Spur Engrenage formule / Spur Gear Formulas
Nombre de dents |
N |
Diametral Pitch |
DP |
Pressure Angle |
PA |
SW var |
Pour PA = 20 ou 25 |
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|
Outsite Diameter |
OD |
(N+2) / DP |
|
Pitch Diameter |
PD |
N / DP |
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Diameter of base circle (BD) |
baseDia |
Pd x cos(PA) en rad |
Poure PA = 14.5 |
Dedendum |
b |
1,25 / DP |
1.157 / DP |
Root Diametre |
RD |
PD – 2b |
|
Addendum |
a |
1/DP |
|
Chordal Tooth thickness tc |
CTT |
PD ; sin(90/N) en rad |
|
Tooth thickness |
t |
1,5708/DP |
|
Cordal Addendum |
PY |
A = t2/4PD |
|
Clearance PA(20) + PA(14.5) |
rFillet |
(0.25/DP) + (0.157/DP) |
|
DP = (N+2) / OD |
20-25 PA |
14,5 PA |
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Workimg depht |
hk |
2 / DP |
|
Whole depth |
ht |
2,1570 / DP |
2,25 / DP |
Base Pitch |
BP |
(Pd / 3,1416) x cos(PA) en rad |
|
Number of Teeth |
N |
(OD;DP) - 2 |
|
Clearance (c) |
c |
0.25/DP |
0.157/DP |
Autre SW var (SolidWorks) |
|
Face = Épaisseur flankCenter = 22,49999984 |
D3 = 360 hub1, hub 2 = 1 D1 = 1000 |
NumTeeh = Nombre de dents |
boreDia = Diamètre du trou au centre Bore |
|
Diametral Pitch |
Circular Pitch Inch |
Circular Pitch mm |
Metric Module |
M = 25,4 / DP |
M = C x 3,1416 |
M = C x 3,1416 / 25.4 |
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Metric Module |
Circular Pitch Inch |
Circular Pitch mm |
Diametral Pitch |
DP = 25,4 / M |
DP = 3,1416 / C |
DP = 3,1416 / (C / 25,4) |
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Metric Module |
Diametral Pitch |
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Circular Pitch Inch |
C = M / 8,08505 |
C = 3,1416/DP |
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Circular Pitch mm |
C = (M / 8,08505) ; 25.4 |
C = (3,1416/DP) ;25,4 |
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Mod = Module (mm) | DP = Diametral Pitch | C = Circular Pitch | ||||||||||||
Module | Diametral Pitch | Circular Pitch | ||||||||||||
Mod (mm) | DP | C Inch | C mm | DP | Mod (mm) | C Inch | C mm | C Inch | C mm | DP | Mod (mm) | |||
0,1 | 254,0000 | 0,0124 | 0,3142 | 0,5 | 50,8000 | 6,283 | 159,593 | 4 | 4 | 101,600 | 0,785 | 12,5664 | ||
0,15 | 169,3333 | 0,0186 | 0,4712 | 0,75 | 33,8667 | 4,189 | 106,396 | 3-1⁄2 | 3,5 | 88,900 | 0,898 | 28,2977 | ||
0,2 | 127,0000 | 0,0247 | 0,6283 | 1 | 25,4000 | 3,142 | 79,797 | 3 | 3 | 76,200 | 1,047 | 24,2552 | ||
0,25 | 101,6000 | 0,0309 | 0,7854 | 1,25 | 20,3200 | 2,513 | 63,837 | 2-3⁄4 | 2,75 | 69,850 | 1,142 | 22,2339 | ||
0,3 | 84,6667 | 0,0371 | 0,9425 | 1,5 | 16,9333 | 2,094 | 53,198 | 2-1⁄2 | 2,5 | 63,500 | 1,257 | 20,2126 | ||
0,35 | 72,5714 | 0,0433 | 1,0996 | 1,75 | 14,5143 | 1,795 | 45,598 | 2-1⁄4 | 2,25 | 57,150 | 1,396 | 18,1914 | ||
0,4 | 63,5000 | 0,0495 | 1,2566 | 2 | 12,7000 | 1,571 | 39,898 | 2 | 2 | 50,800 | 1,571 | 16,1701 | ||
0,45 | 56,4444 | 0,0557 | 1,4137 | 2,25 | 11,2889 | 1,396 | 35,465 | 1-7⁄8 | 1,875 | 47,625 | 1,676 | 15,1595 | ||
0,5 | 50,8000 | 0,0618 | 1,5708 | 2,5 | 10,1600 | 1,257 | 31,919 | 1-3⁄4 | 1,75 | 44,450 | 1,795 | 14,1488 | ||
0,55 | 46,1818 | 0,0680 | 1,7279 | 2,75 | 9,2364 | 1,142 | 29,017 | 1-5⁄8 | 1,625 | 41,275 | 1,933 | 13,1382 | ||
0,6 | 42,3333 | 0,0742 | 1,8850 | 3 | 8,4667 | 1,047 | 26,599 | 1-1⁄2 | 1,5 | 38,100 | 2,094 | 12,1276 | ||
0,65 | 39,0769 | 0,0804 | 2,0420 | 3,5 | 7,2571 | 0,898 | 22,799 | 1-7⁄16 | 1,4375 | 36,513 | 2,185 | 11,6223 | ||
0,7 | 36,2857 | 0,0866 | 2,1991 | 4 | 6,3500 | 0,785 | 19,949 | 1-3⁄8 | 1,375 | 34,925 | 2,285 | 11,1169 | ||
0,75 | 33,8667 | 0,0928 | 2,3562 | 4,5 | 5,6444 | 0,698 | 17,733 | 1-5⁄16 | 1,3125 | 33,338 | 2,394 | 10,6116 | ||
0,8 | 31,7500 | 0,0989 | 2,5133 | 5 | 5,0800 | 0,628 | 15,959 | 1-1⁄4 | 1,25 | 31,750 | 2,513 | 10,1063 | ||
0,9 | 28,2222 | 0,1113 | 2,8274 | 6 | 4,2333 | 0,524 | 13,299 | 1-3⁄16 | 1,1875 | 30,163 | 2,646 | 9,6010 | ||
1 | 25,4000 | 0,1237 | 3,1416 | 7 | 3,6286 | 0,449 | 11,400 | 1-1⁄8 | 1,125 | 28,575 | 2,793 | 9,0957 | ||
1,25 | 20,3200 | 0,1546 | 3,9270 | 8 | 3,1750 | 0,393 | 9,975 | 1-1⁄16 | 1,0625 | 26,988 | 2,957 | 8,5904 | ||
1,5 | 16,9333 | 0,1855 | 4,7124 | 9 | 2,8222 | 0,349 | 8,866 | 1 | 1 | 25,400 | 3,142 | 8,0851 | ||
1,75 | 14,5143 | 0,2164 | 5,4978 | 10 | 2,5400 | 0,314 | 7,980 | 15⁄16 | 0,9375 | 23,813 | 3,351 | 7,5797 | ||
2 | 12,7000 | 0,2474 | 6,2832 | 11 | 2,3091 | 0,286 | 7,254 | 7⁄8 | 0,875 | 22,225 | 3,590 | 7,0744 | ||
2,25 | 11,2889 | 0,2783 | 7,0686 | 12 | 2,1167 | 0,262 | 6,650 | 13⁄16 | 0,8125 | 20,638 | 3,867 | 6,5691 | ||
2,5 | 10,1600 | 0,3092 | 7,8540 | 13 | 1,9538 | 0,242 | 6,138 | 3⁄4 | 0,75 | 19,050 | 4,189 | 6,0638 | ||
2,75 | 9,2364 | 0,3401 | 8,6394 | 14 | 1,8143 | 0,224 | 5,700 | 11⁄16 | 0,6875 | 17,463 | 4,570 | 5,5585 | ||
3 | 8,4667 | 0,3711 | 9,4248 | 15 | 1,6933 | 0,209 | 5,320 | 2⁄3 | 0,6667 | 16,934 | 4,712 | 5,3903 | ||
3,25 | 7,8154 | 0,4020 | 10,2102 | 16 | 1,5875 | 0,196 | 4,987 | 5⁄8 | 0,625 | 15,875 | 5,027 | 5,0532 | ||
3,5 | 7,2571 | 0,4329 | 10,9956 | 17 | 1,4941 | 0,185 | 4,694 | 9⁄16 | 0,5625 | 14,288 | 5,585 | 4,5478 | ||
3,75 | 6,7733 | 0,4638 | 11,7810 | 18 | 1,4111 | 0,175 | 4,433 | 1⁄2 | 0,5 | 12,700 | 6,283 | 4,0425 | ||
4 | 6,3500 | 0,4947 | 12,5664 | 19 | 1,3368 | 0,165 | 4,200 | 7⁄16 | 0,4375 | 11,113 | 7,181 | 3,5372 | ||
4,5 | 5,6444 | 0,5566 | 14,1372 | 20 | 1,2700 | 0,157 | 3,990 | 2⁄5 | 0,4 | 10,160 | 7,854 | 3,2340 | ||
5 | 5,0800 | 0,6184 | 15,7080 | 22 | 1,1545 | 0,143 | 3,627 | 3⁄8 | 0,375 | 9,525 | 8,378 | 3,0319 | ||
5,5 | 4,6182 | 0,6803 | 17,2788 | 24 | 1,0583 | 0,131 | 3,325 | 1⁄3 | 0,3333 | 8,466 | 9,426 | 2,6947 | ||
6 | 4,2333 | 0,7421 | 18,8496 | 26 | 0,9769 | 0,121 | 3,069 | 5⁄16 | 0,3125 | 7,938 | 10,053 | 2,5266 | ||
7 | 3,6286 | 0,8658 | 21,9912 | 30 | 0,8467 | 0,105 | 2,660 | 1⁄4 | 0,25 | 6,350 | 12,566 | 2,0213 | ||
8 | 3,1750 | 0,9895 | 25,1328 | 32 | 0,7938 | 0,098 | 2,494 | 2⁄9 | 0,2222 | 5,644 | 14,139 | 1,7965 | ||
9 | 2,8222 | 1,1132 | 28,2744 | 34 | 0,7471 | 0,092 | 2,347 | 1⁄5 | 0,2 | 5,080 | 15,708 | 1,6170 | ||
10 | 2,5400 | 1,2369 | 31,4160 | 36 | 0,7056 | 0,087 | 2,217 | 3⁄16 | 0,1875 | 4,763 | 16,755 | 1,5159 | ||
11 | 2,3091 | 1,3605 | 34,5576 | 48 | 0,5292 | 0,065 | 1,662 | 1⁄6 | 0,1667 | 4,234 | 18,846 | 1,3478 | ||
12 | 2,1167 | 1,4842 | 37,6992 | 64 | 0,3969 | 0,049 | 1,247 | |||||||
14 | 1,8143 | 1,7316 | 43,9824 | 72 | 0,3528 | 0,044 | 1,108 | |||||||
15 | 1,6933 | 1,8553 | 47,1240 | 80 | 0,3175 | 0,039 | 0,997 | |||||||
16 | 1,5875 | 1,9790 | 50,2656 | 96 | 0,2646 | 0,033 | 0,831 | |||||||
18 | 1,4111 | 2,2263 | 56,5488 | 120 | 0,2117 | 0,026 | 0,665 | |||||||
20 | 1,2700 | 2,4737 | 62,8320 | 128 | 0,1984 | 0,025 | 0,623 | |||||||
22 | 1,1545 | 2,7211 | 69,1152 | 160 | 0,1588 | 0,020 | 0,499 | |||||||
25 | 1,0160 | 3,0921 | 78,5400 | |||||||||||
28 | 0,9071 | 3,4632 | 87,9648 | |||||||||||
32 | 0,7938 | 3,9579 | 100,5312 | |||||||||||
30 | 0,8467 | 3,7106 | 94,2480 | |||||||||||
33 | 0,7697 | 4,0816 | 103,6728 | |||||||||||
36 | 0,7056 | 4,4527 | 113,0976 | |||||||||||
39 | 0,6513 | 4,8237 | 122,5224 | |||||||||||
40 | 0,6350 | 4,9474 | 125,6640 | |||||||||||
42 | 0,6048 | 5,1948 | 131,9472 | |||||||||||
45 | 0,5644 | 5,5658 | 141,3720 | |||||||||||
50 | 0,5080 | 6,1843 | 157,0800 | |||||||||||
55 | 0,4618 | 6,8027 | 172,7880 | |||||||||||
60 | 0,4233 | 7,4211 | 188,4961 | |||||||||||
65 | 0,3908 | 8,0395 | 204,2041 | |||||||||||
70 | 0,3629 | 8,6580 | 219,9121 | |||||||||||
75 | 0,3387 | 9,2764 | 235,6201 |