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Creaform

Innovation

Automated Quality Control Best Practices

Tips for end-to-end manufacturers

Published: Tuesday, January 23, 2024 - 12:02

End-to-end manufacturers are companies that lead products through the entire manufacturing process, from design to customer delivery. Unlike businesses that manufacture their products with a segmented manufacturing process, end-to-end manufacturers have complete control over the different parts of production, which ultimately affects the time, money, and effort associated with product innovation and time to market.

But what about product quality? What practices can end-to-end manufacturers adopt to increase quality and deliver high-end products to their customers? Considering that they control the entire manufacturing process, how can they judiciously use quality data from one step to enrich the next?

The challenges of end-to-end manufacturers

Nowadays, competition is strong. Customers demand quality, and they want it delivered at a reasonable price. The market eagerly awaits the launch of new products that are both innovative and attractive. Products must function without any defects for an indefinite period while being continuously improved and updated.

These requirements put untold pressure on manufacturers, who must use all possible stratagems to increase quality, reduce costs, limit downtime, accelerate time to market, enhance innovation, and beat competition. Considering these daunting tasks, manufacturers are surely wishing the blue genie will emerge from his bottle and grant a lot of wishes.

What if the parts are large, complex, and require a long manufacturing process involving several steps? How can end-to-end manufacturers gain efficiency and limit rework in such a context?

The same challenge applies to product development processes that require several iterations, such as the design process for a composite cutting jig. How do you develop a prototype corresponding to CAD requirements while limiting the number of iterations?

The key is measuring the prototype a few times to adjust the jig, and then adding or removing the missing or extra millimeters accordingly. Thus, even before the start of production, the quality boost obtained from scan data and rework is transmitted from one stage to the next, allowing end-to-end manufacturers to gain efficiency while improving quality.

This same logic applies to all manufacturing processes involving complex and expensive parts. Inspection results are sent to another stage of the process, either via a machine or a human, to correct imperfections and improve quality. After all, throwing away such valuable parts that took so long to manufacture would be unthinkable, even if they don’t meet tolerances at first glance.


Assembly of a new car; robotic arms and automated welding on the production line

Quality control solutions that maximize product development and manufacturing processes

Design and production engineers rely on top quality control technologies and software solutions to help them maximize their product development and manufacturing processes. Automated quality control is the solution that will enable them to inspect part dimensions accurately and then transmit the acquired data to other machines so the manufacturing process can be adjusted accordingly. The goal is to produce high-quality parts that meet customer requirements, and then deliver them on time without delay or defects.

What criteria must these solutions satisfy to guarantee end-to-end manufacturers better manufacturing and product development processes?


MetraSCAN 3D car-frame inspection

Quality control automation tools

Automated measuring tools must take into account the type of part being measured. A technology for measuring any part without preparation, regardless of its size, geometry, or surface finish, can be integrated into the manufacturing process at any stage without altering its flow.

By this very fact, the speed of the quality control tool must also be considered. An instrument allowing for the acquisition of innumerable measurement points quickly, such as a 3D scanner mounted on a robot, will comply with the required cycle time, even if the part’s geometry is complex and its surface difficult to measure.

Automated quality control software

An offline simulation platform offering an environment very close to reality will be able to replicate the behavior of a real 3D scanner and give a more precise evaluation of the cycle time. In addition to the ability to program robot paths in any configuration for a large category of robots, such simulation platforms will also detect whether the robot trajectory must be modified if there is a risk of collision.

Moreover, the chosen acquisition platform should offer an integration capacity with external metrology software, such as Polyworks or Metrolog. Thus, when the acquisition is completed, the scan data can be automatically transferred to the inspection software to improve the ensuing steps in the manufacturing process and raise product quality.

Finally, the supplier that develops both the 3D scanners and the acquisition platform will ensure that the best possible data are generated during the acquisition as well as during the reconstruction of the surfaces in digital format. The algorithms will be optimized to provide the best possible resolution so difficult surfaces and large objects can be scanned with the right level of detail.


Creaform’s Cube-R 3D-scanning CMM system in action

How to implement automated quality control processes

Nevertheless, implementing automated quality control processes is a long and expensive path. Choosing the best automation tools and the most suitable acquisition and simulation software platforms are just two of the many tasks ahead. So, where to start? Here are the best practices to guide you on your journey.

Five best practices for automated quality control


Creaform products meld with a various array of industrial robots

1: Do a financial analysis of the first-year savings
Before considering which automated quality control system could best suit your needs, you must decide which manufacturing task can be replaced by an automated solution. Consequently, you must know if the project is viable financially. Will there be savings on direct labor? Can you reduce rework and make gains by limiting the scrap rate, since defects will be identified earlier in the process? Can the necessary floor space be reduced? Will the new tasks assigned to employees be more rewarding and increase retention? Can productivity be expected to increase, leading to an increase in customer satisfaction and demand?

To guide you, use this calculator to estimate the first-year savings. The results obtained will guide you on the type of solution to choose—a turnkey solution or one developed by a robot integrator.

2: Do a project evaluation with offline programming software
A simulation made in a digital-twin environment will enable you to verify whether the robot is large enough to scan all the surfaces properly. Following this reachability assessment, you can evaluate the cycle time and confirm whether it meets the requirements. As previously established, choosing the most realistic simulation platform will facilitate this task and give confidence to the people involved, even those unfamiliar with robots and 3D scanning.

By following best practices 1 and 2, you’ll be able to assess whether your automated quality control project makes sense financially and virtually.

3: Do a technology analysis
Now it’s time to validate the technology. When measuring an object of known dimensions, you must determine whether the solution meets the performance requirements. Do the accuracy, repeatability, and resolution conform to the specifications? What about the technology’s ability to scan difficult surfaces without preparation? Does the real cycle time correspond to the simulated one?

A good practice is to first validate the performance requirements using a handheld device directly in the manufacturing environment. This way, the 3D scanning technology can be analyzed beyond its automated context simply by focusing on the technical parameters. Then, once the technology has been validated, it can be put on a robot or in a turnkey solution.

4: Choose the right robot integrator
Because automating a quality control process is often a large-scale undertaking, choosing the right partners is one of the most recommended practices. The integration of the complete solution must be flawless, even if the technology perfectly meets the requirements, the simulation is realistic, and the solution makes sense financially. Otherwise, no one wins—not the manufacturer of the metrology equipment, the end-to-end manufacturer, or the client.

If finding the right robot integrator gets complicated, an interesting alternative for end-to-end manufacturers is to opt for a turnkey solution.

5: Write the business case for the complete solution
Here, the initial financial analysis materializes and indicates whether the return on investment makes sense for the organization. Only then can the green light for the project be given.


MetraSCAN-3D-R inspects cast parts on a turntable.

Automated quality control: The path for end-to-end manufacturers

Because they control the entire manufacturing process, end-to-end manufacturers can benefit from automated quality control by judiciously using the quality data from one step to enrich the next, especially in producing large, complex parts with difficult surfaces. In that way, they are ensured greater efficiency and limited reworking, ultimately delivering products of higher quality to their customers.

Creaform offers quality control automation tools and automated quality control software as well as the expertise to help you implement your automated inspection process. For more advice on AQC solutions, contact Creaform.

Published Oct. 25, 2023, by Creaform.

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About The Author

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Creaform

With more than two decades of experience shaping the future, Creaform develops, manufactures, and markets cutting-edge 3D automated and portable measurement technologies that provide innovative solutions for applications such as 3D scanning, reverse engineering, quality control, nondestructive testing, product development, and MRO. Its products and engineering services redefine the boundaries in a variety of industries, including automotive, aerospace, consumer products, heavy industries, manufacturing, oil and gas, power generation, healthcare, research, and education. Headquartered in Lévis, Québec, Creaform is present in more than 85 countries through its 15 local offices located all around the world, and a network of more than 125 distributors. Creaform is a business unit of AMETEK Inc., a leading global provider of industrial technology solutions.

Comments

Misleading title?

"Automated Quality Control Best Practices for Processes NOT Involved with Chemical Reactors" would probably be a better title. Now I finally understand why a digital twin work environment can work. It works, of course, because if all one does is bend, twist, stretch, mill and machine metal, everything can be scanned with near perfection, "easily" simulated and one doesn't need to look into material composition. Thus, shedding some light on the maturity of digital twins in the biotech or chemical process industry would be really interesting.