CN210945726U - Ultrasonic strengthening device applied to turbine disc mortise surface - Google Patents
Ultrasonic strengthening device applied to turbine disc mortise surface Download PDFInfo
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- CN210945726U CN210945726U CN201921760098.5U CN201921760098U CN210945726U CN 210945726 U CN210945726 U CN 210945726U CN 201921760098 U CN201921760098 U CN 201921760098U CN 210945726 U CN210945726 U CN 210945726U
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- shell
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- instrument head
- tongue
- tool
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Abstract
The utility model provides a be applied to supersound of turbine disc tongue-and-groove face and reinforce device, the device includes the shell, the transducer, become width of cloth pole, hexagon socket head cap screw and instrument head, become width of cloth pole and transducer setting in the cavity of shell, there are two sets of mounting holes of mutually supporting on the circular conical surface of shell, the instrument head both sides are equipped with the back shaft, the installation of instrument head is accomplished through the mounting hole with the back shaft embedding shell at both ends to the instrument head, the device can change the longitudinal vibration that becomes the width of cloth pole and produce into the transverse vibration of instrument head to the tongue-and-groove face, realize the ultrasonic machining to the tongue-and-groove face. Compared with the traditional method for processing the mortise surface, the method has the advantages of simple process, convenient operation and high processing precision, and the mortise surface processed by the method has the advantages of improving the surface hardness of the material, reducing the surface roughness, improving the fatigue resistance and the like.
Description
Technical Field
The utility model relates to a be applied to supersound of turbine disc tongue-and-groove face and reinforce device belongs to ultrasonic machining technical field.
Background
The turbine disc is a key part in a turbine rotor of an aircraft engine, rotates at a high speed under high temperature and high pressure and complex dynamic load, bears the action of very complex high-cycle alternating load, and is in a severe service environment. The turbine disc mortise and the blade are connected by the fir-tree-shaped tenon, and the stress of the blade is complex, so that the turbine disc mortise is interacted with the turbine disc mortise, the turbine disc mortise becomes a weak link for generating stress concentration, and how to improve the surface quality of the turbine disc mortise is particularly important.
The traditional method for processing the mortise surface of the turbine disc generally adopts the technical methods of forming milling, broaching, grinding and the like. The size of the turbine disc mortise is small, the shape is complex, the structure of the cutter is complex when the forming milling machining is adopted, and high-precision cutter grinding is very difficult. When broaching machining is adopted, the broaching tool is long in development period, difficult to sharpen and high in broaching machine cost, so that the broaching machining process is poor in flexibility in mortise machining. When the formed grinding wheel is used for carrying out mortise forming grinding processing, the rigidity is poor, the grinding wheel is quickly worn, and the grinding precision is not easy to guarantee.
In order to improve the appearance quality, improve the wear resistance and the surface strength of the surface and reduce the roughness, after the specified dimensional precision and geometric precision are obtained, if the requirement of the surface quality is not met, the mortise surface is subjected to ultrasonic strengthening processing according to the requirement, and the mortise surface of the turbine disc is treated by utilizing the working mode of combining ultrasonic impact energy and static load rolling. Under the given feeding condition, the tool head transmits static pressure and ultrasonic impact vibration to the mortise surface to generate impact extrusion action so as to enable the metal material to generate large-amplitude elastic-plastic deformation, and the generated plastic flow fills or partially fills the valley on the mortise surface by the peak, so that the surface roughness is reduced, the surface hardness is improved, and the fatigue resistance is enhanced.
Disclosure of Invention
The utility model provides a be applied to the supersound of turbine disc tongue-and-groove face and reinforce device to prior art's not enough. The device can realize the ultrasonic processing of the tool head to the tongue-and-groove surface, thereby improving the processing precision.
This turbine disc tongue-and-groove face supersound is reinforceed device, including shell, transducer, amplitude transformer, hexagon socket head cap screw and instrument head, its characterized in that, amplitude transformer and transducer set up in the shell cavity, are equipped with the mounting hole on the conical surface, and the instrument head passes through the mounting hole installation of shell, and instrument head and amplitude transformer contact can change the longitudinal vibration of amplitude transformer into the transverse vibration of instrument head to tongue-and-groove face. The tongue-and-groove surface generates large-amplitude elastic-plastic deformation under the action of ultrasonic processing, so that the surface roughness is reduced, the surface hardness is improved, and the fatigue resistance is enhanced.
The tool head is in a fir rolling cylinder shape meshed with the side face of the tenon, the axis of the tool head is parallel to a generatrix of the amplitude transformer, the innermost edge of the tool head exceeds the surface of the shell, support shafts extending outwards are symmetrically arranged on two sides of the tool head, and the two tool heads are arranged on two sides symmetrical about the amplitude transformer through mounting holes in the shell.
The shell is two same detachable shells, is engaged with the outline of the tool head and is connected with the tool head through threads. When the device is installed, the device is firstly positioned by the positioning grooves on the matching surface and then connected by the hexagon socket head cap screws.
The device relies on the high frequency vibration of instrument head to process the tongue-and-groove face, and the instrument head uses the mounting hole as the rotation of center, reduces the wearing and tearing to the instrument head. The device has two tool heads, can realize processing two tongue-and-groove faces simultaneously when clamping once, and compared with the traditional processing method which can only process one side, the device can improve the processing efficiency and the processing precision.
Drawings
Fig. 1 is a schematic view of the overall structure.
FIG. 2 is a schematic view of the process.
Fig. 3 is a schematic view of the housing.
In the figure: 1 shell, 2 transducers, 3 horns, 4 tool heads, 5 hexagon socket head bolts and 6 turbine discs.
Detailed Description
As shown in fig. 1, the utility model relates to an ultrasonic strengthening device applied to the mortise surface of a turbine disc, which comprises a shell 1, a transducer 2, an amplitude transformer 3, a tool head 4 and a hexagon socket head cap screw 5. The shell 1 is two the same structures, fixes a position through the constant head tank of fitting surface to connect with hexagon socket head cap screw 5, install transducer 2 and change width of cloth pole 3 in the shell 1 cavity, change width of cloth pole 3 and install on the shell through the groove in the shell 1, be equipped with the mounting hole of symmetry on the conical surface of shell 1, be used for mounting tool head 4. One end of the amplitude transformer 3 is connected with the front end of the transducer 2, the other end of the amplitude transformer is contacted with two arc surfaces of the tool head 4 through a conical surface, the tool head 4 is in a fir-tree roller shape meshed with the side surface of the tenon, and the innermost edge of the tool head exceeds the surface of the shell 1, so that longitudinal vibration generated by the amplitude transformer 3 can be converted into transverse vibration to the mortise surface. The two ends of the tool head are provided with supporting shafts, and the supporting shafts are arranged on two symmetrical sides of the amplitude transformer through mounting holes in the shell 1, so that ultrasonic processing of two tongue-and-groove surfaces is realized.
The turbine disk 6 is clamped on a machine tool fixture, so that the tool head 4 extends into the mortise gap from the end face of the turbine disk 6, the profile of the tool head is meshed with the mortise tooth shape and applies static pressure to the mortise face, the amplitude transformer 3 generates high-frequency vibration under the action of the transducer 2, and the mortise face is transversely vibrated through the tool head 4, so that dynamic impact force is applied. When the device and turbine disc 6 relative movement in the tongue-and-groove clearance, tool bit 4 uses the mounting hole as the rotation of center, reduces the wearing and tearing to the tool bit to the realization is to the ultrasonic machining of both sides tongue-and-groove face. The tool head 4 leaves the mortise surface from the other end surface, and the ultrasonic processing process is completed.
Claims (3)
1. The utility model provides a be applied to supersound of turbine disc tongue-and-groove face and reinforce device, includes shell, transducer, amplitude transformer, hexagon socket head cap screw and instrument head, its characterized in that, amplitude transformer and transducer set up in the shell cavity, are equipped with the mounting hole on the conical surface, and the instrument head passes through the mounting hole installation of shell, and instrument head and amplitude transformer contact can change the longitudinal vibration of amplitude transformer into the transverse vibration of instrument head to the tongue-and-groove face.
2. The ultrasonic peening apparatus of claim 1, wherein the tool head is in the form of a fir-tree roller engaged with the side of the tenon, the axis of the fir-tree roller is parallel to the generatrix of the horn, the innermost edge of the tool head extends beyond the surface of the housing, the two sides of the tool head are symmetrically provided with outwardly extending support shafts, and the two tool heads are mounted on the two sides symmetrically about the horn through mounting holes in the housing.
3. The ultrasonic enhancement device of claim 1, wherein the housing is two identical removable housings that engage the tool bit profile and are threadably engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921760098.5U CN210945726U (en) | 2019-10-21 | 2019-10-21 | Ultrasonic strengthening device applied to turbine disc mortise surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921760098.5U CN210945726U (en) | 2019-10-21 | 2019-10-21 | Ultrasonic strengthening device applied to turbine disc mortise surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210945726U true CN210945726U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921760098.5U Expired - Fee Related CN210945726U (en) | 2019-10-21 | 2019-10-21 | Ultrasonic strengthening device applied to turbine disc mortise surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210945726U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523016A (en) * | 2022-02-18 | 2022-05-24 | 北京航空航天大学 | Rolling strengthening processing method for concave circular arc surface of turbine disc mortise |
| CN115094215A (en) * | 2022-06-24 | 2022-09-23 | 中国航发北京航空材料研究院 | Shot type ultrasonic impact strengthening device for turbine disc mortise and using method thereof |
-
2019
- 2019-10-21 CN CN201921760098.5U patent/CN210945726U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523016A (en) * | 2022-02-18 | 2022-05-24 | 北京航空航天大学 | Rolling strengthening processing method for concave circular arc surface of turbine disc mortise |
| CN115094215A (en) * | 2022-06-24 | 2022-09-23 | 中国航发北京航空材料研究院 | Shot type ultrasonic impact strengthening device for turbine disc mortise and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 Termination date: 20201021 |