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805783-2 PDF预览

805783-2

更新时间: 2024-10-28 23:27:27
品牌 Logo 应用领域
泰科 - TE 连接器连接器支架
页数 文件大小 规格书
8页 699K
描述
CRIMPER, INSULATION (.210" OV)

805783-2 技术参数

生命周期:ActiveReach Compliance Code:unknown
风险等级:5.62连接器支架类型:TOOL AND MACHINERY
Base Number Matches:1

805783-2 数据手册

 浏览型号805783-2的Datasheet PDF文件第1页浏览型号805783-2的Datasheet PDF文件第2页浏览型号805783-2的Datasheet PDF文件第4页浏览型号805783-2的Datasheet PDF文件第5页浏览型号805783-2的Datasheet PDF文件第6页浏览型号805783-2的Datasheet PDF文件第7页 
A typical design point for AI is 80%. In order to maintain  
the same AI, the crimp height, CH, needs to change in-  
versely to the change of crimp width, CW, in approxi-  
mately the same proportion. Thus, if the CW increases  
+2%, the CH needs to change approximately -2% in order  
to achieve the same AI design point. At first glance that  
may not seem significant, but in reality it can be very  
significant. Using another general industry design rule of  
the ratio of CH to CW of approximately 65%, a typical  
set of dimensions used as an example may be: CW = 0.110 in, CH = 0.068 in  
Cross Sections Showing Min-  
imum (a) and Maximum (b)  
Area Index perTerminal  
Specification—aVariation of  
3.5%  
(a)  
(b)  
Therefore, varying the CW by 2% would result in a CH variation of 2%, or 0.0014 in.  
At a CH tolerance of 0.002 in, 35% of the total CH tolerance would be used by a  
2% variation in CW. Thus, the importance of crimp width control is obvious when  
tooling is changed during a production run.  
Flash  
Most crimp terminations have a requirement to limit flash. Flash is defined as the material which protrudes to the  
sides of the terminal down and along the anvil. Flash is normal in the crimping process but excessive flash is very  
undesirable. Controlling flash requires a balance of several geometric factors. Other factors influencing flash are  
related to surface finish and friction, which will be discussed later in this paper.  
A dominant factor in controlling flash is controlling the clearance between the crimper and anvil during the crimp  
process. Defining the ideal clearance could in itself be a simple matter were it not for two facts:  
• In order to minimize terminals’ sticking in the crimper, the sides  
of the crimper are tapered. Thus the clearance between the  
anvil and crimper varies throughout the stroke.  
• Crimper and anvil sets are typically designed to terminate two  
to four wire sizes. This creates multiple crimp heights. Since the  
sides of the crimper are tapered to minimize terminal sticking,  
the maximum clearance permitted without creating flash must  
be assigned to the maximum crimp height specified for the  
tooling set. In addition, a minimal clearance must be maintained  
for the smallest crimp height specified by the tooling set to  
Crimper-to-Anvil Clearance = X +Y  
at the Final Crimp Height  
prohibit contact between the anvil and crimper.  
Crimper to anvil clearance is thus a combination of crimp width, crimper leg taper,  
anvil width, and crimp height. The critical design point is at the largest crimp  
height. This contribution to the gap is directly dependent on dimensional control.  
The following is offered as an example:  
Nominal condition: CH = 0.073 in, CW = 0.110 in  
Crimper leg taper = 3.0 degree  
Anvil Width = 0.109 in  
Nominal anvil to crimper total clearance = 0.005 in  
The clearance can grow rapidly with small changes to  
the nominal dimensions:  
(a)  
Significant flash can be generated  
with excessive anvil to crimper  
clearance, as shown by nominal  
design condition (a) and +0.003 in  
over nominal condition (b)  
CH remains unchanged = 0.073 in  
Increase in crimp width, CW, = 0.0008 in  
Increase in crimper leg taper = 0.8 degree  
Decrease in anvil width = 0.0008 in  
(b)  
The total increase in total clearance is this case =  
0.0026 in  
This more than a 50% increase in the nominal design  
clearance, which can result in unacceptable flash (see right).  
Dimensional control is clearly critical.  

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