How does temperature affect ball screw assemblies?

Reprint of Danielle Collins post, Linear Motion Tips, on Friday, December 11, 2015

As an integral part of industrial machines and processes, ball screw assemblies often operate in environments with elevated temperatures. Heat can be generated by other mechanical and electrical components in the machine, and in some cases, is a byproduct of the process itself. And, like other motion products with sliding or rolling friction, ball screws generate heat of their own as they run. This heat, and especially the change in temperature that occurs over time, can have a detrimental influence on the screw’s function. But there are ways to mitigate heat and reduce its effect on life and accuracy.

Operating temperature recommendations for ball screw assemblies vary among manufacturers, but the typical upper limit for the most common ball screws is 80° C for short, instantaneous exposure, and 50° C for continuous duty. For standard annealed screws, a temperature over 100° C can cause a decrease in tensile strength and should be discussed with the manufacturer.

Click on the following link to view this complete article-

How does temperature affect ball screw assemblies?

maxon’s New BLDC Sterilizable Gearmotor EC 19 and GP 19M

High power up to 120 W, speeds up to 100,000 rpm, sterilizable 1000 times.

Maxon EC19 and GP19M Sterilizable Motor

Maxon EC19 and GP19M Sterilizable Motor

With its modular construction, this new brushless DC motor is available in three performance classes: the cost-optimized EC 19 at 60 Watt, the strong and high-speed EC 19 at 120 Watt and the sterilizable high-end version EC 19 at 120 Watt. The internals of the drives are responsible for their individual characteristics:

  • The EC 19 at 60 W is equipped with a magnetic circuit that is designed for speeds of up to 80,000 rpm. The maximum continuous torque is 12 mNm and the motor contains no Hall sensors.
  • The EC 19 at 120 W has been designed for speeds of up to 100,000 rpm and delivers a high continuous torque of 24 mNm. Versions with and without Hall sensors are available.
  • The EC 19 Sterilizable at 120 W may be sterilized in an autoclave 1000 times. With a maximum permissible speed of 100,000 rpm and 24 mNm continuous torque, this drive also withstands high temperatures and harsh steam cycles. This is achieved through careful selection of materials and through protection of the components such as in the hermetically sealed rotor magnet.

With maxon motor’s winding technology, it is possible to offer various voltage versions. The stator has been designed without slots. Therefore, no cogging torque occurs resulting in excellent control properties and extraordinarily smooth running. Together with an optimally balanced rotor, low-noise and low-vibration operation is easily achieved.

maxon’s new sterilizable planetary gearhead, the GP 19 M is ideal for applications requiring very high speeds – input speeds of up to 40,000 rpm. To accommodate such high speeds, the toothing and materials have been especially designed to minimize friction. A key demand placed on the material is 1000 sterilization cycles. Worth noting is the no-need to disassemble the motor for the sterilization process.   The new 19 mm servo motors are particularly suitable for surgical and dental devices, such as arthroscopic shavers and bone drills. There is also a focus on respirators and CAD/CAM spindle drives.

Click on the following link to view the specification on the sterilizable EC 19 motor and GP 19M planetary gearbox.

The complete Maxon catalog can be viewed at the following link:   Maxon 2015/2016 Complete Catalog.
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:  Maxon, maxon motor, Electromate, Servo Motor, Sterilizable Motor, EC19, GP19M, Brushless Motor, BLDC Motor

Three critical factors for servo motor sizing

Reprint of December 30, 2015 Linear Motion Tips article from Design World


Servo motor sizing is often done with the help of a manufacturer’s sizing program, but it’s important to understand the three most critical factors—speed, torque, and inertia—to ensure you select the best-fit motor for the application.

Selecting the right servo motor for a linear motion system is a complex task, beginning with initial assumptions and component selections, which must be checked through a series of calculations and, in most cases, repeated over several iterations until a suitable combination of motor and mechanics is found. Most motor manufacturers offer online sizing tools that make the process easier, ensure that the best components are selected, and help preserve the design engineer’s sanity. But as a designer, or even an end user, it’s important to have an understanding of the three critical parameters of servo motor sizing: inertia, speed, and torque.

Click on the link below to view the complete article.

Three critical factors for servo motor sizing

 

Theory, Application & Operation of Frameless Motor Technology. Live Webinar.

February 23, 2016  11:00 AM ET

Register to watch the webinar on or after February 23.

For many years there seems to have been an engineering mystique surrounding the integration of frameless motor part sets into high performance machine design. This has kept many machine design engineers from jumping in to embed these power and torque dense motor types into their applications.

This webinar will focus on the integration of frameless motors into practical machine design challenges. We will touch on the background and use of embedded motor components, typical application overview, performance improvement expectations, typical design and installation best practices, drive amplifier and feedback considerations, and machine system thermal concerns.

We will also review some basic tools available to help design engineers optimize frameless motor performance in customer machine applications.

Meet the Speaker:

Tom S. Wood Tom S. Wood
Motor Product Specialist
Kollmorgen
Tom is the Frameless Motor Product Specialist at Kollmorgen. Tom has worked with Kollmorgen for over 30 years in various roles integrating motion control solutions as Machine Designer, Servo System Customer, Manufacturers Representative, and High-Tech Distributor.

Register at the link below to watch the webinar on or after February 23.

Webinar Registration

Tags:   Frameless Motor, Direct Drive Motor, Embedded Robotics, Automation, Servo Motor, BLDC Motor, Kollmorgen, Webinar, Electromate, Motion Control

 

Introducting Wago’s Automation and Connectivity Solutions

WAGO’s automation product line features flexible fieldbus-independent solutions for decentralized automation tasks. Wago offer a range of programmable controllers in various performance classes for easy control of all automation tasks.

WAGO’s I/O systems, interface modules, power supply and surge protection systems are employed when applications demand high performance, computing power and 100% safety and reliability, such as applications in the manufacturing industry, process engineering, building automation and, in all safety-related and hazardous areas such oil and gas production and mining operations.

Why use WAGO I/O?

  • Over 400 I/O and Specialty Modules
  • Intrinsically safe I/O
  • IP20 & IP67 solutions for harsh environments
  • Network Independent
  • Powerful Programmable Fieldbus Controllers with feature rich programming software
  • Built in WEB Server
  • Small footprint
  • High quality K BUS signal transmission technology
  • High qualtity interconnects

Click on the following YouTube link to view a library of Wago Product Video’s.

CLICK HERE to view Wago’s brochure and catalog links.

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:  Wago, I/O, Connectivity, Automation, I/O systems, interface modules, power supply, surge protection systems, fieldbus system, Electromate, Controller

 

Introducing Lintech’s MR, ARC & HRC Profile Rail Linear Recirculating Bearings

Lintech’s MR, ARC & HRC Profile Rail Linear Recirculating Bearings incorporate two or four rows of re-circulating balls arranged in a 45 degree contact angle with the raceway.  The rigidity under moment and torsional loads is increased by this design.  Larger ball size is used to enhance the load capabilities.  This design offers equal loading in all directions while providing smooth motion.  Features of the MR, ARC & HRC series include:

  • Size 15, 20, 25, 30, 35, 45
  • N, H and P accuracy grade
  • V0, V1 and V2 block pre-load
  • Short/Normal/Long block lengths
  • Normal and Flange width styles

Lintech’s family of cost-effective short-delivery Profile Rail Linear Bearings includes:

MR Series – Miniature Profile Rail Linear Guides featuring:

  • 2 rows of re-circulating balls
  • Equal loading in all directions
  • Dust proof design
  • SS bearing, rail, and balls
  • Self-lube reservoir standard

MR Series Chart

ARC Series – Standard Profile Rail Linear Guides featuring:

  • Application Rail
  • 4 rows of re-circulating balls
  • Equal loading in all directions
  • Dust proof design
  • Alloy steel bearing, rail, and balls
  • Self-lube reservoir optional

ARC Series Chart

HRC Series– Heavy Profile Rail Linear Guides featuring:

  • Heavy Load Rail
  • 4 rows of re-circulating balls
  • Equal loading in all directions
  • Dust proof design
  • Alloy steel bearing, rail, and balls
  • Self-lube reservoir optional

HRC Series Chart

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:  Lintech, Linear Bearing, Linear Recirculating Bearing, Electromate, Profile Rail, T Rail

 

New Integrated StepSERVO™ Motors from Applied Motion Products

Integrated Step Motors fuse step motor plus drive and control components into a single device. Integrated steppers offer a space-saving design that reduces wiring and saves on cost over separate motor and drive components.

AMP INTEGRATED MOTOR FAMILY

Ideally suited for applications such as packaging and labeling, automated test and measurement, automated assembly and life sciences, StepSERVO™ motors from Applied Motion Products provide the next evolution integrated step motor technology. Starting with a proven integrated motor design, we add a high-resolution incremental encoder and closed-loop servo firmware to create a motor that offers the best step motor performance available today. StepSERVO™ motors offer the same high-torque-at-low-speed and excellent holding torque characteristics of open loop stepping motors with the advantages of true closed-loop control. These advantages include the ability to create peak torques from the motor up to 50% higher than the normal torque range of the same step motor running open loop. Closed-loop also means the motor only draws current when it needs it, so step motors now run cooler than ever before.  StepSERVO™ motors feature:

  • NEMA frame size 17, 23 and 24. StepSERVO motors utilize 5000 line incremental encoders (20,000 counts/rev)
  • NEMA frame size 11. StepSERVO motors utilize 1024 line incremental encoders (4,096 counts/rev)
  • Closed-loop servo control using high torque step motors
  • High acceleration for faster machine cycles and greater productivity
  • Energy efficient, cool running
  • All-in-one compact solution
  • IP65 versions for wet and dusty environments
  • Stand-alone operation (stored Q programming)
  • EtherNet/IP industrial networking option
  • CANopen fieldbus option
  • Modbus RTU option for easy PLC/HMI connection

Click on the following link to view a 30minute YouTube Video on the StepSERVO™ integrated stepper motor.

There are three types of StepSERVO™ to choose from:

SSM integrated steppers feature:Applied Motion Products SSM23IP-3EG

  • NEMA 23 frame size motors
  • Ethernet (RJ-45) port for programming
  • EtherNet/IP industrial networking standard
  • Three motor lengths (stack lengths) available to provide the highest amount of torque in the shortest motor possible

 

TSM integrated steppers feature:

  • NEMA 11 (New!), NEMA 17 and NEMA 23 frame size motors
  • RS-232 or RS-485 port for programming and streaming commandsApplied Motion Products TSM11-1
  • Control options including CANopen fieldbus control, digital step & direction control, analog velocity mode, streaming commands and stand-alone operation using stored Q programs.
  • Three motor lengths available in each frame size to provide the highest amount of torque for each length

 

TXM integrated steppers feature:

  • IP65 rated for wet and dusty environmentsApplied Motion Products TXM24C-3CG
  • NEMA 24 frame size motors
  • RS-232, RS-485 or Ethernet port (M12) for programming, streaming commands and fieldbus/networking
  • Control options include CANopen fieldbus control, EtherNet/IP industrial networking, digital step & direction control, analog velocity mode, streaming commands and stand-alone operation using stored Q programs.
  • Two motor lengths available to provide both a lower torque and a higher torque option depending on application requirements

CLICK HERE for additional information on the StepSERVO™ motors from Applied Motion Products.


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