CN109570922A - A kind of processing technology of hollow Step Shaft - Google Patents
A kind of processing technology of hollow Step Shaft Download PDFInfo
- Publication number
- CN109570922A CN109570922A CN201811444720.1A CN201811444720A CN109570922A CN 109570922 A CN109570922 A CN 109570922A CN 201811444720 A CN201811444720 A CN 201811444720A CN 109570922 A CN109570922 A CN 109570922A
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- China
- Prior art keywords
- processing technology
- blank
- tail portion
- hollow
- small bar
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- 238000012545 processing Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 229920000914 Metallic fiber Polymers 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 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
- 238000007514 turning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A kind of processing technology of hollow Step Shaft disclosed by the invention, it includes cold headers shearing blank, end face shaping and blank pre-determined bit hole forming, the small bar in intense beam tail portion；Chamfering, the several steps of drill centers on the small bar of the tube reducing beam other end and pre-determined bit hole forming, upset step broad in the middle, molding intermediate thin step/tail portion location hole and head.This processing technology using based on cold-heading+drilling supplemented by technique machine-shaping part, relative to the full machine-tooled method of tradition, stock utilization is significantly improved；And processed using continuous cold heading, improve production efficiency；The metallic fiber of blank is not cut off in forming process, in the case where not being heat-treated, it can also be ensured that relatively stronger mechanical performance；Only simple drilling device is needed to can be completed after cold-heading molding, eliminates the expense of a large amount of machining times and machining apparatus.
Description
Technical field
It is specifically exactly to be related to a kind of processing work of hollow Step Shaft the invention belongs to hardware spare and accessory parts processing technique field
Skill.
Background technique
It is usually used in machinery industry to arrive various hardwares as processing and installation, such as fastener is exactly a kind of common
Hardware, be used a kind of mechanical when two or more parts or component to be fastenedly connected into an entirety
The general name of part.
Traditionally the processing of Step Shaft takes the boards such as lathe, drilling machine to complete, and selects major diameter bar, the turning on lathe
Then multi-step out drills on drilling machine.Whole process stock utilization is low, and machining period is long, and production efficiency is low, it is difficult to
Meet the needs produced in enormous quantities.
Summary of the invention
The purpose of the present invention is to the processing technology of existing hollow Step Shaft, there are cost of material height, production efficiency
Low technological deficiency provides a kind of processing technology of hollow Step Shaft, based on cold-heading, while the processing side supplemented by drilling
Formula first forms cold heading blank on five station cold headers, then drills out centre bore on a particular device, improves band center
The production efficiency of hole Step Shaft reduces the waste of raw material, can satisfy the demand of typical products in mass production production.
Technical solution
In order to achieve the above technical purposes, a kind of processing technology for hollow Step Shaft that the present invention designs, which is characterized in that
It including the following steps:
(1) cold headers shear blank；
(2) end face shaping and blank are pre-positioned hole forming；
(3) the small bar in intense beam tail portion and molding tail portion aperture；
(4) the small bar of the tube reducing beam other end and pre-determined bit hole forming；
(5) upset step broad in the middle；
(6) chamfering on intermediate thin step and head is formed；
(7) drill centers.
Further, the top of the blank formed in step (1) is encased in the step (2) using punch die, it is whole in punch die
Shape upper surface rushes stick in the preforming location hole of the blank other end using main mould.
Further, solid member forward extrusion is used in the step (3), by the small bar in calibrating strap intense beam tail portion in main mould, so
Stick, which is rushed, using main mould afterwards withstands molding tail portion aperture.
Further, the small bar of the free Shu Shangduan of tube reducing is used in the step (4), and stick molding pre-determined bit hole is rushed by punch die.
Further, upset intermediate shank portion in the step (5), forms step broad in the middle.
Further, upset molding intermediate thin step in the step (6) carries out last shaping and moulded head to entire part
Upper chamfering.
Further, 3.1mm centre bore is drilled out in the step (7).
Advantage for present invention is as follows compared with prior art:
1. high production efficiency: cold-heading Multi-station automatic molding machine, 90~120r/min of linkage speed；
2. raw material availability is high, at low cost: compared to major diameter bar turnery processing outer steps, cold-heading is useless without cutting
Material, stock utilization is high, and the cost of material is low；
3. good mechanical property: the metallic fiber of blank is not cut off in forming process, can be in the case where not being heat-treated
Guarantee relatively stronger mechanical performance；
4. production cost is low: cold-heading straight forming eliminates the expense of a large amount of machining times and machining apparatus, production
Cost is substantially reduced.
Detailed description of the invention
Fig. 1 a is that cold headers shear blank schematic diagram in the embodiment of the present invention.
Fig. 1 b is end face shaping and blank pre-determined bit hole forming station blank schematic diagram in the embodiment of the present invention.
Fig. 1 c is the small bar in intense beam tail portion and molding tail portion aperture station blank schematic diagram in the embodiment of the present invention.
Fig. 1 d is the small bar of the tube reducing beam other end and pre-determined bit hole forming station blank schematic diagram in the embodiment of the present invention.
Fig. 1 e is upset step position blank schematic diagram broad in the middle in the embodiment of the present invention.
Fig. 1 f is that chamfering station part schematic diagram on intermediate thin step and head is formed in the embodiment of the present invention.
Fig. 2 is third step intense beam main mould calibrating strap structural schematic diagram in the embodiment of the present invention.
Fig. 3 is the free beam punch die structure schematic diagram of the 4th step tube reducing in the embodiment of the present invention.
Fig. 4 is that the 5th step laterally divides mould mold structure diagram in the embodiment of the present invention.
Fig. 5 be in the embodiment of the present invention the 7th step drilling after part.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be further described.
Embodiment
In order to solve the problems, such as a kind of cold-heading molding of hollow Step Shaft, the present invention rushes molding equipment using five moulds five, passes through
The continuously shaped cold-heading molding for realizing 5 grades of Step Shafts of five stations.
It is that cold headers are sheared blank by the first step as shown in fig. la: using the shear-deformable mode of plasticity by continuous cold-heading
Wire rod is cut off one by one, and shearing length is converted by volume of part conservation principle.The wired mould of used mold and cut-off-die, two moulds
Have centre bore contact surface aperture be used as shearing edge, crisscross motion, completion shear action, general provision, line die hole diameter=line footpath+
0.05mm, cut-off-die aperture=line footpath+0.10mm.
It is the blank of the shaping of second step end face and blank pre-determined bit hole forming station as shown in figure ib, in forming process
Sizing die, blank upper end department packet shaping upper surface in punch die, it is therefore an objective to guarantee the flatness and subsequent forming length of end face
With the stability of concentricity, main mould rushes stick in the preforming location hole of the blank other end, rushes stick for lower station extruded hole and position, and protects
Demonstrate,prove the concentricity of extruded hole.
It is the small bar in third step intense beam tail portion and the blank for forming tail portion aperture station as shown in figure ic, solid member is just squeezed
Pressure is equipped with sizing band structure as shown in Fig. 2 in main mould, intense beam goes out the small bar in lower end, then rushes stick using main mould and withstand, pre-
Continue to form tail portion aperture in the position of molding hole.The structure of main mould calibrating strap can be reduced in forming process between metal and mold
Contact area avoids pulling for piece surface to reduce frictional resistance, obtains preferable surface quality and circularity.
It is the small bar of the 4th step tube reducing beam other end and the blank for being pre-positioned hole forming station as shown in attached drawing 1d, tube reducing is free
The small bar of Shu Shangduan rushes stick molding pre-determined bit hole by punch die, and as shown in Fig. 3, punch die is equipped with sizing band structure and punch die oral area
30 ° of chamferings, it is small that station forms the contraction percentage of area, among part position not jumping-up in the case where free beam go out the small bar in upper end.
It is the blank of the upset step position broad in the middle of the 5th step as shown in attached drawing 1e, 90 ° of big step lower end chamfering guarantees material
Material filling is complete.
It is the part of chamfering station on the 6th one-step forming intermediate thin step and head as shown in attached drawing 1f, forms intermediate thin step
And chamfering on head, as shown in Fig. 4, die joint is provided with air drain, and avoiding feeling suffocated in mold causes part not full.
It is the part after the drilling of the 7th step as shown in Fig. 5.
Advantage for present invention is as follows compared with prior art:
1. high production efficiency: cold-heading Multi-station automatic molding machine, 90~120r/min of linkage speed.
2. raw material availability is high, at low cost: compared to major diameter bar turnery processing outer steps, cold-heading is useless without cutting
Material, stock utilization is high, and the cost of material is low.
3. good mechanical property: since the metallic fiber of blank in forming process is not cut off, in the case where not being heat-treated,
It can also guarantee relatively stronger mechanical performance
4. production cost is low: due to cold-heading straight forming, the expense of a large amount of machining times and machining apparatus is eliminated,
Production cost is substantially reduced.
The present embodiment structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Together
When, cited such as "upper" in this specification, "lower", "left", "right", " centre ", " clockwise ", " counterclockwise " term,
It is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness is altered or modified,
It is changed under technology contents without essence, when being also considered as the enforceable scope of the present invention.
Claims (7)
1. a kind of processing technology of hollow Step Shaft, which is characterized in that it including the following steps:
(1) cold headers shear blank；
(2) end face shaping and blank are pre-positioned hole forming；
(3) the small bar in intense beam tail portion and molding tail portion aperture；
(4) the small bar of the tube reducing beam other end and pre-determined bit hole forming；
(5) upset step broad in the middle；
(6) chamfering on intermediate thin step and head is formed；
(7) drill centers.
2. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is utilized in the step (2)
Punch die encases the top of the blank formed in step (1), and the shaping upper surface in punch die rushes stick in the blank other end using main mould
Preforming location hole.
3. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is used in the step (3)
Then solid member forward extrusion rushes stick using main mould and withstands molding tail portion aperture by the small bar in calibrating strap intense beam tail portion in main mould.
4. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is used in the step (4)
The small bar of the free Shu Shangduan of tube reducing rushes stick molding pre-determined bit hole by punch die.
5. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is upset in the step (5)
Intermediate shank portion forms step broad in the middle.
6. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is upset in the step (6)
Intermediate thin step is formed, chamfering in last shaping and moulded head is carried out to entire part.
7. a kind of processing technology of hollow Step Shaft as described in claim 1, it is characterised in that: it is drilled out in the step (7)
3.1mm centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444720.1A CN109570922A (en) | 2018-11-29 | 2018-11-29 | A kind of processing technology of hollow Step Shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444720.1A CN109570922A (en) | 2018-11-29 | 2018-11-29 | A kind of processing technology of hollow Step Shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109570922A true CN109570922A (en) | 2019-04-05 |
Family
ID=65925639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811444720.1A Pending CN109570922A (en) | 2018-11-29 | 2018-11-29 | A kind of processing technology of hollow Step Shaft |
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| Country | Link |
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| CN (1) | CN109570922A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538953A (en) * | 2019-08-26 | 2019-12-06 | 上海华鞍汽车配件有限公司 | Cold heading one-step forming process for automotive multi-step bushing |
| CN111001988A (en) * | 2019-12-19 | 2020-04-14 | 重庆阳登机电有限公司 | Motor shaft manufacturing process |
| CN111097867A (en) * | 2019-12-27 | 2020-05-05 | 上海鸿基金属制品有限公司 | Automobile timing chain tensioner perforating pin shaft forming process |
| CN114810795A (en) * | 2022-04-08 | 2022-07-29 | 江苏益铖金属成型有限公司 | Middle shaft for electric bicycle and processing technology thereof |
| CN115415745A (en) * | 2022-09-09 | 2022-12-02 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging of shafting containing holes |
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| CN1435287A (en) * | 2002-01-29 | 2003-08-13 | 贵州安大航空锻造有限责任公司 | Integral forging process for long-shaft high-temperature alloy large forging |
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| CN104439002A (en) * | 2014-11-15 | 2015-03-25 | 苏州工业园区新凯精密五金有限公司 | Adapter shaft cold heading forming technology and die structure of formed flower gear |
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| CN106903251A (en) * | 2017-02-23 | 2017-06-30 | 江苏天毅冷镦股份有限公司 | Through hole sleeve metal parts cold upsetting production technique long |
| KR20180029300A (en) * | 2016-09-12 | 2018-03-21 | (주) 호창엠에프 | Method for manufacturing long hollow type drive shaft through cold forging precess |
| CN107931497A (en) * | 2017-11-27 | 2018-04-20 | 上海鸿基金属制品有限公司 | Combine the cold-heading molding technique of fixed link |
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| CN1435287A (en) * | 2002-01-29 | 2003-08-13 | 贵州安大航空锻造有限责任公司 | Integral forging process for long-shaft high-temperature alloy large forging |
| JP2007064439A (en) * | 2005-09-01 | 2007-03-15 | Nissan Motor Co Ltd | Rivet and joining method |
| CN101352799A (en) * | 2008-09-16 | 2009-01-28 | 江苏森威精锻有限公司 | Long shaft blocking forward extrusion forming method |
| CN101579800A (en) * | 2009-06-12 | 2009-11-18 | 大丰市中德精锻件有限公司 | Warm and cold forging process for precision forging piece of integrated long-shaft inner ball cage |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110538953A (en) * | 2019-08-26 | 2019-12-06 | 上海华鞍汽车配件有限公司 | Cold heading one-step forming process for automotive multi-step bushing |
| CN110538953B (en) * | 2019-08-26 | 2021-01-05 | 上海华鞍汽车配件有限公司 | Cold heading one-step forming process for automotive multi-step bushing |
| CN111001988A (en) * | 2019-12-19 | 2020-04-14 | 重庆阳登机电有限公司 | Motor shaft manufacturing process |
| CN111001988B (en) * | 2019-12-19 | 2021-01-08 | 重庆登阳机电有限公司 | Motor shaft manufacturing process |
| CN111097867A (en) * | 2019-12-27 | 2020-05-05 | 上海鸿基金属制品有限公司 | Automobile timing chain tensioner perforating pin shaft forming process |
| CN114810795A (en) * | 2022-04-08 | 2022-07-29 | 江苏益铖金属成型有限公司 | Middle shaft for electric bicycle and processing technology thereof |
| CN115415745A (en) * | 2022-09-09 | 2022-12-02 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging of shafting containing holes |
| CN115415745B (en) * | 2022-09-09 | 2024-01-26 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging with hole shafting |
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