Linear Motion Control – One Piece ETX Linear Bearing/Pillow Blocks Can Be Used In Radioactive Environments!

Linear Motion Control

 

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E. Longmeadow, MA Motion — Control Components – Linear Motion – LM76 now offers one piece ETX Linear Bearing/Pillow Blocks that will not degrade in a radioactive environment! Machined from a solid block of self lubricating ETX, linear bearing-blocks have high strength, excellent wear resistance, low coefficient of friction, and excellent dimensional stability at higher temperatures As there is no other materials such as PTFE seals or lubricants these bearing-blocks are maintenance free. Custom designed for use in a nuclear power plant these linear bearing/pillow blocks travel on ceramic coated shafting (also supplied by LM76) completely submerged in radioactive water. Designed with a slight interference fit between bearing ID and shaft, contaminates are scraped from the shaft’s surface. The low frictional characteristics of ETX have little impact on drive force. They are now available in Inch and Metric sizes.

ETX bearing-blocks are also FDA/USDA/3-A Dairy compliant and are also are ideal for: Pharmaceutical, medical, food, and dairy processing applications.

EXT features a high continuous service temperatures up to 210°F (100°C) and offers good chemical and abrasion resistance, low moisture absorption, and resistance to staining. These ETX linear bearing-blocks with the slight interference fit keeps the bearing free from debris and bacterial contamination, are not affected by biological fluids, mild acids, can be washed down with cleaning agents, and steam cleaned.

Don’t need solid EXT bearing-blocks consider the FDA/USDA/3-A Dairy compliant electroless nickel coated or stainless steel pillow blocks with PTFE linear bearings and Snap-in EXT Scraper Seals which are available for closed linear bearings, and closed pillow and flange blocks.

To follow the NEW Series from LM76, THE ENGINEERING EDGE! and learn about interesting Outside-of-the-Box solutions developed by LM76 to solve some interesting linear motion problems! CLICK HERE

About LM76

Founded in 1976, LM76 has been a leading designer/manufacturer of linear bearings, slides and linear motion systems. LM76 is renowned for its industry leading Minuteman PTFE Composite linear bearings. LM76 is a leading supplier of precision linear shafting: RC60, 300 Series Stainless Steel, and ceramic-coated aluminum shafting. LM76 also offers several FDA/USDA compliant linear bearings and slides for the food processing, pharmaceutical, medical, and packaging industries.

For additional information contact Mike Quinn at: LM76, 140 Industrial Dr., E. Longmeadow, MA 01028; Telephone: 413-525-4166, Fax: 413-525-3735 or E-Mail: mquinn@lm76.com or visit the website at http://www.lm76.com

For other Motion Control Components, Applications, and Technology from LM76 go to: http://MotionControlWeb.com

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Motion Control White Paper – Unlocking the Linear Motion Specification Query

Motion Control White Paper

Understanding the specifications needed to properly size my motion control application –

 

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Santa Clarita, CA —– Every motion control problem begins with a need to move a certain payload over a certain distance. However, there are many types of moves possible, and determining the right motion control solution may require some calculations to match the specifications found on a given motors data sheet. Most sales engineers will ask you for three basic questions when directing you to the proper motor or motion control solution.

What is the stroke or displacement required

What is the force or thrust required?

At what duty cycle do you plan on operating the motor?

Travel Distance

The travel distance is the first piece of information needed to unlock any specification, because a solution to move a few microns would utilize different motion technology from an application requiring several meters of travel. In addition to understanding the total travel required, it would be necessary to determine whether the travel is oscillatory, constant velocity, or the motion profile is defined by a pick-and-place application. Oscillatory systems typically will move back and forth at a specific frequency or range of frequencies. While constant velocity systems either need to operate for a known distance or time at a constant velocity, or they need to get a payload up to a velocity, in these cases the distance and time to accelerate up to the velocity needs to be understood and accounted for in the overall displacement. With this information you can determine the acceleration necessary to make the move. To learn more about calculating acceleration you can read our white paper about calculating acceleration for linear motion.

Force

The next step is determining the amount of thrust or force required. Force is simply the amount of acceleration multiplied by the mass of the moving object. If the motion is horizontal, this equates to the mass of the payload added to the mass of the moving part of the linear motor or stage and multiplied by the amount of acceleration required by the motion. Vertical applications must add or subtract the acceleration due to gravity depending on the direction of motion.

motion control specification formula

Duty Cycle

Finally, how long is power going to be applied to the motor? Many oscillatory systems will be operating continuously, and thus would have a duty cycle of 100%, while other applications will be short bursts of power, 1 second or less, while being off for several seconds, and will have a duty cycle of less than 10%. Duty cycle is defined as the time on divided by the total time per cycle (time on + time off). Depending on the linear motor selected, the amount of force available at a duty cycle of 10% can be as much as 3 times the continuous force rating. This last piece of the puzzle helps break down the necessary components required to properly size any motion control problem.

motion control specification formula - Duty Cycle

Once these three pieces are determined, any application can be sized and verified that it is sufficient based on the specifications found on any standard data sheet.

 

About H2W Technologies, Inc.

H2W Technologies, Inc. is dedicated to the design and manufacture of linear and rotary motion products that are used in the motion control industry. The complete line of linear electric motors includes: Single and dual axis linear steppers, DC brush and brushless linear motors, voice coil actuators, and AC induction motors. Also offered is a complete line of ball screw, lead screw and belt driven positioning stages.

Other motion control products include: Limited angle torque motors for compact, limited angular excursion rotary servo applications, 3 phase brushless rotary servo motors with matching digital servo amplifiers and permanent magnet linear brakes for fail-safe, zero power braking for baggage handling and people moving applications as well as amusement park rides.

With over 75 years combined experience in the linear and rotary motion field, the H2W Technologies team of engineers offers the optimal solution to the most demanding motion control, requirements.

For other Motion Control Components, Applications, and Technology from H2W Technologies visit: http://MotionShop.com

For additional information contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail: info@h2wtech.com or visit the website at http://www.h2wtech.com

 

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Motion Control – New POSITAL Sensors – Precision Feedback for Collaborative Robots Available from Electromate!

motion control sensors for robotics

 

 

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POSITAL Kit Encoder for Servomotors and Robots 

Vaughan, Ontario, Canada — Motion Control Components — A very exciting development in the area of robotics is the development and growing popularity of so-called collaborative robots, or “cobots”. Cobots, in contrast to traditional industrial robots, are designed to interact with human workers in a shared workspace. They are typically smaller and less powerful than traditional factory robots and are equipped with a variety of proximity sensors, load sensors and other features designed to avoid dangerous collisions between the robots and the people working around them. This focus on safety means that cobots are easier to deploy in a normal factory setting, since they don’t required special fenced off operating areas. Cobots have been used to perform repetitive tasks in light assembly, packaging, materials handling and medical laboratories. Cobots have also been used to help workers avoid direct contact with environments not conducive to direct human interaction, such as high temperature environments, chemically aggressive reagents and toxic pathogens.

Enabling Technologies for the Cobot Revolution

Motion Control robot with POSITAL Sensors

Many cobots are designed to mimic a human arm, with flexible “shoulder”, “elbow” and “wrist” joints. Accurate measurement of the rotary position of these joints is central to enabling the cobots’ control system to keep track of the spatial orientation of all of its moving parts. This is typically provided through rotary encoders mounted in each of the device’s joints.

Encoders measure rotation and return a digital signal that reports the angle of rotation (absolute encoders) or rate of motion (incremental encoders) to the control system. The ‘right’ encoders for cobots need to be accurate, reliable, and compact, with excellent dynamic response characteristics. They also need to be reasonably priced. POSITAL-FRABA has responded to this challenge by developing new sensing technologies – such as magnetic and capacitive rotary encoders – that provide cobot manufacturers vital feedback for closed-loop control systems. In order to ensure that these devices meet the needs of cobot builders, POSITAL-FRABA offers products with a wide range of performance characteristics, communications interfaces and physical configurations.

POSITAL‘s kit encoders offer a unique combination of accuracy, reliability and cost efficiency. Absolute measurement versions provide 17 bit electrical resolution and multiturn position measurements with a range of more than one million revolutions.

  • Electrical Resolution: Up to 17 Bit, Multiturn: Up to 32 Bit
  • Accuracy: 0.1°
  • Compact Size: 36 mm diameter, 24.2 mm Height
  • Operating Temperature: -40 to +105°C
  • Auto Calibration − No Complex Equipment
  • Extensive Diagnostic Coverage
  • Various Programmable Parameters
  • kit_render_001

Motion Control Sensors for Robotics

 

Advantages

POSITAL’s contact free measurement technology has no moving parts and is highly resistant to shock and vibration. POSITAL’s kit encoders are available with several non-proprietary electrical interfaces including BISS and SSI for absolute measurements. Additional protocols based on the RS485 interface can be implemented.

  • Absolute Multiturn & Incremental Interface
  • Electrical Interface: BiSS C, BiSS Line, SSI, RS485
  • No Battery – No Maintenance
  • No Ball Bearings & Compact Design
  • Insensitive to Dust and Moisture
  • High Shock and Vibration Resistance

Upgrade Your Existing Motion Control Application

Making your transition from incremental to absolute position sensing easy, POSITAL provides a full line of versions that are mechanical drop in replacement for common US Digital and Broadcom (Avago) incremental kit models.

  • Same Footprints as E5 and HEDS-5500 Models
  • Various Hub Diameters from 4 mm to 10 mm (and 1/4 to 3/8 inch)
  • Identical Assembly Procedure – No Training Required
  • Magnetic Technology Which Is Generally More Robust Than Optical
  • Improved Connectivity via M12 Connector Additional Available

CLICK HERE for additional information about POSITAL Kit Encoder for Servomotors and Robots.

About Electromate:

Electromate’s Core Purpose is to help Manufacturers build better machines using differentiated automation technology. They specialize in Robotic and Mechatronic Solutions for the Industrial Automation marketplace. Respected by customers as a premiere source for High Performance Automation and Motion Control Components & Systems, Electromate® specializes in AC & DC Servo and Stepper Motors & Drives, Motion & Automation Controllers, Positioning Systems & Actuators, Feedback Devices, Gearing Products and HMI’s & Operator Displays, all supported via extensive product selection, just-in-timedelivery, dedicated customer service and technical engineering support.

More on Electromate can be found at

Website: http://www.electromate.com

LinkedIn: https://www.linkedin.com/company-beta/209277/

Twitter: https://twitter.com/Electromate

Facebook: https://www.facebook.com/electromateindustrial/

Google+: https://plus.google.com/104057418684128701566

Blog: https://electromate.wordpress.com/

Electromate Best Blace to Work

For more information on the “Best Place to Work”CLICK HERE!

To view Electromate’s new corporate video CLICK HERE

For further information on this new product or others in our extensive product portfolio, call 1-877-SERVO99 (737-8699) or e-mail Warren Osak at sales@electromate.com or visit Electromate at: www.electromate.com

 

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