Initiative Automation, CNC and Motion Control solutions
LVD2014/35EU Low Voltage Directive
The EU rolls out new rules to prevent unfair competition, as of April 20 2016 there is a new version of the Low Voltage Directive (LVD). This new law effects electrical equipment designed for use with a voltage rating of between 50 and 1000 V for alternating current and between 75 and 1500 V for direct current, other than the certain specified equipment. This directive is designed to enhance safety and prevent unfair competition in the market, so is likely to be good news for us that manufacture equipment in the EU and bad for companies that import cheap products from the far east. Please clip below to see some of the key points:
Surface grinders with obsolete controllers can be upgraded easily
There are many older but good surface grinders around these days. Many of these have obsolete control systems, this can make the machine almost worthless once the controller has failed. The PMC4 controller is now able to directly replace many of these older controllers.
Things have moved on and your old machine can be made as good as a new with quite a modest budget. Many surface grinders have a hydraulic X axis and either a hydraulic or servo controller Y axis. Normally the hydraulic axis oscillates between two switches, but by changing the X axis hydraulic valves with a proportional valve it is possible to achieve very high accuracy and perform CNC grinding. This also makes the machine easier to operate safer and more reliable.
The old valve controlled axis had a manual speed control so the controller could not change the speed of the table between course and fine cuts. The position of the table was set using switches between which the machine would oscillate. By fitting a proportional valve the controller can precisely control the table making it possible to grind patterns into the surface, not only that by reducing the speed of the axis between course in fine cuts the quality of the finished product can be improved. For those who do not want to fit the proportional valves MAP now supports oscillating axis, making it easy to upgrade old surface grinders. There are some nice new commands in MAP that make it easy to control oscillating valve controller axis like the type used on grinders. If you have an old machine we will be pleased to advise you on how to upgrade it.
VIONiC™ series, a new family of ultra-high accuracy, incremental encoders.
Designed for the world's most demanding motion control applications, this development brings together Renishaw's renowned filtering optics with a new custom interpolation and monitoring ASIC (Application-Specific Integrated Circuit) that enhances dynamic signal processing and improves signal stability. This achievement has allowed Renishaw to create its highest performance incremental encoder system so far, at the same time combining all necessary interpolation and digital signal processing inside the read head to eliminate the requirement for additional external interfaces.
The VIONiC range has been designed to reduce overall system size to the minimum achievable for a high-performance system, whilst delivering class-leading performance in terms of cyclic error, jitter and accuracy. Customers can choose between two VIONiC read head variants. The standard VIONiC read head features a Sub-Divisional Error (SDE) of <±30 nm, a range of available resolutions from 5 µm to 20 nm, and speeds beyond 12 m/s. Alternatively for the most demanding performance requirements, customers can select VIONiCplus™ with best-in-class SDE to <±10 nm, low jitter to 1.6 nm RMS and resolutions from 100 nm down to 2.5 nm. Low SDE encoders are essential to minimise velocity ripple, which is important in constant-velocity applications such as laser scanning.
VIONiC series encoders are available with the same linear and rotary (angle) scale ranges as the TONiC™ series, such that existing customers may choose to install VIONiC as a drop-in replacement. Available scale types include metal tape, spar, and rotary rings (including ultra-high accuracy REXM). All VIONiC scales come with customer selectable IN-TRAC™ reference marks embedded in the incremental channel and dual-limit switches in the case of linear scales.
July 2016 Newsletter
Welcome to the new monthly news letter from the Automation Manufacturer's Alliance (AMA). The aim of the AMA is to promote awareness of Automation issues, including benefits, safety, power saving and quality enhancements. The AMA can provide many of the components needed by a typical automation engineer including: Electronics, motors, drives, encoders and sensors to provide a "one stop shop". We are here to help and offer to try to resolve questions you might have within 72 hours.
Staffordshire University successful research to help in the management of diabetic foot
The Biomechanics team at Staffordshire University is focused on utilising biomechanics to enhance the clinical management of diabetic foot. For this purpose a novel in-vivo mechanical testing device was developed to enable the in-depth study of the biomechanical characteristics of the soft tissues of the diabetic foot. This custom device combines medical ultrasound and dynamometry to enable real-time imaging of the soft tissues of the foot during mechanical testing.
Full story can be read in next months news letter