CN214602074U

CN214602074U - Rivet hole conical surface machining tool for aircraft engine parts

Info

Publication number: CN214602074U
Application number: CN202023256979.9U
Authority: CN
Inventors: 滕玉光; 王浩; 卢超; 齐瑞梓; 刘森
Original assignee: Shenyang Liming Aero Parts Manufacturing Co ltd
Current assignee: Shenyang Liming Aero Parts Manufacturing Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-11-05
Anticipated expiration: 2030-12-29

Abstract

A rivet hole conical surface machining tool for aircraft engine parts belongs to the technical field of aircraft engine manufacturing. A rivet hole conical surface machining tool for aeroengine part includes articulated pincers handle one and pincers handle two of connecting, the head of pincers handle one is provided with the cutting portion, the cutting portion is including the mount pad one that sets gradually, spacing step one and cutting edge, mount pad one is positive hexagonal prism structure, the cutting edge is the conical surface structure, a conical surface for cutting the rivet hole, the head of pincers handle two is provided with the guide portion that corresponds with the cutting portion, guide portion is including the mount pad two that sets gradually, spacing step two and spacing post, mount pad two, spacing step two is equallyd divide and do not be the cylinder structure with spacing post, mount pad two and the head fixed connection of pincers handle two. A rivet hole conical surface machining tool for aeroengine part can realize high quality, the high efficiency processing of complicated structure part dead angle department rivet hole conical surface.

Description

Rivet hole conical surface machining tool for aircraft engine parts

Technical Field

The utility model relates to an aeroengine makes technical field, in particular to rivet hole conical surface machining tool for aeroengine part.

Background

With the upgrading and upgrading of the aero-engine, the structure of the part develops towards the direction of integration, so that a plurality of component functions are integrated by some new parts, the structure of the part becomes complex, and more difficulties are brought to machining.

A certain novel structural part adopts an integrated design, integrates a traditional welding structure, a casting structure and an assembly structure, and a complex structure brings great challenges to machining, especially the conical surface of a rivet hole at the mounting edge. As shown in fig. 1 and 2, since the angle between the machining portion of the tapered surface and the blade surface is an acute angle, when a milling machine or a drilling machine is used according to the conventional machining method, the cutter interferes with the blade surface and cannot reach the machining portion.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem such as the unable processing of complicated part dead angle department rivet hole conical surface that prior art exists, the utility model provides a rivet hole conical surface machining tool for aeroengine part, it can realize high quality, the high efficiency processing of complicated structure part dead angle department rivet hole conical surface.

In order to realize the purpose, the technical scheme of the utility model is that:

a rivet hole conical surface machining tool for an aircraft engine part comprises a first clamp handle and a second clamp handle which are hinged, wherein a cutting part is arranged at the head of the first clamp handle, the cutting part comprises a first mounting seat, a first limiting step and a cutting edge which are sequentially arranged, the first mounting seat is of a regular hexagonal prism structure and is fixedly connected with the head of the first clamp handle, the first limiting step is of a cylindrical structure, and the cutting edge is of a conical surface structure and is used for cutting a conical surface of a rivet hole; the head of the second clamp handle is provided with a guide part corresponding to the cutting part, the guide part comprises a second mounting seat, a second limiting step and a limiting column which are sequentially arranged, the second mounting seat, the second limiting step and the limiting column are equally divided into cylindrical structures, and the second mounting seat is fixedly connected with the head of the second clamp handle.

Preferably, the first forceps handle and the second forceps handle are hinged through a bolt and a nut.

Preferably, the tail parts of the first forceps handle and the second forceps handle are both provided with rubber sleeves.

Preferably, the top of the cutting edge and the bottom of the limiting column are both circular structures and are equal in size.

Preferably, the coaxiality of the outer diameter of the cutting edge and the outer circle of the limiting column is less than 0.02 mm.

Preferably, the cutting portion is made of a hard alloy material.

Preferably, the mounting seat I, the limiting step I and the cutting edge are integrally formed and processed; the mounting seat II, the limiting step II and the limiting column are integrally formed and machined.

The utility model has the advantages that:

1) the processing tool of the utility model can change the cutting direction, change the main force application direction from the axial direction of the hole to the circumferential cutting direction, and avoid the interference part of the part;

2) the cutting part of the utility model adopts hard alloy, which can ensure the cutting performance of the processing tool;

3) the utility model discloses with the axiality control of cutting edge external diameter and spacing portion excircle within 0.02mm, ensure that the rivet hole is coaxial with the conical surface.

4) The limiting column of the utility model can control the depth of the conical surface of the rivet hole in the use process of a fitter, and ensure the qualified size of parts;

5) the utility model discloses a machining tool overall structure is simple, light, and convenient to use, processing is high-efficient, has solved the technical problem of the unable processing of new construction aeroengine part dead angle department rivet hole conical surface, realizes part dead angle department rivet hole conical surface high quality, high efficiency processing to provide a new thinking for the processing of other project organization in similar complicated structure dead angle department.

Additional features and advantages of the invention will be set forth in part in the detailed description which follows.

Drawings

FIG. 1 is a schematic view of a machined part of a complex structural part where a rivet hole conical surface is located in the prior art;

FIG. 2 is a schematic diagram showing a positional relationship between an interference portion and a processed portion in the prior art when a rivet hole conical surface of a complex-structure part is processed;

FIG. 3 is a schematic diagram of the dimensions of a rivet hole and a cone of a blade part according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rivet hole conical surface machining tool for an aircraft engine part according to an embodiment of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

fig. 6 is a schematic front view of a first forceps handle provided in the embodiment of the present invention;

fig. 7 is a schematic top view of a first forceps handle provided in an embodiment of the present invention;

fig. 8 is a schematic front view of a second forceps handle provided in the embodiment of the present invention;

fig. 9 is a schematic top view of a second forceps handle according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a guide portion according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a cutting portion according to an embodiment of the present invention, wherein (a) is a front view of the cutting portion; (b) is a left side view of the cutting portion.

Reference numerals in the drawings of the specification include:

1-a first forceps handle, 2-a second forceps handle, 3-a cutting part, 4-a first mounting seat, 5-a first limiting step, 6-a cutting edge, 7-a guiding part, 8-a second mounting seat, 9-a second limiting step, 10-a limiting column and 11-a bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. As shown in fig. 3, the rivet hole taper surface of a certain blade part is processed as an example.

In the description of the present invention, it is to be understood that the terms "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a" and "an" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In order to solve the problems in the prior art, as shown in fig. 1 to 11, the utility model provides a rivet hole conical surface machining tool for aeroengine parts, including articulated pincers handle one 1 and pincers handle two 2 connected, the head of pincers handle one 1 is provided with cutting portion 3, cutting portion 3 includes mount pad one 4, spacing step one 5 and cutting edge 6 that set gradually, mount pad one 4 is the regular hexagonal prism structure, mount pad one 4 and the head fixed connection of pincers handle one 1, the mount pad one 4 of the regular hexagonal prism structure has guaranteed the stability of cutting portion 3 work, prevent to take place to cluster between mount pad one 4 and the pincers handle one 1, spacing step one 5 is the cylinder structure, cutting edge 6 is the conical surface structure, be used for cutting the conical surface of rivet hole; the head of pincers handle two 2 is provided with guide portion 7 corresponding with cutting portion 3, and guide portion 7 is equallyd divide respectively for the cylinder structure including mount pad two 8, two 9 of spacing step and the spacing post 10 that set gradually, mount pad two 8 and pincers handle two 2's head fixed connection, and spacing post 10 inserts in the rivet hole, makes rivet hole conical surface degree of depth controllable.

In order to ensure the normal work of the first clamp handle 1 and the second clamp handle 2, the first clamp handle 1 and the second clamp handle 2 are hinged through a bolt 11 and a nut.

In order to facilitate use, the tail parts of the forceps handle I1 and the forceps handle II 2 are respectively provided with a rubber sleeve.

In order to realize the conical surface processing of the rivet hole, the top of the cutting edge 6 and the bottom of the limiting column 10 are both circular structures and are equal in size.

In order to ensure that the conical surface of the processed rivet hole is coaxial with the rivet hole, the coaxiality of the outer diameter of the cutting edge 6 and the outer circle of the limiting column 10 is less than 0.02 mm.

In order to ensure the cutting performance of the machining tool, the cutting portion 3 is made of a cemented carbide.

In order to ensure the cutting performance of the machining tool, the mounting seat I4, the limiting step I5 and the cutting edge 6 are integrally formed and machined; the second mounting seat 8, the second limiting step 9 and the limiting column 10 are integrally formed and machined.

In the utility model, the first clamp handle 1 and the second clamp handle 2 can adopt the structure of a clamp in the prior art, the first mounting seat 4 of the cutting part 3 is fixedly mounted at the head of the first clamp handle 1, the conical structure formed by the excircle of the cutting edge 6 is equivalent to a hard alloy conical countersink with a 90-degree taper angle and is used for processing the conical surface of a rivet hole, the first limiting step 5 is arranged between the first mounting seat 4 and the cutting edge 6, and the first limiting step 5 and the second limiting step 9 of the cylindrical structure are convenient for the processing of the cutting part 3 and the guiding part 7 and the normal work of a processing tool; the head of the second plier handle 2 is fixedly provided with a guide part 7, a limit column 10 of the guide part 7 is inserted into the rivet hole to be used as a guide, and the depth of the conical surface of the rivet hole is controllable; the coaxiality of the outer circle of the limiting column 10 and the outer diameter of the cutting edge 6 is controlled within 0.02mm, and the machined conical surface of the rivet hole is ensured to be coaxial with the rivet hole.

The utility model relates to a rivet hole conical surface machining tool's use for aeroengine part:

the position-limiting post 10 of the guide part 7 is placed in the rivet hole, the cutting part 3 is placed at the processed part, the guide part 7 and the cutting part 3 are clamped, and then the cutting part is repeatedly swung along the circumferential direction, and when the cutting edge 6 of the cutting part 3 is attached to the position-limiting post 10 of the guide part 7, the processing of the conical surface is completed.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rivet hole conical surface machining tool for an aircraft engine part is characterized by comprising a first clamp handle and a second clamp handle which are hinged, wherein a cutting part is arranged at the head of the first clamp handle, the cutting part comprises a first mounting seat, a first limiting step and a cutting edge which are sequentially arranged, the first mounting seat is of a regular hexagonal prism structure and is fixedly connected with the head of the first clamp handle, the first limiting step is of a cylindrical structure, and the cutting edge is of a conical surface structure and is used for cutting the conical surface of a rivet hole; the head of the second clamp handle is provided with a guide part corresponding to the cutting part, the guide part comprises a second mounting seat, a second limiting step and a limiting column which are sequentially arranged, the second mounting seat, the second limiting step and the limiting column are equally divided into cylindrical structures, and the second mounting seat is fixedly connected with the head of the second clamp handle.

2. A rivet hole taper machining tool for aircraft engine parts according to claim 1, characterized in that the first tong shank and the second tong shank are hingedly connected by a bolt and a nut.

3. A rivet hole conical surface machining tool for aircraft engine parts according to claim 1, characterized in that the tails of the first tong handle and the second tong handle are both provided with rubber sleeves.

4. A rivet hole taper machining tool for aircraft engine parts according to claim 1, characterized in that the top of the cutting edge and the bottom of the stop post are both circular in configuration and of equal size.

5. A rivet hole conical surface machining tool for aircraft engine parts according to claim 1, characterized in that the coaxiality of the outer diameter of the cutting edge and the outer circle of the limiting column is less than 0.02 mm.

6. A rivet hole taper machining tool for aircraft engine parts according to claim 1, characterized in that the cutting portion is of cemented carbide.

7. A rivet hole conical surface machining tool for an aircraft engine part according to claim 1, characterized in that the first mounting seat, the first limiting step and the cutting edge are integrally formed and machined; the mounting seat II, the limiting step II and the limiting column are integrally formed and machined.