CN102248376B - Machining method of porous thin-wall protective tube with large length-diameter ratio - Google Patents
Machining method of porous thin-wall protective tube with large length-diameter ratio Download PDFInfo
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- CN102248376B CN102248376B CN 201110176996 CN201110176996A CN102248376B CN 102248376 B CN102248376 B CN 102248376B CN 201110176996 CN201110176996 CN 201110176996 CN 201110176996 A CN201110176996 A CN 201110176996A CN 102248376 B CN102248376 B CN 102248376B
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Abstract
The invention discloses a machining method of a porous thin-wall protective tube with a large length-to-diameter ratio. The method comprises the following steps of: firstly cutting a tube material at a desired length of the protective tube; heating to melt a low-temperature lead/tin alloy material into liquid and then pouring the molten alloy into the inner hole of the tube material; clamping a threaded plug at one end of the tube material by use of a dividing head chuck, compacting a threaded plug at the other end of the tube material by use of a miller center, and straightening and clamping the two sides of the outer wall of the tube material by use of flat tongs; milling kidney-shaped holes which are uniformly distributed on the wall of the tube material by use of a milling cutter which is mounted on a numerically-controlled milling machine, and milling kidney-shaped holes which are arranged in rows in the axial direction of the tube material; and vertically hanging the tube material subjected to milling, and heating such that the low-temperature lead/tin alloy material is molten and breaks away from the inner hole of the tube material, thus obtaining the porous thin-wall protective tube with large length-to-diameter ratio. The process of machining the porous thin-wall protective tube with large length-to-diameter ratio by the method disclosed in the invention has the advantages that the rate of qualified products is high and is up to above 99%; the machining accuracy is increased and fully meets the design requirement on product accuracy; and the machining efficiency is increased by more than 50%.
Description
Technical field
The present invention relates to the uniform hole of elongated thin-walled is the process technology of steel pipe, refers to particularly a kind of processing method of big L/D ratio stephanoporate thin wall pillar.
Background technology
The pillar that is evenly equipped with mounting hole on the tube wall is the strength member in the primary and secondary bullet scattering mechanism.Scattering mechanism and bullet housing, bullet subsystem, separate quick-fried and shed igniting subsystem etc. and consist of the bullet subsystem.Under the effect of shedding the igniting subsystem, ignition charge in the transmitter is lighted, from ignitron, eject, light propellant powder, the high temperature, the gases at high pressure that form after the gun propellant combustion eject from pillar, after all pressing in the aluminium foil cylinder, the radial push bellows, bellows promotes bullet, and bullet is evenly shed away, hits predeterminated target.The effect of pillar is the strength and stiffness that increase transmitter, and can not hinder flowing of emission gas.Therefore, the muscle between the pillar mounting hole is wide should get less numerical value satisfying under the prerequisite of strength and stiffness, and better design parameter is 1.2～2.5mm.If muscle is wide less than 1.2mm, the pillar existence is launched the hidden danger that flame adds thermal deformation or fusing, affects the Uniform Flow of air-flow, thereby affects strike scope and the strike effect of armament systems.
At present, pillar in the primary and secondary bullet scattering mechanism is big L/D ratio, porous, thin-walled high-quality structural steel or high intensity aluminium alloy pipe class part, its draw ratio 20～40, length 400～1600mm, outside diameter 20～100mm, tube wall thickness 1～3mm, mounting hole quantity 100～600.
Existing pillar processing process is: behind the pipe feeding, at its two ends external threading, use the NC Milling mounting hole, mounting hole needs milling cutter repeatedly to process feeding.Adopt existing processes mounting hole, because that the used tubing draw ratio of pillar reaches greatly wall is thin, the poor rigidity of pillar, pillar centering, not refinement of processing request, do not optimize, the qualification rate of product processing is less than 50%, and the machining accuracy of product is low, and working (machining) efficiency is low.
Summary of the invention
Purpose of the present invention will overcome the deficiencies in the prior art exactly, and a kind of processing method that can improve the big L/D ratio stephanoporate thin wall pillar of product percent of pass and machining accuracy and efficient is provided.
For achieving the above object, the processing method of the big L/D ratio stephanoporate thin wall pillar that the present invention is designed may further comprise the steps:
1) pipe feeding: the big L/D ratio thin-wall pipes is cut into the required length of pillar, and at its two ends turning external screw thread;
2) cast low temperature lead ashbury metal: after low temperature lead ashbury metal heat fused is liquid, be poured in the endoporus of tubing two ends screw plug shutoff, vertical hanging then, room temperature cooled and solidified;
3) install, centering: with the screw plug of dividing head chuck clamping tubing one end, hold out against the screw plug of the tubing other end with miller center, the both sides of outer pipe wall clamp with a plurality of flat-nose pliers alignments;
4) mounting hole mills processing: according to the designing requirement of uniform mounting hole on the tube wall of tubing, on CNC milling machine, with milling cutter tubing is milled processing, along tubing axially process one row mounting hole after, unclamp flat-nose pliers, rotate dividing head chuck, make the Working position that is in the second row mounting hole behind the pipe graduation; Holding plain vice mills processing second row mounting hole again; With identical method, process remainder and respectively arrange mounting hole;
5) the low temperature lead ashbury metal reclaims: will mill the tubing vertical hanging heating that processes, and make the endoporus of low temperature lead ashbury metal fusing disengaging tubing wherein, the big L/D ratio stephanoporate thin wall pillar that can obtain to process.
Further, said step 2) in, the low temperature lead ashbury metal is comprised of 55～65% lead and 45～35% tin according to mass percent.
Further, said step 2) and step 5) in, the heat fused temperature of low temperature lead ashbury metal is 210～260 ℃.
Further, said step 2) in, the cooled and solidified time of low temperature lead ashbury metal is 1～2h.
Further, said step 3) and step 4) in, the spacing of adjacent flat brank is 150～300mm.
Further, said step 3) and step 4) in, the straightness error of side, flat-nose pliers location is not more than 0.1mm.
Further, said step 4) in, milling cutter adopts the diameter sizing cotter mill cutter identical with the mounting hole width, mounting hole of one-pass milling.
Beneficial effect of the present invention is: the present invention adopts the rigidity of cast low temperature lead ashbury metal increase pillar in the pillar hole; The flat-nose pliers Supplements clamp to guarantee that the theoretical working position one of the actual working position of pillar and technological design is shown and reduces the Working position error; A milling of cotter mill cutter sizing is to keep pillar processing rigidity and to reduce the repeatedly feeding error of processing.Adopt method provided by the present invention to carry out the processing of big L/D ratio stephanoporate thin wall pillar, have the following advantages:
One, product percent of pass, is brought up to more than 99% less than 50% by conventional milling processing.
Its two, machining accuracy is higher, satisfies the product design required precision fully: the wide 1.2mm of being not less than of muscle between the product design documentation requirements mounting hole, permissible variation be 0～+ 0.6mm; The wide 1.3mm of being not less than of muscle between the actual mounting hole that processes, deviation is+0.1～+ 0.5mm.
Its three, working (machining) efficiency improves more than 50%.
Description of drawings
Fig. 1 is that big L/D ratio stephanoporate thin wall pillar is at the main TV structure schematic diagram of machining state.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the structure for amplifying schematic diagram of pillar among Fig. 1.
Fig. 4 is the Z-Z sectional structure schematic diagram among Fig. 3.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1:
Adopting material for Φ 30mm * 1008mm pillar is No. 45 high-quality structural steels.
Adopt domestic vertical numerical control milling machine, the technical process of pillar processing is as follows:
1) pipe feeding: big L/D ratio thin-wall pipes 3 is cut into the required length of pillar, and at its two ends turning external screw thread, the length of tubing 3 is 1008mm, outside diameter is Φ 30mm, and draw ratio is 33.6, and tube wall thickness is 1.5mm;
2) cast low temperature lead ashbury metal: will put into rustless steel container by the low temperature lead ashbury metal that the tin of 55% lead and 45% forms according to mass percent, be liquid 210 ℃ of heat fused; With stainless steel spoon and funnel with low temperature lead ashbury metal liquid castable in the endoporus of tubing 3, two ends are with screw plug 2 shutoff, vertical hanging then, room temperature cooled and solidified, cooling 1.5h;
3) installation, centering: with the screw plug 2 of dividing head chuck 6 clamping tubing 3 one ends, hold out against the screw plug 2 of tubing 3 other ends with miller center 1, after the straightness error of side, centering flat-nose pliers 7 location is not more than 0.1mm, with the flat-nose pliers 7 alignment clampings that the both sides of tubing 3 outer walls are 200mm with 3 width, the spacing of adjacent flat brank 7 is 150mm;
4) mounting hole mills processing: at tubing 3 wall circumference 12 five equilibriums 408 mounting hole 5 is arranged, the long L in the hole of mounting hole is 26mm, the wide A in hole is 6mm, the wide B of muscle between the mounting hole 5 is 1.2mm～1.8mm, mill processing at CNC milling machine with diameter and 4 pairs of tubing 3 of milling cutter that the wide A in the hole of mounting hole 5 is all 6mm mutually, along tubing 3 axially process one row mounting hole 5 after, unclamp flat-nose pliers 7, rotate dividing head chuck 6, make the Working position that is in second row mounting hole 5 behind 30 ° of tubing 3 calibration, holding plain vice 7 mills processing second row mounting hole 5; With identical method, process 10 remaining row's mounting holes;
5) the low temperature lead ashbury metal reclaims: will mill the tubing 3 that processes and be hung vertically in the resistance-heated furnace in 210 ℃ of heating, and make wherein low temperature lead ashbury metal fusing break away from the endoporus of tubing 3, the big L/D ratio stephanoporate thin wall pillar that can obtain to process; After breaking away from, the fusing of low temperature lead ashbury metal collects rear recycling with rustless steel container.
The pillar that machining gets, the wide 1.3mm that is not less than of the muscle of its mounting hole, deviation is+0.1～+ 0.5mm, machining accuracy is higher, satisfies the product design required precision.
Embodiment 2:
Adopting material for Φ 39mm * 780mm pillar is the LF6M rustproof aluminum alloy.
Adopt domestic vertical numerical control milling machine, the technical process of pillar processing is as follows:
1) pipe feeding: big L/D ratio thin-wall pipes 3 is cut into the required length of pillar, and at its two ends turning external screw thread, the length of tubing 3 is 780mm, outside diameter is Φ 39mm, and draw ratio is 20, and tube wall thickness is 1.5mm;
2) cast low temperature lead ashbury metal: will put into rustless steel container by the low temperature lead ashbury metal that the tin of 65% lead and 35% forms according to mass percent, be liquid 260 ℃ of heat fused; With stainless steel spoon and funnel with low temperature lead ashbury metal liquid castable in the endoporus of tubing 3, two ends are with screw plug 2 shutoff, vertical hanging then, the room temperature cooled and solidified was cooled off 1.5 hours;
3) installation, centering: with the screw plug 2 of dividing head chuck 6 clamping tubing 3 one ends, hold out against the screw plug 2 of tubing 3 other ends with miller center 1, after the straightness error of side, centering flat-nose pliers 7 location is not more than 0.1mm, with the both sides of the tubing 3 outer walls flat-nose pliers 7 alignment clampings that are 200mm with 2 width, the distance between two flat-nose pliers 7 sides is 280mm;
4) mounting hole mills processing: at tubing 3 wall circumference 16 five equilibriums 432 mounting hole 5 is arranged, the long L in the hole of mounting hole is 24mm, and the wide A in hole is 6mm, and the wide B of the muscle between the mounting hole 5 is 1.2mm～1.7mm; Mill processing at CNC milling machine with diameter and 4 pairs of tubing 3 of milling cutter that the wide A in the hole of mounting hole 5 is all 6mm mutually, along tubing 3 axially process one row mounting hole 5 after, unclamp flat-nose pliers 7, rotate dividing head chuck 6, make the Working position that is in second row mounting hole 5 behind 22.5 ° of tubing 3 calibration, holding plain vice 7 mills processing second row mounting hole 5; With identical method, process 14 remaining row's mounting holes 5;
5) the low temperature lead ashbury metal reclaims: will mill the tubing 3 that processes and be hung vertically in the resistance-heated furnace in 260 ℃ of heating, and make wherein low temperature lead ashbury metal fusing break away from the endoporus of tubing 3, the big L/D ratio stephanoporate thin wall pillar that can obtain to process; After breaking away from, the fusing of low temperature lead ashbury metal collects rear recycling with rustless steel container.
The pillar that machining gets, the wide 1.3mm that is not less than of the muscle of its mounting hole, actual deviation is+0.1～+ 0.4mm, machining accuracy is higher, satisfies the product design required precision.
Claims (10)
1. the processing method of a big L/D ratio stephanoporate thin wall pillar may further comprise the steps:
1) pipe feeding: big L/D ratio thin-wall pipes (3) is cut into the required length of pillar, and at its two ends turning external screw thread;
2) cast low temperature lead ashbury metal: after low temperature lead ashbury metal heat fused is liquid, be poured in the endoporus of tubing (3), two ends are with screw plug (2) shutoff, vertical hanging then, room temperature cooled and solidified;
3) installation, centering: with the screw plug (2) of dividing head chuck (6) clamping tubing (3) one ends, hold out against the screw plug (2) of tubing (3) other end with miller center (1), the both sides of tubing (3) outer wall clamp with a plurality of flat-nose pliers (7) alignment;
4) mounting hole mills processing: the designing requirement of uniform mounting hole (5) on the tube wall according to tubing (3), with milling cutter (4) tubing (3) is milled processing at CNC milling machine, after axially processing row mounting hole (5) along tubing (3), unclamp flat-nose pliers (7), rotate dividing head chuck (6), make the Working position that is in second row mounting hole (5) behind tubing (3) calibration; Holding plain vice (7) mills processing second row mounting hole (5) again; With identical method, process remainder and respectively arrange mounting hole (5);
5) the low temperature lead ashbury metal reclaims: will mill tubing (3) the vertical hanging heating that processes, make the endoporus of low temperature lead ashbury metal fusing disengaging tubing (3) wherein, the big L/D ratio stephanoporate thin wall pillar that can obtain to process, the draw ratio 20 ~ 40 of described big L/D ratio stephanoporate thin wall pillar, wall thickness are 1 ~ 3mm, and mounting hole quantity is 100 ~ 600.
2. the processing method of big L/D ratio stephanoporate thin wall pillar according to claim 1 is characterized in that: said step 2), the low temperature lead ashbury metal is comprised of 55 ~ 65% lead and 45 ~ 35% tin according to mass percent.
3. the processing method of big L/D ratio stephanoporate thin wall pillar according to claim 2 is characterized in that: said step 2) and in the step 5), the heat fused temperature of low temperature lead ashbury metal is 210 ~ 260 ℃.
4. according to claim 1 and 2 or the processing method of 3 described big L/D ratio stephanoporate thin wall pillars, it is characterized in that: said step 2), the cooled and solidified time of low temperature lead ashbury metal is 1 ~ 2h.
5. according to claim 1 and 2 or the processing method of 3 described big L/D ratio stephanoporate thin wall pillars, it is characterized in that: in said step 3) and the step 4), the spacing of adjacent flat brank (7) is 150 ~ 300mm.
6. the processing method of big L/D ratio stephanoporate thin wall pillar according to claim 4, it is characterized in that: in said step 3) and the step 4), the spacing of adjacent flat brank (7) is 150 ~ 300mm.
7. according to claim 1 and 2 or the processing method of 3 described big L/D ratio stephanoporate thin wall pillars, it is characterized in that: in said step 3) and the step 4), the straightness error of side, flat-nose pliers (7) location is not more than 0.1mm.
8. the processing method of big L/D ratio stephanoporate thin wall pillar according to claim 4 is characterized in that: in said step 3) and the step 4), the straightness error of side, flat-nose pliers (7) location is not more than 0.1mm.
9. according to claim 1 and 2 or the processing method of 3 described big L/D ratio stephanoporate thin wall pillars, it is characterized in that: in the said step 4), milling cutter (4) adopts the diameter sizing cotter mill cutter identical with mounting hole (5) width, mounting hole of one-pass milling.
10. the processing method of big L/D ratio stephanoporate thin wall pillar according to claim 4, it is characterized in that: in the said step 4), milling cutter (4) adopts the diameter sizing cotter mill cutter identical with mounting hole (5) width, mounting hole of one-pass milling.
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| CN102248376B true CN102248376B (en) | 2013-03-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073387A (en) * | 1991-12-17 | 1993-06-23 | 沈阳市火炬科技开发公司 | The electrochemistry of production screen and mechanical combined machining method and equipment |
| US6871556B2 (en) * | 2001-07-27 | 2005-03-29 | The Regents Of The University Of California | Porous protective solid phase micro-extractor sheath |
| CN101066570A (en) * | 2007-05-18 | 2007-11-07 | 云南大为化工装备制造有限公司 | Numerically controlled process of cutting spatial curved surface for inserting inclined pipe to barrel |
| CN101462136A (en) * | 2009-01-11 | 2009-06-24 | 河南省汤阴县华兴机械制造有限公司 | Hole punching technological process of nodular cast iron material thin wall piece |
| CN101943205A (en) * | 2010-08-30 | 2011-01-12 | 贵州航天新力铸锻有限责任公司 | Manufacturing method for ultrathin tegular locking plate of nuclear reactor pressure vessel main bolt |
-
2011
- 2011-06-28 CN CN 201110176996 patent/CN102248376B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073387A (en) * | 1991-12-17 | 1993-06-23 | 沈阳市火炬科技开发公司 | The electrochemistry of production screen and mechanical combined machining method and equipment |
| US6871556B2 (en) * | 2001-07-27 | 2005-03-29 | The Regents Of The University Of California | Porous protective solid phase micro-extractor sheath |
| CN101066570A (en) * | 2007-05-18 | 2007-11-07 | 云南大为化工装备制造有限公司 | Numerically controlled process of cutting spatial curved surface for inserting inclined pipe to barrel |
| CN101462136A (en) * | 2009-01-11 | 2009-06-24 | 河南省汤阴县华兴机械制造有限公司 | Hole punching technological process of nodular cast iron material thin wall piece |
| CN101943205A (en) * | 2010-08-30 | 2011-01-12 | 贵州航天新力铸锻有限责任公司 | Manufacturing method for ultrathin tegular locking plate of nuclear reactor pressure vessel main bolt |
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