CN114962410A - Slotting energy-absorbing pin capable of adjusting buckling deformation and preparation method thereof - Google Patents
Slotting energy-absorbing pin capable of adjusting buckling deformation and preparation method thereof Download PDFInfo
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- CN114962410A CN114962410A CN202210295173.5A CN202210295173A CN114962410A CN 114962410 A CN114962410 A CN 114962410A CN 202210295173 A CN202210295173 A CN 202210295173A CN 114962410 A CN114962410 A CN 114962410A
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- energy
- absorbing
- pin
- energy absorption
- simulation base
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 38
- 238000004088 simulation Methods 0.000 claims abstract description 29
- 230000007704 transition Effects 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 8
- 238000003801 milling Methods 0.000 claims description 7
- 238000009863 impact test Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 238000010892 electric spark Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000007514 turning Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a slotting energy-absorbing pin capable of adjusting buckling deformation and a preparation method thereof. The energy absorption device comprises an energy absorption pin and an energy absorption piece simulation base which are connected through threads; the impacted end of the energy-absorbing pin is processed into a semicircular impacted position of the energy-absorbing piece; a slot is processed on the side wall of the energy-absorbing pin; the lower part of the energy-absorbing pin is provided with a thread, and an arc transition is processed between the thread and the slot; the bottom of the energy-absorbing pin is provided with a connecting energy-absorbing member slot; the top end inside the energy absorption pin is processed into an inner semicircular design; the energy-absorbing part simulation base comprises a round hole and a hollow round pipe, the round hole with the built-in threads is located in the center of the upper end face of the energy-absorbing part simulation base and is connected with the threads of the lower part of the energy-absorbing pin, and the hollow round pipe is installed on the lower part of the energy-absorbing part simulation base. The invention can be used for single-point impact resistance and energy absorption, can also be arranged into a specific shape for impact energy absorption under a specific working condition, can cope with multi-directional impact, and can reduce the rebound after impact.
Description
Technical Field
The invention belongs to the field of structural protection, and particularly relates to a slotting energy-absorbing pin capable of adjusting buckling deformation and a preparation method thereof.
Background
In the field of structural protection, a part needs to be stopped and fixed in a certain position after moving at a low speed, while the part itself has a certain kinetic energy in the motion, and if the part is stopped directly, the kinetic energy is absorbed by the part itself, which causes damage to the part itself and has a certain amplitude of rebound. There is therefore a need for a device that can adequately absorb the kinetic energy of the component without damaging the component, can minimize the magnitude of the rebound, and can not occupy too much volume, and is easy to install and remove.
The tubular thin-wall structure is widely used in the fields of buffering and energy absorption as an energy absorption element with stable mechanical property. The traditional tubular structure absorbs energy through a folding and buckling deformation mode, the energy absorption mode is long in energy absorption stroke, the deformation amplitude of each folding and buckling is unstable, and the stress peak value of the columnar pipe energy absorption piece is high.
The invention provides an impact-resistant energy-absorbing part with buckling deformation adjusted by slotting and a preparation method thereof, aiming at the requirements of the energy-absorbing structural part in the field of structural protection. Different from the traditional buckling energy-absorbing member, on the basis of a columnar pipe energy-absorbing piece and an axisymmetric mode, the energy-absorbing member reduces the quality of the energy-absorbing piece and weakens the peak stress of the columnar pipe energy-absorbing piece by a slotting mode, prolongs the stress of a platform section to enable the energy-absorbing piece to be more energy-absorbing, enables the energy-absorbing piece to be easier to deform by slotting, increases the energy-absorbing effect of the energy-absorbing piece under low-speed impact and reduces the rebound length of the energy-absorbing piece after impact. The single body can be used for absorbing energy of single-point impact, can absorb energy of impact on a line if one-dimensional arrangement is carried out, and can absorb energy of plane impact in any shape if the single body is laid into a plane in the same way.
Disclosure of Invention
The invention aims to provide a slotting energy-absorbing pin capable of adjusting buckling deformation and absorbing energy in a stable deformation form and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
a slotting energy-absorbing pin capable of adjusting buckling deformation comprises an energy-absorbing pin and an energy-absorbing piece simulation base, wherein the energy-absorbing pin is connected with the energy-absorbing piece simulation base through threads; the energy-absorbing pin comprises an energy-absorbing part impacted position, a slot, an arc transition, a connecting energy-absorbing part slot and an inner semicircular design; the impacted end of the energy-absorbing pin is processed into a semicircular impacted position of the energy-absorbing piece; the side wall of the energy-absorbing pin is provided with a slot so as to reduce the quality of the energy-absorbing pin and weaken the peak stress; the lower part of the energy-absorbing pin is provided with a thread, and an arc transition is processed between the thread and the slot; the bottom of the energy-absorbing pin is provided with a connecting energy-absorbing member slot; the top end inside the energy-absorbing pin is processed into an inner semicircular design; the energy-absorbing part simulation base comprises a round hole and a hollow round pipe, the round hole with the built-in threads is located in the center of the upper end face of the energy-absorbing part simulation base and is connected with the threads of the lower part of the energy-absorbing pin, and the hollow round pipe is installed on the lower part of the energy-absorbing part simulation base.
Further, the number and the length of the grooves are adjusted according to specific working conditions, and the grooves are uniformly distributed on the side wall of the energy-absorbing pin for a circle.
Further, the adjustable buckling deformation notched energy absorbing pin can be used for impact load from one point; a plurality of the devices can be arranged to cope with loads under different working conditions.
A preparation method of a slotting energy-absorbing pin capable of adjusting buckling deformation comprises the following steps:
the method comprises the following steps: manufacturing energy-absorbing pin
Processing an impacted end of a metal bar into a semicircular impacted position of an energy absorption piece by turning and milling processes; firstly, punching holes on the side wall of the metal bar by using an electric spark process, and then processing slots by using a wire cutting slot method; processing the lower part of the metal bar into threads; processing the position between the pipe wall and the thread into circular arc transition of a fillet; two symmetrical connecting energy-absorbing part grooves are processed at the bottom of the lower end thread; hollowing the interior of the metal rod by a drilling process and milling the top end of the metal rod into an inner semicircular design;
step two: simulation base for manufacturing energy absorption piece
Hollowing one side of another metal bar with different sizes, and making a round hole in the center of the non-hollowed side and processing threads in the interior;
step three: cleaning metal scraps on the energy absorption pin and the energy absorption piece simulation base;
step four: connecting the threads of the energy-absorbing pin and the circular hole of the energy-absorbing part simulation base together;
step five: and mounting the energy-absorbing piece simulation base on an impact test bed for impact test.
The invention has the beneficial effects that:
the invention has simple structure and easy assembly, the manufacturing process only relates to basic machining, and the used machining comprises the processes of turning, milling, drilling, electric spark punching, linear cutting and the like. The invention can be used for single-point impact resistance and energy absorption, and can also be arranged into a specific shape for impact energy absorption under a specific working condition. The present invention can cope with an impact from multiple directions and can reduce the rebound after the impact. On the basis of the columnar pipe energy absorbing piece and the axisymmetric mode, the invention reduces the quality of the energy absorbing piece and weakens the peak stress of the columnar pipe energy absorbing piece through a slotting mode, and the energy absorbing piece is easier to deform through slotting, thereby increasing the energy absorbing effect of the energy absorbing piece under low-speed impact and reducing the rebound length of the energy absorbing piece after impact. The single body can be used for absorbing energy of single-point impact, can absorb the energy of impact on a line if the single-point impact is arranged in one dimension, and can absorb the energy of impact on planes in any shape if the single-point impact is laid on a plane in the same way.
Compared with the traditional columnar energy absorption piece, the energy absorption piece has lighter weight and better impact resistance. The preparation method of the invention is simple and practical, has low cost and is easy to realize line production.
Drawings
FIG. 1 is a schematic view of an assembly of an energy-absorbing pin and an energy-absorbing member simulation base of a slotting energy-absorbing pin with adjustable buckling deformation according to the invention;
FIG. 2 is an external view of an energy absorbing pin of an adjustable buckling deformation energy absorbing slotted pin of the present invention;
FIG. 3 is a schematic cross-sectional view of an energy absorbing pin of an adjustable buckling deformation energy absorbing slotted pin of the present invention;
FIG. 4 is a schematic view of an energy absorbing member simulated base of an adjustable buckling deformation notched energy absorbing pin of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention provides a slotted energy-absorbing pin capable of adjusting buckling deformation and a preparation method thereof, aiming at the requirements of the energy-absorbing structural member in the field of aerospace. The technical scheme is as follows:
according to the figure 1, the slotting energy-absorbing pin capable of adjusting the buckling deformation comprises an energy-absorbing pin 1 and an energy-absorbing piece simulation base 2; the energy-absorbing pin 1 is connected with the energy-absorbing piece simulation base 2 through threads.
According to the figures 2 and 3, in the slotting energy-absorbing pin capable of adjusting the buckling deformation, the energy-absorbing pin 1 comprises an impact position 1-1 of an energy-absorbing part, and the energy-absorbing part is designed to be semicircular so as to deal with the impact from the continuous direction; the six slots 1-2 are uniformly distributed in a circle, and the number and the length of the slots 1-2 can be adjusted according to specific working conditions; the arc transition 1-3 can be more stable than the right-angle transition and can also prevent the stress concentration; threads 1-4 for connection to a base; connecting energy absorbing piece slots 1-5 which are convenient for mounting and dismounting the energy absorbing piece; the top end inside the energy-absorbing pin 1 is processed into an internal semicircular design 1-6, so that impact load is transmitted to the pipe wall more uniformly, and stress concentration can be avoided.
According to fig. 4, the energy absorbing member simulates a base 2, comprising a circular hole 2-1 with a built-in thread, which functions to place and secure an energy absorbing pin; the hollow round tube 2-2 has the function of better connecting with experimental equipment when an impact experiment is carried out.
The slotting energy-absorbing pin capable of adjusting buckling deformation can be used for impact load from one point, and can be arranged into different shapes such as a line, a plane and the like to cope with energy absorption under different working conditions.
The invention also discloses a preparation method of the slotting energy-absorbing pin capable of adjusting buckling deformation, which comprises the following steps:
the method comprises the following steps: selecting a metal bar with a required size, and processing an impacted end of the metal bar into a semicircular impacted position 1-1 of an energy absorbing part by turning, milling and other processes; processing the lower part of the metal rod into threads 1-4; processing the position between the pipe wall and the thread 1-4 into circular arc transition 1-3 of a fillet; processing two symmetrical connecting energy-absorbing piece grooves 1-5 for installation and disassembly at the bottoms of the lower part threads 1-4; hollowing the interior of the metal rod by a drilling process and milling the top end of the metal rod into an inner semicircular design 1-6; when the grooving 1-2 is processed, firstly, the electric spark process is used for punching, and the grooving is carried out by linear cutting;
step two: selecting a metal bar with a proper size, hollowing one side and the other side, forming a circular hole 2-1 in the center of the non-hollowed side, and processing threads;
step three: cleaning metal scraps on the energy absorption pin 1 and the energy absorption piece simulation base 2;
step four: connecting threads 1-4 of an energy absorption pin 1 with a round hole 2-1 of an energy absorption piece simulation base 2;
step five: and installing the energy-absorbing piece simulation base 2 on an impact test bed for impact test.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides an adjustable bucking energy-absorbing round pin that warp which fluting is got ready which characterized in that: the energy absorption simulation device comprises an energy absorption pin (1) and an energy absorption piece simulation base (2), wherein the energy absorption pin (1) is connected with the energy absorption piece simulation base (2) through threads; the energy-absorbing pin (1) comprises an energy-absorbing part impacted position (1-1), a slot (1-2), an arc transition (1-3), a slot (1-5) for connecting the energy-absorbing part and an inner semicircular design (1-6); the impacted end of the energy-absorbing pin (1) is processed into a semicircular impacted position (1-1) of the energy-absorbing part; the side wall of the energy-absorbing pin (1) is provided with a slot (1-2) so as to reduce the mass of the energy-absorbing pin (1) and weaken the peak stress; threads (1-4) are machined on the lower portion of the energy absorption pin (1), and arc transitions (1-3) are machined between the threads (1-4) and the grooves (1-2); the bottom of the energy-absorbing pin (1) is provided with a connecting energy-absorbing member slot (1-5); the top end inside the energy absorption pin (1) is processed into an inner semicircular design (1-6); the energy-absorbing part simulation base (2) comprises a round hole (2-1) and a hollow round pipe (2-2), the round hole (2-1) with a built-in thread is located in the center of the upper end face of the energy-absorbing part simulation base (2) and is connected with the thread (1-4) on the lower portion of the energy-absorbing pin (1), and the hollow round pipe (2-2) is installed on the lower portion of the energy-absorbing part simulation base (2).
2. The adjustable buckling deformation notched energy absorbing pin of claim 1, wherein: the number and the length of the slots (1-2) are adjusted according to specific working conditions, and the slots are uniformly distributed on the side wall of the energy-absorbing pin (1) for a circle.
3. The adjustable buckling deformation notched energy absorbing pin of claim 1, wherein: the adjustable buckling deformation slotted energy absorption pin can be used for impact load from one point; a plurality of the devices can be arranged to cope with loads under different working conditions.
4. A preparation method of a slotting energy-absorbing pin capable of adjusting buckling deformation is characterized by comprising the following steps: the preparation method comprises the following steps:
the method comprises the following steps: manufacturing energy absorption pin (1)
Processing an impacted end of a metal bar into a semicircular impacted position (1-1) of an energy absorbing piece by turning and milling processes; punching on the side wall of the metal bar by using an electric spark process, and then processing a slot (1-2) in a linear cutting slot manner; the lower part of the metal bar is processed into threads (1-4); processing the position between the pipe wall and the thread (1-4) into a circular arc transition (1-3) with a round angle; two symmetrical connecting energy-absorbing part grooves (1-5) are processed at the bottom of the lower end thread; hollowing out the interior of the metal bar by a drilling process and milling the top end into an inner semi-circular design (1-6);
step two: simulation base of energy absorption manufacturing (2)
One side of another metal bar with different sizes is hollowed, the other side of the metal bar is not hollowed, a round hole (2-1) is formed in the center of the side which is not hollowed, and threads are machined in the side;
step three: cleaning metal scraps on the energy absorption pin (1) and the energy absorption piece simulation base (2);
step four: connecting threads (1-4) of an energy absorption pin (1) with a round hole (2-1) of an energy absorption piece simulation base (2) together;
step five: and installing the energy-absorbing piece simulation base (2) on an impact test bed for impact test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210295173.5A CN114962410B (en) | 2022-03-23 | 2022-03-23 | Slotted energy-absorbing pin capable of adjusting buckling deformation and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210295173.5A CN114962410B (en) | 2022-03-23 | 2022-03-23 | Slotted energy-absorbing pin capable of adjusting buckling deformation and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114962410A true CN114962410A (en) | 2022-08-30 |
| CN114962410B CN114962410B (en) | 2024-04-30 |
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| CN202210295173.5A Active CN114962410B (en) | 2022-03-23 | 2022-03-23 | Slotted energy-absorbing pin capable of adjusting buckling deformation and preparation method thereof |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001099116A (en) * | 1999-09-29 | 2001-04-10 | Fuji Heavy Ind Ltd | Positioning pin |
| US20030075953A1 (en) * | 2001-09-26 | 2003-04-24 | Sumitomo Chemical Company, Limited | Impact energy absorbing component |
| JP2011131707A (en) * | 2009-12-24 | 2011-07-07 | Hayashi Engineering Inc | Shock absorbing structure for vehicle |
| CN203516360U (en) * | 2013-09-11 | 2014-04-02 | 苏州云逸航空复合材料结构有限公司 | Energy absorption pin |
| JP2014224583A (en) * | 2013-05-17 | 2014-12-04 | 不二ラテックス株式会社 | One-shot damper |
| JP2017106611A (en) * | 2015-11-30 | 2017-06-15 | 東レ株式会社 | Shock energy absorption structure for vehicle |
| JP2017180496A (en) * | 2016-03-28 | 2017-10-05 | 日本プラスト株式会社 | Energy absorption member |
| CN107421748A (en) * | 2016-05-24 | 2017-12-01 | 上海冠驰汽车安全技术有限公司 | A kind of automobile-used energy absorption device of collision stage |
| CN110388405A (en) * | 2019-07-22 | 2019-10-29 | 深圳市乾行达科技有限公司 | Impact energy-absorbing protective device |
| CN110406178A (en) * | 2019-06-03 | 2019-11-05 | 哈尔滨工程大学 | Double gradient energy-obsorbing and damping sandwich structures of a kind of metal/composite material multilayer and preparation method thereof |
-
2022
- 2022-03-23 CN CN202210295173.5A patent/CN114962410B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001099116A (en) * | 1999-09-29 | 2001-04-10 | Fuji Heavy Ind Ltd | Positioning pin |
| US20030075953A1 (en) * | 2001-09-26 | 2003-04-24 | Sumitomo Chemical Company, Limited | Impact energy absorbing component |
| JP2011131707A (en) * | 2009-12-24 | 2011-07-07 | Hayashi Engineering Inc | Shock absorbing structure for vehicle |
| JP2014224583A (en) * | 2013-05-17 | 2014-12-04 | 不二ラテックス株式会社 | One-shot damper |
| CN203516360U (en) * | 2013-09-11 | 2014-04-02 | 苏州云逸航空复合材料结构有限公司 | Energy absorption pin |
| JP2017106611A (en) * | 2015-11-30 | 2017-06-15 | 東レ株式会社 | Shock energy absorption structure for vehicle |
| JP2017180496A (en) * | 2016-03-28 | 2017-10-05 | 日本プラスト株式会社 | Energy absorption member |
| CN107421748A (en) * | 2016-05-24 | 2017-12-01 | 上海冠驰汽车安全技术有限公司 | A kind of automobile-used energy absorption device of collision stage |
| CN110406178A (en) * | 2019-06-03 | 2019-11-05 | 哈尔滨工程大学 | Double gradient energy-obsorbing and damping sandwich structures of a kind of metal/composite material multilayer and preparation method thereof |
| CN110388405A (en) * | 2019-07-22 | 2019-10-29 | 深圳市乾行达科技有限公司 | Impact energy-absorbing protective device |
Non-Patent Citations (1)
| Title |
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| CN114962410B (en) | 2024-04-30 |
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