CN111015169A - Crimping tool for bushing flanging - Google Patents

Crimping tool for bushing flanging Download PDF

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Publication number
CN111015169A
CN111015169A CN201911288752.1A CN201911288752A CN111015169A CN 111015169 A CN111015169 A CN 111015169A CN 201911288752 A CN201911288752 A CN 201911288752A CN 111015169 A CN111015169 A CN 111015169A
Authority
CN
China
Prior art keywords
conical
bushing
pressure head
crimping tool
flanging
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.)
Pending
Application number
CN201911288752.1A
Other languages
Chinese (zh)
Inventor
杨文芳
景乾英
王宏安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Aircraft Design and Research Institute of AVIC
Original Assignee
Xian Aircraft Design and Research Institute of AVIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Aircraft Design and Research Institute of AVIC filed Critical Xian Aircraft Design and Research Institute of AVIC
Priority to CN201911288752.1A priority Critical patent/CN111015169A/en
Publication of CN111015169A publication Critical patent/CN111015169A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same

Abstract

The invention provides a crimping tool for flanging a bushing, wherein the flanged bushing is used for an aviation flap and comprises: the bushing conical surface and the bushing round hole. The crimping tool includes: cushion block, conical surface pressure head, shaping pressure head. Wherein: the cushion block is used for being attached to the conical surface of the bushing on one side of the aviation opening cover, the conical pressure head is used for penetrating through the round hole of the bushing from the other side of the aviation opening cover, and first preset pressure is applied to the conical pressure head to enable the bushing to be turned over in advance; and the conical surface pressure head is used for being attached to one side of the aviation opening cover by the conical surface of the bushing, the forming pressure head penetrates through the conical surface pressure head, and second preset pressure is applied to the forming pressure head to enable the bushing to finish secondary flanging. The combined tool is used for installing the airplane bushing, and can improve the working efficiency and the installation quality of the bushing flanging; the structure has simple form, convenient operation, high precision and high reliability; the requirement of model development is met, and the technical progress of the domestic aviation standard component is promoted.

Description

Crimping tool for bushing flanging
Technical Field
The invention relates to the technical field of mounting tools for machine bushings, in particular to a crimping tool for bushing flanging.
Background
The original airplane covering cap is directly connected by adopting nuts and bolts, the covering cap is easy to damage in the repeated dismounting process, and the covering cap is easier to damage by repeated dismounting of the bolts and the nuts due to the fact that a large amount of composite covering caps are used at present, so that the covering cap is prevented from being damaged by installing the bush; the original mounting tool is formed by one-time flanging, the lining is easy to crack, and the opening cover is easy to damage in the compression joint process.
With the continuous improvement of the requirements on the reliability and maintainability of the domestic airplane, the current technology cannot meet the requirements on high precision and high reliability.
Disclosure of Invention
The invention aims to:
the installation tool for the airplane bushing is improved, a group of installation tools are designed on the premise of ensuring the installation quality, the bushing is installed on the airplane opening cover through the matching use of the cushion block 1, the conical surface pressure head 2 and the forming pressure head 3, and after the flanging tool is used, the installation efficiency and quality of the bushing are improved.
The technical scheme of the invention is as follows:
a crimping tool for a bush flanging comprises a cushion block 1, a conical surface pressure head 2 and a forming pressure head 3, wherein the conical surface angles of the cushion block 1 and the conical surface pressure head 2 are consistent with the conical surface angle of a bush; when the bushing is flanged, the cushion block 1 and the conical surface of the bushing are attached to one side of the opening cover, the conical pressure head 2 penetrates through the round hole of the bushing from the other side of the opening cover, preset pressure is applied to the conical pressure head to enable the bushing to be flanged in advance, then the conical pressure head 2 and the conical surface of the bushing are attached to one side of the opening cover, the forming pressure head 3 penetrates through the conical pressure head, and preset pressure is applied to the forming pressure head to enable the bushing to be flanged.
The invention has the beneficial effects that:
a) the combined tool is used for mounting the airplane bushing, and can improve the working efficiency and mounting quality of the bushing flanging;
b) the structure has simple form, convenient operation, high precision and high reliability;
c) the requirement of model development is met, and the technical progress of the domestic aviation standard component is promoted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a crimping tool for bushing flanging according to an embodiment of the invention;
FIG. 2 is a schematic view of a bushing flange according to an embodiment of the present invention;
FIG. 3 is a schematic view of a cuff for a liner according to another embodiment of the present invention;
FIG. 4 is a schematic view of an aircraft flap bushing after being flanged in accordance with an embodiment of the present invention;
FIG. 5 is a schematic size diagram of a spacer 1 according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the dimensions of the conical indenter 2 according to one embodiment of the present invention;
fig. 7 is a schematic size view of the forming ram 3 according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Features and illustrative embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method set forth below, but rather covers any improvements, substitutions and modifications in structure, method, and apparatus without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.
It should be noted that, in the case of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other, and the respective embodiments may be mutually referred to and cited. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic structural view of a crimping tool for bushing flanging according to an embodiment of the invention; FIG. 2 is a schematic view of a bushing flange according to an embodiment of the present invention; FIG. 3 is a schematic view of a cuff for a liner according to another embodiment of the present invention; fig. 4 is a schematic view of an aircraft flap bushing after being flanged according to an embodiment of the invention.
Referring to fig. 1-4, a crimping tool for flanging a bushing for an aircraft door. Wherein, the bush includes: the bushing conical surface and the bushing round hole. The crimping tool is opened with including: cushion 1, conical surface pressure head 2, shaping pressure head 3.
Wherein: the cushion block 1 is used for being attached to the conical surface of the bushing on one side of the aviation opening cover, the conical pressure head 2 is used for penetrating through the circular hole of the bushing from the other side of the aviation opening cover, and first preset pressure is applied to the conical pressure head 2 to enable the bushing to be turned over in advance; the conical surface pressure head 2 is used for being attached to one side of the aviation opening cover through the conical surface of the lining, the forming pressure head 3 penetrates through the conical surface pressure head 2, and second preset pressure is applied to the forming pressure head 3 to enable the lining to complete secondary flanging.
In some embodiments, one end of the cushion block 1 is a cylinder, the other end is a truncated cone, and a hole is formed in one end of the truncated cone towards one end of the cylinder.
In some embodiments, one end of the conical indenter 2 is a large cylinder, the other end is a small cylinder, and the large cylinder and the small cylinder are connected by a cone frustum.
In some embodiments, the small cylinder of the conical indenter 2 is used to pass through the bushing bore and into the inside of the bore of the spacer 1 when the bushing is pre-flanged.
In some embodiments, one end of the forming head 3 is a large cylinder, the other end is a small cylinder, and the large cylinder and the small cylinder are connected by a cone frustum; a hole is formed in one end of the small cylinder towards one end of the cone frustum;
when the bushing is flanged for the second time, the small cylinder of the conical pressure head 2 is used for penetrating through the inside of the hole of the forming pressure head 3.
In some embodiments, the first preset pressure is 8 kN; the second preset pressure was 15 kN.
In some embodiments, the taper angle of the frustums of the spacer 1 and the taper indenter 2 is the same as the taper angle of the bushing.
In some embodiments, the taper angle of the frustum of the cone of the spacer 1 and the taper indenter 2 is 100 ° to the taper angle of the bushing.
In some embodiments, a method of crimping a bushing with a crimping tool includes the steps of:
attaching the cushion block 1 and the conical surface of the bush on one side of the aviation flap;
the conical pressure head 2 penetrates through the circular hole of the bush from the other side of the opening cover, and 8kN of pressure is applied to the conical pressure head 2 to pre-flanging the bush;
and (3) attaching the conical surface pressure head 2 and the conical surface of the bush on one side of the opening cover, penetrating the forming pressure head 3 through the conical surface pressure head, and applying 15kN pressure on the forming pressure head to enable the bush to finish flanging.
In some embodiments, the structural profile of the crimping tool described above is as follows:
a) the conical surfaces of the cushion block and the conical surface of the pressure head are consistent with the conical surface of the bushing, so that the pressing fit is ensured to be tight during compression joint;
b) the forming pressure head ensures the flatness of the final flanging of the bushing;
c) the conical indenter is used twice for the first bushing flanging, the first as a pre-flanging tool, as shown in fig. 2, and the second as a positioning tool, as shown in fig. 3.
In some embodiments, the crimping tool for the flanging of the bush comprises a cushion block 1, a conical surface pressure head 2 and a forming pressure head 3, wherein the conical surface angles of the cushion block 1 and the conical surface pressure head 2 are consistent with the conical surface angle of the bush; when the bushing is flanged, the cushion block 1 and the conical surface of the bushing are attached to one side of the opening cover, the conical pressure head 2 penetrates through the round hole of the bushing from the other side of the opening cover, preset pressure 8kN is applied to the conical pressure head to enable the bushing to be flanged in advance, the conical pressure head 2 and the conical surface of the bushing are attached to one side of the opening cover, the forming pressure head 3 penetrates through the conical pressure head, preset pressure 15kN is applied to the forming pressure head, and the bushing is flanged.
The crimping tool of the embodiment of the invention can be applied to bushing flanging with the inner diameter of 6mm and 10mm and the British diameters of 1/4in and 3/8 in. The tool is made of alloy tool steel Cr12MoV, and the manufacturability of the too large or too small diameter specification is poor.
The method for manufacturing the crimping tool of the embodiment of the invention comprises the following steps:
1, preparing materials, and processing a blank by adopting a cold heading process;
2, machining the sizes of the parts by adopting a machining mode after heat treatment.
FIG. 5 is a schematic size diagram of a spacer 1 according to an embodiment of the present invention; FIG. 6 is a schematic diagram of the dimensions of the conical indenter 2 according to one embodiment of the present invention; fig. 7 is a schematic size view of the forming ram 3 according to an embodiment of the present invention.
Referring to fig. 5 to 7, in order to optimize the flanging effect, the related parameters are optimized through experiments. For example, the conical surface angles of the conical frustums of the cushion block 1 and the conical surface indenter 2 and the conical surface angle of the bushing are both 100 degrees, and the positive and negative errors can be 1 degree.
It should be noted that the above-mentioned flow operations may be combined and applied in different degrees, and for simplicity, implementation manners of various combinations are not described again, and those skilled in the art may flexibly adjust the sequence of the above-mentioned operation steps according to actual needs, or flexibly combine the above-mentioned steps, and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims (8)

1. A crimping tool for flanging a bushing for an aircraft door, wherein the bushing comprises: bushing conical surface and bushing round hole, its characterized in that, crimping tool includes:
cushion (1), conical surface pressure head (2), shaping pressure head (3), wherein:
the cushion block (1) is used for being attached to the conical surface of the bushing on one side of the aviation opening cover, the conical surface pressure head (2) is used for penetrating through the circular hole of the bushing from the other side of the aviation opening cover, and first preset pressure is applied to the conical surface pressure head (2) to enable the bushing to be turned over in advance;
the conical surface pressure head (2) is used for being attached to one side of the aviation opening cover through the conical surface of the bushing, the forming pressure head (3) penetrates through the conical surface pressure head (2), and second preset pressure is applied to the forming pressure head (3) to enable the bushing to complete secondary flanging.
2. The crimping tool of claim 1, wherein:
one end of the cushion block (1) is a cylinder, the other end of the cushion block is a cone frustum, and a hole is formed in one end of the cone frustum towards one end of the cylinder.
3. The crimping tool of claim 2, wherein:
one end of the conical pressure head (2) is a large cylinder, the other end of the conical pressure head is a small cylinder, and the large cylinder and the small cylinder are connected by a cone frustum;
when the bushing is pre-flanged, a small cylinder of the conical pressure head (2) is used for penetrating through a circular hole of the bushing and entering the inside of a hole of the cushion block (1).
4. The crimping tool of claim 2, wherein:
one end of the forming pressure head (3) is a large cylinder, the other end of the forming pressure head is a small cylinder, and the large cylinder and the small cylinder are connected by a cone frustum; a hole is formed in one end of the small cylinder towards one end of the cone frustum;
when the bushing is flanged for the second time, the small cylinder of the conical pressure head (2) is used for penetrating through the inside of the hole of the forming pressure head (3).
5. The crimping tool of claim 2, wherein:
the first preset pressure is 8 kN;
the second preset pressure was 15 kN.
6. The crimping tool of claim 1, wherein:
the conical surface angles of the conical platforms of the cushion block (1) and the conical surface pressure head (2) are consistent with the conical surface angle of the lining.
7. The crimping tool of claim 1, wherein:
the conical surface angles of the conical platforms of the cushion block (1) and the conical surface pressure head (2) and the conical surface angle of the lining are both 100 degrees.
8. The crimping tool of any of claims 1-7, wherein the method of crimping a bushing by the crimping tool comprises the steps of:
attaching the cushion block (1) and the conical surface of the bush to one side of the aviation flap;
the conical surface pressure head (2) penetrates through the circular hole of the bushing from the other side of the opening cover, and 8kN of pressure is applied to the conical surface pressure head (2) to pre-flanging the bushing;
and (3) attaching the conical surface pressure head (2) and the conical surface of the bush on one side of the opening cover, penetrating the forming pressure head (3) through the conical surface pressure head, and applying 15kN pressure on the forming pressure head to enable the bush to finish flanging.
CN201911288752.1A 2019-12-13 2019-12-13 Crimping tool for bushing flanging Pending CN111015169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911288752.1A CN111015169A (en) 2019-12-13 2019-12-13 Crimping tool for bushing flanging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911288752.1A CN111015169A (en) 2019-12-13 2019-12-13 Crimping tool for bushing flanging

Publications (1)

Publication Number Publication Date
CN111015169A true CN111015169A (en) 2020-04-17

Family

ID=70210999

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911288752.1A Pending CN111015169A (en) 2019-12-13 2019-12-13 Crimping tool for bushing flanging

Country Status (1)

Country Link
CN (1) CN111015169A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1307740A (en) * 1970-10-21 1973-02-21 Plessey Co Ltd Electrically insulating mounting for an electrically conductive member
JPH08232944A (en) * 1995-02-28 1996-09-10 Fuji Kiko Co Ltd Manufacture, forming die and forming punch of metallic sheet bearing part
CN204262738U (en) * 2014-11-28 2015-04-15 成都飞机工业(集团)有限责任公司 The device that enlarging lining is installed on multiple material
CN205464005U (en) * 2016-03-08 2016-08-17 浙江镜湖建设集团有限公司 Municipal construction is with flaring flanging device of compound water pipe
CN107855393A (en) * 2017-11-14 2018-03-30 西安交通大学 A kind of method of mould pressing plate type heat exchanger grommet
CN107952896A (en) * 2017-11-14 2018-04-24 西安交通大学 A kind of method of multi-pass flaring shaping plate heat exchanger grommet
CN208662333U (en) * 2018-07-30 2019-03-29 成都飞机工业(集团)有限责任公司 A kind of forming mounting device being flared bushing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1307740A (en) * 1970-10-21 1973-02-21 Plessey Co Ltd Electrically insulating mounting for an electrically conductive member
JPH08232944A (en) * 1995-02-28 1996-09-10 Fuji Kiko Co Ltd Manufacture, forming die and forming punch of metallic sheet bearing part
CN204262738U (en) * 2014-11-28 2015-04-15 成都飞机工业(集团)有限责任公司 The device that enlarging lining is installed on multiple material
CN205464005U (en) * 2016-03-08 2016-08-17 浙江镜湖建设集团有限公司 Municipal construction is with flaring flanging device of compound water pipe
CN107855393A (en) * 2017-11-14 2018-03-30 西安交通大学 A kind of method of mould pressing plate type heat exchanger grommet
CN107952896A (en) * 2017-11-14 2018-04-24 西安交通大学 A kind of method of multi-pass flaring shaping plate heat exchanger grommet
CN208662333U (en) * 2018-07-30 2019-03-29 成都飞机工业(集团)有限责任公司 A kind of forming mounting device being flared bushing

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