Motor manufacturers never intend for the lead wires on small motors to be used as a handle, but that does not stop it from occurring. Even if the motor is handled properly, unattached or unsecured wires allow excessive movement and put undue stress on the internal solder connections. When space is not an issue, possible solutions include a grommet or specialty clamp around the wires to hold them in place. For companies that make small and highly-integrated motors such as Lin Engineering (http://rbi.ims.ca/4919-537), space is a primary concern, and these approaches could increase the frame housing size. The small step motors also make the assembly of a grommet or specialty clamp a tricky proposition at best. A light cure adhesive from Loctite provides an alternate solution.
Designed specifically for high-speed curing, Loctite's 352 modified acrylic adhesive is fully cured when exposed to ultraviolet (UV) radiation of 365 nm. In a production process, this means UV light exposure for somewhere around 30 to 60 seconds, depending on the intensity of the UV light. In addition to bonding to a variety of surfaces, such as the motor's housing or stator laminations and wire insulation, the cured form is highly resistant to vibration.
In Lin's assembly process, an operator uses a hand-held syringe dispenser to manually dispense a bead of the adhesive around the wires attached to the stator winding. The material's viscosity provides the right consistency by being easy to dispense and avoiding seepage inside the motor. After application, the stator winding assembly travels on a small conveyor system though a UV-cure process for 30 seconds. Without the UV light exposure, the single component adhesive has a long open time. The cured adhesive has proven to be an effective means of securing the leads and preventing wire failures.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
Robots that walk have come a long way from simple barebones walking machines or pairs of legs without an upper body and head. Much of the research these days focuses on making more humanoid robots. But they are not all created equal.
The IEEE Computer Society has named the top 10 trends for 2014. You can expect the convergence of cloud computing and mobile devices, advances in health care data and devices, as well as privacy issues in social media to make the headlines. And 3D printing came out of nowhere to make a big splash.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.