CN109530764A - A kind of sawtooth class aircraft skin clamping and numerical control shape milling method - Google Patents
A kind of sawtooth class aircraft skin clamping and numerical control shape milling method Download PDFInfo
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- CN109530764A CN109530764A CN201811498202.8A CN201811498202A CN109530764A CN 109530764 A CN109530764 A CN 109530764A CN 201811498202 A CN201811498202 A CN 201811498202A CN 109530764 A CN109530764 A CN 109530764A
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- milling
- floating holder
- skin part
- numerical control
- skin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The present invention relates to a kind of sawtooth class aircraft skin clampings and numerical control shape milling method, belong to aircraft skin clamping and numerical control shape milling technology, belong to aero-manufacturing technology field.This method comprises the following steps: removing the first floating holder and the second floating holder when skin part is pull-up, the shearing of blank is carried out after skin part is pull-up, drill out covering location hole, then it is successively clamped after skin part being positioned on pulling die with the first floating holder and the second floating holder, the milling of numerical control shape is carried out to skin part on improved pull-up die craft equipment on CNC milling machine after clamping, to vibrate after preventing skin part milling, by skin part, there are thickness not millings, milling, which finishes, removes skin part, and pincers worker carries out deburring.
Description
Technical field
The present invention relates to a kind of sawtooth class aircraft skin clamping and numerical control shape milling method, belong to aircraft skin clamping and
Numerical control shape milling technology, belongs to aero-manufacturing technology field.
Background technique
Skin part changes greatly as the key part for constituting Aerodynamic Configuration of Aireraft, complex contour, size range, rigidity
It is small.Requirement of the modern aircraft product to the sheet metal component accuracy of manufacture, which is more than, to be bonded, and mustn't tap forming (such as civil aircraft metal plate
Part), there are stable form accuracy, surface quality and performance state.China next generation military secret product need stealthy due to structure
It wants, zigzag covering opposite joint requires skin part control errors to further decrease, and no surplus mounting technology is to skin part system
Manufacturing accuracy proposes very high requirement.That is Digital manufacturing technology, sharpest edges are exactly the transmitting by digital quantity, guarantee to produce
Product are come out with being processed closest to ideal state, and machining accuracy is high.Can accurately, comprehensively it be reflected by digital quantity processing
The accuracy of manufacture of airplane parts of new generation, and quantization record can be carried out to its foozle, for further changing for properties of product
Into offer scientific basis.
The shape of covering is all worker's hand by being fixed on edger using traditional covering contour machining at this stage at present
Work operates cutting equipment and carries out trimming according to template, and labor intensity is big, and trimming precision is low, and cuts out as skin part system
The critical process made, processing precision direct influence to subsequent assembly precision.Digital control milling processes skin shape profile at present
When, appearance major problem is that be on the one hand that the easy flutter of covering and overlap can not adsorb, and milling tooling and technological parameter
Relative complex, the requirement height to technologist is designed, lacks corresponding technique guidance specification etc. and is difficult to ensure that skin part profile adds
The stability and production efficiency of work.It on the other hand is that fixture design resource is not managed effectively, clamped position relies on personal
Experience, supported in practice using intensive auxiliary clamp etc., although ensure that processing quality, guard, cumbersome tooling mistake
Journey but greatly reduces processing efficiency, to improve processing cost.
Therefore, to improve component assembly efficiency and shortening the Aircraft Production manufacturing cycle, External Shape accuracy and shape are improved
Shape size and raising production work efficiency, meet the manufacture demand of fuselage part.Invent a kind of sawtooth class aircraft skin clamping and
Numerical control shape milling technology is for solving the problems, such as such.
Summary of the invention
The defects of present invention is low for part milling and trimming precision, and labor intensity is big, low efficiency, provides one
Kind sawtooth class aircraft skin clamping and numerical control shape milling method, it is therefore intended that using new numerical control shape milling technology for solving
The flutter and phenomenon certainly occurred during milling shape；On the other hand design, manufacture special fixture solution part positioning repeat, accidentally
Inaccuracy problem caused by difference is accumulative etc..Such skin part numerical control shape milling technical specification is formed, is improved efficiency.
The present invention to achieve the goals above, adopts the following technical scheme that
A kind of sawtooth class aircraft skin clamping and numerical control shape milling method, this method comprises the following steps:
First floating holder and the second floating holder are removed when skin part is pull-up, carry out cutting for blank after skin part is pull-up
It cuts, drills out covering location hole, pressed from both sides after then positioning skin part on pulling die with the first floating holder and the second activity
Tool is successively clamped, and carries out numerical control shape to skin part on improved pull-up die craft equipment on CNC milling machine after clamping
Milling, to vibrate after preventing skin part milling, by skin part there are thickness not milling, milling, which finishes, removes skin part,
Pincers worker carries out deburring.
Further, wherein milling sequence are as follows:
Milling is carried out after first clamping skin part using the first floating holder, removes the first floating holder after to be done, then
Milling is carried out after second floating holder is clamped skin part, until completing the final milling to skin part shape, finally
Deburring is carried out, process is completed.
Further, milling surplus is stayed in the shearing for carrying out blank after skin part is pull-up.
Further, the quantity of covering location hole is 2.
Further, the first floating holder or the second floating holder are made of 2 bolts and a bolt cushion block, and first is living
Dynamic fixture and the second floating holder are connected and fixed by threaded hole.
Further, the first floating holder and the second floating holder are spaced each other and uniformly arrange.
Beneficial effects of the present invention:
For the features such as chatter phenomenon, machining accuracy are low and efficiency is slower is generated during previous skin part digital control milling, lead to
It crosses the invention and reaches simplified covering processing process, significantly improve covering production efficiency and processing quality and save mold system
This is caused, skin part is applicable to and is produced and carried out in batches technological achievement popularization.
Detailed description of the invention
Fig. 1 is structure auger shell pit and pin hole structural schematic diagram of the invention；
Fig. 2 is pull-up die craft equipment schematic diagram of the invention；
Fig. 3 is the first floating holder of the invention and the second floating holder structural schematic diagram.
Specific embodiment
The present invention will be described in detail for connection with figures below: a kind of sawtooth class aircraft skin clamping and numerical control shape milling
Method, this method comprises the following steps:
First floating holder 4 and the second floating holder 5 are removed when skin part 2 is pull-up, carry out blank after skin part 2 is pull-up
Shearing, covering location hole 1 is drilled out, with the first floating holder 4 and after then positioning skin part 2 on pulling die 3
Two floating holders 5 are successively clamped, after clamping on CNC milling machine on improved pull-up die craft equipment to skin part 2 into
Line number control shape milling, to vibrate after preventing 2 milling of skin part, by skin part 2 there are thickness not milling, milling, which finishes, to be taken
Lower skin part 2, pincers worker carry out deburring.
Wherein milling sequence are as follows:
Milling is carried out after first clamping skin part 2 using the first floating holder 4, removes the first floating holder 4 after to be done,
Milling is carried out after the second floating holder 5 is clamped skin part 2 again, until the final milling to 2 shape of skin part is completed,
Deburring is finally carried out, process is completed.
Milling surplus is stayed in the shearing for carrying out blank after skin part 2 is pull-up.
The quantity of covering location hole 1 is 2.
First floating holder 4 or the second floating holder 5 are made of 2 bolts 6 and a bolt cushion block 7, the first activity folder
Tool 4 and the second floating holder 5 are connected and fixed by threaded hole 8.
First floating holder 4 and the second floating holder 5 are spaced each other and uniformly arrange.
Sawtooth class aircraft skin clamping and numerical control shape milling technology are primarily to solve large-scale curved skin part number
It controls in shape milling and forming and realizes the problem of multiple processes are completed with one set of die tooling.Wherein equipment is mainly by two parts group
At: former pull-up mould and design, manufacturing activities fixture after secondary transformation.Former pull-up mould is to drill out illiteracy in former pull-up mould after secondary transformation
Skin location hole, floating holder are then used for positioning and fixture effect to part.
Wherein anti-flutter device is increase floating holder (shown in Fig. 3), wherein activity in covering shaping dies tooling
Fixture is uniformly arranged, and can suitably be reduced in part edge floating holder distance and more preferably be clamped and position convenient for part.
During part stretch forming, part is formed after floating holder is removed, after skin part has shaped,
After floating holder Clamp blocks, trimming and milling work are carried out to part zone using distribution according to part curved surface feature,
Repeated work is then carried out, until External Shape milling terminates.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of sawtooth class aircraft skin clamping and numerical control shape milling method, it is characterised in that this method comprises the following steps:
First floating holder (4) and the second floating holder (5) are removed when skin part (2) is pull-up, after skin part (2) is pull-up
The shearing for carrying out blank, drills out covering location hole (1), with first after then positioning skin part (2) on pulling die (3)
Floating holder (4) and the second floating holder (5) are successively clamped, in improved pull-up die worker on CNC milling machine after clamping
It loads onto and the milling of numerical control shape is carried out to skin part (2), to vibrate after preventing skin part (2) milling, skin part (2) is stayed
There is thickness not milling, milling, which finishes, removes skin part (2), and pincers worker carries out deburring.
2. sawtooth class aircraft skin clamping according to claim 1 and numerical control shape milling method, which is characterized in that wherein
Milling sequence are as follows:
First using the first floating holder (4) will skin part (2) clamp after carry out milling, it is to be done after by the first floating holder
(4) it removes, then carries out milling after the second floating holder (5) is clamped skin part (2), until completing to skin part (2)
The final milling of shape finally carries out deburring, completes process.
3. sawtooth class aircraft skin clamping according to claim 1 and numerical control shape milling method, it is characterised in that: covering
Milling surplus is stayed in the shearing for carrying out blank after part (2) is pull-up.
4. sawtooth class aircraft skin clamping according to claim 1 and numerical control shape milling method, it is characterised in that: covering
The quantity of location hole (1) is 2.
5. sawtooth class aircraft skin clamping according to claim 1 and numerical control shape milling method, it is characterised in that: first
Floating holder (4) or the second floating holder (5) are made of 2 bolts (6) and a bolt cushion block (7), the first floating holder (4)
It is connected and fixed with the second floating holder (5) by threaded hole (8).
6. sawtooth class aircraft skin clamping according to claim 1 and numerical control shape milling method, it is characterised in that: first
Floating holder (4) and the second floating holder (5) are spaced each other and uniformly arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498202.8A CN109530764B (en) | 2018-12-07 | 2018-12-07 | Sawtooth aircraft skin clamping and numerical control appearance milling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811498202.8A CN109530764B (en) | 2018-12-07 | 2018-12-07 | Sawtooth aircraft skin clamping and numerical control appearance milling method |
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| Publication Number | Publication Date |
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| CN109530764A true CN109530764A (en) | 2019-03-29 |
| CN109530764B CN109530764B (en) | 2021-07-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112371846A (en) * | 2020-10-22 | 2021-02-19 | 中国航发贵州黎阳航空动力有限公司 | Multifunctional skin stretch-forming die and stretch-forming method |
| CN112536607A (en) * | 2020-11-17 | 2021-03-23 | 西安飞机工业（集团）有限责任公司 | Combined tool for skin stretch forming and numerical control milling and use method |
| CN114193159A (en) * | 2021-12-08 | 2022-03-18 | 北京星航机电装备有限公司 | Processing method of inorganic phenolic aerogel opening cover structure |
| CN115055975A (en) * | 2022-06-29 | 2022-09-16 | 浙江西子势必锐航空工业有限公司 | Machining process method and machining device for aircraft seat supporting plate |
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| CN2736099Y (en) * | 2004-11-04 | 2005-10-26 | 沈阳飞机工业（集团）有限公司 | Die for drawing, milling and cutting |
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| CN102133655A (en) * | 2010-12-28 | 2011-07-27 | 江西昌河航空工业有限公司 | Method for processing aluminum alloy ultrathin slant shim part |
| CN104259774A (en) * | 2014-09-09 | 2015-01-07 | 黄河科技学院 | Plane wing titanium alloy thin-wall web efficient numerical control machining technology |
| CN107570628A (en) * | 2017-09-18 | 2018-01-12 | 沈阳飞机工业（集团）有限公司 | Crotch class aircraft skin product shaping frock and forming technology |
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Patent Citations (5)
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| CN2736099Y (en) * | 2004-11-04 | 2005-10-26 | 沈阳飞机工业（集团）有限公司 | Die for drawing, milling and cutting |
| CN101733453A (en) * | 2008-11-21 | 2010-06-16 | 成都飞机工业（集团）有限责任公司 | Numerical control part milling processing clamping method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112371846A (en) * | 2020-10-22 | 2021-02-19 | 中国航发贵州黎阳航空动力有限公司 | Multifunctional skin stretch-forming die and stretch-forming method |
| CN112371846B (en) * | 2020-10-22 | 2022-05-10 | 中国航发贵州黎阳航空动力有限公司 | Multifunctional skin stretch-forming die and stretch-forming method |
| CN112536607A (en) * | 2020-11-17 | 2021-03-23 | 西安飞机工业（集团）有限责任公司 | Combined tool for skin stretch forming and numerical control milling and use method |
| CN114193159A (en) * | 2021-12-08 | 2022-03-18 | 北京星航机电装备有限公司 | Processing method of inorganic phenolic aerogel opening cover structure |
| CN115055975A (en) * | 2022-06-29 | 2022-09-16 | 浙江西子势必锐航空工业有限公司 | Machining process method and machining device for aircraft seat supporting plate |
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| Publication number | Publication date |
|---|---|
| CN109530764B (en) | 2021-07-30 |
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