Friday, August 23, 2019

Vibration control system for CNC machine tools.

NUM has launched an innovative accelerometer-based active vibration control system for CNC machine tools. Primarily designed to improve machining by virtually eliminating tool head vibration, the system further helps increase productivity by maximising material removal rate (MRR) and can also provide valuable real-time feedback for predictive maintenance purposes.

Vibration damping off  (top) and on
NUM’s active vibration control system is a very cost-effective solution that provides unprecedented dynamic damping capabilities. Most competitive accelerometers on the market are only capable of low frequency sampling rates and require additional signal conditioning electronics before they can be connected – usually via Fieldbus – to the CNC or PLC system. Typically, acceleration data can only be retrieved once every 20 milliseconds, which is inadequate for vibration damping purposes on machine tools. The accelerometer in NUM’s new system is sampled every 100 microseconds, which means that it can be used for closed loop control at bandwidths approaching several hundreds of Hertz.

The small flange-mounting accelerometer transducer can easily be attached to the machine’s tool head and has a sensitivity of 0.02 g (1.96 m/sec/sec), with a measurement range of plus/minus 2 g (plus/minus 19.6 m/sec/sec). The transducer connects directly to the digital servo drive, obviating the need for any additional signal conditioning circuitry.

The active vibration control system utilises the drive embedded macros (DEM-X) option that is available on NUM’s MDLUX high performance digital servo drives. This option enables real-time macros to be embedded within the drive in order to manipulate its regulation algorithms. The output signal from the accelerometer transducer can thus be used to directly influence the behaviour of the speed servo control loop. All MDLUX servo drive modules use advanced DSP control techniques to maximise the CNC kernel-to-drive servo bus speed, and feature high loop bandwidths and special acceleration algorithms for uncompromised speed and positioning accuracy.

One of the most interesting applications of NUM’s new active vibration control system concerns Tool Centre Point (TCP) vibration due to the various vibration modes of a machine tool's mechanical structure. Until now, even if the machine is equipped with a high resolution encoder (integrated in the servo motor) it has been impossible to damp the TCP vibration, simply because it is not measured. Although complex system modelling and state-space control could possibly provide some effective results, the complexity is very high and the compensation robustness is quite weak. For example, in the case of a small parameter change, such as inertia, the effect of the compensation would be lost entirely.

However, by using NUM’s new active vibration control system to measure and dynamically alter the TCP acceleration in each of the main X, Y and Z axis directions, it is now possible to damp the vibration very accurately. Using this approach, tool head vibration can effectively be eliminated, significantly reducing tool wear and maximising the MRR of the machining process.

All acceleration data is processed within the drive in the digital domain, which means that it can be cyclically transmitted to the Flexium+ NCK and stored in the NCK buffer. The data can then be uploaded to the Windows operating system for further evaluation, or for use with NUM’s process monitoring software. It is especially useful for preventive maintenance applications, where it can provide early indication of potential machine problems before they become expensive repair tasks. Typically these include detecting spindle vibration caused by bearing problems, detecting the onset of performance deterioration such as increased friction or backlash, and detecting excessive tool wear or breakage.

#PAuto @NUM_CNC

Wireless pressure gauges contribution to major award.

The Alaska Oil and Gas Association has awarded the ‘Alaska Oil & Gas Project of the Year for Environmental Stewardship and Innovation’ to BP Alaska’s Prudhoe Bay Unit Well Operating Limits Project. The three-year programme began in 2016 and involved the field-wide installation of Emerson’s Rosemount™ Wireless Pressure Gauges at the Prudhoe Bay field, helping transform how the wells are monitored.

Rosemount Wireless Pressure Gauges contribute to decreased personnel and environmental risk by providing improved visibility into well integrity without the need to physically enter the well, protecting personnel from potentially hazardous conditions. Additionally, automated real-time data and greater process insight provide early notification of well anomalies, reducing the risk of an event.

The Alaska Oil & Gas Project of the Year for Environmental Stewardship and Innovation honours an Alaska project that demonstrates superior environmental stewardship in design, construction, or operation, and/or an innovative approach that sets a new standard for industry design, construction, or operation in Alaska.

Working closely with Emerson and PCE Pacific, Inc., BP installed more than 3,500 Rosemount Wireless Pressure Gauges on upstream wellheads at Prudhoe Bay for year-round remote pressure monitoring. Rosemount gauges were selected because of their reliability, wireless communication capabilities, easy-to-read local display and simplified installation.

The Rosemount gauges replaced existing mechanical pressure gauges that required personnel to perform manual readings on more than 1,700 wells under potentially hazardous conditions due to the extreme weather in Prudhoe Bay, which at times can reach 50 degrees below zero Celsius.

The automated wireless data provided by Rosemount Wireless Pressure Gauges offers updates at a rate of once per minute, as opposed to the once per day frequency of the mechanical gauges. The granularity and immediacy of the data has been valuable for improving well management, decreasing response times, and preventing potential events. This has also helped to reduce manual data entry. In addition, both data quality and read frequency increased over the previous manual methods.

#PAuto  #Oil @EMR_Automation @Emerson_News @AOGA @HHC_Lewis #USA

Thursday, August 22, 2019

Hand-writeable, self-laminating labels.

TE Connectivity (TE) has released the TKM and BKM series of hand-writeable, self-laminating labels.

TE’s TKM and BKM products are self-writable clear vinyl film with a permanent acrylic adhesive. Supplied with a white hand writable area which is over-laminated upon application using the clear portion of the label. TKM/BKM are hand writable which allows for on the spot labelling, protected by the self-laminating feature. These labels are available in two formats. TKM is supplied in booklet form while BKM is supplied in sheet form.

“Self-laminating wraparound labels are ideal for identification of wires, cables and pipes,” said Robin Parella Gershkoff, TE product manager. “Also, TKM and BKM products are resistant to chemicals and frequent handling, making the labels ideal to use for job site installations. The series is engineered to withstand exposure to solvents, salts, alkalis and water, while still being free from cadmium, silicone and PTFE and is not electrically conductive.”

TKM/BKM labels can withstand temperatures of minus 30°C (minus 22°F) to 120°C (248°F).

TKM booklet labels are available in 25.0mm (0.984 in.) width and in four heights ranging from 50.0mm (1.969 in.) up to 230.0mm (9.055 in.). The booklet is ideal for remote work sites when printers are not readily available.

BKM sheet labels are available in four widths ranging from 23.0mm (0.906 in.) up to 50.0mm (1.969 in.) and four heights between 38.0mm (1.50 in.) up to 230.0mm (9.055 in.).

TKM and BKM labels are fully free of substances of very high concern (SVHC), in line with TE’s compliance with the European Community’s REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) legislation.

#Pauto @TEConnectivity #REACH

Wednesday, August 21, 2019

Standard extended for safety.

The CiA 306-1 CANopen electronic data sheet (EDS) specification was first published in 2005. Its predecessor, the CiA 306 specification, was used for more than 20 years to provide an electronic description of CANopen device interface functionality. New published versions of the CiA 306 series have been extended in respect to the CANopen Safety protocol as standardized in EN 50325-5.

CANopen is one of the most successful embedded control networks. It is standardized as EN 50325-4. To simplify system design, standardized electronic descriptions are needed. The CiA 306 electronic data sheets have been used for many years. It describes the CANopen device interface functions by means of a standardized text file. In order to use it also for CANopen Safety standardized in EN 50325-5, the recently released CiA 306-1 specification introduces functional safety attributes.

CiA 306-2 specifies an Excel-based database format for CANopen device profiles. A specific profile description can be used to test a dedicated EDS on conformity. CiA’s CANopen conformance test tool requires such Excel sheets. The nonprofit CAN in Automation (CiA) association provides them.

Part 3 of the CiA 306 series describes the network variable handling and the tool integration. Originally, some contents of this document were part of the CiA 405 CANopen programmable logic controller specification. The new version introduces reference designators for the purpose of tool integration. This is especially important for Internet-based remote configuration and diagnostics.

#Pauto #Standards @CANopen 

Mobile analysis - 3D and 2D CAD Viewer.

The powerful 3D_Analyzer Viewer of CoreTechnologie (CT) comprises in the current version 4.3 a new license-borrowing function that allows to use the software for a limited time for example on a laptop. Already the inexpensive basic version of 3D_Analyzer includes 24 different interface formats, such as CATIA V5/V6, NX, Inventor SolidWorks, Creo, STEP, JT as well as FBX and OBJ. In addition, the new version also reads major 2D drawing formats.

The 3D_Analyzer professional version of the Viewer provides outstanding analysis capabilities that are usually available only in much more expensive CAD systems. For assemblies, the model comparison as well as a collision and clearance check are available. Models can also be analyzed for wall thicknesses, draft angles, undercuts and projected areas. Thus, the Viewer is the ideal tool for users who sometimes use a CAD system for viewing and detailed analysis, but in general do not design or edit the parts. The flexible viewer helps to relax the license utilization of expensive CAD licenses and thus significantly reduces costs. A special highlight of the professional Viewer is the possibility to save all imported CAD models as JT or 3D PDF files.

The future-oriented version 4.3 of the 3D_Analyzer fully supports the advanced 3D master technology. Thus CAD models from V5, NX and Creo as well as from STEP AP 242 and JT can be read including dimensions, tolerances as well as the predefined views, so-called captures. The use of the 3D Master eliminates the need for 2D drawings, since in the 3D model all information relevant for production is available and combined by means of the different captures. Among other things, intelligent 3D master models enable paperless production and avoid differences between 3D and 2D data. The clever technology is currently gaining importance for the integrated production process in the context of Industry 4.0. With the 3D_Analyzer Viewer, 3D master models can also be used on lightweight, cost-effective tablets.

#PAuto @CoreTechnologie @CoreTechnologie

Director of Technical Marketing

Industrial automation and industrial internet of things (IIoT) manufacturer Opto 22 has named Josh Eastburn as Director of Technical Marketing. In this position, Eastburn will lead the creation of useful and engaging customer content, discover and highlight Opto 22 customer applications, and work closely with industrial automation media outlets.
Josh Eastburn

“This new position builds on my interest in people as well as my experience as an automation engineer,” says Eastburn. “I’m looking forward to working more directly with customers, finding out their concerns and helping them use Opto 22’s products—especially the new line of groov EPIC® edge programmable industrial controllers and I/O—to solve their automation and IIoT challenges."

Eastburn comes to the new position after 12 years in process automation, DCS/PLC integration, HMI/logic design, engineering team leadership, and project management, most recently at Genentech. He holds a B.S. in Computer Science and a minor in Spanish from California Polytechnic University in San Luis Obispo, (CA USA).

#PAuto @opto22

Tuesday, August 20, 2019

Instrumentation scholarship.

The ProComSol Instrumentation Scholarship Program has just been inaugurated by ProComSol, Ltd. This year the award will be $1500.

According to Jeffrey Dobos, President of ProComSol, “There is a definite industry need for more technical personnel. The program is designed to support those already pursuing the necessary education to join the ranks of instrumentation professionals.”

Interested candidates should visit their site for the requirements and the application form. The deadline for submission is November 1, 2019 with the award announced on December 1, 2019. The winner can use the funds for the winter 2020 school term.

They encourage colleges and universities to promote this program to their students. Contact us for promotional materials and other help reaching your students.

ProComSol intends to continue and grow this program to make awards every semester. Hopefully both students and education administrators will take advantage of this program.

#PAuto @ProComSol