inputs, 4 digital outputs, and 1 analog input, and supports RS-232, RS-485, CANopen, Ethernet, EtherNet/IP, and Modbus communications. SSM Series motors feature 3 digital inputs, 1 digital output, and 1 analog input. TXM Series motors combine the features of the TSM Series with IP65-rated environmental capabilities and M12 connectors for operating in wet and dusty environments.

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Planar XY Stage

PI L.P. (Auburn, MA) offers the V-738 XY translation stage designed in a three-piece arrangement for improved geometric performance. The integrated planar design provides orthogonality of <100 μrad and straightness/flatness of 2 μm. Three-phase brushless linear motors drive both axes, transmitting the drive force (200N peak) to the motion platform directly without friction. The ironless motors provide smooth running with velocity control due to the lack of cogging effects caused by permanent magnets. Acceleration of 1G is achieved with maximum velocity of 0.5 m/sec. The XY-travel range is 100 mm per axis. Other models in the series include the V-731 XY stage with 200 × 200-mm travel and the V-741 XY stage with 300 × 300-mm travel. Integrated optical linear encoders provide position resolution down to 1 nanometer. Mechanical position repeatability is 0.1 μm and minimum incremental motion of 20 nanometers is achieved.

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Electric Linear Actuators

The RSX family of extreme force electric linear actuators from Tolomatic (Hamel, MN) features precision-ground planetary roller screws for reliable performance in demanding conditions including cold weather operation. The family includes two frame sizes capable of achieving 18,000 lbf to 30,000 lbf (80 kN to 133 kN) max force. Features include a Type III hard coat anodized aluminum housing to withstand demanding environments; standard thrust rod anti-rotation; IP67 rating for water, dust, and corrosion resistance; and compatibility with servomotors and gearboxes up to 215-mm frame sizes. The actuators are available with white epoxy coating and stainless steel thrust rod.

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Rotary Actuator System

Oriental Motor (Torrance, CA) introduced the 60-mm frame size DGII rotary actuator equipped with an AlphaStep AZ Series absolute encoder stepper motor. The rotary actuator is used with four types of AZ Series DC input drivers (stored data type, pulse input driver with built-in RS-485 communications, pulse input type, and multi-axis driver with EtherCAT communication). It is a complete rotary actuator system that eliminates the need for additional sensors. It can work in applications where step and direction are required or in applications where PLC or touch-screens (HMI) are being used, without the need for additional modules connected to the PLC. The system is compatible with a wide range of master controller types and control methods.

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Accelerometer

PCB Piezotronics (Depew, NY) released the Model EX356A73 triaxial charge accelerometer designed for use in environments with ambient temperatures up to 900 °F/482 °C. It features a frequency range up to 4,000 Hz with a ±5% tolerance, and is packaged in a nickel alloy, hermetically sealed housing with three 1032 coaxial jacks. It also utilizes a UHT-12 sensing element with no pyroelectric output, reduced thermal noise spikes that eliminate false alarms during monitoring, and shear mode crystals to prevent base strain and transverse measurement errors.

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Absolute Encoders

Encoder Products (Sagle, ID) introduced Models A58HE and A58SE EtherCAT-ready, multi-turn absolute encoders designed for harsh factory and plant environments. They are particularly suited to applications where Fieldbus connectivity is required and the encoder has to retain absolute position information after power-off events. The A58HE is a 58-mm encoder in a hollow bore construction; the A58SE is a 58-mm shaft encoder available with either a clamping flange or synchro flange. Features include multi-turn resolution up to 43 bits, up to 16 bits of single-turn resolution, bore sizes to 0.375” or 15 mm, shaft diameters to 0.375” or 10 mm, operating temperature range of -40 to 85 °C, and continuous digital position monitoring.

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Power Clamps

Destaco (Auburn Hills, MI) introduced TCC-2E Series Tolerance Compensation Clamps that provide flexibility in welding and assembly applications that require the clamping of components of differing thicknesses or tighter tolerances. The clamps are suited for flexible manufacturing applications in the automotive, aircraft, and consumer goods industries. The clamps are available in a variety of sizes. They feature an enclosed body that protects the internal mechanism and have been tested to be maintenance-free for three million operating cycles. Various cylinder designs with unlockable non-return check valves, hold-open devices, and rod-lock units are available.

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Gimbal Mount

The AU300-AER three-axis gimbal mount from Optimal Engineering Systems (Van Nuys, CA) features full 360° rotation of each axis and handles loads to 10 kg (22.5 pounds). It has a clearance of 300 × 300 mm around the roll axis stage. The azimuth stage rotary table is mounted on a 360 × 360 × 13 mm plate with handles and has predrilled accessible mounting holes for integration into new or existing applications and for increased stability. The three axes are driven by bi-directional stepper motors. Each axis features low-backlash worm gear drives and precision V-groove and cross roller bearings for resolution of 3.6 arc seconds, and repeatability and positional accuracy to 36 arc seconds. Travel speed of each axis is 8 degrees per second. Electrical connections are made using three 9-pin DB-9 connectors.

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Torque Motors

Tecnotion (The Netherlands) offers rotary torque motors with a magnetic design optimized for maximum flux density and copper fill to provide very high torque-to-volume ratios. The motors feature encapsulated windings and include two types of thermistors as standard features. Motor sizes from 68 to 160-mm diameters are available. They can be integrated directly into the machine structure; an open inner diameter enables wire and cable feedthrough. Completely sealed stators and integrated temperature protection and measurement sensors are included. They provide continuous torque ratings ranging from 0.27 Nm to 63.5 Nm and speeds ranging from 190 rpm to 6918 rpm.

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Motor Control Integrated Circuit

Microsemi Corp. (Aliso Viejo, CA), announced the LX7720 radiation-tolerant motor control integrated circuit that works with a field programmable gate array (FPGA). Features include four half-bridge N-channel MOSFET drivers, four floating differential current sensors, pulse-modulated resolver transformer driver, three differential resolver sense inputs, six bi-level logic inputs, and fault detection. The circuit also features 100-krad total ionization dose (TID) and 50-krad enhanced low-dose radiation sensitivity. Power drivers are via external field-effect transistors (FETs).

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Motion Tester

Norman Tool (Evansville, IN) offers the 2-Axis Motion Pro Tester that simulates both finger pushes and finger swipes. It is designed to provide a range of finger pressing and/or sliding/rubbing motions to be used for contact and button testing, as well as to test for wear and durability. The machine can test all types of buttons and switches, as well as monitors, screens, displays, and anything that may get wear from human fingers or other similar types of rubbing, pushing, or sliding. The system also tests membrane switches, silicone keypads, and computer keys.

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Stepper Motors

The NEMA-AMT112S stepper servomotors from CUI's Motion Group (Tualatin, OR) are available in NEMA 8, 11, 14, 17, and 23 frame sizes with a step angle of 1.8° and holding torques ranging from 3 to 270 oz-in (0.021 to 1.90 N-m). When paired with a controller, the motor and encoder combination provides closed-loop feedback for a complete servo system. Integrated with the stepper motors is the AMT11 incremental encoder series that features 22 programmable resolutions from 48 to 4096 PPR, a digitally set zero position, and CMOS voltage output waveforms. The resolutions are fully programmable without having to remove the encoder from the motor.

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Planetary Gearboxes

GAM (Mount Prospect, IL) released EPR and PER Series right-angle bevel planetary gearboxes. Featuring a spiral bevel gear input to an inline planetary gear output, the gearboxes are available in ratios of 3:1 to 1000:1 and in a wide range of sizes and configurations. The EPR Series features five output options including three different shaft outputs, a hollow shaft output, and a flange output. The PER employs output bearings and is used in motion control applications where axial and radial loads are minimized. The PER has a metric or NEMA shaft output option. Both are available with motor mounting plates to accommodate most servomotors.

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Motion Design Magazine

This article first appeared in the December, 2018 issue of Motion Design Magazine.

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