Injection molding of magnesium permitted a new design for a revolutionary miniature bar code scanner and provided additional benefits in protecting sensitive internal electronic components from water and other potential environmental problems.
The MS3 scanner from Microscan Systems “may not be smallest scanner available, but it is the best combination of size and performance,” says Malinda Elien, staff mechanical engineer for Microscan, Renton, WA. “This is the most compact, high-performance mechanical design around.” The chassis had to hold tolerances of ±0.002” in very thin wall sections (0.027”). Molten magnesium can travel longer distances prior to solidification than is possible with conventional die casting. The high pressure of injection molding and careful tool design made the difference. The density of the magnesium molding process (called thixomolding) was also a critical difference. “We were able to achieve thinner wall sections without having to worry about water leaking through random pores in the metal,” said Elien, who had the final call on whether to try thixomolding or stay with die casting. “Initially we were trying to decide between Phillips Plastics and our traditional die-casting vendor,” Elien said. “We never had the question in our mind if Phillips was telling us the truth or if they were telling us what we wanted to hear...Every day I am happy that I made the decision that I did.”
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
The Industrial Internet of Things is bringing a previously reluctant process industry into the wireless fold. The ability to connect smart sensors to the Internet has spiked the demand for wireless devices in process manufacturing, according to the new study from ARC Advisory Group.
Everyone has had the experience of trying to scrape the last of the peanut butter or mayonnaise from the bottom of a glass jar without getting your hand sticky. Inventor Ron Jidmar thinks he has a solution to all of that nonsense with a flexible jar design that can be squeezed with one hand to lift contents from the bottom to the top of a jar or container, leaving the other hand free to scoop the contents out cleanly.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.