Summary: The article introduces a kind of new-style structure inside aperture boring device (boring blade holder) , in this boring blade holder jacket clip bores hole the deep aperture boring that arbor can realize long way 12-14, all sorts of craft that can assure to enough tigidity will satisfy deep aperture boring ask. Keyword: Inside aperture, blade holder of boring, boring one, center lathe of foreword numerical control serves as a kind of current equipment, can finish all sorts of axes kind, dish kind of treatment of the spare parts, can turning the curved surface of inside and outside of all sorts of whorl, circular arc, conic, swing tower. As the ceaseless development of modern technology, the working procedure in the aperture inside center lathe boring is commonner and commonner, especially boring deepness is bigger inside the working procedure of aperture is increasing also. The means in the aperture inside the boring on numerical control center lathe is very much, basically have the following kinds: 1, turning on tower tool carrier, bore hole through appropriative the knife places implementation, main component turns for common vertical end of type of tower tool carrier, swallow vertical turns type of tower tool carrier and horizontal turn type of tower tool carrier, see figure below place of A, B, C shows: Graph A common vertical turns end of swallow of B of graph of tower tool carrier vertical turns horizontal of C of graph of tower tool carrier turns of tower tool carrier 2, appropriative is passed on slide common bore hole device (boring blade holder) implementation, see figure below D place shows: Sketch map of blade holder of graph D common boring the means of the aperture inside treatment of afore-mentioned a few kinds of means, each have an advantage, place of graph A, B, C shows a structure to suit to machine diametical φ 80mm the following, long way compares ≤ 3 of the left and right sides inside aperture, and suit relatively lesser cut difficult situation; If all sorts of parameter are more than above description, can appear brace up the knife reachs phenomenon letting a knife, bring about surface roughness of the aperture inside workpiece the value is greater, aperture is shown in " 8 " word, but the structure is simple, handle a side, it is the means of the aperture inside a kind of more commonly used treatment. Graph D place shows a structure, can machine a diameter bigger and the deep aperture with long older way, but ordinary control is in shank diameter of common boring tool φ 130mm is the following; If boring cutter shank diameter is too big, will naturally cause lengthen of whole of boring blade holder, the tigidity of whole machining complex such as boring blade holder can get bigger weaken, place of E seeing a picture, F shows front of blade holder of graph E boring to be out of shape back end of blade holder of boring of F of sketch map graph is out of shape sketch map 2, the design of new-style boring blade holder from afore-mentioned foreword can, no matter be traditional knife posture bores hole,the knife is placed, still be common boring blade holder, cannot satisfy treatment the diameter is bigger and the deep aperture with long older way, for this, designed a kind of new-style boring blade holder, can avoid the appearance that place of occurrence graph E, F shows effectively, assure to be asked by all sorts of precision of the aperture inside treatment spare parts thereby. Boring blade holder drives implementation Z axis to losing directional feed by bed saddle, drive implementation X axis to losing directional feed by slide, see the graph shows 1 times: Graph boring blade holder installs sketch map of blade holder of 1 new-style boring to go up in slide, the lower part of the body by boring blade holder, the upper part of the body, slideway, pressing plate and fluctuation boring cutter cover composition, boring lever installation is in among body of fluctuation of boring blade holder in fluctuation boring broach shell, sell by bolt of a certain number of 6 horn head and fixed position decide closely. Installation of whole of private parts of boring blade holder is on slide, through bolt and pin close connection is on slide; Installation of slideway of its X direction is on bed saddle, comprise sliding slideway jointly with pressing plate deputy, drive by slide move along X axis; The ply of broach shell of different fluctuation boring can satisfy the clip of lever of different diameter boring to oppose a demand, realize the treatment requirement of different workpiece thereby. Boring blade holder is in installation process, need to measure slide above the height with main shaft center, deserve to blow boring blade holder to the lower part of the body again, assure main shaft center and boring lever center in all face; Of the installation tool reference plane that still needs to measure slideway at the same time and private parts of boring blade holder go up the height of slideway face is poor, grind slideway through matching below, achieve assemble a requirement; After completing afore-mentioned two order, still need to blow grind slideway deputy the slideway sticking model between board, achieve sliding slideway deputy assembly technical requirement, to assure slideway the smooth stability of deputy campaign process still needs to lubricate for slideway regularly. Its machine the operation of the process to be the same as the operation of numerical control lathe completely, if need to be in boring is deeper inside Kong Shi needs emulsion, can pass completely choose among piece water boring cutter will come true. 3, the boring blade holder of this structure passes conclusion trial-produce, manage a test in many treatment user, machining the deep Kong Shi of bigger diameter, can satisfy each technology requirement completely, proving this structure is reasonable, applicable. (civil from: In limited company of nimble machine tool) CNC Milling