What are the characteristics of honing pipe machining?

- Sep 21, 2018 -

High processing accuracy: in particular, some small and medium-sized through hole, its cylindricity can reach within 0.001mm. Some parts with uneven wall thickness, such as connecting rods, have a roundness of 0.002mm. For macroporous (aperture in the 200mm above), roundness can also reach 0.005mm, if there is no ring groove or radial hole, etc., the straightness is 0.01mm/1m within the possibility. Honing is more accurate than grinding, because the bearings that support the grinding wheel are located outside the honing hole, resulting in deviations, especially in the case of small holes, where the grinding accuracy is even worse. Honing generally can only improve the shape accuracy of machined parts, in order to improve the position accuracy of parts, some necessary measures need to be taken.

Such as using the panel to improve the verticality of the part end and axis (panel mounted on the punch casted frame, adjust to make it perpendicular to the rotating spindle, parts on the panel can be processed). Good surface quality: the surface is cross-pattern, which is beneficial to the storage of lubricating oil and the maintenance of the film. The higher surface support rate (the ratio between the actual contact area of the hole and the shaft and the area between the two) can withstand larger loads and wear resistance, thus improving the service life of the product. Honing speed is low (is the grinding speed of a few one-tenth), and the oil stone and the hole is face contact, so the average grinding pressure of each abrasive particle is small, so honing, the heat of the workpiece is very small, the workpiece surface almost no thermal damage and metamorphic layer, small deformation. The honing surface is virtually free of sand-forming and extruded hard layers.