Use what special and prejudicial clamping apparatus machines eccentric part to discuss

Summary: ? Regret is troubled by Tao  to mast Mo Lei swings collect frighten  but  of ぜ of grave of    mires screen of bail of sunken school  solemn breed of  of dispute of talk in one's sleep of core of eyebrow of extensive swollen ㄓ guides  of rotten know of Pang of  of core Lu  can eyebrow of  of  of languid of herd of    : Eccentric part, clamping apparatus one, eccentric part is in foreword the application on mechanical equipment is very wide, but the treatment craft of eccentric part is more complex, main problem is worse hold good eccentric throw, inaccessible corresponding tolerancepublic errand requirement, the article from prejudicial research setting out designed a difficulty of treatment the treatment method of a kind of significant eccentric part. 2, conventional treatment is prejudicial the method is prejudicial workpiece is a spare parts outside round the circle outside mixing or outside circle and inside the axes of aperture is parallel and not photograph coincide, slant the workpiece of a distance. The distance between these two parallel axes calls eccentric throw. Outside circle and outside the part with eccentric circle is called eccentric shafe or prejudicial dish; Outside circle and inside the part with eccentric aperture cries prejudicial set. If pursue,1 is shown. Graph 1 　 is in mechanical drive, circumgyrate motion turns into move back and forth moves point-blank or move back and forth moves point-blank turn into circumgyrate moves, use eccentric part to finish commonly. For example the lubricant pump that lathe headstock drives with prejudicial workpiece, the crankshaft in car engine. Eccentric shafe, prejudicial covering is commonly machine on lathe. Their treatment principle is basic and same; Basically be to installing clip respect to take step, the axes of the eccentric part that machines need namely searchs to arriving with coincide of photograph of axis of rotation of lathe main shaft. The method of prejudicial workpiece has average car 5 kinds, get on a car in 3 ungual chuck namely prejudicial workpiece, the car goes up in 4 ungual chuck prejudicial workpiece, in the car between two tips prejudicial workpiece, the car goes up in prejudicial chuck prejudicial workpiece, the car goes up in special fixture prejudicial workpiece. 3, traditional car is prejudicial craft analyses 　 1, use 3 ungual chuck to install clip 　 (1) the prejudicial work with turning method shorter length, turning can undertake on 3 ungual chuck. Slant the blame in prejudicial workpiece first of heart part outside round car is good, in chuck random subsequently claw of a card and workpiece accept place scale between, fill up the spacer that chooses good ply beforehand together, via corrective generatrix and eccentric throw, and workpiece clamp hind, can turning. Spacer ply can be calculated with similar formula; ＝ of spacer ply X 1.

) of 5e(eccentric throw. If make calculation a few more mathematical, need to take K of eccentric throw correction to calculate and adjust spacer ply in similar formula, similar formula is: Spacer ply X=1.

≈ of K of 5e+k 　 　 1.

E=e-e of △ of 　 of 　 of 5 △ E measures type in: E---Workpiece eccentric throw; K---Eccentric throw correction, losing decide by actual measurement result; △ E---Try E of 　 of 　 of; of error of eccentric throw of the actual measurement after cutting to measure---Try after cutting, actual measurement eccentric throw. (2) when workpiece of the measurement of prejudicial workpiece, examination adjusts corrective side generatrix and eccentric throw, advocate if use contain magnetic force to express dial gauge is on lathe undertake (following graphs 2 left) , till accord with a requirement rear can undertake turning. Whether is the requirement accorded with to decide eccentric throw after it is good to need workpiece car, still need to undertake be checkinged finally. The method is in putting work into V swage, measure in eccentric place with dial gauge, slow and rotational workpiece, observe its are jumpy quantity. 2, use 4 ungual sheet to move chuck to install clip to pursue 2 　 look for goose-step is suddenly: ① , delimit the workpiece outfit of fine line is on 4 ungual chuck. When holding clip, adjust first the two claw of chuck, make its assume asymmetry position, additional two claw weigh the position in couples, the line is in workpiece eccentric in the center of chuck (meet a graph to go up in the bed 2 right) small flat of 　 　 ② , put away and delimit needle dish, pinpoint alignment eccentric line, corrective eccentric. Next the circle outside pinpoint alignment horizontal, if pursue 3 wrong place is shown, from left to right examination horizontal whether level. Turn workpiece 90 ° , check another with same method horizontal, originally closely next calorie of foot and check workpiece outfit places a condition. After calibration of ③ , workpiece, screw 4 claw again, can undertake cutting. Be in first when cutting, feed wants small, cutting deepness wants shallow, dosage of the cutting after waiting for workpiece car circle can increase appropriately, can damage otherwise lathe tool or make work shift. If pursue 3 right: Graph two kinds of afore-mentioned 3 methods are more commonly used treatment method, but put in defect. Outfit clip is more troublesome, search not easily, produce an error easily. And do not suit batch to produce. Be on afore-mentioned defect, I designed a kind of prejudicial fixture that is used technically at batch production. And threw production, achieved certain result. 4, the design of new-style and special prejudicial clamping apparatus is prejudicial round of car clamping apparatus is main it is to be used at batch to produce eccentric part, below with part drawing of this clamping apparatus (if pursue 4) . The moment that hold clip makes a list corrective Ф of 60 inside aperture, make sure public errand of position of spare parts appearance asks. The Zun Duan that the method that hold clip is clamping apparatus laying a plan holds clip work, pass dial gauge corrective, right end installs clip to go up from centering chuck in 3 claw. Graph 4 prejudicial round of car clamping apparatus 5, treatment example is used prejudicial treatment of round of car clamping apparatus is prejudicial annulus, it is prejudicial below annulus part drawing and treatment process card: Graph 5 prejudicial annulus prejudicial annulus treatment craft expresses part drawing of machining process card date 31A-341 in all name of 1 page spare parts is prejudicial technology of equipment of workshop section of workshop of content of working procedure of name of process of order of working procedure of 65X52 of Ф of over all dimension of semifinished product of round steel of sort of 45 semifinished product assembles round of material brand man-hour allows eventually, the car arrives outside round Ф 60 losing error 0.

01. (2) flat end panel of the car after corrective clamp reachs tune length 47. 5, 1X45 pouring wine cup (3) get on a car flat end panel of the car after corrective clamp reachs prejudicial clamping apparatus ply 47, 45X(25) of Ф of the circle outside car eccentric and get, Ф of aperture of bore with a reamer 35 to the requirement, lathe of metalworking of 1X45 pouring wine cup places clamping apparatus outfit to place 6 qualitative check with prejudicial car 7 delimit delimit 6 awl of Ф sell aperture, delimit metalworking of M8 screw line 8 auger get 6 awl of Ф to sell aperture unilateral, bottom outlet of the whorl that get M8 is Ф 6.

7 metalworking drilling machine pursues 6 prejudicial assembly drawing of round of spare parts treatment 6, last word article key is introductory batch the method holding clip that produces prejudicial work, and designed the fixture of form a complete set, place treatment into luggage through this clamping apparatus, a lot of more economic search time, and the demand of precision also rose a lot of. We still can machine the design concept that uses this clamping apparatus more much prejudicial work, the clamping apparatus that basically is the eccentric throw that differs through the design will undertake holding clip. Prejudicial the production of round of car clamping apparatus is simple, because this can be popularized extensively, raise economic benefits. CNC Milling