Radius of G41CNC Milling cutting tool makes good omissions instruction: G40, g41, g42 detailed is solved

Radius of cutting tool of G41 CNC Milling makes good omissions instruction: G40, g41, g42 detailed sees instruction pattern: The program that place citing writes before this section all is point of a knife to nod with center of cutting tool end panel, with milling of outline of workpiece of this bit of edge. But actual condition, milling cutter has certain diameter, reason with this means the result of actual milling, over all dimension can reduce cost of diameter of one milling cutter; Shape size can raise cost of diameter of one milling cutter inside, if pursue,1 is shown. If,be informed by above milling of outline of workpiece of cutting tool edge, because the knife has certain diameter, the result of reason milling can increase or reduce cost of diameter of one cutting tool. Be like to in an attempt to 2 (B) the dot of point of a knife of milling cutter slants upcountry half diameter value, if dotted line place is shown, criterion but mill gives true measure, but write a law so, all should add every time, decrease half diameter to be worth ability to find genuine cutting tool center to change a way, at compose program very no-go. The reason convenience for compose program quality, best the dimension that can go up with work plan makes good omissions for program method recycle instruction, command cutting tool right or towards the left makes good omissions value of radius of one cutting tool, if pursue 3, 4 are shown. The coordinate that all need not want center of computational milling cutter every time so is worth. Cutting tool radius makes good omissions instruction: G40: Cancel knife diameter to make good omissions (Cutter Compensation Cancel) . G41: Knife diameter Zun Xiangbu (Cutter Compensation Left) . G42: Knife way is right to make good omissions (Cutter Compensation Right) . Knife diameter makes good omissions the judgement of left, right way defines under the basis: Stand on program method, to milling ongoing way looks, the person that milling cutter should make good omissions right (show 3 times like the graph) , dictate with G42; Conversely, milling cutter should the person that towards the left makes good omissions (show 4 times like the graph) , dictate with G41. Knife diameter makes good omissions statement form: α , β : Choose to plane cooperates in axis of X, Y, Z3 (G17, G18, G19) hold the post of 2 axes. D: For knife diameter filling positive sign is piled up, express with 2 digit word. Filling positive sign piles up the knife diameter that this number points to code of cutting tool filling positive sign is medium namely. For example D11, state code of knife diameter filling positive sign is 11, 11 data is 4.

0, state milling cutter radius is 4.

0mm. When executive G41 or G42 dictate, the knife path that controller can specify to D place picks inside code of filling positive sign take cutting tool radius to be worth, with as make good omissions the basis of the value. Following item should notice when use knife diameter makes good omissions: 1.

Cannot use together with G02, G03, can use together with G00 or G01 only, and cutting tool must want shift (start knife diameter to make good omissions namely instruction, must advanced one sheet section is started) . If pursue 3 reach a figure 4 specifications. By A the dot nods shift to C and start knife way right to make good omissions the program of the instruction is as follows: : G90 G00 X110.

Y -20.

; ＝ ＞ fast fixed position nods G01 G42 X92 to A.

Y0 D11 F80; ＝ ＞ A→CY52.

; ＝ ＞ C→DG03 X84.

Y60.

R8.

; ＝ ＞ D→EG01 X0; ＝ ＞ E→FY0; ＝ ＞ F→GX92.

; ＝ ＞ G→C: By B the dot nods shift to F and start knife way right to make good omissions the program of the instruction is as follows: : G90 G00 X -20.

Y80.

; ＝ ＞ fast fixed position is nodded to B. G01 G42 X0 Y60.

D11 F80; ＝ ＞ B→FY0; ＝ ＞ F→GX92.

; ＝ ＞ G→CY52.

; ＝ ＞ C→DG03 X84.

Y60.

R8.

; ＝ ＞ D→EG01 X0; ＝ ＞ E→F: G42 is right to make good omissions, it is milling namely when, milling cutter is in of program method on the right side of, to workpiece it goes against generation mill effect, reason is commonly used at thick milling. The program that by A the dot nods shift to C and starts knife diameter Zun Xiangbu to dictating is as follows: : G90 G00 X110.

Y -20.

; ＝ ＞ fast fixed position nods G01 G41 X92 to A.

Y0 D11 F80; ＝ ＞ A→C 　 X0; ＝ ＞ C→G 　 Y60.

; ＝ ＞ G→F 　 X84.

; ＝ ＞ F→E 　 G02 X92.

Y52.

R8.

; G01 Y0 of 　 of ＝ ＞ E →D; 　 of ＝ ＞ D →C: The program that by B the dot nods shift to F and starts knife diameter Zun Xiangbu to dictating is as follows: G90 G00 X -20.

Y80.

; ＝ ＞ fast fixed position nods G01 G41 X0 Y60 to B.

D11 F80; ＝ ＞ B→F 　 X84.

; ＝ ＞ F→E 　 G02 X92.

Y52.

R8.

; ＝ ＞ E→D 　 G01 Y0; ＝ ＞ D→C 　 X0.

; ＝ ＞ C→G 　 Y60.

; ＝ ＞ G→F 　 : G41 is left to make good omissions, it is milling namely when, milling cutter is in of program method left. To workpiece it arranges generation mill effect, reason is commonly used at milling of essence of life. 2.

When the program is made, knife diameter filling positive sign gives the code only in the program, like D11, D12… filling positive sign piles up each knife diameter to all make good omissions on behalf of value, this makes good omissions the value can be the diameter of milling cutter by parameter set or radius is worth (use on, general all set is worth into the radius of milling cutter) , and value of radius of this milling cutter is to add man-hour, the cutting tool that keys in control system by handlers beforehand makes good omissions of number picture answer relatively inside number. 3.

Make good omissions when the sign of the value is changed, the filling square of G41 and G42 to meeting change. When if G41 instruction gives,be worth, its make good omissions towards the left; When if give,losing a value, its make good omissions meeting right. The G42 that be the same as manage gives when be worth, its make good omissions right; When if give,losing a value, its make good omissions meeting towards the left. This shows, should make good omissions when value symbol is changed, the function of G41 and G42 just crossing-over. Reason is keyed in commonly fill to be worth (namely milling cutter radius is worth) all use be worth more reasonable. 4.

Make good omissions when knife diameter function (belong to continuously valid function) in make good omissions in condition, if join G28, g29, g92 instruction, when these instructions are carried out, make good omissions condition will be cancelled temporarily, but control system still is remembering this to make good omissions condition, because this issues one sheet at carrying out when the section, restore automatically to make good omissions again condition. 5.

Make good omissions when executive knife diameter, at machining the beard after finishing to will make good omissions with G40 condition gives cancel, make the center of milling cutter replies to go up to real coordinate point. When i.e. carries out G40 to dictate, the system can make good omissions towards the left or rightward value, release toward opposite way, reason milling cutter will be mobile value of radius of one milling cutter. Use the opportunity of G40 so, had better be milling cutter already was far from workpiece. If pursue the form exemple of 5 1. 6.

Make good omissions vector: Graph 5 medium "→" are called make good omissions vector, this vector makes good omissions at starting need when the instruction as perpendicular as method of below one program. Later the node that points to method of center of the milling cutter after making good omissions possibly by the node of program method. Referenced graph 5 in "→" place is shown. Exemple 1.

φ10 is used to carry milling cutter milling in this exemple, after reason is machined, can be in the roundlet arc that produces R5mm at dot of D, E, F, G, J. : G90 G00 X -20.

Y -20.

; ＝ ＞ fast fixed position nods 　 G01 G41 X0 Y0 D12 F80 to A; ＝ ＞ A→B starts Zun Xiangbu Y35 of G41 　 　 .

; ＝ ＞ B→X20 of C 　 　 .

; ＝ ＞ C→G03 X25 of D 　 　 .

Y60.

R65.

; ＝ ＞ D→G02 X65 of E 　 　 .

R -25.

; ＝ ＞ E→G03 X70 of F 　 　 .

Y35.

R65.

; ＝ ＞ F→G01 X90 of G 　 　 .

; ＝ ＞ G→Y0 of H 　 　 .

; ＝ ＞ H→X45 of I 　 　 .

Y10.

; ＝ ＞ I→X0 Y0 of J 　 　 ; ＝ ＞ J→X -20 of B 　 　 .

Y -20.

; ＝ ＞ B→G40 of A 　 　 ; ＝ ＞ milling cutter is far from disappear of the reassume after labour is accompanied to make good omissions. : 7.

In make good omissions below condition, the radius of the linear and mobile quantity of milling cutter and cutting of inside circular arc is worth radius of milling cutter wanting ≧, make good omissions otherwise vector generates interference, can excessive cutting happens, reason controller command stops to carry out, and indication caution number. If pursue 6, 7, 8 are shown. CNC Milling