Archive Page 2

Temperature Effects on Motor Performance

When applying DC motors to any type of application, temperature effects need to be considered in order to properly apply the motor.  Performance will change as the motor temperature changes.  When reviewing DC motor curves, the user needs to ask the question “Do these curves represent performance of the motor at room temperature, or do these curves illustrate performance at the maximum rated temperature?”  Depending on the temperature and the required operating point on the motor curve, the performance difference between “cold” and “hot” conditions can be significant.

Click on the link below to download this White Paper.

http://www.engineeringwhitepapers.com/companies/haydon-kerk/temperature-effects-motor-performance/

 

Tags:  Motor Performance, Servo Motor, BLDC Motor, Electric Motor, Temperature Effects

E-book: Motor Selection & Gearbox Matching Tech Tips

In this Tech Tip E-Book, access resources on servo selection, tips for quiet gear motor operation, gearbox matching, basics of motor selection and more on motors.  Included are case studies for automotive and medical applications.  Get motor selection tips, selection tools and resources from Groschopp in this issue.

Click on the link below to download this E-Book.

http://s3.amazonaws.com/2013_pdfs/Groschopp/Groschopp-Tech-Tip.pdf

For more information, please contact:

EDITORIAL CONTACT:

Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

Tags:  Servo Motor, Servo Selection, Gearbox Matching, Motor Selection, Motor Tips, E-Book, Electric Motor, PMDC Motor

How to Select the Right Screw for your Linear Actuator

PowerPoint Presentation by Gary Rosengren, Director of Engineering at Tolomatic

The lead screw is an essential component in many electric linear actuators.  When selecting the type of lead screw a linear actuator should have, you need to strike a balance between purchase price and performance characteristics to get full value.

This new slideshow from Tolomatic shares the advantages and limitations of acme, ball and roller screws (the three screw types used in linear actuators.)  The slideshow also describes the application characteristics most suited to each screw type.

Acme Screws

acmme screw for linear actuatorAcme screws have a trapezoidal tooth form that’s very strong.  They come in a variety of leads and diameters to fit many electric linear actuator applications.  Nuts can be made from metals (which require lubrication to overcome friction) and self-lubricating plastics.

Acme screws operate quietly and are usually low cost.  They can be very inefficient because they need high motor torques to drive them due to the friction inherent in the sliding action between screw and nut.  But because of this friction and thread geometry, acme screws may reduce or eliminate back driving.

An acme screw is a good choice in applications that require slow speeds and low duty cycles.  However, variables such as nut material, environmental factors and the demands of the application affect the wear characteristics of acme nuts, so it can be difficult to predict the service life of these screw/nut systems.

Ball Screws

Ball screws are very popular in linear actuators.  They get their name from the re-circulating ball screw for linear actuatorball bearings that fit between the arch-shaped screw and nut threads.  The ball bearings transmit force and relative motion very efficiently as they roll through one or more circuits in the nut.

Ball screws are available in many diameters, leads and accuracies.  Under ISO 3408, they’re classified by lead accuracy in one of five grades – 1, 3, 5, 7 or 10 – with grade 1 being the most accurate.

Ball screws have higher thrust capabilities, longer service lives and higher efficiency than acme screw systems.  On the downside though, some ball screws can be back driven easily (depending on the lead), are higher cost and can be noisy.  They’re ideal for applications that require high duty cycles, high thrust and high speeds.

Roller Screws

roller screw for linear actuatorRoller or planetary screws have triangular-shaped threads which match up with multiple threaded rollers in the nut.  These rolling elements create a highly effective system for transmitting force, even better than that of a ball screw.  Like ball screws, roller screws are classified by lead accuracy into five grades.

Roller screws have very high force transmission capabilities since the rollers have significant contact with the screw threads.  They come with a higher price tag though, which is balanced by the fact that they are long lasting, capable of high speeds and quick acceleration, and require little maintenance. Some roller screws may be back driven, though, depending on the lead.

Roller screws are best suited to applications where their high performance and long service life outweigh their initial purchase price.

More information on Tolomatic’s Product Family can be viewed at-

http://www.electromate.com/products/?partner=1175527175

For more information, please contact:

EDITORIAL CONTACT:

Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

 

Tags:  Electromate, Tolomatic, Linear Actuator, Electric Linear Actuator, Rodless Cylinder, Rod Style Cylinder

 

Motion Control Technology Handbook

Published by Manufacturing Automation

Manufacturing AUTOMATION’s ‘Motion Control Technology Handbook’ is a digital magazine that focuses on Automation and Motion Control products and systems.  Posted on MA’s website as an interactive flip-style magazine, the Technology Handbook provides market information, technical product information, tutorial video’s, white papers as well as trends within the Motion Control Industry.

Motion Control Technology Handbook

 

This is a must-read for all to OEM machine builders, end users and system integrators.  Click on the link below to view the Handbook.

http://mfgautomation.techhandbook.dgtlpub.com/2013/2013-11-30/home.php

Tags:  Motion Control, Motor Control, Machine Control, Servo Systems, Stepper Systems

Linear Bearings and Guiderails ship in less than 1 week

 

LinTech announces an increase in its profile rail component product line.  Sizes from 15 to 45 mm are now available in both the ARC & HRC series.   Available in short, normal and long block lengths, most models ship < 1 week.

Competitive pricing and dimensional drop-in interchangeability make switching to Lintech a breeze.

Click on the link for more information.

http://www.electromate.com/products/series.php?&series_id=105163

EDITORIAL CONTACT:
Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

Tags:  Lintech, Electromate, Linear Bearing, Guiderail, Square Rail, Recirculating Linear Bearing, Rails, Profile Rail

 

Live Webinar: Designing an Optimal Rotary Motion Joint for Robotics & Factory Automation

 

Space is limited. Reserve your Webinar seat now.

Register now to watch this webinar live or anytime after July 29, 2014.

Harmonic Drive® gearing is a dominant technology used in precision rotary motion applications in the field of robotics and factory automation as well as other industries such as machine tool, semiconductor, and medical equipment.   Basic principles and technical considerations will be reviewed leading to a discussion of rotary actuator joint design optimized for the application requirements while minimizing size & weight.

Webinar Content to Include:
-Overview of Harmonic Drive gearing principles and operation
-Technical considerations of joint performance
-Application design examples
-Design enhancements and customization

Title: Designing an Optimal Rotary Motion Joint for Robotics and Factory Automation
Date: Tuesday, July 29, 2014
Time: 11:00 AM – 12:00 PM EDT
Presenter: Bob Mullins, VP of Sales, Harmonic Drive LLC

 

Tags:  Harmonic Drive, Electromate, Strain Wave Gearing, Rotary Motion, Automation, Motion Control, Webinar, HD, Robotics, Factory Automation

 

 

Highly Dynamic DC Brushless Servo Motor – maxon’s EC-i40

Compact And Powerful

In automation and robotics, many applications are characterized by high energy and high torque at the same time.  Spatial restrictions also mean that drives must be short, have a long service life and be maintenance-free.  The newly redesigned EC-i motors from maxon motors offer solutions that fit these requirements perfectly.

Maxon EC-i40 Brushless Servo Motor

Maxon EC-i40 Brushless Servo Motor

These brushless DC motors have several key advantages: low inertia, minimal detent, robust bearings and compact construction.  The use of high-powered permanent magnets ensures high power density, providing great speed stability under load.

These motors are available in 40 mm diameter and in two lengths, namely 26 mm (50 Watt) and 36 mm (70 Watt).  The modular system with gearheads, encoders and controllers from the maxon delivery program offers a large number of possible combinations.

EC-i motors are ideally suited for applications that require maximum drive in a minimum space.  Typical areas of application are robotics, industrial automation and security technology. 

Click on the link below for more information.

http://www.electromate.com/products/?keyword=EC-i+40&d=102310

EDITORIAL CONTACT:
Warren Osak
sales@electromate.com
Toll Free Phone:   877-737-8698
Toll Free Fax:       877-737-8699
www.electromate.com

Tags:  maxon, maxon motor, maxon DC motor, Electromate, EC-i40, servo motor, BLDC motor, brushless motor, flat motor, pancake motor, automation, electric motor, motion control

 

 


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