CN104511514B - A kind of core rod hydrostatic extrusion hollow profile device with activity stud - Google Patents
A kind of core rod hydrostatic extrusion hollow profile device with activity stud Download PDFInfo
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- CN104511514B CN104511514B CN201510019636.5A CN201510019636A CN104511514B CN 104511514 B CN104511514 B CN 104511514B CN 201510019636 A CN201510019636 A CN 201510019636A CN 104511514 B CN104511514 B CN 104511514B
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- core rod
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Abstract
The invention discloses a kind of core rod hydrostatic extrusion hollow profile device with activity stud, including recipient, core rod, recipient base, also include movable stud and limit element, recipient base is arranged on recipient one end, core rod is arranged in recipient, core rod root is fixed on recipient base center, the sidewall of core rod is provided with limit element, slide core support set is on core rod outer wall, and it is positioned at above limit element, for supporting stud, and it is movable to limit support stud, the inwall of movable stud is along the side walls of core rod, the outer wall of movable stud slides along the inwall of recipient.Advantages of the present invention is by increase activity stud on core rod, improves the stress of core rod, improves the rigidity of core rod, and increases the intensity of core rod.
Description
Technical field
The invention belongs to hydrostatic extrusion apparatus field, be specifically related to a kind of core rod hydrostatic extrusion hollow profile device with activity stud.
Background technology
Section bar be ferrum or steel and the material (such as plastics, aluminum, glass fibre etc.) with some strength and toughness by rolling, extrusion, the object with certain geometrical shape that the technique such as casting is made.Section bar is divided into solid profile and hollow profile two kinds.Hollow profile refers to that there is the section bar of one or more closing through hole transverse section, such as thick-walled tube, thin-wall circular tube, rectangular tube, drop shaped tube etc..Aeronautics and Astronautics, automobile, machine-building, boats and ships, building, finishing and chemical industry are widely applied.
Extruding is one of common preparation method of hollow profile, including the method such as mechanical presses and hydrostatic extrusion.Hydrostatic extrusion technique is a kind of novel material processing technique method, it is possible to conventional deformation technique difficult to machine material is carried out crimp processing.It is by superhigh pressure sealing, is placed in by extrusion blank in the sealed environment being around full of supertension medium, transmits pressure by supertension medium and realizes crimp.Extrude compared to conventional mechanical, extrusion blank is surrounded by superhigh pressure liquid medium when hydrostatic liquid extrusion pressing deforming, it is in three-dimensional compressive stress state, blank material deformation can be more uniform, the plasticity of material also can obtain and improve to a certain extent simultaneously, thus the material that the processing of other deformation technique difficulty can maybe can not be processed by hydrostatic extrusion technique carries out plastic working.Based on these advantages, hydrostatic extrusion technique worldwide obtains and greatly develops, and is used widely, and achieves significant deformation strengthening effect on the materials such as aluminum, magnesium, high-speed steel.
Core rod is the essential element of hydrostatic extrusion hollow profile, document " abundant outstanding .AZ80 magnesium alloy pipe hydrostatic extrusion extension forming technical study [D] of Wang.Institutes Of Technology Of Nanjing, 2014 " core rod that (P21) provides is as shown in Figure 1.Visible core rod is fixed on base, belongs to the cantilever beam of a kind of single fulcrum from stress.In extrusion process, core rod is susceptible to disalignment phenomenon away from base end, causes that profile wall thickness ununiformity is even, eccentric, and the transverse breakage of core rod or the phenomenon of longitudinal fracture even occur.
Summary of the invention
It is an object of the invention to provide a kind of core rod hydrostatic extrusion hollow profile device with activity stud, solve core rod in hydrostatic extrusion process and be susceptible to deviation, cause that profile wall thickness ununiformity is even, eccentric, even there is the transverse breakage of core rod or the problem of longitudinal fracture.
The technical solution realizing the object of the invention is: a kind of core rod hydrostatic extrusion hollow profile device with activity stud, including recipient, core rod, recipient base, also include movable stud and limit element, recipient base is arranged on recipient one end, core rod is arranged in recipient, core rod root is fixed on recipient base center, the sidewall of core rod is provided with limit element, slide core support set is on core rod outer wall, and it is positioned at above limit element, for supporting stud, and it is movable to limit support stud, the inwall of movable stud is along the side walls of core rod, the outer wall of movable stud slides along the inwall of recipient.
Above-mentioned movable stud includes loose collar, movable part and sealing ring, loose collar is enclosed within core rod outer wall, it is circumferentially with P the first groove along loose collar inwall, P >=1, first groove is provided with N number of movable part, N >=1, is additionally provided with Q annular second groove along loose collar inwall circumference, is provided with sealing ring in the second groove；It is circumferentially with K the 3rd groove, K >=1 along loose collar outer wall, the 3rd groove is provided with M movable part, M >=1, is additionally provided with L annular the 4th groove, L >=1 along loose collar outer wall circumference, the 4th groove is provided with sealing ring.
Have at least between second groove and core rod root and there is no the first groove；Have at least between one article of the 4th groove and core rod root and there is no the 3rd groove.
Above-mentioned movable part is ball, roller or needle roller.
The present invention is compared with prior art, its remarkable advantage: by increase activity stud on core rod, improve the stress of core rod, base and the simply supported beam stress of the common passive pair of fulcrum of stud is become by original only passive single pivot point suspending arm beam-like state of base, improve the rigidity of core rod, and increase the intensity of core rod, it is possible to the profile wall thickness ununiformity avoiding extrusion is even,, even there is the transverse breakage of core rod or the phenomenon of longitudinal fracture in bias.
Accompanying drawing explanation
Fig. 1 is the core rod of the present invention hydrostatic extrusion hollow profile device schematic diagram with activity stud.
Fig. 2 is the axis profile of the movable stud of the present invention.
Fig. 3 is the core side view of the embodiment of the present invention 1.
Fig. 4 is the core rod top view of the embodiment of the present invention 1.
Fig. 5 is the mold core A-A sectional view of the embodiment of the present invention 1.
Fig. 6 is the movable stud top view of the embodiment of the present invention 1.
Fig. 7 is the movable stud B-B sectional view of the embodiment of the present invention 1.
Fig. 8 is the embodiment of the present invention 2 core side view.
Fig. 9 is the core rod top view of the embodiment of the present invention 2.
Figure 10 is the core rod C-C sectional view of the embodiment of the present invention 2.
Figure 11 is the movable stud top view of the embodiment of the present invention 2.
Figure 12 is the movable stud long limit schematic diagram of the embodiment of the present invention 2.
Figure 13 is the movable stud minor face schematic diagram of the embodiment of the present invention 2.
Figure 14 is the movable stud D-D sectional view of the embodiment of the present invention 2.
Figure 15 is the core rod top view of the embodiment of the present invention 3.
Figure 16 is the core rod front view of the embodiment of the present invention 3.
Figure 17 is the core rod E-E sectional view of the embodiment of the present invention 3.
Figure 18 is the movable stud top view of the embodiment of the present invention 3.
Figure 19 is the movable stud front view of the embodiment of the present invention 3.
Figure 20 is the sectional view of the movable stud F-F of the embodiment of the present invention 3.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In conjunction with Fig. 1-Fig. 2, a kind of core rod hydrostatic extrusion hollow profile device with activity stud, including recipient 4, core rod 5, recipient base 9, also include movable stud 6 and limit element 8, recipient base 9 is arranged on recipient 4 one end, core rod 5 is arranged in recipient 4, core rod 5 root is fixed on recipient base 9 center, the sidewall of core rod 5 is provided with limit element 8, movable stud 6 is enclosed within core rod 5 outer wall, and it is positioned at above limit element 8, for supporting stud 6, and it is movable to limit support stud 6, the inwall of movable stud 6 is along the side walls of core rod 5, the outer wall of movable stud 6 slides along the inwall of recipient 4.
Above-mentioned movable stud 6 includes loose collar 10, movable part 11 and sealing ring 13, loose collar 10 is enclosed within core rod 5 outer wall, it is circumferentially with P the first groove along loose collar 10 inwall, P >=1, first groove is provided with N number of movable part 11, N >=1, is additionally provided with Q annular second groove along loose collar 10 inwall circumference, is provided with sealing ring 13 in the second groove；It is circumferentially with K the 3rd groove, K >=1 along loose collar 10 outer wall, the 3rd groove is provided with M movable part 11, M >=1, be additionally provided with L annular the 4th groove, L >=1 along loose collar 10 outer wall circumference, the 4th groove is provided with sealing ring 13.
Above-mentioned movable part 11 is ball, roller or needle roller.
Above-mentioned second groove is positioned at below the first groove, and with core rod 5 bottom homonymy.
Have at least between second groove and core rod 5 root and there is no the first groove；Have at least between one article of the 4th groove and core rod 5 root and there is no the 3rd groove.
Above-mentioned limit element 8 one end is circumferentially fixed on the sidewall of core rod 5 along the sidewall of core rod 5, and free end is folded upward at, and with the sidewall contact of core rod 5, limit element 8 is wedge shaped, is used for supporting stud 6, and it is movable to limit support stud 6.
Hydrostatic extrusion hollow profile process is as follows:
Step 1, by limit element 8 activity stud 6 moved to appointment position, in the first cavity 7 that movable stud 6 top, core rod 5 and recipient 4 are formed, add lubricating oil, lubricating oil enters in the rolling member 11 of movable stud 6, play lubrication, and sealed by the sealing ring 13 being positioned on loose collar 10 sidewall of movable stud 6 so that it is not toward dirty.
Step 2, blank 2 is put into recipient 4 from the entrance of recipient 4 so that it is be positioned at above core rod 5.
Step 3, the second cavity 1 formed between blank 2 top and recipient 4 add lubricating oil, along with the increase of lubricating oil, form pressure, promote blank 2 downward, it is divided in the first cavity 7 through core rod top 3, when forming enough pressure, the lubricating oil promotion activity stud 6 in the first cavity 7 retreats, and extrudes limit element 8, there is elastic deformation in limit element 8, and it being pressed in core rod 5, it is ensured that movable stud 6 retreats, until completing extruding.
Step 4, the hydrostatic extrusion hollow profile taken out from recipient 4.
Embodiment 1
Hydrostatic extrusion prepares 10 cylindrical steel tube materials, finished product external diameter 200mm, internal diameter 100mm.
Recipient 4 internal diameter 200mm.
Blank 2 size: external diameter 200mm, height 400mm.
Second groove external diameter 110mm, width 10mm, degree of depth 4mm, the 4th groove external diameter 200mm, width 20mm, degree of depth 8mm of loose collar 10.
Sealing ring 13 is divided into the first sealing ring 13-1 and the second sealing ring 13-2, is O RunddichtringO, wherein the first sealing ring 13-1 external diameter 110mm, internal diameter 100mm, height 10mm, is stuck in the second groove, and its top highlights the second groove.Second sealing ring 13-2 external diameter 200mm, internal diameter 180mm, height 20mm, be stuck in the 4th groove, and its top highlights the 4th groove, it is achieved seal.
Core rod 5: core rod 5 includes cylinder and frustum, is provided with frustum at cylindrical member at one end.Cylinder external diameter 97mm, long 300mm.Core rod top 3 is frustum, frustum upper bottom surface diameter 90mm, and bottom surface diameter 100mm, frustum height 30mm, frustum bottom surface is fixed on cylinder ends.As shown in Fig. 3,4,5.
The spin that movable part 11 adopts diameter to be 4mm.
Movable stud 6: external diameter 198mm, internal diameter 98mm, height 50mm.As shown in Figure 6,7.Being uniformly distributed 4 the first grooves along loose collar 10 inwall circumference, the first recess width is oriented parallel to movable stud 6 short transverse, is provided with 6 movable parts 11 in the first groove.Be circumferentially with the second groove of 1 annular along loose collar 10 inwall, the second groove, between the first groove and recipient base 9, is provided with the first sealing ring 13-1 in the second groove；It is uniformly distributed 4 the 3rd grooves along loose collar 10 outer wall circumference, 3rd recess width is oriented parallel to movable stud 6 short transverse, 3rd groove is provided with 6 movable parts 11, it is circumferentially with 1 the 4th annular groove along loose collar 10 outer wall, 4th groove, between the 3rd groove and recipient base 9, is provided with the second sealing ring 13-2 in the 4th groove.
Core rod 5 is provided with a groove, and limit element 8 is the aluminium bronze silk of diameter 0.5mm, and one end is fixed in the groove of core rod 5 by bolt 21, other end is free end, and stretch out a backward lower turnover of segment distance, stretches in groove after turnover, but do not fix, it is possible to Free Transform, as shown in Figure 5.
Lubricating oil is machine oil.
Room temperature extrudes.
Hydrostatic extrusion hollow profile process is as follows:
Step 1, by limit element 8 activity stud 6 moved to appointment position, in the first cavity 7 that movable stud 6 top, core rod 5 and recipient 4 are formed, add lubricating oil, lubricating oil enters in the rolling member 11 of movable stud 6, play lubrication, and pass through the first sealing ring 13-1 and the second sealing ring 13-2 sealing that are positioned on loose collar 10 sidewall of movable stud 6 so that it is not toward dirty.
Step 2, blank 2 is put into recipient 4 from the entrance of recipient 4 so that it is be positioned at above core rod 5.
Step 3, the second cavity 1 formed between blank 2 top and recipient 4 add lubricating oil, along with the increase of lubricating oil, form pressure, promote blank 2 downward, it is divided in the first cavity 7 through core rod top 3, when forming enough pressure, the lubricating oil promotion activity stud 6 in the first cavity 7 retreats, and extrudes limit element 8, there is elastic deformation in limit element 8, and it being pressed in core rod 5, it is ensured that movable stud 6 retreats, until completing extruding.
Step 4, the hydrostatic extrusion hollow profile taken out from recipient 4.
Embodiment 2
Hydrostatic extrusion prepares 7075 aluminum alloy square tubing, and tubing cross section is rectangle, and side dimension is 300mm × 200mm, wall thickness 10mm.
Recipient 4 cross section is rectangle, and cross section of inboard wall is of a size of 300mm × 200mm.
Blank 2 is cuboid, is of a size of 300mm × 200mm × 100mm.Side's cone that 30mm × 20mm height is 15mm it is of a size of on processing base, center.
Sealing ring 13 is divided into three kinds, it is square RunddichtringO, cross sectional dimensions 10mm × 10mm, wherein the first sealing ring 13-1 outside dimension is 302mm × 206 × 10mm, and the second sealing ring 13-2 outside dimension is 304mm × 208 × 10mm, the 3rd sealing ring 13-3 internal diameter is 300mm × 200mm × 10mm.
Core rod 5: core rod 5 includes two cuboids and side's cone.Wherein the first cuboid dimensions is 180mm × 80mm × 500mm, the second cuboid dimensions 300mm × 200mm × 5mm, and it is 150mm that cone base, side is of a size of 300mm × 200mm height.Second cuboid one end is connected with the first cuboid, and the other end is bored with side and is connected.As shown in Figure 8,9, 10.
Limit element 8 is cast iron hexagonal prism, and four faces along core rod 5 first cuboid outer wall all have a groove, and limit element 8 one end is fixed in the groove of core rod 5 by spring 22, by spring 22 so that limit element 8 is along concave slot sports, as shown in Figure 10.
Movable part 11 is divided into following four, it is diameter 10mm ball including the first rolling member 11-1, second movable part 11-2 is diameter 8mm ball, 3rd rolling member 11-3 is the roller of the long 10mm of diameter 8mm, 4th rolling member 11-4 is the long 20mm needle roller of diameter 4mm, is distributed and shown in position such as Figure 12,13,14.
Second groove external diameter 110mm, width 10mm, degree of depth 4mm, the 4th groove external diameter 200mm, width 20mm, degree of depth 8mm of loose collar 10.
Movable stud 6: side dimension is 298mm × 202mm, inside dimensions 182mm × 82mm, height 46mm, as shown in Figure 11,12,13,14.Along loose collar 10 inwall, every long limit is uniformly distributed 9 the first grooves, is provided with 1 the 4th movable part 11-4 in each first groove, and every minor face is uniformly distributed 3 the first grooves, is provided with 1 the first movable part 11-1 in each first groove.Being additionally provided with 2 annular the second grooves along loose collar 10, the first groove, between above-mentioned two the second groove, is provided with the first sealing ring 13-1 in the second groove；Along loose collar 10 outer wall, every long limit is uniformly distributed 2 the 3rd grooves, is provided with 30 the second movable part 11-2 in the 3rd groove, is provided with 60 the second movable part 11-2 in another the 3rd groove.Along loose collar 10 outer wall, every minor face is provided with 2 the 3rd grooves, is provided with 40 the second movable part 11-2 in the 3rd groove, is provided with a 3rd rolling member 11-3 in another the 3rd groove.Being additionally provided with 1 annular the 4th groove along loose collar 10 outer wall, the 4th groove, between two the 3rd grooves of above-mentioned minor face, is provided with the second sealing ring 13-3 in the 4th groove.As shown in Figure 11,12,13,14.
Lubricating oil is Oleum Ricini.
Blank 2, core rod 5, recipient 4, lubricating oil, movable stud 6 etc. are all preheating to 150 DEG C, then assemble extruding.
Hydrostatic extrusion hollow profile process such as embodiment 1.
Embodiment 3
Hydrostatic extrusion cross section is equilateral pentagonal AZ80 magnesium alloy heterotype tubing, is cut in the circle of radius 50mm, wall thickness 20mm outside the equilateral pentagon in inner side.
Recipient 4 inwall is equilateral pentagon, is cut in outward the circle of radius 50mm.
Blank 2 is equilateral pentagon post, and outside pentagon is inscribed within the circle of radius 50mm, is highly 70mm.
Sealing ring 13 includes the first sealing ring 13-1 and the second sealing ring 13-2, is O RunddichtringO, cross sectional dimensions 20mm × 10mm.Wherein the second sealing ring 13-2 external diameter is 50mm, and the first sealing ring 13-1 external diameter is 36mm.
Core rod 5: core rod 5 includes two equilateral pentagon posts and a base is equilateral pentagonal vertebral body, is wherein cut in the circle of radius 50mm, high 5mm outside the equilateral pentagon of the first equilateral pentagon post；The circle of radius 37.08mm, high 300mm it is cut in outside the equilateral pentagon of the second equilateral pentagon post.Vertebral body height is 120mm, is cut in the circle of radius 50mm outside the equilateral pentagon on base.Second equilateral pentagon post is between the first equilateral pentagon post and vertebral body.As shown in Figure 15,16,17.
It is diameter 10mm ball that rolling member includes the first rolling member 11-1 and the second rolling member 11-2, the first rolling member 11-1, and the second rolling member 11-1 is diameter 8mm ball.
Limit element 8 is for being spring steel plate, all having a groove along five faces of core rod 5 outer wall, limit element 8 one end is fixed in above-mentioned groove by screw 23, and other end is connected by slide block 24 and valve rubber 25, valve rubber 25 is fixed in groove by 502 glue, as shown in figure 17.
Movable stud 6 is equilateral pentagon post, and outside pentagon is inscribed within the circle of radius 49mm, and inner side pentagon is inscribed within the circle of radius 36mm, height 60mm.As shown in Figure 18,19,20.It is uniformly distributed 10 the first grooves along loose collar 10 inwall circumference, first recess width is oriented parallel to movable stud 6 short transverse, first groove is provided with 3 the first movable part 11-1, is additionally provided with 1 annular the second groove along loose collar 10 inwall, the second groove is provided with the first sealing ring 13-1；Being uniformly distributed 10 the 3rd grooves along loose collar 10 outer wall, the 3rd recess width is oriented parallel to movable stud 6 short transverse, is provided with 4 the second movable part 11-2 in each 3rd groove；It is additionally provided with 1 annular the 4th groove along loose collar 10 outer wall circumference, the 4th groove is provided with the second sealing ring 13-2.3rd groove is between the 4th groove and recipient base 9, and the second groove is between the first groove and recipient base 9.
Lubricating oil is machine oil+Oleum Ricini.
Blank 2, core rod 5, recipient 4, lubricating oil, movable stud 6 etc. are all preheating to 400 DEG C, then assemble extruding.
Hydrostatic extrusion hollow profile process such as embodiment 1.
Claims (1)
1. the core rod hydrostatic extrusion hollow profile device with activity stud, including recipient (4), core rod (5), recipient base (9), it is characterized in that: also include movable stud (6) and limit element (8), recipient base (9) is arranged on recipient (4) one end, core rod (5) is arranged in recipient (4), core rod (5) root is fixed on recipient base (9) center, the sidewall of core rod (5) is provided with limit element (8), movable stud (6) is enclosed within core rod (5) outer wall, and it is positioned at limit element (8) top, for supporting movable stud (6), and restraint stud (6) is movable, the inwall of movable stud (6) is along the side walls of core rod (5), the outer wall of movable stud (6) slides along the inwall of recipient (4)；
Above-mentioned movable stud (6) includes loose collar (10), movable part (11) and sealing ring (13), loose collar (10) is enclosed within core rod (5) outer wall, it is circumferentially with P the first groove along loose collar (10) inwall, P >=1, first groove is provided with N number of movable part (11), N >=1, it is additionally provided with Q annular second groove along loose collar (10) inwall circumference, the second groove is provided with sealing ring (13)；It is circumferentially with K the 3rd groove along loose collar (10) outer wall, K >=1,3rd groove is provided with M movable part (11), M >=1, it is additionally provided with L annular the 4th groove along loose collar (10) outer wall circumference, L >=1, is provided with sealing ring (13) in the 4th groove；
Have at least between second groove and core rod (5) root and there is no the first groove；Have at least between one article of the 4th groove and core rod (5) root and there is no the 3rd groove；
Above-mentioned movable part (11) is ball, roller or needle roller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510019636.5A CN104511514B (en) | 2015-01-14 | 2015-01-14 | A kind of core rod hydrostatic extrusion hollow profile device with activity stud |
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| CN201510019636.5A CN104511514B (en) | 2015-01-14 | 2015-01-14 | A kind of core rod hydrostatic extrusion hollow profile device with activity stud |
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| CN104511514B true CN104511514B (en) | 2016-07-06 |
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| CN106734300A (en) * | 2016-11-10 | 2017-05-31 | 无锡市明盛强力风机有限公司 | A kind of magnesium alloy pipe hydrostatic extrusion forming technology |
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| US3390563A (en) * | 1965-12-09 | 1968-07-02 | Western Electric Co | Concentric band high pressure forming chambers |
| CN1308096C (en) * | 2004-04-12 | 2007-04-04 | 北京有色金属研究总院 | Method for processing lump non-crystal alloy blank and its device used thereof |
| CN101279331B (en) * | 2008-05-05 | 2012-05-23 | 西安理工大学 | Wire hydrostatic extrusion device and method for extruding superfine grain wire using the device |
| PL399967A1 (en) * | 2012-07-13 | 2014-01-20 | Instytut Wysokich Cisnien Polskiej Akademii Nauk | A method of producing high strength rods and rods of such steel from austenitic steel |
| CN104070078A (en) * | 2013-03-29 | 2014-10-01 | 南京理工大学 | Ultrahigh-pressure hydrostatic extrusion forming technology of magnesium alloy pipe and extrusion mold |
| CN204486536U (en) * | 2015-01-14 | 2015-07-22 | 南京理工大学 | The hydrostatic extrusion hollow profile device of the movable stud of a kind of core rod band |
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