Deep hole machine tool design of the three key links, let's have a specific understanding, as follows;
In the first step, the nozzle is sprayed into the back of the inner drill pipe at a high speed, forming a low pressure area in the inner cavity of the inner drill pipe. The cutting fluid and chips discharged from the cutting area are sucked backward. Under the double effects of pushing and sucking, the chips are quickly discharged outward. Therefore, the cutting fluid pressure is low and stable, not easy to spill out, and the chip removal is smooth, which reduces the sealing requirements of the drilling system and ensures that the drilling process can be carried out under a large cutting amount
Link 2, the working surface, its processing quality is lower than the system of internal chip removal. The system is mainly used for small diameter (ltmm) deep hole processing. BTA system: BTA system belongs to internal chip removal mode, and its structure is mainly composed of center frame, oil feeder, drill pipe coupling and cooling and lubricating oil system. The function of oil feeder in BTA system is different from centralizer in gun drilling system. In addition to guiding centralization, the oil feeder in BTA system has different functions
Design of special machine tool for deep hole machining. Chip processing is a key technology in deep hole machining. Chip breaking can not be completely pursued. For some difficult cutting materials and deep hole with small diameter, continuous chip is often the normal premise. Reasonable guide cooling, lubrication and chip removal, cutting treatment and reasonable guidance constitute the core of deep hole machining. The tools, devices and equipment used constitute the deep hole processing system
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