New flagship range of measuring arms

Eight years after the launch of the first Romer Absolute Arm, Hexagon’s Manufacturing Intelligence division has unveiled the latest Absolute Arm range, complete with a ground-up redesign.

A standout feature of the new Absolute Arm is its modular wrist design that allows both the RS5 laser scanner and pistol grip to be completely removed, facilitating easy probing in tight spaces. When reattached for laser scanning applications, a variety of grip sizes are available to ensure the best fit for every user. The newly developed wrist also features a display screen that allows for measurement result oversight, profile switching and calibration right at the point of measurement, reducing time spent switching attention between the arm and its control computer.
“Over the past eight years we’ve received a lot of positive and constructive customer feedback, and hopefully people will see how this has informed our design,” says Anthony Vianna, product manager for the Absolute Arm range. “Many customers told us they needed to measure in smaller and smaller spaces, like cavities or inside complex fixtures, and it was that sort of direct-from-the-user intelligence that drove us to create the most compact scanning configuration on the market today.”
The new Absolute Arm models are also available in a six-axis version designed for dedicated probing applications. Within this category is the new Absolute Arm Compact, with accuracy now to within just 6 µm. The full Absolute Arm range is available across seven sizes, with measurement radii from 1.2 to 4.5 m, and three levels of accuracy, resulting in 36 unique arm configurations.
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30th anniversary for metrology specialist

Midland Metrology says it is marking the company’s 30th anniversary this year with continued growth and expansion.

Trading locally, nationally and internationally, the company is a supplier of both new and used precision measuring equipment. A Midlands-based showroom hosts a wide variety of machines, including profile projectors, video machines, hardness testers and granite products, all available to view and demonstrate.
Having recently taken on three new members of staff, Midland Metrology is announcing the launch of its new, purpose-built inspection room, which is in addition to the company’s existing inspection and calibration facility. The latest addition to the team, Andy Holt, formerly of AC Inspection, will be heading up the new inspection department. He has a total of 25 years’ experience in quality and inspection, and with his knowledge and expertise in this field, is well equipped to run the new department.
All types of subcontract inspection and measurement work is undertaken by Midland Metrology, including machined parts, pressings and fabrications. The service includes fully detailed spreadsheet reporting. The company says it happy to discuss any specific requests and solve any measurement issues.
Midland Metrology’s showroom in Coventry is within easy reach of the M6, M1 and M40 motorways. Visitors can come along and meet team members, who will be pleased to demonstrate the company’s capabilities and discuss any inspection and measurement requirements. All quotations are provided without obligation.
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Sino-UK smart metrology centre

The University of Huddersfield’s £40m EPSRC Future Metrology Hub has joined Shanghai University to build a new Sino-UK smart metrology centre in China
Senior delegates from Shanghai Jiao Tong University (SJTU), including its vice president professor Xi LiFeng, recently paid a fact-finding visit to the EPSRC Future Metrology Hub, located in the University of Huddersfield’s Centre for Precision Technologies, and met its director and professor of precision metrology, Dame Xiangqian (Jane) Jiang (pictured).

University of Huddersfied, Director of the Future Metrology Hub, Professor Jane Jiang.

During the visit, the University of Huddersfield’s vice chancellor, professor Bob Cryan, signed a memorandum of understanding with professor Xi. The memorandum laid a grounding for future international co-operation in scientific research and exchange programmes for students and teachers to take place between the two institutions in the field of metrology. Also planned in the near future is a visit to SJTU by professor Cryan and the university’s pro-vice chancellor, international, professor Dave Taylor.
Professor Xi expressed his university’s keen interest in building a collaborative centre in Shanghai with the EPSRC Future Metrology Hub.
“The Future Metrology Hub is a leading research centre in metrology whose expertise is well recognised in academia and industry,” he said. “SJTU, with its strengths in engineering, is looking forward to complementing research interests and strengths with the University of Huddersfield’s Future Metrology Hub to build a world-class metrology centre in Shanghai that can serve the manufacturing industry in China and the UK.”
According to the 2018 Academic Ranking of World Universities, SJTU is 29th in the world for engineering, while also being one of China’s top research-oriented institutions, and the University of Huddersfield said it was honoured to welcome its visitors to the campus.
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Optical co-ordinate measuring system unveiled

Alicona has unveiled its latest optical 3D focus-variation measuring instrument, the µCMM.

The µCMM has been designed to be the most accurate, purely optical micro-coordinate measuring system in its class. Users combine advantages from tactile co-ordinate measuring technology and optical surface measurement to measure the dimensions, position, shape and roughness of components with just one sensor. The µCMM is said to offer high geometric accuracy of several optical 3D measurements in relation to each other, enabling the measurement of small surface details, including precise determination of position, in a short time.
Users measure both surface roughness and GD&T features with tolerances in the single-digit µm range. The spectrum of measurable surfaces includes all common industrial materials and composites, including matt and polished reflective components. Simple operation is implemented by single-button functionality, automated measuring sequences and ergonomic operating panels. Air-bearing axles with linear drives enable wear-free use and high-precision, fast measurement.
The Alicona µCMM is designed for easy, flexible and expandable use by multiple operators.
This ambition is implemented by a series of options that extend the application range of the optical CMM and maximise fields of use in production measurement technology.
The motorised ‘Real3D Rotation Unit’, for example, turns the three-axis system into a five-axis system and enables
users to measure components from several, arbitrary perspectives. This capability allows contactless measurement of surface features such as flank angle, chamfer angle, thread pitch or undercuts.
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Fast countersink measurement routines

Third Dimension has launched a countersink measurement solution for its GapGun range.


Said to be the first of its kind on the market, the solution can calculate the dimensions of a countersink hole to accurately predict the flushness of fasteners once fitted. What’s more, the innovation can operate in real time on the production lines of aircraft, cars and vans, and in energy and marine markets.
Last year, in the commercial aerospace industry alone, some 1481 planes were manufactured with a total estimated 296 million countersinks. The average requirement is to measure 5% of each aircraft’s 200,000 countersink holes, meaning 10,000 countersink holes would have to be measured for every commercial aircraft produced. Done manually, these checks rely heavily on the competencies of the operator and are extremely time consuming. Conversely, Third Dimension’s patented systems takes just a couple of seconds per measurement, with no possibility of operator error.
The GapGun Countersink Inspection System enables the prediction of fastener flushness much faster and more accurately than mechanical gauges, with the addition of an auditable data trail. Importantly, tolerance bands can be preset, against which the measurement is recorded, before the result can be read on screen or automatically sent to a PC to enable comparison and analysis.
Countersinks are notoriously difficult to measure; one of the main challenges for manufacturers is finding a way that considers how to calculate the centre of the hole. The Third Dimension solution addresses this issue with a specially designed stand-off integrated into the sensor that enables the system to calculate the hole centre and therefore check the required dimensions before the fastener is fixed in place.
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