Aperture of inclined oil of 16V280 crankshaft gear and inside of craft of treatment of aperture oil groove improve

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When undertaking technological process decides, when two treatment unit has opposite place when the requirement, can machine what assure positional dimension harder unit go ahead of the rest, serve as consult fiducial; And process the treatment unit that can have be adjustmented appropriately inside certain limits unit as sequel, make sure relative position asks between two treatment unit effectively so. Sketch map of aperture of crankshaft gear inclined oil of 1 problem put forward gear of crankshaft of 16V280 diesel engine (see figure) it is support of crankshaft of the Kongyu inside its be filled with too cooperate to deliver torque and dynamic. To can achieve booked interference, need to pass oil pressure opportunity pressure of the infuse in aperture of inclined oil of gear of Xiang Qu axis is oily, support oil pressure goes up the aperture inside gear, make the aperture inside gear and crankshaft surface form oily film at the same time, make age wheel load is installed or disassemble the job can be finished smoothly. In actual press fitting or disassemble when crankshaft gear, often compare difficulty. Make discover after observation through the objective that comes down to disassembling: Because crankshaft gear is inclined oily aperture and inside aperture pressing oil groove does not have completely mutual be well versed in, cause oily fluid discharge to decrease, oil pressure drops, the aperture inside gear and axial head surface cannot form effective oil film, cause gear press fitting or disassemble the operation is difficult. 2 case study from the analysis craft hand searchs inclined oily Kong He to press oil groove to fail related its the reason of completely mutual be well versed in. The treatment technological process of crankshaft gear is: Half fine vehicle (→ of 1) → gear hobbing goes half essence of stress → car (2) → inserts keyway → to get surface grinding → of → of inclined oily aperture to grind inside nitrogen of tooth flank of → of form of aperture → roll flute is changed. Its craft characteristic is in half fine vehicle (be over with respect to the car when 2) press oil groove, need not go up again after bore so lathe presses oil groove into travel turning, can decrease to machine working procedure together. Getting inclined hole process is to be after working procedure of turning pressing oil groove. Via analysing discovery the problem goes here. Can see by attached drawing, the diameter of inclined oily aperture has 3mm only. If the tigidity of broach is very good, in bore process, broach suffers radial to cutting fights the action of force and do not happen bring slant, good according to be being calculated beforehand bore place is on appropriative bore clamping apparatus undertake bore is to be able to accomplish inclined oil Kong He oil groove is complete of mutual be well versed in. But in fact, when because the broach of diametical 3mm is being gotten,cutting deep hole (grow diameter comparing to be 15 above at least from what this bit can see in the graph) very incidental bring slant. Encounter this kind of situation, it is to pass the axes position according to inclined oily aperture to come normally oil groove of the aperture inside new turning treatment, make with inclined complete be well versed in. Actually machine again already caused repair to affect manufacturing schedule already, increased labor strength of the worker again. Accordingly, press groove to inclined oily Kong He of treatment art improve appear very necessary. The improvement of 3 treatment craft passes the analysis of afore-mentioned pair of circumstances, the decision is used adjust crankshaft gear inclined oily aperture and the treatment technological process that control oil groove will solve inclined smoke Kong He pressing to smoke groove cannot the problem of interrogate of property of be used to of completely mutual be well versed in. Because the aperture inside gear presses oil groove to be in gear cutting,not be crucial labor situation, because this decision will get scarfing oil,Kong Gong foreword is put before turning controls gasoline tank process. So primary relevant technological process is with respect to the change; Half fine vehicle (→ of gear hobbing of 1) → goes half essence of stress → car (2) → inserts keyway → to get car of → of inclined oily aperture to press surface grinding → of oil groove → to grind inside nitrogen of tooth flank of → of form of aperture → roll flute is changed. The inclined oily Kong Xianhang that assures the position harder is machined, control oil groove process in follow-up turning so in, operation personnel is OK according to inclined oily aperture specific deflection sads besides, hold the turning size that approachs oil groove and position position, from go up at all avoided inclined oily Kong He to press oil groove cannot the phenomenon of completely mutual be well versed in. Although a turning working procedure increased in this technological process, but from improve product quality, assure to produce metre, reduce the respect such as worker labor intensity the consideration is very necessary still. After this craft is carried out, operate the worker's welcome, the press fitting of gear and disassemble very successful, cast again have the appearance such as occurrence do poorly done work over again. When 4 conclusion are undertaking technological process decides, when two treatment unit has opposite place when the requirement, can machine what assure positional dimension harder unit go ahead of the rest, serve as consult fiducial; And process the treatment unit that can have be adjustmented appropriately inside certain limits unit as sequel, make sure relative position asks between two treatment unit effectively so. Can think, in effective product treatment, for the treatment unit that asks to there is the place on blueprint, should accord with only measure the effect equivalent principle, can use article place to narrate " fiducial changeover " law. CNC Milling CNC Machining