Navigation Links
New freeform standards to support scanning CMMs
Date:11/14/2012

The National Physical Laboratory (NPL), the UK's National Measurement Institute, has developed a new range of three dimensional standards for verifying freeform coordinate measurement machines (CMMs). The standard allows the verification of portable and fixed non-contact coordinate measuring systems such as those employing laser scanning and fringe projection technologies, as well as those employing tactile sensors. It also helps evaluate the surface measurement capabilities of new scanning measurement technologies.

Items that are freeform are unconventional in shape or design, especially in being asymmetrical and irregular, but with a flowing outline. Freeform manufacturing projects include the development of more efficient engines for aeroplanes, drag reduction for cars, longer lasting prosthetics and reverse engineering of archaeological finds to learn about their provenance.

Traditionally such forms have proved difficult to measure practically with optical systems of the type used on production lines or away from the factory. It is often difficult to provide measurement traceability for mass produced freeform shapes, limiting innovations in freeform manufacturing. With the right measurement facilities, freeform brings many advances to the manufacturing sector.

NPL FreeForm dimensional standards ensure measurement traceability within freeform manufacturing industries. The standards are complex reference artifacts which provide traceability routes for a range of diverse measuring techniques.

Each NPL FreeForm standard bears several geometrical forms that are blended to form a single surface that tests various aspects of a scanning instrument's performance. Ceramic tooling balls or hemispheres on each corner of the standards aid registration. The precise nature of the surface employed by the standard allows traceability to be transferred to the freeform measurement technology. It is also possible to incorporate designed deformation to the surface, typically 100 m in size.

The Freeform development project was funded by the National Measurement Office. NPL worked with industry on a number of freeform measurement projects to identify the relevant measurement requirements. These highlighted many errors in existing optical scanning measurement systems, which the final artefact was designed to overcome.

The FreeForm standards are available to buy directly from NPL and are each supplied with a calibration certificate, the relevant CAD model and traceable measurement data files. It also forms part of NPL's calibration consultancy offer, which can be carried out onsite or at NPL.

The NPL FreeForm standards are available in various sizes. They have linear base dimensions nominally 37.5mm, 75mm, 150 mm and 300mm and bearing four ceramic tooling balls.


'/>"/>

Contact: David Lewis
david@proofcommunication.com
44-084-568-01865
National Physical Laboratory
Source:Eurekalert

Related biology technology :

1. Happtique Releases Draft App Certification Program Standards For Public Comment
2. A milestone in nanoparticle research: Nanoparticle test handbook sets the standards
3. Quality Standards Established for Competition to Identify Best Researchers in the US
4. iBio, Inc. Submits Plan to Satisfy NYSE Amex Continued Listing Standards
5. Promotion of Young Researchers Supported by Major Donation
6. Mangrove Partners Agrees to Support Amended Transaction Between Nabi Biopharmaceuticals and Biota Holdings
7. Seaside publishes research supporting disease-modifying potential of STX209 for fragile X syndrome
8. UPMC Invests in Intelligent Infrastructure with IBM to Support Vision of Personalized Medicine
9. ARMGO Pharma, Inc. announces data which supports its Rycal program as a novel approach for the treatment of stress-induced cognitive disorders
10. Elekta President and CEO Tomas Puusepp Pledges Support in Addressing Global Cancer Challenge at World Cancer Leaders Summit in Montreal
11. Elusys Awarded Additional $50.2 Million Under An Exisiting U.S. Government Contract To Support Final Stages Of Development Of ETI-204, For Treatment Of Inhalational Anthrax
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... June 27, 2016  Global demand for enzymes ... through 2020 to $7.2 billion.  This market includes ... cleaning products, biofuel production, animal feed, and other ... and biocatalysts). Food and beverages will remain the ... increasing consumption of products containing enzymes in developing ...
(Date:6/27/2016)... ... June 27, 2016 , ... ... medical technologies, services and solutions to the healthcare market. The company's primary focus ... distribution, manufacturing, sales and marketing strategies that are necessary to help companies efficiently ...
(Date:6/24/2016)... DIEGO , June 24, 2016 ... more sensitively detects cancers susceptible to PARP inhibitors ... circulating tumor cells (CTCs). The new test has ... HRD-targeted therapeutics in multiple cancer types. ... targeting DNA damage response pathways, including PARP, ATM, ...
(Date:6/23/2016)... 23, 2016   Boston Biomedical , an ... designed to target cancer stemness pathways, announced that ... Orphan Drug Designation from the U.S. Food and ... cancer, including gastroesophageal junction (GEJ) cancer. Napabucasin is ... inhibit cancer stemness pathways by targeting STAT3, and ...
Breaking Biology Technology:
(Date:6/2/2016)...   The Weather Company , an IBM Business (NYSE: ... capability in which consumers will be able to interact with ... via voice or text and receive relevant information about the ... Marketers have long sought an advertising solution that can create ... relevant and valuable; and can scale across millions of interactions ...
(Date:5/16/2016)... May 16, 2016   EyeLock LLC , a ... the opening of an IoT Center of Excellence in ... expand the development of embedded iris biometric applications. ... of convenience and security with unmatched biometric accuracy, making ... aside from DNA. EyeLock,s platform uses video technology to ...
(Date:4/28/2016)... First quarter 2016:   , ... the first quarter of 2015 The gross margin was ... 18.8) and the operating margin was 40% (-13) Earnings ... flow from operations was SEK 249.9 M (21.2) , ... SEK 7,000-8,500 M. The operating margin for 2016 is ...
Breaking Biology News(10 mins):