CN106734443A - Back-shaped groove framework processing method and a kind of series connection insert splicing bending mould - Google Patents
Back-shaped groove framework processing method and a kind of series connection insert splicing bending mould Download PDFInfo
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- CN106734443A CN106734443A CN201611211991.3A CN201611211991A CN106734443A CN 106734443 A CN106734443 A CN 106734443A CN 201611211991 A CN201611211991 A CN 201611211991A CN 106734443 A CN106734443 A CN 106734443A
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- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/01—Selection of materials
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/04—Movable or exchangeable mountings for tools
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention provides a kind of back-shaped groove framework processing method and a kind of series connection insert splicing bending mould, belong to mechanical stamping technical field, reduce weld defect, leveling man-hour and reduce labour intensity that reduction thermal deformation causes；Solve the problems, such as the production slot of " Z " shape bending；Mould is made up of punch assemblies, cavity plate component and the part of positioner three；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；Punch assemblies include the identical simply different punch insert of length of seven kinds of structures；Back-shaped groove framework processing method includes three bendings.Split weld length is reduced using piece frock bending technique technology and manufactured using general supplementary angle process.Multiple product bending is completed by piece bending mould, die manufacturing cost is reduced, can quickly be changed the mold, improve the uniformity of product batches.
Description
Technical field
The invention belongs to mechanical stamping technical field, it is related to sheet metal to bend and bending mould.
Background technology
(1) background technology scheme：
It is back-shaped groove framework, groove and the curved narrow required precision of plate body Z-shaped in the middle of the panel with rivet hole that shape of product is
Height, groove is narrow, and outside is high.This part is applicable the general principle of bending, and bending can be carried out using mould in forcing press, it is also possible in folding
Used on bender, (as shown in Figure 1 and Figure 2).
In the past, back-shaped groove framework and Z-shaped is curved cannot be completed using existing Bending Mould, divides three body bending single-pieces to spell always
Weldering processing.(as shown in Figure 3, Figure 4), product 1 is the panel with rivet hole, and product 2 and product 3 are the identical simply length of structure
Difference, is converted into channel-section steel, then product 2 and product 3 are welded on product 1.Product 2 and the product of product 3, (as shown in Figure 5, Figure 6).
Welding manner and the sectional view part of position (as shown in Figure 4).Welding procedure is that the material (of the same race or xenogenesis) of welded piece is led to
Cross heating, and with or without packing material, reach the material of workpiece and interatomic build and and form the work of permanent connection
Skill process.This technical process can make product produce very big thermal deformation.
Bending process is the shape needs according to part, and sheet material is bent by mould and forcing press (bender, punch press)
Have a certain degree, certain curvature, formed definite shape part Sheet Metal Forming Technology method.Mould installion on bender, with
Slide block down plate outer layer fiber is stretched, and internal layer is squeezed contracting, and neutral line is constant, and at this moment steel plate is pressed into certain angle, bending
Complete.Curved super-long structure is in the industrial production using quite extensive, such as many automobiles, tractor, electrical equipment, instrument, electronics, state
Covering, tank bracket component, support, button, clip in the industry such as anti-etc..The product is closed back-shaped groove frame flex part, material
Material is steel plate 3/Q235-A, so being also applied for bending principle (as shown in Fig. 7 Fig. 8).Straight punch-pin 2 is fixed using lathe bolt
On convex mould pad 1, general cavity plate 4 is fixed on cavity plate backing plate 5, is controlled between mould closure height and mould by bender
Gap, that is, ensureing that punch-pin is pushed will not be too deep or can not be compacted, and punch-pin is descending, under the pressure of punch-pin, the effect of sheet material bending moment,
Elastic deformation is first passed around, subsequently into plastic deformation, in the plastic deformation incipient stage, plate is free bend.With punch-pin
Push, plate is gradually close to cavity plate V-arrangement surface.Radius of curvature and bending moment arm are tapered into simultaneously, and punch-pin is pushed,
Sheet metal bending deformed area continue reduce, until with punch-pin three point contact, to stroke end its value side, fillet and punch-pin is all leaned on
Tightly.Bending forming process terminates.
(2) defect of background technology：
Back-shaped groove framework uses multistage split welding manufacture, and postwelding thermal deformation is big, reaches 30-50mm torsional deformations, weld seam
Need substantial amounts of hand grinding, in addition narrow slot at all cannot trimming, need manual leveling straightening, leveling often to occur lifting up at deformation
Seesaw effect, labour intensity is big, and presentation quality and dimensional uniformity are poor, and production efficiency is low, also inspection of welding product etc.
Problem.This kind of frame structure is the same, simply the change in size of framework length and width.As each size does one set of die, significantly
Increase die manufacturing cost.Existing Universal bending die tool can not meet product needed, and small lot, the production of multi items at all
Mode feature.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of back-shaped more efficiently processing method of groove framework, there is provided
A kind of simple series connection insert bending mould for the processing of back-shaped groove framework.
Split weld length is reduced using piece frock bending technique technology and manufactured using general supplementary angle process.Subtract
Few weld defect, reduces leveling man-hour and reduction labour intensity that thermal deformation causes；The production slot for solving " Z " shape bending is asked
Topic, without adjusting after shaping, improve production efficiency.
Multiple product bending is completed by piece bending mould, die manufacturing cost is reduced, can quickly be changed the mold, improved
The uniformity of product batches.
The method and mould are applicable flexible shaping, with enough plasticity, yield tensile ratio (σb/σs) it is small, yield point with elasticity
Ratio (the σ of modulusb/ E) small metal material.For example, the material such as mild steel, brass and aluminium, thickness≤3mm, length≤1500mm
Product.
The technical scheme is that：, a kind of series connection insert splicing bending mould, by punch assemblies, cavity plate component and fixed
The position part of device three composition；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；Punch assemblies
Including the identical simply different punch insert of length of seven kinds of structures, punch assemblies section is big radian tulwar shape；Cavity plate component
It is made up of with die socket cavity plate, is interference fits between cavity plate and die socket, cavity plate is pressed into the middle of die socket, both fixes
Together；Cavity plate includes that with seven kinds of size die plate inserts each series connection can be combined as different lengths size；Cavity plate is boss knot
Structure, V-arrangement of the crook of part to the distance of end when cavity plate V-shaped groove center line to cavity plate left side outer wall dimension is second bending
To cavity plate outer wall distance, cavity plate is the symmetrical slot structure of double V-arrangements to groove center line；Its centre of die socket carries a wide groove, cavity plate
Clamping is in die socket；The cavity plate and die socket interference fits；Positioner be by fastening bolt, location-plate, locking nut and
Bolt is constituted；, location-plate is fixed on die socket by fastening bolt, fastening bolt is withstood on cavity plate through die socket；
Away from top on location-plate, just above the tapped through hole that the position at the top of cavity plate processes, the bolt precession screwed hole, and
Fixed using locking nut on the outside of location-plate；Die socket has multiple holes for fastening bolt, enable location-plate with
The increase and decrease of die plate insert quantity is moved along die socket.
Preferably, punch and matrix insert is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions respectively；
Seven kinds of dimension combination different lengths.
Preferably, punch-pin mouthful width dimensions 11mm, is respectively designed to three kinds of fillet sizes.
Preferably, punch insert material selects 42GrMo materials, integral quenching HRC47 ± 2, punch insert series connection splicing
Clamping is on bender
Preferably, die socket Design of length is 1500mm, and a 50mm wide groove is carried in the middle of it.
Preferably, cavity plate assembly material selects 42GrMo materials, integral quenching HRC47 ± 2.
Preferably, during second bending of part, the crook of part to the distance of end is V-shaped groove center line to cavity plate outer wall
Distance, is 8.5mm.
Back-shaped groove framework processing method, step is as follows：
First time bending step：According to bending linear dimension, rotational positioning bolt stretches out the length of location-plate, makes cavity plate V-arrangement
Groove center is equal to bending linear dimension to bolt distance, and locking nut lies on cavity plate plate, and plate and positioning
Bolt is close to, and punch-pin is pushed, and product type is into first time bending；
Second bending step：First dismantle positioner, first time bending upset 180 degree is buckled on cavity plate, with cavity plate
Outer wall is close to, and is positioned with cavity plate left side outer wall, cavity plate V-shaped groove center line is equal to cavity plate outer wall distance and calculates secondary bending
Bending linear dimension, punch-pin pushes, and product type is into second bending；
Third time bending step：Positioner is reinstalled, bolt is readjusted, locking nut will be for the second time
Bending turns back 180 degree and is placed on cavity plate again, is close to bolt, by bending line sizing, completes third time bending, completes
One bending on side.
Preferably, back-shaped groove framework processing method, step is as follows：
Two Edge Bends long of back-shaped groove framework are first completed by above-mentioned three bendings order, then completes two foldings of short side
Curved, framework bending is completed.
Mould structure is simple, weight is light, easy to operate, practical.Bending die structure is by punch-pin, die set
Constituted with the part of positioner three.Wherein cavity plate is mainly made up of die plate insert, die socket, and cavity plate interference fits fix die socket
In, according to product length series connection die plate insert, accomplish quick mold changing；Positioner has two kinds of positioning fractions；Punch-pin is main by curved
Knife punch insert is constituted, of different sizes according to product bending R, has been separately designed R1-3 kind punch-pin and has been used in series the various length of composition
Size.Manufacture experimently and one group of effective die parameters L for producingA=14；rT=1；RA=0.8；RA1=0.2；β=88 degree, such as
Shown in Figure 11.And use both the above positioning method, bending time-division three step to implement, three bendings of framework are completed, solve Z " shape
Curved production slot problem, as shown in Figure 16, Figure 17, Figure 18.
Technique effect of the invention is as follows：
Split weld length is reduced using special insert frock bending technique technology and general supplementary angle process system is used
Make.(general supplementary angle can standardize)
1st, the product processed by press device and special bending mould, is compared with welding shaping and had the following advantages：
1) weld seam is reduced 90%-95% by this kind of method, saves the nearly 90%-95% of wlding, and one piece of artificial leveling is small by 3
When be reduced to 30 minutes, substantially reduce labor strength.Improve product appearance quality, it is ensured that the uniformity of size.Shorten
In Product processing man-hour, manufacturing procedure is reduced, reduce laser cutting length 2/3.
Bending special tooling technology is combined by using multistage, improvement is clearly.Fusion length is reduced
95%.The leveling time by original one piece 3 hours, shorten to complete for 30 minutes, greatly reduce labor strength, presentation quality and
Dimensional uniformity is good, substantially increases production efficiency.
When a, leveling section：By annual 700, average every with 2, every piece is saved 2.5 hours, 23 yuan per hour,
700X2X2.5 hours X23 units/hour=80500 yuan；
When b, weld seam section：Average every weld seam is long 2.8 meters, 20 ms/h of weldering speed
(2.8 × 95% × 2 × 700)/20 × 23=4282.6 units
The consumption of c, laser cutting and wlding is counted.
2) mould is only needed before start, first by framework clamping punch-die insert in side long, two Edge Bends long after the completion of, by short
Side size directly unloads the insert of part punch-die, then rolls over short both sides.Mould need not be so debugged, is not interfered with mounted in machine
The linearity of bed mold, and it is laborsaving when also being saved during mould unloading, it is not necessary to adjusting is carried out to product, labour intensity is small, accomplish quick
Mold changing, accomplishes one module multiple usages, saves substantial amounts of Making mold expense, the administration fee of mold storing.
According to statistics some projects：Seven kinds of vehicles of statistics, about 22.5 meters of framework size
Comprehensive various factors Making mold 1.5 ten thousand/rice of expense, ten thousand yuan of 22.5 × 1.5=33.75,
1.5 meters of combination die length, ten thousand yuan of 1.5 × 1.5=2.25 saves 31.5 ten thousand yuan of Making mold expense.
It is adapted to the characteristics of multi items, small lot batch manufacture, quickly changes the mold time-consuming：A mould is changed, the interior activity duration subtracts
Few 37.4 minutes, the outer activity duration reduces 32 minutes, in batches by 700 ÷, 30=23.33 batches (37.4+32)/60 × 23.33
× 23 yuan/hour=1414.75 yuan
3) product size precision is higher, and presentation quality is good, arc transition nature, and product batches uniformity is good.
2nd, special bending mould design structure be simple and convenient to operate, low cost of manufacture, quick mold changing can be accomplished, it is practical
The advantages of property is strong.
Brief description of the drawings
Fig. 1 Product processing portion profile figures
Fig. 2 product design sectional views
Fig. 3 Product processings part original conceptual scheme
Fig. 4 Product processings part original scheme sectional view
Fig. 5 products 2 and the product front view of product 3 (length of two kinds of parts is different)
Fig. 6 products 2 and the product left view of product 3
Fig. 7 bender operation principle front views
Fig. 8 bender operation principle sectional views
Fig. 9 punch assemblies schematic diagrames
Figure 10 cavity plate component diagrams
Figure 11 positioner schematic diagrames
Figure 12 cavity plate schematic diagrames
Figure 13 die socket schematic diagrames
Figure 14 positioner schematic view of the mounting position
Figure 15 die parameters illustrate schematic diagram
Bending schematic diagram of Figure 16
The secondary bending schematic diagrames of Figure 17
Tri- bending schematic diagrames of Figure 18.
Wherein, 45 straight punch-pin of convex mould pad, 67 general cavity plate of plate 8 installs 9 cavity plate of backing plate 10, I-cooperation of die socket
The plate 16 of 14 M10X40 bolts of face 11M10X45 fastening bolt 12 location-plate, 13 M10 locking nuts 15 is once rolled over
Curved 17 2 bendings, 18 3 bendings.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of simple series connection insert bending mould of the invention is by punch assemblies (such as Fig. 9), cavity plate component (such as Figure 10)
Constituted with positioner (such as Figure 11) three parts.Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix
Insert, according to the back-shaped diversified feature of groove framework length dimension.
Punch and matrix insert is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions, seven kinds of sizes respectively
The various length of independent assortment, insert tandem docking is seamless, accomplishes to adapt to the variation of product size.Punch-pin, cavity plate are improved simultaneously
Utilization rate, accomplishes one module multiple usages, saves substantial amounts of Making mold expense, the administration fee of mold storing.
The identical simply length of seven kinds of punch insert contour structures is different in punch assemblies (such as Fig. 9), if punch-pin is made directly
Can interfere with the folding curved above product of twice, therefore make big radian tulwar shape, punch-pin mouthful width dimensions 11mm both ensures mould
Intensity, i.e., preceding working procedure interferes the situation of later process when preventing twice above bending process again, the need for meeting folding narrow slot.For
Meet the different needs of product fillet, be respectively designed to tri- kinds of fillet sizes of R1, R2, R3.Punch insert material is selected
42GrMo materials, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, good toughness.Punch-pin series connection splicing clamping
On bender, by lathe, bolt is connected with lathe in itself, and docking is seamless, and the punch-pin of partial-length is dismounted as needed
Block, quick mold changing, completes the product bending of different length.This design punch structure is simple, and lightweight, convenient mounting and clamping reduces mould
Tool takes up an area, it is possible to use itself lathe bolt is fixed.
Cavity plate component (such as Figure 10), is made up of cavity plate (such as Figure 12) with die socket (such as Figure 13), female die block and die socket it
Between be interference fits 50H7/k6 (marker I), cavity plate is pressed into the middle of die socket, by fastening bolt (11 in such as Figure 10) will
Both are fixed together.Shown in cavity plate (such as Figure 12), connected using seven kinds of size inserts, can the various length dimensions of independent assortment.
Only die plate insert quantity need to be increased and decreased according to product bending length dimension aborning, accomplish quick mold changing.Cavity plate makes boss knot
Structure, both ensures mould strength, also reduces the waste of finishing；Cavity plate V-shaped groove center line is to cavity plate outer wall 8.5mm (by V-shaped groove
Center line carries out part positioning with the distance of cavity plate outer wall), it is possible to use cavity plate outer wall positioning (positioning is used when folding second is curved),
Can be operated with safe ready, also solve the limitation in the past with bending machine tool self poisoning；Double symmetrical slot structures of V-arrangement, can be with
When mould local damage needs to replicate and changes, without considering installation direction.Shown in die socket (such as Figure 13), Design of length is
1500mm, carries a 50mm wide groove, it is ensured that linearity, stability of the cavity plate clamping in die socket in the middle of it, make
Insert docking is smooth.The cavity plate and die socket interference fits 50H7/k6, it is ensured that die plate insert is slipped into pine also should not should not excessively
Tension.Once there is mould local damage, the die location of die plate insert can be easy to adjust and replicate.Cavity plate assembly material is selected
Use 42GrMo materials, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, good toughness.In order to fasten cavity plate and
Location-plate, prepare 28 M10X45 fastening bolts (consumption can be determined according to insert quantity, including positioner in two
Bar).
Positioner (such as Figure 11), is made up of fastening bolt 11, location-plate 12, locking nut 13 and bolt 14.
The specification of fastening bolt 11 is M10X45 (two), and the size of location-plate 12 is 135X25X10 (two pieces), and locking nut is M10 (two
It is individual) and the specification of bolt 14 be M10X40 (two), location-plate is fixed on die socket (such as Figure 14) by fastening bolt, this
Two bolts both also can fix cavity plate simultaneously with stationary positioned plate, and cavity plate is withstood on through die socket.Respectively in two pieces of positioning
Each machine in position of the plate away from top 11mm adds a tapped through hole of M10, with bolt precession screwed hole, and on the outside of location-plate
Fixed using locking nut, the length that rotational positioning bolt stretches out can be needed according to bending size, play a part of positioning.Cavity plate
Seat tool has multiple holes for fastening bolt, location-plate is moved along die socket with the increase and decrease of die plate insert quantity.
The material selection 42GrMo materials of location-plate, integral quenching HRC47 ± 2.The material high intensity of selection, quenching degree is good, toughness.
Mould is machined, for die parameters (such as Figure 15) r of back-shaped geosynclinal block body bendingT=1；LA=14；RA=0.8；
RA1=0.2；β=88 degree, with two kinds of positioning methods, first install punch and matrix insert by back-shaped groove framework lengthwise dimension, complete
Two Edge Bends long, punch and matrix insert of then dismantling completes two width bendings of back-shaped geosynclinal block body with remaining mould.
Order installation mold is debugged the mould time again after can saving punch and matrix insert of dismantling by, clamped one time mould bending
High precision.The step of bending time-division three is implemented, and completes three bendings of framework, solves the problems, such as Z " the curved production slot of shape.
Step is as follows：
First time bending (such as Figure 16), according to bending linear dimension, rotational positioning bolt 14 stretches out the length of location-plate, makes recessed
Mould V-shaped groove center is equal to bending linear dimension to bolt distance, and locking nut lies on cavity plate plate 15, and plate
Material is close to bolt, and punch-pin is pushed, and product type is into first time bending 16.
Second bending (such as Figure 17), positioner of first dismantling, by first time bending 16 overturn 180 degree be buckled in by diagram it is recessed
On mould, it is close to cavity plate outer wall, is positioned with cavity plate left side outer wall, makes cavity plate V-shaped groove center line to cavity plate outer wall apart from 8.mm5 etc.
In the bending linear dimension for calculating secondary bending, punch-pin is pushed, and product type is into second bending 17.
Third time bending (such as Figure 18), reinstalls positioner, readjusts bolt, locking nut, by
Secondary bending 17, then turn back 180 degree (returning to original direction) and lain on cavity plate by diagram, it is close to bolt, equally
By bending line sizing, third time bending is completed, product type is into third time bending 18.First completed by above-mentioned three bendings order
Two Edge Bends long of back-shaped groove framework, then two bendings of short side are completed, framework bending is completed.
Claims (9)
1. a kind of series connection insert splices bending mould, it is characterised in that by punch assemblies, cavity plate component and the part of positioner three
Composition；Punch assemblies and cavity plate component are using insert tandem compound splicing punch and matrix insert；
Punch assemblies include the different punch insert of seven kinds of structure equal lengths, and punch assemblies section is big radian tulwar shape,
Cavity plate component is made up of cavity plate with die socket, is interference fits between cavity plate and die socket, and cavity plate is pressed into die socket
Central, both are fixed together；Cavity plate includes that with seven kinds of size die plate inserts each series connection can be combined as different lengths chi
It is very little；Cavity plate is boss structure, and the crook of part is arrived when cavity plate V-shaped groove center line to cavity plate left side outer wall dimension is second bending
To cavity plate outer wall distance, cavity plate is the symmetrical slot structure of double V-arrangements to the V-shaped groove center line of the distance of end；
It is middle with a wide groove for die socket, and cavity plate clamping is in die socket；The cavity plate and die socket interference fits；
Positioner is made up of fastening bolt, location-plate, locking nut and bolt；, location-plate is consolidated by fastening bolt
It is scheduled on die socket, fastening bolt is withstood on cavity plate through die socket；
Away from top on location-plate, just above the tapped through hole that the position at the top of cavity plate processes, the bolt precession screw thread
Hole, and fixed using locking nut on the outside of location-plate；
Die socket has multiple holes for fastening bolt, enables location-plate as the increase and decrease of die plate insert quantity is along cavity plate
Seat is mobile.
2. a kind of series connection insert according to claim 1 splices bending mould, it is characterised in that punch and matrix insert is distinguished
It is fabricated to 50,80,100,150,200,300,500mm seven kinds of length dimensions；Seven kinds of dimension combination different lengths.
3. a kind of series connection insert according to claim 1 splices bending mould, it is characterised in that punch-pin mouthful width dimensions
11mm, is respectively designed to three kinds of fillet sizes.
4. a kind of series connection insert according to claim 1 splices bending mould, it is characterised in that punch insert material is selected
42GrMo materials are used, integral quenching HRC47 ± 2, punch insert series connection splices clamping on bender.
5. a kind of series connection insert splicing bending mould according to claim 1, it is characterised in that die socket Design of length is
1500mm, carries a 50mm wide groove in the middle of it.
6. a kind of series connection insert according to claim 1 splices bending mould, it is characterised in that cavity plate assembly material is selected
Use 42GrMo materials, integral quenching HRC47 ± 2.
7. a kind of series connection insert according to claim 1 splices bending mould, it is characterised in that second bending of part
When, the crook of part is V-shaped groove center line to cavity plate outer wall distance to the distance of end, is 8.5mm.
8. using claim 1 book a kind of series connection insert splice bending mould back-shaped groove framework processing method, its feature
It is that step is as follows：
First time bending step：According to bending linear dimension, rotational positioning bolt stretches out the length of location-plate, in making cavity plate V-shaped groove
The heart is equal to bending linear dimension to bolt distance, and locking nut lies on cavity plate plate, and plate and bolt
It is close to, punch-pin is pushed, product type is into first time bending；
Second bending step：First dismantle positioner, first time bending upset 180 degree is buckled on cavity plate, with cavity plate outer wall
It is close to, is positioned with cavity plate left side outer wall, makes cavity plate V-shaped groove center line that the folding for calculating secondary bending is equal to cavity plate outer wall distance
Curved line size, punch-pin is pushed, and product type is into second bending；
Third time bending step：Positioner is reinstalled, bolt, locking nut, by second bending is readjusted
180 degree is turned back again to be placed on cavity plate, is close to bolt, by bending line sizing, complete third time bending, complete one
The bending on side.
9. back-shaped groove framework processing method according to claim 8, it is characterised in that step is as follows：
Two Edge Bends long of back-shaped groove framework are first completed by above-mentioned three bendings order, then completes two bendings of short side, frame
Body bending is completed.
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| CN201611211991.3A CN106734443B (en) | 2016-12-25 | 2016-12-25 | Back-shaped slot framework processing method and a kind of series connection insert splice bending mould |
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|---|---|---|---|
| CN201611211991.3A CN106734443B (en) | 2016-12-25 | 2016-12-25 | Back-shaped slot framework processing method and a kind of series connection insert splice bending mould |
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| CN106734443B CN106734443B (en) | 2019-02-19 |
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| CN112475014A (en) * | 2020-11-30 | 2021-03-12 | 北京北方车辆集团有限公司 | Porous mold processing of bi-directional bending pedal piece |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138561A (en) * | 2017-05-26 | 2017-09-08 | 勤钦精密工业(昆山)有限公司 | A kind of metal plate bending cutter structure |
| CN107335728A (en) * | 2017-08-07 | 2017-11-10 | 浙江奥桑机械设备有限公司 | A kind of regulation retaining mechanism for part pressure angle on paving machine |
| CN108838683A (en) * | 2018-07-18 | 2018-11-20 | 乐清市中雁机械制造有限公司 | Full-automatic curve Bending Processing equipment |
| CN112570526A (en) * | 2019-09-29 | 2021-03-30 | 昆山嘉丰盛精密电子有限公司 | P-shaped folded edge bending process |
| CN111229943A (en) * | 2020-03-16 | 2020-06-05 | 安徽鲲鹏装备模具制造有限公司 | Bending unit with stepless adjustable die strip width for bending machine |
| CN112475014A (en) * | 2020-11-30 | 2021-03-12 | 北京北方车辆集团有限公司 | Porous mold processing of bi-directional bending pedal piece |
| CN112475014B (en) * | 2020-11-30 | 2024-06-11 | 北京北方车辆集团有限公司 | Porous mold processing of piece is stepped on in two-way bending |
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