CN115502765B

CN115502765B - A kind of fairing wind cover length processing clamping device and method

Info

Publication number: CN115502765B
Application number: CN202211331940.XA
Authority: CN
Inventors: 杨芳; 王敏辉
Original assignee: Jiangnan Industries Group Co Ltd
Current assignee: Jiangnan Industries Group Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2025-03-14
Anticipated expiration: 2042-10-28
Also published as: CN115502765A

Abstract

The invention discloses a length processing and clamping device and method for a fairing, comprising a mandrel, a positioning block, a supporting ring, a jacket and a tailstock, wherein the tailstock consists of a connecting plate, a first ring seat and a second ring seat which are correspondingly and coaxially welded at two ends of the connecting plate, and a mounting shaft which is coaxially welded on the second ring, the free end of the mounting shaft and one end of the mandrel are Morse cone shaft heads, the positioning block and the supporting ring are coaxially sleeved on the mandrel, the distance between the opposite surfaces is consistent with the required processing length of the fairing, the fairing is tightly sleeved on the positioning block and the supporting ring, the positioning block is positioned at the other end of the mandrel, the jacket is coaxially rotatably arranged in the first circular ring seat and can be coaxially sleeved outside the positioning block and move, and when the end surface of the jacket adjacent to the second circular ring and the end surface of the positioning block far away from the supporting ring are positioned on the same plane, a clamping cavity matched with the wall thickness of the fairing wind is formed between the end surface of the jacket adjacent to the second circular ring and the end surface of the positioning block far away from the supporting ring. The invention solves the technical problem of how to clamp the rectification fan cover conveniently and without damage.

Description

Device and method for machining and clamping length of fairing

Technical Field

The invention relates to the technical field of clamping devices, in particular to a rectifying fan cover length machining clamping device and method.

Background

The fairing parts are mainly used for drag reduction of the head of an aircraft, are semi-fusiform streamline bodies and are formed by spinning aluminum pipes, and because the spinning cannot accurately control the length, the fairing with the length larger than the required length is usually spun firstly, and then the fairing parts are clamped on a lathe by adopting a clamping device to remove redundant parts of the front section and the rear section so as to enable the fairing parts to reach the required length. At present, a multi-claw self-centering chuck is generally adopted to clamp the self-centering chuck, obviously, the clamping and positioning are difficult, time consumption and low accuracy are realized, especially, the clamping and positioning of the small end of the cambered surface are realized, and the situation that deformation and even damage occur due to overlarge stress on the contact part of the fairing and the chuck is easy to occur because the inside of the fairing is hollow and is made of aluminum, so that the production efficiency is low, the machining precision is low and the quality is poor is caused.

Disclosure of Invention

In view of the shortcomings in the background art, the invention provides a fairing length processing clamping device and a fairing length processing clamping method, which are used for solving the problem of clamping a fairing conveniently and without damage.

In order to solve the technical problems, the invention provides a fairing length processing clamping device which comprises a mandrel, a positioning block, a supporting ring, a jacket and a tail frame, wherein the tail frame is composed of a connecting plate, a first ring seat and a second ring seat which are vertically and correspondingly and coaxially welded at two ends of the connecting plate, and a mounting shaft which is coaxially welded at one side of the second ring seat, which is far away from the first ring seat, the free end of the mounting shaft and one end of the mandrel are Morse cone shaft heads, the positioning block and the supporting ring are coaxially sleeved on the mandrel, the distance between the surfaces which are far away from each other is consistent with the required processing length of the fairing, the fairing is sleeved on the positioning block and the supporting ring, when the fairing is sleeved on the position, the peripheral walls of the positioning block and the supporting ring are all propped against the inner wall of the positioning block, the positioning block is positioned at the other end of the mandrel, the jacket is coaxially and rotatably mounted in the first ring seat, and the positioning block can be coaxially sleeved on the outer positioning block and move, and when the adjacent second ring is far away from the same plane, and the wall thickness of the fairing is far away from the same plane as the supporting ring, and the cavity is formed.

In one embodiment of the invention, the support ring is provided with a set screw for fastening it to the spindle.

In one embodiment of the invention, the positioning block is provided with a positioning pin and a pin which are respectively fastened on the mandrel in the axial direction and the radial direction.

In one embodiment of the invention, the outer peripheral walls of the positioning block and the supporting ring are covered with a buffer pad.

The invention also provides a fairing length processing clamping method, which is performed in the fairing length processing clamping device and comprises the following steps:

Step S1, correspondingly mounting the mandrel and the Morse taper shaft head of the mounting shaft on a lathe spindle box and a lathe tailstock, wherein the axes of the mandrel and the Morse taper shaft head of the mounting shaft are coincident;

s2, sleeving the rectifying fan cover to be processed on the positioning block and the supporting ring, so that the outer peripheral walls of the positioning block and the supporting ring are abutted against the inner wall of the rectifying fan cover;

s3, controlling a lathe tailstock to move towards the positioning block along the axial direction of the mounting shaft until the end face, adjacent to the second circular ring, of the jacket and the end face, far away from the supporting ring, of the positioning block are located on the same plane, so as to clamp the fairing;

S4, after the lathe controls the turning tool to move to the position, where the rectifying fan cover is located at the end face, close to the second circular ring, of the jacket, cutting off the part, where the rectifying fan cover is located, where the rectifying fan cover is far away from the end of the supporting ring, and then controlling the turning tool to move along the axial direction of the mandrel towards the direction of the supporting ring for a required processing length, and cutting off the part, where the rectifying fan cover is located, where the rectifying fan cover is far away from the end of the positioning block;

and S5, controlling the lathe tailstock to move along the axial direction of the mounting shaft towards the direction deviating from the positioning block, moving until the jacket is separated from the fairing, and then taking down the fairing.

Compared with the prior art, the technical scheme has the advantages that the supporting ring, the positioning block and the jacket which can be coaxially sleeved outside the positioning block and move are adopted, the distance between the surfaces of the supporting ring and the positioning block which are opposite to each other is set to be consistent with the required processing length of the fairing, and when the jacket moves to the position that the end surface of the jacket adjacent to the second circular ring is located on the same plane with the end surface of the positioning block which is far away from the supporting ring, a clamping cavity matched with the wall thickness of the fairing is formed between the end surface of the jacket adjacent to the second circular ring and the end surface of the positioning block which is located on the same plane with the supporting ring, so that when the fairing needs to be clamped, the fairing is firstly sleeved on the supporting ring and the positioning block and moves axially, the jacket is moved until the outer peripheral walls of the positioning block and the supporting ring are abutted against the inner wall of the positioning block, and then the jacket is moved until the end surface of the jacket adjacent to the second circular ring and the end surface of the positioning block which is far from the supporting ring are located on the same plane, thereby the fairing is clamped conveniently and atraumatically, the fairing is greatly improved, and the processing precision and quality are ensured.

Drawings

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the use state structure of the present invention;

FIG. 3 is a schematic view of the structure of the tailstock of the present invention;

The reference numerals of the specification indicate that 1, a mandrel, 2, a positioning block, 3, a supporting ring, 4, a jacket, 5, a tailstock, 51, a connecting plate, 52, a first circular ring seat, 53, a second circular ring seat, 54, a mounting shaft, 6, a fairing, 7, a set screw, 8, a positioning nail, 9 and a pin.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.

With respect to the foregoing and other features, aspects and advantages of the invention, they will become apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or rear, etc., are only directions referring to the drawings. Thus, directional terminology is used for the purpose of illustration and is not intended to be limiting of the invention, and furthermore, like reference numerals refer to like elements throughout the embodiments.

Referring to fig. 1, fig. 2 and fig. 3, a fairing length processing clamping device is characterized by comprising a mandrel 1, a positioning block 2, a supporting ring 3, a jacket 4 and a tail frame 5, wherein the tail frame 5 is composed of a connecting plate 51, a first circular ring seat 52 and a second circular ring seat 53 which are vertically and downwards correspondingly and coaxially welded at two ends of the connecting plate 51, and a mounting shaft 54 coaxially welded at one side, which is far away from the first circular ring seat 52, of the second circular ring seat 53, the free end of the mounting shaft 54 and one end of the mandrel 1 are Morse cone shaft heads, the positioning block 2 and the supporting ring 3 are coaxially sleeved on the mandrel 1, the distance between the surfaces which are far away from each other is consistent with the required processing length of the fairing 6, the fairing 6 is sleeved on the positioning block 2 and the supporting ring 3, and when the fairing 6 is sleeved in place, the outer peripheral walls of the positioning block 2 and the supporting ring 3 are abutted against the inner walls of the positioning block, so that the positioning block is positioned, the clamping is convenient and accurate, and the deformation resistance of the fairing 6 is greatly improved, and the supporting ring 3 is abutted against the positioning block 2. The positioning block 2 is located at the other end of the mandrel 1, the jacket 4 is coaxially rotatably mounted in the first circular ring seat 52, and can be coaxially sleeved outside the positioning block 2 and move, and when the end surface of the jacket 4 adjacent to the second circular ring and the end surface of the positioning block 2 far away from the supporting ring 3 are located on the same plane, a clamping cavity matched with the wall thickness of the rectified wind is formed between the end surface and the end surface of the jacket. Through the setting of support ring 3, locating piece 2 and can coaxial cover establish outside locating piece 2 and jacket 4 that removes for when needs press from both sides tightly to fairing 6, as long as put fairing 6 cover on support ring 3 and locating piece 2 and along axial displacement earlier, it supports to the outer perisporium of locating piece 2 and support ring 3 and leans on its inner wall, and the jacket 4 is removed again, and the terminal surface that is close to the second ring of jacket 4 and the terminal surface that locating piece 2 kept away from support ring 3 are located the coplanar can, thereby realized convenient and the technical effect that the fairing 6 was pressed from both sides tightly with not damaging.

The support ring 3 is provided with a set screw 7 for fastening the support ring on the mandrel 1, the positioning block 2 is provided with a positioning nail 8 and a pin 9 for respectively fastening the support ring on the mandrel 1 along the axial direction and the radial direction, so that the support ring 3, the positioning block 2 and the mandrel 1 are connected more firmly, and the stability and the reliability of the support of the rectification fan cover 6 are improved.

The outer peripheral walls of the positioning block 2 and the supporting ring 3 are covered with buffer pads, so that deformation resistance of the rectifying fan cover 6 against the supporting ring 3 and the positioning block 2 is improved, and the problem that the rectifying fan cover 6 is damaged due to overlarge supporting force is effectively avoided.

The fairing length machining clamping method is performed in the fairing length machining clamping device and comprises the following steps of:

Step S1, correspondingly mounting the mandrel 1 and the Morse taper shaft heads of the mounting shaft 54 on a lathe headstock and a lathe tailstock, wherein the axes of the mandrel 1 and the Morse taper shaft heads of the mounting shaft 54 are overlapped;

s2, sleeving the to-be-processed fairing 6 on the positioning block 2 and the supporting ring 3, so that the outer peripheral walls of the positioning block 2 and the supporting ring 3 are abutted against the inner wall of the fairing 6;

step S3, controlling a lathe tailstock to move towards the positioning block 2 along the axial direction of the mounting shaft 54 until the end surface of the jacket 4 adjacent to the second circular ring and the end surface of the positioning block 2 far away from the supporting ring 3 are positioned on the same plane to clamp the fairing 6;

Step S4, after the lathe controls the turning tool to move to the position where the fairing 6 is positioned at the end face of the jacket 4 adjacent to the second circular ring, cutting off the part of the fairing 6 away from the end of the support ring 3, and after the turning tool is controlled to move along the axial direction of the mandrel 1 towards the direction of the support ring 3 for a required processing length, cutting off the part of the fairing 6 away from the end of the positioning block 2;

And S5, controlling the lathe tailstock to move along the axial direction of the mounting shaft 54 towards the direction away from the positioning block 2 until the jacket 4 is separated from the fairing 6, and then taking down the fairing 6. The method has the advantages that the technical effect of clamping the rectification fan housing 6 conveniently and quickly without damage is achieved, the use is convenient, the clamping and positioning are quick and accurate, and the machining precision and quality are effectively guaranteed.

In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicating between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.

Claims

1. A fairing wind shield length processing clamping device, characterized in that it includes a core shaft, a positioning block, a support ring, a jacket and a tail frame, wherein the tail frame is composed of a connecting plate, a first circular ring seat and a second circular ring seat coaxially welded vertically downward at both ends of the connecting plate, and a mounting shaft coaxially welded on the side of the second circular ring seat away from the first circular ring seat, the free end of the mounting shaft and one end of the core shaft are both Morse cone shaft heads, the positioning block and the support ring are coaxially sleeved on the core shaft, and the distance between the faces facing each other is the same as the required addition of the fairing wind shield. The lengths of the workpieces are consistent, the fairing cover sleeve is placed on the positioning block and the support ring, when the fairing cover sleeve is put in place, the outer peripheral walls of the positioning block and the support ring are both against the inner walls thereof, the positioning block is located on the other end of the core shaft, the jacket is coaxially rotatably installed in the first circular ring seat, and it can be coaxially sleeved outside the positioning block and move, when the end face of the jacket adjacent to the second circular ring and the end face of the positioning block away from the support ring are located in the same plane, a clamping cavity adapted to the wall thickness of the fairing cover is formed between the two;

The support ring is provided with a set screw for fastening it to the core shaft; the positioning block is provided with a positioning nail and a pin for fastening it to the core shaft in the axial direction and radial direction respectively; the outer peripheral walls of the positioning block and the support ring are covered with a buffer pad.

2. A method for processing and clamping the length of a fairing, characterized in that it is carried out in the fairing length processing and clamping device according to claim 1, comprising the following steps:

Step S1, installing the Morse taper shaft heads of the mandrel and the mounting shaft on the lathe headstock and the lathe tailstock respectively, with the axes of the two coinciding;

Step S2, placing the fairing cover to be processed on the positioning block and the support ring, so that the outer peripheral walls of the positioning block and the support ring are against the inner wall of the fairing cover;

Step S3, controlling the tailstock of the lathe to move along the axial direction of the mounting shaft toward the positioning block, until the end surface of the jacket adjacent to the second circular ring and the end surface of the positioning block away from the support ring are located in the same plane to clamp the fairing;

Step S4, the lathe controls the turning tool to move to the end surface of the fairing hood located at the jacket adjacent to the second circular ring, and cuts off the fairing hood from this location to the end away from the support ring, and then controls the turning tool to move along the axial direction of the mandrel toward the support ring by the required processing length, and then cuts off the fairing hood from this location to the end away from the positioning block;

Step S5, controlling the tailstock of the lathe to move along the axial direction of the mounting shaft in a direction away from the positioning block until the jacket is separated from the fairing cover, and then removing the fairing cover.