CN104732005B - A kind of terminal pulling-out force detection method - Google Patents
A kind of terminal pulling-out force detection method Download PDFInfo
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- CN104732005B CN104732005B CN201410826489.8A CN201410826489A CN104732005B CN 104732005 B CN104732005 B CN 104732005B CN 201410826489 A CN201410826489 A CN 201410826489A CN 104732005 B CN104732005 B CN 104732005B
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Abstract
The invention provides a kind of terminal pulling-out force detection method, concrete condition of the methods described first against terminal and wire, relation between terminal pulling-out force and crimp height is found using regression analysis, then the span of crimp height is determined according to the specific requirement of terminal pulling-out force, finally by the monitoring to terminal crimp height, the control to terminal pulling-out force is realized.The present invention determines optimal crimp height value according to the relation between terminal pulling-out force and crimp height, the control to pulling-out force is realized by the monitoring to terminal crimp height, detection mode is set to be changed to nondestructive testing from destructive testing, and by it is first, in, last part check system be changed to first, last part check system, examine the frequency and inspection cost so as to reduce.
Description
Technical field
The present invention relates to wire interconnection technique field, more particularly to a kind of detection method of automotive wire bundle terminal pulling-out force.
Background technology
Terminal is the important component of automotive wire bundle, and it is connected between wire and wire, wire and electrical appliance, played
Transmit the effect of electric current, signal.It is general between terminal and wire to be connected using crimping mode.The quality of crimp quality, direct shadow
The reliability of connection is rung, and pulling-out force is then an important parameter for weighing crimp quality.At present, wire harness manufacturing enterprise is general
Using it is first, in, last part check system is monitored to terminal pulling-out force.This check system need to gather great amount of samples and be drawn
De- power test, not only workload is big, and it is destructive testing directly to detect pulling-out force, substantially increases testing cost.
The content of the invention
In view of this, the present invention is directed to propose a kind of terminal pulling-out force detection method, to reduce the detection work of pulling-out force
Amount, reduce testing cost.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of terminal pulling-out force detection method, methods described first against terminal and wire concrete condition, using recurrence
Analysis method finds the relation between terminal pulling-out force and crimp height, then determines to press according to the specific requirement of terminal pulling-out force
The span of height is connect, finally by the monitoring to terminal crimp height, realizes the control to terminal pulling-out force.
Further, it is described that the specific of the relation between terminal pulling-out force and crimp height is found using regression analysis
Step is as follows：
A. Data Collection
The wire and terminal of different batches are selected, debugs mould, on the premise of pulling-out force meets to require, continuously crimps 2N
Individual terminal, after measuring and recording crimp height value, N number of terminal is taken to carry out tensile test, record pulls force value, measures and records another
The voltage drop of outer N number of terminal and section；
Change crimp height value according to the interval of setting, repeat above-mentioned test M time, record test result；
B. pulling-out force Y and crimp height X functional relation is determined
The scatter diagram of pulling-out force and crimp height is drawn according to test data, matched curve is drawn according to scatter diagram, obtained
Pulling-out force Y and crimp height X functional relation；
C. the span of crimp height is calculated
The span of given pulling-out force, crimp height is calculated according to pulling-out force Y and crimp height X functional relation
Span；
D. the detection of terminal pulling-out force
The crimp height of terminal is detected, if crimp height judges terminal in the span calculated
For pulling-out force in given span, pulling-out force is qualified, otherwise judges that pulling-out force is unqualified.
Further, in order to ensure the crimp quality of terminal, calculated according to pulling-out force Y and crimp height X functional relation
After going out the span of terminal compression joint height, should also according to voltage drop and terminal section to the restrictive condition of crimp height to crimping
The span of height is modified, and specific method is：
Mark the crimping corresponding to qualified terminal pulling-out force, terminal voltage drop and terminal section respectively on same figure
Height section, the common portion in three sections is then found out, obtain the optimum valuing range of revised terminal compression joint height.
Further, the terminal compression joint is highly the height of core pressure contact portion.
Further, the detection in production process to terminal crimp height uses first, last part check system.
Further, the matched curve drawn according to scatter diagram is quadratic function curve.
Further, in data-gathering process, repeat M times test when crimp height value setting at intervals of
0.08mm。
Relative to prior art, terminal pulling-out force detection method of the present invention has the advantage that：
The present invention determines optimal crimp height value according to the relation between terminal pulling-out force and crimp height, by terminal
The control to pulling-out force is realized in the monitoring of crimp height, detection mode is changed to nondestructive testing from destructive testing, and will
It is first, in, last part check system be changed to first, last part check system, examine the frequency and inspection cost so as to reduce.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the state before terminal compression joint.
Fig. 2 is the state after terminal compression joint.
Fig. 3 is A-A profiles.
Fig. 4 is the flow chart of analyzing influence terminal pulling-out force factor.
Fig. 5 is terminal compression joint quality C＆E matrixes.
Fig. 6 is U open height normal distribution histograms.
Fig. 7 is U mouth width normal distribution histograms.
Fig. 8 is pulling-out force main effect figure.
Fig. 9 is pulling-out force interaction diagram.
Figure 10 is crimp height value interaction diagram.
Figure 11 is the Pareto diagram of pulling-out force.
Figure 12 is the Pareto diagram of crimp height.
Figure 13 is pulling-out force and the scatter diagram of crimp height value.
Description of reference numerals：
1st, terminal head portion, 2, core pressure contact portion, 3, core, 4, line skin pressure contact portion, 5, line skin, H, crimp height.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order to illustrate the reasonability of this method, the variation of pulling-out force size is influenceed by C＆E, DOE approach, identification first
Source.To general variation source, by the management and control to supplier, raw material, equipment etc., make it controlled under the conditions of defined,
So as to eliminate the influence to pulling-out force.For main variation source, then the methods of need by SPC and regression analysis, depth is carried out to it
Enter research, find the relation between pulling-out force and crimp height, founding mathematical models, so that it is determined that optimal crimp height value.
Now with FDHF-8E terminal compression joints 20mm2Exemplified by wire, the relation between pulling-out force and crimp height is ground
Study carefully, establish mathematical modeling between the two, determine optimal crimp height value (referring to Fig. 4).
1) C＆E matrixes are utilized, identification influences crimp quality variation source, sees Fig. 5.
First, according to QC/T 29106《Automotive voltage wirning harness technical conditions》The correlation of recognition terminal crimp quality is special
Property：Pulling-out force, voltage drop, section compression ratio.Then from raw material with terms of crimping apparatus two identification influence crimp characteristic because
Son.Include in terms of raw material：Wire gauge, terminal material, terminal U mouths size, terminal material are thick；Include in terms of crimping apparatus：Pressure
Pick tonnage, crimp blade width, mode transfer is formed, i.e. crimp height.
According to C＆E matrix principles, the degree of correlation between each characteristic and between each factor of influence is identified, to each factor of influence
The influence degree of different qualities is scored.Calculate the score value summation of each factor of influence.According to score height, judge that crimping is high
Degree is reduced to strong correlation relation with section compression ratio, pulling-out force, voltage, and mode transfer stroke (i.e. crimp height) is main variation source.Its
Remaining factor of influence is general variation source.
2) to general variation source, by process control, the influence to pulling-out force is eliminated.
A.U mouth sizes：Sampled 63 from the terminal FDHF-8E of two batches, measure the height and width of U mouths, and applied
Minitab softwares are analyzed data, calculate CPK the and PPK values of two sizes, establish U open heights and U mouth width dimensions
Normal distribution histogram, see Fig. 6, Fig. 7.
It can be seen that the CPK of U open height sizes is 2.91, PPK 2.79, process is had the ability, and process ensures that ability is higher,
Process stabilization is controlled.U mouth width process capabilities on pulling-out force without influence, therefore without research.The CPK of U mouth width dimensions is
1.97, PPK 1.94, process is had the ability, but produces bias, need to carry out continuing monitoring.But because U mouth width process capabilities are to pulling
Power measurement is weak related to pulling-out force, therefore it is not studied without influence.
B. for terminal material, extract exemplar from two batches, and exemplar commission third party is subjected to chemical composition, hard
Degree test.It the results are shown in Table 1, table 2.
Through overtesting, the chemical composition and hardness of two batch terminals all meet standard requirement, and terminal material is controlled.Terminal
Material and pulling-out force are weak dependency relation, therefore without research.
Table 1
Table 2
Note：H62Y is required in GB/T 2059-20082Between the copper material hardness of the trade mark is 90~130
3) to remaining factor of influence, DOE designs are carried out, checking influences the main variation source of pulling-out force.
The factor, level and orthogonal arrage 3, table 4.
Table 3
Table 4：
| 1 | 1 | 1 | 1 |
| 1 | 1 | 2 | 2 |
| 1 | 2 | 1 | 2 |
| 1 | 2 | 2 | 1 |
| 2 | 1 | 1 | 2 |
| 2 | 1 | 2 | 1 |
| 2 | 2 | 1 | 1 |
| 2 | 2 | 2 | 2 |
Exemplar is being crimped according to DOE on the same day by same operating personnel, and the pulling-out force and height of measurement terminal
Value.It the results are shown in Table 5.
Table 5
Pulling-out force test data
Crimp height test data
By test data typing minitab softwares, result of the test is analyzed.
A. single Main cause analysis：Pulling-out force main effect figure is drawn, sees Fig. 8.
According to pulling-out force main effect map analysis, the disturbance degree of each factor pair pulling-out force is：Crimp height ＞ expects thick ＞ crimping
Machine tonnage ＞ conductor sizes.Expect that the thick factor and pulling-out force are that strong positive correlation, crimp height and pulling-out force are strong negative correlation, remaining because
Element influences less, not considering on pulling-out force.
B. interactive analysis：The interaction diagram of pulling-out force and crimp height is drawn respectively, sees Fig. 9, Figure 10.
As seen from the figure, material is thick thick thick with crimp height, material thickness and diameter of wire, material with diameter of wire, material thickness and tonnage, material
Reciprocation between tonnage be present, but interactive influence degree need to be further determined that.
C. comprehensive analysis
The Pareto diagram of pulling-out force and crimp height is drawn, sees Figure 11, Figure 12.
As seen from the figure, the principal element for influenceing pulling-out force is crimp height, and the reciprocation between the factor is secondary cause,
Do not consider.
Analyzed by three above step, draw final conclusion：The principal element for influenceing pulling-out force is crimp height, other
Reciprocation between the factor and the factor is secondary cause, without research.
4) applied regression analysis, research pulling-out force and terminal compression joint height relationships
A. Data Collection is planned
Select the 20mm of different batches2Wire and FDHF-8E terminals, mould is debugged, before pulling-out force satisfaction >=1700N
Put, 20 terminals of continuous sampling, after measuring and recording height value, take 10 progress tensile tests, record height and value of thrust,
Other 10 terminals measurement voltage drop and section.Crimp height is turned down into 0.08mm, repeated sampling 20, and carries out above-mentioned survey
Amount, record result.Sample 19 times altogether, pulling force and height value result such as table 6.
Table 6
B. dependency relation determines
By result of the test typing minitab softwares, the scatter diagram of pulling-out force and crimp height is drawn, sees Figure 13.
The pearson coefficient correlations of pulling-out force and crimp height are calculated using minitab softwares, are as a result -0.929, position
Between -1 required -1, P value=0.000, illustrate dependency relation between crimp height and pulling-out force be present.Scatter diagram is in throwing
Thing wire shaped, and Open Side Down, therefore speculate that both relations are quadratic function：Y=ax2+bx+c。
Using minitab softwares, matching line chart is drawn.
Pulling-out force Y and crimp height X function prediction equation is Y=-329.2X2+2942X-3561.Goodness of fit R-Sq
For 90.1%, more than 0.9, illustrate fit correlation between crimp height and pulling-out force be present.The results of analysis of variance such as table 7：
Table 7
Variance analysis
It can be seen that P=0, less than confidence level 95%, illustrates that the recurrence of equation is notable.Standard deviation=95.8674,95%
Confidential interval, i.e., positive and negative 2 σ equation are：
Upper control limit：YOn=Y+2 σ
=-329.2X2+ 2942X-3369.274,
Lower control limit：YUnder=Y-2 σ
=-329.2X2+ 2942X-3752.753,
Give arbitrary pulling-out force or crimp height value, you can the scope of another characteristic at calculating.Establish pulling-out force with
The mathematical modeling of crimp height value.
5) optimal crimp height design
Pulling-out force matched curve and voltage drop, profile analysis result are plotted in a curve map, pulling-out force in figure >=
1700N, the crimp height scope 5.54-5.69mm that voltage drop, the qualified three of section overlap, as optimal crimp height value.
By monitoring optimal crimp height value, you can ensure that pulling-out force is located at and be more than or equal in the range of 1700N, drastically increase
The stability of process, while realize detection mode and detected from destructiveness to non-destructive detection conversion, reduce detection cost.Together
When, because the CPK values of crimp height reach 2.37, process capability is stronger, can by the frequency of inspection by it is first, in, last part is examined reduces
Examined for first, last part.Reduce and examine the frequency, save man-hour.
Claims (6)
- A kind of 1. terminal pulling-out force detection method, it is characterised in that methods described first against terminal and wire concrete condition, Relation between terminal pulling-out force and crimp height is found using regression analysis, then specifically according to terminal pulling-out force The span for determining crimp height is sought, finally by the monitoring to terminal crimp height, realizes the control to terminal pulling-out force；It is described that comprising the following steps that for the relation between terminal pulling-out force and crimp height is found using regression analysis：A. Data CollectionThe wire and terminal of different batches are selected, debugs mould, on the premise of pulling-out force meets to require, continuous 2N end of crimping Son, after measuring and recording crimp height value, N number of terminal is taken to carry out tensile test, record pulls force value, measures and record other N The voltage drop of individual terminal and section；Change crimp height value according to the interval of setting, repeat above-mentioned test M time, record test result；B. pulling-out force Y and crimp height X functional relation is determinedThe scatter diagram of pulling-out force and crimp height is drawn according to test data, matched curve is drawn according to scatter diagram, pulled Power Y and crimp height X functional relation；C. the span of crimp height is calculatedThe span of given pulling-out force, the value of crimp height is calculated according to pulling-out force Y and crimp height X functional relation Scope；D. the detection of terminal pulling-out forceThe crimp height of terminal is detected, if crimp height judges pulling for terminal in the span calculated For power in given span, pulling-out force is qualified, otherwise judges that pulling-out force is unqualified.
- 2. terminal pulling-out force detection method according to claim 1, it is characterised in that in order to ensure the crimping matter of terminal Amount, should also be according to electricity after calculating the span of terminal compression joint height according to pulling-out force Y and crimp height X functional relation Pressure drop and terminal section are modified to the restrictive condition of crimp height to the span of crimp height, and specific method is：Mark the crimp height corresponding to qualified terminal pulling-out force, terminal voltage drop and terminal section respectively on same figure Section, the common portion in three sections is then found out, obtain the optimum valuing range of revised terminal compression joint height.
- 3. terminal pulling-out force detection method according to claim 2, it is characterised in that the terminal compression joint is highly core The height of pressure contact portion.
- 4. terminal pulling-out force detection method according to claim 3, it is characterised in that to terminal compression joint height in production process The detection of degree uses first, last part check system.
- 5. terminal pulling-out force detection method according to claim 4, it is characterised in that the fitting drawn according to scatter diagram is bent Line is quadratic function curve.
- 6. terminal pulling-out force detection method according to claim 5, it is characterised in that in data-gathering process, repeat The setting of crimp height value is at intervals of 0.08mm during M test of row.
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| CN106327052A (en) * | 2016-07-27 | 2017-01-11 | 广西思诺电气有限公司 | Wiring harness automatic processing, testing and producing method |
| CN106501643B (en) * | 2016-10-21 | 2018-11-16 | 湘潭电机股份有限公司 | A kind of detection method of the resistance to pulling force of cable connector |
| CN108151935B (en) * | 2017-10-17 | 2020-03-31 | 武汉船用机械有限责任公司 | Tensile testing device and method for wiring terminal |
| CN110749843A (en) * | 2019-09-18 | 2020-02-04 | 苏州经纬通电子科技有限公司 | Wire harness terminal crimping height standard calculation method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458514A (en) * | 2007-12-13 | 2009-06-17 | 中芯国际集成电路制造(上海)有限公司 | Method for detecting acceptable test data and wafer acceptable test control method |
| CN101592692A (en) * | 2008-05-30 | 2009-12-02 | 中芯国际集成电路制造(北京)有限公司 | Measure the appraisal procedure of board |
| US7992449B1 (en) * | 2008-02-15 | 2011-08-09 | Mahmoud Khaled M | Method for assessment of cable strength and residual life |
-
2014
- 2014-12-27 CN CN201410826489.8A patent/CN104732005B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458514A (en) * | 2007-12-13 | 2009-06-17 | 中芯国际集成电路制造(上海)有限公司 | Method for detecting acceptable test data and wafer acceptable test control method |
| US7992449B1 (en) * | 2008-02-15 | 2011-08-09 | Mahmoud Khaled M | Method for assessment of cable strength and residual life |
| CN101592692A (en) * | 2008-05-30 | 2009-12-02 | 中芯国际集成电路制造(北京)有限公司 | Measure the appraisal procedure of board |
Non-Patent Citations (2)
| Title |
|---|
| 900 mm2大截面导线压接管优化设计研究;刘胜春等;《智能电网》;20140228;第30卷(第2期);60-65 * |
| 汽车电线束中端子的应用与解析;杨三军等;《汽车电器》;20101231(第2期);21-26 * |
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Effective date of registration: 20210818 Address after: 225300 Building 2, north of Chuangye Avenue, science and Innovation Park, Gaogang District, Taizhou City, Jiangsu Province Patentee after: Mande auto parts (Taizhou) Co.,Ltd. Address before: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee before: Great Wall Motor Co.,Ltd. |