e = - 56u 6.000 – 0.056 = 5.944 6級 0.75 bolt MD tolerance = 140u 5.944 – 0.140 = 5.804
學會計算基本螺紋尺寸(II)
FASCON
Nut thread
5H
6H
7H Zero Line 基準線（零線）
-22 -38 -56
Limits in mm for nominal sizes in mm above above above above above above 3 6 30 120 400 1000 to to to to to to 6 30 120 400 1000 2000 ± 0,05 ± 0,1 ± 0,15 ± 0,2 ± 0,3 ± 0,5
± 4,0
± 0,8 ± 2,0 ± 4,0
± 6,0
DIN ISO 7168
FASCON
Roughness,Ra um 6.3 3.2 1.6 0.8 0.4 0.2 0.1 0.05 0.025
Grade Grade Number Mark N9 N8 N7 N6 N5 N4 N3 N2 N1
Basic Pitch Dia. = D - 2 X 3/8H = D - 3/4 X 0.866025P = D - 0.649519P = 6 - 0.649519 X 1.0 = 5.350 Basic Minor Dia. = D - 2 X 5/8H = D - 5/4 X 0.866025P = D - 1.083P = 6 - 1.083 X 1.0 = 4.917
M6 X 0.75 – 6e之 Pitch Diameter, Major Diameter
Basic Pitch Dia. = D - 2 X 3/8H = D - 3/4 X 0.866025P = D - 0.649519P = 6 - 0.649519 X 0.75 = 5.513
e = - 56u 5.513 – 0.056 = 5.457 6級 0.75 bolt PD tolerance = 100u 5.457 – 0.100 = 5.357
表面粗度 Surface roughness
FASCON
Wind turbine/windmill/wind power
FASCON
BONUS Energy A/S NEG Micon A/S Nordex A/S Vestas Wind Systems A/S LM Glasfiber A/S Infra-vest 英華威 ???
e 6e
f
g 4h
電鍍餘隙 Allowance
6g
M6 X 0.75
8g
Bolt thread
Thread tolerance position-Metric
FASCON
Material General requirements Thread Tolerance Standard Mechanical properties Limit deviations, geometrical tolerances
Sg (very rough)
± 0,05 ± 0,1 ± 0,15
-
± 0,05 ± 0,1 ± 0,2
± 0,5
± 0,1 ± 0,2 ± 0,5
± 1,0
± 0,15 ± 0,3 ± 0,8
± 1,5
± 0,2 ± 0,5 ± 1,2
± 2,0
± 0,3 ± 0,8 ± 2,0
± 3,0
± 0,5 ± 1,2 ± 3,0
學會計算基本螺紋尺寸(I)
FASCON
M6 X 0.75 - 6g 之 Pitch Diameter, Major Diameter
Basic Pitch Dia. = D - 2 X 3/8H = D - 3/4 X 0.866025P = D - 0.649519P = 6 - 0.649519 X 0.75 = 5.513
Screw threads and tolerances 扣件之螺紋精度等級與尺寸公差
(複習與演算)
By: Steven Fang 方君偉 sfang@
2003/08/11
FASCON
2/√3S A
30
三角形ABC面積
= ½(1 /√3S X S)
S 對邊 =1 /2√3 S2
above 2000 to 4000 -
m (medium)
c (coarse) v (very coarse) Tolerance Class (radius and chamfer) f (finne) m (medium) c (coarse) v (very coarse)
± 0,1
± 0,15 -
M6 X 1.0 - 6g 之 Pitch Diameter, Major Diameter
Basic Pitch Dia. = D - 2 X 3/8H = D - 3/4 X 0.866025P = D - 0.649519P = 6 - 0.649519 X 1.0 = 5.350 5.350 – 0.026 = 5.324 6級 1.0 bolt PD tolerance = 112u 5.324 – 0.112 = 5.212 g = - 26u 6.000 – 0.026 = 5.974 6級 1.0 bolt MD tolerance = 180u 5.974 – 0.180 = 5.794 g = - 26u
Wind turbine/wind mill/wind power
FASCON
Steel As specified in DIN 267 Part1 6g DIN 13 Parts 12 and 15
Property class 8.8,5.6,10.9 M39:subject to agreement (material) Standard Product grade ISO 898 Part 1 A for products up to size M24 and L 10d or 150mm B for products exceeding size M24 or L 10d or 150mm ISO 4759 Part 1
Working process
Sawing, Forging Shaping, Drilling, Broaching, Milling, Laser Electro-Chemical Turning, Grinding Electro-Polish, Honing Polishing Lapping Superfinishing
B 1/√3S
C S=1
先學會計算三角形面積
FASCON
三角形ABC面積 A
30
= ½(1 /√3S X S)
=1 /2√3 S2
六角形面積
B C = 1 /2√3 S2 X 3
= √3/2 S2 = 0.866025 S2
計算六角形面積公式
FASCON
Nut thread
螺距 p
3/8H
{
1/8 H
DIN ISO 2768-1
FASCON
Tolerance Class
0.5 to 3
Over 3 To 6
Over 6 To 30
Over 30 To 120
Over 120 To 400
Over 400 To 1000
Over 1000 To 2000
Over 2000 To 4000
F (fine) M (means) G (roughly)
H
60o
1/4 H
1/2 H
Boห้องสมุดไป่ตู้t thread
H = 0.866025 P
螺陽 絲螺 紋 外 有 大 徑 陰 螺 效 徑 螺 帽 徑 Major Dia. 紋 孔 Pitch Dia. 徑小 徑 Minor Dia.
( )
( )
Pitch Dia. = D - 2 X 3/8H = D - 3/4 X 0.866025P = D - 0.649519P
± 0,1
± 0,2 ± 0,5
± 0,2
± 0,5 ± 1
± 0,3
± 0,8 ± 1,5
± 0,5
± 1,2 ± 2,5
± 0,8
± 2 ± 4
± 1,2
± 3 ± 6
± 2
± 4 ± 8
Limits in mm for nominal sizes in mm above above 0,5 3 6 to to 3 6 ± 0,2 ± 0,4 ± 0,5 ± 1 ± 1 ± 2
= (六角面積 - 圓面積) X 厚度 X 7.85g/1,000
圓面積 = π/4 X Pitch Dia.2
Hexagon nuts weight calculation
FASCON
ToleranceClass (Line measurement) f (fine)
0,5 to 3 ± 0,05
Standard
Technical data
FASCON
Fasteners tolerances ISO4759
FASCON
ISO tolerances
FASCON
Example: Size M6 X 25
h13
+2P
js14
js15
h13
h14
Tolerances
FASCON
m 厚 度
六角螺帽重量 g/pc
g = - 22u 6級 0.75 bolt PD tolerance = 100u