????? ?????? CNC ????????? ???? ?????????-Shenzhen Aima Technology Co., Ltd

① Introduction to G32 machining end face threads:

????? ???: ???????? ????? ??????? ????? ???????? ?????? ?????? ? ??????? ?? ??? ???? ?????? (?????? ????) ?? ??? ?????? ??????? ??????. ??? ??? ??????? ??????? ?? ??? ?????? ??????? ?? ??????? ???.

????? ?-? ?? ?????? ??????? ?? ?????? ??? ???? ???

????? ?????? CNC ????????? ???? ?????????(pic1)

Figure (a) is a schematic diagram of the overall structure of the end face thread, while Figure (b) is a partial enlarged view of the end face thread. It is specified that when the thread depth is less than 5mm, an additional 0.1mm needs to be added.

????? ??? ???? ?? ????:

In the case of the main spindle turning forward, turning from the outside to the inside belongs to right-handed (clockwise), and vice versa is left-handed thread (counterclockwise).

???? ?????: G32 X-F_ (X koordinate of the cut end point, F is the lead of the thread)

????? ??????

G99 M3 S500 T0202; (??? ????????? ??? B=3?)

G0 X100 M8;

Z-0.5;

G32 X40 F3.0;

G0 Z3;

X100;

Z-0.7;

G32 X40 (?? ???? ?? ?????? ???????? ??? 2-9) F3.0;

G0 Z3;

X100;

Z-1.0;

G32 X40 F3.0;

G0 Z3;

X100;

Z-1.5;

G32 X40 F3.0;

G0 Z3;

X100;

Z-2.0;

G32 X40 F3.0;

G0 Z3;

X100;

Z-2.5;

G32 X40 F3.0;

G0 Z3;

X100;

Z-3.1;

G32 X40 F3.0;

G0 Z90;

M30

????? ?????? CNC ????????? ???? ?????????(pic2)

???????: ?????? ???? ??? ???? ????? ????.

????? ?? ?????? ????? ?????

???? ????????? CNC ????? ????? Guangzhou CNC (GSK) ?? ??????? G32 ??????? ??????? ?? ????? ?? ??????? ????? ????? ???????. ??????? ?? ?? ????? ?-?? ???? ???? ??????:

????? ?????? CNC ????????? ???? ?????????(pic3)

????? ?- ?? ?????? ??????? ?? ??????? ?????

Numerical calculation:

?????? ????? (????? ?????) M274 ?.??=?.?? ???.

????? ????? (????? ?????) M2712 ?.??=??.?? ???.

????? ????? ?? ???? ????? ????? ????? ???:

?? ????? ???? 27-5.2=21.8mm.

?????? ?? ????? ???? ???? ???? ?????? ???? ???? ?? ???????? ???? ???? (P=12) ????? ??????.

Program statement (only threaded section)

G99 M3 S200 T0202;

G0 X30;

X26;

G32 Z-20 F4.0;

G32 Z-56 F12

G0 X30;

X25.6;

G32 Z-20 F4.0;

G32 Z- 56 F12;

G32 X30

X21.8;

G32 Z-20 F4

G32 Z- 56 F12;

G0 X30;

Z90

M30

???? ????? ????? ?????? ?????? ?? ???? ????? ????? ????? ????? ????? ????? ?????? F ?? ?? ??? ??????? ???? ??????? ? ??? ????? ????? ????? ?????

In some imported CNC systems such as FANUC, there is a specific instruction G34 for machining variable pitch threads.

???? ?????: G34 X_Z_F_K_;

??? ????? X ? Z ?????? ????? ??????? ?? ??????? ?????? F ??????? ?? ???? ???? ?????? ?? ???? ???? ???? K ?????? ? ???? ??????? ?? ??????? ???? ???? ???? ???? ???? ? ??? ????? K 0.0001-500.000mm ???? ??????? ?? ?? ????? ???? ???? ???? ??

????? ?????? CNC ????????? ???? ?????????(pic4)

???? ????? ????? ???? ? ??? ???? ?????? ????? ? ??? ???? ??? ????? ????? ???? ? ?????? G34 Z-?? ???. F5. K1.

???? 9314;????? ???? ???????? ?????? ?? ???????

???????? ????? ???? ?????? ???? ?????? ??????? ??????? ? ???????? ?????? ????????. ????? CNC ?? ???????? ????? ???? ???????? ?? ??????? ?? G92 ???? ????? ???????? ????? ????? ???. ???????? ????? ???? ??? ?????? ??????????? G32 ???? ????? ???????? ????? ???? ?? ????? ??????? ? ??

G92 ?? ??? ???????? ???? ??????? ?? ?????????? ????? ??????? ?? ?????? ???? ??????? ?? ?? ????? ?-?? ???? ???? ??????.

????? ?????? CNC ????????? ???? ?????????(pic5)

???? ?? ????? ???? ???? ???: M279/3

??? ????? M27 ?? ????? ?????? ???? ? ???? ???? ??? ? ? ???? ???? ???.

?????: ????=????? ???? ???? ????????: ??? ?? ??? ??? ???.

Numerical calculation:

Major diameter=27-0.133=26.61mm;

??? ?????=??-?.??=??.??;

Program statement (only threaded section)

??? ?????? (O0046)

G92 X26 Z- 40 F9

X25.7;

X25.4;

X25.2;

X25.0;

X23.1;

M99

?????? ????

G99 M3 S700 T0202;

G0 X30 M8;

M98 P0046;

G0 X30;

Z6;

M98 P0046;

G0 X30;

Z9;

M98 P0046;

G0 Z90;

M30

Z3. Z6. Z9. ?????? ?? ???? ?? ?????? (P=3)

???? ???????? ?????? ?????????? G32 ?? ???????? ??????? ????? ???????? ???????

???? ?????: G32 X_Z_F_Q_;

???? ?? X ? Z ?????? ???????????? ?????? ?????? ??????? ?????? F ?????? ?????? ???? ???? ? Q ?????? ???? ?????? ???? ???. ?????? 0.001 ???? ???? ?????? ????????? ???? ???. ??? ?????? ?????? ??????? ? ????? ????? ?? 180 ????? Q180000 ?? ???? ????

????? ???? Q ?? ???? modal ???? ? ???? ?? ??? ???? ???? ?? ??? ??? ???? ????? ?? ?? 0 ?????????

????????? ??????? ????? ???? ??????? G32? G34? G92 ? G76 ???? ???.

???? 9315;????? ???????? trapezoidal

?? ????? CNC? ??????? ??? ??????? G76 ???????? ?? ??????? ?? ???????? ??? ???? ? ??????? ??????? ???? ??? ?????? ?????? ????? ???? ????. ????????? ?? ???? ????? ???? ??????? ?????? ??????? ???? ???????? ??????????? ?? ??????? ?? ???????? ????????? ??????? ????? ??? ???. ?? ??????? ?? ??????????? ??? ???? ??????? G32 ? ???? ????? ??????? ? ??????????? ?????????????????????????????????????????????

(?) ?????? ?? ???? ?? ???????? ???? ???? ?? ????? ???? ?? ??????? ??????? ?? ????? ????? ???? ?? ??????? ??? ????? ???? ? ?????? ?????? ?????? ?????? ?????? ?????? ?????? ???

(2) ??? ???? ?? ????? ??? ???????? ?? ??? ?????? ???? ?? ?????? ???? ???? ?????? ?? ?? ???????? ?? ????? ????? ????? ???? ???????? ?????? ??????? ????. ????? ?????? ?? ???? ????? ????????? ?? ??? ?.? ??? ?? ????? ??? ??? ? ????? ???? ??????? ?? ?.?-?.?mm ????? ????. ????? ??? ????? ???????? ????? ??? ????? ??? ? ???? ????? ????? ???? ????? ? ?? ?? ??? ?????? ?? ??????? ?? ?? ??? ????? ? ?? ??????? ??????. ?? ??? ????? ???? ????? ?? ????? ???? ???? ??????? ?? ??? ????? ???? ?? ?? ????? ?? ????? ???? ??? ??? ? ????? ?? ???? ??? ????? ???? ????? ? ???? ?? ??? ???? ????? ??? ????.

(3) Pay attention to the positioning of the turning tool before turning the thread. The distance from the tool tip to the tooth top should be greater than the tooth height h. If it is less than the tooth height h, it will cause friction between the tool tip and the thread tooth top during the post threading stage, resulting in waste.

(?) ??? ???????? ?? ????? ???? ? ???? ?????? ?? ????????? ?? ?? ??? ????? ?? ??? ??? ????? ??????? ????.

?. ???? ???????? ???????????

(?) ????? ?????? X ????? ????=diameter ??????+(0.5P+ac) 2+1? ???? ?? P ?? ???? ac ????? ????? ????? ??? ? 0.5P+ac ????? ????? ???. ???????? ???? ????????? ????? ????? ?? ???? ???????? ????? ??????? ?? ?? ??? ??? ???? ???? ??????.

????? ?????? CNC ????????? ???? ?????????(pic6)

(?) ???? ????? ???? ????? X? X=????? ?????? - ????? ?????? ????? ???? ? ????? -0.2

(?) diameter ????=diameter nominal - (0. 5P+ac) 2

(?) ?????? ????? = (???? X ?? ?????? ????? ????? - ????? ????)/????? ???? ???? X (???? ?????)+?

(?) ???? U=X ?? ???? ?????? ???? - ???? X ?? ???? ??? ?????.

2. ???? ??? ????: ??????? ??? ??? ???? ?? ? ???? ???? ?????? ????????? ??????? ??????? ? ????? ?? ?? ??????? ???? ????? ????????? ?? ???? ??? ????? ???? ??? ??? ? ???? ???? ??? ????. ????? ?? ?? ???????? ???? ?????? ????????? ?? ???? ???????? ????? ????? ???? ??? ????????? ???? ??? ???? ? ???? ????. ?? ??????? ?? ??? ????? ?? ? ????? ???? ?? ??? ?? ??? ??? ??? ??????? ????? ????? ?? ???? ????? ???? ?????? ? ?? ????? ?? ??? ???? ?????? ??? ?? ????? ?? ????? ?? ??? ??? ? ??? ????? ????? ?? ????? ??????. ???? ?? ??? ??? ??? ??????? ????? ????? ?? ???? ???? ???? ?????? ? ?? ????? ?? ??? ???? ?????? ??? ?? ????? ?? ?????

????? ?????? CNC ????????? ???? ?????????(pic7)

??????? ?? ?? ????? ??? ???? ???? ??????? ?? ???? ????? ????????? ???.

????? ?????? CNC ????????? ???? ?????????(pic8)

?. ?????? ??????? ???? ?????? ?????????

(?) ????? ?????? ??? X

(0. 5P+ac) 2+1=36+(0. 56+0. 5) 2+1=44

(?) ??? ?? ????? ???? ?? ????? ??????? ???? ? ????? ?? ????? ?????? ????? ????: ??????? ???? 0 ???? ??????? ????? -0.375 ???? ? ????? ????? -0.2 ???. ????? X ???? ????? ??? 36-0.2-0.2=35.6 ???.

(?) diameter ????=diameter nominal - (0.5P+ac) 2=36 - (0.56+0.5) 2=29.

(?) ?????? ????? = (????? X- ????? ????? ???? ????? - diameter ????)/????? ????? ??? X (????? diameter)+1=(35.9- 29)/0.1+1=67

(?) U=????? ?????? ??? X - ????? ????? ????? ???? X=44-35.6=8.4

4. ?????? ????????? ?? ?????? ???? ? ??? ?? ?? ???? ?? ????? ?? ????? ???

Major diameter D=36

According to the table, the tolerance of d is determined as d-0.5p=36-3=33, so d=33

?????? ????? h=0.5p+ac=3.5

Minor diameter d=d, medium -2h=29

Crown width f=0.336p=2.196

Tooth base width w=0.366p 0.536a=2.196-0.268=1.928

?? ???? ?????? ???? ??????? ?? ????????? ?? ??? ????? ????? f=1.5mm ???.

?? ??????? ?? ?? ??? ??????????? ?.?? ???? ?????? ????? ???? ?????? ?????? M=d+?.864d-?.866p=36.88? ? ???? (0-?.355) ?? ???? ????? ???? ????? ??? ????? ??????? ?? ????? M=36.525-36.88

?. ?????????? CNC ?????

G99 M3 S300 T0101;

G0 X44 Z8; (?? ???? X ?? ???? ?????? ???? ???)

M8;

M98 P470002; (47 is the number of rough machining tools)

M98 P200003; (20 is the number of precision machining tools)

G0 X100 Z100;

M30

?????? ??? ?????

O0002

G0 U-8.4; (8.4 ???? U ???)

G32 Z- 37 F6

G0 U8.4;

Z7.7;

U-8.4;

G32 Z- 37 F6

G0 U8.4;

Z8.3;

U-8.4;

G32 U0 Z- 37 F6

G0 U8.3;

Z8;

M99

????? ?????????? ????? ????

O0003;

G0 U-8.4;

G32 Z- 37 F6

G0 U8.4;

Z7.9;

U-8.4;

G32 U0 Z- 37 F6

G0 U8.4;

Z8.1;

U-8.4;

G32 U0 Z- 37 F6

G0 U8.3;

Z8;

M99

??? ???? ???? ?? ?? ???? mentioned above can also be programmed using G92 subroutines.

?????? ????

???

G00 X44 Z6; (??? ???? ????? ???? ?? ????? ?????) Φ ???? ????? 44mm ????? 3mm)

M98 P60002; (????? ????? 6 ??? ?? O0002 ??? ?????)

M98 P80003; (??? ????? ??? ??? ?????? ???? ??? ??? ??? ? ???)

M98 P80004; (????? ???? ???? ?? ?????? ???? O0004 ?? 8 ??? ??? ??????)

M98 P80005; (????? ???? 8 ??? ?? O0005 ???? ??????)

G0 X100 Z100; (??????? ??? ???? ?? ???? ???? ?????? ?????????)

???

??0002 (????? ???)

G00 U-0.5; (Rough turning with each feed depth)

M98 P0006; (?? ??? ??? ????? O0006)