Features

Drive Utilized in Filament Respooler

Optical fiber, now the mainstay of telecommunications as well as sensor, illumination, and imaging systems, is made by first pulling a large-diameter preform into a long, filimentous fiber. Then divided into bunches, a resin cladding is applied to keep the transmital of light uncontamintated. The finished product is then wound onto large spools to await shipment to customers. Showmark (Downingtown, PA) developed the automatic UniSpooler to customize the amount of cable a customer gets based on need, and uses the Kinemax KI3-15-5 linear drive from Amacoil/Uhling (Aston, PA) to help guide filaments from the supply spool to smaller takeup spool with the desired amount of fiber or wire.

Posted in: Applications, Motion Control, Application Briefs

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Guide Used in Leak-Testing System or Plastic Bottles

Container leaks can range from mildly annoying to potentially dangerous. To avoid faulty containers from ever leaving the production line, producers have installed testing devices as part of the bottle production process to ensure integrity. As many bottle/container manufacturing systems were pre-existing, a unit able to integrate itself into the existing production line without necessitating a long shutdown or costly re-design was seen as ideal. When Air Logic Power Systems Inc, (ALPS, Milwaukee, MI) developed such a unit, the RS-100 Plastic Container Integrity Tester, it chose the PDU2 linear transmission unit from HepcoMotion (Tiverton, UK) and distributed by Bishop-Wisecarver (Pittsburg, CA). Using the PDU2 eliminated many of the bottle handling issues that could potentially slow production by its ability to move in synch with an existing production line.

Posted in: Applications, Application Briefs

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Brushless Motor Drive

Intelligent Motion Systems (IMS, Marlborough, CT) released the MDrivePlus motion control system for brushless motor applications. The unit features 20 microstep resolutions to 51,200 (full step, degrees, metric, and arc minutes), a motion control system-on-a-chip, electronic gearing, 6,385 bytes of program storage, and analog input to 10 VDC. Drive voltage ranges include +12 to +75 VDC and 120 and 240 VAC. The housing is chemical resistant and the unit has a cast aluminum heat sink. Outputs are configured for sourcing or sinking, and the unit features an auxiliary logic power input.

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Motor Drive Module

International Rectifier (El Segundo, CA) released the IRMCT3UF1 fully integrated high-reliability hybrid motor control modules enabling digital, sensor-free vector control of permanent magnet motors. The module combines digital control, analog interface, and power stage. Speed and torque control are provided with commutation or position sensors. Sinusoidal current control enables current startup sequencing and low loss space vector pulse-width modulation. EMI is suppressed. The unit’s algorithm accommodates motor parameter variation for compatibility with brushless DC and permanent magnet AC motors.

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Hub-Fastening Gears

Sterling Instrument (New Hyde Park, NY) released the “S1268Z-...M” series of 84 combination aluminum-acetal gears. Coming in metric and imperial sizes, the gears are 20° pressure angled, AGMA Q10 and ISO Class 7. Sizes range from 21 – 210 teeth with outer diameters ranging from 0.958 – 4.083". The gears are designed to mate with hubs accepting shaft sizes from 0.0900 – 0.2498" in diameter, and come in 24, 32, 64, and 72 diametral pitches with a face width of 1/8". Other features include noise reduction, a small gear hub envelope, and Fairloc® integral hub fastening system technology.

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Translation Stage

Physik Instrumente (PI) LP (Auburn, MA) introduced the P-652 piezoelectric linear-motor driven translation stage, measuring 9.0 × 6.5 × 2.4 mm. Consisting of four parts (ultrasonic piezoelectric resonator, two lateral sliders, and a spring doubling as the moving carriage), the device can replace classical drive elements in a micro-system. The stage offers a travel range of 3.2 mm and can move up to 80 mm/sec. The load to be moved is mounted directly on the carriage and moved by a force of up to 100 mN. The unit is backlash free (no lead screws), with power consumption in steady state conditions being zero. No external brake is needed to maintain stability. Other features are: 55 mA operating current, holding force of >0.2 N, and a resolution of better than 0.1 microns.

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Bi-Directional Motors

Oilgear Co. (Milwaukee, WI) introduced the MFW and MVW fixed and variable displacement bi-directional high-speed motors, offered in two frame sizes and four displacements. Features are: cylinder mounted in polymerous journal bearings for special fluids, a hard-on-hard rotating group for greater contaminate resistance, a sealed front shaft bearing, metered hydrodynamic or regenerative braking, maximum pressure of 4,500 psi, and maximum speed to 3,000 rpm.

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