Numerical control lathe dictates basically (below)

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Rough machining of 2) end panel is compound circulate (G72) statement form: Function of instruction of W Ff Ss Tt of Δ of U W of Δ of D Re G72 Pns Qnf U of G72 W Δ : Dividing cutting is outside undertaking along direction of parallel X axis, this instruction function and G71 are identical, if pursue,20 are shown. Does the instruction show: ? The meaning of W of U of , E, Ns, Nf, Δ , Δ and G71 are identical. Example: ? Bin?2, apply process designing of instruction of loop of end panel rough machining. Graph rough machining of 22 end panel is compound circular example pursues cutting of 23 fixed appearance is compound circular N010 G50 X150 Z100N020 G00 X41 Z1N030 G72 W1 R1N040 G72 P50 Q80U0.

1W0.

2Cutting of form of shape of solid of F100N050 G00 X41 Z-31N060 G01 X20 Z-20N070 Z-2N080 X14 Z1N090 G70 P50 Q80 F303) is compound circulate (G73) statement form: : of function of instruction of W Ff Ss Tt of Δ of U W of Δ of G73 Pns Qnf U of   of   of K Rd of Δ of I W of G73 U Δ ? ⒍ of shank of  of ぶ of excrement glow commonplace carries Fei Shangwei bursa on the back shine place of?3 of  of  of rostellum ぜ  is shown. Does the instruction show: ?  states X axial always retreats a knife to measure (radius is worth) ; Δ K states Z axial always cancels knife amount; D represents circular time; Ns represents finish machining line the suitable serial number of the first block; Nf states finish machining course is the last the suitable serial number of block; The finish machining surplus that Δ U shows X way (the diameter is worth) ; Δ W shows the finish machining surplus of Z direction. Cutting of form of ① solid shape is compound the characteristic that dictates circularly: A.

Cutting tool contrail is parallel the outline at workpiece, reason suits treatment to cast the preform;b that makes take shape with forge.

Quantity of back penetration of a cutting tool passes X axis direction to always retreat a knife to measure Δ I and Z axis direction to always retreat a knife to measure Δ K to divide respectively get;c with circular time D.

The cutting deepness of the set that always removes a knife to estimate Δ I and Δ K value and workpiece is concerned. Cutting of form of shape of ② use solid is compound circular instruction, should decide the dot that change a knife, loop nods A, cutting above all only then dot A ' the coordinate position with cutting terminus B. The graph on the analysis, a nods the circling point that it is abide, a ' the contour line that → B is workpiece, a → A ' the finish machining course that → B is cutting tool, the cutting tool when rough machining backs down from A dot nod to C, regressive distance is U /2 of Δ of Δ I + respectively, w of Δ of Δ K + , after such rough machining circulate W of U /2 of Δ of surplus of finish machining of automatic put apart, Δ . ③ arranges serial number Ns to describe the line that cutting tool cutting machines to the block between Nf. Example: If the graph is shown 14 times, apply fixed appearance cutting process designing of compound loop instruction. Graph cutting of 24 fixed appearance is compound circular example pursues N010 G50 X100 Z100N020 G00 X50 Z10N030 G73 U18 W5 R10N040 G73 P50 Q100 U0 of citing of 25 compound and fixed loops.

5W0.

5Vehicle of fine of F100N050 G01 X0 Z1N060 G03 X12 W-6 R6N070 G01 W-10N080 X20 W-15N090 W-13N100 G02 X34 W-7 R7N110 G70 P50 Q100 F304) is complex circulate (G70) statement form: Function of instruction of G70   Pns Qnf: After with G71, G72, G73 instruction rough machining ends, loop of usable finish machining dictates, make cutting tool undertakes A-A ` - the finish machining of B, (Like graph 24) the instruction explains: Ns expresses to assign finish machining route the suitable serial number of the first block; Nf expresses to assign finish machining route the suitable serial number of the last block; Instruction of loop of G70 ~ G73 calls N(ns) to come between N(nf) block, the subprogram cannot be called in block among them. 5) is compound and fixed circular citing (G71 and G70 process designing) treatment plan shows a part 25 times, its semifinished product is good stuff. Craft designs parameter to be: Cut when rough machining deeply 7mm, feed speed 0.

3mm/r, 500r/min; X of main shaft rotate speed to (on the diameter) finish machining surplus is 4 Mm, z is 2mm to finish machining surplus, feed speed is 0.

15mm/r, 800mm/min of main shaft rotate speed. Programming is as follows: N01 G50 X200.

0Z220.

0;N02 G00 X160.

0Z180.

0M03 S800;N03 G71 P04 Q10 U4.

0W2.

0D7.

0F0.

3S500;N04 G00 X40.

0S800;N05 G01 W-40.

0F0.

15;N06 X60.

0W-30.

0;N07 W-20.

0;N08 X100.

0W-10.

0;N09 W-20.

0;N10 X140.

0W-20.

0;N11 G70 P04 Q10;N12 G00 X200.

0Z220.

0;N13 M05;N14 M30;3.

Thread machining dictates automatically circularly (G32 of instruction of cutting of whorl of 1) one-way Cheng (G33, g34) statement form: G32   X (U) _ Z (W) function of _ F_ instruction: Cutting machines columnar whorl, conic whorl and planar whorl. The instruction explains: The X in the format (U) , Z (W) for whorl midpoint coordinate, f for what give out with whorl length L every turn feed rate. L shows whorl lead, to conic whorl (graph 26) , its bevel α is when 45 ° are the following, whorl lead is appointed with Z axis direction; Bevel angle α is when 90 ° of 45 ° ~ , appoint with X axis direction. When cutting of ① columnar whorl is machined, value of X, U can omit, the format is: G32 Z (W) _ F _ ; When cutting of whorl of ② end panel is machined, value of Z, W can omit, the format is: G32 X (U) _ F_ ; ③ whorl cutting should notice to install litre of enough fast feed in two end paragraph δ 1 and fall fast retreat a knife paragraph δ 2, it is namely when programming, should lathe tool cut, cut, return all should enroll in the program. Graph 26 whorl cutting pursues example of cutting of whorl of application of 27 whorl cutting: If the graph is shown 27 times, course taking a knife is A-B-C-D-A, cutting is conic whorl, whorl lead is 4mm, δ 1 = 3mm, δ 2 = 2mm, carry penetration of a cutting tool on the back to measure the Mm that it is 1 every time, cutting deepness is 2mm. Cutting of whorl of G00 X16G32 X44 W-45 F4G00 X50 W45 X14G32 X42 W-45 F4G00 X50 W45(2) dictates circularly (G92) statement form: G92   X (U) _ Z (W) function of instruction of _ R_ F_ : Cutting cylinder whorl and awl whorl, cutting tool from circular start, by the graph 28 with the graph 29 show cutter track line, return circular start finally, the dotted line in the graph expresses to move quickly by R, the feed rate that solid line assigns by F is floating. Graph whorl of 28 cutting cylinder pursues instruction of whorl of 29 cutting awl explains: ① X, Z states whorl terminus coordinate is worth; ② U, W to state whorl terminus is opposite the coordinate heft of circular start; ③ R shows awl thread only then dot and terminus are in the coordinate increment of X axis direction (radius is worth) , the R when columnar whorl cutting circulates is 0, can omit; ④ F shows whorl lead. Example: If the graph is shown 30 times, apply process designing of instruction of loop of columnar whorl cutting. Graph example of whorl of 30 cutting cylinder pursues G50 X100 Z50G97 S300 T0101 M03G00 X35 Z3G92 X29 of example of whorl of 31 cutting awl.

2Z-21 F1.

5X28.

6X28.

2X28.

Example of 04G00 X100 Z50 T0000 M05M02: If the graph is shown 31 times, apply process designing of instruction of loop of awl whorl cutting. G50 X100 Z50G97 S300 T0101 M03G00 X80 Z2G92 X49.

6Z-48 R-5 F2 X48.

7X48.

1X47.

5X47.

1  of X47G00 X100 Z50 T0000 M05M02 (3) whorl cutting is compound circulate (G76) statement form: Dmin Rd G76 X of Δ of G76 Pm R A Q (U) _ Z (W) function of instruction of D Ff of Δ of _Ri Pk Q: The craft sex that this whorl cutting circulates is more reasonable, process designing efficiency is taller, course of whorl cutting loop and feed method are shown 32 times like the graph. Graph compound loop course and feed law instruction show 32 whorl cutting: ① M states fine vehicle repeats a time, from 1, 99; ② R expresses inclined to the quantity that retreat a knife the unit is counted, or whorl tail end pours horny cost, in 0.

0f, 9.

Between 9f, with 0.

1f is one unit, (It is namely 0.

The integer of 1 times) , with 00, word of 99 two digit is appointed, (Among them F is whorl lead) ; ③ A expresses point of view of point of a knife; From 80 ° , 60 ° , 55 ° , 30 ° , 29 ° , 0 ° 6 angle choose; ④ Δ Dmin: Show depth of the smallest cutting, when computation deepness is less than Δ Dmin, take Δ Dmin to regard cutting as deepness; ⑤ D: Show finish machining surplus, appoint with radius process designing; Δ D: State first time is rough cut deep (radius is worth) ; ⑥ X, Z: State the coordinate of whorl terminus is worth; ⑦ U: State increment coordinate is worth; ⑧ W: State increment coordinate is worth; ⑨ I: The radius that shows awl thread is poor, be like I=0, it is straight whorl; ⑩ K: Show whorl height (X direction radius is worth) ; Graph of example of G76 screw cutting shows a paragraph of when go up for spare parts axis straight thread 33 times, whorl height is 3.

68, pitch is 6, whorl tail end pours wine cup for 1.

1L, horn of point of a knife is 60 ° , deepness of first time turning 1.

8, deepness of the smallest turning 0.

1, fine vehicle surplus 0.

2, frequency of turning of essence of life 1, before screw cutting first face of the cylinder outside turning of essence of life, program of its numerical control is as follows: Graph 33 whorl cutting circulates for many times N0 G50 X80 of number of program of O0028 / of example of G76 instruction process designing.

0Z130.

0; / installs workpiece origin to return N4 G96 S200 T0101 M08 M03; / of the 2nd reference point to appoint cutting speed to be 200m/min in N2 G30 U0 W0; / of left end panel, n6 G00 X68 of lathe tool of the circle outside tone.

0Z132.

0; / is fast starting point of turning of the circle outside going (68.

0, 132.

0) N7 G42 G01 Z130.

0F0.

2;N8 Z29.

0F0.

N9 G40 G00 U10 of turning of the circle outside 2; / .

0;N10 G30 U0 W0;N12 G97 S800 T0202 M08 M03; / cancels constant cutting speed, appoint 800r/min of main shaft rotate speed, move N14 G00 X80 of whorl lathe tool.

0Z130.

0; / walks along screw cutting to circulate quickly only then dot (80.

0, 130.

0) N16 G76 P011160 Q0.

1R0.

N18 G76 X60 of whorl of turning of 2; / loop.

64Z25.

0P3.

68Q1.

8F6.

0;N20 G30 U0 W0 M09;N22 M30; CNC Milling