CN110421109A - A kind of cold pier extrusion-processing technology of toothed member - Google Patents
A kind of cold pier extrusion-processing technology of toothed member Download PDFInfo
- Publication number
- CN110421109A CN110421109A CN201910810816.3A CN201910810816A CN110421109A CN 110421109 A CN110421109 A CN 110421109A CN 201910810816 A CN201910810816 A CN 201910810816A CN 110421109 A CN110421109 A CN 110421109A
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- CN
- China
- Prior art keywords
- extrusion
- toothed member
- cold
- blank
- processing technology
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
Abstract
The present invention relates to Gearmaking Technology technical fields, it discloses a kind of cold pier extrusion-processing technology of toothed member, solve and are difficult to the technical issues of distinguishing timing gears installation direction, including following procedure of processing at present: S1, choosing turned blank；S2, tooth Profile Machining mold is installed to forging and stamping bed；S3, blank is mounted in processing mold；S4, the starting downward weight of cold extrusion lathe, the one-pass molding toothed member；S5, finished product is taken out.According to above technical scheme, cold extrusion replaces tradition cutting, is to improve stock utilization, intensity, precision and reduce manufacturing cost, guarantees dimensional stability, consistency, cold extrusion is the strategic transformation of manufacturing industry, and facilitates the installation direction for differentiating timing gears.
Description
Technical field
The present invention relates to Gearmaking Technology technical fields, more specifically, it relates to which a kind of cold pier of toothed member squeezes and adds
Work technique.
Background technique
Timing system, refers to the timing system of engine, and Variable Valve Timing Technique of IC Engine is in recent years by gradually
Applied to one of the new technology in Modern Car, charge is can be improved using variable valve timing technology in engine,
Increase coefficient of charge, the available further raising of the torque and power of engine.
If Fig. 1 is the timing gears in timing system, timing gears include gear part A and canister portion B, are had just on canister portion B
In the notch C for differentiating installation timing gears installation direction.The existing timing gears are in processing, using traditional hobboing cutter gear hobbing
Mode processed.
But above-mentioned timing gears are during practical gear hobbing process, as Fig. 2 is processed by the way of traditional hobboing cutter gear hobbing
When, many notch C are formed on the canister portion B of the timing gears obtained after processing, and the tooth socket on notch C and gear part A is one by one
It is corresponding.It normally works in timing system though the notch C of extra processing does not influence timing gears, due to extra processing
Multiple notch C make the installation direction in actual installation timing gears be difficult to hold it is accurate.
Summary of the invention
The timing gears come out for the traditional hobboing cutter gear hobbing process proposed in background technique are difficult to distinguish installation direction
Technical problem, the present invention is intended to provide a kind of cold pier extrusion-processing technology of toothed member, by using cold pier extrusion-processing technology, from
And the side of finished gear will not extra processing notch, achieve the purpose that facilitate discrimination.
To achieve the above object, the present invention provides the following technical scheme that
A kind of cold pier extrusion-processing technology of toothed member, including following procedure of processing:
S1, turned blank is chosen；
S2, tooth Profile Machining mold is installed to forging and stamping bed；
S3, blank is mounted in processing mold；
S4, the starting downward weight of cold extrusion lathe, the one-pass molding toothed member；
S5, finished product is taken out.
Through the above technical solutions, according to China forge and press association's statistics, China's automobile sales volume in 2012 up to 22,000,000,
Wherein about 200,000 t of cold-extruded part, accounts for the 5% of forging part.And the U.S. produces cold-extruded part 1,000,000 or more per year, 80% is auto parts,
There is 43Kg cold-extruded part in Japanese Toyota 1.8L capacity car, there are also 35Kg cold extrusion standard component, cold extrusion, which will definitely replace, is cut
It cuts, is to improve stock utilization, intensity, precision and reduce manufacturing cost, guarantees dimensional stability, consistency, cold extrusion is
The strategic transformation of manufacturing industry.
Gear carries out the traditional handicraft that cutting manufacture is decades, and cutting production can generate various shadows to profile accuracy
It rings.For example, the accuracy of manufacture of lathe itself and use the time, the accuracy of manufacture and abrasion of hobboing cutter.Fixture designing it is reliable
Property, worker operation process etc. all can be the precision for influencing gear.Practical cold-extrusion technology, first its blank are through overheating cold drawing
System, than the even tissue of forging, material is improved its density etc. more by squeezing.In heat treatment process, deflection is reduced, is made
It with mold to tooth disposal molding, both improved work efficiency, and saved material, and guarantee the consistency, steady of tooth proportions, precision
It is qualitative, it is the leap of quality and quantity.
In addition, not having the notch of extra processing, convenient working on timing gears by the timing gears of cold extrusion production
Personnel are to distinguish installation direction carrying out timing gears installation, improve working efficiency.
The present invention is further arranged to: the blank chosen in step S1 is the original blank of toothed member.
Through the above technical solutions, cold extrusion operation is carried out by original blank, it can be to the material of molding timing gears
Good control is expected, so that the material of timing gears is consistent with the former material of timing gears.
The present invention is further arranged to: tooth Profile Machining mold includes upper mold and lower mold in step S2, and upper mold includes
Upper mould body and squeezing rod, lower mold include that lower mold body and inside have die cavity identical with finished product shape, and blank is squeezed
To die cavity, squeezing rod squeezes blank material to die cavity, extrusion forming finished product.
The present invention is further arranged to: squeezing rod is in cylindrical type.
Through the above technical solutions, the squeezing rod of cylindrical type provides downwards heavier pressure, blank is squeezed into die cavity,
So that blank is squeezed into the shape of die cavity, timing gears are formed.
The present invention is further arranged to: being equipped with several guide posts in upper mould body, is offered and lead in lower mold body
To the corresponding pilot hole of column, guide post activity is plugged in pilot hole.
Through the above technical solutions, setting guide post is not easy to shake so that direction of the upper mould body when pushing is more stable
Dynamic, so that forming force is more stable, molding effect is more preferably.
The present invention is further arranged to: the bottom of lower mold body is equipped with interim article putting groove, and lower mold body, which is placed in, temporarily sets
In object slot, and the side of lower mold body has material-putting space.
Through the above technical solutions, interim article putting groove is arranged, produced so that convenient working personnel temporarily place in article putting groove
Product or small tool provide the convenience of execute-in-place, convenient working.
The present invention is further arranged to: forming blocks is detachably equipped in lower mold body, die cavity is provided in forming blocks.
Through the above technical solutions, setting forming blocks it is detachable, when die cavity deformation when, forming blocks can be disassembled into
Row replacement, without replacing whole lower mold.
The present invention is further arranged to: taking out finished product in the S5 and the tool with magnet is used to carry out in a manner of adsorbing
It takes out, after taking out article, the iron filings that cold extrusion generates are blown away by tracheae to be cleared up.
Through the above technical solutions, the product surface temperature due to extrusion forming is higher, relatively scald one's hand when directly taking, because
This uses the tool with magnet to carry out drawing in a manner of adsorbing more convenient, reduces high temperature burning to the hand of staff
Wound；Meanwhile by the way of the cleaning that high pressure gas carries out iron filings, so that cleaning is more convenient, without using special tool(s), or
Certain moduli lamps structure is made in person.
In conclusion the invention has the following advantages:
1., convenient judgement timing gears installation direction during installation, improve installation effectiveness；
2., since gear hobbing process can machine away many materials, capable of saving material, (single timing gears are from 210g-
12og)；
3., the cold extrusion more preferable (density of the metallographic structures of timing gears that helps to improve the density of timing gears, and produce
8.0-8.1 is promoted to from original 7.8)；
4., the accuracy of gear of timing gears produced by cold extrusion it is more preferable, the consistency of tooth form is more preferably (from original 7
Grade is promoted to present 5 grades or 3-4 grades)；
5., relative to gear hobbing process, cold extrusion can one-pass molding, therefore, processing efficiency improves very much (from daily 200
Part is increased to 1500).
Detailed description of the invention
Fig. 1 is background technique referring to figure one, shows the structure of standard timing gears；
Fig. 2 is background technique referring to figure two, shows the structure of gear hobbing process timing gears；
Fig. 3 is the overall structure diagram of processing mold.
Appended drawing reference: 1, upper mold；11, upper mould body；12, squeezing rod；13, guide post；2, lower mold；21, lower die master
Body；211, pilot hole；22, die cavity；23, interim article putting groove；231, material-putting space；24, forming blocks.
Specific embodiment
Below with reference to examples and drawings, the present invention is described in further detail, but embodiments of the present invention are not only
It is limited to this.
A kind of cold pier extrusion-processing technology of toothed member, in conjunction with Fig. 3 it is found that including following procedure of processing:
Step 1: turned blank is chosen.The blank of selection is the original blank of toothed member, so that molding timing gears are original
The material of blank is able to carry out good control to material.
Step 2: tooth Profile Machining mold is installed to forging and stamping bed.Specific tooth Profile Machining mould structure is tooth Profile Machining
Mold includes upper mold 1 and lower mold 2, and upper mold 1 includes upper mould body 11 and cylindrical type squeezing rod 12.Under lower mold 2 includes
Mould main body 21 and it is internal there is die cavity 22 identical with finished product shape, blank is squeezed to die cavity 22, squeezing rod 12 is by blank
Material is squeezed to die cavity 22, extrusion forming finished product.
When work, original blank is placed in die cavity 22, then upper mould body 11 drives the squeezing rod 12 of cylindrical type downward
It squeezes, original blank is squeezed to die cavity 22, so that original blank is shaped to the shape of timing gears in die cavity 22.Pass through
Extrusion forming mode, processing and forming is high-efficient, and since traditional gear hobbing process can machine away many materials, is squeezed into
Type can save a large amount of raw material.Meanwhile the timing gear that cold extrusion helps to improve the density of timing gears, and produces
The metallographic structure of wheel is more preferable.
Wherein, it is separately installed with guide post 13 in the bottom surface surrounding of upper mould body 11, quantity four in total, lower mold body
It is offered on 21 upper surface and four guide posts, 13 corresponding four pilot holes 211.When upper mould body 11 pushes, lead
It is plugged in pilot hole 211 to 13 activity of column, guide post 13 guides upper mould body 11 to be squeezed along the vertical direction of pilot hole 211
Pressure, so that squeezing more stable.
Such as Fig. 3, the bottom of lower mold body 21 is equipped with interim article putting groove 23, and lower mold body 21 is placed in interim article putting groove 23
It is interior, and the side of lower mold body 21 has material-putting space 231, so that staff can add in convenient place of material-putting space 231
The good product of work, or waste product is placed, it also or is that the scene of placing needs tool to be used.Meanwhile for convenience to damage
Die cavity 22 replaced, bolt is fixedly installed with forming blocks 24 in lower mold body 21, and die cavity 22 is provided in forming blocks 24.
Step 3: original blank is placed in die cavity 22, and keeps original blank that can stablize placement in die cavity 22, just
Processing is pressed down against in squeezing rod 12；
Step 4: the starting downward weight of cold extrusion lathe provides extruding force using the machine tool of auxiliary, drives upper mould body 11
It is moved to the direction close to lower mold body 21, the squeezing rod 12 in upper mould body 11 is inserted into die cavity 22, is placed on die cavity 22
Interior original blank is shaped to the shape of die cavity 22, and straight forming constitutes the shape of timing gears, and one-pass molding is timing gear
Wheel.
Step 5: finished product is taken out.The tool with magnet is used to be taken out in a manner of adsorbing when taking out finished product, In
After taking out article, the iron filings that cold extrusion generates are blown away by tracheae to be cleared up.
Association's statistics are forged and pressed according to China, China's automobile sales volume in 2012 is up to 22,000,000, wherein cold-extruded part about 20
Ten thousand t account for the 5% of forging part.And the U.S. produces cold-extruded part 1,000,000 or more per year, 80% is auto parts, Japanese Toyota 1.8L exhaust
There is 43Kg cold-extruded part in amount car, there are also 35Kg cold extrusion standard component, cold extrusion will definitely replace cutting, be to improve material use
Rate, intensity, precision and reduction manufacturing cost, guarantee dimensional stability, consistency, cold extrusion is strategic turn of manufacturing industry
Become.Gear carries out the traditional handicraft that cutting manufacture is decades, and cutting production can generate various influences to profile accuracy.Than
Such as, the accuracy of manufacture of lathe itself and use the time, the accuracy of manufacture and abrasion of hobboing cutter.The reliability of Fixture designing, work
People's operating process etc. all can be the precision for influencing gear.Practical cold-extrusion technology, first its blank are cold-drawn through overheating, than forging
The even tissue of part, material are improved its density etc. more by squeezing.In heat treatment process, deflection is reduced, mold is used
It to tooth disposal molding, both improved work efficiency, and saved material, and guarantee tooth proportions, the consistency of precision, stability,
It is the leap of quality and quantity.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of cold pier extrusion-processing technology of toothed member, which is characterized in that including following procedure of processing:
S1, turned blank is chosen；
S2, tooth Profile Machining mold is installed to forging and stamping bed；
S3, blank is mounted in processing mold；
S4, the starting downward weight of cold extrusion lathe, the one-pass molding toothed member；
S5, finished product is taken out.
2. the cold pier extrusion-processing technology of a kind of toothed member according to claim 1, it is characterised in that: chosen in step S1
Blank is the original blank of toothed member.
3. the cold pier extrusion-processing technology of a kind of toothed member according to claim 1, it is characterised in that: tooth form adds in step S2
Tool and mould includes upper mold (1) and lower mold (2), and upper mold (1) includes upper mould body (11) and squeezing rod (12), lower mold
(2) include that lower mold body (21) and inside have die cavity (22) identical with finished product shape, blank squeezed on die cavity (22),
Squeezing rod (12) squeezes blank material to die cavity (22), extrusion forming finished product.
4. the cold pier extrusion-processing technology of a kind of toothed member according to claim 3, it is characterised in that: squeezing rod (12) is in circle
Column type.
5. the cold pier extrusion-processing technology of a kind of toothed member according to claim 3, it is characterised in that: in upper mould body (11)
Several guide posts (13) are installed, the corresponding pilot hole (211) with guide post (13) is offered in lower mold body (21), are oriented to
Column (13) activity is plugged in pilot hole (211).
6. the cold pier extrusion-processing technology of a kind of toothed member according to claim 3, it is characterised in that: lower mold body (21)
Bottom is equipped with interim article putting groove (23), and lower mold body (21) is placed in interim article putting groove (23), and the week of lower mold body (21)
Side has material-putting space (231).
7. the cold pier extrusion-processing technology of a kind of toothed member according to claim 3, it is characterised in that: in lower mold body (21)
It is detachably equipped with forming blocks (24), die cavity (22) is provided on forming blocks (24).
8. the cold pier extrusion-processing technology of a kind of toothed member according to claim 1, it is characterised in that: in the S5 take out at
Product use the tool with magnet to be taken out in a manner of adsorbing, and after taking out article, the iron filings that cold extrusion generates pass through gas
Pipe, which is blown away, to be cleared up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810816.3A CN110421109A (en) | 2019-08-29 | 2019-08-29 | A kind of cold pier extrusion-processing technology of toothed member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810816.3A CN110421109A (en) | 2019-08-29 | 2019-08-29 | A kind of cold pier extrusion-processing technology of toothed member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110421109A true CN110421109A (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910810816.3A Pending CN110421109A (en) | 2019-08-29 | 2019-08-29 | A kind of cold pier extrusion-processing technology of toothed member |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202114202U (en) * | 2011-06-16 | 2012-01-18 | 重庆创精温锻成型有限公司 | Tooth profile back taper die of reverse and neutral position shifting gears of vehicle gear box |
| CN202579908U (en) * | 2012-04-13 | 2012-12-05 | 常州市第二齿轮厂有限公司 | Camshaft timing gear |
| CN205341780U (en) * | 2016-02-24 | 2016-06-29 | 重庆创精温锻成型有限公司 | Castellated gear cold extruding die of high accuracy |
| CN107214287A (en) * | 2017-07-12 | 2017-09-29 | 安徽凯密克企业管理咨询有限公司 | A kind of automobile gear cold-extrusion technology |
| CN207325626U (en) * | 2017-09-13 | 2018-05-08 | 重庆文理学院 | A kind of gear cold-extrusion shaping mould |
| KR20180081189A (en) * | 2017-01-05 | 2018-07-16 | 주식회사 세림티앤디 | Non-working safety belt pretensioners development of high-precision cold forging process technology and key component parts |
| JP2018176263A (en) * | 2017-04-21 | 2018-11-15 | 株式会社Ｓｕｂａｒｕ | Fabrication method of forging product and forging product |
-
2019
- 2019-08-29 CN CN201910810816.3A patent/CN110421109A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202114202U (en) * | 2011-06-16 | 2012-01-18 | 重庆创精温锻成型有限公司 | Tooth profile back taper die of reverse and neutral position shifting gears of vehicle gear box |
| CN202579908U (en) * | 2012-04-13 | 2012-12-05 | 常州市第二齿轮厂有限公司 | Camshaft timing gear |
| CN205341780U (en) * | 2016-02-24 | 2016-06-29 | 重庆创精温锻成型有限公司 | Castellated gear cold extruding die of high accuracy |
| KR20180081189A (en) * | 2017-01-05 | 2018-07-16 | 주식회사 세림티앤디 | Non-working safety belt pretensioners development of high-precision cold forging process technology and key component parts |
| JP2018176263A (en) * | 2017-04-21 | 2018-11-15 | 株式会社Ｓｕｂａｒｕ | Fabrication method of forging product and forging product |
| CN107214287A (en) * | 2017-07-12 | 2017-09-29 | 安徽凯密克企业管理咨询有限公司 | A kind of automobile gear cold-extrusion technology |
| CN207325626U (en) * | 2017-09-13 | 2018-05-08 | 重庆文理学院 | A kind of gear cold-extrusion shaping mould |
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Application publication date: 20191108 |