CN106248572A - A kind of bolt friction coefficient measuring apparatus - Google Patents
A kind of bolt friction coefficient measuring apparatus Download PDFInfo
- Publication number
- CN106248572A CN106248572A CN201610635026.2A CN201610635026A CN106248572A CN 106248572 A CN106248572 A CN 106248572A CN 201610635026 A CN201610635026 A CN 201610635026A CN 106248572 A CN106248572 A CN 106248572A
- Authority
- CN
- China
- Prior art keywords
- measurement module
- bolt
- end measurement
- rear end
- friction coefficient
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The present invention relates to measurement apparatus technical field, disclose a kind of bolt friction coefficient measuring apparatus, including testing stand and measure-controlling unit, urgent electricity rifle, front end measurement module and rear end measurement module it is sequentially provided with on described testing stand, equipped with moment of torsion angle measurement unit on described urgent electricity rifle, described front end measurement module is built-in with pressure transducer, described rear end measurement module is built-in with torque sensor；And described front end measurement module is fixed with adapter near the side of described urgent electricity rifle, described adapter is pressed close to the surface of bolt end to be measured and is provided with exemplar section placing trough；Described rear end measurement module is provided with locking nut fixed structure；Being additionally provided with simulation connector between described front end measurement module and described rear end measurement module, described adapter, described front end measurement module, described rear end measurement module and described simulation connector are provided with the bolt mounting holes being coaxially disposed.This measurement apparatus can record all crucial coefficient of frictions of bolt, and measurement result is accurate.
Description
Technical field
The present invention relates to measurement apparatus technical field, particularly relate to a kind of bolt friction coefficient measuring apparatus.
Background technology
The crucial coefficient of friction of engine bolt, including total coefficient of friction, thread friction coefficient u1With end-face friction coefficient
u2, as it is shown in figure 1, these coefficient of frictions are important indicators of engine test exploitation, it is electromotor design rationality, tight
The type selecting of fixing bolt, material select the important investigation foundation with power failure pattern analysis.
With reference to Fig. 2, according to conventional test methodologies, by torque wrench 1 ＇, fastening bolt 2 ＇ is applied moment of torsion, and read defeated
Enter moment of torsion, use pressure transducer 3 ＇ being arranged on described fastening bolt 2 ＇ to record bolt clamping force simultaneously.According to obtain
Input torque and bolt clamping force can get total coefficient of friction of total bolt, but owing to this measuring method is only capable of recording above-mentioned two
Individual parameter, it is impossible to obtain thread friction coefficient u1With end-face friction coefficient u2, it is impossible to effectively meet the need of engine test exploitation
Ask.
Summary of the invention
The purpose of the present invention is providing a kind of bolt friction coefficient measuring apparatus, can record simultaneously bolt urgent time multiple
Parameter, thus obtain all of crucial coefficient of friction of bolt, provide foundation for engine test exploitation.
To achieve these goals, the invention provides following technical scheme:
A kind of bolt friction coefficient measuring apparatus, including testing stand, described testing stand is sequentially provided with urgent electricity rifle, front end
Measurement module and rear end measurement module, equipped with moment of torsion angle measurement unit on described urgent electricity rifle, in the measurement module of described front end
It is built-in with pressure transducer, described rear end measurement module is built-in with torque sensor；And described front end measurement module is near institute
The side stating urgent electricity rifle is fixed with adapter, and described adapter is pressed close to the surface of bolt end to be measured and is provided with exemplar section and puts
Put groove；Described rear end measurement module is provided with locking nut fixed structure；Mould is measured in described front end measurement module and described rear end
Simulation connector, described adapter, described front end measurement module, described rear end measurement module and described simulation it is additionally provided with between block
Connector is provided with the bolt mounting holes being coaxially disposed.
Above-mentioned bolt friction coefficient measuring apparatus, also includes measure-controlling unit, and described measure-controlling unit receives described
The data that moment of torsion angle measurement unit, described pressure transducer and described torque sensor record.
Above-mentioned bolt friction coefficient measuring apparatus, also includes controlling motor, and described control motor is according to the urgent plan preset
Slightly drive described urgent electricity rifle work.
Above-mentioned bolt friction coefficient measuring apparatus, described simulation connector includes multiple pad being placed in parallel, adjacent
Described pad is adjacent to arrange.
Above-mentioned bolt friction coefficient measuring apparatus, described adapter and the detachable fixing company of described front end measurement module
Connect.
Above-mentioned bolt friction coefficient measuring apparatus, described locking nut fixed structure is detachable with described rear end measurement module
Formula is fixing to be connected.
Above-mentioned bolt friction coefficient measuring apparatus, described testing stand is provided with slide rail, and described urgent electricity rifle, described front end are surveyed
Amount module, described rear end measurement module and described simulation connector are each attached on described slide rail.
The beneficial effects of the present invention is:
The bolt friction coefficient measuring apparatus that the present invention provides, can record simultaneously the urgent moment of torsion of bolt to be measured and angle,
The moment of torsion of locking screw female end, the parameter such as clamping force of bolt to be measured such that it is able to obtain total coefficient of friction, thread friction system simultaneously
The bolt key coefficient of frictions such as number and end-face friction coefficient, meet pilot development requirement.Cut it addition, this measurement apparatus is provided with exemplar
Sheet placing trough, it is possible to ensure that bolt head contact surface to be measured is consistent with duty, be additionally provided with simulation connector in measurement apparatus,
Bolt can be measured when identical with actually used operating mode, be beneficial to ensure the accuracy of measurement result.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
Need the accompanying drawing used to be briefly described, and by combining accompanying drawing, the concrete scheme of the present invention is further described.Wherein:
Fig. 1 is bolt key coefficient of friction schematic diagram；
Fig. 2 is conventional bolt testing device for friction coefficient schematic diagram；
The structural representation of the bolt friction coefficient measuring apparatus that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the first structural representation of adapter in the embodiment of the present invention；
Fig. 5 is the second structural representation of adapter in the embodiment of the present invention；
Fig. 6 is the first structural representation of rear end measurement module in the embodiment of the present invention；
Fig. 7 is the second structural representation of rear end measurement module in the embodiment of the present invention.
Label declaration in the most above-mentioned accompanying drawing is as follows:
u1-thread friction coefficient, u2-end-face friction coefficient；
1 ＇-torque wrench, 2 ＇-fastening bolt, 3 ＇-pressure transducer；
1-testing stand, 2-urgent electricity rifle, 3-front end measurement module, 4-rear end measurement module, 5-moment of torsion angle measurement unit,
6-adapter, 7-locking nut fixed structure, 8-simulates connector, 9-slide rail；
61-exemplar section placing trough；A-bolt to be measured, B locking nut.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with specific embodiment pair
This programme is discussed in detail further.
The embodiment of the present invention provide bolt friction coefficient measuring apparatus as it is shown on figure 3, include testing stand 1, described test
Urgent electricity rifle 2, front end measurement module 3 and rear end measurement module 4 it is sequentially provided with, equipped with moment of torsion angle on described urgent electricity rifle 2 on platform 1
Degree measurement apparatus 5, in order to measure moment of torsion urgent for bolt A to be measured and angle, is built-in with pressure and passes in described front end measurement module 3
Sensor (not shown), described pressure transducer is in order to measure the clamping force of bolt A to be measured, interior in described rear end measurement module 4
Being equipped with torque sensor (not shown), this torque sensor is in order to measure the moment of torsion of locking nut B end.Therefore, this measurement dress
Put the parameters such as the clamping force that can simultaneously record the urgent moment of torsion of bolt to be measured and angle, the moment of torsion of locking screw female end, bolt to be measured,
It is thus possible to obtain the bolt key coefficient of frictions such as total coefficient of friction, thread friction coefficient and end-face friction coefficient simultaneously, meet
Pilot development requirement.
In this measurement apparatus, described front end measurement module 3 is fixed with adapter 6 near the side of described urgent electricity rifle 2,
Described adapter 6 is pressed close to the surface of bolt A termination to be measured and is provided with exemplar section placing trough 61, and as shown in Figure 4, exemplar section is i.e.
During bolt real work to be measured, the section of the material of bolt head contact, so arrange and ensure that bolt head contact surface and reality
Border duty is consistent.Described rear end measurement module 4 is provided with locking nut fixed structure 7, with reference to Fig. 3；Described front end is measured
Simulation connector 8 it is additionally provided with, in order to simulate the actual working state of bolt to be measured between module 3 and described rear end measurement module 4.
Described adapter 6, described front end measurement module 3, described rear end measurement module 4 and described simulation connector 8 are provided with and coaxially set
The bolt mounting holes put.The measurement apparatus being arranged such, it is possible to make bolt measuring state consistent with duty, it is ensured that measure
The accuracy of result.
Preferably, described bolt friction coefficient measuring apparatus also includes that measure-controlling unit, described measure-controlling unit connect
The data recorded by described moment of torsion angle measurement unit 5, described pressure transducer and described torque sensor, convenient measurement continuously
Time the record of data and process, improve ability and data analysis capabilities that device is measured continuously.
Further, described bolt friction coefficient measuring apparatus may also include control motor, and described control motor is according to pre-
If urgent policy-driven described in urgent electricity rifle work.It is urgent, at the uniform velocity that described urgent strategy can be that moment of torsion is urgent, moment of torsion adds angle
Urgent strategy such as grade, by changing urgent moment of torsion, angle or speed, analyzes the parameters impact on bolt coefficient of friction respectively.
As it is shown on figure 3, in a preferred embodiment of the invention, described simulation connector 8 includes multiple pad being placed in parallel,
Adjacent described pad is adjacent to arrange, tests the distance between bolt head and locking nut in pre-test bolt real work, logical
The quantity overregulating pad is simulated this distance, is conveniently used for the measurement under different operating mode.
In described bolt friction coefficient measuring apparatus, it is preferable that described adapter 6 with described front end measurement module 3 is
Detachable fixing connection, as it is shown in figure 5, connection screw thread can be processed on described adapter 6, with described front end measurement module 3
Use threaded mode.Detachable fixing connection, the convenient model according to bolt to be measured is selected different adapters, is protected
The bolt of card different model all can obtain measurement result accurately, improves the versatility of device.
It addition, described locking nut fixed structure 7 and described rear end measurement module 4 are it is also preferred that use detachable fixing company
Connecing, the convenient model according to locking nut selects different locking nut fixed structures, as shown in Figure 6 and Figure 7, improves measurement
Accuracy.
With reference to Fig. 3, described testing stand 1 is additionally provided with slide rail 9, described urgent electricity rifle 2, described front end measurement module 3, described
Rear end measurement module 4 and described simulation connector 8 are each attached on described slide rail 9, convenient according to the test demand above-mentioned knot of adjustment
The fixed position of structure.
The bolt friction coefficient measuring apparatus that the embodiment of the present invention provides can measure all crucial coefficient of frictions of bolt, measures
Structure accuracy is good, measures the most continuously, is beneficial to analyze the factor shadows to coefficient of friction such as urgent moment of torsion, angle, speed
Ring.This measurement apparatus can be additionally used in the yield point analysis measuring bolt, and duty clamping force is analyzed, the urgent policy development of bolt
Deng.
The structure of the present invention, feature and action effect, above institute are described in detail above according to graphic shown embodiment
State only presently preferred embodiments of the present invention, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Want made change, or be revised as the Equivalent embodiments of equivalent variations, still without departing from description and diagram contained spiritual time,
All should be in protection scope of the present invention.
Claims (7)
1. a bolt friction coefficient measuring apparatus, it is characterised in that include testing stand, described testing stand is sequentially provided with urgent
Electricity rifle, front end measurement module and rear end measurement module, described urgent electricity rifle is surveyed equipped with moment of torsion angle measurement unit, described front end
Amount module is built-in with pressure transducer, described rear end measurement module is built-in with torque sensor；And described front end measures mould
Block is fixed with adapter near the side of described urgent electricity rifle, and described adapter is pressed close to the surface of bolt end to be measured and is provided with sample
Part section placing trough；Described rear end measurement module is provided with locking nut fixed structure；Described front end measurement module and described after
Be additionally provided with simulation connector between end measurement module, described adapter, described front end measurement module, described rear end measurement module and
Described simulation connector is provided with the bolt mounting holes being coaxially disposed.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that also include measure-controlling unit,
Described measure-controlling unit receives what described moment of torsion angle measurement unit, described pressure transducer and described torque sensor recorded
Data.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that also include controlling motor, described
Control motor according to electricity rifle work urgent described in the urgent policy-driven preset.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that described simulation connector includes many
The individual pad being placed in parallel, adjacent described pad is adjacent to arrange.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that described adapter and described front end
The detachable fixing connection of measurement module.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that described locking nut fixed structure
Detachable with described rear end measurement module fixing it is connected.
Bolt friction coefficient measuring apparatus the most according to claim 1, it is characterised in that described testing stand is provided with cunning
Rail, described urgent electricity rifle, described front end measurement module, described rear end measurement module and described simulation connector are each attached to described
On slide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635026.2A CN106248572A (en) | 2016-08-04 | 2016-08-04 | A kind of bolt friction coefficient measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635026.2A CN106248572A (en) | 2016-08-04 | 2016-08-04 | A kind of bolt friction coefficient measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106248572A true CN106248572A (en) | 2016-12-21 |
Family
ID=58078281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610635026.2A Pending CN106248572A (en) | 2016-08-04 | 2016-08-04 | A kind of bolt friction coefficient measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106248572A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657976A (en) * | 2019-10-12 | 2020-01-07 | 北京工业大学 | Bolt fastening experimental device for ensuring coaxiality |
| CN111721697A (en) * | 2020-06-24 | 2020-09-29 | 北京工业大学 | General measuring device for key friction coefficients of bolt applicable to torque method and corner method |
| CN113758864A (en) * | 2021-09-23 | 2021-12-07 | 江苏徐工工程机械研究院有限公司 | Thread friction coefficient detection device |
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|---|---|---|---|---|
| JPH095230A (en) * | 1995-06-16 | 1997-01-10 | Sumitomo Heavy Ind Ltd | Apparatus for measuring resin to metal friction coefficient |
| JP2003344192A (en) * | 2002-05-24 | 2003-12-03 | Trinity Lab:Kk | Simple static friction measurement apparatus |
| CN201163265Y (en) * | 2007-12-14 | 2008-12-10 | 洪亮 | Torque coefficient tester for high strength bolt connection set |
| CN103364135A (en) * | 2013-06-21 | 2013-10-23 | 上海诺霸科技有限公司 | Buffer clamp |
| CN103728241A (en) * | 2013-10-10 | 2014-04-16 | 西安交通大学 | Testing device and method for detecting friction coefficients of bolt head supporting surfaces |
| CN203561575U (en) * | 2013-10-10 | 2014-04-23 | 西安交通大学 | Testing apparatus for detecting friction coefficients of thread engagement surfaces |
| CN204044044U (en) * | 2014-07-31 | 2014-12-24 | 杜承霖 | A kind of bolt friction coefficient measuring apparatus |
| CN104870959A (en) * | 2012-12-18 | 2015-08-26 | 阿特拉斯·科普柯工业技术公司 | Method and apparatus for evaluating clamp force in a bolt by means of ultra-sonic measurements |
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2016
- 2016-08-04 CN CN201610635026.2A patent/CN106248572A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH095230A (en) * | 1995-06-16 | 1997-01-10 | Sumitomo Heavy Ind Ltd | Apparatus for measuring resin to metal friction coefficient |
| JP2003344192A (en) * | 2002-05-24 | 2003-12-03 | Trinity Lab:Kk | Simple static friction measurement apparatus |
| CN201163265Y (en) * | 2007-12-14 | 2008-12-10 | 洪亮 | Torque coefficient tester for high strength bolt connection set |
| CN104870959A (en) * | 2012-12-18 | 2015-08-26 | 阿特拉斯·科普柯工业技术公司 | Method and apparatus for evaluating clamp force in a bolt by means of ultra-sonic measurements |
| CN103364135A (en) * | 2013-06-21 | 2013-10-23 | 上海诺霸科技有限公司 | Buffer clamp |
| CN103728241A (en) * | 2013-10-10 | 2014-04-16 | 西安交通大学 | Testing device and method for detecting friction coefficients of bolt head supporting surfaces |
| CN203561575U (en) * | 2013-10-10 | 2014-04-23 | 西安交通大学 | Testing apparatus for detecting friction coefficients of thread engagement surfaces |
| CN204044044U (en) * | 2014-07-31 | 2014-12-24 | 杜承霖 | A kind of bolt friction coefficient measuring apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657976A (en) * | 2019-10-12 | 2020-01-07 | 北京工业大学 | Bolt fastening experimental device for ensuring coaxiality |
| CN111721697A (en) * | 2020-06-24 | 2020-09-29 | 北京工业大学 | General measuring device for key friction coefficients of bolt applicable to torque method and corner method |
| WO2021258568A1 (en) * | 2020-06-24 | 2021-12-30 | 北京工业大学 | Versatile measurement device applicable in torque-based and angle-based methods for various critical coefficients of friction of screw |
| CN113758864A (en) * | 2021-09-23 | 2021-12-07 | 江苏徐工工程机械研究院有限公司 | Thread friction coefficient detection device |
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| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |