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We are delighted to announce the launch of the CMM Startup measuring machine, marking a significant milestone in the development journey of V-Proud Joint Stock Company and Mora Metrology. After years of planning and research, we are proud to introduce to the market the CMM Startup series, aimed at optimizing costs and making advanced measurement technology more accessible to businesses.
Designing and testing the frame is crucial in developing a new vehicle, requiring high-resolution sensors to assess even the slightest deformation.
Before, a dedicated operator spent 20 minutes measuring an item manually using a Mitutoyo CNC CMM and 40 minutes calculating deviation values with the MCOSMOS software. We can now implement both the measurement and the inspection in about three minutes, using a fully automated and unmanned operation, thanks to our robot-mounted scanner, our PolyWorks macros, and PolyWorks|Inspector.
Saitama Kiki Co., Ltd. has been in the manufacturing sector in Japan since 1956. As a Tier 1 supplier, their activities range from research and development to production and sales. Their main products are critical safety and hydraulic parts, such as brakes for large vehicles, steering components, and suspensions.
Saitama Kiki has three production bases in Saitama and a plant in Yamagata. They started the production of steering components in Japan in the 1970s and established a plant in Thailand in 2014 to provide products that meet the various needs of their customers.
The Measurement Challenge
Saitama Kiki produces 800 drag links per day for different types of vehicles. Drag links are bent metal rods that are part of an assembly that transmits the movement of the steering wheel to the wheels.
To control part quality, they inspect a subsample of the daily production. In the past, parts were measured manually using a Mitutoyo CNC CMM CRYSTA-Apex and results were entered in the Mitutoyo MCOSMOS software to compute deviations. Fictional points and dimensions had to be calculated manually from other elements.
It took 20 minutes to measure a part and 40 minutes to calculate deviation values. In addition, different parts required different measurements and distinct procedure manuals, which increased the risk of human error. Add to that the constant shortage of qualified personnel to take the measurements and complete the inspections, and you have a quality control process that was time consuming and error prone.
The Production Engineering Department found that these challenges were mostly caused by manually taking the measurements, and making calculations manually, and received a request from the field staff to automate the inspection of the drag links. More specifically, they requested that the fictional points and dimensions be calculated from other elements automatically. Saitama Kiki called on Toyota Systems Corporation, a distributor, to find a solution.
The Measurement Solution
In developing an automated system, Toyota Systems Corporation took the lead and compared different measurement software. With the results in hand, the Production Engineering Department decided to adopt the PolyWorks|Inspector software solution that offers a plane, axis, center point feature-based alignment, pass/fail tolerance testing, calculation of CAD-to-measured deviations, monthly bug fixes and enhancements, and other interesting features. More importantly, while Saitama Kiki could continue measuring with the Mitutoyo MCOSMOS software by using several steps of manual operations after measuring with their Mitutoyo CNC CMM, only PolyWorks|Inspector enabled automating the entire series of operations by developing macro functions. Saitama Kiki purchased the PolyWorks solution from PolyWorks Japan, a subsidiary of InnovMetric Software, developers of the PolyWorks Metrology Suite.
Toyota Systems Corporation teamed up with a systems integrator to automate the measurement of the drag links. After evaluating different possibilities, they decided on a Creaform MetraSCAN 3D-R scanner and an industrial robot to take the measurements without human intervention. The control software uses a PolyWorks macro, and the series of operations from measurement to inspection can now be performed automatically.
Saitama Kiki decided to request help from PolyWorks Japan to develop the macro that performs the inspection. The team from PolyWorks Japan understood their needs and developed the macro using an STL file of a scanned drag link and the corresponding CAD file. Then, they went to the plant and tested the macro on-site with the scanner and the robot. The new automated system was completely unmanned and very efficient!
Measuring Achieved Benefits
Thanks to the full automation of drag link inspection, human operation and advanced skills for measurement inspection are not required anymore, and the new operation can be implemented quickly and easily. Saitama Kiki uses PolyWorks|Inspector macros to make daily use of automatic part measurement and pass/fail tolerance testing.
Mr. Akira Harada, Vice-Director of the Production Engineering Department, stated: “Before, a dedicated operator spent 20 minutes measuring an item manually using a Mitutoyo CNC CMM and 40 minutes calculating deviation values with the MCOSMOS software. We can now implement both the measurement and the inspection in about three minutes, using a fully automated and unmanned operation, thanks to our robot-mounted scanner, our PolyWorks macros, and PolyWorks|Inspector. Consequently, the number of items inspected daily has increased about 20 times while operation time and labor costs have been reduced significantly.”
He continued, “As a result, a dedicated measurement technician can handle other production tasks. In addition, this automatic process has eliminated the need for different versions of procedure manuals, as well as errors and variations in measurements. The measurement results are now obtained uniformly and are more accurate.”
Mr. Shinya Ueno, Specialist from the Production Engineering Division of the Production Engineering Department, stated: “We measure and inspect the quality of the production line as one of several work processes. We can now measure without even touching a computer by using PolyWorks|Inspector. The inspection results are printed out and the feedback on defects can be automatically implemented to improve our manufacturing processes.”
Source: innovmetric
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