Motion Control

Rotary Tables

Koma Precision (East Windsor, CT) offers Tsudakoma RDS Series direct drive rotary tables that use a proprietary direct drive motor system that enables the tables to achieve high speed and acceleration with no backlash. The compact, single-axis, 150-rpm tables feature indexing accuracy of ±10 arc seconds and a pneumatic braking system. Various options such as rotary joints, chucks, tailstocks, support spindles, and faceplates are available. The tables can be integrated with machine tools that have Fanuc or Mitsubishi controls. The tables also feature a low-profile build for mass production and high-speed indexing operations in the automotive, medical, and computer/electronic manufacturing industries.

Posted in: Products, Manufacturing & Prototyping, Motion Control
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Undermount Slide

Accuride (Santa Fe Springs, CA) announced the 3135EC Eclipse Undermount Easy- Close slide. The slide offers improved full extension movement with a 100-pound load rating and 4.8 pounds of pull force. The Easy-Close action brings drawers to a smooth close while reducing the total envelope of the product. Fluid dampeners resist slam without adding bounce-back. The slide can be configured with multiple drawer-front adjustment features, enabling horizontal, vertical, and front-to-back adjustment. A lower spacer clip with plastic ball bearings provides additional lateral support, reducing drawer sagging and side-to-side movement.

Posted in: Products, Manufacturing & Prototyping, Motion Control
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Pneumatic Gripper

Fabco-Air (Gainesville, FL) announced the FKHS Series 3 Jaw parallel motion pneumatic gripper for handling small parts in tight spaces. They are available in bore sizes of 25, 32, 40, 50, 63, and 80 mm. A magnetic piston is standard on all grippers. Mounting is via direct body (top and bottom) mounting holes.

Posted in: Products, Manufacturing & Prototyping, Motion Control
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Positioning System

Piezoconcept (Lyon, France) offers the Hybrid System, an integrated positioning system for use with any standard inverted optical microscope. It combines a manual micrometer-driven, two-axis, linear motion stage with high-resolution, ultra-low-profile nanopositioners providing up to 300 μm in every direction. A stable blocking force into each axis of the coarse positioning stage provides a secure base for nanopositioning. The system provides sub-nanometer resolution under closed loop control. Typical applications include high-resolution microscopy, particle tracking, and confocal microscopy. Upon request, an additional breadboard can be provided.

Posted in: Products, Manufacturing & Prototyping, Motion Control
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A Method for Accurate Load/Position Control of Rigidly Coupled Electromechanical Actuators

NASA has developed a technique designed to prevent cross-coupling in systems where two or more linear electro-mechanical actuators (EMA) are rigidly connected and are in danger of becoming cross-coupled. In such systems where the linked EMAs are commanded to achieve two distinct goals, such as position and load control, control problems often arise — especially at higher load and linear velocity levels. Both position and load control become inaccurate and in certain situations, stability of the overall system may be compromised. The NASA-developed approach mitigates the problem and achieves both accurate position following and desired load levels between the two (or more) actuators.

Posted in: Briefs, Mechanical Components, Mechanics, Positioning Equipment, Electronic control systems, Electronic equipment, Sensors and actuators
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A Soft Control Architecture: Breakthrough in Hard Real-Time Design for Complex Systems

How to cut costs, improve quality, and differentiate your products with a software-based approach to machine automation

OEMs have long relied on expensive, cumbersome hardware like FPGAs and DSPs for precision motion control. But new advances in software-based machine automation are changing that paradigm, with huge potential benefits.

Posted in: White Papers, Electronics & Computers, Manufacturing & Prototyping, Motion Control, Automation, Robotics, Semiconductors & ICs, Software
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5 Real-Time, Ethernet-Based Fieldbuses Compared

Ethernet-based fieldbus standards have changed the game for machine builders. But with so many protocols competing to be most valuable and viable, how should you decide which to use?

Posted in: White Papers, Electronics & Computers, Motion Control, Automation, Robotics, Software
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Software vs Hardware Machine Control: Cost and Performance Compared

OEMs traditionally used DSP-based hardware, plugged into a PC, for motion control. But new software-based solutions have challenged this approach, claiming equal or better performance at lower cost.

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