Compared To Cylindrical Shaft Extension, The Mechanical Strength Of Conical Shaft Extension Is Higher

Shaft extension is an important installation dimension for electromagnetic brake motor products. Most electromagnetic brake motors have cylindrical shaft extensions, commonly referred to as cylindrical shaft extensions. However, some electromagnetic braking motors, such as lifting and metallurgical motors, mostly use conical shaft extensions due to different operating conditions.
The diameter of the extension section of the conical shaft gradually changes according to the specific taper. The root of the shaft extension corresponds to the diameter of the shaft extension. Naturally, the torsional shear stress is much better than the torsional shear stress of a small diameter cylindrical shaft extension. It is not easy to break the shaft due to metal fatigue caused by alternating stress. Therefore, it is suitable for mechanical equipment with high loads, high inertia, and frequent forward and reverse rotation. This is the key to selecting the tapered shaft extension for the lifting metallurgical motor. This type of shaft extension end is threaded for installing a stop device.
Compared to electromagnetic braking motors, the shaft extension of lifting and metallurgical motors not only needs to withstand the static torque corresponding to the rated load, but also needs to superimpose dynamic loads, so the output shaft diameter is required to be thicker. In addition, the dynamic load superimposed on the shaft extension belongs to alternating load, and the conical shaft can effectively resist internal stress with alternating properties.
Electromagnetic brake motor
However, from the perspective of actual production and processing, conical shaft extension has certain processing difficulties compared to cylindrical shaft extension, especially for processing conditions with low levels of automation and intelligence. The poor quality assurance effect of the conical shaft extension directly affects the operating effect of the electromagnetic brake motor after installation; In the practical application process of conical shaft extension electromagnetic brake motors, serious vibration problems may occur after the installation of the electromagnetic brake motor due to poor processing of the taper of the shaft extension of the electromagnetic brake motor body or unqualified processing of the matching cone sleeve.
With the improvement and improvement of processing equipment and technology for electromagnetic brake motor components, ensuring the axial extension size of electromagnetic brake motor is no longer a problem. Therefore, similar problems caused by non compliant extension dimensions of the cone shaft gradually decrease and eliminate, and the quality problems under corresponding working conditions also gradually decrease.
In addition to the difference in strength between conical and cylindrical shaft extensions, sudden changes in diameter are taboo for electromagnetic brake motor shafts, especially the size control of the shaft extension root and bearing position root is more important; In addition, the standardized processing of stress grooves in the area of shaft diameter variation, quenching and tempering of shafts under special working conditions, and stress relief of welded shafts all directly affect the operational quality of electromagnetic brake motors.