July 2019 - MotionShop

Monthly Archives: July 2019

Motion Control – Precision “Zero Clearance,” Smooth Sliding Partial Extension Rails Available from LM76!

July 29, 2019 Linear Bearings, Linear Guide Systems, Linear Rail Systems, Linear Slides

E. Longmeadow, MA Motion — Control Components – Linear Motion – As the exclusive distributor of SAIBO Linear Motion Systems in the US, LM76 is offering the SAIBO TPE28 and TPE43 series of Partial Extension Rails. These compact, precision, smooth sliding rails are assembled with a zero clearance. The TPE28 and TPE43 Partial Extension Rail series are created using a “C” shaped external rail and an internal slider. Two rows of steel ball bearings (one on the top and bottom of the slider) travel in ball cages on hardened “V” shaped ways with four points of contact. These Partial Extension Rails are Ideally suited for applications requiring smooth motion such as: Material handling, rail systems in trains, aircraft, ships, trucks, and autonomous vehicles, wafer handling, delicate parts transfer, assembly, testing, laser machining and drilling.

The TPE28 series of Partial Extension Rails consists of 14 rails with stroke lengths from 72 mm (2.834 in) to 601 mm (23.661 in.) and supporting loads from 1224 N (275 lbs) to 15,166 N (3409 lbs) when two rails are mounted in parallel and the load is uniformly distributed between the rails. The TPE43 series of Partial Extension Rails consists of 23 rails with stroke lengths from 123 mm (4.842 in) to 1013 mm (39.881 in.) and supporting loads from 3192 N (717 lbs) to 48460 N (10,894 lbs) when two rails are mounted in parallel and the load is uniformly distributed between the rails. Stroke lengths (extension) are typically 51% of the length of the assembly.

These industry standard Partial Extension Rails are ideal for use in new and existing applications. Both the TPE28 and TPE43 Partial Extension Rails have a maximum working speed of 0.8 m/sec. (xxx in/sec )and have an operating temperature range of -20OC (-20OF) to 120OC (-20OF). For complete information on the assembly, loads, and stroke lengths for each series and additional details consult the factory.

LM76 also manufacturers a broad variety of FDA & USDA compliant bearings and shafting, in inch sizes of .25 inches to 1.5 inches, and a FDA & USDA compliant profile rail and slide system that can easily be integrated into new and existing applications. The bearing options include: Self-lubricating FDA & USDA compliant Teflon® composite bearings in a 304 stainless steel shell, and lower cost bearings with a ceramic coated shell and FDA & USDA compliant liner. Bearings are available in closed and open configurations, and are drop-in replacements for all inch sized linear ball bearings.

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

And say, “I saw it on MotionShop.com, “The Motion Control Home Page.”

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

Motion Control – Power-Off Brakes for NEMA 17 & NEMA 23 Servo and Step Motors!

July 24, 2019 Brake - Servos & Steppers

Motion Control

Greenville, DE —-Motion Control Components – The MPC is a power-off brake module with an output shaft. The unit mounts directly on to a NEMA C-Face servo or stepper motor and the output can also be coupled to a NEMA C-Face gear reducer. This brake is designed to decelerate or hold an inertial load when the voltage is turned off. When voltage is applied, the friction disc is released and the brake is free of torque. This power-off brake is best suited for parking brake applications used to hold a load in position, and is ideal for creating brake motor packages for small servo & stepper frame motors. Key Features:

Mounts directly to any NEMA 17 or NEMA 23, frame servo or step motor
Includes all necessary mounting hardware
12VDC, 24VDC, 90VDC or 120VAC windings available
12″ lead wire termination
Low current consumption
Output shaft can be coupled to any NEMA 17 or NEMA 23, frame servo or step motor
Optional metric input & output diameters

More information on these New Motion Control Power-Off Brakes for NEMA 17 & NEMA 23 Servo and Step Motors available from Servo2Go.com can be viewed at: https://www.servo2go.com/product.php?ID=100229&cat= These and other Motion Control Products are available through www.Servo2Go.com For further information on this new product or others in our extensive product portfolio, call 1- 877-378-0240 or e-mail Warren Osak atwarren@servo2go.com or visit Servo2Go.com at: www.Servo2Go.com

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

July 12, 2019 Application Stories, Bearings, Bearings - Linear, Bearings - Linear - Seals, FDA/USDA/3A-Dairy Compliant, Linear Bearings, Linear Bearings - Seals (Scraper)

Linear Motion Control

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.

About LM76

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

Motion Control White Paper – Unlocking the Linear Motion Specification Query

July 9, 2019 Tutorials, White Papers

Motion Control White Paper

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

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.

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.

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

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

July 1, 2019 Encoders, Encoders - Absolute, Encoders - Explosion Proof, Encoders - Harsh Environment

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

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

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.

MotionShop.net

Monthly Archives: July 2019

Motion Control – Precision “Zero Clearance,” Smooth Sliding Partial Extension Rails Available from LM76!