SIMPLY EXCHANGEABLE: READY-TO-INSTALL SERVO-HYDRAULIC AXE
Anyone with only a superfluous familiarity with fluid technology could easily underestimate the performance and intelligence of modern hydraulics, writes Dr. Steffen Haack, Executive Board of Bosch Rexroth AG, responsible for Industrial Applications and Sales Division.
Who would think that this technology is highly precise, energy-efficient, and ready today for Industry 4.0 applications? Here are six capabilities of a strong drive technology, which probably come as a surprise for many:
Micrometer precision: electrohydraulic axis controllers close the control loop decentrally, similar to electrical servo drives, and harmonize the target/actual position in real time within milliseconds. The precision of the movement solely depends on the respective utilized measuring system. In tool and plastic machines, hydraulic drives reliably position axes to a few micrometers precise.
Compact: it is often difficult to place electromechanical drives with sufficient performance in tight construction spaces. Unlike hydraulic drives they also add significant heat. Since power generation is decentralized in the power unit and since it is connected to the actuator via lines or pipes, OEMs can generate high forces even on minimal construction space. The relatively low level of heat created in the work area dissipates optimally through the hydraulic fluid.
Need-based energy efficiency: software combines the best from electrical and hydraulic systems. The decentralized intelligence in the electronic control device adjusts the rotational speed of the pump drive on demand as the consumer requires power, or it lowers it to zero. In comparison to common constant drives, this reduces the energy consumption of hydraulic power units by up to 80%. By the way: even older facilities and machines can be retrofit without major efforts to significantly reduce the energy consumption in production.
Balanced drive physics: fluid technology is not always inherently linear. Drive software for hydraulic actuators takes these particularities into consideration and harmonizes them automatically. Preprogrammed, typical hydraulic functions, e.g. synchronization or position-dependent braking, merely require the optimization of parameters within the scope of start-up. They are based on a transparent software structure and function equally on all hardware platforms.
Open and outgoing: with increasing frequency, real time Ethernet protocols in modern machines integrate all actuators and peripherals into each other. Modern motion controls for hydraulic drives support all common protocols, e.g. Sercos, EtherCAT, Ethernet IP, PROFINET RT, Powerlink and Varan. Their software is also based on open standards, e.g. IEC 61131-3 and PLCopen.With this they are an ideal match for the increasingly integrated and technology-overlapping infrastructure of modern production environments — all the way up to Industry 4.0.
Simply exchangeable: ready-to-install servo-hydraulic axes have an integrated fluid loop and are driven by the same servo drives as the electromechanical versions. Since axes are encapsulated systems, engineers must only connect power and communication cables for assembly and start-up, and start-up
AT THE HANNOVER MESSE EXHIBITION,THE SPECIALIST FOR
PLASTICS IN MOTION INTRODUCES ITS NEW SERVICE FOR TRIBO
PARTS
Those who need prototypes or special plain bearings in the
future will be able to get even faster solutions supplied by igus.
A year ago at the Hannover Messe, the expert for motion
plastics and high-performance plastics for moving applications,
presented the world’s first tribo-filament for 3D printers. Now
igus has expanded its range of offers and will now provide a 3D
printing service to its customers by delivering special parts even
faster and at very affordable prices.
From the Hannover Messe onwards, igus will offer a 3D
printing service with the in-house tribo-filament and will take
over the complete production of special
parts. “Our customers can contact us with
their 3D data and get their parts quickly and
easily printed by us,” says Tom Krause,
product manager at igus iglidur® tribo-
filament. “This is what we have been
occasionally carrying out in recent months
and now want to offer this service to all our
customers.” igus has expanded its potential
with the tribo-filament, which is 50 times
more abrasion-resistant than conventional
3D printing materials and delivers even
more unusual geometries quickly and easily.
The delivery times for printed parts are
mainly dependent on the complexity of the
components. ‘From 24 hours’ is a statement
that is also true for these igus products.
CALCULATE PRICES AND ORDER ONLINE
The service for customers is made as simple
as possible up to the finished component.
The data can be uploaded on the igus
website and the components ordered. The
prices are also determined automatically online, and similar to
the indication of the delivery time, the price also depends on the
complexity and the structure of the component. “It is also
possible for us to print components from two different plastics,”
says Krause. “That means it can print either very complicated
components in which the support material dissolves, or the
component is printed from a normal ABS and only the sliding
surfaces are made of our abrasion-resistant iglidur I180-PF.” At
the Hannover Messe, igus offers, as a first step, components such
as worm gears from this first low wear tribo-material. In the
future, complex shapes can be printed from more iglidur®
standard materials to offer users more creative freedom in their
designs.
igus’ 3D printing service enables fast delivery of tribo-plastic prototypes
AT THE HANNOVER MESSE EXHIBITION,THE SPECIALIST FOR PLASTICS IN MOTION INTRODUCES ITS NEW SERVICE FOR TRIBO PARTS
Those who need prototypes or special plain bearings in the future will be able to get even faster solutions supplied by igus. A year ago at the Hannover Messe, the expert for motion plastics and high-performance plastics for moving applications, presented the world’s first tribo-filament for 3D printers. Now igus has expanded its range of offers and will now provide a 3D printing service to its customers by delivering special parts even faster and at very affordable prices. From the Hannover Messe onwards, igus will offer a 3D printing service with the in-house tribo-filament and will take over the complete production of special parts. “Our customers can contact us with their 3D data and get their parts quickly and easily printed by us,” says Tom Krause, product manager at igus iglidur® tribo- filament. “This is what we have been occasionally carrying out in recent months and now want to offer this service to all our customers.” igus has expanded its potential with the tribo-filament, which is 50 times more abrasion-resistant than conventional 3D printing materials and delivers even more unusual geometries quickly and easily. The delivery times for printed parts are mainly dependent on the complexity of the components. ‘From 24 hours’ is a statement that is also true for these igus products.
CALCULATE PRICES AND ORDER ONLINE
The service for customers is made as simple as possible up to the finished component. The data can be uploaded on the igus website and the components ordered. The prices are also determined automatically online, and similar to the indication of the delivery time, the price also depends on the complexity and the structure of the component. “It is also possible for us to print components from two different plastics,” says Krause. “That means it can print either very complicated components in which the support material dissolves, or the component is printed from a normal ABS and only the sliding surfaces are made of our abrasion-resistant iglidur I180-PF.” At the Hannover Messe, igus offers, as a first step, components such as worm gears from this first low wear tribo-material. In the future, complex shapes can be printed from more iglidur® standard materials to offer users more creative freedom in their designs.
Bluetooth interface developed for wireless TorqSense
A BLUETOOTH INTERFACE AND ANDROID APP HAVE BEEN DEVELOPED BY SENSOR TECHNOLOGY LTD FOR ITS NON- CONTACT TORQUE SENSOR,THE TORQSENSE.
TorqSense is unusual in that it does not have to be physically connected to the shaft the torque level of which is being measured. Instead two tiny piezoelectric combs are glued onto the shaft and an adjacent radio transmitter/pickup monitors their distortion due to the shaft’s rotation, using radio frequency waves. There is no physical connection between shaft and sensor, hence no need for delicate wiring or fiddly slip rings.
Bluetooth is conceptually very similar. It is a wireless technology that allows data exchange over short distances and like TorqSense transmits uses radio waves. It is commonly found in hands-free phones and other mobile devices, so is used by many many people in their everyday lives. In the engineering and industrial worlds it is often favoured as a wireless alternative to RS-232 data cables and can connect several devices simultaneously.
Thus Sensor Technology’s new Bluetooth module brings total wireless flexibility to torque measurement. In use the module simply plugs into the TorqSense’s existing 15 way ‘D’ digital lead connector. As well as collecting the torque signal, the Bluetooth allows the transducer to be powered through the interface and also provides a USB output for connection to a PC, which allows a full version of the TorqView software to be used.
Having a Bluetooth enabled TorqSense transducer removes the need for cable runs from the sensing head to the receiver.This can make system lay out easier and even allow torque to be measured in real time in situation where it was previously impossible.
Significantly the new unit also allows monitoring of the torque signal on any device that has Bluetooth capabilities.
The Android app enables real-timing viewing of the current and peak values of torque, speed and temperature of a TorqSense reading via a standard mobile phone or tablet computer. This provides instant access to information without the need to set up a computer.