JBZQ 4308-2006 大侧间隙梯形螺纹.pdf

JB/ZQ4308-2006
大侧间隙梯形螺纹
代替∫BZQ4308-1997
本标准主要用于热轧宽材轧机的精轧机的压下螺杆和螺母。
最大实体牙型如图1和表1所示。
内螺纹
卧致板属
??
Smn=0. 4
D.6
外纹加工公差
1R2
0.
内螺纹加工
公差0
,4
纹
公称直径
0.5P+
e外螺纹中径的基本偏差;
a。一牙间;
d=d-5;
h3=H1+a=0.5P+e
D=D-2h13
0.5P
Da=d+2a
1外中係基本偏拦不为的最大实体牙型
1大体牙型尺す
R
R
P
2
20
212
224
0.5
26
242
29
250
2标记示例
公称直径以=500mm,螺距P=24m的大侧间隙梯形螺纹:
Tr5×24JB/ZQ4.308-2006
3螺纹的极限尺寸见表2
JB/Q4308-2006
聚2
外螺纹
内螺较
总的轴向
公称暗大径
小径
轴向样
不径次径轴向梯
间隙
直
d(h9)
板甸府
板间默
Llnl
run m2ix
min
MAXX
min minimax max min
n
400201399.788399.648137.788?376.723
80.01380.89402.0
410?1201409.7881409.6387.7881385.73
390.01390.0891412.0
420201419.7881419.6331397.78839%6.7
40.04009422.0
430201429,7881429,633407.788
10.01410.097?432.0
40,221439.77549.621415.77614L4.66
418.01418.097144.0
450221419.776449.5211425.776424.66
428.01428.097452.0
460221459.7761459.621,435.776434.66
438,01438.09?462.0
47?221459.7761469.6211445.7644.66
448.0448.09?472.0
401241479.764479.609453.74452.610
456.0456.0971482.0
490241489.764489.609?463.7641462.610
460466.0y71492.0
500241499.764499.60)1473,764472-61?0.4010.590?476.01476.097502.?0b.10,6000.40
510241509.741509.5891483.3764482.562
486.01486.097512.0
520261519.7581519,5831491.7581490.518
494,01494.097?522.0
5301261529.7581529.583501.75381500518
504.01504.110?532.0
5401261539.758539.583511.758510.518
S14.01514.110?542.0
550261549.7581549.5831521.758520.518
524.01524.11?152.0
560?281559,7501559.5751529.750528.472
532.01532.110562
570281569.7501569.575539.750?53,472
542,01542.1101572,0
580」281s79.750579.575549.7501548.47
552.01552.110?582.0
590281589.750589.575159.750?558.472
562.01562.110592.0
600281599.7501599,5751569.7501568.472
72.0572,110602,0
注:1压下螺杆推材料为55优质碳钢,压下螺母推荐材料为Zn25Al6Fe3Mn3
2加工纹时,起機和末应车半个距a