CN206670536U - A kind of detection means of the blade of THR REV leaf grating - Google Patents
A kind of detection means of the blade of THR REV leaf grating Download PDFInfo
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- CN206670536U CN206670536U CN201621405980.4U CN201621405980U CN206670536U CN 206670536 U CN206670536 U CN 206670536U CN 201621405980 U CN201621405980 U CN 201621405980U CN 206670536 U CN206670536 U CN 206670536U
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Abstract
The utility model provides a kind of detection means of the blade of THR REV leaf grating, and the detection means includes：Leaf basin model and blade back model, the curved surface of the leaf basin model and the blade back model is consistent with the curved surface of blade, the top of leaf basin model and the top of blade back model are provided with the inserted block and slot to cooperate, the inserted block energy is along the insertion slot and moves in an insertion direction, to change the spacing between leaf basin model and blade back model, scale is provided with the inserted block for calculating the horizontal spacing between leaf basin model and blade back model.
Description
Technical field
It the utility model is related to the surface profile and thickness of leaf grating in aero-engine field, more particularly to a kind of THR REV
The detection means of degree.
Background technology
Cascade type THR REV is widely used in big Bypass Ratio Turbofan Engine in recent years, with conventional clampshell it is counter push away and
Counter push away of baffle plate type is compared, and cascade type THR REV is externally contained air-flow using special formed guide-ring and is oriented to, and has
Anti- the advantages that pushing away strong efficiency high, control gas flow capability, good reliability.
Leaf grating is the strength member in cascade type THR REV.In order to meet to guide the function turned back of air-flow, leaf grating is usual
There are multiple grids, each grid is surrounded by arc shaped blade and adjacent floor, and planform is complicated.Figure 1A and Figure 1B are refer to, is schemed
1A shows the stereogram of leaf grating, and Figure 1B shows the sectional view along dotted line in Figure 1A, and wherein arcuation blade 101 is leaf grating
Blade.
Compared with traditional aluminium alloy leaf grating, composite leaf grating has that number of parts is few, in light weight, specific strength is high, anti-
The advantages that impact property is good, it is applied to active service seating plane abroad at present, but because its manufacturing process is complicated, thickness deviation
Difficult point, the developments at home such as greatly, Forming Quality is unstable are still in the starting stage.
During now known composite leaf grating manufacturing technology tackling key problem, the surface profile and thickness of cascade blade are more difficult
Meet design requirement, thus be the emphasis of manufacturing inspection.The inspection generally use three-dimensional coordinates measurement method of surface profile, this method
It is accurate reliable, but checkability is low, is not suitable for batch production.The inspection of thickness usually relies on a kind of compass jaw type measurer, this
Kind measurer can adapt to the complex-curved of cascade blade, but Chang Yin lacks effectively positioning and causes measurement error big.
Utility model content
The purpose of this utility model is to provide a kind of detection of the blade of the THR REV leaf grating different from prior art
Device, it can quickly judge whether the surface profile of cascade blade is qualified, still further, it is also possible to the thickness of enough subsidiary blades
Degree.
According to above-mentioned purpose, the utility model provides a kind of detection means of the blade of THR REV leaf grating, and its feature exists
In the detection means includes：The curved surface and blade of leaf basin model and blade back model, the leaf basin model and the blade back model
Curved surface it is consistent, the top of leaf basin model and the top of blade back model are provided with the inserted block and slot to cooperate, the inserted block energy
Along inserting the slot and moving in an insertion direction, to change the spacing between leaf basin model and blade back model, the inserted block
On be provided with scale for calculating the horizontal spacing between leaf basin model and blade back model.
In one embodiment, the inserted block is arranged on the top of the leaf basin model, and the slot is arranged on the blade back
The top of model.
In one embodiment, the slot is arranged on the top of the leaf basin model, and the inserted block is arranged on the blade back
The top of model.
In one embodiment, the inserted block extends along the width of the leaf basin model and blade back model, extension length
Spend for the 25%~50% of blade back model width.
In one embodiment, corresponding screwed hole is respectively arranged with the leaf basin model and the blade back model, it is described
Detection means also includes fixed screw and fixing nut, and the fixed screw can pass through screwed hole and institute on the leaf basin model
The screwed hole on blade back model is stated, the fixing nut is used to screw the fixed screw, to realize leaf basin model and the leaf
Back of the body model position is relatively fixed.
In one embodiment, the surface of the leaf basin model is along a first direction and vertical with the first direction second
Direction is provided with some cell bodies, determines wherein the cell body on the cell body and the second direction on the first direction is formed in intersection
Position groove point, is offered and the one-to-one cell body of cell body on the leaf basin model on the blade back model so that corresponding fixed
Line between the groove point of position is spoon of blade normal.
In one embodiment, the first direction is leaf basin model width, and the second direction is grown for leaf basin model
Spend direction.
In one embodiment, it is located on the leaf basin model and the blade back model on first direction or in second direction
Cell body is continuous cell body.
In one embodiment, the maximum of the scale is more than tolerance on surface profile.
In one embodiment, the minimum value of the scale is tolerance under surface profile.
The utility model can quickly and easily detect leaf by leaf basin model and blade back model with target leaf grating profiling
Whether the surface profile of grid blade is qualified., being capable of further subsidiary by the setting of leaf basin model and blade back model cell body
The thickness of blade.
Brief description of the drawings
Figure 1A shows the stereogram of leaf grating；
Figure 1B shows the sectional view along dotted line in Figure 1A；
Fig. 2 shows the structural scheme of mechanism of the utility model detection means；
Fig. 3 A show leaf basin model from another angle；
Fig. 3 B show blade back model from another angle；
Fig. 4 shows the top view of the leaf basin model with inserted block；
Fig. 5 A and Fig. 5 B respectively illustrate the side view under detection means different conditions.
Embodiment
The utility model proposes a kind of detection means of the cascade blade different from prior art, in the face wheel of detection leaf grating
While exterior feature is spent, it is further able to detect the thickness of leaf grating, and it is more simpler than prior art, efficient.
Fig. 2 is refer to, Fig. 2 shows the structural scheme of mechanism of the utility model detection means.Device 20 includes leaf basin model
201 and blade back model 202, the curved surface of leaf basin model 201 and blade back model 202 is just the same, the curved surface one all with target blade
Cause.
Signified curved surface is consistent herein, refers to that the type face of curved surface is just the same, target blade and leaf basin model 201 or blade back
The surface of model 202 be able to should be bonded completely.
Because the curved surface of leaf basin model 201 and blade back model 202 is just the same, then when leaf basin model 201 and blade back sample
When plate 202 is along spacing difference on surface normal direction, can be reserved between leaf basin model 201 and blade back model 202 with
Leaf basin model 201 and the curved surface of blade back model 202 have the space of identical curved surface face type, and the space is that can accommodate blade to be measured
Space.
It refer to Fig. 3 A and Fig. 3 B, Fig. 3 A and show leaf basin model from another angle, Fig. 3 B are from another angle
Blade back model is shown, the inserted block 303 and slot 304 of mutual cooperation are additionally provided with leaf basin model 301 and blade back model 302.
Inserted block 303 is arranged on leaf basin model 301 in Fig. 3 A, slot 304 is arranged on blade back model 302.It is appreciated that also may be used
So that inserted block is arranged on blade back model, slot is arranged on leaf basin model.
Inserted block 303 can move along insertion slot 304 direction, to change the spacing between leaf basin model and blade back model.Between
Away from can change so that detection means can adapt on surface profile corresponding to different application scenarios under tolerance and surface profile
Tolerance.
Tolerance is the maximum facial contour angle value for the blade to be measured for referring to tolerance on surface profile, when the face of blade to be measured
When profile angle value is more than tolerance on surface profile, show that blade to be measured is overproof.
Under surface profile tolerance be refer to tolerance blade to be measured most under facial contour angle value, when the face of blade to be measured
When profile angle value is less than tolerance under surface profile, show that blade to be measured is overproof.
Fig. 4 is refer to, Fig. 4 shows the top view of the leaf basin model with inserted block, scale 402 is provided with inserted block 401,
For calculating the spacing between leaf basin model and blade back model.
In one embodiment, slot and inserted block are respectively arranged at the top of leaf basin model and blade back model.
Continuing with reference to Fig. 3 A and Fig. 3 B, in one embodiment, set respectively on leaf basin model 301 and blade back model 302
There are corresponding screwed hole 211 and screwed hole 212, device 20 also includes fixed screw and fixing nut, and fixed screw may pass through leaf
The screwed hole 212 on screwed hole 211 and blade back model 302 on basin model 301, and then be tightened screw by fixing nut,
To realize being relatively fixed for leaf basin model 301 and the position of blade back model 302.
In one embodiment, the inserted block is distributed along leaf basin model width, and length is leaf basin model width
25%~50%.The purpose being distributed along leaf basin model width is to limit turn of leaf basin model and blade back model each other
It is dynamic, and the purpose for limiting inserted block length is that material can be saved, and reduces processing cost.
The method for examining blade surface profile is as follows：
Leaf basin model is abutted into blade and blade basin to be measured, blade and blade basin refers to the concave side surface of blade；
The slot of blade back model is inserted to the inserted block of leaf basin model so that blade back model abuts cascade blade blade back to be measured,
Blade blade back is the convex side surface of blade；
Fixed screw and nut are installed；
Read the reading on scale, you can draw test result.
Specific Fig. 5 A and Fig. 5 B, Fig. 5 A and Fig. 5 B of refer to respectively illustrates side view under detection means different conditions.
Inserted block high scale value is observed, if now blade back model position exceedes maximum surface profile scale value, as shown in Figure 5A, is illustrated to be measured
Cascade blade surface profile is overproof.If now blade back model is in contact (i.e. blade back model arrival minimal face wheel with blade back model
Wide degree position), as shown in Figure 5 B, but cascade blade blade back to be measured is not abutted yet, illustrate that cascade blade surface profile to be measured is overproof.
The utility model, can be with the thickness of pilot blade while surface profile is tested.
In one embodiment, leaf basin specimen surface is along a first direction and the second direction vertical with first direction is provided with groove
The intersecting point of body, wherein first direction cell body and second direction cell body is locating slot point, is offered on blade back model and leaf basin
The corresponding cell body of model cell body so that the line between corresponding locating slot point is spoon of blade normal.
The purpose for opening up cell body be in order to obtain position cell body, find corresponding point in blade and blade basin and blade and blade back,
Mark is performed, is then the thickness of measurable blade by survey tool.
In one embodiment, the inherently point of the cell body on leaf basin model and blade back model, without continuous wire
Cell body.
It is appreciated that first direction and second direction can be any directions in leaf basin model and blade back specimen surface
On.
In one embodiment, first direction is leaf basin model width, and second direction is leaf basin model length direction.
In one embodiment, along a first direction or the cell body of second direction is continuous cell body, the company in 4 is referred to
Continuous cell body 411, the intersection point of continuous cell body 411 and the discontinuous cell body 412 of other direction form locating slot point 413.
First direction and the cell body of second direction can not be continuous cell body simultaneously, such that detection means separates.
In one embodiment, the groove on leaf basin model and blade back model on leaf basin model and blade back model width
Body is continuous cell body.
In one embodiment, the groove on leaf basin model and blade back model on leaf basin model and blade back model length direction
Body is continuous cell body.
When being continuous cell body along the cell body on leaf basin model and blade back model length direction, the succeeding vat can be passed through
Whether body identifies the surface curve of blade, then met the requirements by the surface curve that Other Instruments is detectable blade.
The detection method of vane thickness is as follows：
Leaf basin model is abutted into blade and blade basin to be measured；
The slot of blade back model is inserted to the inserted block of leaf basin model so that blade back model abuts cascade blade blade back to be measured；
Fixed screw and nut are installed；
Made marks, marked one-to-one in locating slot point corresponding to blade and blade basin and the blade and blade back of the body respectively with marker pen
Inspection of Thickness point；
The chuck of thickness measure measurer is respectively aligned to certification label point, reading corresponding to blade and blade basin and blade and blade back
Complete thickness measure.
Offer is for so that any person skilled in the art all can make or use this public affairs to being previously described for the disclosure
Open.Various modifications to the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to spirit or scope of other variants without departing from the disclosure.Thus, the disclosure is not intended to be limited
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (10)
1. a kind of detection means of the blade of THR REV leaf grating, it is characterised in that the detection means includes：
The curved surface of leaf basin model and blade back model, the leaf basin model and the blade back model is consistent with the curved surface of target blade,
The top of leaf basin model and the top of blade back model are provided with the inserted block and slot to cooperate, and the inserted block can be inserted along insertion is described
Groove is simultaneously moved in an insertion direction, and to change the spacing between leaf basin model and blade back model, scale is provided with the inserted block
For calculating the horizontal spacing between leaf basin model and blade back model.
2. detection means as claimed in claim 1, it is characterised in that the inserted block is arranged on the top of the leaf basin model,
The slot is arranged on the top of the blade back model.
3. detection means as claimed in claim 1, it is characterised in that the slot is arranged on the top of the leaf basin model,
The inserted block is arranged on the top of the blade back model.
4. detection means as claimed in claim 2 or claim 3, it is characterised in that the inserted block is along the leaf basin model and blade back
The width extension of model, development length are the 25%~50% of blade back model width.
5. detection means as claimed in claim 1, it is characterised in that set respectively on the leaf basin model and the blade back model
Corresponding screwed hole is equipped with, the detection means also includes fixed screw and fixing nut, and the fixed screw can pass through described
The screwed hole on screwed hole and the blade back model on leaf basin model, the fixing nut are used to screw the fixed screw,
To realize being relatively fixed for leaf basin model and the blade back model position.
6. detection means as claimed in claim 1, it is characterised in that the surface of the leaf basin model along a first direction and with
The vertical second direction of the first direction is provided with some cell bodies, wherein cell body and the second direction on the first direction
On cell body intersection formed locating slot point,
Offered on the blade back model and the one-to-one cell body of cell body on the leaf basin model so that corresponding locating slot
Line between point is spoon of blade normal.
7. detection means as claimed in claim 6, it is characterised in that the first direction is leaf basin model width, institute
It is leaf basin model length direction to state second direction.
8. detection means as claimed in claim 7, it is characterised in that positioned at the on the leaf basin model and the blade back model
Cell body on one direction or in second direction is continuous cell body.
9. detection means as claimed in claim 1, it is characterised in that the maximum of the scale is more than public on surface profile
Difference.
10. detection means as claimed in claim 1, it is characterised in that the minimum value of the scale is tolerance under surface profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621405980.4U CN206670536U (en) | 2016-12-20 | 2016-12-20 | A kind of detection means of the blade of THR REV leaf grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621405980.4U CN206670536U (en) | 2016-12-20 | 2016-12-20 | A kind of detection means of the blade of THR REV leaf grating |
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| Publication Number | Publication Date |
|---|---|
| CN206670536U true CN206670536U (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621405980.4U Active CN206670536U (en) | 2016-12-20 | 2016-12-20 | A kind of detection means of the blade of THR REV leaf grating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881026A (en) * | 2019-11-13 | 2021-06-01 | 中国航发商用航空发动机有限责任公司 | Back-thrust blade cascade for blade density adjustable test |
-
2016
- 2016-12-20 CN CN201621405980.4U patent/CN206670536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112881026A (en) * | 2019-11-13 | 2021-06-01 | 中国航发商用航空发动机有限责任公司 | Back-thrust blade cascade for blade density adjustable test |
| CN112881026B (en) * | 2019-11-13 | 2022-11-15 | 中国航发商用航空发动机有限责任公司 | Back-thrust blade cascade for blade density adjustable test |
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