Motion Control – Steinmeyer Tutorial Series – Ball Screws – Explaining Load Capacity!

Motion Control – Ball Screw Tutorial

motion control - ball screws

 


motion control - steinmeyerTutorial presented by Steinmeyer – Many engineers are confused about this topic, especially if they don’t work frequently with ball screws. So let’s take a moment to explain the terminology.

 

BURLINGTON, MA — There are generally two load capacities given for a particular ball screw: Dynamic and Static.

Dynamic Load Capacity

The dynamic load capacity (DLC) is simply a load rating. It’s the load for a (theoretical) life of 1 million revolutions (ISO/JIS standard) or for 1 million inches of travel (ANSI standard). The DLC is critical for making lifetime calculations, since the expected life goes as the cube of the ratio of DLC to actual load. So, if the load is only 10% of DLC, then the expected life is 1 billion revolutions.

But that still doesn’t mean you could run the screw with this kind of load and expect a to achieve that life! Why? The normal maximum operating load of a general use ball screw is about 30% of the DLC. (Above that, the elastic deformation of the balls and races is too large, which may cause excessive wear.) So, if you run a ball screw with a load equal to its DLC, you may not get as much life as you expect.

Static Load Capacity

The static load capacity (SLC) indicates the load above which the screw may be damaged. Staying below SLC ensures that balls and races don’t suffer brinelling (or plastic deformation). This is critical! But bear in mind that a ball screw may be damaged in other ways with loading below the SLC: you could easily tear off the flange of the nut, snap the bearing or drive journal of the screw, or even collapse it from exceeding the buckling load.

About Steinmeyer

Steinmeyer is the world’s longest continuously-operating manufacturer of commercial ball screws. In the realm of linear motion control, our company has become synonymous with precision, innovation, and exacting standards of quality.

Steinmeyer’s extensive product line is used widely in drive systems for industrial machines as well as precision positioning in optical instruments, medical devices, and mechatronic applications.

Contact Steinmeyer for further information on their extensive product portfolio:

781-273-6220

infoUSA@steinmeyer.com

Visit Steinmeyer.com

Steinmeyer Ball Screw Resource Center


See this and other Motion Control Ball Screws, Stages, Technology Notes, Custom Components from Steinmeyer featured on:

http://MotionShop.com

http://AllMotionBlogger.com

http://Automation-Blogger.com

http://MotionControlBlogger.com

http://motioncontrolBuyersGuide.com

http://MotionControlWeb.com

http://MotionShop.net

motion control - steinmeyer

Steinmeyer Motion Control Videos

Steinmeyer Motion Control Ball Screw Blog

Motion Control – Motorized Yaw-Pitch-Roll Stages Available from OES!

Motion Control – Yaw-Pitch-Roll Stages

motion control - yaw, pitch, roll stages

 


motion control - oesThe Roll axis (top stage) has cross roller guides and a range of travel of +/- 15 degrees and the 65 mm x 65 mm table has a precise pattern of threaded holes for fixtures or tooling. This stage has an accuracy of 0.05 degrees and repeatability of +/-  0.01 degrees and the total center deflection for all axes is 0.03 mm. The rotation center height is 50 mm.Van Nuys, CA – — Motion Control – Three new high accuracy Yaw-Pitch-Roll stages have been introduced by OES (Optimal Engineering Systems, Inc.), the YPR100-10-15-01 (stepper motor driven – pictured), the YPR100-10-15-02 (brushless servo motor driven) and the YPR100-10-15-03 (DC servo motor driven). These Yaw-Pitch-Roll stages are ideal for the precise measurement of compound angles or the curvature of an object. The Yaw axis (bottom stage) is capable of rotation of large angles and features a 180:1 ratio gear. The positional accuracy is 0.05 degrees and repeatability is +/- 0.01 degrees. The Pitch axis (middle stage) has cross roller guides and a range of travel of +/- 10 degrees and has an accuracy of 0.05 degrees and repeatability of +/-  0.01 degrees.

The Pitch and Roll axes are equipped with end of travel limit switches. The yaw axis has a HOME signal for initialization. Additionally all axes have a calibrated indicator to display the angle of rotation. The maximum speed with stepper motors is 14 degrees/second and 90 degrees/second with servo motors.

The knobs of stepper motors can be replaced with optional optical encoders for position verification.  The YPR100-10-15-02 and YP110-10-03 feature servo motors and optical quadrature encoders for very precise closed loop operation and greater speeds.  The YPR100-10-15 stages can be ordered plug-and-play with a fully a compatible multi-axis motion controller from OES.

About OES – Optimal Engineering Systems, Inc. (OES) is a manufacturer of motion control products including: Stepper motor controllers and drivers, solenoid electronics, and positioning stages and slides. Applications include: Animation, automated assembly systems, automation, CNC machines, flight simulation, inspection systems, linear and rotary stages, machine tools, medical devices, motion control camera boom systems, optical comparators, CMMs, pan-tilt gimbals, PCB assembly & inspection, pick-and-place, positioning stages, robotics, scanners, security cameras, telescope drive mechanisms, time-lapse photography and winders.

Some of the industries OES serves are: Aerospace, Astronomy, Chemical, Communications, Educational Institutes, University, Colleges, Government Agencies, National Labs, Manufacturing, Medical, Metrology, Military, Motion Control, Museum, News Agencies, Semiconductor and Test Equipment. Optimal Engineering Systems, Inc’s. competitive advantage is its state-of-the-art in-house manufacturing facility in North America enabling OES to supply clients with custom designed orders or high volume just-in-time deliveries globally.

For additional information, contact sales team at: OES, 6901 Woodley Ave.; Van Nuys, CA 91406; Telephone: 888-777-1826 or +1 818-222-9200, FAX +1 818-436-0446 or E-Mail: sales@oesincorp.com or visit the website at http://www.oesincorp.com


See this and other Motion Control Components from OES (Optimal Engineering Systems, Inc.) featured on:

http://MotionShop.com.com

http://AllMotionBlogger.com

http://Automation-Blogger.com

http://MotionControlBlogger.com

http://motioncontrolBuyersGuide.com

http://MotionControlWeb.com

http://MotionShop.net

http://Catalogs-MotionControl.com
http://Catalogs-MotionControl.com

motion control - oes

OES is on Facebook

OES is on TWITTER

OES Videos

Motion Control – Linear Servo Amplifier

Motion Control – Linear DC Servo Amplifier

motion control - servo amplifier

 


motion control - h2wAmplifiers will be preset to match the continuous and peak current specifications of any H2W voice coil motor. Available from stock for immediate shipping.Santa Clarita, CA —– Motion Control – H2W introduces a new DC Linear Servo Amplifier (LCAM 5/15) that is ideally suited to drive our complete line of voice coil linear actuators. Linear amplifiers allow the current to flow continuously to the motor which prevents any dead-band issues that occur in many PWM type amplifiers. Additionally, linear amplifiers have low EMI, and no audible noise that also can be found in many PWM type amplifiers. Therefore because of their high current loop bandwidth, coupled with a low EMI, this leads to a smooth motion profile, which makes linear amplifiers the best choice for high precision applications. They are often used in precision stages to drive linear motors or voice coil actuators in semiconductor, medical, and optical equipment, since most voice coil actuators have very low inductance windings (less than 1 mH), this makes a linear servo amplifier the preferred method to drive voice coils..

Features:

  • – Designed for Low Noise Operation
  • – High Output Current: 5A Continuous Output, 15A Peak Output
  • – Wide Power Supply Range: +24 to +70 Volts DC
  • – Wide Bandwidth: 6.5kHz (90 Degree Phase Shift)
  • – Current or Velocity Mode Operation
  • – Amplifier Over-Temperature Protection
  • – Amplifier Enable Input
  • – Fault Indicator Output
  • – Adjustable DC Offset Voltage

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 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


See this and other Motion Control Components from H2W Technologies featured on:

http://LinearmotionBlogger.com

http://MotionShop.com

http://AllMotionBlogger.com

http://Automation-Blogger.com

http://MotionControlBlogger.com

http://MotionControlBuyersGuide.com

http://MotionControlWeb.com

http://MotionShop.net

http://Catalogs-MotionControl.com

http://Gotcha-Stick.com

http://MotionControlMarketing.com

motion control- h2w

H2W YouTube Videos

Visit our Blog