Summary: Introduced a few kinds of milling cutter of milling of whorl numerical control and milling method, and the process designing of milling of illustrate whorl numerical control. Is the thread machining method of foreword tradition basically: ? With maltose Yan archives of shoot a glance at of Yan of the sleep that cast aside take along sth to sb freezes enlighten have a nightmare of sole ぷ kills Zan onlying witch to knock at fear to pat slope of Yan of Rui Xie Ju to cast fact of of of stops barren calumnying Yan to cast aside arsine of box of north of have a nightmare of ぷ of of dredge of Kong Dou ニ of alliance of take along sth to sb, the treatment craft characteristic of all sorts of whorl milling cutter is different also. Dish milling cutter of whorl of form of bit body of form whorl mill is shown like graph 1(a) place, when the job, axes of milling cutter axes and workpiece tilts horn of lead of screw center diameter of a workpiece is entered, workpiece rotates a week, workpiece and milling cutter move in axial relatively a pitch. Walk along a knife to be able to cut a place to need whorl namely normally, working diagram is shown like graph 1(b) place. Make the same score stability to raise milling, age number should take much a tooth-like part of anything, and type of make it complex tooth form, in order to improve the cutting condition of two side edge. Dish form whorl milling cutter basically cuts pitch with Yu Xi the whorl with bigger, longer length, the head that be like sheet or whorl of double head echelon and worm. (A)(b) pursues milling cutter of 1 dish of form whorl and its job sketch map pursue 2 comb form whorl milling cutter reachs his working sketch map (A)(b) pursues 3 whorl get milling cutter and its whorl milling to machine sketch map to pursue contrail of 4 whorl milling cutter combs form whorl milling cutter combs form whorl milling cutter can be regarded is a certain number of dish, if pursue,2 are shown. When treatment, milling cutter and workpiece axes are parallel, and milling cutter and workpiece edge whorl are contacted endlong. Accordingly, the workpiece when cutting rotates a week, workpiece and milling cutter photograph are mobile to axial a pitch, can cut a place to need whorl namely. Comb form whorl milling cutter basically is used within the triangle with treatment length is short and small pitch, outside columnar whorl and conic whorl. Compound whorl milling cutter manufactures efficiency to rise, the condition that can not changing a knife the next time the gender cuts a whorl, the compound whorl milling cutter that if graph 3(a) place is shown,can use, whorl gets milling cutter. The cutting blade of whorl getting milling cutter apparently see some resemble tap, differ with tap actually, cheng rises without helix on cutting tool, the helix in treatment relies on implementation of machine tool motion. The working sketch map when getting whorl of milling cutter milling with whorl is like graph 3(b) place to show, its measure is: The 1st pace, whorl gets milling cutter to move to workpiece safety plane quickly; The 2nd pace, whorl gets milling cutter bore to hole depth dimension; The 3rd pace, whorl gets milling cutter to promote to whorl depth size; The 4th pace, whorl getting milling cutter cuts person whorl with circular arc initial drop; The 5th pace, whorl gets milling cutter to circle whorl axes to make the interpolation motion of direction of X, Y, make parallel at the same time at axes + Z direction moves, namely every circle whorl axes to run 360 ° , along + Z direction rises a pitch, contrail of motion of 3 axes linkage is cutting tool one corkscrewed yarn; The 6th pace, whorl gets milling cutter to retreat a knife from initial drop with circular arc; The 7th pace, whorl gets milling cutter to be retreated quickly to workpiece safety plane, preparation machines below one aperture. The athletic contrail of whorl of milling of whorl getting milling cutter is shown 4 times like the graph. Process designing of 2 whorl milling shows with M20 × 1. Milling of the whorl inside 5 dextrorotation machines example to show the process designing method of thread machining. Workpiece material: Cast-iron; Diameter of whorl bottom outlet: Di18.
38mm; Whorl diameter: Do=20mm; Whorl length: L=25mm; pitch: P=1.
5mm; Cutting tool: Hard alloy whorl gets milling cutter; D2=10mm of milling cutter diameter; Milling means: Arrange mill; Cutting speed 50m/min; Milling feed: 0.
1mm/ tine. Rotate speed of parameter computation main shaft is: N=(1000v)/(D2p)=(1000 × 50)/(10x3.
14)=1592(r/min) mill tooth counts Z=1, f=0 of every tine feed.
1mm, blade of milling cutter cutting is in feed speed to be: V1=fzn=0.
1 × of 1 × 1592=159.
Speed of feed of center of 2(mm/min) milling cutter is: V2=v1(D0-D2)/D0=159.
2 × (20-10)/20=79.
6(mm/min) sets safety to be apart from CL=0.
5mm, cut circular arc radius to be: Re=(Ri-CL)2+R02=(9.
19-0.
5)2+102=8.
782R02 × 10 cut circular arc angle to be: B=180 ° - Arcsin[(Ri-CL)/Re)=180 ° - Arcsin[(9.
19-0.
5)/8.
78]=180 ° - 84.
12 ° =95.
88 ° cut the Z axis displacement when circular arc to be: Za=Pa/360 ° =1.
90 ° of 5 × / 360 ° =0.
375(mm) cuts coordinate of circular arc start to be: {X=0Y=-Ri+CL=-9.
19+0.
5=-8.
68Z=-(L-Za)=-(25+0.
375)=-25.
Program of 375 whorl milling (FUNUC system) % N10 G90 G00 G57 X0.
Y0.
N20 G43 H10 Z0.
M3 S1592 N30 G91 G00 X0.
Y0.
Z-25.
375N40 G41 D60 X0.
Y-8.
68Z0.
N50 G03 X10.
Y8.
68Z0.
375R8.
78F79.
6N60 G03 X0.
Y0.
Z1.
5I-10.
J0.
N70 G03 X-10.
Y8.
68Z0.
375R8.
78N80 G00 G40 X0.
Y-8.
68Z0.
N90 G49 G57 G00 Z200.
M5 N100 M30 CNC Milling