CN104972056A - Automobile hub flange closing die forging technology - Google Patents
Automobile hub flange closing die forging technology Download PDFInfo
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- CN104972056A CN104972056A CN201510408365.2A CN201510408365A CN104972056A CN 104972056 A CN104972056 A CN 104972056A CN 201510408365 A CN201510408365 A CN 201510408365A CN 104972056 A CN104972056 A CN 104972056A
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- module
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- die forging
- ring flange
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Abstract
The invention discloses an automobile hub flange closing die forging technology. A PV array module is connected with an improved MPPT control module through an input voltage module and an input current module. The improved MPPT control module is connected with a high-frequency BOOST module through PWM. The PV array module can also be directly connected with the high-frequency BOOST module. The other end of the high-frequency BOOST module is connected with a high-low frequency control full bridge inversion module. The high-frequency BOOST module is connected with a parameter self-tuning dead beat control module and a PI constant-voltage control module through U_bus. A unit sinusoidal signal module is connected with the parameter self-tuning dead beat control module. The high-low frequency control full bridge inversion module is connected with a power grid module. The power grid module is connected with a software phase-locked loop. The automobile hub flange closing die forging technology has the advantages that the production efficiency is high, materials are saved, and meanwhile a large number of resources can be saved for the nation.
Description
Technical field
The present invention relates to mechanical equipment technical field, especially relate to a kind of automotive hub ring flange closed die forging process.
Background technology
Automotive hub ring flange is important spare part in automobile, most important for vehicle safety, therefore has strict requirement to the material of blank and mechanical performance.Due to wheelboss flange dish, foot is elongated, and the relative foot of external diameter of dish portion is comparatively large, and centre bore is less simultaneously, so forging difficulty is higher, formed precision is poor, and allowance tolerance is larger.China's existing wheelboss flange dish Forging Technology generally adopts open die forging, impressing forging technique, and production efficiency is low, and production technology is long, and production precision is low, and waste of material is large.Because existing technique generally needs pneumatic hammer first to carry out making base, production efficiency is low, and technique is long, and blank uniformity is poor, and two procedure forging temperatures are unstable, cause two road shaped article tolerances shorter for larger die life.Meanwhile, owing to being open die forging, impressing forging, the existence of overlap causes a large amount of wastes of material, the trimming operation simultaneously increased, and then causes adverse effect to follow-up accurately machined clamping, causes final finished yields decline production efficiency low.Existing technique center sky does not carry out shaping in forging, holed by later process drilling machine, waste time and energy, add the waste of material again, improve the production cost of later process, reduce accurately machined production efficiency, and due to bore process destructive power metal streamline, adverse effect is caused to product strength.
Summary of the invention
For overcoming the problems referred to above, the present invention adopts following technical scheme:
A kind of automotive hub ring flange closed die forging process, is characterized in that, comprise the steps:
(1) bar is cut off: calculate billet weight needed for product by computer software, selects the bar of appropriate size, is sheared by the sheared blank equipment of specialty;
(2) blank heating: blank is heated by Medium Frequency Induction Heating Furnace, overrun by sorting unit automatic rejection; (3) one jumping-up: the blank heated is put into one bed die, start punching machine, carry out jumping-up to blank the first half and finished disk portion, because punching machine has the characteristic of bottom dead centre, every part blank can jumping-up to consistent specified degree;
(4) shaping: one shaping blank is put among two road bed dies, start punching machine to become, both sides fit clearance 0.2mm, coordinated the concentricity of the centre bore ensured after formed product within 1mm by upper/lower die, shaping complete after, centre bore stays about 10mm gross weight, is directly removed by rear road punching technology;
(5) cool: shaping complete after, the cooling that enough time carries out mould need be reserved, especially note, to the cooling of two road molds, then spraying high efficient demoulding agent to mould by special equipment, especially note the spraying to two road molds.
Billet weight control errors is within ± 20g in described step (1).
In described step (2), heating and temperature control is at 1000 DEG C-1100 DEG C.
In described step (4), two road mold I positions enter two road bed die II position 10mm.
In described step (4), the gap of two road mold I and two road bed dies II is 0.2mm.
In described step (4), two road bed dies are provided with the little margin of movable part, are furnished with liftout attachment below, and ejecting product after shaping completing facilitates product to take out.
Advantage of the present invention is: have dynamic property good, and control procedure is without the feature of overshoot.Because it has transient response quickly, be therefore highly suitable for the control of the photovoltaic generating system inverter being subject to the impact of outside changeable environment.
Detailed description of the invention
A kind of automotive hub ring flange closed die forging process, specifications of raw materials is selected: the technical program former material specification is determined by required shaping wheel hub ring flange foot size, dish portion is then by technique multistep moldings such as jumping-ups, wheelboss flange dish forging precision can be improved, avoid the uncertainty of pneumatic hammer in open die forging process.
Blanking controls: this technique, by using the equipment such as high-precision bar shears or circular saw, coordinates strict quality management and control system, by the billet weight control errors of about 4Kg within 20g, ensures that subsequent forming technique does not have overlap or fillet produces.Computer heating control: the medium-frequency induction furnace that this process choice has sorting unit heats, sorting unit ensure that the stability of heating-up temperature, avoids the generation of burning product; 1, according to the specification of blank, suitable inductor is selected; 2, according to voltage and the cylinder pusher beat parameter of the weight determination middle frequency furnace of actual production rhythm and blank; Qualified products temperature range parameter upper limit is set 1150 DEG C by 3, lower limit set 1100 DEG C.
Jumping-up: upset forging process is the key in this technique, because forging contracting is larger, overall jumping-up is wayward, and be unfavorable for that product foot is shaping, so this technique takes the method for branch's jumping-up, by the analysis to final products, the foot of wheelboss flange dish and dish portion are carried out weight decomposition, in upsetting process, retain foot by one bed die, only suitable jumping-up is carried out to dish portion.One lower mould put into by qualified blank Medium Frequency Induction Heating Furnace heated, and starting pressure machine completes jumping-up.
Shaping: to carry out shaping by the little drift of two road molds to centre bore.To the cooling of mold and the spraying of releasing agent most important, shaping complete after, centre bore stays about 10mm gross weight, is removed by rear road punching technology.The semi-finished product one jumping-up completed put into two road counterdies, and starting pressure machine completes moulding process.Finished product is put into perforating die and washes away gross weight, cooling and lubricating is carried out to each mould simultaneously.
Claims (6)
1. an automotive hub ring flange closed die forging process, is characterized in that, comprise the steps:
(1) bar is cut off: calculate billet weight needed for product by computer software, selects the bar of appropriate size, is sheared by the sheared blank equipment of specialty;
(2) blank heating: blank is heated by Medium Frequency Induction Heating Furnace, overrun by sorting unit automatic rejection; (3) one jumping-up: the blank heated is put into one bed die, start punching machine, carry out jumping-up to blank the first half and finished disk portion, because punching machine has the characteristic of bottom dead centre, every part blank can jumping-up to consistent specified degree;
(4) shaping: one shaping blank is put among two road bed dies, start punching machine to become, both sides fit clearance 0.2mm, coordinated the concentricity of the centre bore ensured after formed product within 1mm by upper/lower die, shaping complete after, centre bore stays about 10mm gross weight, is directly removed by rear road punching technology;
(5) cool: shaping complete after, the cooling that enough time carries out mould need be reserved, especially note, to the cooling of two road molds, then spraying high efficient demoulding agent to mould by special equipment, especially note the spraying to two road molds.
2. a kind of automotive hub ring flange of one according to claim 1 closed die forging process, is characterized in that: billet weight control errors is within ± 20g in described step (1).
3. a kind of automotive hub ring flange of one according to claim 1 closed die forging process, is characterized in that: in described step (2), heating and temperature control is at 1000 DEG C-1100 DEG C.
4. a kind of automotive hub ring flange of one according to claim 1 closed die forging process, is characterized in that: in described step (4), two road mold I positions enter two road bed die II position 10mm.
5. a kind of automotive hub ring flange of one according to claim 4 closed die forging process, is characterized in that: in described step (4), the gap of two road mold I and two road bed dies II is 0.2mm.
6. a kind of automotive hub ring flange of one according to claim 1 closed die forging process, is characterized in that: in described step (4), two road bed dies are provided with the little margin of movable part, are furnished with liftout attachment below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408365.2A CN104972056A (en) | 2015-07-14 | 2015-07-14 | Automobile hub flange closing die forging technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510408365.2A CN104972056A (en) | 2015-07-14 | 2015-07-14 | Automobile hub flange closing die forging technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104972056A true CN104972056A (en) | 2015-10-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510408365.2A Pending CN104972056A (en) | 2015-07-14 | 2015-07-14 | Automobile hub flange closing die forging technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN104972056A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694790A (en) * | 2016-12-31 | 2017-05-24 | 重庆市合川区通用汽车配件制造厂 | Flange die-forging technology |
| CN108145049A (en) * | 2017-11-14 | 2018-06-12 | 杭州万鼎实业有限公司 | Automotive hub flange proceeding closed fine die forging method |
| CN110614340A (en) * | 2019-04-29 | 2019-12-27 | 金雷科技股份公司 | Double-flange die forging method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180627A (en) * | 2003-12-22 | 2005-07-07 | Nsk Ltd | Raceway ring for bearing unit for supporting wheel, its manufacturing method, and bearing unit for supporting wheel |
| CN1849461A (en) * | 2003-09-10 | 2006-10-18 | Ntn株式会社 | Bearing device for wheel |
| JP2008128256A (en) * | 2006-11-16 | 2008-06-05 | Nsk Ltd | Method of manufacturing bearing ring member |
| JP2008173661A (en) * | 2007-01-17 | 2008-07-31 | Ntn Corp | Die device for manufacturing hub ring, and method for manufacturing hub ring |
| JP2008212991A (en) * | 2007-03-05 | 2008-09-18 | Ntn Corp | Method for manufacturing flange structure |
| US20090252447A1 (en) * | 2006-12-20 | 2009-10-08 | Ntn Corporation | Hub Wheel Of A Wheel Bearing Apparatus And A Manufacturing Method Thereof |
-
2015
- 2015-07-14 CN CN201510408365.2A patent/CN104972056A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849461A (en) * | 2003-09-10 | 2006-10-18 | Ntn株式会社 | Bearing device for wheel |
| JP2005180627A (en) * | 2003-12-22 | 2005-07-07 | Nsk Ltd | Raceway ring for bearing unit for supporting wheel, its manufacturing method, and bearing unit for supporting wheel |
| JP2008128256A (en) * | 2006-11-16 | 2008-06-05 | Nsk Ltd | Method of manufacturing bearing ring member |
| US20090252447A1 (en) * | 2006-12-20 | 2009-10-08 | Ntn Corporation | Hub Wheel Of A Wheel Bearing Apparatus And A Manufacturing Method Thereof |
| JP2008173661A (en) * | 2007-01-17 | 2008-07-31 | Ntn Corp | Die device for manufacturing hub ring, and method for manufacturing hub ring |
| JP2008212991A (en) * | 2007-03-05 | 2008-09-18 | Ntn Corp | Method for manufacturing flange structure |
Non-Patent Citations (1)
| Title |
|---|
| 中国机械工程学会塑性工程学会: "《锻压手册.第1卷，锻造》", 30 November 2013, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694790A (en) * | 2016-12-31 | 2017-05-24 | 重庆市合川区通用汽车配件制造厂 | Flange die-forging technology |
| CN108145049A (en) * | 2017-11-14 | 2018-06-12 | 杭州万鼎实业有限公司 | Automotive hub flange proceeding closed fine die forging method |
| CN110614340A (en) * | 2019-04-29 | 2019-12-27 | 金雷科技股份公司 | Double-flange die forging method |
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Application publication date: 20151014 |