Principle and characteristics of honing technology
Honing is a special form of grinding and an efficient method of finishing. The use of this process not only eliminates the large processing workload (honing was still used for polishing in the 1950s), but also an effective method to improve the part size, geometric accuracy, and surface roughness to a certain extent.
(I) Honing features:
1. High machining accuracy
2. Good surface quality:
3. Wide processing range:
(2) Honing principle:
1. Honing is to make use of one or more oilstones installed on the circumference of the honing head. By means of expanding mechanism (both rotary and pusher type), the oilstones are expanded radially to press against the hole wall of the workpiece, so as to produce certain surface contact. At the same time make the honing head rotation and reciprocating movement, the parts do not move, Or the honing head only rotates and the workpiece reciprocates to achieve honing.
2. Honing can also be used for . In use, the honing head floats between the machine tool spindle or between the honing head and the workpiece holder. In this way, the honing head is guided by the hole wall of the workpiece. Therefore, the machining accuracy is less affected by the accuracy of the machine itself, and the formation of the whole surface basically has the characteristics of the creation process. The so-called creation process is the formation of the hole wall and the surface of the hole wall and the hole wall by grinding and dressing each other. The principle is similar to the principle that two moving plates grind against each other to form a plane.
It should be noted that because the honing stone is made of diamond and cubic boron nitride abrasive, the abrasion of the stone is very small, that is, the finishing amount of the stone is very small. Therefore, the accuracy of the stone hole depends to some extent on the original accuracy of the stone on the honing head. Therefore, when we use diamond and cubic boron nitride, the stone needs to be well-trimmed before honing to ensure the accuracy of the hole.
