CN105889744B - A kind of spinning flange ring and its forming technology - Google Patents

A kind of spinning flange ring and its forming technology Download PDF

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Publication number
CN105889744B
CN105889744B CN201610398334.8A CN201610398334A CN105889744B CN 105889744 B CN105889744 B CN 105889744B CN 201610398334 A CN201610398334 A CN 201610398334A CN 105889744 B CN105889744 B CN 105889744B
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Prior art keywords
spinning
flange ring
preforming
finished
spinning roller
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CN105889744A (en
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金崇利
刘成贵
潘兆星
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Dongxing Auto Parts Co
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Dongxing Auto Parts Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16SCONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S5/00Other constructional members not restricted to an application fully provided for in a single class
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14Spinning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02GHOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02Profiting from waste heat of exhaust gases
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The invention belongs to the technical fields of auto parts machinery, and in particular to a kind of spinning flange ring and its forming technology.Spinning flange ring, including flange ring body and central bore, the flange ring body inner wall are groove structure, and the annular solid of the smooth protrusion of outer wall is around central bore.It is made using the following steps:(1)Blanking;(2)Punching;(3)Press gradient;(4)Rotary press modelling;(5)Punching;(6)Boring;(7)Turning and brill aperture.The spinning process manufacturing flange ring of the present invention, is first anticipated the shape of blank, depresses the partial outer edge of blank, positioned using centre bore, be not in slight crack, fold in spinning process;Use this spinning process, the plastic property of product preferable simultaneously so that its longer life expectancy.

Description

A kind of spinning flange ring and its forming technology
Technical field
The invention belongs to the technical fields of auto parts machinery, and in particular to a kind of spinning flange ring and its forming technology.
Background technology
Since the nineties in last century, the development of automobile industry also results in huge while offering convenience to human lives Big energy consumption and environmental pollution.Studies have shown that motor vehicle fuel burns in engine, discharged energy only has 30% or so It is used effectively, complementary energy is dissipated or is discharged into air in a manner of thermal energy or gas kinetic energy, causes great energy wave Take, while also environment is adversely affected.With comprehensive the implementing of 2025 strategy of made in China, environmentally friendly vehicle industry obtains It pays high attention to and fast-developing.Therefore, automobile waste heat is recycled, is advantageously implemented the energy-saving and emission-reduction of automobile.
Flange ring is part in energy of automobile exhaust reuse means, is used for automobile tail gas utilizing device currently on the market Flange ring, it is desirable that Product Precision it is high and surface quality is very stringent, production mainly using forging, the side such as cast and roll Method must just cut one integral piece steel ingot with forging method production flange ring and forge, and need to carry out multiple heats forged, wave Take material and the energy, product quality is relatively low, and pollution is also serious;It is limited by flange ring size, production rolls flange ring and needs difference Specification costliness rolls equipment, and equipment investment is still very big, and serious, leveling difficulty is distorted roll in addition after, it is also necessary to cleared up, Processes, the waste of manpower such as bevel and welding increase production cost, while production efficiency is also low, easy tos produce weld defect; It needs to do sand mo(u)ld with mach method production flange ring after casting, melt metal, casting, and easy to produce trachoma and stomata is same When with shrinkage porosite, crackle, slag inclusion the defects of, since intensity is low, get rusty easily in use, use scope is restricted greatly, increase Cost input is added.Therefore existing market, which is badly in need of one kind, can ensure the quality of production, improve the flange ring production of stock utilization Structure and production method.
Invention content
The purpose of the present invention is to provide a kind of saving material, the spinning process for reducing production cost while improving architecture quality Lan Huan.The present invention also aims to provide a kind of spinning flange loop forming technique.
The object of the present invention is achieved like this:
A kind of spinning flange ring, including flange ring body and central bore, the flange ring body inner wall are groove structure, outside The annular solid of the smooth protrusion of wall is around central bore.
The tangent line of the outer wall outermost end end face of the flange ring body is parallel to central bore axis.
The outer wall of the flange ring body is equipped with flat aperture.
The top end face of the flange ring body is parallel with the tangent line of outer wall outermost end end face.The lower end of the flange ring body There is the lower edge parallel with the tangent line of outer wall outermost end end face.
The spinning flange ring is made using the following steps:
(1)Blanking:Blanking die is installed on punching machine, circular precut blanks are obtained after stainless-steel sheet is punched;
(2)Punching:Punching die is installed on punching machine, central bore is punched out at precut blanks center;
(3)Press gradient:Installation pressure gradient mold on a hydraulic press, precut blanks outer edge part is molded, and is obtained in circle The first-stage semi-finished product of taper type;
(4)Rotary press modelling:The preforming spinning roller 44 of each self installation, preforming two rotation on three spinning roller stations on spinning machine Wheel 43 and molding spinning roller 42, are rotated by the main shaft of spinning machine, drive first-stage semi-finished product rotation, allow the work of a preforming spinning roller 44 Make face and carry out contact squeeze with the external taper face 31 of first-stage semi-finished product from outside to inside, extruding process reaches threshold value A backed off after random, obtains First time spinning blank;Allow preforming two spinning roller 43 working face from outside to inside with the external taper face 31 of first time spinning blank into Row contact squeeze, extruding process reach threshold value A backed off after random, obtain second of spinning blank;Allow molding spinning roller 42 working face by Outer to carry out contact squeeze to the interior external taper face 31 with second of spinning blank, extruding process reaches threshold value A backed off after random, is revolved Press semi-finished product;
(5)Punching:Punching die is installed on punching machine, spinning semi-finished product are punched to obtain the central bore with normal diameter Semi-finished product;
(6)Boring:Excircle machining inner headed face is clamped in numerically controlled lathe;
(7)Turning and brill aperture:In numerically controlled lathe clamping endoporus turning face;It is small with drill bit processing on periphery Hole.
A kind of spinning flange loop forming technique, includes the following steps:
(1)Blanking:Blanking die is installed on punching machine, circular precut blanks are obtained after stainless-steel sheet is punched;
(2)Punching:Punching die is installed on punching machine, central bore is punched out at precut blanks center;
(3)Press gradient:Installation pressure gradient mold on a hydraulic press, precut blanks outer edge part is molded, and is obtained in circle The first-stage semi-finished product of taper type;
(4)Rotary press modelling:The preforming spinning roller 44 of each self installation, preforming two rotation on three spinning roller stations on spinning machine Wheel 43 and molding spinning roller 42, are rotated by the main shaft of spinning machine, drive first-stage semi-finished product rotation, allow the work of a preforming spinning roller 44 Make face and carry out contact squeeze with the external taper face 31 of first-stage semi-finished product from outside to inside, extruding process reaches threshold value A backed off after random, obtains First time spinning blank;Allow preforming two spinning roller 43 working face from outside to inside with the external taper face 31 of first time spinning blank into Row contact squeeze, extruding process reach threshold value A backed off after random, obtain second of spinning blank;Allow molding spinning roller 42 working face by Outer to carry out contact squeeze to the interior external taper face 31 with second of spinning blank, extruding process reaches threshold value A backed off after random, is revolved Press semi-finished product;
(5)Punching:Punching die is installed on punching machine, spinning semi-finished product are punched to obtain the central bore with normal diameter Semi-finished product;
(6)Boring:Excircle machining inner headed face is clamped in numerically controlled lathe;
(7)Turning and brill aperture:In numerically controlled lathe clamping endoporus turning face;It is small with drill bit processing on periphery Hole.
A preforming spinning roller is spherical surface spinning roller, shapes the first time spinning blank for outer rim of prewhirling with spherical surface; Preforming two spinning roller uses the consistent but correspondingly-sized with the outer profile designed by flange ring to be more than designed by flange ring The undergauge spinning roller of outer profile 1-10mm shapes second of spinning blank more than the size 1-10mm designed by flange ring;Institute The molding spinning roller stated uses the spinning roller consistent with the outer profile size designed by flange ring.
The angular speed and the relationship of the speed of preforming spinning roller process of the described first-stage semi-finished product rotation is:
, 350rpm >=w>=250rpm, v unit are mm/s;
The angular speed and the relationship of the speed of preforming two spinning rollers process of the described first time spinning blank rotation is:
, 350rpm >=w>=270rpm, v unit are mm/s;
The angular speed and the relationship for the speed for being molded spinning roller process of described second of spinning blank rotation is:
,350rpm≥w>=300rpm, v unit are mm/s;
The beneficial effects of the present invention are:The spinning process manufacturing flange ring of the present invention, first does the shape of blank It anticipates, depresses the partial outer edge of blank, positioned using centre bore, be not in slight crack, fold in spinning process;Together This spinning process of Shi Caiyong, the plastic property of product are preferable so that its longer life expectancy.The structure that this spinning process produces is light Ingeniously, surface quality is good, and the mechanical performance of finished parts is significantly improved, after subsequent machining, the size energy of product Degree of precision is obtained, the appearance requirement of product can be met.
Description of the drawings
Fig. 1 is the spinning forming process blanking step of the present invention(1)Schematic diagram;
Fig. 2 is the spinning forming process punching step of the present invention(2)Schematic diagram;
Fig. 3 is the spinning forming process pressure gradient step of the present invention(3)Schematic diagram;
Fig. 4 is the spinning forming process flow-forming step of the present invention(4)Schematic diagram;
Fig. 5 is the spinning forming process punching step of the present invention(5)Schematic diagram;
Fig. 6 is the spinning forming process boring step of the present invention(6)Schematic diagram;
Fig. 7 is the spinning forming process turning and brill aperture step of the present invention(7)Schematic diagram;
Fig. 8 is 1 data simulation figure of the embodiment of the present invention;
Fig. 9 is 2 data simulation figure of the embodiment of the present invention;
Figure 10 is 3 data simulation figure of the embodiment of the present invention.
Specific implementation mode
The present invention is described further below in conjunction with the accompanying drawings.
1- blanks in figure, 21- blanks center mesoporous, 22- blank outer rims, 31- external tapers face, 41- moulding sections, 42- at Type spinning roller, preforming two spinning rollers of 43-, the preforming spinning rollers of 44-, the conical surfaces of the 61- without any open defect, 71- peripheries, 72- Flat aperture.
The present invention relates to a kind of spinning flange ring, including flange ring body and central bore, the flange ring body inner wall is Groove structure, the annular solid of the smooth protrusion of outer wall is around central bore.It cuts the outer wall outermost end end face of the flange ring body Line is parallel to central bore axis.The outer wall of the flange ring body is equipped with flat aperture.The top of the flange ring body Face is parallel with the tangent line of outer wall outermost end end face.The lower end of the flange ring body has parallel with the tangent line of outer wall outermost end end face Lower edge.
The present invention relates to a kind of forming technologies of spinning flange ring.A kind of spinning flange loop forming technique, including following step Suddenly:1 blanking;2 punchings;3 pressure gradients;4 spinning;5 punchings;6 borings;7 turnings and brill aperture;The center of the blank Using Internal hole positioning.The flange ring spinning forming process of the present invention, first anticipates the shape of blank, using endoporus Centering, is not in slight crack, fold in spinning process.This spinning process, the longevity of the flange ring after Plastic Forming are used simultaneously It orders longer.This spinning process production flange ring structure is light and handy, and surface texture densification wearability is good, and the mechanical performance of finished parts can obtain It is improved to apparent.
Wherein, specific steps include:
Blanking:Blanking die is installed on punching machine.Precut blanks are obtained after punching.Stainless-steel sheet is selected to make.
Punching:Punching die is installed on punching machine.Blank band central bore after punching.
Press gradient:Installation pressure gradient mold, blank outer edge part is molded on 1000KN hydraulic presses, obtains level-one half Finished product;The workpiece periphery is cone;
Rotary press modelling:A preforming spinning roller, preforming two spinning roller and molding spinning roller are installed on spinning machine, make preforming one The working face of spinning roller, is successively in contact with the preformed sections of the first-stage semi-finished product at the working face for being molded spinning roller respectively, spinning The main shaft of machine rotates, and drives core model mold and first-stage semi-finished product rotation, by the rotation of preforming spinning roller and horizontal movement will in advance at Type part spinning, and then preforming two spinning roller and the rotation of molding spinning roller successively simultaneously revolve a preforming part to horizontal movement Pressure, forms final moulding section, obtains spinning semi-finished product;
Punching:Punching die is installed on punching machine.The semi-finished product with big central bore are obtained after punching.
Boring:In numerically controlled lathe clamping Excircle machining inner headed face and local periphery, to ensure the position degree of inner cavity surface;
Turning and brill aperture:Periphery of the endoporus vehicle with angle is clamped in numerically controlled lathe;Later small with drill bit processing Hole.
The working face of the molding spinning roller is combinatorial surface at an angle to each other, first from large to small again after straight one section by small change Greatly, last big straight periphery;
The central axis of center line and the molding spinning roller on the working face of the molding spinning roller is perpendicular;
The working face of preforming two spinning roller is similar with the molding working face of spinning roller, and difference is just in the water on angled inclined-plane Flat distance is slightly short;
The working face of a preforming spinning roller is the periphery of big arc connection;
There cannot be any open defect on the periphery and taper face of the flange ring.
The position of the aperture is flat on periphery.
The working face of the molding spinning roller is combinatorial surface at an angle to each other, first from large to small again after straight one section by small change Greatly, last big straight periphery.
In spinning roller spinning process, with the horizontal feed of spinning roller, semi-finished product are along between spinning roller and upper/lower die Gap has from outside to inside to flow and fills up gap location from inside to outside, forms moulding section.
The centre position of the blank uses Internal hole positioning.
As shown in Fig. 1,1 is circular steel plate blank, and as shown in Fig. 2 21 be the central bore of blank, is pressed 22 Gradient, in order to which material can preferably flow, the processing carried out in advance obtains attached shape shown in Fig. 3.
Using Internal hole positioning, the defects of in spinning process being not in slight crack, fold.Cored mould mold on spinning machine, It will press the first-stage semi-finished product that gradient obtains on core model mold, each self installation is preforming on three spinning roller stations on spinning machine One spinning roller 44, preforming two spinning roller 43 and molding spinning roller 42.;As shown in Fig. 4, it is rotated by the main shaft of spinning machine, drives core Mould mold and first-stage semi-finished product rotation, allow the working face of a preforming spinning roller 44 and external taper face 31 to the outer court of first-stage semi-finished product Interior carry out contact squeeze, while squeezing abundant backed off after random, preforming two spinning roller 43 rotates semi-finished product by certain speed And horizontal movement squeezes, similarly, the molding work of spinning roller 42, which finishes, to be exited, and spinning semi-finished product 41 are obtained.
As shown in Fig. 5, big endoporus is punched out on punching machine.
As shown in Fig. 6, inner headed face and local periphery are processed on numerically controlled lathe, it is desirable that the cone without any open defect Face 61.
As shown in Fig. 7, processing excircles face 71 and flat aperture 72 is bored on numerically controlled lathe.
The working face of the molding spinning roller 42 is combinatorial surface at an angle to each other, first from large to small again after straight one section by small change Greatly, last big straight periphery;
The central axis of center line and the molding spinning roller 42 on the working face of the molding spinning roller 42 is perpendicular;
The working face of preforming two spinning roller 43 is similar with the molding working face of spinning roller 42, distinguishes just in the face of angle Horizontal distance is slightly short;
The working face of a preforming spinning roller 44 is the periphery of big arc.
Embodiment 1,
As shown in figure 8, the step is same as described above, difference lies in the angle speed of first-stage semi-finished product rotation It spends and is with the relationship of the speed of preforming spinning roller process:
, 350rpm >=w>=250rpm, v unit are mm/s;
By the way that studies have shown that when stainless steel blank rotates, the quality and angular velocity of rotation of spinning are fast with mold process The cooperation of degree is related, and when rotary speed is relatively low, such as 250rpm, mold schedule speed is just unsuitable excessively high, because of schedule speed mistake Height, rotary speed is too low, when spinning be easy to make blank radially generate it is excessive pull power, cause on blank retaining part with Occurring subtle fold of pullling on into film position, this fold should not visually be found under normal conditions, but when in use, go out The position of existing fold no matter in toughness with normal value is below in hardness, influence workpiece quality.If rotary speed mistake simultaneously Height, too low can also be generated to die workpiece of mold schedule speed are pullled, and workpiece, while if rotating speed can be also pulled apart under extreme condition Not in place with mold cooperation, motor there is also idle running phenomenon during process, consume electric energy.By repetition test, to adopting The data of collection are fitted and emulate, inventor has found equalization point in the case of above formula, in the case work piece production Quality highest, that is, workpiece is minimum by the destruction of power is pullled when producing, while the energy consumption of motor is minimum.Final inventor is true Module production quality is best when settled blank rotating speed is 300rpm.
Embodiment 2
As shown in figure 9, the step is same as Example 1, difference lies in the angle speed of first time spinning blank rotation It spends and is with the relationship of the speed of preforming two spinning rollers process:
, 350rpm >=w>=270rpm, v unit are mm/s;
Principle is similar to Example 1, and difference lies in after the process of first time spinning, the edge of work is trimmed For hemisphere annular, since workpiece is not directly by the position of hard force, the stress-bearing capability of first time spinning blank is obviously strong It can be significantly improved in the rotating speed of first-stage semi-finished product, blank, when rotating speed is same, as 300rpm, module production quality is best.
Embodiment 3
As shown in Figure 10, the step is same as Example 3, difference lies in,
The angular speed and the relationship for the speed for being molded spinning roller process of described second of spinning blank rotation is:
,350rpm≥w>=300rpm, v unit are mm/s;
With the final molding of blank, stress-bearing capability reaches peak, that is, carry out final molding when rotating speed and mold into Cheng Sudu can be directed toward maximum value, when rotating speed reaches 350rpm, can make the spinning semi-finished product of best in quality of the present invention, The parts surface smoothness highest, stress-bearing capability is most strong, and plastic property is best.

Claims (6)

1. a kind of spinning flange ring, including flange ring body and central bore, it is characterised in that:The flange ring body inner wall is recessed Slot structure, the annular solid of the smooth protrusion of outer wall is around central bore;
The spinning flange ring is made using the following steps:
(1)Blanking:Blanking die is installed on punching machine, circular precut blanks are obtained after stainless-steel sheet is punched;
(2)Punching:Punching die is installed on punching machine, central bore is punched out at precut blanks center;
(3)Press gradient:Installation pressure gradient mold on a hydraulic press, precut blanks outer edge part is molded, and obtains being in the frustum of a cone The first-stage semi-finished product of shape;
(4)Rotary press modelling:Each preforming spinning roller of self installation on three spinning roller stations on spinning machine( 44), it is preforming two rotation Wheel( 43)With molding spinning roller( 42), rotated by the main shaft of spinning machine, drive first-stage semi-finished product rotation, allow preforming one to revolve Wheel( 44)Working face from outside to inside with the external taper face of first-stage semi-finished product( 31)Contact squeeze is carried out, extruding process reaches Threshold value A backed off after random obtains first time spinning blank;Allow preforming two spinning roller( 43)Working face from outside to inside with first time revolve The external taper face of green compact material( 31)Contact squeeze is carried out, extruding process reaches threshold value A backed off after random, obtains second of spinning base Material;It allows and is molded spinning roller( 42)The working face external taper face with second of spinning blank from outside to inside( 31)Contact is carried out to squeeze Pressure, extruding process reach threshold value A backed off after random, obtain spinning semi-finished product;
(5)Punching:Punching die is installed on punching machine, spinning semi-finished product are punched to obtain half of the central bore with normal diameter Finished product;
(6)Boring:Excircle machining inner headed face is clamped in numerically controlled lathe;
(7)Turning and brill aperture:In numerically controlled lathe clamping endoporus turning face;Drill bit machining small is used on periphery;
The angular speed and the relationship of the speed of preforming spinning roller process of the described first-stage semi-finished product rotation is:
, 350rpm >=w>=250rpm, v unit are mm/s;
The angular speed and the relationship of the speed of preforming two spinning rollers process of the described first time spinning blank rotation is:
, 350rpm >=w>=270rpm, v unit are mm/s;
The angular speed and the relationship for the speed for being molded spinning roller process of described second of spinning blank rotation is:
,350rpm≥w>=300rpm, v unit are mm/s.
2. a kind of spinning flange ring according to claim 1, it is characterised in that:The outer wall outermost end of the flange ring body The tangent line of end face is parallel to central bore axis.
3. a kind of spinning flange ring according to claim 1, it is characterised in that:The outer wall of the flange ring body is equipped with Flat aperture.
4. a kind of spinning flange ring according to claim 1, it is characterised in that:The top end face of the flange ring body with it is outer The tangent line of wall outermost end end face is parallel;The lower end of the flange ring body have it is parallel with the tangent line of outer wall outermost end end face under Edge.
5. a kind of spinning flange loop forming technique, it is characterised in that:Include the following steps:
(1)Blanking:Blanking die is installed on punching machine, circular precut blanks are obtained after stainless-steel sheet is punched;
(2)Punching:Punching die is installed on punching machine, central bore is punched out at precut blanks center;
(3)Press gradient:Installation pressure gradient mold on a hydraulic press, precut blanks outer edge part is molded, and obtains being in the frustum of a cone The first-stage semi-finished product of shape;
(4)Rotary press modelling:Each preforming spinning roller of self installation on three spinning roller stations on spinning machine( 44), it is preforming two rotation Wheel( 43)With molding spinning roller( 42), rotated by the main shaft of spinning machine, drive first-stage semi-finished product rotation, allow preforming one to revolve Wheel( 44)Working face from outside to inside with the external taper face of first-stage semi-finished product( 31)Contact squeeze is carried out, extruding process reaches Threshold value A backed off after random obtains first time spinning blank;Allow preforming two spinning roller( 43)Working face from outside to inside with first time revolve The external taper face of green compact material( 31)Contact squeeze is carried out, extruding process reaches threshold value A backed off after random, obtains second of spinning base Material;It allows and is molded spinning roller( 42)The working face external taper face with second of spinning blank from outside to inside( 31)Contact is carried out to squeeze Pressure, extruding process reach threshold value A backed off after random, obtain spinning semi-finished product;
(5)Punching:Punching die is installed on punching machine, spinning semi-finished product are punched to obtain half of the central bore with normal diameter Finished product;
(6)Boring:Excircle machining inner headed face is clamped in numerically controlled lathe;
(7)Turning and brill aperture:In numerically controlled lathe clamping endoporus turning face;Drill bit machining small is used on periphery;
The angular speed and the relationship of the speed of preforming spinning roller process of the described first-stage semi-finished product rotation is:
, 350rpm >=w>=250rpm, v unit are mm/s;
The angular speed and the relationship of the speed of preforming two spinning rollers process of the described first time spinning blank rotation is:
, 350rpm >=w>=270rpm, v unit are mm/s;
The angular speed and the relationship for the speed for being molded spinning roller process of described second of spinning blank rotation is:
,350rpm≥w>=300rpm, v unit are mm/s.
6. a kind of spinning flange loop forming technique according to claim 5, it is characterised in that:A preforming spinning roller For spherical surface spinning roller, the first time spinning blank for outer rim of prewhirling with spherical surface is shaped;Preforming two spinning roller uses and method Outer profile designed by Lan Huan is consistent but correspondingly-sized is more than the undergauge spinning roller of the outer profile 1-10mm designed by flange ring, forming Go out second of spinning blank for being more than the size 1-10mm designed by flange ring;The molding spinning roller use with set by flange ring The consistent spinning roller of the outer profile size of meter.
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