Honed tubes are widely used in the production of hydraulic cylinders, as well as a variety of high-precision equipment; extensive and engineering machinery, lifting and transport machinery, petrochemical pumping pumps, coal mine pillars, automobile shock absorbers, internal combustion engine oil pipelines, concrete conveying cylinders, roller bushings Pipes and other industries supporting the use.
Honing is generally performed by a honing machine. The machine tool spindle and the honing head are generally floating joints; however, in order to improve the ability to correct the geometry of the workpiece, a rigid joint can also be used. When boring, the outer circumference of the honing head is usually set with 2~10 oilstones, which are driven by the machine tool spindle to rotate in the hole and simultaneously reciprocate linearly. This is the main motion; at the same time, the oilstone is evenly controlled by the spring or hydraulic pressure in the honing head. Externally rising, radial feed is made to the wall of the hole being machined.
Finishing of the finished surface with a whetstone (also known as a honing stick) embedded in the honing head (see cutting). Honing is mainly used for processing various cylindrical holes with a hole diameter of 5 to 500 mm or more, such as cylinders, valve holes, connecting rod holes and case holes, etc. The ratio of the hole depth to the hole diameter can be 10 or even larger. Under certain conditions, honing can also process outer circles, planes, spheres and tooth surfaces. The surface roughness of cylindrical honing is generally up to Ra0.32~0.08μm, and it can reach Ra0.04μm or less in fine boring, and it can improve geometric precision in a small amount, and the processing precision can reach IT7~4. The surface quality of the plane honing is slightly worse.