CN110186791A - Surface hardness detection support device and the detection method of development machine hobboing cutter cutter hub - Google Patents
Surface hardness detection support device and the detection method of development machine hobboing cutter cutter hub Download PDFInfo
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- CN110186791A CN110186791A CN201910463443.7A CN201910463443A CN110186791A CN 110186791 A CN110186791 A CN 110186791A CN 201910463443 A CN201910463443 A CN 201910463443A CN 110186791 A CN110186791 A CN 110186791A
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- cutter hub
- support
- cutter
- handed screw
- development machine
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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
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
-
- 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
- G01N2203/0076—Hardness, compressibility or resistance to crushing
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0405—Features allowing alignment between specimen and chucks
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The surface hardness detection support device and detection method of development machine hobboing cutter cutter hub belong to development machine cutter hub hardness determination technical field, it is therefore intended that solve the problems, such as that detection error of the existing technology is big, accuracy is poor.Support device of the invention includes: the setting substantially symmetrical about its central axis of the cutter hub about hobboing cutter in intracorporal two support claws of knife, at least one face of support claw is cambered surface, cambered surface and the fitting of cutter hub inner surface；And the n group supporter between two support claws is set, n group supporter is generally aligned in the same plane, and place plane passes through the axis of cutter hub.Method of the invention adds support claw using cutter hub is interior, left-handed screw and right handed screw is added to withstand on support claw on cutter hub inner wall with two Double-ended nuts when measurement, to increase its wall thickness, it is detected again by Leeb Hardness Tester in cutter hub outer circumference surface support claw Support Position, the vertical coupled face in impact head impact direction of Leeb Hardness Tester, symmetrical two sides take multiple spot to measure respectively in cutter hub D1 outer circle B1 length, obtain the measurement result of two sides.
Description
Technical field
The invention belongs to development machine cutter hub hardness determination technical fields, and in particular to a kind of surface of development machine hobboing cutter cutter hub
Hardness determination support device and detection method.
Background technique
Hobboing cutter is generally made of components such as cutter ring, cutter hub, cutter shaft and bearings, and cutter hub is the key that rock tunnel(ling) machine construction
Part, as the hub of hobboing cutter, its exterior cutter ring, buried bearing and end-face seal ring, cutter ring are arrived by interference fit
On cutter hub excircle, cutter hub outer surface is its working face.When rock tunnel(ling) machine works, since its working environment is extremely severe,
In addition rock mechanism is extremely complicated, and the failure accidents such as cutter ring fatigue fracture, heel and toe wear is caused to occur again and again, therefore needs
Want cutter ring that there is high intensity, hardness and wear-resisting property.It requires matched cutter hub outer surface simultaneously also and must have and is higher
Hardness and preferable toughness, Industry code requirements be heat-treated rear surface hardness be 40HRC~45HRC.Because cutter hub is hollow thin
Wall construction element is at present to detect its circumference surface hardness using Leeb Hardness Tester to cutter hub outer surface hardness determination in industry.Richter scale
Hardness determination principle are as follows: with the impact body of definite quality under the effect of elasticity with certain speed impact specimen surface, existed with formed punch
Ratio calculation hardness number away from the rebound velocity at specimen surface 1mm and impact velocity.For the essence for guaranteeing Leeb Hardness Tester detection
Degree, sample should have enough dimension and weights, and measurement direction thickness is too small and test position is to overhang or thin-walled is without support,
The impact force of impact body will cause sample to generate vibration, mobile and deformation, to influence the rebound velocity of impact body, Jin Erying
Ring detection accuracy.The results showed the result of cutter hub same position hardness Leeb Hardness Tester detection and after cutting with desk-top hardness
Meter detection as a result, general 3~5 degree of difference, there are biggish mistakes with cutter hub actual hardness in existing cutter hub hardness detection method
Difference, testing result accuracy are poor.
Summary of the invention
It is an object of the invention to propose the surface hardness detection support device and detection of a kind of development machine hobboing cutter cutter hub
Method solves the problems, such as that detection error of the existing technology is big, accuracy is poor.
To achieve the above object, the surface hardness detection of development machine hobboing cutter cutter hub of the invention includes: with support device
The setting substantially symmetrical about its central axis of cutter hub about hobboing cutter in intracorporal two support claws of knife, the support claw at least one
Face is cambered surface, the cambered surface and cutter hub inner surface fitting；
And the n group supporter between two support claws is set, n group supporter is generally aligned in the same plane, place plane warp
Cross the axis of cutter hub.
Supporter described in every group includes:
A face opposite with cambered surface cooperates branch in left-handed screw, described left-handed screw one end and a support claw
Support；
Right handed screw, described right handed screw one end cooperate branch with a face opposite with cambered surface in support claw described in another
Support；
And Double-ended nut, the Double-ended nut both ends connect with left-handed screw and the other end screw thread of right handed screw respectively
It connects, rotation Double-ended nut makes left-handed screw and right handed screw relative motion or reverse motions.
Arc groove, the arc convex cooperation of the arc groove and cutter hub inner surface are provided in the cambered surface of the support claw.
The support claw and the opposite face of the cambered surface are plane, are provided with location hole, the left-handed spiral shell in the plane
One end and location hole cooperation of bar or right handed screw.
The material of the support claw and the material of cutter hub are identical.
The value of the n is 2.
The detection method of surface hardness detection support device based on above-mentioned development machine hobboing cutter cutter hub includes following step
It is rapid:
Support device: being mounted on the inner surface of cutter hub to be measured by step 1, makes the arc groove of support claw and the arc of cutter hub
Shape male cooperation, rotation Double-ended nut make left-handed screw and right handed screw move round about hold out against support claw realization to cutter hub
Support；
Step 2: applying couplant in the mating surface of support claw and the cutter hub, is being coated with cutter hub and support claw vertically
Become the rigidity entirety for bearing pressure on the direction of the coupling surface of couplant；
Step 3: by angle grinder polishing cutter hub outer surface, surface scale is removed；
Step 4: it is detected by Leeb Hardness Tester in cutter hub outer circumference surface support claw Support Position, Leeb Hardness Tester
The vertical coupled face in impact head impact direction, symmetrical two sides take multiple spot to measure respectively in cutter hub D1 outer circle B1 length,
Obtain the measurement result of two sides；
Step 5: the measurement result that step 4 kind obtains is averaged, and as cutter hub Rockwell hardness number, completes measurement.
Couplant described in step 2 is vaseline oil.
Multiple spot described in step 4 is at least at 3 points.
Multiple spot described in step 4 is 3 points.
The invention has the benefit that surface hardness detection support device and the inspection of development machine hobboing cutter cutter hub of the invention
Survey method, which is used, increases the method for support claw in cutter hub inner radius, and it is hard that cutter hub outer work face is directly detected with Leeb Hardness Tester
Degree overcomes the drawbacks of hollow thin-wall part influences the rebound velocity of impact body using Leeb Hardness Tester, so that the hardness number of measurement
It is more true, scientifically reflect cutter hub true hardness, structure is simple, and it is easy to operate, effectively reduce detection error.
Detailed description of the invention
Fig. 1 is structure main view when the surface hardness detection of development machine hobboing cutter cutter hub of the invention removes receipts state with support device
Figure；
Fig. 2 is structure left view when the surface hardness detection of development machine hobboing cutter cutter hub of the invention removes receipts state with support device
Cross-sectional view；
Structure main view when Fig. 3 is the surface hardness detection support device test mode of development machine hobboing cutter cutter hub of the invention
Figure；
Structure left view when Fig. 4 is the surface hardness detection support device test mode of development machine hobboing cutter cutter hub of the invention
Cross-sectional view；
Fig. 5 is support claw structural representation in the surface hardness detection support device of development machine hobboing cutter cutter hub of the invention
Figure；
Fig. 6 is Double-ended nut structural representation in the surface hardness detection support device of development machine hobboing cutter cutter hub of the invention
Figure；
Fig. 7 is left-handed screw structural representation in the surface hardness detection support device of development machine hobboing cutter cutter hub of the invention
Figure；
Fig. 8 is the structural front view of cutter hub to be measured；
Fig. 9 is the structure left view of cutter hub to be measured；
Figure 10 is cutter hub bilateral hardness determination figure to be measured；
Wherein: 1, cutter hub, 101, arc convex, 2, support claw, 201, cambered surface, 202, arc groove, 203, plane, 204, fixed
Position hole, 3, left-handed screw, 4, right handed screw, 5, Double-ended nut.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Referring to attached drawing 1- attached drawing 7, the surface hardness detection of development machine hobboing cutter cutter hub 1 of the invention includes: with support device
Two be arranged in cutter hub 1 the support claw 2 substantially symmetrical about its central axis of cutter hub 1 about hobboing cutter, the support claw 2 is at least
One face is cambered surface 201, the cambered surface 201 and the fitting of 1 inner surface of the cutter hub；
And the n group supporter between two support claws 2 is set, n group supporter is generally aligned in the same plane 203, and place is flat
The axis of cutter hub 1 is passed through in face 203.
Supporter described in every group includes:
Match in left-handed screw 3, described 3 one end of a left-handed screw and a support claw 2 and opposite face of cambered surface 201
Close support；
In right handed screw 4, described 4 one end of right handed screw and another a described support claw 2 and opposite face of cambered surface 201
Cooperation support；
And Double-ended nut 5,5 both ends of the Double-ended nut other end spiral shell with left-handed screw 3 and right handed screw 4 respectively
Line connection, rotation Double-ended nut 5 make left-handed screw 3 and 4 relative motion of right handed screw or reverse motions.
Arc groove 202, the arc of 1 inner surface of the arc groove 202 and cutter hub are provided in the cambered surface 201 of the support claw 2
Shape protrusion 101 cooperates, and the arc convex 101 is the structure feature of cutter hub 1 itself.
The support claw 2 and the opposite face of the cambered surface 201 are plane 203, are provided with location hole in the plane 203
204, one end and the location hole 204 of the left-handed screw 3 or right handed screw 4 cooperate.
The material of the support claw 2 is identical with the material of cutter hub 1.
The value of the n is 2.
Referring to attached drawing 8- attached drawing 10, the surface hardness detection support device based on above-mentioned development machine hobboing cutter cutter hub 1
Detection method includes the following steps:
Step 1: it is mounted on the inner surface of cutter hub 1 to be measured when being in by support device and remove receipts state, makes support claw 2
The cooperation of the arc convex 101 of arc groove 202 and cutter hub 1, rotation Double-ended nut 5 make left-handed screw 3 and right handed screw 4 to Xiang Fanfang
Support of the realization of support claw 2 to cutter hub 1 is held out against to movement；
Step 2: applying couplant in the mating surface of support claw 2 and the cutter hub 1, makes cutter hub 1 and support claw 2 vertical
Being coated on the direction of the coupling surface of couplant becomes the rigidity entirety for bearing pressure；
Step 3: by angle grinder polishing 1 outer surface of cutter hub, surface scale is removed；
Step 4: pressing " parameter setting " key on Leeb Hardness Tester, " unit conversion " choosing " HRC " mode is selected, by inner
Family name's hardometer is detected in 1 outer circumference surface support claw of cutter hub, 2 Support Position, and the impact head impact direction of Leeb Hardness Tester is vertical
Coupling surface, symmetrical two sides take measure at 3 points respectively in cutter hub 1D1 outer circle B1 length, and it is hard to obtain 1 surface of two sides cutter hub
The measurement result of degree；
Step 5: the measurement result that step 4 kind obtains is averaged, and as 1 Rockwell hardness number of cutter hub, completes measurement.
Couplant described in step 2 is vaseline oil.
1 entirety of cutter hub is in axial direction cut into 6 equal portions, surfaces externally and internally is milled to flat, to measure by Leeb Hardness Tester point
Correspondence marks.Mark point is detected and is recorded on metal Rockwell apparatus respectively.The numerical value recorded and Richter scale are hard
The value of degree meter detection compares, experiment proves that, error is less than 0.5 degree at same position.
The present invention is suitable for the hardness determination of 1 wall thickness of cutter hub/internal diameter≤0.2 cutter hub 1, and the present invention adds using in cutter hub 1
Support claw 2 is withstood on support claw 2 on 1 inner wall of cutter hub with two Double-ended nuts 5 plus left-handed screw 3 and right handed screw 4 when measurement,
To increase its wall thickness, solves 1 thin-walled hollow structure of cutter hub, reduce Leeb Hardness Tester detection error, Leeb Hardness Tester can be used
Measurement result is directly as actual hardness value, and for the method without amendment, the excircle detection for cutter hub 1 in industry provides one kind
Quickly, convenient, precise and high efficiency detection method and device.
Claims (10)
1. the surface hardness detection support device of development machine hobboing cutter cutter hub characterized by comprising
Two support claws (2) of the setting substantially symmetrical about its central axis of cutter hub (1) about hobboing cutter in cutter hub (1), the support claw (2)
At least one face is cambered surface (201), the cambered surface (201) and the fitting of the cutter hub (1) inner surface；
And the n group supporter being arranged between two support claws (2), n group supporter are generally aligned in the same plane (203), place is flat
The axis of cutter hub (1) is passed through in face (203).
2. the surface hardness detection support device of development machine hobboing cutter cutter hub according to claim 1, which is characterized in that every
Organizing the supporter includes:
Left-handed screw (3), described left-handed screw (3) one end and a support claw (2) neutralize cambered surface (201) opposite one
Face cooperation support；
Right handed screw (4), described right handed screw (4) one end and another described support claw (2) neutralize cambered surface (201) opposite one
A face cooperation support；
And Double-ended nut (5), Double-ended nut (5) both ends are another with left-handed screw (3) and right handed screw (4) respectively
End is threadedly coupled, and rotation Double-ended nut (5) makes left-handed screw (3) and right handed screw (4) relative motion or reverse motions.
3. the surface hardness detection support device of development machine hobboing cutter cutter hub according to claim 1 or 2, feature exist
In being provided with arc groove (202) in the cambered surface (201) of the support claw (2), the arc groove (202) and cutter hub (1) inner surface
Arc convex (101) cooperation.
4. the surface hardness detection support device of development machine hobboing cutter cutter hub according to claim 2, which is characterized in that institute
It states support claw (2) and the opposite face of the cambered surface (201) is plane (203), be provided with location hole on the plane (203)
(204), one end and the location hole (204) cooperation of the left-handed screw (3) or right handed screw (4).
5. the surface hardness detection support device of development machine hobboing cutter cutter hub according to claim 1 or 2, feature exist
In the material of the support claw (2) is identical with the material of cutter hub (1).
6. the surface hardness detection support device of development machine hobboing cutter cutter hub according to claim 1 or 2, feature exist
In the value of the n is 2.
7. the surface hardness detection method of development machine hobboing cutter cutter hub, which comprises the following steps:
Support device: being mounted on the inner surface of cutter hub to be measured (1) by step 1, makes the arc groove (202) and knife of support claw (2)
The arc convex (101) of body (1) cooperates, and rotation Double-ended nut (5) makes left-handed screw (3) and right handed screw (4) round about
Movement holds out against support of support claw (2) realization to cutter hub (1)；
Step 2: applying couplant in the mating surface of support claw (2) and the cutter hub (1), and cutter hub (1) and support claw (2) is made to exist
Become the rigidity entirety for bearing pressure on the direction for the coupling surface for being vertically coated with couplant；
Step 3: by angle grinder polishing cutter hub (1) outer surface, surface scale is removed；
Step 4: it is detected by Leeb Hardness Tester in cutter hub (1) outer circumference surface support claw (2) Support Position, lee ' hardness
The vertical coupled face in impact head impact direction of meter, symmetrical two sides take multiple spot to carry out respectively in cutter hub (1) D1 outer circle B1 length
Measurement, obtains the measurement result of two sides；
Step 5: the measurement result that step 4 kind obtains is averaged, and as cutter hub (1) Rockwell hardness number, completes measurement.
8. detection method according to claim 7, which is characterized in that couplant described in step 2 is vaseline oil.
9. detection method according to claim 7, which is characterized in that multiple spot described in step 4 is at least at 3 points.
10. detection method according to claim 9, which is characterized in that multiple spot described in step 4 is 3 points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463443.7A CN110186791A (en) | 2019-05-30 | 2019-05-30 | Surface hardness detection support device and the detection method of development machine hobboing cutter cutter hub |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910463443.7A CN110186791A (en) | 2019-05-30 | 2019-05-30 | Surface hardness detection support device and the detection method of development machine hobboing cutter cutter hub |
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| CN110186791A true CN110186791A (en) | 2019-08-30 |
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| CN201910463443.7A Pending CN110186791A (en) | 2019-05-30 | 2019-05-30 | Surface hardness detection support device and the detection method of development machine hobboing cutter cutter hub |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525668A (en) * | 2020-12-30 | 2021-03-19 | 武汉建海精密型材发展有限公司 | On-spot nondestructive test device of sheet metal hardness |
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| RU2162216C1 (en) * | 1999-07-21 | 2001-01-20 | Волгоградская государственная архитектурно-строительная академия | Gear for strength test of brittle materials |
| CN202187431U (en) * | 2011-07-19 | 2012-04-11 | 浙江华铁建筑安全科技股份有限公司 | Adjustable support rod |
| CN102975033A (en) * | 2012-09-29 | 2013-03-20 | 江苏万盛铸造有限公司 | Tooling random support part |
| CN207764040U (en) * | 2018-01-12 | 2018-08-24 | 中国航发哈尔滨东安发动机有限公司 | Thin-wall bush hardness measurement clamp |
| CN108869975A (en) * | 2017-05-13 | 2018-11-23 | 银川上河图新技术研发有限公司 | screen height regulator |
| CN208399292U (en) * | 2018-07-24 | 2019-01-18 | 山东骏程金属科技有限公司 | Wheel hub hardness test device |
-
2019
- 2019-05-30 CN CN201910463443.7A patent/CN110186791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2162216C1 (en) * | 1999-07-21 | 2001-01-20 | Волгоградская государственная архитектурно-строительная академия | Gear for strength test of brittle materials |
| CN202187431U (en) * | 2011-07-19 | 2012-04-11 | 浙江华铁建筑安全科技股份有限公司 | Adjustable support rod |
| CN102975033A (en) * | 2012-09-29 | 2013-03-20 | 江苏万盛铸造有限公司 | Tooling random support part |
| CN108869975A (en) * | 2017-05-13 | 2018-11-23 | 银川上河图新技术研发有限公司 | screen height regulator |
| CN207764040U (en) * | 2018-01-12 | 2018-08-24 | 中国航发哈尔滨东安发动机有限公司 | Thin-wall bush hardness measurement clamp |
| CN208399292U (en) * | 2018-07-24 | 2019-01-18 | 山东骏程金属科技有限公司 | Wheel hub hardness test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525668A (en) * | 2020-12-30 | 2021-03-19 | 武汉建海精密型材发展有限公司 | On-spot nondestructive test device of sheet metal hardness |
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Application publication date: 20190830 |