The function of drilling machine of numerical control drum reachs application
One, overview
Drum of boiler of utility boiler, industry is general size is larger, weight is greater, rotate, move is not easy. The need on drum drills hole, use at wearing a canal. These aperture diameters are a few millimeter commonly, the amount of aperture is much, density is big, the positional precision demand of aperture is high. Go up in drum or the workpiece of structure of other canister shape, specific to manufacturing technology, how to drill the hole that accords with a requirement with less time namely.
Traditional drum bore procedure includes to underline, strong key point of draw a design, auger guide aperture, reaming. Caldron canister is reel craft commonly make, often the predestined relationship outside drum its circularity error is bigger. If do not have special rotating clamp to provide, the point of view that measures cipher out according to arc length however will underline the position certainly, the likelihood causes position of many aperture deviate theory, to follow-up intubate butt joint installation increases great trouble. Additional, observation of Chan Ping naked eye, pull feet to measure, make mistake more easily also. Underlining is the first working procedure, use the position of affirmatory aperture, underlining the job is by what have experience experienced worker is finished commonly. When processing drum work with rocker getting, the outfit of workpiece is placed, to the adaptability of different measurement workpiece, it is a problem. It is to get no matter guide aperture or reaming, it is to use handgun getting, magnetic force getting or rocker to get no matter, jockey person should adjust broach position and drum position in time, need to concentrate energy, very careful. Whole process comes down, drum retroflexions back and forth likely 3 arrive 4 times. Efficiency is low, worker labor strength is greater. Make mistake easily
Drilling machine of drum numerical control is the need that drum of contented boiler industry machines, the law developed the drilling machine of drum numerical control that is used at drum treatment because of numerical control company.
The clip of drum holds: Special chuck, two end have drum each: The head carries chuck, tail end chuck. The head carries chuck to be active dish, by drive of servo electric machinery, use at accurate graduation to measure reach fixed position, tail end chuck is driven plate, follow active dish of roll. Chuck of tail end driven can move along drum axial, in order to get used to the drum of different length. Its structure and working principle, be similar to the chuck on common lathe. The card on chuck is ungual by hydraulic pressure drive, clutch workpiece or loosen. Chuck can block the workpiece diameter of outfit and length, because of the client's requirement change somewhat. With HD1715 and HD1212 the drilling machine of drum numerical control of two kinds of model is exemple, HD1715 can machine a diameter to be 1700mm greatly most, length is 15000mm, ply is the drum of 50mm, HD1212 can machine a diameter to be 1200mm greatly most, length is 12000mm, ply is the drum of 50mm. When doing machine tool plan to design, design personnel has considered, because of the change of work standards, cause the change of machine tool structure likely. Adopted flexible design plan. When work standards varies, need to alter only less part can produce a new model.
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