Interface load cells, torque transducers and instrumentation are commonly used in the test and measurement of different tools and fasteners used in testing products and actual production of various machines and components. The sensor data received in measuring assembly tools and fixtures used in securing nuts, bolts, and screws, is critical in making safe and reliable products.
For example, the ability to measure torque on screws and the force output of a screwdriver or wrench is very important when there are tight tolerances involved like in engineering and build of automotive or aerospace and defense machines and parts.
As we did for the machine testing blog, we’ve detailed a few examples of how Interface force and torque solutions are used in measuring tools performance for both design and assembly. You can find additional application notes on these examples and more by visiting our industry solutions.
Bolt Fastening Force and Torque
An aerospace company was working on a test plan that involved taking torque and compression measurements on fasteners with varying joint materials. The system required both high and low sampling rates, in addition to the capability of precisely measuring force and torque simultaneously. They required reliable accuracy and long-term stability. The test plan intended to provide verification of required force and torque specifications for fasteners, to ensure safety without compromising installation. Interface suggested a LW or LWCF Load Washer in conjunction with a T12 Square Drive Rotary Torque Transducer. With this solution, the customer was able to align force and torque measurements to desired levels. This was accomplished by combining the sensors with the high sample rate of the data logging and graphing capabilities of the SI-USB, capturing real-time force and torque levels for examination. The fasteners were tightened to the specified force and torque requirements and were safely installed without impairment to themselves or the joint material. The customer was able to measure the rapid event effectively and accurately. Read more about this bolt fastening solution here.
An airplane manufacturer needed a solution where they can control the torque when fastening screws on their airplane models. They didn’t want to create any damage to materials or apply too much torque when plane components are being fastened together. Interface suggested a T15 Hex Drive Rotary Torque Transducer, which can be attached to the fastening work bench, measuring and recording torque, rotational speed, and angle of the screwdriver. The LWCF Clamping Force Load Cell is installed, measuring the forces applied on the screw being fastened. Results are sent to the SI-USB4 4-channel USB Interface Module, which is connected to the customer’s PC or laptop where data is logged, graphed, and displayed. This solution allowed the airplane manufacturer to calibrate their screwdriver by measuring its torque, rotational speed, and angle, when attaching materials together for their airplane. They were also able to measure the forces being applied to the screw, to ensure it was not applying too much torque to the components. You can learn more about the aircraft screwdriver application here.
A customer wanted to perform regular torque testing on his ratchet-type torque wrench while recording these values for future examination. Interface supplied a model TS15 Square to Flange Reaction Torque Transducer with the INF-USB3 PC Interface Module for the customer to use. The customer mounted TS15 to work bench through flange and inserted the ratchet-type torque transducer into the TS15. Using this product, the customer was able to accurately perform their calibration checks and view the results while logging them to their PC Computer. Learn more about this wrench torque verification testing here.
While not nearly as complex as machine testing applications, tools testing is equally important to the outcome of a project. The tools and fasteners used, even those as simple as a bolt and wrench, need to be accurately measured and assembled to avoid loose connection or overtightening that can damage the product. Interface provides a host of tool testing solutions for nearly anything that outputs force or torque. To learn more about our tool testing solutions, visit us at www.interfaceforce.com.