CN216176691U - Fixture tool for machining special-shaped fuel nozzle joint - Google Patents
Fixture tool for machining special-shaped fuel nozzle joint Download PDFInfo
- Publication number
- CN216176691U CN216176691U CN202122701270.3U CN202122701270U CN216176691U CN 216176691 U CN216176691 U CN 216176691U CN 202122701270 U CN202122701270 U CN 202122701270U CN 216176691 U CN216176691 U CN 216176691U
- Authority
- CN
- China
- Prior art keywords
- special
- nozzle
- shaped fuel
- fuel nozzle
- machining
- 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
Landscapes
- Jigs For Machine Tools (AREA)
Abstract
The utility model discloses a fixture tool for machining a special-shaped fuel nozzle joint, which comprises a clamping body, wherein one end of the clamping body is provided with a cylinder connected with a lathe three-jaw chuck, the other end of the clamping body is an inclined plane body, the included angle between the inclined plane of the inclined plane body and the horizontal plane is equal to the included angle between the central axis of a prefabricated nozzle joint and a nozzle mounting plate, and the central axis of the nozzle joint is superposed with the axis of the cylinder; a containing cavity is formed in the clamping body and located between the inclined plane body and the cylinder, a through hole for the nozzle and the spray rod to penetrate through is formed in the inclined plane body, and the containing cavity is used for containing the nozzle and the spray rod; the inclined plane of the inclined plane body is evenly provided with a plurality of groups of locking mechanisms for fixing the special-shaped fuel nozzle. The fixture tool disclosed by the utility model can be used for quickly and stably clamping a workpiece, and can be used for finishing the processing of the inner hole, the step circumferential surface and the end surface of the nozzle joint by one-time clamping, so that the shape and the position accuracy of the inner hole, the step circumferential surface and the end surface of the nozzle joint are ensured.
Description
Technical Field
The utility model belongs to the technical field of machining auxiliary tools, and particularly relates to a fixture tool for machining a special-shaped fuel nozzle joint.
Background
An aircraft engine is a highly complex and precise thermal machine that provides the power required for flight of an aircraft. The heart of the airplane is known as 'industrial flower', directly influences the performance, reliability and economy of the airplane, and is an important embodiment of national science and technology, industry and national defense strength.
The fuel nozzle is used as an important component of an aircraft engine combustion chamber, the high-quality, stable and reliable performance of the fuel nozzle is of great significance to the aircraft engine, and the working performance of the fuel nozzle directly influences the power, the fuel economy and the reliability of the engine. As a terminal of the fuel injection system, the structural and geometric parameters of the fuel nozzle are key factors that affect the fuel flow characteristics, performance metrics, spray quality, and ultimately, engine combustion chamber efficiency and performance metrics. For this reason, the company designs a special-shaped efficient fuel nozzle structure as shown in fig. 1, in order to ensure that the nozzle structure can fully exert the effect, the processing precision of each part of the nozzle structure needs to be ensured, especially when a nozzle joint A1 is processed, one-time clamping needs to be ensured, and an inner hole, a step circumferential surface and an end surface are processed on a lathe at the same time, so as to ensure the shape (including roundness, cylindricity, planeness and the like) and the position precision (the perpendicularity of the end surface to an axis, the coaxiality between step shafts and the like) of the three parts; but because this nozzle shell whole appearance structure is complicated difficult for the location, does not have special fixture attachment, leads to nozzle joint A1 machining precision to be difficult to guarantee on the lathe, causes the product percent of pass not up to standard, and production efficiency is low simultaneously.
In view of this, the present invention provides a fixture for machining a special-shaped fuel nozzle joint, so as to overcome the defects of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a fixture tool for machining a special-shaped fuel nozzle joint, the fixture tool can convert the nozzle joint into circumferential motion around the central axis of the nozzle joint, and the fuel nozzle quick clamping body can be connected into a whole through a locking mechanism and a positioning pin, so that the machining precision of the nozzle joint can be ensured, the clamping of operators is facilitated, and the aim of improving the product yield and the production efficiency is fulfilled.
The purpose of the utility model is solved by the following technical scheme:
a fixture tool for machining a special-shaped fuel nozzle joint comprises a clamping body, wherein one end of the clamping body is provided with a cylinder connected with a lathe three-jaw chuck, the other end of the clamping body is an inclined plane body, an included angle alpha between an inclined plane of the inclined plane body and a horizontal plane is equal to an included angle between a central axis of a prefabricated nozzle joint and a nozzle mounting plate, and the central axis of the nozzle joint is superposed with the axis of the cylinder;
an accommodating cavity is formed in the clamping body and located between the inclined plane body and the cylinder, a through hole for the nozzle and the spray rod to penetrate through is formed in the inclined plane body, and the accommodating cavity is used for accommodating the nozzle and the spray rod;
and a plurality of groups of locking mechanisms for fixing the special-shaped fuel nozzle are uniformly distributed on the inclined plane of the inclined plane body.
Furthermore, the locking mechanism comprises a pressure plate and a screw, wherein the screw is positioned in the middle of the pressure plate and is in threaded connection with the inclined plane body.
Further, the pressing plate is a flat plate or an L-shaped plate with a support;
when the clamp plate is flat, the through hole is a step hole, the inner diameter of a large hole of the step hole is larger than the outer diameter of the nozzle mounting plate, the depth of the large hole is smaller than or equal to the thickness of the nozzle mounting plate, and the nozzle mounting plate is clamped on the step surface of the step hole, so that the clamp plate is convenient to compress and fix.
Furthermore, the pressing plate is made of a material with the hardness lower than that of the special-shaped fuel nozzle, so that the special-shaped fuel nozzle is prevented from being damaged by clamping.
Furthermore, the material of clamp plate is aluminium or copper.
Further, a rubber layer is arranged on the contact part of the bottom of the pressure plate and the nozzle mounting plate, and is used for increasing friction force and avoiding damaging the surface quality of the special-shaped fuel nozzle.
Further, the locking mechanisms are annularly and equally spaced around the nozzle mounting plate.
Further, the locking mechanisms are arranged in two groups, three groups or four groups.
Further, the inclined plane of the inclined plane body is fixedly provided with a positioning pin, the positioning pin is in clearance fit with the hole in the nozzle mounting plate, and the positioning pin is used for positioning the angular direction of the special-shaped fuel nozzle and preventing the special-shaped fuel nozzle from rotating in the circumferential direction.
Further, the top that the centre gripping body is located accommodation cavity sets up to the plane for keep centre gripping body balance from top to bottom, when processing nozzle joint, guarantee the centre gripping body can rotate steadily.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model relates to a fixture tool for processing a special-shaped fuel nozzle joint, which mainly comprises a clamping body, a locking mechanism and a positioning pin, wherein the central axis of the nozzle joint can be ensured to coincide with the center of a three-jaw chuck of a lathe through reasonable design of the clamping body, namely, the nozzle joint can be converted into rotary motion around the central axis of the nozzle joint through the fixture tool, so that one-time clamping is realized, and the inner hole, the step circumferential surface and the end surface of the nozzle joint can be respectively processed on the lathe, thereby ensuring the shape and the position accuracy of the nozzle joint; in addition, the fixture tool can conveniently and quickly disassemble and assemble workpieces, has a simple and convenient structure, and has good stability and reliability; that is, the jig tool can improve the production efficiency while ensuring the processing quality.
2. The utility model relates to a fixture tool for processing a special-shaped fuel nozzle joint, wherein a rubber layer is arranged at the contact part of the bottom of a pressure plate and a nozzle mounting plate in a locking mechanism, and is used for increasing the clamping force of the locking mechanism and avoiding damaging the surface quality of a fuel nozzle.
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 a schematic view of a pre-machined contoured nozzle of the present invention;
FIG. 2 is a schematic structural view of a fixture in use;
FIG. 3 is a front view of the clamp assembly of the present invention in use;
fig. 4 is a schematic perspective view of the fixture tool of the present invention.
Wherein: 1 is a clamping body; 2 is a locking mechanism; 3 is a positioning pin; 11 is a cylinder; 12 is an inclined plane body; 13 is a containing cavity; 14 is a plane; 21 is a pressing plate; 22 is a screw; 121 is an inclined plane; 122 is a through hole; a is a special-shaped fuel nozzle; a1 is a nozzle joint; a2 is a nozzle mounting plate; a3 is a nozzle; a4 is a spray rod; alpha is an included angle.
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.
Referring to fig. 1, as described in the background of the present application, the product is a special-shaped fuel nozzle a developed by our company, and when machining, the shape and position accuracy of an inner hole, a step circumferential surface and an end surface of a nozzle joint a1 are ensured, but since the overall shape structure of the special-shaped fuel nozzle a is complex and is not easy to position and clamp, effective machining is difficult, and therefore the inventor designs a fixture tool for machining the special-shaped fuel nozzle a on a lathe.
As shown in fig. 2-4, a fixture tool for machining a special-shaped fuel nozzle joint comprises a clamping body 1, a cylinder 11 connected with a lathe three-jaw chuck is arranged at one end of the clamping body 1, an inclined plane 12 is arranged at the other end of the clamping body, an included angle alpha between an inclined plane 121 of the inclined plane 12 and a horizontal plane is equal to an included angle between a central axis of a preprocessed nozzle joint a1 and a nozzle mounting plate a2, and the central axis of the nozzle joint a1 coincides with the axis of the cylinder 11.
The clamping body 1 is provided with a containing cavity 13 between the inclined plane body 12 and the cylinder 11, the inclined plane body 12 is provided with a through hole 122 for the nozzle A3 and the spray rod A4 to pass through, and the containing cavity 13 is used for containing the nozzle A3 and the spray rod A4; the inclined plane 121 of the inclined plane body 12 is uniformly provided with a plurality of groups of locking mechanisms 2 for fixing the special-shaped fuel nozzle A. The nozzle joint A1 is converted into rotary motion around the central axis of the nozzle joint through the matching of the structure and a lathe three-jaw chuck, the locking mechanism 2 and the nozzle mounting plate A2 are used for integrally fixing the special-shaped fuel nozzle, one-time clamping is realized, the processing procedures of the inner hole, the stepped circumferential surface and the end surface of the nozzle joint A1 can be respectively carried out on a lathe, the shape and the position accuracy of the three are ensured, and the processing efficiency is improved.
Specifically, the locking mechanism of the utility model comprises a pressure plate 21 and a screw 22, wherein the screw 22 is positioned in the middle of the pressure plate 21 and is in threaded connection with the inclined plane body 12, and when a workpiece is disassembled and assembled, the pressure plate 21 is not separated from the screw 22 all the time, so that the loss of parts is avoided.
Wherein, the clamp plate 21 is dull and stereotyped or the L shaped plate that the area supported, as shown in fig. 2 ~ 4, when the clamp plate 21 is dull and stereotyped, the through-hole 122 is the step hole, and the large pore internal diameter that the step hole is located inclined plane 121 one side is greater than the external diameter of nozzle mounting panel A2, and the macroporous degree of depth is less than or equal to the thickness of nozzle mounting panel A2, can clamp nozzle mounting panel A2 on the step face in step hole this moment, makes things convenient for clamp plate 21 to compress tightly nozzle mounting panel A2, when preventing to process nozzle joint A1, special-shaped fuel nozzle A makes a round trip to move.
In addition, the pressure plate 21 is made of a material with the hardness lower than that of the special-shaped fuel nozzle A, so that the special-shaped fuel nozzle A is prevented from being damaged by clamping. Preferably, the material generally selected for forming the platen 21 is aluminum, copper or iron.
In practical use, although the pressure plate 21 is made of a material with hardness lower than that of the special-shaped fuel nozzle A, in order to ensure that the locking mechanism 2 can completely fasten the special-shaped fuel nozzle A, acting force applied to the screw 22 is not accurately grasped, and damage to the nozzle mounting plate A2 is easily caused, in order to solve the problem, a rubber layer (not shown in the figure) is arranged at the bottom of the pressure plate 21, namely, at the contact part with the nozzle mounting plate A2, so that on one hand, friction force between the pressure plate 21 and the nozzle mounting plate A2 is increased, the special-shaped fuel nozzle is conveniently locked and fixed, and on the other hand, damage to the surface quality of the special-shaped fuel nozzle A can be avoided.
The locking mechanisms 2 are annularly and equally spaced around the nozzle mounting plate A2, and the locking mechanisms 2 can be correspondingly arranged in two groups, three groups or four groups according to the size of the special-shaped fuel nozzle, such as two groups in the example.
The positioning pin 3 is fixedly arranged on the inclined surface 121 of the inclined surface body 12, the positioning pin 3 is in clearance fit with a hole in a nozzle mounting plate A2, and the positioning pin 3 is used for positioning the angular direction of the special-shaped fuel nozzle A and preventing the special-shaped fuel nozzle A from rotating in the circumferential direction; in addition, the position of the special-shaped fuel nozzle A can be quickly determined through the positioning pin 3, so that the special-shaped fuel nozzle A is convenient to quickly clamp, and the production efficiency is improved.
The top of the clamping body 1 in the accommodating cavity 13 is set to be the plane 14, and the weight of the bottom of the clamping body 1 is low due to the arrangement of the accommodating cavity 13, so that the top of the clamping body 1 is set to be the plane, and the balance of the upper weight and the lower weight of the clamping body 1 is kept as much as possible, so that the clamping body 1 can be ensured to rotate stably when the nozzle joint A1 is machined.
The clamp tool of the utility model has the following working description:
firstly, fixedly connecting a cylinder in a clamping body with a three-jaw chuck of a lathe;
secondly, sequentially enabling a nozzle and a spray rod of the special-shaped fuel nozzle to penetrate through the through hole, placing the nozzle mounting plate on the step surface of the step hole after the positioning pin is aligned with the hole of the nozzle mounting plate, and finally locking and fixing the special-shaped fuel nozzle through a locking mechanism;
and step three, after the clamping procedure of the special-shaped fuel nozzle is completed, machining the nozzle joint, after the machining is completed, detaching the special-shaped fuel nozzle from the tool, namely, completing the machining process of one nozzle joint, and when the next workpiece is to be machined, repeating the steps.
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. The fixture tool for machining the special-shaped fuel nozzle joint is characterized by comprising a clamping body (1), wherein one end of the clamping body (1) is provided with a cylinder (11) connected with a lathe three-jaw chuck, the other end of the clamping body is provided with an inclined plane body (12), an included angle alpha between an inclined plane (121) of the inclined plane body (12) and a horizontal plane is equal to an included angle between the central axis of a pre-machining nozzle joint (A1) and a nozzle mounting plate (A2), and the central axis of the nozzle joint (A1) is coincident with the axis of the cylinder (11);
an accommodating cavity (13) is formed in the clamping body (1) and located between the inclined plane body (12) and the cylinder (11), a through hole (122) for the nozzle (A3) and the spray rod (A4) to penetrate through is formed in the inclined plane body (12), and the accommodating cavity (13) is used for accommodating the nozzle (A3) and the spray rod (A4);
the inclined plane (121) of the inclined plane body (12) is evenly provided with a plurality of groups of locking mechanisms (2) for fixing the special-shaped fuel nozzle (A).
2. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 1, wherein the locking mechanism (2) comprises a pressing plate (21) and a screw (22), and the screw (22) is located in the middle of the pressing plate (21) and is in threaded connection with the inclined body (12).
3. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 2, wherein the pressure plate (21) is a flat plate or an L-shaped plate with a support;
when clamp plate (21) is dull and stereotyped, through-hole (122) are the step hole, just the macropore internal diameter in step hole is greater than the external diameter of nozzle mounting panel (A2), and macroporous degree of depth is less than or equal to the thickness of nozzle mounting panel (A2) for with nozzle mounting panel (A2) card on the step face in step hole, make things convenient for clamp plate (21) to compress tightly fixedly.
4. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 2, wherein the pressure plate (21) is made of a material with hardness lower than that of the special-shaped fuel nozzle (A), so that the special-shaped fuel nozzle (A) is prevented from being damaged by clamping.
5. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 4, wherein the pressing plate (21) is made of aluminum or copper.
6. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 2, wherein a rubber layer is arranged at a contact part of the bottom of the pressure plate (21) and the nozzle mounting plate (A2) and is used for increasing friction force and avoiding damage to the surface quality of the special-shaped fuel nozzle (A).
7. The fixture tooling for machining the special-shaped fuel nozzle joint as recited in claim 1, wherein the locking mechanisms (2) are annularly and equally spaced around the nozzle mounting plate (A2).
8. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 7, wherein the locking mechanisms (2) are arranged in two groups, three groups or four groups.
9. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 1, wherein a positioning pin (3) is fixedly arranged on the inclined surface (121) of the inclined surface body (12), the positioning pin (3) is in clearance fit with a hole in the nozzle mounting plate (A2), and the positioning pin (3) is used for positioning the angular direction of the special-shaped fuel nozzle (A) and preventing the special-shaped fuel nozzle (A) from rotating in the circumferential direction.
10. The fixture tool for machining the special-shaped fuel nozzle joint as claimed in claim 1, wherein the top of the clamping body (1) located in the accommodating cavity (13) is provided with a plane (14) for keeping the clamping body (1) balanced up and down, and when the nozzle joint (A1) is machined, the clamping body (1) can be guaranteed to rotate stably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122701270.3U CN216176691U (en) | 2021-11-06 | 2021-11-06 | Fixture tool for machining special-shaped fuel nozzle joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122701270.3U CN216176691U (en) | 2021-11-06 | 2021-11-06 | Fixture tool for machining special-shaped fuel nozzle joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216176691U true CN216176691U (en) | 2022-04-05 |
Family
ID=80903958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122701270.3U Active CN216176691U (en) | 2021-11-06 | 2021-11-06 | Fixture tool for machining special-shaped fuel nozzle joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216176691U (en) |
-
2021
- 2021-11-06 CN CN202122701270.3U patent/CN216176691U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208961512U (en) | A kind of round piece fixture for batch processing | |
| CN204248507U (en) | The fixture of processing automobile gearbox balancing weight | |
| CN102642037B (en) | Processing method and boring clamp of front axle shell for excavator | |
| CN216176691U (en) | Fixture tool for machining special-shaped fuel nozzle joint | |
| CN208644770U (en) | A kind of top transition fixture of alternative center hole of shaft part | |
| CN203092331U (en) | Self-adaption clamping tool for blade machining | |
| CN215657887U (en) | Auxiliary tool fixture for machining special-shaped nozzle shell | |
| CN202952079U (en) | Clamp for machining thickness excircle surface of spherical shell | |
| CN218800498U (en) | Fixture tool for machining undercarriage stay bar | |
| CN204639895U (en) | Motorcycle cylinder head spiracle line process tool | |
| CN111618618A (en) | Flower disc type inner hole turning clamp | |
| CN215035716U (en) | Special-shaped nozzle shell machining tool | |
| CN202701949U (en) | Vacuum suction lens milling fixture | |
| CN113369952A (en) | Clamp for machining inner hole of shim | |
| CN112091252B (en) | Pressing tool for clamping by utilizing inner cavity steps of part and clamping method thereof | |
| CN113369953A (en) | Clamp for machining excircle of shim | |
| CN212145529U (en) | Clutch housing milling flutes auxiliary device | |
| CN213438334U (en) | Adjustable multifunctional clamp for machining | |
| CN209681678U (en) | The self-positioning special fixture of machining center | |
| CN210524539U (en) | Multi-eccentric hole turning clamp | |
| CN103465076A (en) | Four-point clamping fixture | |
| CN113695942A (en) | Clamping tool for sealing and processing static blade and using method thereof | |
| CN208342655U (en) | A kind of frock clamp | |
| CN208342329U (en) | Scroll compressor of automobile air conditioner Moving plate back side processing tool | |
| CN214351083U (en) | Rudder cabin casing OP40 lathe fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |