CN106392501A - Machining method for streamline thin-wall metal support plate - Google Patents
Machining method for streamline thin-wall metal support plate Download PDFInfo
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- CN106392501A CN106392501A CN201611118350.3A CN201611118350A CN106392501A CN 106392501 A CN106392501 A CN 106392501A CN 201611118350 A CN201611118350 A CN 201611118350A CN 106392501 A CN106392501 A CN 106392501A
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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
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Abstract
The invention discloses a machining method for a streamline thin-wall metal support plate. Firstly, a plate is shore to form a swallow-tail form workblank with positioning grooves in the upper end and the lower end; secondly, the positioning grooves in the upper end and the lower end are used for positioning, a stamping device is used for stamping the plate plane so as to enable the edges of the upper end and the lower end to be bent, deformation of the position between the upper end and the lower end meets an unfolded semi-finished product with the part profile requirement, and an included angle is formed between profile datum lines on the two sides; thirdly, the semi-finished product is bent, and the tail end is welded for connection; and finally the semi-finished product is subject to shape correction. According to the machining method, part deformation is carried out step by step, the part profile deformation is sufficient, the profile is stable, the size accuracy is high, and the turnup face edges are free of cracks; and hydraulic equipment is used for machining, so that the part machining efficiency is improved, and the quality problem caused by manual metal plate repair by tapping is solved.
Description
Technical field
The present invention relates to thick for the material high-temperature alloy sheet material less than 1.5mm to be processed into the process of streamlined support plate, belong to
In metal plate punching technical field.
Background technology
Streamlined support plate commonly uses in the structure design needing air current flow passage, is used for even in axial flow channels
Connect the support of subsurface it is ensured that the circulation area demand of passage, be used for supporting in circular passage between the radial direction of surfaces externally and internally
Gap, the effect played splitting streams and ensure uniform flow passage, under the working environment of high velocity air, a front edge of board requires circle
Sliding, type face streamlined also to be remained is to reduce the flow losses of resistance and air-flow, in some special constructions, between support plate
Passage also will keep the functional requirement of the changes of section in pneumatic, so, the physical dimension of support plate, intensity and stability are to protect
The key element of card component operation performance.
In the provided with internal duct and external duct annular groove in aero-engine inlet casing, turbine bearing case and afterburning diffuser casing
Generally all assemble 8 to 12 months streamlined support plates, support plate is divided into the support plate with bushing with without bushing, and support plate is essentially all use
Argon arc welding is directly welded or is welded on inside and outside casing by support plate bushing, also will ensure that certain space is used in an intralamellar part
The pipeline of the logical oil of assembling.Support plate section is the raised streamlined type face in both sides, and the type face of such part is in sheet metal structural technique class
Shallow deformation molding structure is belonged to, the processing of this sheet metal components is typically dependence type tire using manual percussion deformation, topmost in type
Problem is that the face resilience of part type is big, and deflection deficiency leads to the molding surface size of part to be difficult to reach the design requirement of product.
In order to reduce the quantity of weld seam in some engines, by support plate bushing design on support plate, such support plate is not only
There is shallow deformation, end face also requires the flange of certain altitude to deform, and this kind of support plate increased technology difficulty again, so, zero
Finally usually main body machined surface profile deformation deficiency in part, and surface profile is overproof, and end face flange deflection is all larger, frequently results in
Crackle in edge, therefore, is usually constructed with the technical conditions allowing repair welding crackle during product design.
The part of this design structure of streamlined support plate is using very early in aircraft engine parts, in view of support plate
Front deformation is difficult to stable, geomery and the technological difficulties such as flange deflection is excessive, and a board machining process of existing type is also
Base oneself upon and tap shaping in panel beating.Manual percussion is molded the deformation of the sheet material that can progressively extend, and makes full use of the plasticity of sheet material, can be
The ductile material of limits reaches very big deformation effect, and its technique deficiency is that part working (machining) efficiency is low, and labor strength is big,
And, technical requirements height is tapped to the panel beating of workman, so, the cost of part processing is also very high, particularly in large batch of feelings
Under condition, its technique deficiency is particularly evident.
The manual processing method of support plate processing is had by means of the pincers worker fixture in hinge-type two sides banding pattern face, clamp central
One core, has the arc-shaped face meeting support plate part side in the both ends of the surface of fixture.First, the part shape chi according to support plate
Very little, shear plate, be then in 30～40 ° with a simple type block bent plate with groove, plate after bending is gone
Stress is heat-treated, erosion removal surface oxide layer, polishes edge fit to be welded, and woollen is loaded in die cavity in hinge-type fixture, then will
Strike and repair the position loading sheet material center with core percussion method, by sheet material to die cavity inner mold face, make sheet material produce certain deformation,
Then strike the flange repairing support plate import and export end face it is ensured that being fitted with type tire in sheet material flange face, gap is not more than 0.8.
Again sheet material and core are taken out from die cavity, are placed on workbench, tap material fit with core model face it is ensured that
Gap is not more than 0.8, finally loads plate in hinge-type die cavity again, taps flange part, reinstall core to plate center,
Extrusion plate laminating mold cavity surface, is so repeated several times, and checks that plate and the patch gap in clamp type face are not more than 0.8, completes to prop up
The shaping work of plate.
Another kind of processing of support plate processing is using a set of swaging die device, and its primary structure is a core, up and down
Type block, has in the front/rear end of type block and meets the consistent shape facility of parts flanged-edge shape.The processing technology of part is to adopt one
The bending of block sheet material is V-shaped, core is loaded inside sheet material, is suppressed using mo(u)ld bottom half block on this mould, because part is under bending
Deformation, and deflection is less, typically can be only done the 40～70% of type face requirement, two sides resilience is very big, and end face does not have flange, remaining
Lower workload fully relies on manual striking and repaiies subject type face and fit with core, by the upper and lower module of loading of the core with part, then uses
Manual percussion support plate both ends of the surface material, until the two ends of the upper mo(u)ld bottom half block of sheet material two ends laminating, completes the type face processing work of support plate,
The groundwork amount of this technique is still on manual panel beating.
Content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of processing method of Streamlined thin-wall metallic implants, using liquid
The pressure equipment processing band streamlined support plate of flange, manual panel beating is changed into punch forming processing, overcomes manual panel beating work
Amount is big, and plastic deformation is not enough, and dimensional accuracy is not high and the low defect of working (machining) efficiency.
The present invention be based on sheet material plastic deformation it is contemplated that closing streamlined support plate little in type face cavity size,
Profile forms are gentle, and under integrality, sheet metal is difficult to fully produce plastic deformation, leads to resilience after the processing of part
Very big, type face is difficult to obtain required shape.Then, launched to have a certain degree in the type face of support plate two sides by the present invention,
Adopt arc transition to connect at the switching in type face, and design the diameter dimension of connecting arc, according to part type face expansion shape
Make a special-shaped support plate sheet blank, in woollen upper and lower end Design Orientation (recessed) groove, will with the shaped device with flanging
Plate stretch becomes the shallow deformation support plate with flange to launch part, and the main body of part is sufficiently moulded because creating in decompressor
Property deformation, thus ensure that the molding surface size of part, flange part also completes main deflection and requires, connecting arc R with
The head blend radius of support plate keep certain position relationship, provide accurate position location for follow-up bending.
Then using the connecting arc R of part as positioning datum, the head using craft or bending apparatus curved carrier plate turns
Connect circular arc R, in the presence of bending apparatus type face, fulcrum body closes up formation support plate around end rotation, two sides main body to part
Closed state.
Finally weld the afterbody of support plate, make the overall structure that support plate is in closing, using the school pattern tool correcting zero with core
The subject type face of part and the shape of flange, thus realize shaping and the flange of part.
Technical scheme is as follows：
A kind of processing method of Streamlined thin-wall metallic implants, comprises the following steps：
Step one, plate shears are cut into the swallow-tail form blank with locating slot for the upper/lower terminal；
Plate plane, with the locating slot positioning of upper/lower terminal, is pressed into upper/lower terminal using decompressor by step 2
Curved edge, deformation between upper/lower terminal meets the semi-finished product that a template face requires, and deformation between described upper/lower terminal meets
Propping up template face requires part to include arranged on left and right sides type face, and arranged on left and right sides type is connected by connecting arc R between face, and left and right
The datum line in both sides type face has an angle；
Step 3, is curved to left and right type face with connecting arc R for positioning datum, then by left and right type face after bending
Tail end is weldingly connected；
Step 4, correction template face and curved edge flange.
In described step 2, the datum line angular range in arranged on left and right sides type face is 90 °～150 °.
In described step 2, the radius of connecting arc R is more than support plate head radius.
In described step 2, the arc length of connecting arc R is consistent with support plate head arc length (equal).
In described step 2, arranged on left and right sides type face is connected by connecting arc R and becomes tangent state (in other words, that is, to exist
In one section, connecting arc R is tangent with the section line in left and right type face respectively).
In described step 2, the radius span of connecting arc R is 5～20mm.
In described step 3, support plate tail end adopts argon arc welding to weld.
Positioned with the locating slot of upper/lower terminal in step 2, using decompressor by plate plane die mould, positioned with two
Centered on groove, two edges flanging before and after sheet material is bent, it is compressing that part type surface state pressed by the sheet material of the right and left, left right model
The datum line in face semi-finished product at an angle, this semi-finished product is the deployed condition in part left right model face；
As a kind of selection of decompressor, punch-forming mold is made up of upper and lower two parts, and part of the upper die includes
Template, upper module, part of the lower die includes lower module, die and lower template, and upper and lower mould is positioned by guide pillar guide pin bushing, by plate during work
Material elongated slot is positioned on the alignment pin of die, hydraulic press push rod jack-up lower module, and till contact sheet material, part of the upper die is in liquid
Move downward in the presence of press upper mounting plate, by plate compact to lower module upper surface, then part of the upper die and sheet material and under
Module is moved downwardly together, and sheet edge gets into the gap of upper module and die, forms the flange of support plate, and sheet material intermediate host exists
It is squeezed into fairshaped type face up and down between model face.
In step 3, as a kind of optional bending apparatus, bending mould is made up of upper and lower two parts, and part of the upper die is
Snake core mould, connects bearing forms, and part of the lower die is made up of two pieces of left and right location-plate and center curvature lower module, and upper and lower mould passes through
Guide pillar guide pin bushing positions.
During work, semi-finished product to be bent are placed on location-plate, part of the upper die moves down with hydraulic press upper mounting plate, half
Fabricated part is pressed between the center curvature lower module in the middle of location-plate in the presence of snake core mould, until the lower mould of bending is attached to
Lower template makes sheet material brake forming, and upper mould is opened, and part moves with snake core mould, departs from part of the lower die, finally by part from curved
One end of bent core is released, and completes BENDING PROCESS.
In step 4, as a kind of optional flange corrector, flange Correction Die is mainly by upper and lower and left and right four
Individual part composition.
Part of the upper die includes cope match-plate pattern, convex mould base, and upper module etc. forms, and part of the lower die is by lower template, load frame, lower module
With locating core mould composition, left and right tiltedly carve channel profile correcting block for band.Upper and lower mould is positioned by guide pillar guide pin bushing.
Upper and lower mold open during work, separately, hydraulic press push rod jack-up lower module, to certain altitude, will weld left and right type block
Central of the parts re-entrant portion after connecing is inserted on the positioning core of lower mould, and part of the upper die moves down with upper mounting plate, and mo(u)ld top half block is by zero
Move down on part press-in core and with mo(u)ld top half block.Left and right type face correcting block in the presence of the oblique wedge of upper mould from both sides to
Middle mobile, after upper module goes downwards to certain position, part is sticked and is expressed to outside core and remains stationary as by type face, and upper mould continues
Continuous descending, the flange part of part is extruded on the upper and lower surface of left and right correcting block upper and lower module, thus realizing part correction
Flange and the function of main body streamline surface；During unlatching, upper module moves upwards, and left and right correcting block moves to both sides respectively, lathe
Push rod mo(u)ld bottom half block is ejected upwards, make part depart from positioning core, take out part complete correction work.
The present invention utilizes the process characteristic of sheet-metal formed, with drawing and forming mode, first launches part, in deployed condition
This part is difficult to be molded most, the big subject type face of resilience is molded by the way of die mould, allows sheet material produce sufficient plasticity and become
Shape, to realize the type facial disfigurement of part and to ensure dimensionally stable, solves the problems, such as part molding surface size precision, routs up two ends simultaneously
The partial shape in face, the deformation behaviour of support plate head circular arc at the change design before and after using sheet metal to deform during shaping, and
The linear dimension relation that when taking into full account follow-up bending, left and right type face and connecting arc R meet is arranging between expansion shape
Distance, finally determines the global shape of shaping flange, and, not produce based on obvious flow harden deformation, size is big for connecting arc R
In the R value of product (support plate) head, both sides are propped up template face and are connected and become tangent state by connecting arc R, the arc length of circular arc R with
The head switching arc length of former support plate is consistent, and error in length is not more than 0.5mm.
Distance between left and right two lobe support plates, to be determined with the connecting arc R of setting and arc length, according to support plate actual switching R
Situation determining, typically between R5 to R20, simultaneously for being conducive to being molded flange, between the support plate of both sides between 90 ° to 150 ° of angle,
Finally determine the global shape of shaping flange, then, the plate benging with flange type face welds two ends, reuses including core
In mould, the school type moulds of industrial equipment of askew type block, in the presence of equipment, the subject type face of correction support plate both sides, meanwhile, compacting school type
The flange shape of support plate end face is so as to meet the conical surface geomery of product requirement.Said method not only can guarantee that type face is molded
Stable, and flange effect also can be more satisfactory, completely on pressing equipment and frock, production efficiency is high for whole work flow, plus
Work cost is significantly reduced, and is particularly suitable for situation about producing in batches.
The present invention is the feature producing plastic deformation with high alloy sheet material under pressure, in the shaping of special construction
In the presence of module in device, carry out the deformation of part step by step, make part type facial disfigurement fully, type face is stable, dimensional accuracy is high,
And the edge in flange face occurs without crackle, is processed using hydraulic test, improve the efficiency of part processing, solve artificial
Panel beating strikes repaiies the quality problems causing.
Brief description
Fig. 1 is the generalized section of bearing case；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the blank material figure with locating slot；
Fig. 4 is through shaping the semi-finished product unfolding state figure processing；
Fig. 5 is the sectional view of Fig. 4；
Fig. 6 is blank bent state diagram；
Fig. 7 is diel schematic diagram；
Fig. 8 is bending mould schematic diagram；
Fig. 9 is the left view of Fig. 8；
Figure 10 is flange Correction Die structural representation；
Figure 11 is the plate structure schematic diagram that welding completes；
Figure 12 is Section A-A schematic diagram in Figure 11.
Specific embodiment
If Fig. 1 and Fig. 2 is the final use state figure of support plate.The processing of the Streamlined thin-wall metallic implants that the present invention adopts
Method includes following step：
(1) as Fig. 3, first sheet material line is cut into the swallow-tail form blank with locating slot for the two ends.
(2) as Fig. 4, using plate blank two ends locating notch positioning, in special shaping flange decompressor module,
Using the effect of upper and lower module and edge, plate plane compacting is in bending two ends, the semi-finished product deployed condition of intermediate deformation, turn
Connect circular arc R and take 15mm, the type face of part produces plastic deformation under the compacting of module, and the machined surface profile on both sides reaches product two sides
Requirement, dimensionally stable not resilience, between arranged on left and right sides type line of face,mounting, angle is 135 °, such as Fig. 5, Fig. 5 middle left and right type face
Datum line and horizontal line angle are 22 ° 30 ', and therefore the angle between the two is 135 °.
(3) as Fig. 6, according to manual bending, then first semi-finished product blank is assembled on type tire, strikes by hand and repair bending two
Side, adjusts the position to a template face afterbody in BENDING PROCESS, it is to avoid produce dislocation after the bending of two sides, knee is with type tire
(corresponding with the connecting arc R) laminating in R face it is ensured that the molding surface size precision of support plate head, according to bending mould, then adopt curved
Bent device needs type face and the position consistency of core and side pressing block, type face and product, and in addition bending apparatus needs to consider and pressure
The consistent location hole of type type face position co-ordination, after completing bending, part can smoothly will take out from the other end of core.
After the contact of bending two sides, by the way of argon arc welding, back edge is burn-on in support plate tail end, form an envelope
The box part closing.
(4), after blank bent welding, tend to vary with support plate head flange position and deform, and, the flange of two sides
In molding procedure, edge is due to being the conical surface shape of segmentation, so, the type face in processing and forming is required with product exist very big
Difference, is exactly to be equipped to cell type support plate integrally school type, cell type support plate using hydraulic processes using the process with flange school type
Correct body shape under mandrel and the effect of both sides surface pressure, support plate two ends flange face, by the extruding of upper mo(u)ld bottom half block, coordinates school
The upper and lower surface of type outer mold piece suppresses the end face edge of support plate together, and the global shape finally realizing support plate requires, and meets product
Need.
7～10 illustrating punch forming in the present invention, brake forming and type face flange school shape process below in conjunction with the accompanying drawings：
As shown in fig. 7, mould is made up of upper and lower two parts, part of the upper die includes cope match-plate pattern 1, upper module 2, under
Mould part includes lower module 4, die 3 and lower template 5, and upper and lower mould is positioned by guide pillar guide pin bushing, during work, sheet material upper and lower side is fixed
Position groove is positioned on the alignment pin of die 3, hydraulic press push rod jack-up lower module 4, and till contact sheet material, part of the upper die is in liquid
Move downward in the presence of press upper mounting plate, by plate compact to lower module 4 upper surface, then part of the upper die and sheet material and under
Module 4 is moved downwardly together, and sheet edge gets into upper module 2 and the gap of die 3, is formed main in the middle of the flange of support plate, sheet material
Body is squeezed into fairshaped type face between upper and lower model face.
As shown in Figure 8 and Figure 9, bending mould is made up of upper and lower two parts, and part of the upper die is snake core mould 7, connects and props up
Seat 6 composition, part of the lower die is made up of left and right two pieces of location-plates 8 and 9 and center curvature lower module, and upper and lower mould passes through guide pillar guide pin bushing
Positioning.During work, semi-finished product to be bent are placed on location-plate 8 and 9, part of the upper die moves down with hydraulic press upper mounting plate, half
Fabricated part is pressed between the bending lower module in the middle of locating piece 8 and 9 in the presence of snake core mould 7, until the lower mould patch of bending
Make sheet material brake forming to lower template, upper mould is opened, part moves with snake core mould 7, depart from part of the lower die, finally by part from
One end of snake core mould 7 is released, and completes BENDING PROCESS.
As shown in Figure 10, upper and lower and left and right four parts of flange Correction Die form.Part of the upper die includes cope match-plate pattern 10,
Convex mould base 11, upper module 12 grade forms, and by lower template 16, load frame, lower 14 modules form with positioning core 15 for part of the lower die,
The left and right correcting block 13 and 17 tiltedly carving channel profile 19 band for band.Upper and lower mould is positioned by guide pillar guide pin bushing.During work, upper/lower die is opened
Open, left and right correcting block 13 and 17 points are opened, hydraulic press push rod jack-up lower module to certain altitude, will be empty for the Central of the parts after welding
Chamber position is inserted on the positioning core 15 of lower mould, and part of the upper die moves down with upper mounting plate, and part is pressed into core 15 by mo(u)ld top half block 12
Move down above and with mo(u)ld top half block 12.Left and right type face correcting block 13 and 17 in the presence of the oblique wedge of upper mould 18 from both sides to
Middle mobile, after upper module 12 goes downwards to certain position, part is sticked and keeps after being expressed to positioning core 15 outside by type face
Motionless, upper module 12 continues traveling downwardly, and the flange part of part is extruded into the upper and lower table of left and right correcting block 13 and 17 by upper and lower module
On face, thus realizing the function that part corrects flange and main body streamline surface；During unlatching, upper module 12 moves upwards, left and right school
Positive block 13 and 17 moves to both sides respectively, and lower module 14 is ejected by the push rod of lathe upwards, makes part depart from positioning core 15, takes
Go out part and complete correction work.
Claims (7)
1. a kind of processing method of Streamlined thin-wall metallic implants is it is characterised in that comprise the following steps：
Step one, plate shears are cut into the swallow-tail form blank with locating slot for the upper/lower terminal；
Plate plane, with the locating slot positioning of upper/lower terminal, is pressed into upper/lower terminal edge using decompressor by step 2
Bending, deformation between upper/lower terminal meets the semi-finished product that a template face requires, and deformation between described upper/lower terminal meets support plate
Type face requires part to include arranged on left and right sides type face, and arranged on left and right sides type is connected by connecting arc R between face, and arranged on left and right sides
The datum line in type face has an angle；
Step 3, is curved to left and right type face with connecting arc R for positioning datum, then by left and right type face after bending tail end
It is weldingly connected；
Step 4, correction template face and curved edge flange.
2. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 2, the datum line angular range in arranged on left and right sides type face is 90 °～150 °.
3. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 2, the radius of connecting arc R is more than support plate head radius.
4. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 2, the arc length of connecting arc R is consistent with support plate head arc length.
5. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 2, arranged on left and right sides type face is connected by connecting arc R and becomes tangent state.
6. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 2, the radius span of connecting arc R is 5～20mm.
7. a kind of Streamlined thin-wall metallic implants according to claim 1 processing method it is characterised in that：
In described step 3, support plate tail end adopts argon arc welding to weld.
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| CN201611118350.3A CN106392501B (en) | 2016-12-07 | 2016-12-07 | A kind of processing method of Streamlined thin-wall metallic implants |
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| CN201611118350.3A CN106392501B (en) | 2016-12-07 | 2016-12-07 | A kind of processing method of Streamlined thin-wall metallic implants |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112975296A (en) * | 2021-03-08 | 2021-06-18 | 哈尔滨汽轮机厂有限责任公司 | Manufacturing method of 300 MW-grade F-grade reburning combustion chamber transition section liner rear sealing ring |
| CN113953771A (en) * | 2021-11-12 | 2022-01-21 | 中国航发贵州黎阳航空动力有限公司 | Machining method of wide-edge metal plate hollow support plate-shaped fairing |
| CN114951428A (en) * | 2022-04-02 | 2022-08-30 | 佛山市南海建泰铝制品有限公司 | Aluminum profile edge folding forming method and system applying same |
| CN113953771B (en) * | 2021-11-12 | 2024-07-09 | 中国航发贵州黎阳航空动力有限公司 | Processing method of hollow supporting plate-shaped fairing with band width edge sheet metal |
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| CN113953771A (en) * | 2021-11-12 | 2022-01-21 | 中国航发贵州黎阳航空动力有限公司 | Machining method of wide-edge metal plate hollow support plate-shaped fairing |
| CN113953771B (en) * | 2021-11-12 | 2024-07-09 | 中国航发贵州黎阳航空动力有限公司 | Processing method of hollow supporting plate-shaped fairing with band width edge sheet metal |
| CN114951428A (en) * | 2022-04-02 | 2022-08-30 | 佛山市南海建泰铝制品有限公司 | Aluminum profile edge folding forming method and system applying same |
| CN114951428B (en) * | 2022-04-02 | 2022-12-13 | 佛山市南海建泰铝制品有限公司 | Aluminum profile edge folding forming method and system applying same |
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