July 11, 2017 Volume 13 Issue 26

Motion Control News & Products

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Mobility Tech Ideas: Scissor lift for UTVs

The UTX Scissor lift from Innovative Equipment is designed to be easily fitted and removed from almost any utility vehicle (UTV) in approximately 3 minutes without any heavy lifting. It provides the user with a working height of 18 to 19 ft on nearly any terrain. It can be leveled on slopes up to 12 deg. It has a lifting capacity of 500 to 600 lb and enables users to take a scissor lift "where no scissor lift has gone before." Stability has been tested to five times the ANSI requirements. It also has safety features that will not allow it to be used in unsafe conditions.
See it in action.


Become a robot programmer in 87 minutes!

Learning how to set up and program a collaborative robot -- or cobot -- no longer depends on real-life access to a robot or a training class. Now everybody with a desire to learn the concepts of cobots can log in to the Universal Robots Academy and get the introduction necessary to master basic programming skills. Become a master of the cobots! (That's a pretty sweet title.)
Click here to learn more.


Multi-axis robotic controller

Aerotech’s HEX RC is a 6-axis motion controller ideal for controlling robotic systems like hexapods. It is 4U rack-mountable and compatible with the Automation 3200 (A3200) motion platform. A high-performance processor provides the intense computing power needed to run up to 32 axes, perform complex, synchronized motion trajectories, manipulate I/O, and collect data at high speeds. This unit features 6 axes of drives capable of controlling any combination of brush, brushless, or stepper motors (both current loop and servo loop closures). An optional 6-axis jog pendant permits easy, manual control of the positioning system.
Click here to learn more.


Single-rail positioning stage (H-gantry)

H2W Technologies’ latest single-rail positioning stage design is an open-frame XY positioning system. It has two bottom parallel axes with one cross axis connecting the two (H-gantry). Each linear axis uses H2W’s brushless linear motors (BLDM-B04). Each has a total stroke length of 25.67 in. (652 mm) and can generate 6.2 lb (27.8 N) of continuous force and 18.7 lb (83.3 N) of peak force, or a combined 12.4 lb (55.6 N) continuous force and 37.4 lb (166.6 N) peak force on the bottom axis. The non-contact 1-micron resolution encoders allow for precise positioning. The moving tables are guided by a precision recirculating linear ball bearing system. Additional options include a home positioning sensor, end-of-travel-sensors, and custom mounting holes.
Click here to learn more.
Watch this stage in action.


Getting a grip on precision: Mechatronics vs. pneumatics

A gripping system for small parts that is both quick and powerful -- until now, that was often only possible with pneumatics. However, recently the leading expert for gripper systems and technology has developed a mechatronics-based EGP 40 gripper that easily achieves the same performance of its pneumatic counterparts. The drive that makes this impressive performance possible is FAULHABER small brushless DC servo motors from MICROMO.
Read the full article.


Mini linear motor stage with magnetic direct drive

Motion and nanoposi-tioning industry leader PI expands its PIMag series of high-dynamics linear motor stages with a new compact positioner for automation tasks. The V-408 stage is equipped with an incremental linear encoder for direct position measurement and a high-force 3-phase linear motor drive. The V-408 features high load-capacity precision crossed roller elements with anti-creep cage assist and a zero-wear, non-contact linear motor -- ideal prerequisites for long lifetime in high duty-cycle industrial applications. The high-force linear motor achieves velocities up to 1.5m/sec. An integrated optical linear encoder provides 10-nm resolution. Two models are offered with 25-mm and 50-mm travel range.


Advanced pneumatic standard cylinders with Adaptive Cushioning System

IMI Norgren’s ISOLine is a true fit-and-forget ISO cylinder. Inside lies the new Adaptive Cushioning System (ACS), which automatically adjusts the cylinder cushioning for changing loads, so manual cushion screw setting is not required. This makes the ISOLine much simpler to install. Other benefits include lower breakaway pressure, lower minimum speed, reduced leakage, polyurethane seals that ensure efficient low-friction operation, and reduced weight (20% lighter than previous versions). All sizes supplied with magnetic piston rod as standard.
Click here to learn more.


Easily automate a simple axis of motion

The Tolomatic ACSI integrated servo/motor/ controller is now available with PROFINET Industrial Ethernet protocol, allowing engineers to design easy-to-use and cost-effective electric actuator solutions for single-axis applications. The integrated package is ideal for replacing pneumatic cylinders and automating any simple axis of motion with Siemens or other PROFINET-enabled PLCs. With built-in configurations for Tolomatic electric actuators, the ACSI integrated controller automatically configures the motor, actuator, safety limits, and other key settings inside the controller for quick and seamless integration.
Click here to learn more.


Direct drive linear motor with integrated encoder

The new SDLM-019-070-01-01 direct drive linear motor is the latest addition to the series of zero-backlash, zero-cogging, high-acceleration, high-speed, high-resolution, long-life linear servo motors from Moticont. Also known as an electric cylinder, this compact direct drive linear motor is just 0.75 in. (19.1 mm) in diameter and 2.75 in (69.9 mm) long. Protected inside the motor housing, the linear optical quadrature encoder is directly connected to the shaft for the greatest possible accuracy. This unit has a stroke length of 0.500 in. (12.7 mm), a continuous force rating of 9.7 oz. (2.7 N), and peak force of 30.7 oz (8.5 N).
Click here for more information on this product series.


ABB's general-purpose motors combine quality, cost efficiency, and industry experience with short lead times

ABB has launched its N-series general-purpose motors to provide a high level of energy efficiency, reliability, and safety in applications where a highly customized motor in the 50- to 8,000-kW power range is not needed. The motors use cost-effective pre-packaged designs to meet the same high quality standards as all ABB motors but with lead times that are several weeks shorter. An easy-to-use online selection tool called "MachSize" simplifies motor configuration. Another tool called "DocStage" is a web-based system for sharing and managing documentation.
Click here to learn more.


New nanopositioning solutions catalog debuted at LASER 2017

Motion and precision positioning systems expert PI (Physik Instrumente) issued a catalog on newly introduced precision motion solutions for photonics, robotics, microscopy, and highly accurate industrial automation applications at LASER World of PHOTONICS held in Munich, Germany, in June. The 80-page catalog covers products and custom-engineered systems, including automated photonics alignment engines, linear motor stages, piezo actuators, air bearings, hexapod Stewart platforms, and high-performance motion controllers.
Get your nanopositioning systems catalog today.


Get 'V8 power' and nanometer precision positioning with PI's new piezo linear motor

Motion control and piezo systems expert PI (Physik Instrumente) introduces a new robust OEM walking motor drive, the N-331, with its configuration rooted in existing patented piezo actuator technology and a patented piezo stepping motion principle design. Unlike traditional electromagnetic motors, piezo motors do not create magnetic fields, nor are they influenced by magnetic or electric fields. The new design is ideal for use in high-end applications that require extreme precision and durability. High push/pull and holding forces qualify this non-magnetic drive as the fastest and strongest of its size class.
Click here to see it in action.
See the specs, datasheet, and more information.


Mike Likes: Small brushless motor with big performance

The new 3274 BP4 brushless DC motor series from FAULHABER is overload‐resistant and operates without wear‐prone mechanical commutation, giving the 3274 BP4 longer operational life than conventional micro DC motors. Weighing just under 320 grams, the 3274 BP4 brushless servo motor packs massive continuous torque of 165 mNm, making it ideal for applications where high power and dynamic start/stop operation with the lowest possible weight are crucial.
Click here to learn more.


Rotate an object to a precise angular position

Goniometer stages can measure angles of objects such as crystals or move an object to a precise angular position along an arc in relation to a fixed point in space. Two goniometer stages mounted in an alpha-beta configuration (stacked) can rotate an object around a fixed point in space on a spherical surface. Optimal Engineering Systems (OES) offers stacked, precision-aligned goniometer stages like the compact AK110-15-10 with a rotation center 50 mm above the upper stage. Goniometers are used for identifying crystals, examining cutting edges of medical instruments, estimating hyperspectral bidirectional reflectance, gloss measurements, measurements of radiation patterns of LEDs, directing lasers, aligning mirrors, and manufacturing quartz oscillator plates using quartz cutting X-rays.
Click here to learn more.


Compact hexapod for industrial alignment applications

PI has added a higher performance model to its range of compact hexapods. The new H-811.i2 provides twice the velocity along with sensor resolution up to eight times higher compared to the current H-811.D2 miniature hexapod. The compact size, robust design with low-friction ballscrews, brushless motors, and powerful controller with multi-axis alignment capabilities make the new hexapod an ideal tool for high duty-cycle alignment applications in optics, automotive, and photonics applications.
Specifications, datasheets, more information >
Read technical articles and applications of PI hexapods >


Chevrolet debuts its first 9-speed auto with 2017 Malibu

Chevrolet's first nine-speed automatic transmission is making its debut in the 2017 Malibu and will be available in the 2017 Cruze Diesel and 2018 Equinox, moving forward the company's legacy of multispeed transmissions designed to optimize efficiency, performance, and refinement.

The General Motors-developed Hydra-Matic 9T50 nine-speed is paired with an available 2.0L Turbo engine in the Malibu, contributing to an EPA-estimated 33 mpg highway -- a 3 percent increase over the 2016 model with the eight-speed automatic.

Chevrolet's first nine-speed automatic transmission, the Hydra-Matic 9T50, makes its debut this year.

 

 

"In addition to improved fuel efficiency, the 9T50 offers a strong overall balance of performance and refinement that customers will feel at all driving speeds," says Dan Nicholson, vice president, Global Propulsion Systems. "By the end of 2017, Chevrolet will offer four models with the new nine-speed."

The new nine-speed has a wider 7.6:1 overall ratio -- the difference between the first gear ratio and the top gear ratio -- compared to the eight-speed transmission, with a "deep" 4.69 first gear that supports excellent off-the-line acceleration and a "tall" 0.62 top gear for low-rpm highway cruising. That balance aims to optimize acceleration and fuel economy and reduce engine noise during cruising.

"The smaller steps between the gears, compared to the eight-speed, enable smooth, almost imperceptible upshifts for excellent refinement," says Nicholson. "No matter the engine torque or vehicle speed, the 9T50 is always in the perfect gear."

2017 Chevrolet Malibu.

 

 

The new transmission also supports stop/start technology that can help save fuel by allowing the engine to shut down in certain stop-and-go driving conditions.

New for GM: Selectable one-way clutch
Developed for the tight packaging requirements of transverse propulsion systems, the new 9T50 nine-speed automatic has an on-axis design, where all the gears are in line with the crankshaft, and GM's first application of a selectable one-way clutch. Both features help reduce the package size, making it roughly the same size as a six-speed transmission.

The selectable one-way clutch, which can hold torque or freewheel, depending on the desired operating mode, contributes to a smaller overall size by eliminating the need for an additional clutch pack.

"The selectable one-way clutch is one of the biggest enablers of the 9T50's balance of efficiency and refinement," says Steve Saia, chief engineer.

Shift smoothness
For precise and smooth shifts, a specific strategy is used in the selection of the gearsets, clutches, and torque converter. Five planetary gearsets are used with four stationary clutches and three rotating clutches, saving space compared to freewheeling designs. Gears change from second- to ninth-gear ratios with precise clutch-to-clutch shifting, where the clutch is engaged in one gear at exactly the same time it is released from another.

The first-to-second upshift is a freewheeling shift. The second-gear clutch engages while the first-gear one-way clutch spins freely. The aim is to provide greater refinement at lower vehicle speeds.

Additionally, this planetary-type automatic transmission employs new torque-converter technology to help it deliver smooth take-off performance and additional refinement. The converter features a hyper-elliptical oval cross-section that reduces the thickness of the torque converter, keeping the overall width of the engine and transmission as narrow as possible for packaging advantages.

The single-plate lock-up clutch uses GM's electronically controlled capacity clutch (ECCC) technology to dampen engine vibrations and ensure smooth operation.

9T50 nine-speed automatic gear ratios

  • First: 4.69
  • Second: 3.31
  • Third: 3.01
  • Fourth: 2.45
  • Fifth: 1.92
  • Sixth: 1.45
  • Seventh: 1.00
  • Eighth: 0.75
  • Ninth: 0.62
  • Reverse: 2.96

Shift controls and active oil management
Shift controls include automatic grade braking that selects a lower gear to help maintain desired vehicle speed when coasting or braking on a downgrade. This takes advantage of engine braking to help prevent unwanted acceleration and can help reduce the need to brake during a descent. The control module receives input that monitors brake pedal usage, vehicle acceleration, throttle position, grade, and whether a trailer is connected to the vehicle.

The 9T50's hydraulic system is controlled electronically to deliver the pressure and volume required for various operating temperatures for optimal efficiency. The valve body side cover acts as an internal expansion tank, holding the excess oil until it is required and then returning it to the sump when needed.

The 9T50 is filled with DEXRON-VI fluid that does not require changing under normal driving conditions. It was developed for a more consistent viscosity profile, consistent shift performance in extreme conditions, and less degradation over time.

Seamless stop/start performance
A unique accumulator within the new nine-speed transmission enables virtually seamless stop/start transitions. The accumulator stores energy for almost imperceptible engine restarts, while GM-designed transmission software calibrated for those restarts further contributes to smooth takeoffs.

Transmission control module
GM-developed transmission control logic resides in a 32-bit transmission control module (TCM). This module commands all shifting events to provide smooth and precise ratio changes. The TCM also monitors transmission performance and compensates for normal wear in components such as clutch plates so that performance remains consistent. Located outside the transmission to reduce overall packaging size, the module reduces manufacturing complexity and requires only vehicle-specific calibration to be added to the core program. The TCM also enables manual shift control and grade logic.

Source: Chevrolet

Published January 2017

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