Motion Control

Lead Screw Assembly

The Micro Series ZBM anti-backlash lead screw assembly from Haydon Kerk Motion Solutions (Waterbury, CT) can be customized to specific applications that require unique geometry and custom materials such as Kerkite® composite polymers. The anti-backlash nut utilizes a special nut thread system that, when combined with a radial force, provides simple backlash compensation. The nut is suited for applications in which smooth motion is required and space is at a premium.

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Position Sensors

Macro Sensors (Pennsauken, NJ) offers the BBP Series air extended, spring-loaded LVDT position sensors to measure range of motion in pneumatic cylinders. The 3/8 "-diameter, pencil-type gaging probes measure the position of a target surface. They feature a probe that moves out and makes measurements only near the very end of the probe movement when it is almost fully extended, and then retracts so the probe gets out of the way of damage.

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Drive Couplings

Automation Direct (Cumming, GA) offers SureMotion drive couplings in four styles: jaw/spider, double loop, Oldham, and beam-style servo. The jaw/spider coupling is a clamp-style coupling with 14- to 65-mm aluminum hubs, and bore diameters ranging from 3 /16" to 32 mm. Double loop coupling hubs are made of series 300 stainless steel with corrosion protection, and are available in 10- to 40-mm hub sizes. Oldham drive couplings feature aluminum hubs in 19- to 57-mm sizes. Beam-style servo couplings are stainless steel set-screw couplings that feature the flexibility of a bellows coupling plus the torsional stiffness and strength of a disc coupling.

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Track Motion Platform

ABB (Auburn Hills, MI) introduced the IRBT 2005 flexible, compact, modular, medium track motion platform for robots and transfer applications. It is designed to accommodate rapid product changes in applications that require an extended working range and high degrees of speed and accuracy. It is available with up to two carriages as a robot track, with additional carriage plates available to carry any necessary process equipment, and up to three carriages as a transfer track. The modular design is comprised of one-meter lengths that can be connected to form a track between 2 and 21 meters.

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Rotary Actuator

The Hydraulic Unibody (HUB) Series rotary actuator from Parker Hannifin Corp. (Cleveland, OH) is built with a hard-coat anodized housing and hardened alloy steel pinion and racks for applications exposed to harsh weather extremes. The rack-and-pinion gear design minimizes hydraulic power unit (HPU) size. The one-piece housing eliminates leak paths and external connections, and the design allows for mounting directly on numerous process valves. Several add-on valve modules are available. A crossover vent module allows for flow between both cylinder ports, permitting free rotation of the process valve. A D03 Solenoid-ready module provides a manifold block directly mounted to the actuator.

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Drive Starters

NORD Gear Corporation USA (Waunakee, WI) introduced the SK135E/SK175E soft start drives designed for use in a distributed control system. They can be mounted directly on the motor or near the motor. The starters regulate the three major functions of a motor starter and control them in order to protect equipment. Basic features include two digital inputs and two digital outputs, four DIP switches, up to four configurable potentiometers, temperature sensor input, electromechanical motor brake control, motor overload protection, flux monitoring, and automatic phase sequence detection (minimum current).

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Brushless Motors

maxon motor (Fall River, MA) offers ECX high-speed brushless micro motors in diameters of 8, 16, and 19 mm achieving speeds of up to 120,000 rpm. They are available with different power stages and in standard or sterilizable versions (up to 2,000 autoclave cycles).

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Electronically Commutated Motors

EC Fans & Drives, a division of Epec Engineered Technologies (New Bedford, MA), announced EConomy and EXRi50 electronically commutated motors. The EConomy features a slim profile that enables use in applications where space restrictions are a concern. It is a single-speed, single-direction, entry-level EC motor with an operating range of output power at 1-16 Watts. The EXRi50 is a global voltage, single-speed, single-direction, EC fan assembly motor available as a fan-pack with integrated fan ring.

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Angle Sensors

Novotechnik, U.S. (Southborough, MA) introduced the RSC3200 angle sensors that feature shaft connectivity options and provide absolute rotary position measurement. Analog outputs are 0.25 to 4.75V or 0.5 to 4.5V. Built-in coupling accepts D-Shaft with shaft customization available. The non-contacting sensors are fully redundant, measure angles up to 360°, and have an operating temperature range of -40 to +125 °C. Repeatability is 0.5°, resolution is 12-bit, and absolute linearity is within ±1.0% FS at 360°.

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Brush DC Motors

Portescap (West Chester, PA) introduced the Athlonix™ 22DCP brush DC motors available in a 22-mm diameter. They feature a coreless design with a self-supporting coil and magnetic circuit, and are available in two configurations: precious metal commutation, and graphite commutation with Alnico magnet inside. An REE (Restriction of Electro Erosion) coil is an available option. The motors are compatible with encoders and gearheads of various sizes and ratios.

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