CN107931497A - Combine the cold-heading molding technique of fixed link - Google Patents
Combine the cold-heading molding technique of fixed link Download PDFInfo
- Publication number
- CN107931497A CN107931497A CN201711202719.3A CN201711202719A CN107931497A CN 107931497 A CN107931497 A CN 107931497A CN 201711202719 A CN201711202719 A CN 201711202719A CN 107931497 A CN107931497 A CN 107931497A
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- Prior art keywords
- cold
- blank
- extrusion
- fixed link
- forward extrusion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000000465 moulding Methods 0.000 title claims description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 31
- 238000007493 shaping process Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 4
- 229920000914 Metallic fiber Polymers 0.000 abstract description 3
- 238000004049 embossing Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
-
- 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
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Abstract
Disclosed by the invention is a kind of processing technology of cold-heading combination fixed link, it includes the following steps：Cold headers shearing blank, blank pre-determined bit, forward extrusion endoporus, continuation forward extrusion endoporus and shaping upper end section, positive and negative Compound Extrusion screw thread pre-manufactured hole, the forward extrusion draw, are embossed tooth, and shear plasticity deformation is completed to perforate.The method that the present invention uses cold heading technique machine-shaping part, relative to traditional machine-tooled method, stock utilization significantly improves；And processed using continuous cold heading, improve production efficiency；Since the metallic fiber of blank in forming process is not cut off, in the case of not being heat-treated, it can also be ensured that relatively stronger mechanical performance；It since surface quality is good, can directly be electroplated after shaping, eliminate the expense of a large amount of machining times and machining apparatus.
Description
Technical field
The invention belongs to hardware spare and accessory parts processing technique field, be exactly specifically be related to the cold-heading of combination fixed link into
Type technique.
Background technology
Hardware spare and accessory parts manufacturing field, there is a variety of processing and manufacturing schemes for thin-walled slender holes part.Wherein, car
It is one kind the most traditional to cut drilling+punching press closing in embossing+tapping, then has seamless pipe cut-out+punching press is closed up and is embossed+to attack again
The method of tooth comes out, such as the shaping tradition of combination fixed link is exactly the method for using seamless pipe cut-out+punching press.
The mode of traditional turning drilling is that the shaping of hollow pipe is expected using turning and bore process completion solid bar, and
Action that one end axle portion diminishes at the same time with endoporus is completed using punching press closing-in mould and extruded on molded axle portion step afterwards
Zigzag decorative pattern；And seamless pipe cut-out is then directly to purchase the section tube type material identical with the big hole section of part, cutting stock machine
Segmentation, recycles Sheet Metal Forming Technology to reach identical closing in embossing effects；Cold-heading is direct using tubular member backward and forward extrusion technology
Solid bar is shaped to hollow pipe, and the action of punching press closing in embossing is completed on the mould of multistation machine, is reached
Identical effect.The defects of traditional turning drilling via formations method is present in processing duration, low production efficiency, stock utilization is low,
And the defects of seamless pipe cutting-off method, is cost of material height, low production efficiency.
The content of the invention
The purpose of the present invention is high there are cost of material by seamless pipe cutting-off method aiming at existing combination fixed link,
The technological deficiency of low production efficiency, there is provided a kind of cold-heading molding technique for combining fixed link, rushes moulding process using five moulds five, lead to
Cross the continuously shaped cold-heading molding for realizeing combination fixed link of five stations.
Technical solution
In order to realize above-mentioned technical purpose, the cold-heading molding technique for the combination fixed link that the present invention designs, it is characterised in that
It includes following steps：
(1) cold headers shearing blank；
(2) blank is pre-positioned；
(3) forward extrusion endoporus；
(4) forward extrusion endoporus and shaping upper end section are continued；
(5) positive and negative Compound Extrusion screw thread pre-manufactured hole；
(6) the forward extrusion draw, is embossed tooth, and perforation is completed in shear plasticity deformation.
Further, the sizing die in step (2) the blank pre-determined bit in forming process, extremely rushes straight hole mould shaping cut-out
Material, main mould rush rod and extrude pre-determined bit chamfer mouth in blank one end.
Further, bore depth is extruded in step (3) the forward extrusion endoporus and is not more than 4 times of apertures.
Further, step (4) the forward extrusion endoporus is using the backward extrusion of solid member and the forward extrusion of hollow object.
Further, the positive and negative Compound Extrusion screw thread pre-manufactured hole of step (5) is prefabricated using positive and negative compound extrusion forming screw thread
Hole.
Beneficial effect
A kind of cold-heading molding technique for combining fixed link provided by the invention, relatively existing moulding process has following excellent
Point：
(1) production efficiency is high.Cold-heading Multi-station automatic forming machine, 90~120r/min of linkage speed.
(2) cost of material is low.Compared to the customization tubing of cut-out, the batch disk member cost used in cold-heading is lower.
(3) stock utilization is high.Relative to traditional machine-tooled method, stock utilization significantly improves.
(4) good mechanical property.Since the metallic fiber of blank in forming process is not cut off, situation about being heat-treated is not done
Under, it can also be ensured that relatively stronger mechanical performance.
(5) manufacturing procedure is simplified.Since surface quality is good, can directly be electroplated after shaping, when eliminating a large amount of machinings
Between and machining apparatus expense.
Brief description of the drawings
Attached drawing 1 is the flow diagram of moulding process of the embodiment of the present invention.
Attached drawing 2 is partial enlarged view at X in attached drawing 1.
Attached drawing 3 is partial enlarged view at Y in attached drawing 1.
Attached drawing 4 is that the punch schematic diagram that hole rushes rod is squeezed in the embodiment of the present invention.
Attached drawing 5 is the punch schematic diagram that middle punch of embodiment of the present invention drawing light rushes rod.
Embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
As shown in Figure 1, in order to solve the problems, such as the cold-heading molding of combination fixed link, the present invention is washed into type using five moulds five and sets
It is standby, pass through the continuously shaped cold-heading molding for realizing the slender holes thin-walled tube components as combination fixed link of five stations.
Cut-out material 1 in forming process, it is using plasticity detrusion mode that continuous cold-heading steel disk is first herein
Cut off one by one, shearing length is converted by volume of part conservation principle.The wired mould of used mould and cut-off-die, in two moulds
Heart hole contact surface aperture is as shearing edge, crisscross motion, completes shear action, general provision, and line die hole footpath=line footpath+
0.05mm, cut-off-die aperture=line footpath+0.10mm.
The blank 2 of one station, the sizing die (center pre-determined bit) in forming process, extremely rushes straight hole mould shaping cut-out material, main
Stamping rod extrudes pre-determined bit chamfer mouth in blank one end, it is therefore an objective to allows the rod that rushes of next station extruded hole to start into commitment positions
Type, preferably ensures the concentricity of extruded hole.
The blank 3 of=bis- stations, endoporus forward extrusion, extruded hole depth limit general provision are 4 times of apertures, its mold feature
Be extruded hole rushes rod with calibrating strap design feature as shown in Figure 4, it is therefore an objective to reduce in forming process metal stock with
The contact area of mould, to reach reduction frictional resistance, improves bore wall quality, the design idea of wherein exhausting-gas hole is
There is provided by the air pressure formed during high-speed molding between blank and mould and hydraulic pressure and give vent to channel, avoid blank and
Mould is subject to expendable destruction.
The blank 4 of three stations, endoporus continues forward extrusion and upper end section shaping, its technology characteristics are that deformation belongs to
The backward extrusion of solid member and the forward extrusion of hollow object, its mold feature are that main mould is T-shaped pipe-activity mold insert structure, spring branch
Hold mode core, to formwork moved beneath under the pressure of punch die, relatively, main mould is rushed bastinade and is squeezed into completion internal control is secondary inside blank
Molded, the blank in core rod is got into die cavity by the T-shaped pipe of main mould, completes the shaping of upper end section.
The blank 5 of four stations, screw thread pre-manufactured hole extrusion forming, positive and negative compound extrusion forming screw thread pre-manufactured hole, in upper end hole
The cone angle of preforming 8 ° of mouth is as shown in Figure 3, it is therefore an objective to provides the space cut for next station perforation waste material, avoids lotus root fracture of wire
Even, endoporus is pulled.
The part 6 of five stations, the perforation of screw thread pre-manufactured hole and the lower end beam bar draw, embossing tooth, its technology characteristics are to wear
Hole and embossing, perforation are to belong to plasticity detrusion, thus punch block can jagged band, therefore the present invention design such as the institute of attached drawing 5
The perforation shown draws light to rush rod to carry out shaping to the burr band of perforation, and feature 1011 is to draw light to rush rod leading portion main body, feature 1012
It is level-one calibrating strap, feature 1013 is transition circular groove between two-stage calibrating strap, and feature 1014 is two level calibrating strap, general provision two
Level calibrating strap is bigger than level-one calibrating strap by 0.05, and feature 1015 is air discharge duct.Level-one calibrating strap completes the plasticity detrusion of perforation,
Two level calibrating strap completes the shaping of perforation burr band.Embossing belongs to Upsetting, also cries small-sized die forging.
Advantage possessed by the present embodiment is as follows compared with prior art：
1. production efficiency is high.Cold-heading Multi-station automatic forming machine, 90~120r/min of linkage speed.
2. cost of material is low.Compared to the customization tubing of cut-out, the batch disk member cost used in cold-heading is lower.
3. stock utilization is high.Relative to traditional machine-tooled method, stock utilization significantly improves.
4. good mechanical property.Since the metallic fiber of blank in forming process is not cut off, in the case of not being heat-treated,
It can also ensure relatively stronger mechanical performance
5. manufacturing procedure is simplified.It since surface quality is good, can directly be electroplated after shaping, eliminate a large amount of machining times
And the expense of machining apparatus.
Structure, ratio, size depicted in the present embodiment institute accompanying drawings etc., only to coordinate specification it is revealed in
Hold, so that those skilled in the art understands and reads, be not limited to the enforceable qualifications of the present invention, therefore do not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size, can produce not influencing the present invention
Under the effect of raw and the purpose that can reach, should all still it fall in the range of disclosed technology contents are obtained and can covered.
Meanwhile cited such as " on ", " under ", "left", "right", " centre ", " clockwise ", the use of " counterclockwise " in this specification
Language, is merely convenient to understanding for narration, and is not used to limit the enforceable scope of the present invention, the change of its relativeness or tune
It is whole, in the case where changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Claims (5)
1. combine the cold-heading molding technique of fixed link, it is characterised in that it includes following steps：
(1) cold headers shearing blank；
(2) blank is pre-positioned；
(3) forward extrusion endoporus；
(4) forward extrusion endoporus and shaping upper end section are continued；
(5) positive and negative Compound Extrusion screw thread pre-manufactured hole；
(6) the forward extrusion draw, is embossed tooth, and perforation is completed in shear plasticity deformation.
2. the cold-heading molding technique of combination fixed link as claimed in claim 1, it is characterised in that：Step (2) blank is pre-
Sizing die in positioning in forming process, extremely rushes straight hole mould shaping cut-out material, and main mould is rushed rod and fallen in blank one end extrusion pre-determined bit
Angle mouthful.
3. the cold-heading molding technique of combination fixed link as claimed in claim 1, it is characterised in that：Step (3) forward extrusion
Bore depth is extruded in endoporus and is not more than 4 times of apertures.
4. the cold-heading molding technique of combination fixed link as claimed in claim 1, it is characterised in that：Step (4) forward extrusion
Endoporus is using the backward extrusion of solid member and the forward extrusion of hollow object.
5. the cold-heading molding technique of combination fixed link as claimed in claim 1, it is characterised in that：The step (5) is just repeatedly
Close thread-rolling screw pre-manufactured hole and use positive and negative compound extrusion forming screw thread pre-manufactured hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202719.3A CN107931497A (en) | 2017-11-27 | 2017-11-27 | Combine the cold-heading molding technique of fixed link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202719.3A CN107931497A (en) | 2017-11-27 | 2017-11-27 | Combine the cold-heading molding technique of fixed link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107931497A true CN107931497A (en) | 2018-04-20 |
Family
ID=61949015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202719.3A Pending CN107931497A (en) | 2017-11-27 | 2017-11-27 | Combine the cold-heading molding technique of fixed link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107931497A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013996A (en) * | 2018-09-06 | 2018-12-18 | 宁波思明汽车附件有限公司 | A kind of cold-heading molding valve cock and its moulding process |
| CN109514189A (en) * | 2018-11-12 | 2019-03-26 | 广州小出钢管有限公司 | A kind of eccentric processing method with tooth rectangular tube of automobile shock |
| CN109551180A (en) * | 2018-11-29 | 2019-04-02 | 上海鸿基金属制品有限公司 | A kind of processing technology of threaded long casing |
| CN109570922A (en) * | 2018-11-29 | 2019-04-05 | 上海鸿基金属制品有限公司 | A kind of processing technology of hollow Step Shaft |
| CN112743020A (en) * | 2020-12-09 | 2021-05-04 | 贵阳万江航空机电有限公司 | Method for processing elongated hole part by cold heading process |
| CN113020515A (en) * | 2021-03-11 | 2021-06-25 | 南昌市三易汽配有限公司 | Air conditioner inflation valve seat machining method |
| CN113857418A (en) * | 2021-08-23 | 2021-12-31 | 宁波安拓实业有限公司 | Method for manufacturing T-shaped adjusting nut blank for vehicle steering system |
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| CN106694792A (en) * | 2016-12-28 | 2017-05-24 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device and process for specially-shaped torsion rod |
| CN106862475A (en) * | 2017-02-23 | 2017-06-20 | 江苏天毅冷镦股份有限公司 | The cold upsetting production technique of interior hexagonal studs blank |
| CN206316302U (en) * | 2016-10-17 | 2017-07-11 | 上海鸿基金属制品有限公司 | A kind of punch structure for cold extrusion shaped high precision inner-pore |
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| US20040231391A1 (en) * | 2001-07-11 | 2004-11-25 | Diethelm Wompner | Method for extruding a profile or a similar billet from a bolt or bar and corresponding device |
| KR100781142B1 (en) * | 2007-05-09 | 2007-12-03 | 주식회사 신도하이텍 | Manufacturing method of a sylindrical bushing |
| CN101249600A (en) * | 2008-03-18 | 2008-08-27 | 上海鼎阜机械制造有限公司 | Forging bearing straight three-way production method |
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| CN104057003A (en) * | 2014-06-30 | 2014-09-24 | 常州日马精密锻压有限公司 | Shock absorber internal shaft molding process and mold group thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013996A (en) * | 2018-09-06 | 2018-12-18 | 宁波思明汽车附件有限公司 | A kind of cold-heading molding valve cock and its moulding process |
| CN109514189A (en) * | 2018-11-12 | 2019-03-26 | 广州小出钢管有限公司 | A kind of eccentric processing method with tooth rectangular tube of automobile shock |
| CN109551180A (en) * | 2018-11-29 | 2019-04-02 | 上海鸿基金属制品有限公司 | A kind of processing technology of threaded long casing |
| CN109570922A (en) * | 2018-11-29 | 2019-04-05 | 上海鸿基金属制品有限公司 | A kind of processing technology of hollow Step Shaft |
| CN112743020A (en) * | 2020-12-09 | 2021-05-04 | 贵阳万江航空机电有限公司 | Method for processing elongated hole part by cold heading process |
| CN112743020B (en) * | 2020-12-09 | 2022-11-15 | 贵阳万江航空机电有限公司 | Method for processing elongated hole part by using cold heading process |
| CN113020515A (en) * | 2021-03-11 | 2021-06-25 | 南昌市三易汽配有限公司 | Air conditioner inflation valve seat machining method |
| CN113857418A (en) * | 2021-08-23 | 2021-12-31 | 宁波安拓实业有限公司 | Method for manufacturing T-shaped adjusting nut blank for vehicle steering system |
| CN113857418B (en) * | 2021-08-23 | 2023-12-05 | 宁波安拓实业有限公司 | Manufacturing method of T-shaped adjusting nut blank for vehicle steering system |
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Application publication date: 20180420 |