CN103076165A - Self-locking V-shaped structure nut detection method - Google Patents
Self-locking V-shaped structure nut detection method Download PDFInfo
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- CN103076165A CN103076165A CN2012105842632A CN201210584263A CN103076165A CN 103076165 A CN103076165 A CN 103076165A CN 2012105842632 A CN2012105842632 A CN 2012105842632A CN 201210584263 A CN201210584263 A CN 201210584263A CN 103076165 A CN103076165 A CN 103076165A
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Abstract
The invention belongs to the technical field of the aviation machine, and relates to a self-locking V-shaped structure nut detection method. The self-locking V-shaped structure nut detection method comprises the following steps of: firstly, arranging a batch of N self-locking nuts to be detected according to a closing degree, and respectively detecting the self-locking nuts on two ends. Because the self-locking performance of the self-locking nut is directly affected by the closing degree of the self-locking V-shaped structure nut, the self-locking nut is firstly classified according to the closing degree with the method that the teeth number of the residual integral thread of the nut is subjected to visual inspection after the self-locking nut is freely rotated to a locking position; and then, the test is selectively carried out. Therefore, the accuracy of a judgment result is guaranteed; and the operation can be easily and simply carried out. The judgment accuracy of the method is 100%, and the accident risk in the product use process is almost zero.
Description
Technical field
The invention belongs to the aviation machine technical field, relate to a kind of V-structure self-locking nut detection method.
Background technology
Existing detection method is in this batch N self-locking nut to be detected, randomly drawing sample carries out the locking property test, if meeting the requirements, sample judges that then this batch N self-locking nut is qualified, if the undesirable sample drawn that then doubles at random carries out the locking property test, judge that then this batch N self-locking nut is qualified if the sample that doubles to extract all meets the requirements, otherwise judge that this batch N self-locking nut is defective.At the bottom of the accuracy rate of the method, very easily undetected, can cause judging in the qualified N self-locking nut and be mixed with defective self-locking nut, and judge and to be mixed with a large amount of qualified self-locking nuts in the underproof N self-locking nut, so not only can bring unnecessary loss to enterprise, also can in the use of product, bring great accident potential.
Summary of the invention
Goal of the invention: provide a kind of simple efficient and accuracy rate can reach a kind of V-structure self-locking nut detection method of 100%.
Technical scheme: a kind of V-structure self-locking nut detection method, described V-structure self-locking nut be V-structure from latching segment, may further comprise the steps:
Step 1: this batch N self-locking nut to be detected is arranged according to the size of closing in degree, the minimum self-locking nut that closes up is designated as nut No. 1, the maximum self-locking nut that closes up is designated as the N self-locking nut;
Step 2: No. 1 self-locking nut and N self-locking nut are made a service test, if all meet the requirements, then this batch N self-locking nut to be detected all meets testing requirement, if one of No. 1 self-locking nut or N self-locking nut or both all do not meet testing requirement, then select No. 2 self-locking nuts or N-1 self-locking nut and make a service test, until both all meet testing requirement.
The basis for estimation of the degree of closing in described in the step 1 is for freely being screwed into self-locking nut the tooth number of locking position back nut residue complete thread, and more closing ins of tooth number degree is larger.
Testing requirement described in the step 2 is GB/T 943-1988 " self-locking nut technical conditions ".
Beneficial effect: because the closing in degree direct influence of V-structure self-locking nut the self-locking property of self-locking nut, after so this method adopts and first self-locking nut freely is screwed into the locking position, the method of the tooth number of range estimation nut residue complete thread is classified tested self-locking nut by the closing in degree, and then selectively test, like this, not only having guaranteed the accuracy of result of determination, also is simple in operation.The accuracy of judging through the method can reach 100 ﹪, and accident risk was almost nil during product used.
Description of drawings
Fig. 1 is V-structure self-locking nut structural representation among the present invention.
Embodiment
The below is described in further detail the present invention, sees also Fig. 1.
As shown in Figure 1, be V-structure self-locking nut schematic diagram to be detected among the present invention.
A kind of V-structure self-locking nut detection method, described V-structure self-locking nut be V-structure from latching segment, may further comprise the steps:
Step 1: this batch N self-locking nut to be detected is arranged according to the size of closing in degree, the minimum self-locking nut that closes up is designated as self-locking nut No. 1, the maximum nut that closes up is designated as the N self-locking nut;
Step 2: No. 1 self-locking nut and N self-locking nut are made a service test, if all meet the requirements, then this batch N self-locking nut to be detected all meets testing requirement, if one of No. 1 self-locking nut or N self-locking nut or both all do not meet testing requirement, then select No. 2 self-locking nuts or N-1 self-locking nut and make a service test, until both all meet testing requirement.
The basis for estimation of the degree of closing in described in the step 1 is for freely being screwed into self-locking nut the tooth number of locking position back nut residue complete thread, and more closing ins of tooth number degree is larger.
Testing requirement described in the step 2 is GB/T 943-1988 " self-locking nut technical conditions ".
For example: a collection of self-locking nut to be detected is arranged, quantity is N, before the locking property test, first with the test bolt with how much the be divided into array of this batch N self-locking nut by the tooth number that self-locking nut freely is screwed into locking position back nut residue complete thread, again at the tooth number of residue complete thread at most and sample respectively in minimum two groups and test.If the tooth number of residue complete thread all meets GB/T 943-1988 requirement with minimum two groups of sampling at most, and is then qualified by the gross; If sample to back-out for the 15 time and be screwed into moment greater than GB/T 943-1988 requirement one group of first time of sampling that moment requires less than GB/T943-1988 or the tooth number of residue complete thread is minimum for one group that the tooth number of residue complete thread is maximum, then declare this batch self-locking nut defective.If sampling, a group of being screwed into that moment requires greater than GB/T 943-198 or the tooth number of residue complete thread is minimum for the first time of maximum one group sampling of the tooth number of residue complete thread back-outs moment for the 15 time less than the GB/T943-198 requirement, then declare this group self-locking nut defective, then at the tooth number of residue complete thread near sampling test in a group of this group, until the sample standard deviation of taking out satisfies GB/T 943-198 requirement, then declare the residue nut be qualified.
Claims (3)
1. V-structure self-locking nut detection method, described V-structure self-locking nut be V-structure from latching segment, it is characterized in that, may further comprise the steps:
Step 1: this batch N self-locking nut to be detected is arranged according to the size of closing in degree, the minimum self-locking nut that closes up is designated as self-locking nut No. 1, the maximum nut that closes up is designated as the N self-locking nut;
Step 2: No. 1 self-locking nut and N self-locking nut are carried out the locking property test, if all meet the requirements, then this batch N self-locking nut to be detected all meets testing requirement, if one of No. 1 self-locking nut or N self-locking nut or both all do not meet testing requirement, then select No. 2 self-locking nuts or N-1 self-locking nut and make a service test, until both all meet testing requirement.
2. a kind of V-structure self-locking nut detection method according to claim 1, it is characterized in that, the basis for estimation of the degree of closing in described in the step 1 is for freely being screwed into self-locking nut the tooth number of locking position back nut residue complete thread, and more closing ins of tooth number degree is larger.
3. a kind of V-structure self-locking nut detection method according to claim 2 is characterized in that, the testing requirement described in the step 2 is GB/T 943-1988 " self-locking nut technical conditions ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105842632A CN103076165A (en) | 2012-12-27 | 2012-12-27 | Self-locking V-shaped structure nut detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105842632A CN103076165A (en) | 2012-12-27 | 2012-12-27 | Self-locking V-shaped structure nut detection method |
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| Publication Number | Publication Date |
|---|---|
| CN103076165A true CN103076165A (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105842632A Pending CN103076165A (en) | 2012-12-27 | 2012-12-27 | Self-locking V-shaped structure nut detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333025A (en) * | 2019-07-16 | 2019-10-15 | 中国航发沈阳发动机研究所 | The design method and plug thread gauge of self-locking nut locking torque validation checking tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU913104A1 (en) * | 1980-04-25 | 1982-03-15 | Arsenevskij Mashinostroitelnyj | Stand for testing self-locking nuts |
| CN2142567Y (en) * | 1992-11-25 | 1993-09-22 | 上海标准件三厂 | Working characteristic measuring apparatus for lock nut |
| CN101905272A (en) * | 2010-07-12 | 2010-12-08 | 贵州大学 | Self-locking nut crimping processing method |
| CN102764963A (en) * | 2012-07-31 | 2012-11-07 | 江西洪都航空工业集团有限责任公司 | Method for machining, detecting, riveting and assembling earless pallet self-locking nut with elliptical head |
-
2012
- 2012-12-27 CN CN2012105842632A patent/CN103076165A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU913104A1 (en) * | 1980-04-25 | 1982-03-15 | Arsenevskij Mashinostroitelnyj | Stand for testing self-locking nuts |
| CN2142567Y (en) * | 1992-11-25 | 1993-09-22 | 上海标准件三厂 | Working characteristic measuring apparatus for lock nut |
| CN101905272A (en) * | 2010-07-12 | 2010-12-08 | 贵州大学 | Self-locking nut crimping processing method |
| CN102764963A (en) * | 2012-07-31 | 2012-11-07 | 江西洪都航空工业集团有限责任公司 | Method for machining, detecting, riveting and assembling earless pallet self-locking nut with elliptical head |
Non-Patent Citations (2)
| Title |
|---|
| 国家技术监督局: "《中华人民共和国国家标准GB/T943-88》", 22 December 1988 * |
| 张建军等: "辅以排序集样本的分层抽样方法研究", 《统计与信息论坛》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110333025A (en) * | 2019-07-16 | 2019-10-15 | 中国航发沈阳发动机研究所 | The design method and plug thread gauge of self-locking nut locking torque validation checking tool |
| CN110333025B (en) * | 2019-07-16 | 2021-04-16 | 中国航发沈阳发动机研究所 | Design method of tool for detecting effectiveness of locking torque of self-locking nut and thread plug gauge |
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Application publication date: 20130501 |