CN105171365B - A kind of deep-cavity thin-wall flange part duplex forging forming method - Google Patents
A kind of deep-cavity thin-wall flange part duplex forging forming method Download PDFInfo
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- CN105171365B CN105171365B CN201510634103.8A CN201510634103A CN105171365B CN 105171365 B CN105171365 B CN 105171365B CN 201510634103 A CN201510634103 A CN 201510634103A CN 105171365 B CN105171365 B CN 105171365B
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- forging
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
-
- 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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- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of deep-cavity thin-wall flange part duplex forging forming methods, blank after jumping-up is forged to the bottom shape of forging using closed-die forging mold, the blank extrusion forming that bottom shape will be forged using the mold of forward extrusion again, finally using hot punching except endoporus gross weight, obtain final forging, it realizes deep-cavity thin-wall flange forge piece non-trimming, forward extrusion molding, can not only eliminate the big overlap of thickness in traditional open type forging；And it avoids the punch that will appear in existing closed-die forging too long die life extremely low or shortens the problems such as punch extends die life but needs drilling.The present invention can reduce allowance and manufacturing procedure, reduce single-piece forging material consumption, effectively reduce production cost.
Description
【Technical field】
The invention belongs to automotive transmission parts forging molding fields, and in particular to a kind of deep-cavity thin-wall flange part is compound
Method for forging and molding.
【Background technology】
There is part in gearbox parts for deep-cavity thin-wall flange forge piece, common forging molding process one is open type forging
Type is caused, but with longitudinal direction+lateral overlap, increases resistance, ensure fullness；Second is that closed-die forging is molded, without overlap, molding
Punch draw ratio is close to 2 or reduces height of punch, but need to increase drilling operating.Above-mentioned technique presently, there are the problem of be：Open type
Longitudinal direction+transverse direction overlap in forging is thick big, high material consumption；Punch too long die life is extremely low in closed-die forging or shortens punching
Head the extension punch service life but need increase drilling operating.
【Invention content】
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of deep-cavity thin-wall flange part duplex forging forming method,
The big overlap of thickness that open type forging generates can be not only eliminated, but also the too long mold of the punch that will appear in existing closed-die forging can be avoided
Service life is extremely low or shortens the problems such as punch extends die life but needs drilling, effectively reduces material consumption, reduces work
Sequence.
In order to achieve the above object, the present invention includes the following steps：
Step 1：By the blank jumping-up after heating；
Step 2：Blank forging after jumping-up is gone out to the bottom shape of forging using closed-die forging mold；
Step 3：The blank extrusion forming that bottom shape will be forged using forward extrusion mould；
Step 4：Blank after molding, except endoporus gross weight, obtains final forging using hot punching.
In the step 2, the lower die of closed-die forging mold is identical with forging bottom shape, and upper mold is T-die, pressing mold
Shi Shangmo is closed completely with lower die.
In the step 3, the upper mold lower face of forward extrusion mould is identical with forging upper surface shape, and forward extrusion lower die is
The cavity identical with forging part of the lower die shape, upper mold coordinates with lower die is pressed down against forging lower end by flange position excess metal
Blank lower end shape is kept, when mold reaches forging final forging molding when design is closed height.
Compared with prior art, the blank after jumping-up is forged the bottom shape of forging by the present invention using closed-die forging mold
Shape, then the mold blank extrusion forming that will forge bottom shape using forward extrusion, finally using hot punching except endoporus gross weight,
Final forging is obtained, realizes deep-cavity thin-wall flange forge piece non-trimming, forward extrusion molding, can not only be eliminated in traditional open type forging
Thick big overlap；And it avoids the punch that will appear in existing closed-die forging too long die life extremely low or shortens punch extension
Die life but need drilling the problems such as.The present invention can reduce allowance and manufacturing procedure, reduce single-piece forging material and disappear
Consumption, effectively reduces production cost.
【Description of the drawings】
Fig. 1 is the schematic diagram of step 1 of the present invention；
Fig. 2 is the schematic diagram of step 2 of the present invention；
Fig. 3 is the schematic diagram of step 3 of the present invention.
【Specific embodiment】
The present invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention includes the following steps：
Step 1：Blank 1 is heated to 1200 DEG C of ± 30 DEG C of jumping-ups；
Step 2：Blank forging after jumping-up is gone out to the bottom shape of forging, closed type forged modeling using closed-die forging mold 2
The lower die of tool 2 is identical with forging bottom shape, and upper mold is T-die, and upper mold is closed completely with lower die during pressing mold；
Step 3：The blank extrusion forming that bottom shape will be forged using forward extrusion mould 3, forward extrusion mould 3 it is upper
Mould lower face is identical with forging upper surface shape, forward extrusion lower die be the cavity identical with forging part of the lower die shape, upper mold with
Flange position excess metal is pressed down against forging lower end and keeps 2 lower end shape of blank by lower die cooperation, is closed when mold reaches design
Forging final forging molding when closing height；
Step 4：Blank after molding, except endoporus gross weight, obtains final forging using hot punching.
The method that the present invention removes endoporus gross weight using a kind of new closed-die forging+forward extrusion composite molding+punching, not only
The big overlap of thickness that open type forging generates can be eliminated, and the punch that will appear in existing closed-die forging too long die life can be avoided
The problems such as extremely low or shortening punch extends die life but needs drilling effectively reduces material consumption, reduces process.
Claims (1)
1. a kind of deep-cavity thin-wall flange part duplex forging forming method, which is characterized in that include the following steps：
Step 1：By blank (1) jumping-up after heating；
Step 2：Blank forging after jumping-up is gone out to the bottom shape of forging, closed-die forging mold using closed-die forging mold (2)
(2) lower die is identical with forging bottom shape, and upper mold is T-die, and upper mold is closed completely with lower die during pressing mold；
Step 3：The blank extrusion forming that bottom shape will be forged using forward extrusion mould (3), forward extrusion mould (3) it is upper
Mould lower face is identical with forging upper surface shape, forward extrusion lower die be the cavity identical with forging part of the lower die shape, upper mold with
Flange position excess metal is pressed down against forging lower end and keeps blank (2) lower end shape by lower die cooperation, when mold reaches design
Forging final forging molding when being closed height；
Step 4：Blank after molding, except endoporus gross weight, obtains final forging using hot punching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634103.8A CN105171365B (en) | 2015-09-29 | 2015-09-29 | A kind of deep-cavity thin-wall flange part duplex forging forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634103.8A CN105171365B (en) | 2015-09-29 | 2015-09-29 | A kind of deep-cavity thin-wall flange part duplex forging forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105171365A CN105171365A (en) | 2015-12-23 |
| CN105171365B true CN105171365B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510634103.8A Active CN105171365B (en) | 2015-09-29 | 2015-09-29 | A kind of deep-cavity thin-wall flange part duplex forging forming method |
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| CN (1) | CN105171365B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812871B (en) * | 2017-09-11 | 2019-06-14 | 太原科技大学 | A kind of high flange becomes the thick wall head solid forging method of wall thickness |
| CN108620443B (en) * | 2018-03-27 | 2019-09-20 | 浙江美联智能科技有限公司 | The spindle support forming method of cladding spindle |
| CN114226623B (en) * | 2021-12-21 | 2023-08-11 | 安徽安簧机械股份有限公司 | Semi-closed forming die, forming system and forming method for thin-wall cylindrical part |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005330997A (en) * | 2004-05-18 | 2005-12-02 | Tsubakimoto Chain Co | Cylindrical bearing member and manufacturing method thereof |
| CN2885442Y (en) * | 2006-02-15 | 2007-04-04 | 北京机电研究所 | Axle sleeve extruding die |
| CN201511052U (en) * | 2009-03-05 | 2010-06-23 | 芜湖三联锻造有限公司 | Hole extrusion mould for deep hole forged piece with small diameter |
| CN101992257B (en) * | 2009-08-12 | 2012-12-05 | 中山市三丰金属锻造有限公司 | Method for forging cup part with flange in outside diameter center |
| CN102319863A (en) * | 2011-08-01 | 2012-01-18 | 贵州航天新力铸锻有限责任公司 | Method for forging soldering-free funnel-shaped flanges for petroChina (PTR) flush and drainage pipelines of nuclear power plant |
| US8763224B2 (en) * | 2011-09-16 | 2014-07-01 | John V. Musuraca | Pinion disassembly tool and method |
| CN104511724B (en) * | 2013-12-14 | 2017-06-20 | 柳州市国顺机械制造有限公司 | The forging method of flange |
| CN104841792A (en) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | Molding process of reverse cylinder workpiece having flange at end |
| CN104525816B (en) * | 2014-12-05 | 2017-03-15 | 万向钱潮传动轴有限公司 | A kind of forging processing unit (plant) of transmission shaft flange fork and processing technique |
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| Publication number | Publication date |
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| CN105171365A (en) | 2015-12-23 |
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