CN108956344A - A kind of rubber pad forming sheet metal component fatigue testing apparatus and testing method - Google Patents
A kind of rubber pad forming sheet metal component fatigue testing apparatus and testing method Download PDFInfo
- Publication number
- CN108956344A CN108956344A CN201810366710.4A CN201810366710A CN108956344A CN 108956344 A CN108956344 A CN 108956344A CN 201810366710 A CN201810366710 A CN 201810366710A CN 108956344 A CN108956344 A CN 108956344A
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- sheet metal
- metal component
- measured
- rectangular fixture
- rubber pad
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of rubber pad forming sheet metal component fatigue testing apparatus and testing methods, including rectangular fixture, telescopic clamp, loading bolt and cabinet.Start motor, band movable eccentric wheel rotates, eccentric wheel moves back and forth, period alternate stress is acted on rectangular fixture, period alternate stress is applied on sheet metal component to be measured by rectangular fixture, after fatigue fracture occurs for sheet metal component to be measured, closes motor, read the circle number that lap count is shown, the fatigue life of sheet metal component as to be measured.It can be by adjusting the size of eccentric wheel or the stiffness factor of adjustment spring, so as to adjust loading force.Telescopic clamp and rectangular fixture can be adjusted in position according to the size of sheet metal component to be measured simultaneously.
Description
Technical field
The present invention relates to test measurement technical field more particularly to a kind of rubber pad forming sheet metal component fatigue testing apparatus and surveys
Proved recipe method.
Background technique
Large aircraft is manufacturing landmark project, and large aircraft shell is composed of fuselage and wing, fuselage
With a large amount of sheet metal component is contained on wing.Rubber pad forming is used widely in the manufacture of sheet metal part, and safety is winged
The main performance index of machine.The lift generated when aircraft is due to flight in the sky mainly by wing, part are chronically at high stress
State, the destruction of part are mainly fatigue damage, and fatigue behaviour is one of the main performance of sheet metal part.Sheet metal at present
The fatigue behaviour measurement of part is fewer, depends on experience and Intensity Design.Sheet metal component is easy hair during rubber pad forming
Raw Plastic Damage, especially some parts are needed using manual school shape since precision is not achieved, can be right during hand finishing
The fatigue of sheet metal component generates certain damage, but damage is much, is currently a unknown number.Rubber pad forming sheet metal component mainly has
Straight flange, male bend side, recessed crimp and complicated crimp class, it is a difficult point that how the part of various crimps, which carries out fatigue strength measurement,
Problem.It is difficult to measure using some conventional fatigue testers, mainly sheet metal part clamps, alignment and load are all compared
It is difficult.
102706759 B of China Patent Publication No. CN, publication date on January 7th, 2015, a kind of entitled " flexural fatigue examination
Test machine " it is mainly used for the fatigue behaviour measurement of crooked part, disadvantage is that: the fatigue behaviour for being difficult to use in sheet metal component is surveyed
Amount, and load is unable to adjust, and can not carry out the measurement of fatigue behaviour under different loads.
Summary of the invention
Purpose of the invention is to overcome the shortcomings in the prior art, provides a kind of adjustable test load, can needle
Different types of sheet metal component is test, rubber pad forming sheet metal component fatigue testing apparatus and testing method easy to operate.
To achieve the above object, the invention adopts the following technical scheme:
A kind of rubber pad forming sheet metal component fatigue testing apparatus, characterized in that including rectangular fixture, telescopic clamp, loading bolt
And cabinet, the cabinet is equipped with the transmission shaft through cabinet, and being arranged on transmission shaft can be eccentric in axial sliding along transmission shaft
Wheel；The interior is equipped with limiting slot；The limiting slot is equipped with rectangular fixture, and rectangular fixture and limiting slot slide
Connection；The rectangular fixture is equipped with the cavity of perforation, and rectangular fixture upper surface is equipped with through-hole in the vertical direction, the through-hole with
Loading bolt is threadedly coupled；The cavity upper surface is equipped with nut, and nut is connect with loading bolt；Table on the loading bolt
Face is close to eccentric wheel, sheathed spring on loading bolt, pressure sensor is equipped between spring and loading bolt, on the spring
End is close to pressure sensor, and lower spring end is close to rectangular fixture upper surface；The telescopic clamp is arranged in the bottom of box.
Eccentric wheel rotation periodically will apply a loading force to loading bolt, and spring and pressure sensor can be by the weeks of application
The loading force of phase property, is intuitively reflected on computers, can be by adjusting the size of eccentric wheel or the strength of adjustment spring
Coefficient is spent, so as to adjust loading force.Simultaneously can according to the size of sheet metal component to telescopic clamp and rectangular fixture in position into
Row adjustment.
Preferably, the rectangular fixture lower surface is equipped with several threaded holes, the telescopic clamp in the vertical direction
It is equipped with several threaded holes in a lateral direction.Guarantee that sheet metal component to be measured in test, can obtain effectively stable fixation, reduces
Measurement error.
Preferably, the side that is bonded with sheet metal component to be measured of the telescopic clamp is in facing directly or concave surface.Sheet metal component is curved
When being usually in straight flange or male bend, telescopic clamp can according to circumstances be faced directly or the cooperation of curved surface.
Preferably, described transmission shaft one end is connect with motor, the transmission shaft other end connects a lap count.
A kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus leads to sheet metal component side to be measured with rectangular fixture
It crosses and is bolted, the sheet metal component other side to be measured is bolted with telescopic clamp, and connect in bolt with sheet metal component to be measured
Pad a upper setting-up piece in place.
Preferably, eccentric wheel rotation is turned around, the reading of pressure sensor is read, by adjusting the stiffness system of spring
Number, adjusts the size of loading force to meet the requirement of testing fatigue power.
Preferably, adjusting the size of loading force by adjusting the size for changing eccentric wheel.
Preferably, starting motor, band movable eccentric wheel rotates, and eccentric wheel moves back and forth, by period alternate stress
It acts on rectangular fixture, period alternate stress is applied on sheet metal component to be measured by rectangular fixture, when sheet metal component to be measured generation is tired
After labor fracture, motor is closed, reads the circle number that lap count is shown, the fatigue life of sheet metal component as to be measured.
Beneficial effects of the present invention: (1) structure is simple, easy to operate；(2) loading force is adjustable；It (3) can be for different big
Small and different structure sheet metal component carries out the adjustment of position or shape.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is straight flange sheet metal component schematic diagram to be measured；
Fig. 3 is that straight flange sheet metal component to be measured clamps schematic diagram；
Fig. 4 is male bend side sheet metal component schematic diagram to be measured；
Fig. 5 is that male bend side sheet metal component to be measured clamps schematic diagram.
In figure: motor 1, cabinet 2, transmission shaft 3, eccentric wheel 4, lap count 5, loading bolt 6, spring 7, pressure pass
Sensor 8, rectangular fixture 9, sheet metal component to be measured 10, bolt 11, telescopic clamp 12, limiting slot 13, pedestal 14, setting-up piece 15.
Specific embodiment
Structure and working principle of the invention are further described in the following with reference to the drawings and specific embodiments:
Embodiment 1: as shown in Figure 1 to Figure 3, a kind of rubber pad forming sheet metal component fatigue testing apparatus, characterized in that including rectangular folder
Tool 9, telescopic clamp 12, loading bolt 6 and cabinet 2, the cabinet 2 are equipped with the transmission shaft 3 through cabinet 2, and transmission shaft 3
On be arranged can be along eccentric wheel 4 in axial sliding of transmission shaft 3；2 inner surface of cabinet is equipped with limiting slot 13；The limiting slot 13
The upper rectangular fixture 9 of setting, and rectangular fixture 9 is slidably connected with limiting slot 13；The rectangular fixture 9 is equipped with the cavity of perforation, side
9 upper surface of clamp is equipped with through-hole in the vertical direction, and the through-hole is threadedly coupled with loading bolt 6；The cavity upper surface
Equipped with nut, and nut is connect with loading bolt 6；6 upper surface of loading bolt is close to eccentric wheel 4, covers on loading bolt 6
If spring 7, pressure sensor 8 is equipped between spring 7 and loading bolt 6,7 upper end of spring is close to pressure sensor 8, bullet
It is close to rectangular 9 upper surface of fixture 7 lower end of spring；The telescopic clamp 12 is arranged in 2 bottom of cabinet.
9 lower surface of rectangular fixture is equipped with several threaded holes in the vertical direction, and the telescopic clamp 12 is in transverse direction
Direction is equipped with several threaded holes.
The side that the telescopic clamp 12 is bonded with sheet metal component 10 to be measured is in facing directly or concave surface.
Described 3 one end of transmission shaft is connect with motor 1, and 3 other end of transmission shaft connects a lap count 5.
In the present embodiment, sheet metal component crimp to be measured is straight flange, and a side of telescopic clamp is to face directly, rectangular fixture
It is seated in limiting slot, can only be moved forward and backward in the direction of limiting slot, motor is rotated by transmission shaft band movable eccentric wheel, by power
It is transmitted on rectangular fixture, while power being acted on sheet metal component to be measured, by the reciprocating motion of eccentric wheel, period alternation is answered
Power acts on sheet metal component to be measured, after workpiece fracture, reads the circle number that lap count is shown, the fatigue of sheet metal component as to be measured
Service life.
Embodiment 2: embodiment 2 and embodiment 1 have similar basic structure and embodiment, as shown in Figure 4 and Figure 5,
The difference is that: 10 crimp of sheet metal component to be measured is male bend side, in order to enable sheet metal component 10 to be measured to stablize, telescopic clamp
12 sides being bonded with sheet metal component 10 to be measured are concave surface, and male bend side sheet metal component 10 to be measured it is fixed need bolt 11 with it is to be measured
Pad a upper setting-up piece 15 in 10 junction of sheet metal component.
Measurement method of the invention is further described in the following with reference to the drawings and specific embodiments:
As shown in Figures 1 to 5, a kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus, by sheet metal component 10 1 to be measured
Side is connect with rectangular fixture 9 by bolt 11, and 10 other side of sheet metal component to be measured is connect with telescopic clamp 12 by bolt 11, and
A upper setting-up piece 15 is padded in bolt 11 and 10 junction of sheet metal component to be measured.The rotation of eccentric wheel 4 is turned around, pressure sensing is read
The reading of device 8, by adjusting the stiffness factor of spring 7, adjust the size of loading force with meet the requirement of testing fatigue power or
By adjusting the size for changing eccentric wheel 4, the size of loading force is adjusted.Start motor 1, band movable eccentric wheel 4 rotates, eccentric wheel
4 move back and forth, and period alternate stress is acted on rectangular fixture 9, rectangular fixture 9 by period alternate stress be applied to
It surveys on sheet metal component 10, after fatigue fracture occurs for sheet metal component 10 to be measured, closes motor 1, read the circle that lap count 5 is shown
Number, the fatigue life of sheet metal component 10 as to be measured.
In the present embodiment, rectangular fixture is seated in limiting slot, can only be moved forward and backward in the direction of limiting slot, and motor is logical
It crosses transmission shaft band movable eccentric wheel to rotate, transfer force on rectangular fixture, while power being acted on sheet metal component to be measured, by inclined
The reciprocating motion of heart wheel acts on period alternate stress on sheet metal component to be measured, can be by adjusting the size or tune of eccentric wheel
The stiffness factor of whole spring, so as to adjust loading force.It simultaneously can be according to the size of sheet metal component to be measured to telescopic clamp and rectangular
Fixture is adjusted in position.
Claims (8)
1. a kind of rubber pad forming sheet metal component fatigue testing apparatus, characterized in that including rectangular fixture, telescopic clamp, load spiral shell
Bolt and cabinet, the cabinet is equipped with the transmission shaft through cabinet, and being arranged on transmission shaft can be inclined in axial sliding along transmission shaft
Heart wheel；
The interior is equipped with limiting slot；
Rectangular fixture is set on the limiting slot, and rectangular fixture is slidably connected with limiting slot；
The rectangular fixture is equipped with the cavity of perforation, and rectangular fixture upper surface is equipped with through-hole in the vertical direction, the through-hole with
Loading bolt is threadedly coupled；The cavity upper surface is equipped with nut, and nut is connect with loading bolt；
The loading bolt upper surface is close to eccentric wheel, and sheathed spring on loading bolt is equipped between spring and loading bolt
Pressure sensor, the spring upper end are close to pressure sensor, and lower spring end is close to rectangular fixture upper surface；
The telescopic clamp setting is in the bottom of box, and telescopic clamp is located at below rectangular fixture.
2. a kind of rubber pad forming sheet metal component fatigue testing apparatus according to claim 1, characterized in that the rectangular fixture
Lower surface is equipped with several threaded holes in the vertical direction, and the telescopic clamp is equipped with several threaded holes in a lateral direction.
3. a kind of rubber pad forming sheet metal component fatigue testing apparatus according to claim 1 or 2, characterized in that described to stretch
The side that contracting fixture is bonded with sheet metal component to be measured is in facing directly or concave surface.
4. a kind of rubber pad forming sheet metal component fatigue testing apparatus according to claim 1, characterized in that the transmission shaft one
End is connect with motor, and the transmission shaft other end connects a lap count.
5. a kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus, characterized in that by sheet metal component side to be measured and side
Clamp is bolted, and the sheet metal component other side to be measured is bolted with telescopic clamp, and in bolt and metal plate to be measured
Pad a upper setting-up piece in golden part junction.
6. a kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus according to claim 5, characterized in that will
Eccentric wheel rotation is turned around, and the reading of pressure sensor is read, by adjusting the stiffness factor of spring, adjust the size of loading force with
Meet the requirement of testing fatigue power.
7. a kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus according to claim 5, characterized in that logical
Toning rectification becomes the size of eccentric wheel, adjusts the size of loading force.
8. a kind of testing method of rubber pad forming sheet metal component fatigue testing apparatus according to claim 6 or 7, feature
It is to start motor, band movable eccentric wheel rotates, and eccentric wheel moves back and forth, and period alternate stress is acted on rectangular fixture
On, period alternate stress is applied on sheet metal component to be measured by rectangular fixture, after fatigue fracture occurs for sheet metal component to be measured, closes electricity
Motivation reads the circle number that lap count is shown, the fatigue life of sheet metal component as to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366710.4A CN108956344B (en) | 2018-04-23 | 2018-04-23 | Rubber forming sheet metal part fatigue test device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366710.4A CN108956344B (en) | 2018-04-23 | 2018-04-23 | Rubber forming sheet metal part fatigue test device and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108956344A true CN108956344A (en) | 2018-12-07 |
| CN108956344B CN108956344B (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810366710.4A Active CN108956344B (en) | 2018-04-23 | 2018-04-23 | Rubber forming sheet metal part fatigue test device and test method |
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| Country | Link |
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| CN (1) | CN108956344B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU752155A2 (en) * | 1978-12-25 | 1980-07-30 | Томский инженерно-строительный институт | Impact-fatigue testing machine |
| CN102251096A (en) * | 2011-06-14 | 2011-11-23 | 西安飞机工业（集团）有限责任公司 | Sheet metal part vibratory stress relief method and device |
| CN202710426U (en) * | 2012-06-12 | 2013-01-30 | 三一重工股份有限公司 | Flexural fatigue testing machine |
| CN203184438U (en) * | 2013-04-10 | 2013-09-11 | 杭州电子科技大学 | Rubber molding convex flange multistep forming die |
| CN204575433U (en) * | 2015-02-03 | 2015-08-19 | 安徽机电职业技术学院 | A kind of test stationary fixture of plates of automobile class formation part |
| CN105115839A (en) * | 2015-09-18 | 2015-12-02 | 河海大学 | Fatigue machine equipped with transmission rotating arm |
| CN105699224A (en) * | 2016-04-08 | 2016-06-22 | 浙江大学城市学院 | Lumbar fatigue testing machine |
| CN206489012U (en) * | 2017-03-02 | 2017-09-12 | 上海市城市建设设计研究总院（集团）有限公司 | Simulate the electric device of vertical cyclic load |
-
2018
- 2018-04-23 CN CN201810366710.4A patent/CN108956344B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU752155A2 (en) * | 1978-12-25 | 1980-07-30 | Томский инженерно-строительный институт | Impact-fatigue testing machine |
| CN102251096A (en) * | 2011-06-14 | 2011-11-23 | 西安飞机工业（集团）有限责任公司 | Sheet metal part vibratory stress relief method and device |
| CN202710426U (en) * | 2012-06-12 | 2013-01-30 | 三一重工股份有限公司 | Flexural fatigue testing machine |
| CN203184438U (en) * | 2013-04-10 | 2013-09-11 | 杭州电子科技大学 | Rubber molding convex flange multistep forming die |
| CN204575433U (en) * | 2015-02-03 | 2015-08-19 | 安徽机电职业技术学院 | A kind of test stationary fixture of plates of automobile class formation part |
| CN105115839A (en) * | 2015-09-18 | 2015-12-02 | 河海大学 | Fatigue machine equipped with transmission rotating arm |
| CN105699224A (en) * | 2016-04-08 | 2016-06-22 | 浙江大学城市学院 | Lumbar fatigue testing machine |
| CN206489012U (en) * | 2017-03-02 | 2017-09-12 | 上海市城市建设设计研究总院（集团）有限公司 | Simulate the electric device of vertical cyclic load |
Non-Patent Citations (1)
| Title |
|---|
| 李明勇等: "口腔修复体疲劳寿命测试机的研制与标定（一）——仪器的研制", 《医疗卫生装备》 * |
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| CN108956344B (en) | 2020-07-28 |
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