CN215658305U - Clamping device for deep hole machining of special-shaped nozzle shell - Google Patents
Clamping device for deep hole machining of special-shaped nozzle shell Download PDFInfo
- Publication number
- CN215658305U CN215658305U CN202122195336.6U CN202122195336U CN215658305U CN 215658305 U CN215658305 U CN 215658305U CN 202122195336 U CN202122195336 U CN 202122195336U CN 215658305 U CN215658305 U CN 215658305U
- Authority
- CN
- China
- Prior art keywords
- deep hole
- special
- shaped
- fixed seat
- clamping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of aero-engines, and relates to a clamping device for deep hole machining of a special-shaped nozzle shell, which comprises a fixed seat and an L-shaped bracket positioned above the fixed seat, wherein the fixed seat is connected with a numerical control electric spark machine tool; the L-shaped bracket is formed by integrally forming a vertical bracket and a horizontal bracket, the vertical bracket is provided with a mounting hole matched with the structure of the deep hole aperture part to be processed, and the connecting part of the deep hole aperture part to be processed is fixedly connected with the vertical bracket; the opening of the part with the deep hole diameter to be processed is provided with a positioning sleeve, a ceramic guide sleeve is arranged in the positioning sleeve, the ceramic guide sleeve extends downwards to abut against the arc surface of the part with the deep hole diameter to be processed, and an electrode wire penetrates through the ceramic guide sleeve. The device can meet the positioning and clamping requirements in the deep hole machining process of the special-shaped nozzle shell by installing and fixing the fixed seat and the L-shaped support, prevent deformation and displacement in the machining process and ensure the coaxiality requirement, the position requirement and the size precision requirement of parts.
Description
Technical Field
The utility model belongs to the technical field of aircraft engines, relates to an engine fuel nozzle shell, and particularly relates to a clamping device for deep hole machining of a special-shaped nozzle shell.
Background
The deep hole processing of aircraft engine fuel nozzle casing is the field that the machinist has been explored all the time, and the size, the position degree, roughness etc. of deep hole aperture are the main factor that directly influences aviation performance, are the important process of aircraft engine fuel nozzle manufacturing, and its machining precision can directly influence the nozzle performance test, indirectly influences aircraft engine's life. Therefore, to ensure proper flight of the aircraft, high precision nozzle housings must be machined to complete adequate combustion of aviation fuel to improve combustion efficiency. Moreover, the precision of the processing tool can not only ensure the deep hole processing position degree, but also indirectly determine the accuracy and stability of the performance.
The existing machining tool is inconvenient to clamp, low in efficiency, high in cost and large in machining error when the outer diameter of a part is clamped by a three-jaw chuck and two jaws of a lathe in a turning process, a cutter is excessively long to generate cutter relieving, the part of a deep-hole shell is prone to position deviation, the problems of size out-of-tolerance, coaxiality and the like are caused, and the design requirements are difficult to meet. Therefore, a simple deep-hole shell processing and clamping device for the special-shaped nozzle shell needs to be designed, so that the processing precision of the reference surface is guaranteed, and the coaxiality requirement is also guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a clamping device for deep hole machining of a special-shaped nozzle shell, so that the problems of poor positioning, precision and coaxiality caused by repeated clamping are solved.
The purpose of the utility model is solved by the following technical scheme:
the clamping device for processing the deep hole of the special-shaped nozzle shell comprises a fixed seat and an L-shaped bracket positioned above the fixed seat, wherein the fixed seat is connected with a numerical control electric spark machine tool; the L-shaped support is formed by integrally forming a vertical support and a horizontal support, the vertical support is provided with a mounting hole matched with the structure of the deep hole aperture part to be processed, and a connecting part of the deep hole aperture part to be processed is fixedly connected with the vertical support; the opening of the part with the deep hole diameter to be processed is provided with a positioning sleeve, a ceramic guide sleeve is arranged in the positioning sleeve, the ceramic guide sleeve extends downwards to abut against the arc surface of the part with the deep hole diameter to be processed, and an electrode wire penetrates through the ceramic guide sleeve.
Furthermore, U-shaped grooves are formed in two ends of the fixed seat, and the U-shaped grooves are fixedly connected with grooves in the numerical control electric spark machine tool through pressing plates.
Furthermore, the L-shaped bracket is connected with the fixed seat through a positioning pin and a screw.
Further, the connecting part of the part with the deep hole aperture to be processed is fixedly connected with the vertical support through a bolt.
Further, the discharge gap between the electrode wire and the arc surface of the part with the deep hole diameter to be processed is less than 0.05 mm.
Furthermore, the vertical support comprises a rectangular lower support frame and a triangular upper support frame positioned above the lower support frame, and the upper support frame and the lower support frame are integrally formed.
Further, mounting holes are respectively formed in three top points of the triangular upper support frame, and the connecting portion of the part with the deep hole diameter to be processed is fixedly connected with the mounting holes through bolts.
Further, the connecting part of the part with the deep hole aperture to be processed has the same structure as the upper support frame.
Furthermore, the aperture center line of the to-be-processed deep hole aperture part and the electric spark machining center of the numerical control electric spark machine tool are on the same straight line.
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects: the positioning and clamping in the process of machining the deep hole of the special-shaped nozzle shell can be met by installing and fixing the fixed seat and the L-shaped bracket, and deformation and displacement in the machining process are prevented, so that the machining precision is improved; meanwhile, the problems of positioning, precision, coaxiality and the like caused by repeated clamping can be avoided, the coaxiality requirement, the position requirement and the size precision requirement of the part can be ensured, and the use requirement of the nozzle shell is indirectly met.
In addition, the fixed seat and the L-shaped support are made of steel plates, M8 screws with reliable quality in the market are selected as parts, the reliability of clamping and the stability of the machined parts are improved, the fixed seat and the L-shaped support can be used for multiple times, and the fixed seat and the L-shaped support have the advantages of being simple to install and convenient to disassemble.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an exploded structural view of a clamping device for deep hole machining of a special-shaped nozzle shell, provided by the utility model;
FIG. 2 is a top view of a clamping device for deep hole machining of a special-shaped nozzle shell according to the utility model;
fig. 3 is a sectional view B-B of fig. 2.
Wherein: 1. fixing a seat; 2. an "L" shaped stent; 3. a vertical support; 4. a horizontal support; 5. a connecting portion; 6. a ceramic guide sleeve; 7. a wire electrode; 8. a U-shaped groove; 9. positioning pins; 10. a screw; 11. a bolt; 12. mounting holes; 13. a positioning sleeve.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the utility model, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and examples.
Examples
Referring to fig. 1-3, the utility model provides a clamping device for deep hole machining of a special-shaped nozzle shell, which comprises a fixed seat 1 and an L-shaped bracket 2 positioned above the fixed seat 1, wherein the fixed seat 1 is connected with a numerical control electric spark machine tool; the L-shaped support 2 is formed by integrally forming a vertical support 3 and a horizontal support 4, a mounting hole 12 matched with the structure of the deep hole aperture part to be processed is formed in the vertical support 3, and a connecting part 5 of the deep hole aperture part to be processed is fixedly connected with the vertical support 3; the opening of the part with the deep hole diameter to be processed is provided with a positioning sleeve 13, a ceramic guide sleeve 6 is arranged in the positioning sleeve 13, the ceramic guide sleeve 6 extends downwards to abut against the arc surface of the part with the deep hole diameter to be processed, and an electrode wire 7 penetrates through the ceramic guide sleeve 6.
Furthermore, two ends of the fixed seat 1 are provided with U-shaped grooves 8, and the U-shaped grooves 8 are fixedly connected with grooves on the numerical control electric spark machine tool through pressing plates.
Further, the L-shaped bracket 2 is connected with the fixed seat 1 through a positioning pin 9 and a screw 10.
Further, the connecting part 5 of the part with the deep hole diameter to be processed is fixedly connected with the vertical support 3 through a bolt 11.
Further, the discharge gap between the electrode wire 7 and the arc surface of the part with the deep hole diameter to be processed is less than 0.05 mm.
Further, the vertical support 3 comprises a rectangular lower support frame and a triangular upper support frame positioned above the lower support frame, and the upper support frame and the lower support frame are integrally formed.
Further, mounting holes 12 are respectively formed in three top points of the triangular upper support frame, and the connecting portion 5 of the part with the deep hole diameter to be processed is fixedly connected with the mounting holes 12 through bolts 11; wherein, three apex department is provided with the chamfer respectively to reduce the staff that collides with in the installation.
Further, the connecting part 5 of the part with the deep hole aperture to be processed has the same structure as the upper support frame.
Furthermore, the aperture center line of the to-be-processed deep hole aperture part and the electric spark machining center of the numerical control electric spark machine tool are on the same straight line.
Further, the fixed seat 1 and the L-shaped support 2 are both made of steel plates, and spring steel with reliable quality in the market is preferably selected to improve the clamping reliability and the stability of machined parts.
The clamping device for processing the deep hole of the special-shaped nozzle shell comprises a fixed seat 1, an L-shaped support 2, a positioning sleeve 13, a ceramic guide sleeve 6, an M6 bolt, an M8 screw, a phi 1.5 electrode wire and the like. Therefore, the utility model adopts electric spark to process deep holes. The specific working process is as follows:
firstly, connecting a fixed seat 1 with a numerical control electric spark machine tool, and connecting a U-shaped groove 8 on the fixed seat 1 with a groove on the machine tool by using a pressing plate, so as to ensure that a part with a deep hole diameter to be processed and the fixed seat 1 do not rotate along with the part and have good position requirement; the fixed seat 1 and the L-shaped bracket 2 are positioned by two positioning pins 9 and are in threaded connection with the L-shaped bracket 2 by matching with an M8 screw; the part to be processed with the deep hole aperture is fixedly connected with the L-shaped bracket 2 by using an M6 positioning bolt, and is assembled as shown in the attached drawing 1.
Then, when the electric spark is used for machining, firstly, the positioning sleeve 13 is used for positioning the part with the deep hole diameter to be machined, the micro clearance fit is used, so that the part with the deep hole diameter to be machined does not shake, the positioning circle jumps within 0.01mm by adopting a meter making method, the bottom of the ceramic guide sleeve 6 is contacted with the arc surface of the part with the deep hole diameter to be machined, the wire electrode 7 moves downwards along the guide sleeve, the clearance is within 0.05mm, so that the wire electrode 7 cannot move upwards, downwards, leftwards and rightwards, and the machining precision is ensured; meanwhile, the aperture center line of the to-be-processed deep hole aperture part and the electric spark machining center of the numerical control electric spark machine tool are on the same straight line.
And finally, fixing the distance by utilizing a guiding principle and a tight fit principle and fixedly connecting the screw 10 and the screw hole, and ensuring that the center of the clamping device, the center of the part with the bore diameter of the deep hole to be processed and the rotation center of the electric spark machine tool are on the same straight line.
In conclusion, the clamping device for deep hole machining of the special-shaped nozzle shell, provided by the utility model, can meet the positioning and clamping requirements in the deep hole machining process of the special-shaped nozzle shell through the installation and fixation of the fixed seat 1 and the L-shaped bracket 2, and prevent deformation and displacement in the machining process so as to improve the machining precision; meanwhile, the problems of positioning, precision, coaxiality and the like caused by repeated clamping can be avoided, the coaxiality requirement, the position requirement and the size precision requirement of the part can be ensured, and the use requirement of the nozzle shell is indirectly met.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. A clamping device for deep hole machining of a special-shaped nozzle shell is characterized by comprising a fixed seat (1) and an L-shaped support (2) positioned above the fixed seat (1), wherein the fixed seat (1) is connected with a numerical control electric spark machine tool; the L-shaped support (2) is formed by integrally forming a vertical support (3) and a horizontal support (4), a mounting hole (12) matched with the structure of the part with the deep hole diameter to be processed is formed in the vertical support (3), and a connecting part (5) of the part with the deep hole diameter to be processed is fixedly connected with the vertical support (3); the opening of the part with the deep hole diameter to be processed is provided with a positioning sleeve (13), a ceramic guide sleeve (6) is arranged in the positioning sleeve (13), the ceramic guide sleeve (6) extends downwards to abut against the arc surface of the part with the deep hole diameter to be processed, and an electrode wire (7) penetrates through the ceramic guide sleeve (6).
2. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 1, wherein U-shaped grooves (8) are formed in two ends of the fixed seat (1), and the U-shaped grooves (8) are fixedly connected with grooves in a numerical control electric spark machine tool through pressing plates.
3. The clamping device for deep hole machining of the special-shaped nozzle shell as claimed in claim 1, wherein the L-shaped bracket (2) is positioned with the fixed seat (1) through a positioning pin (9) and connected with the fixed seat (1) through a screw (10).
4. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 1, wherein the connecting part (5) of the part with the deep hole diameter to be machined is fixedly connected with the vertical support (3) through a bolt (11).
5. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 1, wherein a discharge gap between the electrode wire (7) and the arc surface of the part with the deep hole diameter to be machined is less than 0.05 mm.
6. The clamping device for deep hole machining of the special-shaped nozzle shell as claimed in claim 1, wherein the vertical support (3) comprises a rectangular lower support frame and a triangular upper support frame positioned above the lower support frame, and the upper support frame and the lower support frame are integrally formed.
7. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 6, wherein mounting holes (12) are respectively formed in three vertexes of the triangular upper support frame, and the connecting portion (5) of the part with the deep hole diameter to be machined is fixedly connected with the mounting holes (12) through bolts (11).
8. The clamping device for deep hole machining of the special-shaped nozzle shell as claimed in claim 6, wherein the connecting part (5) of the part with the deep hole diameter to be machined is the same as the upper support frame in structure.
9. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 1, wherein the hole diameter central line of the part with the hole diameter of the deep hole to be machined is on the same straight line with an electric spark machining center of a numerical control electric spark machine tool.
10. The clamping device for deep hole machining of the special-shaped nozzle shell according to claim 1, wherein the fixed seat (1) and the L-shaped bracket (2) are both made of steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122195336.6U CN215658305U (en) | 2021-09-11 | 2021-09-11 | Clamping device for deep hole machining of special-shaped nozzle shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122195336.6U CN215658305U (en) | 2021-09-11 | 2021-09-11 | Clamping device for deep hole machining of special-shaped nozzle shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215658305U true CN215658305U (en) | 2022-01-28 |
Family
ID=79962385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122195336.6U Active CN215658305U (en) | 2021-09-11 | 2021-09-11 | Clamping device for deep hole machining of special-shaped nozzle shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215658305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430857A (en) * | 2022-11-07 | 2022-12-06 | 成都航利航空科技有限责任公司 | Precise deep hole machining device and method for fuel nozzle shell of aircraft engine |
-
2021
- 2021-09-11 CN CN202122195336.6U patent/CN215658305U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430857A (en) * | 2022-11-07 | 2022-12-06 | 成都航利航空科技有限责任公司 | Precise deep hole machining device and method for fuel nozzle shell of aircraft engine |
| CN115430857B (en) * | 2022-11-07 | 2023-03-24 | 成都航利航空科技有限责任公司 | Precise deep hole machining device and method for fuel nozzle shell of aircraft engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215658305U (en) | Clamping device for deep hole machining of special-shaped nozzle shell | |
| CN109396894B (en) | Clamp body for machining intermediate casing surface and hole | |
| CN211761005U (en) | Carry tool positioner | |
| CN218556339U (en) | Cam positioning tool | |
| CN105538013A (en) | Pipe joint turning fixture | |
| CN211009471U (en) | Assembled eccentric positioning pin assembly | |
| CN216179610U (en) | Machine tool and accurate grinding cam clamp thereof | |
| CN219151794U (en) | Workpiece clamping device for electric machining | |
| CN211305566U (en) | Work fixture | |
| CN219665176U (en) | Drilling tool special for support | |
| CN113182628A (en) | Positioning device and positioning processing method for pull rod waist hole linear cutting | |
| CN218556343U (en) | Cutting positioning device suitable for single-process double-station thin-wall lathe | |
| CN219725283U (en) | Clamp for processing sensor shell | |
| CN215699863U (en) | Clamping tool convenient to change work piece | |
| CN220807018U (en) | Tool for positioning and processing cylinder bearing holes through cylinder holes | |
| CN220388658U (en) | Eccentric valve core clamp | |
| CN219336867U (en) | Eccentric inclined hole subsection processing device | |
| CN218460903U (en) | Composite clamp for half-axle shell | |
| CN218461083U (en) | Multi-purpose external thread machining tool | |
| CN219617197U (en) | Special tool for machining special-shaped thin-wall part | |
| CN215200030U (en) | Tool for machining V-shaped groove on sphere | |
| CN214868854U (en) | Die insert integrates processing with clamping fixing device | |
| CN220372394U (en) | Copper male fixing clamp | |
| CN211661254U (en) | Hobbing internal expansion tool of high-speed numerical control gear hobbing machine for automobile gear | |
| CN219945875U (en) | Tool clamp for processing semiconductor parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |