1. Why the Surface Is a Design Feature The surface of a part is where it meets the world, and most failures that are blamed on the material are actually failures of the surface. Corrosion…
1. The Laser as a Thermal Tool A laser beam concentrates optical energy into a spot small enough to melt or vaporize metal almost instantly. The same physical principle powers two dominant industrial processes: laser…
1. Why Alignment Controls Machine Life Shaft alignment is the practice of placing the centerlines of a driver and a driven machine on the same straight line, or at the deliberate offset defined by the…
1. Two Bearing Families with Different Jobs Between the many rolling element bearings in a machine, two families cover an outsized share of rotating shaft applications: the deep groove ball bearing and the tapered roller…
1. The Worm Gear as a Right Angle Drive When a drive must turn through ninety degrees and reduce speed at the same time, the worm gear set is often the most compact and quiet…
1. Why Airflow Design Determines Thermal Performance Every electronic enclosure, motor driver, power supply and automated machine eventually meets the same wall: heat. Forced convection with a compact axial or centrifugal fan remains the most…
1. The Flexible Drive, the Workhorse of the Machine Somewhere between the rigid coupling and the direct gear train sits the flexible drive: the belt that wraps the pulleys and the chain that rides the…
1. The Motor and the Gearbox Are One Discussion The gearmotor, a motor and a speed reducer assembled as one unit, is the most common drive in industry, and its selection is where the mechanical…
1. The Machine and Its Own Measurement A precision machine is, in the end, a machine that knows where it is. The spindle knows its position through the encoder, the slide knows its travel through…
1. The Vessel Is a Whole, the Flange Is Its Memory A pressure vessel holds a fluid under pressure, and the whole discipline of its design is the control of stress: the shell resists the…
1. Linear Motion Is a Decision, Not a Product Every machine that pushes, pulls, lifts or positions along a line is a linear motion system, and the surprising fact is that the market does not…
1. The Mold Is Merciless: It Keeps What You Give It An injection mold is an exact negative of the part, and its memory is perfect. Whatever the part design contains, ribs, undercuts, thin walls,…
1. The Part Is Accurate, the Assembly Fails Every process engineer has met the part that passed inspection perfectly, every dimension within its tolerance on the print, and still would not assemble. The parts were…
1. The Gripper Is the Robot’s Business Card The arm positions the part, but the gripper decides whether the part is actually handled. A robot with a poorly matched end effector performs like a precision…
1. The Gearbox That Tells You Its Own Story Open a gearbox that has run to an early failure and the oil will tell you the story before the bearings do. A black sludge that…
