CN105081009A - Correction cushion block for large roll-bent skin part - Google Patents
Correction cushion block for large roll-bent skin part Download PDFInfo
- Publication number
- CN105081009A CN105081009A CN201510580570.7A CN201510580570A CN105081009A CN 105081009 A CN105081009 A CN 105081009A CN 201510580570 A CN201510580570 A CN 201510580570A CN 105081009 A CN105081009 A CN 105081009A
- Authority
- CN
- China
- Prior art keywords
- cushion block
- covering
- milling
- skin
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000003491 Skin Anatomy 0.000 title claims abstract description 41
- 238000005452 bending Methods 0.000 claims abstract description 23
- 230000000875 corresponding Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000003801 milling Methods 0.000 claims description 40
- 229910000737 Duralumin Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 238000007665 sagging Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000009966 trimming Methods 0.000 description 3
- 210000000282 Nails Anatomy 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The invention discloses a correction cushion block for a large roll-bent skin part. The correction cushion block for the large roll-bent skin part is characterized in that the cushion block is made of a hard aluminum sheet material according to the structure that a milled step on the inner surface of the skin part sinks, and the thickness of the cushion block is the same as the sinking depth of the step on the inner surface of the part; the shape of the portion, making contact with the sinking portion of the milled step on the inner surface of the skin part, of the cushion block is the same as that of the corresponding portion to which the milled step on the inner surface of the skin part sinks; the other portions are shaped according to the edge line of the skin part. According to the correction cushion block for the large roll-bent skin part, by increasing the stress area of the skin part in the roll-bending correction process, direct contact between the skin part and a rolling shaft is avoided, and the defects of scratches and pressing damage of the part are prevented.
Description
Technical field
The present invention relates to aviation sheet-metal formed field, particularly relate to a kind of large-scale skin part roll bending and correct cushion block.
Background technology
At present, causing producing milling distortion after rolling-bending forming and digital control milling operation the deviation that External Shape and designing requirement occur for eliminating large-scale covering, often adopting the part after to digital control milling to carry out the method for roll bending correction.In traditional roll bending correction process, skin part inner surface directly contacts with the roller bearing of roll bending lathe, and in the process that roller bearing rolls, the position very easily causing skin part to contact with roller bearing scratches, and affects the surface quality of skin part; Simultaneously, when roller bearing rolls through skin part inner surface milling step collapsed position, because skin thickness produces sudden change herein, skin part herein stressed extremely uneven must be caused, roller bearing institute applied pressure concentrates on inner surface milling step collapsed position place, very easily weigh part wounded and that part exterior surface is produced is protruding, and then cause part rejection, this extreme influence product quality of skin part.
Summary of the invention
For solving the problem, the invention provides a kind of large-scale skin part roll bending and correct cushion block, this cushion block can fit together with the skin part sunk through the good inner surface step of milling, in roll bending trimming process, the roll bending fit together with skin part corrects cushion block and covering can be avoided directly to contact with roller bearing, prevent the scuffing that covering produces in roll bending process, and strengthen the lifting surface area of skin part in roll bending trimming process, prevent part from concentrating at the sink stress at position of milling step, improve covering quality.
The present invention is realized by following technical proposals.A kind of large-scale skin part roll bending corrects cushion block, it is characterized in that: to sink structure according to skin part inner surface milling step, duralumin light sheet material is adopted to manufacture cushion block, pad thickness and the accessory inner surface step degree of depth of sinking of sinking is identical, cushion block and the accessory inner surface milling step shape being trapped in corresponding site under the shape of contact site and accessory inner surface milling step of sinking is identical, and the shape at all the other positions presses skin part edge line.
Further preferably, for ensureing that cushion block and covering inner surface can be fitted completely, after laminating, cushion block and covering inner surface milling step keep the distance of 3 millimeters between sinking.
As a modification of the present invention mode, when covering inner surface have multi-stage stairs sink structure time, polylith duralumin light sheet material is adopted to manufacture some cushion blocks, every grade of corresponding one piece of cushion block of step, every thickness of block cushion block and the step corresponding to it degree of depth of sinking is suitable, every block cushion block and the covering inner surface milling step shape being trapped in corresponding site under the shape of contact site and covering inner surface milling step corresponding to it of sinking is identical, the shape at all the other positions presses skin part edge line, adopts the mode of spot welding to be welded into a firm entirety between cushion block at different levels.
Simultaneously for ensureing that cushion block and covering inner surface can be fitted completely, after laminating, every block cushion block and the covering inner surface milling step corresponding to it keep the distance of 3 millimeters between sinking.
As the preferred embodiment of the present invention, cushion block is made the auricle of band pin hole, and position, the aperture of auricle size and pin hole are consistent with the pin hole auricle on covering, pin hole can be adopted to locate when cushion block and covering are fitted.
Large-scale covering roll bending is corrected, the invention has the beneficial effects as follows: increase the lifting surface area of skin part in roll bending trimming process by cushion block, skin part is avoided to contact with the direct of roller bearing, prevent part output from scratching, weighing defect wounded, improve process efficiency and the product quality of the correction of skin part roll bending.
Accompanying drawing explanation
Fig. 1 is that large-scale covering step sink structure chart.
Fig. 2 is that large-scale covering step sink structure A-A sectional view.
Fig. 3 is the schematic diagram that large-scale covering roll bending corrects cushion block.
In figure: 1, covering 6mm thickness area 2, covering 3.6mm thickness area 3, covering 1.8mm thickness area 4, covering locator tabs 5, alignment pin nail 6, cover edges line S1, skin part A1,1.8mm thickness cushion block A2,2.4mm thickness cushion block.
Detailed description of the invention
Fig. 1 and Fig. 2 shows a kind of large-scale covering milling step and to sink structure, it comprises two-stage milling step, is divided into the milling step between covering 6mm thickness area 1 and covering 3.6mm thickness area 2, milling step between covering 3.6mm thickness area 2 and covering 1.8mm thickness area 3, is also provided with covering locator tabs 4 and alignment pin nail 5.2 pieces of LY12-CZ duralumin light sheet materials are adopted to manufacture two pieces of cushion blocks (1.8mm thickness cushion block A1,2.4mm thickness cushion block A2), the corresponding 1.8mm thickness cushion block A1 of one-level milling step (the milling step between covering 3.6mm thickness area 2 with covering 1.8mm thickness area 3), 1.8mm thickness cushion block A1 thickness and the one-level milling step degree of depth of sinking is suitable, the edge shape of 1.8mm thickness cushion block A1 is identical with the shape being trapped in corresponding site under one-level milling step, and the shape at all the other positions presses cover edges line 6; The corresponding 2.4mm thickness cushion block A2 of secondary milling step (the milling step between covering 6mm thickness area 1 with covering 3.6mm thickness area 2), 2.4mm thickness cushion block A2 thickness and the two stage steps degree of depth of sinking is suitable, the edge shape of 2.4mm thickness cushion block A2 is identical with the shape being trapped in corresponding site under secondary milling step, the shape at all the other positions is pressed between cover edges line 6,1.8mm thickness cushion block A1 and 2.4mm thickness cushion block A2 cushion block and is adopted the mode of spot welding to be welded into a firm entirety.Simultaneously for ensureing that cushion block and covering inner surface can be fitted completely, between every block cushion block and the covering inner surface milling step corresponding to it sink, keep the distance of 3 millimeters.Meanwhile, cushion block is made the auricle of band pin hole, and position, the aperture of auricle size and pin hole are consistent with the pin hole auricle on covering, pin hole can be adopted to locate when cushion block and covering are fitted.
Above embodiment for skin part there is secondary milling step to sink structure, other one-level milling steps structure or multistage milling step structural skin part that sink that sink also can make roll bending in the same way and corrects cushion block.
Claims (5)
1. one kind large-scale skin part roll bending corrects cushion block, it is characterized in that: to sink structure according to skin part inner surface milling step, duralumin light sheet material is adopted to manufacture cushion block, pad thickness and the accessory inner surface milling step degree of depth of sinking is identical, cushion block and the covering inner surface milling step shape being trapped in corresponding site under the shape of contact site and covering inner surface milling step of sinking is identical, and the shape at all the other positions presses skin part edge line.
2. large-scale skin part roll bending according to claim 1 corrects cushion block, it is characterized in that: after cushion block and covering inner surface are fitted, and maintains a certain distance between its edge and corresponding site covering inner surface milling step sink.
3. large-scale skin part roll bending according to claim 1 corrects cushion block, it is characterized in that: when covering inner surface have multistage milling step sink structure time, polylith duralumin light sheet material is adopted to manufacture some cushion blocks, every grade of corresponding one piece of cushion block of milling step, the thickness of every block cushion block and the milling step corresponding to it degree of depth of sinking is suitable, every block cushion block and the covering inner surface milling step shape being trapped in corresponding site under the shape of contact site and covering inner surface milling step corresponding to it of sinking is identical, the shape at all the other positions presses skin part edge line, the mode of spot welding is adopted to be welded into a firm entirety between cushion block at different levels.
4. large-scale skin part roll bending according to claim 3 corrects cushion block, it is characterized in that: when each piece of cushion block is by after order fit with covering inner surface up and down, maintain a certain distance between every block cushion block edge and the covering inner surface milling step corresponding to it are sagging.
5. the large-scale skin part roll bending according to claim 1 or 3 corrects cushion block, it is characterized in that: the auricle making band pin hole on cushion block, position, the aperture of auricle size and pin hole to consistent, can adopt pin hole to locate when cushion block and covering are fitted with the pin hole auricle on covering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510580570.7A CN105081009A (en) | 2015-09-14 | 2015-09-14 | Correction cushion block for large roll-bent skin part |
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| CN201510580570.7A CN105081009A (en) | 2015-09-14 | 2015-09-14 | Correction cushion block for large roll-bent skin part |
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Application publication date: 20151125 |