Processing location: Inner hole of the box body
Workpiece material: gray cast iron
Hardness: HB200-300
Processing procedure: precision boring
Blade: Cubic Boron Nitride Composite Blade
The gearbox housing is one of the important parts of a car, which assembles some shafts, sleeves, gears and other components together to maintain their correct mutual position. Therefore, the assembly accuracy of these parts box components and the performance and lifespan of the machine after assembly are largely determined by the machining quality of the box itself. Grey cast iron is often used as the material for gearboxes because it has good wear resistance, machinability, low cost, and can also be made of cast steel. For the mechanical processing of cast iron gearbox housing blanks with slag inclusions and pores, it is difficult to fully meet the processing characteristics of the gearbox housing using traditional processing methods. In order to reduce the time for tool alignment and change, and improve the efficiency of large-scale processing, CBN inserts (multi tooth milling cutters) with multiple edges that can be rotated can be selected for easy loading and unloading when processing gearbox housings. One blade can process 70-100 pieces, and the other blade can be replaced after wear, improving processing efficiency by 50-70%. When processing smaller gearbox housing hole systems, it is also often carried out on universal machine tools such as vertical milling machines and horizontal milling machines. For hole processing, it is relatively difficult. A T-shaped milling cutter developed by Bote Company (TNGA series) CBN blades are specifically designed for boring holes. CBN boring blades can ensure the required smoothness, dimensional accuracy, and geometric accuracy. The process of replacing grinding with vehicles is widely used in the mass production of heavy-duty vehicle transmissions, solving the difficulties of traditional grinding processes and achieving significant production benefits. In addition, the generated chips are easy to recycle and process, which further reflects the green and environmentally friendly processing technology.
