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What are the technical requirements of the guide shaft?
Oct 30, 2017

When the guide shaft is manufactured, the problems of machining accuracy and surface roughness should be taken into account. The machining accuracy mainly includes the dimensional accuracy, geometrical precision and mutual alignment accuracy. So do you know what the main contents are? Here we will focus on the content of this simple introduction, hoping to help you.

First, let's take a look at the concept of dimensional accuracy. In fact, for the part of the guide shaft, its dimensional accuracy mainly refers to the diameter accuracy and axial length dimensional accuracy. At present, according to the use requirements, its dimensional accuracy includes different levels. In addition, in practice, it usually needs two axle journals to support on the bearing. And the two axle journals are bearing journals.

Generally, we regard it as the assembly reference for the guide shaft. So, we also need to ensure its geometrical precision at the same time. If the accuracy requirement is not too high, then the error in geometrical form should be controlled within the diameter tolerance range. If the requirements are strict, then the actual allowable tolerance value should be stipulated separately on the part drawing.

In addition, it is necessary to take into account the mutual alignment accuracy. This is because in the assembly process, the mutual alignment accuracy between the guide shaft and the relevant parts is one of the basic requirements to ensure the use effect. In addition, it also includes the coaxial degree of the inside and outside cylindrical surface, the verticality requirement of the axial orientation end face and the axis lead.

In addition, in the actual application, because the accuracy of different equipment is different, and the operation speed is different, the surface roughness of the guide shaft is different. At this time, the appropriate surface roughness should be selected in combination with the actual application requirements.