CN203923287U - A kind of slotted liner bushing and the plug being used in conjunction with this slotted liner bushing - Google Patents
A kind of slotted liner bushing and the plug being used in conjunction with this slotted liner bushing Download PDFInfo
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- CN203923287U CN203923287U CN201420345951.8U CN201420345951U CN203923287U CN 203923287 U CN203923287 U CN 203923287U CN 201420345951 U CN201420345951 U CN 201420345951U CN 203923287 U CN203923287 U CN 203923287U
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- 230000007704 transition Effects 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 abstract description 27
- 238000000641 cold extrusion Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000035882 stress Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The plug that the utility model provides a kind of slotted liner bushing and has been used in conjunction with this slotted liner bushing, described slotted liner bushing comprises the jacket wall (11) of tubular, the juxtaposition district (12) of jacket wall (11) is roughly isosceles trapezoid.This slotted liner bushing is owing to having changed shape and the structure in juxtaposition district, can make the hole after cold extrusion can significantly improve fatigue lifetime, appropriate design the scantlings of the structure of slotted liner bushing and plug, adopt metric system slotted liner bushing to carry out the strengthening of metric system fastener hole Cold-Expanded Hole, in stretching extrusion process, the effect of pushing due to plug stretching makes hole wall produce stress district, under the effect of repeated load, the generation of delay fatigue crackle, thus fatigue lifetime in hole can be improved.Adopt slotted liner bushing of the present utility model and plug, the hole after Cold-Expanded Hole strengthening can be improved more than 3 times fatigue lifetime, can realize the object that metric system fastener hole cold extrusion strengthening increases the longevity.
Description
Technical field
The utility model relates to metal aperture cold extrusion strengthening technical field of tools, and concrete is a kind of slotted liner bushing, is also a kind of plug being used in conjunction with this slotted liner bushing.
Background technology
The index of aging of present generation aircraft structure is more and more high, therefore must improve the anti-fatigue ability of structure, in all fatigure failures, nearly 75%～80% fatigure failure all occurs on the connecting portion of housing construction, and the fatigue lifetime of improving hole is significant for the body increasing longevity.Cold holes expansion is to push by plug, make hole wall produce compressive stress state, at structure hole periphery, produce certain thickness stress under compression district, under the effect of external load, mean stress and stress amplitude, all than original decline, have therefore improved resistance to crack extension and have produced and the ability of expanding.Use slotted liner bushing to carry out cold extrusion higher fatigue lifetime than using the direct cold-stamped of plug, so cold holes expansion technology mainly adopt slotted liner bushing cold extrusion strengthening.Home-built aircraft connecting hole adopts metric size in a large number, and carry out cold extrusion strengthening for metric system fastener hole, there is no suitable slotted liner bushing and plug, need design to be applicable to slotted liner bushing and the plug of metric system fastener hole, carry out Cold Worked Hole With Split-Sleeve strengthening, meet the demand of cold holes expansion, thereby improve the fatigue lifetime of connecting hole.
The direct Cold-Expanded Hole strengthening of existing plug, in the direct Cold Extrusion Process of plug, because plug directly acts on hole wall, hole wall quality is produced to certain impact, thereby affect strengthening effect and fatigue lifetime, in this external drawing process, due to the effect of hole wall frictional force, easily there is plug and break, the phenomenon such as stuck.
Utility model content
In order to solve the easy plug that occurs in prior art, break stuck technical problem.The plug that the utility model provides a kind of slotted liner bushing and has been used in conjunction with this slotted liner bushing, this slotted liner bushing is owing to having changed shape and the structure in juxtaposition district, can make the hole after cold extrusion can significantly improve fatigue lifetime, reduce that plug is broken, the generation of the phenomenon such as stuck simultaneously.
The utility model for solving the technical scheme of its technical problem employing is: a kind of slotted liner bushing, the jacket wall that comprises tubular, the border in the juxtaposition district of jacket wall comprises the first arc-shaped side of the head end that is positioned at described slotted liner bushing, be positioned at the second arc-shaped side of the tail end of described slotted liner bushing, be arranged on first side and second side between the first arc-shaped side and the second arc-shaped side, the mid point of the mid point of the first arc-shaped side and the second arc-shaped side is positioned on the same bus of jacket wall, the length of the first arc-shaped side is less than the length of the second arc-shaped side, the length of first side and second side equal in length.
The length of the first arc-shaped side is 75%～85% of the second arc-shaped side length.
Jacket wall is cone barrel.
The drift angle of described cone barrel is 1 °～3 °.
The head end of described slotted liner bushing is provided with flange.
The opening angle of flange is 90 °～150 °.
The whole outside surface that is positioned at the jacket wall in juxtaposition district is provided with circular arc transition or the transition of involute urve shape.
The diameter of described slotted liner bushing is 4.1mm～13.4mm.
And the plug that above-mentioned slotted liner bushing is used in conjunction with, comprises shaft-like plug head end and the plug tail end of column, and the diameter of plug head end is less than the diameter of plug tail end, and the diameter of plug head end is than the large 0.1mm～0.2mm of the diameter of described slotted liner bushing.
Plug tail end is provided with for the annular recesses of sealing-ring is installed.
The beneficial effects of the utility model are: this slotted liner bushing is owing to having changed shape and the structure in juxtaposition district, can make the hole after cold extrusion can significantly improve fatigue lifetime, appropriate design the scantlings of the structure of slotted liner bushing and plug, adopt metric system slotted liner bushing to carry out the strengthening of metric system fastener hole Cold-Expanded Hole, in stretching extrusion process, the effect of pushing due to plug stretching makes hole wall produce stress district, under the effect of repeated load, the generation of delay fatigue crackle, thus fatigue lifetime in hole can be improved.Adopt slotted liner bushing of the present utility model and plug, the hole after Cold-Expanded Hole strengthening can be improved more than 3 times fatigue lifetime, can realize the object that metric system fastener hole cold extrusion strengthening increases the longevity.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, slotted liner bushing described in the utility model is described in further detail.
Fig. 1 is the front view of slotted liner bushing.
Fig. 2 is the left view of slotted liner bushing.
Fig. 3 is the front view of plug.
11. jacket wall wherein, 12. juxtaposition districts, 13. first arc-shaped sides, 14. second arc-shaped sides, 15. first sides, 16. second sides, 17. flange;
21. plug head ends, 22. plug tail ends, 23. annular recessess.
Embodiment
Below in conjunction with accompanying drawing, slotted liner bushing described in the utility model is described in further detail.A kind of slotted liner bushing, the jacket wall 11 that comprises tubular, the border in the juxtaposition district 12 of jacket wall 11 comprises the first arc-shaped side 13 of the head end that is positioned at described slotted liner bushing, be positioned at the second arc-shaped side 14 of the tail end of described slotted liner bushing, be arranged on the 15He second side, first side 16 between the first arc-shaped side 13 and the second arc-shaped side 14, the mid point of the mid point of the first arc-shaped side 13 and the second arc-shaped side 14 is positioned on the same bus of jacket wall 11, the length of the first arc-shaped side 13 is less than the length of the second arc-shaped side 14, the length of first side 15 and second side 16 equal in length, as shown in Figure 1.
The jacket wall 11 of the curling rear formation tubular of jacket wall 11 of plane, jacket wall 11 lap-joint forms juxtaposition district 12 as shown in Figure 1, the identical jacket wall 11 of shape in the Liang Geyugai juxtaposition district 12 that this juxtaposition district 12 is arranged by stacked on top of one another forms, the mid point of the mid point of the first arc-shaped side 13 and the second arc-shaped side 14 is positioned on the same bus of jacket wall 11, the length of the first arc-shaped side 13 is less than the length of the second arc-shaped side 14, 15He second side, first side 16 is straight line (line segment), the length of first side 15 and second side 16 equal in length, be that the application Zhong Gai juxtaposition district 12 is the isosceles trapezoid shown in Fig. 1.This slotted liner bushing is inserted in after plug, can be softened, and juxtaposition district 12 can diminish or disappear.
The length of the first arc-shaped side 13 is 75%～85% of second arc-shaped side 14 length.Jacket wall 11 is cone barrel.The apex angle ss of described cone barrel is 1 °～3 °.To realize installation and the strengthening of slotted liner bushing.
The head end of described slotted liner bushing is provided with flange 17.The opening angle α of flange 17 is 90 °～150 °, as shown in Figure 1.Flange 17 makes it act on chamfering place, limit, hole in strengthening process.
The whole outside surface that is positioned at the jacket wall 11 in juxtaposition district 12 is provided with circular arc transition or the transition of involute urve shape, as shown in Figure 2.The whole outside surface of jacket wall 11 that is positioned at juxtaposition district 12 is projected as circular arc or involute urve shape in the plane of the axis perpendicular to slotted liner bushing, or the outside surface of the internal surface of jacket wall 11 and jacket wall 11 is connected by the surface of circular arc or the surface of involute urve in juxtaposition district 12, as shown in Figure 2.Plug is in drawing process like this, and slotted liner bushing stuck phenomenon can not occur.
The diameter of described slotted liner bushing is 4.1mm～13.4mm.The main size that adopts metric system in the utility model.
The plug that a kind of and above-mentioned slotted liner bushing is used in conjunction with, comprise shaft-like plug head end 21 and the plug tail end 22 of column, the diameter of plug head end 21 is less than the diameter of plug tail end 22, and the diameter of plug head end 21 is than the large 0.1mm～0.2mm of the diameter of described slotted liner bushing, as shown in Figure 3.
The size of rational Match slotted liner bushing and plug, thus realize the cold extrusion strengthening of metric system fastener hole, thus the fatigue lifetime of improving pore structure.
This slotted liner bushing and plug can be used for realizing the cold extrusion strengthening of different size metric system fastener hole, in cold extrusion strengthening process, first slotted liner bushing is enclosed within plug taper end, plug is inserted in fastener hole, by drawing rifle to apply pulling force to plug, now, slotted liner bushing is positioned at fastener hole, plug acts on hole wall by extruding slotted liner bushing in drawing process, the extruding of realization to fastener hole, owing to scribbling lubricant at slotted liner bushing inwall, so plug, in drawing process, stuck phenomenon can not occur.
Plug tail end 22 is provided with for the annular recesses 23 of sealing-ring is installed.Can prevent that plug from occurring in stretching strengthening process loosening, play the effect of locking and sealing.
Slotted liner bushing and plug need the two coordinating size of appropriate design carrying out Cold-Expanded Hole when strengthening, so that after the cold extrusion realizing strengthening, and the fatigue lifetime of effectively improving structure hole.
The result of use of impracticable novel slotted liner bushing and plug is as follows:
After preparing structure hole, under the effect of drawing rifle, realize the cold extrusion strengthening to fastener hole.The specification of metric system slotted liner bushing and plug is as shown in table 1:
Table 1
Embodiment 1:
Take the hole of diameter phi 5 is example, and slotted liner bushing diameter A is φ 4.3mm, and slotted liner bushing inwall scribbles lubricant, diameter of mandrel B is φ 4.4mm, and slotted liner bushing is inserted in to plug, then by plug patchhole, under the effect of drawing rifle, plug moves backward, realizes the cold extrusion strengthening to fastener hole.
Embodiment 2:
Take the hole of diameter phi 10 is example, slotted liner bushing diameter A is φ 9.4mm, slotted liner bushing inwall scribbles lubricant, diameter of mandrel B is φ 9.5mm, slotted liner bushing is inserted in to plug, then by plug patchhole, under the effect of drawing rifle, plug moves backward, realizes the cold extrusion strengthening to fastener hole.
Embodiment 3:
Take the hole of diameter phi 14 is example, slotted liner bushing diameter A is φ 13.4mm, slotted liner bushing inwall scribbles lubricant, diameter of mandrel B is φ 13.5mm, slotted liner bushing is inserted in to plug, then by plug patchhole, under the effect of drawing rifle, plug moves backward, realizes the cold extrusion strengthening to fastener hole.
The utility model has the advantage of the size of rational Match slotted liner bushing and plug, the hole after cold extrusion can be significantly improved fatigue lifetime.Appropriate design the scantlings of the structure of slotted liner bushing and plug, adopt metric system slotted liner bushing to carry out the strengthening of metric system fastener hole Cold-Expanded Hole, in stretching extrusion process, the effect of pushing due to plug stretching makes hole wall produce stress district, under the effect of repeated load, the generation of delay fatigue crackle, thus fatigue lifetime in hole can be improved.Adopt slotted liner bushing of the present utility model and plug, the hole after Cold-Expanded Hole strengthening can be improved more than 3 times fatigue lifetime, can realize the object that metric system fastener hole cold extrusion strengthening increases the longevity.
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or the equivalent variations of doing according to the utility model scope of patent protection and modification, all should still belong to the category that this patent is contained.Between technical scheme and technical scheme, all can use by independent assortment in addition, between the technical characterictic and technical characterictic in the utility model, between technical characterictic and technical scheme.
Claims (10)
1. a slotted liner bushing, it is characterized in that, described slotted liner bushing comprises the jacket wall (11) of tubular, the border in the juxtaposition district (12) of jacket wall (11) comprises first arc-shaped side (13) of the head end that is positioned at described slotted liner bushing, be positioned at second arc-shaped side (14) of the tail end of described slotted liner bushing, be arranged on first side (15) and second side (16) between the first arc-shaped side (13) and the second arc-shaped side (14), the mid point of the mid point of the first arc-shaped side (13) and the second arc-shaped side (14) is positioned on the same bus of jacket wall (11), the length of the first arc-shaped side (13) is less than the length of the second arc-shaped side (14), the length of first side (15) and second side (16) equal in length.
2. slotted liner bushing according to claim 1, is characterized in that: the length of the first arc-shaped side (13) is 75%～85% of the second arc-shaped side (14) length.
3. slotted liner bushing according to claim 1, is characterized in that: jacket wall (11) is cone barrel.
4. slotted liner bushing according to claim 3, is characterized in that: the drift angle of described cone barrel is 1 °～3 °.
5. slotted liner bushing according to claim 1, is characterized in that: the head end of described slotted liner bushing is provided with flange (17).
6. slotted liner bushing according to claim 5, is characterized in that: the opening angle of flange (17) is 90 °～150 °.
7. slotted liner bushing according to claim 1, is characterized in that: the whole outside surface that is positioned at the jacket wall (11) of juxtaposition district (12) is provided with circular arc transition or the transition of involute urve shape.
8. slotted liner bushing according to claim 1, is characterized in that: the diameter of described slotted liner bushing is 4.1mm～13.4mm.
One kind with claim 1～8 in the plug that is used in conjunction with of slotted liner bushing described in any one, it is characterized in that: described plug comprises shaft-like plug head end (21) and the plug tail end (22) of column, the diameter of plug head end (21) is less than the diameter of plug tail end (22), and the diameter of plug head end (21) is than the large 0.1mm～0.2mm of the diameter of described slotted liner bushing.
10. plug according to claim 9, is characterized in that: plug tail end (22) is provided with the annular recesses (23) for sealing-ring is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345951.8U CN203923287U (en) | 2014-06-25 | 2014-06-25 | A kind of slotted liner bushing and the plug being used in conjunction with this slotted liner bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345951.8U CN203923287U (en) | 2014-06-25 | 2014-06-25 | A kind of slotted liner bushing and the plug being used in conjunction with this slotted liner bushing |
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| Publication Number | Publication Date |
|---|---|
| CN203923287U true CN203923287U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345951.8U Expired - Lifetime CN203923287U (en) | 2014-06-25 | 2014-06-25 | A kind of slotted liner bushing and the plug being used in conjunction with this slotted liner bushing |
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| CN (1) | CN203923287U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081111A (en) * | 2015-07-21 | 2015-11-25 | 贵州航太精密制造有限公司 | High performance extrusion device for mechanical connection |
| CN109280751A (en) * | 2018-09-05 | 2019-01-29 | 华东理工大学 | A kind of Hertz contact rotary squeezing intensifying device and reinforcement process |
| CN109468445A (en) * | 2018-09-05 | 2019-03-15 | 华东理工大学 | One kind is based on micro convex point and coating composite rotating coldworking strengthened device and reinforcement process |
| CN109533294A (en) * | 2018-11-15 | 2019-03-29 | 中国直升机设计研究所 | A kind of rocker arrangement with adjustable frictional force |
| CN110564936A (en) * | 2019-09-20 | 2019-12-13 | 西安聚行机电科技发展有限公司 | Whole-product hole cold extrusion strengthening method |
| CN111118270A (en) * | 2019-12-31 | 2020-05-08 | 西北工业大学 | Cold extruding process and device for homogenizing residual stress around hole |
| CN111961826A (en) * | 2020-07-17 | 2020-11-20 | 国营芜湖机械厂 | Bow-shaped clamp and structural connecting hole extrusion strengthening method applying same |
| CN112077564A (en) * | 2020-04-16 | 2020-12-15 | 西北工业大学 | Installation method of press-fit bush and structural member |
| CN112680677A (en) * | 2020-12-09 | 2021-04-20 | 南京航空航天大学 | Process for reinforcing assembly hole by adopting slotted core rod cold extrusion |
| CN112961967A (en) * | 2021-02-03 | 2021-06-15 | 四川大学 | Single-side cold extrusion fatigue strengthening device and method for orifice of open pore structure |
| CN112983958A (en) * | 2021-03-19 | 2021-06-18 | 南京航空航天大学 | Multi-slit bushing diameter variable device with threaded sleeves and using method thereof |
| CN113601111A (en) * | 2021-07-21 | 2021-11-05 | 南京航空航天大学 | Method for processing multi-slot bushing |
| CN114807548A (en) * | 2022-03-24 | 2022-07-29 | 南京航空航天大学 | Separable extrusion core bar ultrasonic vibration hole extrusion strengthening device and operation process thereof |
-
2014
- 2014-06-25 CN CN201420345951.8U patent/CN203923287U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081111A (en) * | 2015-07-21 | 2015-11-25 | 贵州航太精密制造有限公司 | High performance extrusion device for mechanical connection |
| CN109280751A (en) * | 2018-09-05 | 2019-01-29 | 华东理工大学 | A kind of Hertz contact rotary squeezing intensifying device and reinforcement process |
| CN109468445A (en) * | 2018-09-05 | 2019-03-15 | 华东理工大学 | One kind is based on micro convex point and coating composite rotating coldworking strengthened device and reinforcement process |
| CN109280751B (en) * | 2018-09-05 | 2020-05-22 | 华东理工大学 | Hertz contact rotary extrusion strengthening device and strengthening process |
| CN109468445B (en) * | 2018-09-05 | 2020-11-10 | 华东理工大学 | Composite rotary extrusion strengthening device and strengthening process based on micro-convex points and coating |
| CN109533294A (en) * | 2018-11-15 | 2019-03-29 | 中国直升机设计研究所 | A kind of rocker arrangement with adjustable frictional force |
| CN110564936B (en) * | 2019-09-20 | 2021-07-09 | 西安聚行机电科技发展有限公司 | Whole-product hole cold extrusion strengthening method |
| CN110564936A (en) * | 2019-09-20 | 2019-12-13 | 西安聚行机电科技发展有限公司 | Whole-product hole cold extrusion strengthening method |
| CN111118270A (en) * | 2019-12-31 | 2020-05-08 | 西北工业大学 | Cold extruding process and device for homogenizing residual stress around hole |
| CN111118270B (en) * | 2019-12-31 | 2022-08-02 | 西北工业大学 | Cold extruding process and device for homogenizing residual stress around hole |
| CN112077564A (en) * | 2020-04-16 | 2020-12-15 | 西北工业大学 | Installation method of press-fit bush and structural member |
| CN112077564B (en) * | 2020-04-16 | 2022-07-29 | 西北工业大学 | Installation method of press-fit bush and structural member |
| CN111961826A (en) * | 2020-07-17 | 2020-11-20 | 国营芜湖机械厂 | Bow-shaped clamp and structural connecting hole extrusion strengthening method applying same |
| CN112680677A (en) * | 2020-12-09 | 2021-04-20 | 南京航空航天大学 | Process for reinforcing assembly hole by adopting slotted core rod cold extrusion |
| CN112961967A (en) * | 2021-02-03 | 2021-06-15 | 四川大学 | Single-side cold extrusion fatigue strengthening device and method for orifice of open pore structure |
| CN112983958A (en) * | 2021-03-19 | 2021-06-18 | 南京航空航天大学 | Multi-slit bushing diameter variable device with threaded sleeves and using method thereof |
| CN112983958B (en) * | 2021-03-19 | 2022-04-29 | 南京航空航天大学 | Multi-slit bushing diameter variable device with threaded sleeves and using method thereof |
| CN113601111A (en) * | 2021-07-21 | 2021-11-05 | 南京航空航天大学 | Method for processing multi-slot bushing |
| CN114807548A (en) * | 2022-03-24 | 2022-07-29 | 南京航空航天大学 | Separable extrusion core bar ultrasonic vibration hole extrusion strengthening device and operation process thereof |
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Address after: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee after: China Institute of Aeronautical Manufacturing Technology Address before: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee before: Beijing Aviation Manufacturing Engineering Institute of China Aviation Industry Group Company |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200917 Address after: Room 2127, 1st floor, 40 buildings in Dongjunzhuang, Chaoyang District, Beijing Patentee after: Beijing Hangwei High Tech Connection Technology Co.,Ltd. Address before: 100024 Beijing city Chaoyang District eight Bridge North East Junzhuang No. 1 Patentee before: AVIC BEIJING AERONAUTICAL MANUFACTURING TECHNOLOGY Research Institute |