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Portable Measuring Arm Improves Processes and Capabilities

Hyster-Yale designs, engineers, manufactures, markets and services a comprehensive line of lift trucks and aftermarket parts marketed globally primarily under the Hyster and Yale brand names. The group has been building relationships and partnering with customers, suppliers, dealers and employees for over 90 years. The international headquarters of the business is located in Cleveland, Ohio, in the US, but the group has a widespread global presence, with regional product development centres for lift trucks located in the US, China, Italy, the Netherlands, the United Kingdom, India, the Phillipines and Japan.

The Hyster-Yale site in Craigavon, Northern Ireland is responsible for a wide range of direct component production and assembly activities, including the need to assess multiple families of parts, with a percentage received from external suppliers.

Production floor at Hyster-Yale in Craigavon, Northern IrelandThis sort of activity demands a rigorous level of quality control, which falls under the responsibility of John Shaw, Superintendent for the quality department in Craigavon. John has been with Hyster-Yale for almost four decades and has both watched and driven the development of the business’ quality processes, from the days of measurement with Vernier calipers, micrometers and tape measures through to the use of more modern devices like full-size CMMs and portable measuring arms.

The quality department acquired its first advanced metrology tool in 1994 when it invested in a DEA CMM unit, which was subsequently upgraded to one of Hexagon’s GLOBAL CMMs in 2005. Since then the department’s needs have developed, with the capacity to move around the large Craigavon site to better support their variety of internal customers demanding a more portable inspection solution. This was particularly necessary as the quality team began to add fixture inspection to their portfolio of duties – fixtures are in a set position and cannot be moved to the quality areas.

John and his team’s first foray into portable measuring arm technology involved purchasing a system from one of Hexagon’s competitors, but this solution didn’t live up to expectations, with the very high cost of ownership cited as a particular reason to move on to a better solution.

After a visit to the Hexagon Precision Centre for a hands-on demonstration and the opportunity to put Hexagon’s latest solutions through their paces, John’s team were convinced by the performance of the Absolute Arm 7-Axis and RS5 Laser Scanner.

Inspection fixture at Hyster-Yale in CraigavonThe implementation of scanning across a number of inspection processes progressed very quickly once the system was in place in Craigavon. The team began with measuring a wide range of components and found the increased data they were able to collect with laser scanning has allowed the business to build parts to a higher specification.

The introduction of laser scanning with the Absolute Arm has also been beneficial from a cost saving perspective. Processes that used to take 8 hours to complete with manual methods are now completed in as little as 40 minutes, including programming.

John estimates that the new portable measuring arm system is split about 70/30 between time in the quality room checking manufactured and acquired components and moving around the facility – on the assembly lines for fixtures, in the weld shops, at the cylinder plant or in the product development area. The latter is where reverse engineering work at Hyster-Yale is carried out, specifically for the development of tubes and hoses and brackets.

One area in particular that scanning with the Absolute Arm has allowed for an increase in activity and an improvement of outcomes has been with the measurement of the fixtures that are manufactured onsite. The arm has really enhanced the team’s capabilities in this regard, and the data collected is often now used for preventative maintenance purposes.

John and his team are also currently involved in piloting new products. With the Absolute Arm they’re able to measure directly within pilot areas, checking for clearance and fits – this is much more efficient than previously.

Hyster-Yale’s GLOBAL CMM runs with PC-DMISThe transition to the new Absolute Arm was relatively straightforward for John’s team, with training taking approximately a week before the team was up and running. Two people onsite were already well-experienced with PC-DMIS thanks to the use of the GLOBAL CMM system, and they were sent for additional training on creating new models for use when scanning with the new arm. A further two team members were brought onboard to help handle the increased inspection duties the team anticipated taking on with the new system.

According to John the ability to develop the team’s skills by continuing to work with PC-DMIS was a big driver for their decision to invest in Absolute Arm technology, as was the quality of the scanner – the team found they were able to very quickly collect clean and usable data with the RS5 Laser Scanner.

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