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Metal Bellows - Key Enabling Technology for a Wide Range of Engineering Applications

Convert pressure, mechanical, vacuum and temperature changes into linear or rotational motion using metal bellows. It may be the smallest component of an overall machine assembly but it very often plays the most critical role in the functionality of a system. This newest whitepaper from Servometer outlines seven key enabling technologies that benefit from bellows across a wide range of engineering applications – providing a more precise, more reliable or less costly alternative to an existing engineering solution.

Posted in: White Papers, Aeronautics, Defense, Motion Control

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Dust Tolerant Connectors

The ruggedized housing for electrical or fluid connectors is designed to withstand harsh environments and rough handling. John F. Kennedy Space Center, Florida NASA’s Kennedy Space Center has developed a novel ruggedized housing for an electrical or fluid umbilical connector that prevents intrusion of dust, sand, dirt, mud, and moisture during field use under harsh conditions. The technology consists of a pair of hand-sized protective umbilical interface housings, each containing a connector with an integrated end cap. When the end cap covers the connector, the connector is protected. Each housing has a unique lever assembly connected to the end cap that, when squeezed, flips the end cap up to expose the connector. When in the up position, the two end caps face each other. To mate the connectors, the levers on both housings are squeezed, raising the end caps, and the two umbilicals are joined and twisted to couple them. Once the connectors are mated, the levers on both housings are released. This simultaneously seals both the umbilicals and the end caps. When dealing with cryogenic connectors, a purge can be applied to the housings to prevent icing when the connectors are demated.

Posted in: Briefs, Mechanical Components, Fluid Handling, Machinery & Automation

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Model-Driven Innovation in Machine Design

This whitepaper discusses a Model-Driven Innovation process, an approach that makes a multidomain, system-level model the core of design activities, allowing engineers to see how individual subsystems work together. With this approach, problems can be fixed early without project delays, and designs can be validated with access to the underlying mathematics, allowing organizations seeking to mitigate system complexities to improve their ability to control costs, produce high-quality designs and move products to market more quickly. Using tools like MapleSim, the multidomain system modeling tool from Maplesoft, enables engineers to develop and test high-fidelity virtual prototypes of their complex dynamic systems.

Posted in: White Papers, Manufacturing & Prototyping, Motion Control, Machinery & Automation, Robotics

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How to Prevent Step Losses with Stepper Motors

While stepper motors are an excellent solution for many applications, a key concern is step losses. However, in most instances step losses can be prevented or corrected. It is important to remember that a stepper motor does not operate like a DC motor. This white paper from MICROMO engineers provides guidance to determine step losses or non-operation across a variety of applications.

Posted in: White Papers, White Papers, Mechanical Components, Medical, Motion Control, Motors & Drives

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Motor Drive

The RoadRunner SoftStep R213S microstepping motor drive from Testra Corp. (Tempe, AZ) features an onboard processor that treats the input steps as small vector moves, and chains them together with 250 or 256 microsteps per regular motor step with controlled accelerations. Dual chopper stabilized current comparators and auto-calibration eliminate communication discontinuities and maintain sine wave drive, reducing motor noise. The drives are equipped with jumpers installed with a divisor setting of 10 to make them Geckodrive compatible; jumpers can be reconfigured by the user. The drive microsteps in either 250 or 256 increments per step for DS (double-step) settings, 1 (full-step), 2 (half-step), 4, 8, 16, 32, 64, 128, and 256. The drive measures 2.5 × 2.5 × 0.825", input power is 20VDC – 80VDC, and current drive is 1 to 7 amps. Other features include resistor programmable current, opto-isolated inputs, and step frequency to 5 Mhz. Available options include custom waveforms to match individual motor characteristics, and user-programmable waveform. For Free Info Visit http://info.hotims.com/61062-301

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Positioners

ALM Positioners (Rock Island, IL) released the Model MHL1P 10,000-pound-capacity single-column positioner that features 68.5" vertical travel in 35 seconds; a pendant-controlled, 4-HP, column-mounted hydraulic unit for lifting and lowering; solenoid- controlled safety pawls; 360-degree CW or CCW rotation; a rotator with 267,200 inch-pounds of torque; and a 48" base. It is offered as a dual-motor rotator and variable frequency drive (variable speed rotation of .75 to 2.3 RPM), as well as a single rotator.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Linear Slide

Haydon Kerk Motion Solutions (Waterbury, CT) introduced the WGS Wide Guide Screw linear slide that utilizes a screw-driven carriage. Length and speed are not limited by critical screw speed, allowing high RPM, linear speed, and long stroke lengths. The slide offers stroke options of 6, 12, and 18" in three leads (0.1, 0.5, and 1.0"). Each slide comes with a size 17 and a size 23 motor mount. The slide utilizes sliding plane bearings on a low-profile aluminum guide rail. The lead-screw is made of stainless steel, and all moving surfaces include Kerkite® polymers running on a Kerkote® TFE coating. The slides come with wear-compensating, anti-backlash-driven carriages. Additional driven or passive carriages can be added, along with application-specific customization. Linear guides without the drive screw also are available. For Free Info Visit http://info.hotims.com/61062-302

Posted in: Products, Manufacturing & Prototyping, Motion Control

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