CN104525816B - A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique - Google Patents
A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique Download PDFInfo
- Publication number
- CN104525816B CN104525816B CN201410734907.0A CN201410734907A CN104525816B CN 104525816 B CN104525816 B CN 104525816B CN 201410734907 A CN201410734907 A CN 201410734907A CN 104525816 B CN104525816 B CN 104525816B
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- Prior art keywords
- core rod
- seam
- forging
- lower mould
- mould
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention relates to a kind of forging processing unit (plant) of transmission shaft flange fork and processing technique, including upper die and lower die, described core rod is embedded in intracardiac in mold base, and the core rod of the core rod lower end hangs that gear is concordant with the bottom surface of mold base, and the core rod seam of core rod upper end stretches out in mold base；Intracardiac in described lower mould offer forging die cavity, intracardiac in lower mould be provided with filling cavity and communicate with the forging die cavity, intracardiac in the lower mould above the forging die cavity offer lower mould seam；Described core rod seam is directed in lower mould seam in forging processing；Its processing technique comprises the steps：1) blanking, is carried out to flanged yoke blank and is heated；2), to heating after material be poured in forging die cavity and jumping-up by filling cavity；3), the core rod seam of upper mould is derived in lower mould seam, and finish-forging shapes.Beneficial effect of the present invention：The forging processing technique of the present invention reduces material consumption, improves the dimensional accuracy of forging, reduces percent defective.
Description
Technical field
A kind of the invention belongs to technical field of forging, more particularly to forging processing unit (plant) and the processing work of transmission shaft flange fork
Skill.
Background technology
There is a part for flanged yoke in the vehicle driving shaft assembly of our company's production, large end face is disc-shape, and this zero
Process program --- shaping of-the finish-forging ----trimming for jumping-up adopted after the heating of part blank.
The design (such as Fig. 1) of common shaping mould：In the center (being separated with double dot dash line) of disk point mould, stay 2.5～
The flash thickness of 3.5mm；In the forging course of processing, forging is full of die cavity, while form overlap 6 after unnecessary metal flows out, with
Trimming punch press cuts off overlap 6 (such as Fig. 2), and (forging+overlap) material after forging is put in trim die 4, by trimming punch 5
Upper and lower motion in trim die 4, forms forging 3 and overlap 6, finally retains useful part forging 3.
The defect of existing process program is：
1st, the utilization rate of material is low, about 75% or so；
2nd, as forging is high vibration equipment, mismatch amount is unstable, and mismatch amount is typically in 0.8mm or so；
3rd, trimming, trimming is needed to increase, trimming can bring the quality problems such as trimming deformation.
Content of the invention
It is an object of the invention to overcoming the shortcomings of that prior art is present, and provide a kind of utilization rate for improving material, nothing
The forging processing unit (plant) for needing the transmission shaft flange of trimming to pitch and processing technique.
The purpose of the present invention is by following technical solution completing.The forging processing unit (plant) of this transmission shaft flange fork,
Including upper die and lower die, described upper mould is made up of core rod, mold base, positioning key using block insert type structure；Described core rod
It is embedded in intracardiac in mold base, it is concordant with the bottom surface of mold base that the core rod of the core rod lower end hangs gear, and by positioning key calmly
Position is fixed, and the core rod seam of core rod upper end stretches out in mold base；Intracardiac in described lower mould offer forging die cavity, lower mould
In intracardiac be provided with filling cavity and communicate with the forging die cavity, intracardiac in the lower mould above the forging die cavity offer lower mould and stop
Mouthful；Described core rod seam is directed in lower mould seam in forging processing.
Preferably, the size phase difference between the lead-in portion of described core rod seam and lower mould seam is mismatch amount,
The mismatch amount is less than 0.3mm.
Preferably, described core rod seam is directed in the importing length in lower mould seam for 10～15mm.
Preferably, described core rod hangs the diameter for keeping off 30mm bigger than core rod seam diameter.
A kind of processing technique of the forging processing unit (plant) that is pitched using transmission shaft flange described above, is comprised the steps：
1) blanking, being carried out to flanged yoke blank and being heated, the weight of the blanking is the hot burn out rate of forge weight+material；
2), to heating after material be poured in forging die cavity by filling cavity, the core rod seam for now going up mould is directed in down
In mould seam, and the end contact of core rod seam is in the surface of forging blank jumping-up；
3), the core rod seam of upper mould is derived in lower mould seam, and finish-forging shapes.
Beneficial effects of the present invention are：
1st, the utilization rate (weight of the former forging processing blanking weight+overlap for forging of disc-like flanged yoke material is improve
Weight+material hot burn out rate), using the present invention after, the weight of blanking is the weight+hot burn out rate of forging, has saved overlap
Weight, typically the utilization rate using material after the invention is more than 98%；
2nd, flanged yoke mismatch amount of the common disc-like with pit be in 0.8mm or so, simultaneously because forging process equipment is high
Vibratory equipment, causes mismatch amount unstable, using the present invention after, the core rod of upper mould is introduced directly in lower mould seam, while upper mould
The size of lead-in portion of core rod differ 0.3mm with the size of drag intracavity；The mismatch amount is made to control within 0.3mm,
The stability of mismatch amount is improve simultaneously；
3rd, reduce disc-like flanged yoke forging processing cost (cost of former technique includes heating cost, jumping-up, finish-forging into
This, trimming cost；After using the present invention, cost includes heating cost, jumping-up, finish-forging cost；Reduce one trimming cost and
The quality problems of the trimming deformation brought during trimming).
Description of the drawings
Fig. 1 is the structural representation of existing upper and lower matched moulds.
Fig. 2 is the structural representation of existing trimming device.
Fig. 3 is the structural representation of the upper and lower matched moulds of the present invention.
Fig. 4 is the structural representation of the upper mould of the present invention.
Fig. 5 is the structural representation of the lower mould of the present invention.
Label in accompanying drawing is respectively：1st, upper mould；2nd, lower mould；3rd, forging；4th, trim die；5th, trimming punch；6th, overlap；
7th, mismatch amount；11st, core rod；12nd, mold base；13rd, positioning key；21st, forging die cavity；22nd, filling cavity；23rd, lower mould seam；111、
Core rod hangs gear；112nd, core rod seam.
Specific embodiment
Detailed introduction is done to the present invention below in conjunction with accompanying drawing：As shown in accompanying drawing 3 to 5, the present invention includes upper mould 1 with
Mould 2, described upper mould 1 are made up of core rod 11, mold base 12, positioning key 13 using block insert type structure；Described core rod 11 is inlayed
It is embedded in intracardiac in mold base 12, it is concordant with the bottom surface of mold base 12 that the core rod of 11 lower end of core rod hangs gear 111, and by calmly
The position positioning of key 13 fixes to prevent upper mould from dropping, and the core rod seam 112 of 11 upper end of core rod stretches out in mold base 12；Under described
Intracardiac in mould 2 offer forging die cavity 21, intracardiac in lower mould 2 be provided with filling cavity 22 and communicate with the forging die cavity 21, at this
Intracardiac in lower mould 2 above forging die cavity 21 offer lower mould seam 23；Described core rod seam 112 is directed in forging processing
In lower mould seam 23, on this, the core rod seam 112 of mould presses lower 23 dimensional fits of the mould seam processing of mould.
Size phase difference between the lead-in portion of described core rod seam 112 and lower mould seam 23 be mismatch amount 7, the mistake
Modulus 7 is less than 0.3mm；No more than 0.3mm, when more than 0.3mm, overlap can be squeezed from the matched moulds of upper and lower mould the mismatch amount 7
Go out.
Described core rod seam 112 is directed in the importing length in lower mould seam 23 for 10～15mm, and which imports the angle at angle
Spend for 90 °.
Described core rod hangs bigger than 112 diameter of the core rod seam 30mm of diameter of gear 111.
A kind of processing technique of the forging processing unit (plant) of transmission shaft flange fork, comprises the steps：
1) blanking, being carried out to flanged yoke blank and being heated, the weight of the blanking is the hot burn out rate of forge weight+material；
2), to heating after material be poured in forging die cavity 21 by filling cavity 22, now go up the core rod seam 112 of mould 1
It is directed in lower mould seam 23, and the end contact of core rod seam 112 is in the surface of forging blank jumping-up；
3), the core rod seam 112 of upper mould 1 is derived in lower mould seam 23, and finish-forging shapes.
The closed forging processing technique of the power transmission shaft disc flange fork of the present invention reduces material consumption, and (utilization rate of material is
More than 98%, except hot-working burn out rate), the dimensional accuracy (mismatch amount is controlled within 0.3mm) of forging is improve, is reduced useless
Product rate (non-trimming, therefore without the need for trimming operation, so as to avoid trimming deformation).
It is understood that it will be understood by those skilled in the art that to technical scheme and inventive concept in addition etc.
With the protection domain that replacement or change should all belong to appended claims of the invention.
Claims (4)
1. a kind of processing technique of the forging processing unit (plant) that employing transmission shaft flange is pitched, the forging processing unit (plant) of transmission shaft flange fork,
Including upper mould (1) and lower mould (2), described upper mould (1) and is determined by core rod (11), mold base (12) using block insert type structure
Position key (13) composition；Described core rod (11) is embedded in intracardiac in mold base (12), the core rod suspension of the core rod (11) lower end
Gear (111) is concordant with the bottom surface of mold base (12), and is fixed by positioning key (13) positioning, the core rod seam of core rod (11) upper end
(112) mold base (12) is stretched out in；Intracardiac in described lower mould (2) offer forging die cavity (21), intracardiac in lower mould (2)
It is provided with filling cavity (22) and communicates with the forging die cavity (21), intracardiac in the lower mould (2) above the forging die cavity (21) opens up
There are lower mould seam (23)；Described core rod seam (112) is directed in lower mould seam (23) in forging processing；It is characterized in that：
Comprise the steps：
1) blanking, being carried out to flanged yoke blank and being heated, the weight of the blanking is the hot burn out rate of forge weight+material；
2), to heating after material be poured in forging die cavity (21) by filling cavity (22), now go up the core rod seam of mould (1)
(112) it is directed in lower mould seam (23), and the end contact of core rod seam (112) is in the surface of forging blank and jumping-up；
3), the core rod seam (112) of upper mould (1) is derived in lower mould seam (23), and finish-forging shapes.
2. the processing technique of the forging processing unit (plant) that employing transmission shaft flange according to claim 1 is pitched, it is characterised in that：Institute
Size phase difference between the lead-in portion of the core rod seam (112) that states and lower mould seam (23) be mismatch amount (7), the mismatch amount
(7) 0.3mm is less than.
3. the processing technique of the forging processing unit (plant) that employing transmission shaft flange according to claim 1 is pitched, it is characterised in that：Institute
The core rod seam (112) that states is directed in the importing length in lower mould seam (23) for 10～15mm.
4. the processing technique of the forging processing unit (plant) that employing transmission shaft flange according to claim 1 is pitched, it is characterised in that：Institute
The core rod stated hangs bigger than core rod seam (112) the diameter 30mm of diameter of gear (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734907.0A CN104525816B (en) | 2014-12-05 | 2014-12-05 | A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734907.0A CN104525816B (en) | 2014-12-05 | 2014-12-05 | A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525816A CN104525816A (en) | 2015-04-22 |
| CN104525816B true CN104525816B (en) | 2017-03-15 |
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| CN201410734907.0A Active CN104525816B (en) | 2014-12-05 | 2014-12-05 | A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522086A (en) * | 2015-05-21 | 2016-04-27 | 安阳联达数控精密锻造股份有限公司 | Compound extruding-forging forming method of automobile transmission shaft slip yoke |
| CN105171365B (en) * | 2015-09-29 | 2018-06-29 | 陕西法士特齿轮有限责任公司 | A kind of deep-cavity thin-wall flange part duplex forging forming method |
| CN106607533A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Forging method for Y-shaped blanks made of plastic materials |
| CN105710268A (en) * | 2016-04-01 | 2016-06-29 | 中信戴卡股份有限公司 | Die for forging production of aluminum alloy control arms |
| CN107138673B (en) * | 2017-06-29 | 2020-04-28 | 太仓久信精密模具股份有限公司 | Cold extrusion overflow forming process of oil pump cover plate |
| CN108406246A (en) * | 2018-05-29 | 2018-08-17 | 河南九环汽车零部件有限公司 | A kind of production technology of truck drive shaft flange york |
| CN109590426A (en) * | 2018-12-05 | 2019-04-09 | 上海交大中京锻压有限公司 | The blank mold structure of automobile engine using new energy resources gear shaft enclosed forging and forming |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3936230B2 (en) * | 2002-04-19 | 2007-06-27 | 日本特殊陶業株式会社 | Manufacturing method of flanged tubular metal fittings |
| CN1227082C (en) * | 2002-07-02 | 2005-11-16 | 杭州万向传动轴有限公司 | Technology for producing preformed blank of flange and fork group products, and special die |
| CN102039361A (en) * | 2009-10-16 | 2011-05-04 | 上海交大中京锻压有限公司 | Composite extrusion forge forming method for automobile flange fork |
| CN102240763A (en) * | 2011-04-16 | 2011-11-16 | 湖北三环锻造有限公司 | Medium-heavy automobile flange die forging process and punching and calibrating composite die thereof |
| CN202239432U (en) * | 2011-08-30 | 2012-05-30 | 山东远大模具材料有限公司 | Embedded flange forging die |
| CN202779455U (en) * | 2012-09-12 | 2013-03-13 | 襄阳金锤锻造有限公司 | Flange structure molding die |
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