The numerical control blade of compound angle cutting tool grinds the space

98 ± 0.

100 dimension, need to use normally try cut a law to undertake examining. Because the accurate blade wear of this cutting tool is crucial question. The blade of face of the Ⅰ on a knife that show Huo, Ⅱ , Ⅲ , Ⅳ grinds article to in an attempt to the method that for exemple specification space blade of numerical control of compound angle cutting tool grinds. 2, edge of compound angle Huo grinds coordinate of athletic model machine tool to fasten blade to grind a space the machine tool of compound angle cutting tool needs to install 5 coordinate commonly (3 mobile coordinate and) of 2 rotational coordinate. If graph 2a place is shown,typical machine tool coordinate is fastened, among them X axis is machine tool workbench fore-and-aft shift, y axis sneaks away for the machine tool board (or emery wheel head is worn) transverse shift, z axis is emery wheel head to move up and down, c axis is machine tool circular table (horizontal revolving stage) rotational, d axis is workpiece main shaft (cutting tool axes) rotational. The shift of axis of X, Y, Z is mutual and perpendicular mutual independence, horizontal revolving stage is located in over machine tool workbench and move together along with workbench, its axes and Z axis photograph are consistent, workpiece main shaft is located in over horizontal revolving stage and turn together along with horizontal revolving stage, its axes and axis of horizontal revolving stage are vertical intersect, its node is set fasten origin for coordinate. To make cutting tool allows to locate truly, cutting tool installs the position on workpiece main shaft to should be adjusted. Normally installation of pedestal of workpiece main shaft is on small slide, mobile small slide, can make direction of axes of main shaft of workpiece of cutting tool edge (U to) mobile. Horn sets the unit law vector of knife face I to see graph 3) for I(to positional computation, have: I=[Xni]=[CosgoisinbHi] Yni CosgoicosbHi Zni Singoi(1) pursues the directional complement that department of coordinate of 2 machine tools and cutting tool blade grind the Goi in type of position of rest to be vector of law of knife face I (as planar as XOY coordinate included angle) ; What BHi is vector of law of knife face I to go up in XOY coordinate plane is umbriferous with Y axis included angle. If use blade of bowl form emery wheel to grind (graph 2b) , and plane of job of your emery wheel and Y axis photograph are perpendicular, when blade grinds knife face I, should make of its law vector and Y axis turn over directional photograph to agree. Can set out by the position of graph 2b for this undertake twice below gyral: Your cutting tool circles oneself axes (it is X axis right now) turn Wd horn, make the law vector of knife face I turns to XOY plane (the 4th quadrant) on, have apparently: After Wd=-arctan(Zni) Yni(2) rotates via this, I turns to the position of I: I=[Xni]=[Xni] Yni Ynicoswdi-znisinwdi Zni Ynisinwdi+znicoswdi(3) pursues your cutting tool circles vector of magic art of 3 knives cover Z axis turns Wc horn, make the law vector of knife face I turns to buy of Y position of axle, due: Wci=arctan(Xni) Yni(4) for example, show in graph 2b place locally, the law vector of knife face I and the ° of included angle Go1=5 with planar XOY, what its go up in XOY plane is umbriferous the ° of included angle BH1=150 with Y axis, by type (1) , (2) , (3) , (4) can beg respectively piece: 1=[0.

499] ; Wd1=3.

463 ° ; 1=[0.

499] ; Wc1=-29.

955 ° - 0.

865 -0.

866 0.

053 0 can beg an other knife face to rub position of rest by blade with manage (graph 2b place shows the position) the corner Wd that turns to blade to grind the position and Wc. Dimensional coordinate computation takes on knife face a bit P, its vector expresses to be: Dot of P=[Xpypzp]P and cutting tool circle oneself axes together (graph 2b position is X axis) turn after Wd horn, p turns into P1: P1=[Xp1]=[Xp] Yp1 Ypcoswd-zpsinwd Zp1 Ypsinwd+zpcoswd(5)p1 circles Z axis to turn after Wd horn, turn into P2: P2=[Xp2]=[Xp1coswc-yp1sinwc] Yp2 Xp1sinwc+yp1coswc Zp2 Zp1(6) for example, the P1 on knife face I nods the vector that shows the position in graph 2b place to be: P=[56.

440-11.

7510] classics circles oneself axes (X axis) rotate Wd1, circle Z axis to rotate again get after Wc1: P2=[43.

044-38.

344-0.

You Ren of I of face of knife of momentum of each axis carry grinds 710] machine tool initiative position moves to grind the position to blade, the carry momentum of each reference axis is as follows: The XPR in type of {Dxi=xPR-xpi2Dyi=yPR-ypi2Dxi=zPR-zpi2Ddi=wddiDci=wcdi (7) , YPR, ZPR grinds the coordinate of the reference point on initiative seat emery wheel for blade, xpi2, Ypi2, Zpi2 is knife face I to go up to nod You Ren to grind initiative position classics to circle oneself axes to the knife (X axis) rotate Wdi horn, circle Z axis to rotate again the coordinate after Wci horn. Type (7) can understand for the space blade of compound angle cutting tool grinds athletic model. 3, when the blade of knife of compound angle Huo grinds actual blade, want to determine the initiative position of cutting tool and emery wheel above all. The Lv of affirmatory take an examination of initiative position is mixed to the knife adjust convenient, the emery wheel in should preventing blade to grind a process and workpiece main shaft or blade of cutting tool blame grind partial interference. Graph 2b is a kind of feasible plan, be in initiative locally emery wheel axes and coincide of axis of machine tool Y, emery wheel working face searchs with the oriented belt of cutting tool, workpiece main shaft (cutting tool axes) close with X gross ril load, knife face V is located in horizontal position, make the F30 on cutting tool.

938 sectional be apart from coordinate origin to be one certain numerical value (this exemple is surely 50, this value can pass the 1st knife to obtain) of the face to the knife. Choose emery wheel reference point according to the size of emery wheel, this exemple takes reference point to be: Rw=[48-22.

Primitive parameter and blade wear face of 50] each knife vector of magic art of cover of knife of G0(of primitive parameter of Ⅳ of Ⅲ of Ⅱ of Ⅰ of face of knife of parameter watch project and XOY planar included angle) (° ) vector of magic art of cover of knife of 3 15 3 15 BH(is in XOY is planar and umbriferous with Y axis included angle) (° ) face of knife of 150 150 110 110 X0(.

44 56.

Y coordinate is nodded to the knife on face of knife of 44 52 52 Y0() (Mm) -11.

751 -11.

721 -9.

974 -9.

Z coordinate is nodded to the knife on face of 897 Z0(knife) (Mm) 0 0.

5 0 0.

5 blade grind parameter Wd(to circle X axis corner) (° ) 3.

463 17.

192 8.

712 38.

076 Wc(circles Z axis corner) (° ) - 29.

955 -28.

879 -67.

785 -65.

186Dx(X axis compensation) (Mm) 4.

956 4.

058 39.

284 33.

529Dy(Y axis compensation) (Mm) 15.

844 14.

692 29.

704 28.

098Dz(Z axis compensation) (Mm) 0.

71 2.

987 1.

511 5.

71 note: The primitive parameter of face of knife of the Ⅲ in the watch, Ⅳ is classics cutting tool circle oneself axes to rotate the parameter after 90 ° is on face of Ⅰ , Ⅱ , Ⅲ , Ⅳ choose P1, P2, P3, P4 respectively the dot is pair of knives to nod (graph 2) has consideration, its are primitive right watch of data and computational result rank. If above all blade wears Ⅰ face, blade of row of the Ⅰ in pressing a watch grinds parameter shift machine tool each coordinate, adjust small procrastinate board make Ⅰ face and emery wheel working face are contacted, right now cutting tool F30.

938 sectional decide automatically with the distance 50mm of coordinate origin. After proper feed, in the distance with X direction certain feed, the blade of achievable Ⅰ face is ground. Receive go down the blade of face of Ⅱ , Ⅲ , Ⅳ is ground need not return initiative position, and the difference that needs to press blade of each knife face to grind parameter orderly only adjusts a machine tool the position of each axis, the blade that can realize each knife extent is ground. Of course, grind in actual blade arrangement still needs to allow the operation such as knife, graduation in the process. 4, conclusion the article is with reamer of spiracle mouth Huo exemple, showed the principle that blade of numerical control of knife of compound angle Huo grinds the space and method, this method applies to other space as much the numerical control blade of compound angle cutting tool is ground. The core that article place narrates a method is to apply vector method to calculate the knife range that needs blade to grind grinds initiative position to move to grind positional machine tool to actual blade by blade the athletic quantity of each axis, measure order of work out CNC Machining by this motion, can realize a space the numerical control blade of compound angle cutting tool is ground. Afore-mentioned principles and method, accurate revolving stage and dividing head are configured on common tool grinding machine, also can realize a space the blade of compound angle cutting tool is ground. CNC Milling CNC Machining