The portable line boring machine is the special equipment for processing deep hole workpieces of oil cylinders, cylinders, and hydraulic cylinders. It can also process spindle holes, blind holes, and stepped holes of machine tools. The machine tool can not only undertake all kinds of drilling and boring but also can carry out rolling processing. The internal chip removal method or the external chip removal method is used for drilling. The machine bed has strong rigidity, good precision retention, and a wide range of spindle speeds, and the feed system is driven by an AC servo motor, which can meet the needs of various deep hole machining processes. The boring machine is also used for boring the cylinder holes and cylinder liner inner holes of internal combustion engines such as automobiles and tractors, and can also be used for precision boring processing of the inner holes of other mechanical parts.
The positioning device of the boring machine is characterized in that it includes a positioning seat, a positioning top core, and at least three identical positioning columns, the positioning seat includes a support seat and a positioning sleeve, and at least three positioning sleeves are provided on the side wall of the positioning sleeve. The through-holes matched with the positioning columns, each through-hole is perpendicular to the center line of the positioning sleeve, the positioning top core is in the shape of a nail, its fixed end is provided with a nail cap, and its working end is a cone, and the cone is against the inner end of each positioning post. Compared with the prior art, the utility model has the beneficial effects that the positioning device of the cylinder boring machine has the advantages of simple structure, convenient use, accurate positioning, low cost, easy realization, and greatly improved production efficiency.
