CN105436833B - A kind of precision manufactureing method of external belt rib skin part - Google Patents
A kind of precision manufactureing method of external belt rib skin part Download PDFInfo
- Publication number
- CN105436833B CN105436833B CN201510974959.XA CN201510974959A CN105436833B CN 105436833 B CN105436833 B CN 105436833B CN 201510974959 A CN201510974959 A CN 201510974959A CN 105436833 B CN105436833 B CN 105436833B
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- sheet material
- preforming
- covering
- skin part
- precision
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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
Abstract
The invention belongs to a kind of machining process, and in particular to a kind of precision manufactureing method of external belt rib skin part.It comprises the following steps, the first step：Sheet material is preforming：It is according to stressed-skin construction feature that sheet material is preforming.Second step：The preforming sheet material of laser scanning, and compared with covering, it is ensured that preforming sheet material contains covering；3rd step：Machine adds covering curved inner surface；4th step：Process covering outer surface：Machined curved inner surface is adsorbed using profile-followed vacuum tyre, outer curved surface is processed；5th step：Stabilization processes：The skin part machined is fixed using profile-followed frock and carries out stabilization processes to eliminate cutting stress.It is an advantage of the invention that using the processing method that provides of the present invention, can solve the problem that thin-walled, abnormal shape, external belt rib covering class part manufacturing cycle it is long, the low difficult point of precision.
Description
Technical field
The invention belongs to a kind of machining process, and in particular to a kind of precision manufactureing side of external belt rib skin part
Method, it is applied to the precision manufactureing of Aero-Space external belt rib skin part.
Background technology
At present, frame skin welding class formation is more and more appeared in missile armament, and its covering has thin-walled, different
Type, complicated, the characteristics of required precision is high, manufacture difficulty of processing is very big.
Due to its more complicated design feature and higher required precision, typically added in production using thicker panel machine
Shaping, the sheet material volume not only consumed is big, and the process-cycle is long, simultaneously because the removal amount of metal is larger, causes part to be processed
After deform it is larger, it is difficult to ensure that machining accuracy.
This method is preforming by sheet material using the method for sheet-metal formed from relatively thin sheet material according to design of part feature,
Then the inner mold face without rib is processed, the type face is fitted with vacuum tyre frock, outer mold surface of the processing with rib, so as to subtract
The cutting output of few part, simultaneously as the sheet material selected is relatively thin, metal removal rate is less, reduces the release of internal stress, improves
The machining accuracy of part.
The content of the invention
It is an object of the invention to provide a kind of precision manufactureing method of external belt rib skin part, it can realize using compared with
Light sheet realizes the precision manufactureing of external belt rib skin part.
The present invention is achieved in that a kind of precision manufactureing method of external belt rib skin part, and it includes following step
Suddenly,
The first step：According to skin part design feature and sheet-metal formed precision, the most light sheet needed for calculating, and by sheet material
It is preforming；
Second step：The preforming sheet material of laser scanning, and contrasted with skin part, such as preforming sheet material contains covering zero completely
Part, then can directly determine the machining benchmark of sheet material, can not such as contain completely, then continue to correct sheet material, covered until it contains completely
Skin part；
3rd step：Inner mold face is processed by the sheet fabrication benchmark determined in threedimensional model, it is ensured that surface roughness is higher than
Ra6.3, it is ensured that vacuum tyre absorption is firm；
4th step：The covering inner mold face of machined completion is adsorbed using inner mold face vacuum tyre, its external surface is processed；
5th step：Stabilization processes are carried out using profile-followed frock Clamp blocks after machining, cutting stress is discharged, it is ensured that
The final precision of part.
It is an advantage of the invention that the processing method provided using the present invention, can solve the problem that thin-walled, abnormal shape, external belt rib
The manufacturing cycle of covering class part is long, the low difficult point of precision.
Brief description of the drawings
Fig. 1 is the skin part with outside rib；
Fig. 2 is preforming sheet material；
Fig. 3 is the relative position of covering and preforming sheet material in three-dimensional software；
Fig. 4 is vacuum tyre frock；
Fig. 5 is the profile-followed frock of heat treatment.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples：
A kind of precision manufactureing method of external belt rib skin part.The first step：Sheet material is preforming：According to stressed-skin construction
Feature is preforming by sheet material.Second step：The preforming sheet material of laser scanning, and compared with covering, it is ensured that preforming sheet material, which contains, to be covered
Skin, while determining the machining benchmark of preforming sheet material；3rd step：Machine adds covering curved inner surface；4th step：Process covering appearance
Face：Machined curved inner surface is adsorbed using inner mold face vacuum tyre, outer curved surface is processed；5th step：Stabilization processes：It will process
Into skin part fixed using profile-followed frock and carry out stabilization processes to eliminate cutting stress.
This method key point：
1. preforming sheet material point cloud is scanned using three-dimensional scanning device after sheet material is preforming, and builds physical model, is made
The relative position relation between skin model and sheet material physical model is adjusted with three-dimensional software, until preforming sheet material contains completely
Covering, such as preforming sheet material can not contain skin part, then continue to correct sheet material, until it contains skin part completely.
2. the machining benchmark of preforming sheet material is determined：Relative position in three-dimensional software between covering and preforming sheet material
After relation is adjusted in place, the machining benchmark of preforming sheet material is determined, it is ensured that the posture one when covering posture is with comparing during processing
Cause.
3. profile-followed frock retaining element need to be used during stabilization processes, to reduce the deflection of part in stabilization procedures.
Specific embodiment：
Tested parts are the lower covering in certain model, and the part material is 5A06, and product structure is Inner arc R201mm, wall
Thick 2mm, the outside high 8mm of rib.See Fig. 1.
(1) sheet material is preforming
Sheet metal thickness is 16mm, is pre-formed as Inner arc R199mm, sees Fig. 2.
Principle：Metal plate bending precision of the length in the range of 1m is can be controlled in 2mm, the unilateral reserved overproof amounts of 1mm, it is necessary to
Sheet metal thickness 16mm.
(2) preforming sheet material and covering are contrasted, Fig. 3 is seen
Principle：The relative position relation of adjustment between the two, on the premise of ensuring to contain completely, makes going for two sides as far as possible
It is equal except measuring, it is then determined that the machining benchmark of preforming sheet material.
(3) curved inner surface is processed.
When being cut using rose cutter, it is 0.005 with valley value to set cutting crest.
Principle：, will in the case where process time allows to ensure curved inner surface and the reliable absorption of inner mold face vacuum tyre
Cutter track spacing is tried one's best diminution, to improve the surface roughness of processing.
(4) outer curved surface is processed
Machined curved inner surface is adsorbed using inner mold face vacuum tyre, external belt rib curved surface is processed, sees Fig. 4
(5) stabilization processes
Using profile-followed frock clamping part and with part stabilization processes.See Fig. 5
Principle：Part its internal stress and cutting stress in working angles can cause part deformation, and with profile-followed work
When filling stabilization processes together, it is ensured that part discharges internal stress in the state of constraint, to reduce the deflection of part.
The present invention proposes a kind of for thin-walled, abnormal shape, the precision manufactureing method of external belt rib covering class part.The party
Thin-walled, abnormal shape, the precision manufactureing of external belt rib covering class part can be effectively ensured in method.This intellectual achievement applies to actual production
In solve very big problem, with very strong application prospect.
Claims (1)
1. a kind of precision manufactureing method of external belt rib skin part, it is characterised in that：It comprises the following steps,
The first step：According to skin part design feature and sheet-metal formed precision, the most light sheet needed for calculating, and by sheet material preformation
Type；
Second step：The preforming sheet material of laser scanning, and contrasted with skin part, such as preforming sheet material contains skin part completely,
The machining benchmark of sheet material then can be directly determined, can not such as be contained completely, then continues to correct sheet material, until it contains covering zero completely
Part；
3rd step：Inner mold face is processed by the sheet fabrication benchmark determined in threedimensional model, it is ensured that surface roughness is higher than
Ra6.3, it is ensured that vacuum tyre absorption is firm；
4th step：The covering inner mold face of machined completion is adsorbed using inner mold face vacuum tyre, its external surface is processed；
5th step：Stabilization processes are carried out using profile-followed frock Clamp blocks after machining, cutting stress are discharged, it is ensured that part
Final precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974959.XA CN105436833B (en) | 2015-12-23 | 2015-12-23 | A kind of precision manufactureing method of external belt rib skin part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510974959.XA CN105436833B (en) | 2015-12-23 | 2015-12-23 | A kind of precision manufactureing method of external belt rib skin part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105436833A CN105436833A (en) | 2016-03-30 |
| CN105436833B true CN105436833B (en) | 2017-09-19 |
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| CN201510974959.XA Active CN105436833B (en) | 2015-12-23 | 2015-12-23 | A kind of precision manufactureing method of external belt rib skin part |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106112398A (en) * | 2016-07-14 | 2016-11-16 | 沈阳飞研航空设备有限公司 | The manufacture method of tire on ultra-large type Intelligent vertical hydraulic cold bending machine |
| CN107617771B (en) * | 2016-07-15 | 2019-07-12 | 首都航天机械公司 | A kind of low deformation processing method of large aluminum alloy thin-walled mesh cylinder section |
| CN106216966B (en) * | 2016-09-08 | 2018-06-19 | 四川航天长征装备制造有限公司 | Based on adaptive machining covering high-efficiency machining method |
| CN106881387B (en) * | 2017-03-17 | 2018-11-09 | 北京航星机器制造有限公司 | A kind of aluminum alloy curved stiffener plate hot press forming method |
| CN108326512B (en) * | 2017-12-29 | 2019-12-31 | 山东豪迈机械制造有限公司 | Machining method and machining device for curved surface workpiece |
| CN109079431A (en) * | 2018-07-25 | 2018-12-25 | 滁州市经纬装备科技有限公司 | A kind of vertical gusset processing method |
| CN109894563B (en) * | 2019-03-29 | 2020-12-08 | 北京航星机器制造有限公司 | Integral forming die and method for large stepping latticed high-rib thin plate |
| CN110883239B (en) * | 2019-11-28 | 2021-01-05 | 大连理工大学 | Forming method of large-size curved surface thin-wall metal skin |
| CN111230424B (en) * | 2020-03-16 | 2021-07-09 | 沈阳飞机工业（集团）有限公司 | Method for unifying machining references among various working procedures of large skin |
| CN113714748B (en) * | 2021-10-08 | 2022-05-31 | 中国空气动力研究与发展中心低速空气动力研究所 | Manufacturing method of large wind tunnel contraction section |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605161B1 (en) * | 2005-02-18 | 2006-07-28 | 학교법인 두원학원 | Manufacturing method of piston for compressor |
| CN103586515A (en) * | 2013-11-15 | 2014-02-19 | 中航飞机股份有限公司西安飞机分公司 | Numerically-controlled milling method for skin-covered components |
| CN104476109A (en) * | 2014-09-25 | 2015-04-01 | 北京航星机器制造有限公司 | Skin structure accurate positioning machining method |
| CN104476118A (en) * | 2014-11-03 | 2015-04-01 | 陕西飞机工业（集团）有限公司 | Manufacturing method of airplane chemical milling skin three-dimensional chemical milling sample plate |
| CN104476132B (en) * | 2014-11-26 | 2016-07-06 | 江西洪都航空工业集团有限责任公司 | A kind of aircraft skin manufacturing process |
| CN104972282A (en) * | 2015-07-15 | 2015-10-14 | 江西洪都航空工业集团有限责任公司 | Method for machining aircraft skin part |
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