CN102042785B - Cumulative cutting method for wall-thickness variable metal component with bent cross section - Google Patents
Cumulative cutting method for wall-thickness variable metal component with bent cross section Download PDFInfo
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- CN102042785B CN102042785B CN 201010549062 CN201010549062A CN102042785B CN 102042785 B CN102042785 B CN 102042785B CN 201010549062 CN201010549062 CN 201010549062 CN 201010549062 A CN201010549062 A CN 201010549062A CN 102042785 B CN102042785 B CN 102042785B
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- jet cutter
- flexible
- cutter
- flexible jet
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Abstract
The invention provides a cumulative cutting method for a wall-thickness variable metal component with a bent cross section. In the method, cutters with different explosive charge quantities are adopted according to different wall thicknesses, and the method is beneficial to the reduction of the explosive dosage relative to other explosive charging modes. A protective device made of a composite material not only has the protective effect on explosion dangers, but also guarantees the proper matching of relative positions of an adopted flexible cumulative cutter and the surface of a bent metal component; and an accurate explosion propagation technology that a jet flow generated by one flexible cumulative cutter is used for detonating another flexible cumulative cutter adjacent to the flexible cumulative cutter is adopted to ensure that various types of cumulative cutters can be detonated continuously and reliably so as to reliably and safely cut a wall-thickness viable metal component with a bent cross section.
Description
Technical field
The present invention relates to a kind of cumulative cutting method, the bending of especially a kind of cross section becomes the cumulative cutting method of wall thickness hardware.
Background technology
The present invention directly serves the big aircraft of a new generation (comprising commercial and military big aircraft) of China's development.When occupant on the machine needs aloft or during water surface emergency escape, suitable position is opened up accessible personnel escape's passage aboard, in time withdraws aircraft with occupant on the guarantee machine.This passage relates to cross section and is the fast and reliable cutting problem of bending, change wall thickness particulate metal member when opening up, being difficult to solve this cross section with existing technological means is the fast and reliable cutting problem that bending becomes wall thickness particulate metal member.
Therefore, need a kind of new technical scheme to address the above problem.
Summary of the invention
The objective of the invention is the deficiency at the prior art existence, a kind of cumulative cutting method that can carry out the cross section bending change wall thickness hardware of fast and reliable cutting to change wall thickness hardware is provided.
For achieving the above object, the cumulative cutting method of cross section bending change wall thickness hardware of the present invention can adopt following technical scheme:
The bending of a kind of cross section becomes the cumulative cutting method of wall thickness hardware, and this method may further comprise the steps:
(1) selecting cavity liner and powder charge shell for use is the flexible jet cutter of one;
(2) to the metal level to be cut of different wall in the hardware, adopt the flexible jet cutter of different explosive payloads;
(3) provide protector, the groove that flexible jet cutter is installed is left in this protector inside, each flexible jet cutter head and the tail is overlapped mutually, and be arranged in the mounting groove of protector;
(4) protector of flexible jet cutter will be installed, and use epoxide-resin glue to be bonded in each layer on surface of metal to be cut of hardware;
(5) ignite first flexible jet cutter, the flexible jet cutter that the jet that this first flexible jet cutter produces will be adjacent is ignited, the flexible jet cutter that the next one is detonated is ignited adjacent cutter again, all ignites until all cutters.
(6) cutting is finished.
Compare with background technology, the present invention is directed to the cutter that different wall adopts different explosive payloads, with respect to other charging means, be conducive to reduce explosive consumption; The protector that adopts composite to make except the protective action to explosion hazard, can guarantee the flexible jet cutter that adopts and the appropriate coupling that bends mutual alignment between the metal component surface again; The accurate propagation of explosion technology that the flexible jet cutter that the jet that adopts a flexible jet cutter to produce will be adjacent is ignited is guaranteed the continuously reliable propagation of explosion of various jet cutter, becomes the wall thickness hardware thereby cut the cross section bending reliable and securely.
Description of drawings
Fig. 1 is the structural representation that cross section of the present invention bends flexible jet cutter in the cumulative cutting method that becomes the wall thickness hardware.
Fig. 2 is that cross section of the present invention bending becomes flexible jet cutter in the cumulative cutting method of wall thickness hardware and is installed on structural representation on the hardware to be cut.
Fig. 3 be cross section of the present invention bending become protector in the cumulative cutting method of wall thickness hardware be installed on the hardware to be cut structural representation.
Fig. 4 is the structural representation that cross section of the present invention bends protector in the cumulative cutting method that becomes the wall thickness hardware.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
The bending of a kind of cross section becomes the cumulative cutting method of wall thickness hardware, and this method may further comprise the steps:
(1) selecting cavity liner and powder charge shell for use is the flexible jet cutter of one.As shown in Figure 1, adopting cavity liner 11 and powder charge shell 12 is the flexible jet cutter 10 of one, explosive 13 principal components are RDX, cavity liner 11 and powder charge shell 12 are lead-antimony alloy, explosive payload, the shape and size of cavity liner 11 shape and size and powder charge all realize reasonable coupling, powder charge does not allow to occur interrupted, powder charge line density mean square deviation≤0.05 on used flexible jet cutter 10 total lengths.
The principal element that type selecting is considered is operating ambient temperature, cutting power, version and the hard and soft property of cutter.Because cutting object is the bending hardware, so select flexible linear cavity effect cutter, the making material of this jet cutter all meets relevant national military standard regulation (GB/T1472-2005 " lead and lead-antimony alloy pipe ", GJB296A-1195 " RDX standard ").
(2) to the metal level to be cut of different wall in the hardware, adopt the flexible jet cutter of different explosive payloads; Be the reliability of assurance otch perforation and the planarization of section, the explosive payload of various cutter has all been carried out accurate quantification in line with minimizing the principle that adds 30% redundancy.For example, see also shown in Figure 2ly, the thickness at A place is 2.5mm in the described metal level to be cut, and the thickness at B place is 2mm, and the thickness at C place is 2.5mm, and the thickness at D place is 1.8mm.Adopt different flexible jet cutters 21,22,23,24,25,26 at different wall, the powder charge line density is respectively 2.1g/m, 6.6g/m, 3.59g/m, 3.59g/m, 2.1g/m, 2.1g/m.
(3) head and the tail with each flexible jet cutter overlap mutually, and are arranged in the mounting groove of protector, and the protector of flexible jet cutter will be installed then, use epoxide-resin glue to be bonded in each layer on surface of metal to be cut of hardware.See also shown in Figure 2, flexible jet cutter to different model, different length, adopt accurate space to lay scheme, and make various flexible jet cutter produce appropriate flexural deformation, can reach with the curved metal member surface that is cut and form appropriate cooperation position.Wherein the flexible jet cutter 22,25 among Fig. 2 namely produces appropriate flexural deformation to form appropriate cooperation position with the curved metal member surface.
(4) ignite first flexible jet cutter, the jet that this first flexible jet cutter produces can be ignited adjacent flexible jet cutter from end face or back.The flexible jet cutter that the next one is detonated is ignited other adjacent flexible jet cutters again, all ignites until all flexible jet cutters.And, adopt the jet cutter of big explosive payload to ignite to the mode of jet cutter (or between jet cutter of the equal explosive payload) propagation of explosion of little explosive payload.For guaranteeing reliable propagation of explosion, the mode of overlap joint is all adopted in the connection of all flexible jet cutters, and lap-joint uses epoxide-resin glue bonding.See also shown in Figure 2, adopt the flexible jet cutter 22 of 30 pairs of explosive payload maximums of detonator to ignite in the present embodiment earlier, follow flexible jet cutter 21,23 ignition that flexible jet cutter 22 will be adjacent from the back, follow flexible jet cutter 23 and ignite the flexible jet cutter 24 that is adjacent from end face, flexible jet cutter 24 is ignited the flexible jet cutter 25 that is adjacent from end face, flexible jet cutter 25 is ignited the flexible jet cutter 26 that is adjacent from the back, thereby finishes whole ignition.The accurate propagation of explosion technology that the flexible jet cutter that the jet that this kind adopts a flexible jet cutter to produce will be adjacent is ignited is guaranteed the continuously reliable propagation of explosion of various jet cutter, thereby the bending of the cross section of fast and reliable cutting becomes the wall thickness hardware.
(5) cutting is finished.
See also Fig. 3 and shown in Figure 4, described flexible jet cutter has covering protector 40 thereon outward, this protector 40 draws the material crosswise lamination to form by carbon fiber and Kev, mounting groove and the propagation of explosion groove that flexible jet cutter is installed left in inside, for laying and the overlap joint of flexible jet cutter facilitates.Comprise flexible jet cutter mounting groove 41,43 and flexible jet cutter propagation of explosion groove 42.The structure of protector 40 and jet cutter body and member profile are complementary.Installation method such as a mistake! Do not find Reference source.Shown in, wherein: 40 is protector, and 50 for being cut hardware, and 44 are position, detonator hole (the detonator installing hole that adopts double detonator multiple priming mode is provided in the present embodiment).The antiknock ability of protector 40 and the bursting strength of flexible jet cutter and security protection require coupling rationally; Guarantee that the metal flying that flexible jet cutter produces does not cause any harm to the personnel in the 0.5 meter scope in quick-fried source, and the positive pressure of shock wave and the noise-cut 60% that in 0.10 to 1.0 meter scope, flexible jet cutter are produced.
Claims (4)
1. a cross section bends the cumulative cutting method that becomes the wall thickness hardware, and it is characterized in that: this method may further comprise the steps:
(1) selecting cavity liner and powder charge shell for use is the flexible jet cutter of one;
(2) to the metal level to be cut of different wall in the hardware, adopt the flexible jet cutter of different explosive payloads;
(3) provide protector, the groove that flexible jet cutter is installed is left in this protector inside, each flexible jet cutter head and the tail is overlapped mutually, and be arranged in the mounting groove of protector;
(4) protector of flexible jet cutter will be installed, and use epoxide-resin glue to be bonded in each layer on surface of metal to be cut of hardware;
(5) ignite first flexible jet cutter, the flexible jet cutter that the jet that this first flexible jet cutter produces will be adjacent is ignited, the flexible jet cutter that the next one is detonated is ignited adjacent cutter again, all ignites until all cutters;
(6) cutting is finished.
2. cross section bending according to claim 1 becomes the cumulative cutting method of wall thickness hardware, it is characterized in that: in the step (5), the jet cutter that adopts big explosive payload carries out propagation of explosion in the mode of jet between the jet cutter of the jet cutter of little explosive payload or equal explosive payload.
3. cross section bending according to claim 1 becomes the cumulative cutting method of wall thickness hardware, it is characterized in that: in the step (3), each flexible jet cutter produces appropriate flexural deformation, and the curved surface that can reach with metal level to be cut forms appropriate cooperation position.
4. cross section according to claim 3 bending becomes the cumulative cutting method of wall thickness hardware, it is characterized in that: in the protector at the flexible jet cutter place of line density maximum, leave for the detonator installing hole that adopts double detonator multiple priming mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549062 CN102042785B (en) | 2010-11-18 | 2010-11-18 | Cumulative cutting method for wall-thickness variable metal component with bent cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549062 CN102042785B (en) | 2010-11-18 | 2010-11-18 | Cumulative cutting method for wall-thickness variable metal component with bent cross section |
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| Publication Number | Publication Date |
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| CN102042785A CN102042785A (en) | 2011-05-04 |
| CN102042785B true CN102042785B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010549062 Expired - Fee Related CN102042785B (en) | 2010-11-18 | 2010-11-18 | Cumulative cutting method for wall-thickness variable metal component with bent cross section |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105698620A (en) * | 2016-03-23 | 2016-06-22 | 中国工程物理研究院化工材料研究所 | Detonation intensifier used for explosion propagation of small-explosive-quantity cutting rope |
| CN112122765A (en) * | 2020-09-22 | 2020-12-25 | 中国工程物理研究院化工材料研究所 | Flexible energy-gathering wire cutter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649824A (en) * | 1985-06-27 | 1987-03-17 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for aerospace vehicle separation events using a linear shaped charge |
| US5170004A (en) * | 1991-08-05 | 1992-12-08 | Teledyne Industries, Inc. | Hydraulic severance shaped explosive |
| CN101476847A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Cutting method for plane body cover during emergency decompression in passenger plane test flight |
| CN101476846A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Cutting method for emergency opening hinge plate of passenger plane test flight service cabin door |
-
2010
- 2010-11-18 CN CN 201010549062 patent/CN102042785B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649824A (en) * | 1985-06-27 | 1987-03-17 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for aerospace vehicle separation events using a linear shaped charge |
| US5170004A (en) * | 1991-08-05 | 1992-12-08 | Teledyne Industries, Inc. | Hydraulic severance shaped explosive |
| CN101476847A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Cutting method for plane body cover during emergency decompression in passenger plane test flight |
| CN101476846A (en) * | 2009-02-16 | 2009-07-08 | 中国人民解放军理工大学工程兵工程学院 | Cutting method for emergency opening hinge plate of passenger plane test flight service cabin door |
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| CN102042785A (en) | 2011-05-04 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Yaohua Inventor after: Chen Zhifu Inventor after: Jin Guangqian Inventor after: Xiong Wei Inventor after: Lu Ming Inventor after: Jian Jianzhong Inventor after: Gu Yuebing Inventor after: Liu Xiuming Inventor after: Long Yuan Inventor after: Liu Ying Inventor after: Li Chunyi Inventor before: Wang Yaohua Inventor before: Jin Guangqian Inventor before: Xiong Wei Inventor before: Lu Ming Inventor before: Jian Jianzhong Inventor before: Gu Yuebing Inventor before: Liu Xiuming Inventor before: Long Yuan Inventor before: Liu Ying Inventor before: Li Chunyi Inventor before: Chen Zhifu |
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Free format text: CORRECT: INVENTOR; FROM: WANG YAOHUA LU MING JIAN JIANZHONG GU YUEBING LIU XIUMING LONG YUAN LIU YING LI CHUNYI CHEN ZHIFU JIN GUANGQIAN XIONG WEI TO: WANG YAOHUA XIONG WEI LU MING JIAN JIANZHONG GU YUEBING LIU XIUMING LONG YUAN LIU YING LI CHUNYI CHEN ZHIFU JIN GUANGQIAN |
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