CN112872275A - Heading process of small-sized connecting long bolt for aviation - Google Patents
Heading process of small-sized connecting long bolt for aviation Download PDFInfo
- Publication number
- CN112872275A CN112872275A CN202110035605.4A CN202110035605A CN112872275A CN 112872275 A CN112872275 A CN 112872275A CN 202110035605 A CN202110035605 A CN 202110035605A CN 112872275 A CN112872275 A CN 112872275A
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- China
- Prior art keywords
- die
- long bolt
- adjusting
- die holder
- rod piece
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
- B21J13/03—Die mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The application discloses an aviation small-sized connecting long bolt upsetting process in the technical field of upsetting processes, wherein a forming die is used for upsetting a long bolt, the forming die comprises an upper die holder, a lower die holder and an adjusting die body positioned in the middle, the upper die holder and the lower die holder are coaxially arranged, the adjusting die body is detachably connected with the upper die holder and the lower die holder, and the adjusting die body is provided with a plurality of groups and gradually increases in height; during processing, A, preparation: preparing a rod piece, selecting an adjusting die body with corresponding length, and fixing an upper die base, the adjusting die body and a lower die base in sequence; B. heating the material part of the rod piece; C. placing the rod piece into the through hole, starting equipment, upsetting the rod piece and obtaining a polished rod bolt; D. and machining threads to obtain the finished bolt. The long bolt with the corresponding size can be processed only by changing the size of the adjusting die body, and the processing problem of the long bolt with the total length of 110 mm-280 mm is solved.
Description
Technical Field
The invention relates to the technical field of upsetting processes of bolts, in particular to an upsetting process of a small-size connecting long bolt for aviation, and particularly relates to an upsetting process of a long bolt with the total length of 110-280 mm.
Background
The small-sized bolt is an indispensable product for connecting airplane parts and aeroengine parts as a connecting piece, the bolt head and the rod part need to bear force, so large bar materials cannot be used for direct processing, if the large bar materials are directly processed, mechanics cannot be guaranteed, the direction of a two flow line is not along the force bearing direction, and materials are wasted. At present, small bolts are upset by small upsetting equipment, can upset bolts with high accuracy, and can meet the requirement of mass production of bolts with the total length within 110, but the structure of the small upsetting equipment is too complex, the stroke is limited, and the bolts with the total length of 110 mm-280 mm cannot be upset on the small upsetting equipment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a process capable of adjusting a die to further realize upsetting of long bolts with different lengths.
The small-size connecting long bolt upsetting process for aviation comprises the steps of upsetting a long bolt by using a forming die, wherein the middle part of the forming die is provided with a through hole matched with the appearance of the long bolt, the forming die comprises an upper die holder, a lower die holder and an adjusting die body between the upper die holder and the lower die holder, the upper die holder and the lower die holder are coaxially arranged, the adjusting die body is detachably connected with the upper die holder and the lower die holder, and the adjusting die bodies are provided with a plurality of groups and gradually increase in height;
when the die is machined, A, preparing a rod piece, wherein the diameter of the rod piece is the same as that of the long bolt, the length of the rod piece is equal to that of the long bolt, selecting an adjusting die body with corresponding length, and sequentially fixing an upper die base, the adjusting die body and a lower die base;
B. heating the material part of the rod piece;
C. placing the rod piece into the through hole, starting equipment, upsetting the rod piece and obtaining a polished rod bolt;
D. and machining threads to obtain the finished bolt.
The working principle of the invention is as follows: the forming die comprises an upper die holder, a lower die holder and an adjusting die body positioned in the middle, wherein the upper die holder, the lower die holder and the adjusting die body are coaxially arranged, the adjusting die body is detachably connected with the upper die holder and the lower die holder, the adjusting die body is provided with a plurality of groups, the heights of the adjusting die body are gradually increased, specifically, the heights of the upper die holder and the lower die holder are 35mm, and the height of the adjusting die body is 110-70-280-70.
The invention has the beneficial effects that the long bolt with the corresponding size can be processed only by changing the size of the adjusting die body, and the defects of the long bolt with the total length of 110-280 mm, low precision, small batch, long length and incapability of upsetting by using the traditional upsetting method are overcome.
Furthermore, a handle is arranged on the ring surface of the adjusting die body. The handle is convenient for the taking and placing operation of the forming die.
Further, the anchor ring of upper die base is equipped with 1 ~ 3 exhaust holes, the exhaust hole sets up towards the through-hole. The air in the through hole is rapidly exhausted by arranging the exhaust hole.
Further, the upper die base is connected with the adjusting die body and/or the adjusting die body is connected with the lower die base through a fixing bolt. This is one of the detachable connection methods, and is fixed by inserting a fixing bolt.
Further, the number of the fixing bolts is 4. The number of the fixing bolts is preferably 4, and the fixing bolts are annularly arranged on the periphery of the through hole.
Further, the upper die base and the lower die base are provided with thread grooves, and the adjusting die body is relatively provided with a thread sleeve in threaded connection with the thread grooves. This is the second way of detachable connection, and the fixation is achieved by screwing.
Further, the material of the forming die is 5CrNiMo or H13. The strength of the material meets the requirements of using and processing the die.
Another object of the present invention is to provide a molding die including any of the above embodiments.
Drawings
FIG. 1 is a schematic structural view of a molding die of example 1 of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of a molding die of example 2 of the present invention;
fig. 4 is a cross-sectional view of fig. 3.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the die comprises an upper die holder 1, an adjusting die body 2, a lower die holder 3, a through hole 4, a fixing bolt 5, an exhaust hole 6, a handle 7 and a threaded sleeve 8.
The embodiment 1 of the forming die is shown in fig. 1-2, the forming die is made of 5CrNiMo or H13, a through hole 4 matched with the shape of a long bolt is formed in the middle of the forming die, the forming die comprises an upper die holder 1, a lower die holder 3 and an adjusting die body 2 positioned in the middle, the upper die holder 1, the lower die holder 3 and the adjusting die body 2 are coaxially arranged, the adjusting die body 2 is provided with a plurality of groups and gradually increased in height, a handle 7 is arranged on the ring surface of the adjusting die body 2, 1 exhaust hole 6 is formed in the ring surface of the upper die holder 1, the exhaust hole 6 faces the through hole 4, and the upper die holder 1 is connected with the adjusting die body 2 and.
The embodiment 2 of the forming die is shown in fig. 3-4, the forming die is made of 5CrNiMo or H13, a through hole 4 matched with the shape of a long bolt is formed in the middle of the forming die, the forming die comprises an upper die holder 1, a lower die holder 3 and an adjusting die body 2 positioned in the middle, the upper die holder 1 and the lower die holder 3 are coaxially arranged, the adjusting die body 2 is provided with a plurality of groups and gradually increased in height, a handle 7 is arranged on the ring surface of the adjusting die body 2, 2 exhaust holes 6 are formed in the ring surface of the upper die holder 1, and the exhaust holes 6 face; the upper die holder 1 and the lower die holder 3 are provided with thread grooves, and the adjusting die body 2 is relatively provided with a thread sleeve 8 in threaded connection with the thread grooves.
In the embodiment 1 and the embodiment 2, the heights of the upper die holder 1 and the lower die holder 3 are 35mm, the height of the adjusting die body 2 is 40-210 mm, and multiple groups of adjusting die bodies are arranged, specifically, the heights are 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 130 mm, 150mm, 170mm, 190mm and 210 mm.
Taking example 1 as an example, the upsetting process of the small connecting long bolt for aviation uses a forming die to upset the long bolt,
during processing, A, preparation: preparing a rod piece, wherein the diameter of the rod piece is the same as that of the long bolt, the length of the rod piece is equal to that of the long bolt, selecting an adjusting die body 2 with corresponding length, and sequentially fixing an upper die base 1, the adjusting die body 2 and a lower die base 3;
B. heating the material part of the rod piece;
C. placing the rod piece into the through hole 4, starting the device, upsetting the rod piece and obtaining a polished rod bolt;
D. and machining threads to obtain the finished bolt.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The small-sized connection long bolt upsetting process for aviation is characterized in that: the method comprises the following steps that a forming die is used for upsetting the long bolt, a through hole matched with the shape of the long bolt is formed in the middle of the forming die, the forming die comprises an upper die holder, a lower die holder and an adjusting die body, the upper die holder and the lower die holder are coaxially arranged, the adjusting die body is positioned between the upper die holder and the lower die holder and detachably connected with the upper die holder and the lower die holder, and the adjusting die body is provided with a plurality of groups and gradually increases in;
when the die is machined, A, preparing a rod piece, wherein the diameter of the rod piece is the same as that of the long bolt, the length of the rod piece is equal to that of the long bolt, selecting an adjusting die body with corresponding length, and sequentially fixing an upper die base, the adjusting die body and a lower die base;
B. heating the material part of the rod piece;
C. placing the rod piece into the through hole, starting equipment, upsetting the rod piece and obtaining a polished rod bolt;
D. and machining threads to obtain the finished bolt.
2. The small-sized connection long bolt upsetting process for aviation as claimed in claim 1, wherein: the ring surface of the adjusting die body is provided with a handle.
3. The small-sized connection long bolt upsetting process for aviation as claimed in claim 2, wherein: the anchor ring of upper die base is equipped with 1 ~ 3 exhaust holes, the exhaust hole sets up towards the through-hole.
4. The small-sized connection long bolt upsetting process for aviation as claimed in claim 3, wherein: the upper die holder is connected with the adjusting die body and/or the adjusting die body is connected with the lower die holder through a fixing bolt.
5. The small-sized connection long bolt upsetting process for aviation as claimed in claim 4, wherein: the number of the fixing bolts is 4.
6. The small-sized connection long bolt upsetting process for aviation according to claim 3, is characterized in that: the upper die base and the lower die base are provided with thread grooves, and the adjusting die body is relatively provided with a thread sleeve in threaded connection with the thread grooves.
7. The small-sized connection long bolt upsetting process for aviation as claimed in any one of claims 1 to 6, wherein: the material of the forming die is 5CrNiMo or H13.
8. A forming die for use in the process of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110035605.4A CN112872275A (en) | 2021-01-12 | 2021-01-12 | Heading process of small-sized connecting long bolt for aviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110035605.4A CN112872275A (en) | 2021-01-12 | 2021-01-12 | Heading process of small-sized connecting long bolt for aviation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112872275A true CN112872275A (en) | 2021-06-01 |
Family
ID=76044104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110035605.4A Pending CN112872275A (en) | 2021-01-12 | 2021-01-12 | Heading process of small-sized connecting long bolt for aviation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112872275A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4137163A1 (en) * | 1991-11-12 | 1993-05-13 | Bernhard Schaefer Werkzeug Und | DEVICE FOR CONNECTING A WIRE TO A PLUG, CONTACT ELEMENT OR THE LIKE |
| CN102764843A (en) * | 2012-08-15 | 2012-11-07 | 浙江中航来宝精工科技有限公司 | Method and die for processing bolt |
| CN102784868A (en) * | 2012-08-15 | 2012-11-21 | 浙江中航来宝精工科技有限公司 | Lattice-teeth bolt forming method and forming mold used by same |
| CN104475635A (en) * | 2014-11-18 | 2015-04-01 | 河南航天精工制造有限公司 | Super-long rod bolt head hot-forging molding device and molding method |
| CN107983895A (en) * | 2017-11-29 | 2018-05-04 | 中国航空工业标准件制造有限责任公司 | The performing hot-heading forming method of head super thick flange bolt |
| CN209697938U (en) * | 2019-03-21 | 2019-11-29 | 北京首航科学技术开发有限公司 | A kind of thermal upsetting die and its lower mold assemblies |
| CN211990774U (en) * | 2020-04-17 | 2020-11-24 | 大连金瑞德机械制造有限公司 | Die carrier device for friction press |
-
2021
- 2021-01-12 CN CN202110035605.4A patent/CN112872275A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4137163A1 (en) * | 1991-11-12 | 1993-05-13 | Bernhard Schaefer Werkzeug Und | DEVICE FOR CONNECTING A WIRE TO A PLUG, CONTACT ELEMENT OR THE LIKE |
| CN102764843A (en) * | 2012-08-15 | 2012-11-07 | 浙江中航来宝精工科技有限公司 | Method and die for processing bolt |
| CN102784868A (en) * | 2012-08-15 | 2012-11-21 | 浙江中航来宝精工科技有限公司 | Lattice-teeth bolt forming method and forming mold used by same |
| CN104475635A (en) * | 2014-11-18 | 2015-04-01 | 河南航天精工制造有限公司 | Super-long rod bolt head hot-forging molding device and molding method |
| CN107983895A (en) * | 2017-11-29 | 2018-05-04 | 中国航空工业标准件制造有限责任公司 | The performing hot-heading forming method of head super thick flange bolt |
| CN209697938U (en) * | 2019-03-21 | 2019-11-29 | 北京首航科学技术开发有限公司 | A kind of thermal upsetting die and its lower mold assemblies |
| CN211990774U (en) * | 2020-04-17 | 2020-11-24 | 大连金瑞德机械制造有限公司 | Die carrier device for friction press |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210601 |