CN210269401U - Special clamp for testing fatigue strength of blade of blisk - Google Patents
Special clamp for testing fatigue strength of blade of blisk Download PDFInfo
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- CN210269401U CN210269401U CN201920842415.1U CN201920842415U CN210269401U CN 210269401 U CN210269401 U CN 210269401U CN 201920842415 U CN201920842415 U CN 201920842415U CN 210269401 U CN210269401 U CN 210269401U
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- blisk
- blade
- fatigue strength
- centre gripping
- web
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Abstract
The utility model discloses a special fixture for blade fatigue strength test of blisk, anchor clamps include axle center, web and centre gripping arm, and are a plurality of the web evenly arranges, every along the circumferencial direction in axle center the one end and the axle center fixed connection of web, the other end set up the centre gripping arm perpendicularly, treat the blisk cover of centre gripping and locate the circular outside that a plurality of centre gripping arms are constituteed. The utility model provides a special fixture for blade fatigue strength test of blisk, can carry out the centre gripping with the blisk fixed, when carrying out the blade fatigue strength test of blisk, provide stable fixed clamping strength, and, adopt this special fixture to carry out the fatigue strength test method, compared with the fatigue test method of traditional cutting blade, the advantage lies in the experimental boundary condition of blisk blade and more is close actual use condition, do not destroy the blisk, reduce because the experimental data error that the blade cutting plane brought, the test cycle shortens, experimental expense reduces.
Description
Technical Field
The utility model relates to a mechanical vibration test technical field especially relates to a special fixture that is used for blade fatigue strength test of blisk.
Background
Traditional blade fatigue limit test cuts into the monolithic blade with the blade from the blisk through machining's mode, fixes two parallel surfaces of single blade root on anchor clamps, and the blade body is unsettled, through the fatigue strength of vibration test blade. For a blisk, the traditional blade fatigue testing method enables the blisk to be damaged, and the difference between the testing boundary condition and the actual working condition is far, so that the testing result is inaccurate, the testing period is long, and the expenditure is high. Therefore, how to perform the fatigue strength test on the blisk for the blades is a technical problem to be solved urgently by those skilled in the art, wherein the key for solving the technical problem is to effectively fix the blisk by adopting a proper clamp in the vibration test, and no special clamp for fixing the blisk for the fatigue strength test exists in the prior art at present.
SUMMERY OF THE UTILITY MODEL
For solving prior art, blade fatigue strength test method can carry out the technical problem who destroys to the bladed disk, the technical scheme of the utility model as follows:
the utility model provides a special fixture for blade fatigue strength test of blisk, anchor clamps include axle center, web and centre gripping arm, and are a plurality of the web evenly arranges, every along the circumferencial direction in axle center the one end and the axle center fixed connection of web, the other end set up the centre gripping arm perpendicularly, treat the blisk cover of centre gripping and locate the circular outside that a plurality of centre gripping arms are constituteed.
Furthermore, one end of the web plate is fixedly connected with the axis through a screw, a threaded hole is formed in the other end of the web plate, the clamping arm is a bolt, the bolt penetrates through the threaded hole to extend downwards, and the outer side of the extending section of the bolt is sleeved with the blisk to be clamped.
Furthermore, the number of the web plates and the bolts is 3-6.
Further, the distance range between the outer wall of the screw rod of the bolt and the central axis of the shaft center is 500-1500 mm.
Further, the clamp further comprises a base, and the axis is fixedly connected with the upper side face of the base through a screw.
Further, the base is provided with uniformly distributed mounting holes, and the base is fixedly connected with the vibration table top through the mounting holes.
The utility model provides a special fixture for blade fatigue strength test of blisk, compared with the prior art, its beneficial effect is:
the utility model provides a special fixture for blade fatigue strength test of blisk, can carry out the centre gripping with the blisk fixed, when carrying out the blade fatigue strength test of blisk, provide stable fixed clamping strength, and, adopt this special fixture to carry out the fatigue strength test method, compared with the fatigue test method of traditional cutting blade, the advantage lies in the experimental boundary condition of blisk blade and more is close actual use condition, do not destroy the blisk, reduce because the experimental data error that the blade cutting plane brought, the test cycle shortens, experimental expense reduces.
Drawings
FIG. 1 is a schematic view of a special fixture for testing fatigue strength of a blade of a blisk according to the present invention;
fig. 2 is an operation schematic diagram of a special fixture for testing fatigue strength of a blade of a blisk according to the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model provides a special fixture for blade fatigue strength test of blisk, anchor clamps include axle center 1, web 2 and centre gripping arm 3, and a plurality of webs 2 evenly arrange along the circumferencial direction of axle center 1, and the one end and the 1 fixed connection in axle center of every web 2, the other end set up centre gripping arm 3 perpendicularly, and a plurality of centre gripping arms 3 evenly distributed form circularly around axle center 1, treat the blisk cover of centre gripping and locate the circular outside that a plurality of centre gripping arms 3 formed. During installation, the leaf disc 7 of the blisk is placed at the end part of the clamping arms 3, and the leaf disc 7 is knocked and sleeved on the outer sides of the clamping arms 3 through the rubber force hammer. The axial center hole of the blisk to be clamped is sleeved on the central shaft of the clamp, and the clamping arm on the clamp applies vertical force to the blisk web plate to fix the blisk on the clamp.
In order to facilitate the assembly of the clamp, in a preferred embodiment, one end of the web 2 is fixedly connected with the shaft center 1 through a screw 5, the other end of the web is provided with a threaded hole 9, the clamping arm 3 is a bolt, the bolt penetrates through the threaded hole 9 to extend downwards, and the blisk 7 to be clamped is sleeved outside the extending section of the bolt.
The number of the web plates 2 and the number of the bolts are 3-6, different clamping strengths can be provided, the clamping device is applied to blisks 7 with different specifications, and the clamping strength is increased when the number of the bolts is increased.
The distance range of the outer wall of the screw rod of the bolt and the central axis of the axis 1 is 500-1000mm, namely, the inner diameter range of the blisk applicable to the clamp is 500-1000 mm.
The clamp further comprises a base 4, and the axis 1 is fixedly connected with the upper side face of the base 4 through a screw.
Evenly distributed's mounting hole 6 is seted up to base 4, and base 4 passes through mounting hole 6 and vibration mesa fixed connection, through the fatigue strength of vibration test blade 8.
The utility model relates to a special fixture for blade fatigue strength test of blisk's installation step as follows:
step S01, matching the blisk 7 of the blisk with the shaft center 1;
step S02, the axle center 1 is fixedly connected with the base 4 through a screw;
step S03, the clamp web 2 is fastened on the blisk 7 of the blisk through bolts;
and step S04, the fixture of the blisk is installed and is connected with the table top of the vibration table through the installation hole 6 of the base 4.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a special fixture for blade fatigue strength test of blisk, its characterized in that, anchor clamps include axle center, web and centre gripping arm, and are a plurality of the web evenly arranges, every along the circumferencial direction of axle center the one end and the axle center fixed connection of web, the other end set up the centre gripping arm perpendicularly, treat the blisk cover of centre gripping and locate the circular outside that a plurality of centre gripping arms are constituteed.
2. The special fixture for testing the fatigue strength of the blades of the blisk as claimed in claim 1, wherein one end of the web is fixedly connected with the shaft center through a screw, the other end of the web is provided with a threaded hole, the clamping arm is a bolt, the bolt passes through the threaded hole and extends downwards, and the blisk to be clamped is sleeved outside the extending section of the bolt.
3. The special fixture for testing the fatigue strength of the blade of the blisk according to claim 2, wherein the number of the webs and the bolts is 3-6.
4. The special fixture for testing the fatigue strength of the blade of the blisk as claimed in claim 3, wherein the distance between the outer wall of the bolt and the central axis of the shaft is in the range of 500-1500 mm.
5. The special fixture for testing the fatigue strength of the blades of the blisk as claimed in claim 4, wherein the fixture further comprises a base, and the shaft center is fixedly connected with the upper side surface of the base through a screw.
6. The special fixture for testing the fatigue strength of the blades of the blisk as claimed in claim 5, wherein the base is provided with mounting holes which are evenly distributed, and the base is fixedly connected with the vibration table through the mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842415.1U CN210269401U (en) | 2019-06-05 | 2019-06-05 | Special clamp for testing fatigue strength of blade of blisk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842415.1U CN210269401U (en) | 2019-06-05 | 2019-06-05 | Special clamp for testing fatigue strength of blade of blisk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210269401U true CN210269401U (en) | 2020-04-07 |
Family
ID=70040817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920842415.1U Active CN210269401U (en) | 2019-06-05 | 2019-06-05 | Special clamp for testing fatigue strength of blade of blisk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210269401U (en) |
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2019
- 2019-06-05 CN CN201920842415.1U patent/CN210269401U/en active Active
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