Machine on common lathe nonstandard of whorl discuss

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Nonstandard whorl is to point to to there is the corresponding pitch, method that uses groovy whorl mention on lathe nameplate also cannot the whorl that the car gives this pitch. 1 overview is nonstandard whorl is to point to to there is the corresponding pitch, method that uses groovy whorl mention on lathe nameplate also cannot the whorl that the car gives this pitch. In routine, the pitch that has a lot of thread via often can be being encountered cannot be found on the nameplate of lathe, handle also does not know the condition that how hangs, also cannot machine this kind of whorl of course. Encounter petty (pitch <0.

Of 9mm) nonstandard when whorl, still can use polished rod to drive whorl lathe tool, go identical or the feed of close, one knife car is become. But big to exceeding (of pitch ＞ 100mm nonstandard when whorl, do not have method. Such whorl is outer appoint often also appear in the treatment of product and plant overhaul product. For example, come back the T180 × 126/3 of the drive on the attrition compressor that presses a workshop is big lever and whorl of T145 × 108/3 and outside appoint the whorl of T125 × 78/2 in the product is nonstandard whorl, so this problem is couldn't get solve, to the spare parts of factory crux equipment production treatment and diversified economy project have huge effect. 2 lathe motion analyses the combination that lathe moves through 2 kinds to machine whorl: One kind is advocate motion, namely lathe main shaft drives workpiece to turn; Another kind is auxiliary motion, motivation passes mention box to reach knife case from box of lathe main shaft, drive whorl knife to take appropriate line campaign thereby, namely workpiece turns advocate, lathe tool takes certain space. These 2 kinds of motion are short of one cannot. The rotate speed of car whorl and lathe main shaft has particular concern, for example, big pitch uses low rotate speed, small pitch uses high rotate speed to wait, but having very close relationship however with feed, big pitch takes a knife fast, small pitch walks along a knife to be gotten slow much. So, how does ability take knife speed according to needing adjust? This is about to ask according to blueprint, hang handle position according to what appoint on lathe nameplate, hang correctly put all sorts of handle. 3 solve measure course to fumble for long, combine rule of lathe interior structure, drive to undertake an analysis, the pitch that thinks to be able to ask according to blueprint, redesign mention box gear, assemble afresh on gear of new clench the teeth. Carry research, discovery can calculate according to the following formula number and driven teeth of a cogwheel count a new active teeth of a cogwheel in mention box: In type of A × C=1BD: A -- tine counts mention box driving pulley; B -- number of teeth of a cogwheel of mention box driven: C -- the pitch that goes up with the lathe nameplate of close of blueprint requirement pitch; D -- the pitch that requires treatment. Because the center of the driving pulley of mention box and driven pulley is apart from,can change, accordingly, the choice of A, B is easier, want to machine one echelon whorl for example: Thread outside diameter is 125mm, whorl type is " T " model, lead is 78 Mm, head number is 2. Because lathe itself does not have lead to be the pitch of 78mm, there is lead to be the pitch of 80mm and its close in Dan Ming card, because this can be gotten by afore-mentioned formula,register round of speed ratio and number of tine teeth of a cogwheel newly. Era gets into formula: Original owner of 1(of BD4278 ≠ of × of A × C=42 moves the tine number of gear and driven gear to all be 42) , want to make formula holds water, must choose as far as possible to it the tine number of close, because this need change is active,the tine of 80 gear and driven gear is counted, namely 39 × 80=1, see not hard, turn into number of active teeth of a cogwheel by 42 tine namely 39 tine, driven pulley turns into by 42 tine 404078 tine, and case taking a knife each handle press the pitch of the 80mm on plate hung up. The calculation of driving pulley diameter is very simple: Tine of × of M of modulus of D= of pitch circle diameter counts Z, m=2.

25(namely the fixed modulus) of mention box, d=2.

25 × 39=87.

75, d=d+2m of gear external diameter, accordingly, d of driving pulley external diameter advocate =87.

75+2 × 2.

25=92.

25, the aperture inside gear and ply and old gear are same. Driven pulley external diameter presses this method computation likewise. 4 conclusion assemble the driving pulley that makes afresh and driven pulley in lathe to register round of case in, OK the whorl that the car goes place to need comes. Now, company of brake of plant of eyebrow hill car returns the attrition compressor that presses a workshop the T180 × 126/3 of lever of 2 big silk, t145 × 108/3 is nonstandard whorl, use this kind of method to solve namely, can say to be solved basically on standard lathe the car goes nonstandard whorl this one difficult problem, assured to machine plan, satisfied manufacturing requirement. The attention answers in the operation: Nonstandard the spider grain that whorl must be the pitch photograph adjacent that goes up with lathe nameplate or close; The position of the data in formula cannot alter at will; Hang annulus when, the position of driving pulley and driven pulley cannot hang a fault. CNC Milling CNC Machining