Measuring Clamping Force

One of the original and most commonly used method of attaching parts together is by means of a threaded fastener however the threaded joint and its fastening is a complicated matter.

Measuring clamping force.

See torque force design equations webpage and torque chart page for recommended fastener torque and equation data. While the tool may be very accurate measuring torque only measures how difficult it is to turn the bolt. One simply slides the power switch to on adjusts the display to zero if necessary applies a clamping force and reads the display. Since earbuds and in ear headphones aren t held in place by the tightness of a frame we only measure the clamping force of over ear and on ear headphones.

The holding force of clamping elements is relevant for both safety and quality. If clamping force falls below this threshold an alarm signal is generated. Clamping force measuring gauges for pallets are intended to quickly measure the holding force of individual clamping heads. In torque control a specified torque is placed on the fastener typically with a torque wrench.

Factories production lines manufacturing plants all use a wide assortment of fastener and assembly systems. The clamping force on a bolt is defined as the compressive force a fastener exerts on a joint. The functionality of a breadboard prototype force measuring clamp was tested in a laboratory by use of the combination of certified weights a load washer a. Like weight we measure the clamping force of headphones objectively and subjectively.

This is can be dependent on a number of factors but is largely a function of the preload force the force exerted in compressing the bolt and the tension force the force exerted in pulling the bolt apart. Pallet clamping adapters are per application based and are fitted according to the specifications of the customer s pallet system. This fastener bolt torque calculator will estimate the unknown torque diameter axial force applied and coefficient of turning friction for the given conditions. Operation of the force measuring clamp is easy.

Monitoring of clamping force during machine set up monitoring of clamping force during. First we place the headphones on a wooden stand with two digital scales secured to each side. Using torque to measure clamp force an inconvenient truth the traditional method for tightening fasteners is to turn the bolt head or nut using a torque wrench. The two most common methods of applying preload are torque control and turn control.

A bolt s clamping force called preload is generated as the bolt stretches during tightening.