CN205940921U - Wind vanes vibration test frock clamp - Google Patents
Wind vanes vibration test frock clamp Download PDFInfo
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- CN205940921U CN205940921U CN201620877081.8U CN201620877081U CN205940921U CN 205940921 U CN205940921 U CN 205940921U CN 201620877081 U CN201620877081 U CN 201620877081U CN 205940921 U CN205940921 U CN 205940921U
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- frock clamp
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- fan blade
- groove
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Abstract
The utility model discloses a wind vanes vibration test frock clamp belongs to aeroengine vibration fatigue test technical field. The anchor clamps bodies is including chuck and chassis, chuck and chassis integrated into one piece, and chuck one side is provided with tongue -and -groove and tenon tooth, and the kicking block passes through the locating pin location to be installed in the tongue -and -groove, and be located tongue -and -groove relative position and locate to set up a plurality of puller bolts, tight work piece is pressed from both sides to distance between tight bolt regulation kicking block in top and the tenon tooth, the anchor clamps body is installed on the experiment platform through the chassis. The utility model provides an experimental frock clamp of blade vibration test vibration deviation problem, the low problem of the experimental frock clamp excitation power of blade vibration, effectively the volume of reducing the design work improves the design success rate, improves frock clamp excitation efficiency simultaneously, improves strong wind vanes vibration test ability.
Description
Technical field
This utility model belongs to aero-engine vibration fatigue test technical field and in particular to a kind of fan blade is vibrated
Test tool fixture.
Background technology
Blade is one of main parts size in aero-engine.Due to large number of, working environment complexity, subject relatively
High centrifugal load, airload, thermic load and due to vibrating the stress alternation causing, always in electromotor, fault rate is relatively
One of high component.Fan blade is due to its quality weight, blade length, foremost etc. factor exists to be in rotor arrangement, causes and grinds
Study carefully its blade vibration characteristic and fatigue behaviour be particularly important, thus predict blade it may happen that vibration problem, prevent blade
Vibration fault occur.And blade vibration test tool jig Design is then requisite link in vibration test, due to work
Clamps design along with production cycle and rework rate problem, lead to the quality of Fixture designing to directly affect the test period,
Even related scientific research task can be affected.
For fan blade (single tenon tooth structure blade) testpieces, top-closed structure clamp effect is significantly better than compression type and presss from both sides
Tool, so single tenon tooth structure blade fixture majority is for holding out against structure.Top-closed structure fixture is mainly by clamp body, jacking block, puller bolt
With alignment pin composition.Although mentality of designing is clearly, big fan blade frock jig Design experience is still substantially not enough, and due to
Big fan blade vibration test is less, also has no way of using for reference domestic other design, causes big fan blade frock fixture to set
Fixture vibration measuring frequency departure, exciting power low problem occur after meter, frock clamp need to be added work and even need to redesign ability
Complete to test, have a strong impact on test progress.
Utility model content
The purpose of this utility model：In order to solve the above problems, the utility model proposes a kind of vibration examination of fan blade
Test frock clamp, employ the uniform pretightning force of many bolts holds out against mode, overall processing and U-shaped mounting means, reduces fixture
Vibration measuring frequency departure, improves fixture exciting power.
The technical solution of the utility model：A kind of fan blade vibration test frock clamp, including：Clamp body, hold out against spiral shell
Bolt, alignment pin and jacking block；
Clamp body includes chuck and chassis, and chuck and chassis are integrally formed, and chuck side is provided with tongue-and-groove and tenon tooth, jacking block
By alignment pin location and installation in tongue-and-groove, multiple puller bolts are set positioned at tongue-and-groove relative position, described puller bolt is adjusted
The distance between section jacking block and tenon tooth, clamp workpiece；Clamp body is arranged on experiment porch by chassis.
Preferably, described tongue-and-groove has angle of inclination, and its angle of inclination can make workpiece level clamp, error ± 5 ° it
Between.
Preferably, described chassis is evenly distributed and is provided with U-type groove.
Preferably, described chassis is uniformly arranged installing hole along center, and described installation bore portion is arranged between U-type groove.
Preferably, the height of described undersurface of bottom disc to center of collet is at least 70mm.
Preferably, the mass ratio of described frock clamp and frock testpieces
Preferably, making material 45 steel that described frock clamp adopts.
Preferably, the thickness of described chuck will can make the length of thread engagement (LE) of puller bolt in more than 40mm.
The beneficial effects of the utility model：It is effectively reduced design efforts would, improves design success rate, improve frock simultaneously
Fixture exciting efficiency, improves big fan blade vibration test capability.
Brief description
Fig. 1 is a kind of structural representation of a preferred embodiment of this utility model fan blade vibration test frock clamp
Figure；
Fig. 2 is that a kind of sectional structure of a preferred embodiment of this utility model fan blade vibration test frock clamp shows
It is intended to；
Fig. 3 is the chassis schematic diagram of embodiment illustrated in fig. 1；
Fig. 4 is the chuck schematic diagram of embodiment illustrated in fig. 1；
Wherein, 1- clamp body, 2- puller bolt, 3- alignment pin, 4- jacking block, 5- chuck, 6- chassis, 7- tongue-and-groove, 8- tenon tooth,
9-U type groove, 10- installing hole.
Specific embodiment
For making purpose, technical scheme and advantage that this utility model is implemented clearer, below in conjunction with this utility model
Accompanying drawing in embodiment, is further described in more detail to the technical scheme in this utility model embodiment.In the accompanying drawings, ad initio
To the element that same or similar label represents same or similar element or has same or like function eventually.Described reality
Applying example is a part of embodiment of this utility model, rather than whole embodiments.Embodiment below with reference to Description of Drawings
It is exemplary it is intended to be used for explaining this utility model, and it is not intended that to restriction of the present utility model.New based on this practicality
Embodiment in type, the every other enforcement that those of ordinary skill in the art are obtained under the premise of not making creative work
Example, broadly falls into the scope of this utility model protection.Below in conjunction with the accompanying drawings embodiment of the present utility model is described in detail.
In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", "front", "rear",
The orientation of instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " or position relationship are based on accompanying drawing institute
The orientation showing or position relationship, are for only for ease of description this utility model and simplify description, rather than instruction or hint indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
The restriction of novel protected scope.
Below in conjunction with the accompanying drawings embodiment of the present utility model is described in detail, refer to Fig. 1 to Fig. 4.
Due to strong wind fan leaf because its blade is wider, quality weight, and some big fan leaf assay part blades are extremely long,
Test demand amplitude is big, more difficult exciting in vibration test, and according to the fan frock clamp of the design of design experiences before, frequency is surveyed
Examination precision is low, and fixture work efficiency deficiency is it is impossible to complete big fan blade fatigue test.
For solving blade vibration test tool fixture vibration measuring offset issue, Control experiment part and fixture mass ratio.Increasing is shaken
Dynamic platform movable part (fixture) quality, improves static frequency of blade test by reducing testpieces with the method for fixture mass ratio μ
Accuracy, when mass ratio reachesWhen, the error of the controllable frequency recording and the true natural frequency of vibration of blade 7% with
Interior, but the restriction of this also vibrated maximum load.
For solve the problems, such as blade vibration test tool fixture exciting power low it is ensured that what testpieces was connected with excitation system
Rigidity, can improve the transmission efficiency of exciting force, also can guarantee that the test accuracy of frequency measurement and the stability of system simultaneously.Pass through
Two aspects improve system and connect rigidly below, the method first passing through the uniform jacking block pressure of many bolts (N >=3), increase test
The connection rigidity at part and fixture tenon tooth position；Secondly fixture can adopt circular base plate, U-type groove, increase fastening bolt to increase folder
The connection rigidity of tool and vibration table surface.Increase system connect rigidity can make frock clamp exciting power improve 100%～
200%.
According to the requirement of above technical scheme, provide a kind of fan blade vibration test frock clamp, including：Clamp body 1,
Puller bolt 2, alignment pin 3 and jacking block 4；
Clamp body generally selects 45 steel to make, and major advantage can be good for machine additivity, after heat treatment has at normal temperatures enough
Hardness and toughness, be difficult brittle failure；Clamp body 1 includes chuck 5 and chassis 6, and chuck 5 and chassis 6 are integrally formed, and is added using overall
Work, it is to avoid using welding procedure, increased the integral rigidity of clamp body.
Chuck 5 side is provided with tongue-and-groove 7 and tenon tooth 8, and tongue-and-groove 7 has angle of inclination it is ensured that angle of inclination keeps
Workpiece level clamps.
Jacking block 4 passes through alignment pin 3 location and installation in tongue-and-groove 7, arranges multiple puller bolts positioned at tongue-and-groove 7 relative position
2, described puller bolt 2 adjusts the distance between jacking block 4 and tenon tooth 8, clamps workpiece；
Chassis 6 is evenly distributed and is provided with U-type groove 9, and chassis 6 is uniformly arranged installing hole 10, described installing hole 10 along center
Part is arranged between U-type groove 9, and clamp body chassis adopts circular base plate to coordinate U-type groove form, is connected with vibration table and need to use two
Fix by totally 16 bolts for circle, and can suitably increase bolt mounting holes, increases the connection rigidity on fixture chassis 6 and vibration table surface.
Clamp body chuck 5 center height is at least higher than installed surface (undersurface of bottom disc) 70mm guarantee blade clamping
Rear amplitude reads and facilitates feasible, and the size of chuck 5 decides (for ensureing that fixture quality can suitably increase) depending mainly on blade dimensions,
Chuck thickness will ensure the length of thread engagement (LE) of puller bolt in more than 40mm.It is connected just with frock clamp for guarantee fan blade
Property, can adopt the uniform pressure of many bolts holds out against mode, and the technical program holds out against by the way of 3 puller bolts 2 are uniform
Jacking block 4.
The size of the clamp body tongue-and-groove 7 mainly rotor disk tongue-and-groove size design according to joined together by test fan blade, crucial
Bite size, tolerance and design requirement are equivalently-sized with rotor disk tongue-and-groove, and tongue-and-groove thickness will set according to the thickness choosing jacking block 4
Meter, jacking block thickness can select in 10mm～20mm according to pilot blade size, and the length of jacking block 4 and profile are by testpieces tenon shape
Shape determines.The tilt angle of tongue-and-groove 7 will so that pilot blade blade convergence horizontal direction is defined, gap can positive and negative 5 degree it
Between.
This utility model solves blade vibration test tool fixture vibration measuring offset issue, blade vibration test tool fixture
The low problem of exciting power；It is effectively reduced design efforts would, improves design success rate, improve frock clamp exciting effect simultaneously
Rate, improves big fan blade vibration test capability.
Last it is to be noted that：Above example is only in order to illustrating the technical solution of the utility model, rather than it is limited
System.Although being described in detail to this utility model with reference to the foregoing embodiments, those of ordinary skill in the art should manage
Solution：It still can be modified to the technical scheme described in foregoing embodiments, or wherein some technical characteristics are entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from each embodiment of this utility model
The spirit and scope of technical scheme.
Claims (8)
1. a kind of fan blade vibration test frock clamp is it is characterised in that include：Clamp body (1), puller bolt (2), positioning
Pin (3) and jacking block (4)；
Clamp body (1) includes chuck (5) and chassis (6), and chuck (5) and chassis (6) are integrally formed, and chuck (5) side is provided with
Tongue-and-groove (7) and tenon tooth (8), jacking block (4) passes through alignment pin (3) location and installation in tongue-and-groove (7), positioned at tongue-and-groove (7) relative position
Place arranges multiple puller bolts (2), and described puller bolt (2) adjusts the distance between jacking block (4) and tenon tooth (8), clamps workpiece；
Clamp body (1) is arranged on experiment porch by chassis (6).
2. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that：Described tongue-and-groove (7)
There is angle of inclination, its angle of inclination can make workpiece level clamp, and error is between ± 5 °.
3. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that:Described chassis (6)
It is evenly distributed and be provided with U-type groove (9).
4. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that：Described chassis (6)
It is uniformly arranged installing hole (10) along center, described installing hole (10) is partly arranged between U-type groove (9).
5. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that:Described chassis (6)
The height at bottom surface to chuck (5) center is at least 70mm.
6. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that：Described frock clamp
Mass ratio with frock testpieces
7. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that：Described frock clamp
Using making material be 45 steel.
8. a kind of fan blade vibration test frock clamp according to claim 1 it is characterised in that：Described chuck (5)
Thickness to can make the length of thread engagement (LE) of puller bolt (2) in more than 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877081.8U CN205940921U (en) | 2016-08-15 | 2016-08-15 | Wind vanes vibration test frock clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620877081.8U CN205940921U (en) | 2016-08-15 | 2016-08-15 | Wind vanes vibration test frock clamp |
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| Publication Number | Publication Date |
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| CN205940921U true CN205940921U (en) | 2017-02-08 |
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ID=57921101
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620877081.8U Active CN205940921U (en) | 2016-08-15 | 2016-08-15 | Wind vanes vibration test frock clamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393818A (en) * | 2018-01-16 | 2018-08-14 | 中国航发贵州黎阳航空动力有限公司 | A kind of compressor arc tooth vibration of rotor blades fatigue test clamper |
| CN109029889A (en) * | 2018-08-27 | 2018-12-18 | 烟台大学 | A kind of the vibration-testing experimental rig and its test method of blade of aviation engine |
| CN109366403A (en) * | 2018-12-10 | 2019-02-22 | 无锡透平叶片有限公司 | Device for Bacterial type blade simulation assembly |
| CN115508029A (en) * | 2021-06-07 | 2022-12-23 | 惠阳航空螺旋桨有限责任公司 | Vibration test tool clamp |
-
2016
- 2016-08-15 CN CN201620877081.8U patent/CN205940921U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393818A (en) * | 2018-01-16 | 2018-08-14 | 中国航发贵州黎阳航空动力有限公司 | A kind of compressor arc tooth vibration of rotor blades fatigue test clamper |
| CN109029889A (en) * | 2018-08-27 | 2018-12-18 | 烟台大学 | A kind of the vibration-testing experimental rig and its test method of blade of aviation engine |
| CN109029889B (en) * | 2018-08-27 | 2023-09-26 | 烟台大学 | Vibration test device and method for aero-engine blade |
| CN109366403A (en) * | 2018-12-10 | 2019-02-22 | 无锡透平叶片有限公司 | Device for Bacterial type blade simulation assembly |
| CN109366403B (en) * | 2018-12-10 | 2023-09-22 | 无锡透平叶片有限公司 | Device for simulating assembly of fungus type blade |
| CN115508029A (en) * | 2021-06-07 | 2022-12-23 | 惠阳航空螺旋桨有限责任公司 | Vibration test tool clamp |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |