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Joined 2 years ago
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Cake day: June 13th, 2023

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  • Is it surprising that a publicly traded company is going to drive down quality to meet (or in spirit areospace’s case - attempt to make) profits?

    The union also has clashed with Spirit over whether machinists should ever be responsible for checking their own work. Workers say having separate inspectors sign off on individual work is critical for quality control; Spirit and Boeing executives say that technological advances have reduced the need for separate inspectors in some cases.

    Bad bad idea. Do not let machinists sign off on a inspection report. The incentive to hide mistakes is far too great.














  • Steppers have a higher precision to a servos higher speed and torque (but torque that’s not constant.)

    Just trying to understand this. Then how come all CNC precision machines use a servo instead of a stepper? I mean there are some ridiculously accurate machines that can position itself over and over varying under a micron (<.001mm) but the manufacturers choose servo over stepper. Is it for the sake of holding torque that servos have to be used over steppers?


  • Most, if not all, aerospace tools that take a measurement requires periodic calibration and assurance that the tool is performing to spec.

    There can be thousands of unique tools that must pass through its own respective calibration process and documentation. Micrometers, calipers, torque wrenches, and even scales.

    Having a networked tool can save the hassle of operators mis-reading or just plain ignoring the calibration sticker. Also, knowing the “location” of the tool on an inventory sheet isn’t quite like knowing which side of a 747 for the wrench that is due for calibration.

    Also this is just me hypothesizing… I presume there are a number of other benefits like automated logging of torque values for every single bolt installed with such tool. When the FAA audits for installation information regarding a single screw on a plane’s 3rd row window side infotainment system’s upper left mount… The data is easier to find.

    This is all part of “industry 4.0” connected manufacturing for more efficient and lean manufacturing. Collect and process any data you could ever want to make the decisions for a manufacturer to do more with even less.