Worm shaft
The worm shaft , often simply referred to as a worm , is a shaft with a helical turn for the transmission of rectilinear movements or forces parallel to the shaft .
Functions of worm shafts
Conveyor technology
Based on the Archimedean screw developed as early as the third century BC, new areas of application for worm shafts were opened up over the years. It can be found as a central component in the screw conveyor and extruder . The worm shaft is inserted in a screw cylinder and is rotated by a motor. Its job is to transport material and also to compress and homogenize material in the extruder.
Drive technology
In the worm gear, the worm shaft is the part of the torque- transmitting worm gear set with the higher speed. As a rule, the worm shaft drives the worm wheel . The waves are arranged transversely to one another.
If a rotary movement is to be converted into a linear movement, the longer lead screw is used.
Construction of worm shafts
For industrial applications, worm shafts are milled from round steel. Each screw is designed precisely for its functions in the process. However, there are numerous cataloged solutions for standard applications.