CN104259771B - A kind of forming technology of automobile engine exhaust system heat shield - Google Patents
A kind of forming technology of automobile engine exhaust system heat shield Download PDFInfo
- Publication number
- CN104259771B CN104259771B CN201410435084.1A CN201410435084A CN104259771B CN 104259771 B CN104259771 B CN 104259771B CN 201410435084 A CN201410435084 A CN 201410435084A CN 104259771 B CN104259771 B CN 104259771B
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- China
- Prior art keywords
- shell
- right half
- left shell
- pipe
- heat shield
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
Abstract
The invention provides a kind of forming technology of automobile engine exhaust system heat shield, the problem of it can solve to shape low brought forming quality, high processing costs using integrally casting at present.It uses Cold Press Working forming technology, its longitudinal centre line by the automobile engine exhaust system heat shield along its circular outlet mouth of pipe is divided into left shell half, right half-shell, the left shell half, right half-shell are carried out respectively stamping then stamping left shell half, right half-shell welding is integral.
Description
Technical field
The present invention relates to the stamping field of the field that shapes of auto parts and components, especially auto parts and components, tool
Body is a kind of forming technology of automobile engine exhaust system heat shield.
Background technology
A kind of automobile engine exhaust system heat shield 1, it is round tubular for rule, sees Fig. 1, its lower end is provided with outlet
The mouth of pipe 2, excircle configuration is provided with the rib 3 of outwardly convex, and side is cylindrical is provided with circular hole 4, current automobile engine to exhaust
System heat shield is mostly shaped by integrally casting, but is due to that the heat shield structure is complicated, so that cause its casting difficult, casting
The problem of causing the heat shield overall appearance of shape of low quality, and there are casting high processing costs.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of forming technology of automobile engine exhaust system heat shield, its energy
The problem of solving to shape low brought forming quality, high processing costs using integrally casting at present.
A kind of forming technology of automobile engine exhaust system heat shield, it is characterised in that：Its use Cold Press Working into
Shape technique, its longitudinal centre line by the automobile engine exhaust system heat shield along its circular outlet mouth of pipe is divided into left half
Shell, right half-shell, the left shell half, right half-shell are carried out respectively it is stamping, then by stamping left shell half, right half-shell weld
It is integral.
It is further characterized by：
The left shell half, the process for stamping and forming of right half-shell first carry out even material integrated punching to the left shell half, right half-shell
Forming, then carries out middle cut by the left shell half being integrally formed on same flitch, right half-shell again and respectively obtains independence
Left shell half, right half-shell, it comprises the following steps successively,
（1）Preform：The left shell half is carried out to flitch first, integrated punching preform, preform are expected by the company of right half-shell
Rib in the left shell half, the excircle configuration of right half-shell and the left shell half, right half-shell excircle configuration, while shaping is described
The preform of left shell half, the outlet opening part of right half-shell；
（2）Shaping：To through the step（1）Flitch after preform carries out stamping processing, by the left shell half, the right side
Rib on half-shell excircle configuration and the left shell half, right half-shell excircle configuration is stamping in place, and completes simultaneously described
Left shell half, the outlet mouth of pipe excircle configuration of right half-shell, the left shell half circular hole position step surface profile shaping in place；
（3）Trimming：To through the step（2）Flitch after stamping carries out the trimming of periphery waste material, and cuts simultaneously
The mouth end of the outlet mouth of pipe of the left shell half and the mouth end of the escape pipe of right half-shell；
（4）Flange：To through the step（3）The flitch of trimming processing carries out the punching press flange of periphery；
（5）Cut：Will be through the step（4）Flitch after punching press flange is thrust from centre, so that be give completely formed
Left shell half, right half-shell；
（6）Punching：The punching of circular hole is carried out in place to left shell half after the shaping.
Further, even material integrated punching forming, the left shell half and right half are carried out to the left shell half, right half-shell
The shaping arranged direction of shell is opposite；
Further, the step is being carried out（2）Shaping and punching processing when, the outlet mouth of pipe of the left shell half, right half
The outlet mouth of pipe of shell is located at flitch middle part side and rushes technical gaps respectively simultaneously；
Further, the step is being carried out（3）When trimming is processed, outlet mouth of pipe two ends and the left side of the left shell half
Half shell connecting corner end, the outlet mouth of pipe two ends of the right half-shell are left with the right half-shell body connecting corner end collapses
Pin compensates angle；
Further, in the step（4）During flange processing, outlet mouth of pipe two ends and the left shell half of the left shell half
Change radius chamfer surface blending is respectively formed between body and between the escape pipe two ends of the right half-shell and the right half-shell body to connect
Connect.
Compared with conventionally employed integrally casting method processing automobile engine exhaust system heat shield, of the invention is beneficial
Effect is：
It is stamping that it uses left shell half, the right half-shell of the method for Cold Press Working respectively to heat shield to carry out, then will punching
The left shell half of pressing formation, right half-shell welding are integral, and it greatly reduces difficulty of processing, and can effectively reduce processing cost；
Its use left shell half, right half-shell integrally connect material it is stamping so that a punching press can shape left shell half, the right side simultaneously
Half-shell, therefore processing efficiency can be greatly improved；
Even material integrated punching forming, the shaping arrangement of left shell half and right half-shell are carried out to the left shell half, right half-shell
In the opposite direction, flitch during punch process is enabled to be pressurized uniformly, so that it is guaranteed that the shaping of left shell half, right half-shell is in place, it is ensured that plus
Working medium amount；
When punch process is formed, the outlet mouth of pipe of left shell half, the outlet mouth of pipe of right half-shell are located at flitch pars intermedia
Position side rushes technical gaps respectively simultaneously, and the outlet mouth of pipe two ends of left shell half are connected with left shell half body when can improve forming
Corner, the outlet mouth of pipe two ends of right half-shell and the mobility of material at the right half-shell body connecting corner, it is ensured that corner exists
It is not easy to crack during shaping, it further ensure that crudy；
When carrying out trimming processing, the outlet mouth of pipe two ends of left shell half and left shell half body connecting corner end, right half-shell
Pin compensation angle of collapsing all is left in outlet mouth of pipe two ends and right half-shell body connecting corner end, can compensate in follow-up flange processing four
There is pin defect of collapsing in individual angle end；
In flange processing, between the outlet mouth of pipe two ends of left shell half and left shell half body and right half-shell escape pipe two
It is respectively formed change radius chamfer surface blending between end and right half-shell body to connect, so as to control the flowing speed of flange section material
Rate, further improves the forming quality of product.
Brief description of the drawings
Fig. 1 is a kind of structural representation for automobile engine exhaust system heat shield that present invention process is processed；
Fig. 2 is a kind of front view structure of the left shell half of the automobile engine exhaust system heat shield added using present invention process
Schematic diagram；
Fig. 3 is Fig. 2 left view structural representation；
Fig. 4 is Fig. 2 right side structural representation；
Fig. 5 is Fig. 2 present invention looks up structural representation；
Fig. 6 is Fig. 2 overlooking the structure diagram；
Fig. 7 is a kind of front view structure of the right half-shell of the automobile engine exhaust system heat shield added using present invention process
Schematic diagram；
Fig. 8 is the shaping schematic diagram of flitch after preform in present invention process；
Fig. 9 for Fig. 8 A-A to schematic diagram；
Figure 10 is the flitch shaping schematic diagram after being shaped in present invention process；
Figure 11 is Figure 10 B-B direction schematic diagram；
Figure 12 is the flitch shaping schematic diagram after trimming in present invention process；
Figure 13 is the flitch shaping schematic diagram after flange in present invention process；
Figure 14 is the flitch shaping schematic diagram after being cut in present invention process；
Figure 15 is left shell half piercing and shaping die schematic diagram in present invention process.
Embodiment
A kind of forming technology of automobile engine exhaust system heat shield, it uses Cold Press Working forming technology, and it will
Longitudinal centre line of the automobile engine exhaust system heat shield along its circular outlet mouth of pipe is divided into left shell half 10, right half-shell
20, left shell half 10, right half-shell 20 are carried out respectively stamping, then stamping left shell half 10, right half-shell 20 are welded into
It is overall.
Wherein left shell half 10, the process for stamping and forming of right half-shell 20 first carry out even expecting one to left shell half 10, right half-shell 20
Stamping processing, and left shell half and right half-shell shaping arranged direction on the contrary, when enabling to punch process flitch be pressurized
Uniformly, so that it is guaranteed that left shell half, right half-shell shape in place, it is ensured that crudy, then it will be integrally formed on same flitch again
Left shell half, right half-shell carry out in the middle of cut respectively obtain independent left shell half 10, right half-shell 20, its successively include following step
Suddenly,
（1）Preform：Left shell half is carried out to flitch first, integrated punching preform is expected by the company of right half-shell, preform left half
The excircle configuration 1011 of shell, the excircle configuration 2011 of right half-shell and rib 1021 on left shell half excircle configuration, outside right half-shell
Rib 2021 on circle contour, while the outlet opening part of the outlet opening part 1031 of preform left shell half, right half-shell
2031, see Fig. 8 and Fig. 9；
（2）Shaping：To through step（1）Flitch after preform carries out stamping processing, by the excircle configuration of left shell half
1012nd, right half-shell excircle configuration 2012 and the rib 1022 on left shell half excircle configuration, the rib on right half-shell excircle configuration
2022 shapings in place, and complete left shell half escape pipe excircle configuration 1032, the outlet mouth of pipe excircle configuration 2032 of right half-shell simultaneously
And left shell half circular hole position step surface profile 1041, and the outlet mouth of pipe, the outlet mouth of pipe of right half-shell in left shell half be located at
Flitch middle part side rushes technical gaps 1051,2051 respectively simultaneously, to improve the outlet mouth of pipe of left shell half during forming
Two ends and 1061, the outlet mouth of pipe two ends of right half-shell at left shell half body connecting corner and at the right half-shell body connecting corner 2061
The mobility of material, it is ensured that corner is not easy to crack in shaping, further ensure that crudy, sees Figure 10 and Figure 11；
（3）Trimming：To through step（2）Flitch after stamping carries out the trimming of periphery waste material, and cuts left half simultaneously
The mouth end 107 of the outlet mouth of pipe of shell and the mouth end 207 of the escape pipe of right half-shell, the outlet mouth of pipe two ends of left shell half during trimming
Pin compensation angle 108 of collapsing, the outlet mouth of pipe two ends of right half-shell is left with left shell half body connecting corner end to be connected and turn with right half-shell body
Pin compensation angle 208 of collapsing is left in angle end, sees Figure 12；In Figure 12,30 be to cut waste knife signal for trimming；
（4）Flange：To through step（3）Flitch after trimming processing carries out the punching press flange of periphery, and causes left shell half
Outlet mouth of pipe two ends and left shell half body between form the escape pipe for becoming radius chamfer surface blending connection 109 and right half-shell
Change radius chamfer surface blending connection 209 is respectively formed between two ends and right half-shell body, Figure 13 is seen；
（5）Cut：Will be through the step（4）Flitch after punching press flange is thrust from centre, so that be give completely formed
Left shell half, right half-shell, are shown in Figure 14；In Figure 14,40 be left shell half, the signal of the cut-off lines of right half-shell；
（6）Punching：The punching for carrying out circular hole 1042 to left shell half after shaping in place, is shown in Figure 15.
Claims (5)
1. a kind of forming technology of automobile engine exhaust system heat shield, it is characterised in that：It uses Cold Press Working to shape
Technique, its longitudinal centre line by the automobile engine exhaust system heat shield along its circular outlet mouth of pipe be divided into left shell half,
Right half-shell, carries out stamping respectively to the left shell half, right half-shell, then stamping left shell half, right half-shell is welded into
It is overall；
The left shell half, the process for stamping and forming of right half-shell first carry out even material integrated punching shaping to the left shell half, right half-shell
Processing, then carries out middle cut by the left shell half being integrally formed on same flitch, right half-shell again and respectively obtains an independent left side
Half-shell, right half-shell, it comprises the following steps successively,
（1）Preform：The left shell half is carried out to flitch first, integrated punching preform is expected by the company of right half-shell, described in preform
Rib in left shell half, the excircle configuration of right half-shell and the left shell half, right half-shell excircle configuration, while shaping described left half
The preform of shell, the outlet opening part of right half-shell；
（2）Shaping：To through the step（1）Flitch after preform carries out stamping processing, by the left shell half, right half-shell
Rib on excircle configuration and the left shell half, right half-shell excircle configuration is stamping in place, and completes described left half simultaneously
Shell, the outlet mouth of pipe excircle configuration of right half-shell, the left shell half circular hole position step surface profile are stamping in place；
（3）Trimming：To through the step（2）Flitch after stamping carries out the trimming of periphery waste material, and cuts simultaneously described
The mouth end (107) of the outlet mouth of pipe of left shell half and the mouth end (207) of the escape pipe of right half-shell；
（4）Flange：To through the step（3）The flitch of trimming processing carries out the punching press flange of periphery；
（5）Cut：Will be through the step（4）Flitch after punching press flange is thrust from centre, so that be give completely formed left half
Shell, right half-shell；
（6）Punching：The punching of circular hole is carried out in place to left shell half after the shaping.
2. a kind of forming technology of automobile engine exhaust system heat shield according to claim 1, it is characterised in that：It is right
The left shell half, right half-shell carry out even material integrated punching forming, the shaping arranged direction phase of the left shell half and right half-shell
Instead.
3. a kind of forming technology of automobile engine exhaust system heat shield according to claim 2, it is characterised in that：
Carry out the step（2）Shaping and punching processing when, the outlet mouth of pipe of the left shell half, the outlet mouth of pipe of right half-shell be located at flitch
Middle part side rushes technical gaps respectively simultaneously.
4. a kind of forming technology of automobile engine exhaust system heat shield according to claim 2, it is characterised in that：
Carry out the step（3）When trimming is processed, the outlet mouth of pipe two ends of the left shell half and the left shell half body connecting corner end,
Pin compensation angle of collapsing is left with the right half-shell body connecting corner end in the outlet mouth of pipe two ends of the right half-shell.
5. a kind of forming technology of automobile engine exhaust system heat shield according to claim 2, it is characterised in that：
The step（4）During flange processing, between the outlet mouth of pipe two ends of the left shell half and the left shell half body and right side half
The surface blending connection of change radius chamfer is respectively formed between the escape pipe two ends of shell and the right half-shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435084.1A CN104259771B (en) | 2014-08-30 | 2014-08-30 | A kind of forming technology of automobile engine exhaust system heat shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435084.1A CN104259771B (en) | 2014-08-30 | 2014-08-30 | A kind of forming technology of automobile engine exhaust system heat shield |
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| Publication Number | Publication Date |
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| CN104259771A CN104259771A (en) | 2015-01-07 |
| CN104259771B true CN104259771B (en) | 2017-09-05 |
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| CN201410435084.1A Active CN104259771B (en) | 2014-08-30 | 2014-08-30 | A kind of forming technology of automobile engine exhaust system heat shield |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104722637A (en) * | 2015-03-31 | 2015-06-24 | 绵阳市川金机械制造有限公司 | Punch forming process of double-layer thermal shield |
| CN105170786B (en) * | 2015-09-22 | 2017-06-06 | 无锡曙光模具有限公司 | The processing method and its processing particular manufacturing craft of inlet manifold |
| CN105689531B (en) * | 2016-03-17 | 2018-05-22 | 无锡曙光模具有限公司 | A kind of processing method of special pipe and its special producing line of processing |
| CN106378373A (en) * | 2016-11-30 | 2017-02-08 | 航天科工哈尔滨风华有限公司 | Processing method and mould for opening-asymmetrical type cover housings |
| CN108067542B (en) * | 2017-12-15 | 2023-06-16 | 无锡曙光模具有限公司 | Machining method and machining production line for automobile air outlet end cone shell |
| CN108194768A (en) * | 2017-12-18 | 2018-06-22 | 无锡曙光模具有限公司 | A kind of auto parts machinery shell and its processing method |
| CN108266254A (en) * | 2018-01-17 | 2018-07-10 | 无锡曙光模具有限公司 | A kind of automobile silencing half-shell and its processing method |
| CN108856492A (en) * | 2018-08-03 | 2018-11-23 | 浙江正鼎汽车零部件有限公司 | heat shield manufacturing method |
| CN109570923A (en) * | 2018-11-30 | 2019-04-05 | 雄邦压铸（南通）有限公司 | A kind of processing technology of automobile engine exhaust system heat shield mounting hole |
| CN112303255B (en) * | 2020-10-26 | 2022-10-18 | 慈溪市中航精密机械设备制造有限公司 | Exhaust butterfly valve for automobile and production process thereof |
| CN113369386A (en) * | 2021-06-22 | 2021-09-10 | 烟台亿众智能科技有限公司 | Preforming processing method for supercharger heat shield |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431645A (en) * | 1974-08-08 | 1976-04-14 | Nissan Motor | Method of forming a vaned element for a hydraulic torque converter |
| CN101435360A (en) * | 2008-12-16 | 2009-05-20 | 奇瑞汽车股份有限公司 | Engine exhaust manifold thermal shield and fixing method thereof |
| CN201963384U (en) * | 2011-04-14 | 2011-09-07 | 重庆长安汽车股份有限公司 | Automobile engine exhaust manifold assembly |
| CN202789034U (en) * | 2012-08-31 | 2013-03-13 | 东风汽车公司 | Catalytic converter heat shield |
| CN203370940U (en) * | 2013-06-19 | 2014-01-01 | 广州大峰精密工业有限公司 | Heat protection shield molding die |
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2014
- 2014-08-30 CN CN201410435084.1A patent/CN104259771B/en active Active
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