MSCT Screw Joint Testing Unit

7.4.3.- 安装和维护惯例
SCREW JOINT TESTING UNIT - MSCT

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The Screw Joint Testing Unit, "MSCT", represents the simulation of a tightening set consisting of a screw and a nut on two rectangular shaped beams.

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一般說明

The Screw Joint Testing Unit, "MSCT", represents the simulation of a tightening set consisting of a screw and a nut on two rectangular shaped beams.

A very precise torque wrench performs the tightening through a threaded rod and a flywheel. The screw and nut join two steel bodies (rectangular-shaped bars), which are separated at a certain distance. The action of the screw and nut produces an elastic strain in the steel bars generated by the axial tension produced in the screw body. The displacement produced (strain) is collected by a dial indicator enabling the analysis of the torsional torque, with which the tightening has been performed.

The screw head presents a flat bearing that allows friction to be negligible at this point. In this way, you can calculate the friction of the screw thread itself with the nut.

練習和指導練習

手册中包含的指导实践练习

  1. Study, definition and understanding of the torsional torque (tightening force).
  2. Study, definition and understanding of elastic strain in beams.
  3. Analysis and study of friction in the screw thread.
  4. Calculation of the axial force exerted by the screw and nut.
  5. Calculation of the axial force through the elastic strain.
  6. Study and understanding of the tightening torque based on different beam assemblies.

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