The positioning accuracy and repeated positioning accuracy of CNC lathe are very high, so it is easy to ensure the consistency of the size of a batch of parts. As long as the process design and program are correct and reasonable, combined with careful operation, the parts can obtain higher processing accuracy, and it is also convenient for the quality control of large-scale computer gong processing. CNC lathe is a technology intensive Mechatronics typical large-scale computer gong processing products, maintenance personnel need to understand both mechanical and microelectronic maintenance knowledge, but also equipped with better maintenance equipment.
- Using metal mold, filling mold under high pressure and high speed, rapid solidification under pressure is a metal forming method with high efficiency and high precision, but the manufacturing cost of die-casting machine and die-casting mold is high; mass production, small and medium-sized thin-walled castings mainly composed of zinc alloy, aluminum alloy, magnesium alloy and copper alloy, are also used for iron and steel castings.
- Use wax mould to make a whole refractory shell mold outside the wax mould. After the wax pattern is melted off by heating, it is poured by gravity. The casting has high precision and good surface quality, but the cost of die making is high and there are many processes. Manual operation, poor working conditions; various production batches, mainly carbon steel, alloy steel alloy and difficult to process high melting point alloy complex parts are suitable, casting quality is generally less than 10kg.
- Casting with metal mold under gravity can refine the structure of non-ferrous alloy castings. Gray iron castings are easy to produce white, with high productivity, no dust, high equipment cost, and poor labor conditions in manual operation. Mass production is mainly made of non-ferrous alloy, and can also be used for thick wall, simple or medium complex small and medium-sized castings of cast steel and cast iron.
- Using metal mold, graphite mold and sand mold to fill mold and solidify under gas pressure, the casting is compact, the metal yield is high, and the equipment is simple; single piece, small batch or mass production, medium large thin-walled casting mainly made of non-ferrous alloy.
- High precision pattern, self hardening refractory slurry, gravity casting, high precision casting, fine surface roughness, but expensive ceramic slurry; single piece, small batch production of medium, small, thick wall medium complex castings, especially suitable for metal mold, template, hot box and various kinds of hot forging die.
- Casting with metal sand or sand mold under the action of centrifugal force, and processing with computer gong, the structure of casting is compact, the equipment is simple, the cost is low, and the productivity is high, but the machining capacity is large; large quantities of iron pipe, copper sleeve, roller, metal bearing bush, cylinder sleeve and other rotary body castings are produced in single piece and batch.
- use foam polystyrene plastic moulds to replace wood or metal mold parts locally or completely, and burn them when pouring. It can save wood and simplify the working procedure, but the dust and harmful gas are relatively large; for medium and large castings produced in single piece or small batch, 1-2 pieces are suitable, or for the parts of castings with difficult mold removal. Machining is now accessible to many industries, it also has a lot of processing methods, such as, gantry grinding and so on, the machining center can choose the best process line and cutting parameters, effectively reduce the auxiliary time in processing, so as to improve production efficiency. The production efficiency of machining center is high. And because of its automatic tool changing function, it can usually save complex tooling, reduce the installation, adjustment and multiple tool setting of processing parts and other relatively complex and tedious work.
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