螺纹精度等级与尺寸公差

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
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
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
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
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
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
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 ???
± 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
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
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 -
= (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
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
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)
g = - 22u 6級 0.75 bolt PD tolerance = 100u
5.513 – 0.022 = 5.491 5.491 – 0.100 = 5.391
g = - 22u 6.000 – 0.022 = 5.978 6級 0.75 bolt MD tolerance = 140u 5.978 – 0.140 = 5.837
螺紋有效徑計算
FASCON
Nut
Nut thread Basic Profile (Zero Line) 螺紋公差 Tolerance
Bolt
60o
Bolt thread
Basic thread profile - Metric
FASCON
M6 X 1.0 - 6H basic Pitch Diameter, Minor Diameter
Wind turbine/wind mill/wind power
FASCON
± 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
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
Working process
Sawing, Forging Shaping, Drilling, Broaching, Milling, Laser Electro-Chemical Turning, Grinding Electro-Polish, Honing Polishing Lapping Superfinishing
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@datastar.com.tw
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
H
60o
1/4 H
1/2 H
Bolt 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
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源自文库
7H Zero Line 基準線（零線）
-22 -38 -56
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