We have all seen prints with many datum reference frames on them. The fact that there are multiple sets of datum’s is not an issue and is put in place for functional design reasons. There can be so many that they look like an alphabet soup. But what about raw castings? Generally the functional part datum reference frame(s) have not yet been cut into the parts yet. This where casting datums come into play. They are typically designated as X-Y-Z or Z-Y-X.
Radiographic testing is a widely accepted method for finding voids and defects in materials. Makers of castings and solder connections on printed circuit boards have used radiographic testing to detect voids in 2D images and Computed Tomography (CT) in 3D images with excellent results that are well documented. As CT scanning continues to evolve and emerge as the inspection method of choice new challenges arise. Many times customers are unaware of the difference and apply old specifications on their drawings that may no longer apply. Or they do not know the full capabilities of the newer technologies or have not yet defined the specifications for their application.
Industrial CT scanning has gained prominence in dimensional data collection technologies with the advent and continual development of additive manufacturing. Now, CT scanning processes are being added to ISO17025 scopes of accreditation and the emergence of Metrology based CT is gaining recognition and acceptance across many industries.
Your Molds and Dies are critical to your business. They were meticulously created and iteratively tuned until the parts they produce are within specification. At that point, they were put into production and no documentation of the final tuned geometry was captured. This is actually the standard operating procedure for most of the world. The problem occurs when a part gets stuck and the equipment is cycled again and the tool cracks! Now you are stuck with having to go through the entire tuning process again. Or are you? With laser scanning and structured light scanning you may be in luck.
Many measurement and reverse engineering requirements require more than simple caliper or micrometer measurements. Whether you are conducting a First Article Inspection (FAI), troubleshooting a manufacturing issue or reverse engineering a legacy part for improvements, one or multiple of the modern data collection methods may work – but what is best and what are you compromising on by using any particular method? Do you do this work yourself or hire out an experienced service provider?
Non-contact or touchless dimensional measurement devices are the modern new comer to an array of contact devices that have been traditionally used. Contact devices are discussed in this link on Common Contact Measurement Devices. All of the non-contact devices generate a point cloud or voxel data set as their most raw form of data. The exception is the optical comparator which has been around since the late 1920s. It does not expressly produce digital data, but some of the variant equipment that evolved from this equipment does.
3D Engineering Solutions (3DES), North Americas’ most Advanced & Proven Center of Excellence For Metrology & Engineering Services is pleased to announce their ongoing strategic partnership with Nikon Metrology, Inc (NMI) of Brighton, Michigan. 3DES recently purchased two additional advanced industrial computed tomography (CT) systems from NMI. These systems use X-rays to penetrate components and assemblies to retrieve all surface and internal details.
Recently I had a client who was purchasing micro motors from a Chinese company. These motors were very specialized for their required function as it has a gear reduction box attached to the output shaft.
3D Engineering Solutions’ state of the art, temperature controlled, and ISO17025 accredited metrology lab offers certified digital radiography services. Our metrology lab and 30,000 sq. ft. of warehouse space can accommodate customer’s needs; from single part projects all the way up to production part projects for tens of thousands of parts. We have bar code logging capabilities for projects requiring full traceability and 100% data accountability.