The invention relates to a
machining technology, in particular to a method for
machining a large-depth-
diameter-ratio
small hole of the
glass fiber composite-aluminum
alloy layered material. The technology comprises specific steps that firstly, two
drill bots of specification sizes are prepared, wherein the
drill bits comprise a hard
alloy drill bit used for
glass fiber composite
machining and a high-speed steel
drill bit used for aluminum
alloy machining; secondly, the thickness of the
glass fiber composite layer is measured and recorded, and the thickness of a rubber layer is measured and recorded; thirdly, a product is clamped, and it is ensured that during subsequent machining, tool feeding is achieved from one side of non
metal; fourthly, the hard alloy
drill bit is clamped, reasonable machining parameters are set, and after the glass
fiber composite is subject to peck drilling and is drilled through, tool retreating is achieved; fifthly, the feeding speed is reduced, and peck drilling is carried out until a certain depth is achieved, and tool retreating is achieved; sixthly, the high-speed steel
drill bit is replaced, the reasonable machining parameters are set, and peck drilling is carried out until the design depth is achieved, and tool retreating is carried out. Through the method, the problem of the high drill bit
breakage rate in the
small hole machining can be effectively solved, and the yield is greatly improved.