CN110227750A - A kind of hydraulic piecemeal flanging forming device of tailor welded and its manufacturing process - Google Patents
A kind of hydraulic piecemeal flanging forming device of tailor welded and its manufacturing process Download PDFInfo
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- CN110227750A CN110227750A CN201910400946.XA CN201910400946A CN110227750A CN 110227750 A CN110227750 A CN 110227750A CN 201910400946 A CN201910400946 A CN 201910400946A CN 110227750 A CN110227750 A CN 110227750A
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- hydraulic
- piecemeal
- hydraulic cylinder
- tailor welded
- cylinder cavity
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- 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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/04—Blank holders; Mounting means therefor
- B21D24/08—Pneumatically or hydraulically loaded blank holders
-
- 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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
- B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention provides a kind of hydraulic piecemeal flanging forming device of tailor welded and its manufacturing process, its device includes upper die holder, punch-pin, blank body, hydraulic cylinder cavity and lower die holder, punch-pin is fixed on upper die holder, hydraulic cylinder cavity is fixed on lower die holder, blank body includes upper blank holder, upper blank holder fixed column and four groups have mutually isostructural flanging component, every group of flanging component includes piecemeal blank holder, guide post and piston, before forming, hydraulic oil enters hydraulic cylinder cavity and drives the ejection of flanging component, tailor welded is clamped with four flanging components, when forming, upper die holder is moved down with punch-pin, control system carrys out the size of real-time control pressure-pad-force by adjusting the variation of oil pressure in hydraulic cylinder, guarantee the smooth forming of tailor welded, after forming, cope plate is moved up with punch-pin and blank body moves down, it returns to respective initial Position, mechanical structure integrated level is high, tailor welded piecemeal flanging experiment is appropriate for, conducive to the forming of tailor welded.
Description
Technical field
The invention belongs to experimental provision fields, and in particular to a kind of hydraulic piecemeal flanging forming device of tailor welded and its forming
Method.
Background technique
In modern automobile industry, tailor welded has very in terms of lightweight, the reduction mold of automobile
More advantages.Therefore by more and more extensive concern, many automobile manufacture commercial cities are in automobile production largely using spelling now
Welding plate, newest result of study show: in state-of-the art steel body structure, 50% or more, which uses tailor welded, is manufactured.
However although tailor welded has many advantages, such as, but many technically insoluble difficulties, and current people also occur
People are still unable to satisfy in the technologic needs of tailor welded blank forming to the research of tailor welded.In tailor welded blank forming technique,
Pressure-pad-force is an important factor for influencing tailor welded blank forming, and reasonable pressure-pad-force can effectively inhibit the corrugation and rupture of part,
Piecemeal flanging is increasingly valued by people as a kind of means of the problems in effective solution tailor welded blank forming process, but
It is the experimental provision that there is presently no a kind of suitable for studying tailor welded blank forming, which greatly limits shape to tailor welded piecemeal flanging
The research of technique.
Summary of the invention
The application devises a kind of hydraulic piecemeal flanging of tailor welded using piecemeal pressing method using hydraulic offer power
Forming device and its manufacturing process.Specifically, the hydraulic piecemeal flanging forming device provided by the present invention for tailor welded will
Blank holder is axially subdivided into four pieces, and realizes independent, real-time On-line Control to every piece of piecemeal blank holder, thus solve due to
When deformed area sheet thickness is circumferentially distributed uneven, how more preferably to realize that implementing effective flanging control to whole deformation area asks
Topic.
Specifically, the present invention provides a kind of hydraulic piecemeal flanging forming device of tailor welded comprising upper die holder, is stood punch-pin
Column, blank body, hydraulic cylinder cavity and lower die holder, punch-pin are fixed on upper die holder, and hydraulic cylinder cavity is fixed at lower die
On seat；
Two root posts are provided between upper die holder and hydraulic cylinder cavity, the first end of each column is set in a manner of being fixedly connected
It sets in upper die holder, the second end of each column is extend into hydraulic cylinder cavity with energy sliding type；
Blank body includes that upper blank holder, upper blank holder fixed column and four groups have mutually isostructural flanging component, often
Group flanging component includes piecemeal blank holder, guide post and piston, and upper blank holder fixed column is for being fixed company to upper blank holder
It connects, the upper end of upper blank holder fixed column is fixed on blank holder, and the bottom end of upper blank holder fixed column is fixed on hydraulic cylinder cavity
Top groove in；Along the circumferential direction splicing from beginning to end forms the annulus that a centre has through-hole to four piecemeal blank holders, each
The first end of guide post is fixed on a piecemeal blank holder, and the second end of each guide post is fixedly connected with a piston, each
Piston is arranged in a hydraulic cavities of hydraulic cylinder cavity, and each flanging component can be distinguished under the action of hydraulic control system
Independently moved up and down；
Hydraulic cylinder cavity includes ontology and the boss that ontology two sides are arranged in, and boss is equipped with the guiding slid into for column
Hole, ontology circumferentially on be uniformly arranged there are four hydraulic cavities, it is defeated that four hydraulic cavities can be hydraulically controlled system difference real-time perfoming
Pressure controls out, and then different pressure-pad-forces is provided to tailor welded.
Preferably, four hydraulic cavities of hydraulic cylinder cavity be respectively the first hydraulic cavities, the second hydraulic cavities, third hydraulic cavities with
And the 4th hydraulic cavities, each hydraulic cavities includes rod chamber and rodless cavity, and hydraulic control system includes fuel tank, filter, liquid
Press pump, the first hydraulic pressure unit, the second hydraulic pressure unit, third hydraulic pressure unit and the 4th hydraulic pressure unit；
First hydraulic pressure unit includes the first electromagnetic relief valve and the first solenoid directional control valve；Second hydraulic pressure unit includes the second electricity
Magnetic overflow valve and the second solenoid directional control valve；Third hydraulic pressure unit includes third electromagnetic relief valve and third solenoid directional control valve；4th
Hydraulic pressure unit includes the 4th electromagnetic relief valve and the 4th solenoid directional control valve；Hydraulic pump is mounted in fuel tank, and filter is arranged in liquid
At the oil inlet of press pump, the first hydraulic pressure unit, the second hydraulic pressure unit, third hydraulic pressure unit and the 4th hydraulic pressure unit are arranged in parallel,
The oil inlet of four hydraulic pressure units is connected to hydraulic pump oil outlet respectively, and the oil return opening of four hydraulic pressure units connects with fuel tank respectively
It is logical；
First electromagnetic relief valve is connected with the first solenoid directional control valve, the first solenoid directional control valve oil outlet A1 and hydraulic cylinder cavity
In the rodless cavities of the first hydraulic cavities be connected, the oil outlet B1 of the first solenoid directional control valve has with the first hydraulic cavities in hydraulic cylinder cavity
Rod cavity is connected；Second electromagnetic relief valve is connected with the second solenoid directional control valve, the second solenoid directional control valve oil outlet A2 and hydraulic cylinder cavity
The rodless cavity of the second hydraulic cavities is connected in body, the second hydraulic cavities in the oil outlet B2 and hydraulic cylinder cavity of the second solenoid directional control valve
Rod chamber is connected；Third electromagnetic relief valve is connected with third solenoid directional control valve, third solenoid directional control valve oil outlet A3 and hydraulic cylinder
The rodless cavity of third hydraulic cavities is connected in cavity, third hydraulic cavities in the oil outlet B3 and hydraulic cylinder cavity of third solenoid directional control valve
Rod chamber be connected；4th electromagnetic relief valve is connected with the 4th solenoid directional control valve, the 4th solenoid directional control valve oil outlet A4 with it is hydraulic
The rodless cavity of the 4th hydraulic cavities is connected in cylinder cavity, and the oil outlet B4 of the 4th solenoid directional control valve and the in hydraulic cylinder cavity the 4th is hydraulic
The rod chamber of chamber is connected.
Preferably, piecemeal blank holder is set as a quarter annular shape, each piecemeal blank holder is provided with a confession
The blind hole that guide post penetrates.
Preferably, punch-pin has initial position and predeterminated position.
Preferably, what the one end on the top of two root posts was symmetrical is welded on upper die holder close to outer edge.
Preferably, the present invention also provides a kind of hydraulic piecemeal flanging manufacturing process of progress tailor welded comprising following steps:
S1, the preparation for carrying out tailor welded blank forming: after hydraulic oil enters hydraulic cylinder cavity, adjusting the height of four piecemeal blank holders,
So that the upper surface of four identical piecemeal blank holders is in concordant state, tailor welded is placed on four concordant piecemeal blank holders
Upper surface, hydraulic oil enters the rodless cavity below hydraulic cavities internal piston by four lower fuel feed holes of hydraulic cylinder cavity
In the middle, it pushes piston, guide post and piecemeal blank holder to move up, is clamped in tailor welded between upper blank holder and piecemeal blank holder,
Complete the preparation of tailor welded blank forming；
S2, moving down by upper die holder, move the column being fixed on upper die holder downwardly together with punch-pin, when convex
When mould and tailor welded contact, tailor welded starts forming process；
S3, the pressure-pad-force for adjusting piecemeal blank holder, upper die holder are moved down with punch-pin, when punch-pin reaches a certain predeterminated position
When, complete the forming process of tailor welded；
S4, upper die holder and punch-pin move up, and piston, guide post and piecemeal blank holder move down, and return to initial position, wait next time
Operation.
Preferably, in step S3, hydraulic control system carrys out real-time control flanging by adjusting the variation of the oil pressure of hydraulic cavities
The size of power guarantees the forming of different-thickness tailor welded.
Compared with prior art, the invention has the following advantages:
1, of the invention compact-sized, it can be reduced by four hydraulic cavities compounding designs in a hydraulic cylinder cavity
Manufacturing cost.
2, the device of the invention realizes piecemeal flanging and pressure-pad-force is adjustable, in the use of the present invention, passing through control hydraulic oil
Oil pressure variation, the size of real-time control pressure-pad-force can effectively inhibit the corrugation and rupture of tailor welded.
3, overall processing of the present invention is simple and convenient, and design of part is simple, easy to process, unmanageable that structure is complicated
Part.The manufacturing cycle is shortened, manufacturing cost is reduced.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the hydraulic piecemeal flanging forming device of tailor welded of the present invention；
Fig. 2 is the hydraulic integrally-built right side structural representation of piecemeal flanging forming device of tailor welded of the present invention；
Fig. 3 is the A-A schematic cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of hydraulic control system；
Fig. 5 is schematic perspective view of the invention；
Fig. 6 is the structural schematic diagram of upper die holder and its component of the invention；
Fig. 7 is the structural schematic diagram of upper blank holder of the invention；
Fig. 8 is the structural schematic diagram of flanging component and hydraulic cylinder cavity of the invention；
Fig. 9 is the structural schematic diagram of punch-pin of the invention；
Figure 10 is the structural schematic diagram of piecemeal blank holder of the invention；
Figure 11 is the structural schematic diagram of hydraulic cylinder cavity of the invention；
Figure 12 is the B-B schematic cross-sectional view of Fig. 1.
Specific embodiment
Present invention is further described in detail with example operation with reference to the accompanying drawing.Following embodiment is for illustrating this
Invention, but be not intended to limit the scope of the invention.
The present invention provides a kind of hydraulic piecemeal flanging forming device of tailor welded, as shown in Figures 1 to 6 comprising upper die holder
1, hexagon socket head cap screw 2, column 3, punch-pin 4, blank body 100, hydraulic cylinder cavity 10 and lower die holder 11.It is fixed on lower die holder 11
Hydraulic cylinder cavity 10 is set, and hydraulic cylinder cavity 10 is equipped with blank body 100, and punch-pin 4 is mounted on upper die holder 1.With upper mold
Moving up and down for seat 1, will be arranged in 122 drawing and forming of the tailor welded in blank body 100.
Tailor welded 122 of the invention can be the two plates with different-thickness t1 and t2, and being also possible to muti-piece has
The tailor welded of different-thickness and material property.For the tailor welded 122 of such non-axisymmetric parts, using conventional flange fixing installation into
Flanging effect is bad when row drawing.The present invention is based on this provide it is a kind of with hydraulic separate new structural, for tailor welded
Block flanging forming device.Blank holder is axially subdivided into four pieces by the device of the invention, and is realized to every piece of piecemeal blank holder only
Vertical, real-time On-line Control, to implement when solving circumferentially distributed uneven due to deformed area sheet thickness to whole deformation area
The problem of effective flanging control.
Specifically, punch-pin 4 is fixed on upper die holder 1 by bolt arrangement, in the present embodiment, punch-pin 4 passes through two
Hexagon socket head cap screw 2 is fixed on upper die holder 1.When upper die holder 1 moves up and down, punch-pin 4 can with upper die holder 1 together on move down
Dynamic, punch-pin 4 has the initial position on top and the tailor welded blank forming predeterminated position of lower part, when the tailor welded for being moved to lower part
When the predeterminated position of 122 formings, the forming process of tailor welded is completed.
The identical column 3 of two root knot structures is respectively arranged between upper die holder 1 and hydraulic cylinder cavity 10, two root posts 3 are located at
The first end on top is fixed on upper die holder 1, and the second end that two root posts 3 are located at bottom slides into the guiding of hydraulic cylinder cavity 10
It can move up and down in hole 104 and in pilot hole 104.Two root posts 3 are symmetrically set relative to the longitudinal centre line of upper die holder 1
It sets in 1 through hole of upper die holder.
Blank body 100 includes upper blank holder 5, upper blank holder fixed column 6 and flanging component.Flanging component includes piecemeal
Blank holder 7, guide post 8 and piston 9, tailor welded 122 are clamped between upper blank holder 5 and piecemeal blank holder 7.Upper blank holder is fixed
Column 6 is provided with two, for being fixedly connected to upper blank holder 5 with hydraulic cylinder cavity 10.Wherein, upper blank holder fixed column 6
Upper end be fixedly connected in blank holder 5, the lower end of upper blank holder fixed column 6 is fixed on the top of hydraulic cylinder cavity 10.And
And as shown in fig. 7, upper blank holder 5 is set as circular ring type, the middle position of upper blank holder 5, which is provided with, can pass freely through punch-pin
The through-hole 51 of 4 cylindrical body 42.
As shown in figure 8, piecemeal blank holder 7, guide post 8 and piston 9 are respectively arranged with four groups, for respectively to tailor welded
122 carry out piecemeal flanging.Each piecemeal blank holder 7, each guide post 8 and each piston 9 form one group of flanging component,
Four piecemeal blank holders 7, guide post 8 and piston 9 form four groups of flanging components being distributed uniformly and circumferentially altogether.Each is led
Column 8 and each piston 9 can independently be moved up and down respectively under the control of hydraulic control system.
The first end of each guide post 8 is fixed on a piecemeal blank holder 7, and the second end of each guide post 8 is solid
Surely it is connected on a piston 9.Four identical pistons 9 are arranged in four hydraulic cavities 103 of hydraulic cylinder cavity 10, hydraulic
Cylinder cavity 10 is welded on lower die holder 11.
As shown in figure 9, punch-pin 4 includes cup dolly 41 and cylindrical body 42, there are two screw threads for setting on cup dolly 41
Hole 43, punch-pin 4 are fixed on upper die holder 1 by means of threaded hole 43 and hexagon socket head cap screw 2.
As shown in Figure 10, piecemeal blank holder 7 is set as a quarter annular shape, each piecemeal blank holder 7 is provided with
One blind hole 71 penetrated for guide post 8.The identical piecemeal blank holder 7 of four structures can mutually splice one centre of composition from beginning to end
Annulus with through-hole 81.
As shown in FIG. 11 and 12, hydraulic cylinder cavity 10 includes the ontology 101 of cylindrical-shaped structure and is arranged in ontology 101
The boss 102 of two sides, ontology 101 be equipped with the hydraulic cavities 103 that move up and down for guide post 8, and boss 102 is equipped with to be slid into for column 3
Pilot hole 104.As shown in connection with fig. 3, in a preferred embodiment, ontology 101 circumferentially on be uniformly arranged there are four hydraulic
Chamber 103, four pistons 9 are separately positioned in four hydraulic cavities 103.The bottom of each hydraulic cavities 103 is respectively arranged with one
Fuel feed hole 105.Four hydraulic cavities 103 independently can carry out hydraulic pressure control by control system to as needed to tailor welded
122 provide different pressure-pad-forces.
In the present invention, the hydraulic device for controlling hydraulic cavities 103 constitutes and the course of work is as follows:
Four hydraulic cavities 103 of hydraulic cylinder cavity 10 be respectively the first hydraulic cavities, the second hydraulic cavities, third hydraulic cavities and
4th hydraulic cavities, each hydraulic cavities are provided with a rod chamber 110 and a rodless cavity 111, show two liquid in Fig. 3
Press the rod chamber 110 and a rodless cavity 111 of chamber.As shown in figure 4, hydraulic control system includes fuel tank 12, filter 13, liquid
Press pump 14, the first hydraulic pressure unit, the second hydraulic pressure unit, third hydraulic pressure unit and the 4th hydraulic pressure unit.
First hydraulic pressure unit includes the first electromagnetic relief valve 15 and the first solenoid directional control valve 19；Second hydraulic pressure unit includes the
Two electromagnetic relief valves 16 and the second solenoid directional control valve 20；Third hydraulic pressure unit includes that third electromagnetic relief valve 17 and third electromagnetism change
To valve 21；4th hydraulic pressure unit includes the 4th electromagnetic relief valve 18 and the 4th solenoid directional control valve 22；Hydraulic pump 14 is mounted on fuel tank
In 12, filter 13 is arranged at the oil inlet of hydraulic pump 14, the first hydraulic pressure unit, the second hydraulic pressure unit, third hydraulic pressure unit
It is arranged in parallel with the 4th hydraulic pressure unit, the oil inlet of four hydraulic pressure units is connected to the oil outlet of hydraulic pump 14 respectively, four liquid
The oil return opening of pressure unit is connected to fuel tank 12 respectively.
First electromagnetic relief valve 15 is connected with the first solenoid directional control valve 19, the oil outlet A1 and liquid of the first solenoid directional control valve 19
The rodless cavity 111 of first hydraulic cavities is connected in cylinder pressure cavity 10, the oil outlet B1 and hydraulic cylinder cavity of the first solenoid directional control valve 19
The rod chamber 110 of first hydraulic cavities is connected in 10；Second electromagnetic relief valve 16 is connected with the second solenoid directional control valve 20, the second electromagnetism
20 oil outlet A2 of reversal valve is connected with the rodless cavity 111 of the second hydraulic cavities in hydraulic cylinder cavity 10, the second solenoid directional control valve 20
Oil outlet B2 is connected with the rod chamber 110 of the second hydraulic cavities in hydraulic cylinder cavity 10；Third electromagnetic relief valve 17 and third electromagnetism
Reversal valve 21 is connected, the rodless cavity 111 of third hydraulic cavities in the oil outlet A3 and hydraulic cylinder cavity 10 of third solenoid directional control valve 21
It is connected, the oil outlet B3 of third solenoid directional control valve 21 is connected with the rod chamber 110 of third hydraulic cavities in hydraulic cylinder cavity 10；4th
Electromagnetic relief valve 18 is connected with the 4th solenoid directional control valve 22, in the oil outlet A4 and hydraulic cylinder cavity 10 of the 4th solenoid directional control valve 22
The rodless cavity 111 of 4th hydraulic cavities is connected, and the oil outlet B4 of the 4th solenoid directional control valve 22 and the in hydraulic cylinder cavity 10 the 4th is hydraulic
The rod chamber 110 of chamber is connected.
Hydraulic pump 14 is opened for hydraulic control system fuel feeding, hydraulic control system to pass through four electromagnetic relief valves of control
The oil pressure value of oil outlet so that four hydraulic cavities 103 of hydraulic cylinder cavity 10 be made to obtain required pressure value, and then makes piecemeal pressure
Flange 7 obtains respectively required real-time pressure-pad-force.The real-time pressure-pad-force that piecemeal blank holder 7 obtains is for cooperating by external pressure machine
Upper die holder 1 is driven to carry out the deep-drawing technique of tailor welded 122 with punch-pin 4 thereon.Four solenoid directional control valves are for controlling hydraulic cylinder
The piston 9 of four hydraulic cavities 103 of cavity is in stretching or contraction state, when the spool of four solenoid directional control valves is placed in left position
When, for spool since magneticaction is attracted to left end, hydraulic oil enters the rodless cavity 111 of four hydraulic cavities 103 by fluid pressure line,
Eject guide post 8.When the spool of four solenoid directional control valves is placed in right position, hydraulic oil enters four hydraulic cavities by fluid pressure line
Rod chamber 110 withdraws guide post 8；When the spool of four solenoid directional control valves is placed in middle position, four hydraulic cavities 103 are locked, pass through this
Four spool states control the movement of flanging component.
Another aspect of the present invention also provides a kind of hydraulic piecemeal flanging manufacturing process of tailor welded comprising following steps:
S1, the preparation for carrying out tailor welded blank forming: after hydraulic oil enters hydraulic cylinder cavity, four piecemeal blank holders are adjusted
Height, so that the upper surface of four identical piecemeal blank holders is in concordant state, tailor welded be placed on four concordant points
Block blank holder upper surface, hydraulic oil pass through four lower fuel feed holes of hydraulic cylinder cavity, enter under hydraulic cylinder inside cavity piston
In four hydraulic cavities of side, piston, guide post and piecemeal blank holder is pushed to move up, tailor welded is made to be clamped in upper blank holder and divide
Between block blank holder, the preparation of tailor welded blank forming is completed.
S2, moving down by upper die holder, move the column being fixed on upper die holder downwardly together with punch-pin, when convex
When mould and tailor welded contact, tailor welded starts forming process.
S3, upper blank holder is fixed at this time, and upper die holder is moved down with punch-pin, and blank body is by means of hydraulic cylinder cavity
Oil pressure variation come real-time control pressure-pad-force size, pressure-pad-force needed for tailor welded blank forming is provided.
S4, when punch-pin reach a certain predeterminated position when, complete the forming process of tailor welded.
S5, upper die holder are moved up with the punch-pin being fixed thereon, and piston, guide post and piecemeal blank holder move down, and return to initial bit
It sets, waits next operation.
In step S3, hydraulic control system carrys out real-time control pressure-pad-force by adjusting the variation of the oil pressure of hydraulic cylinder cavity 10
Size, guarantee different-thickness tailor welded forming.
The present invention is further expalined combined with specific embodiments below:
The drawing preparation stage first turns on hydraulic pump 14, this operation is not necessarily to carry out in next operation, by four electromagnetism
Overflow valve is opened, and the spool of four solenoid directional control valves is placed in left position, stretches out the flanging component of four hydraulic cavities, when four
When piecemeal blank holder 7 is in sustained height, the spool of four solenoid directional control valves is placed in middle position locking flanging component, then by welding
Plate 122 is placed on four 7 upper surfaces of piecemeal blank holder, and the spool for being again turned on four solenoid directional control valves is placed in left position, hydraulic cylinder
The piston stretching of cavity 10 is clamped tailor welded 122 between piecemeal blank holder 7 and upper blank holder 5, at this time by four electromagnetism
The spool of reversal valve is placed in middle position locking flanging component, and the preparation stage completes.
Drawing and forming stage, external press machine drive upper die holder 1 at the uniform velocity to push with punch-pin 4 thereon, when punch-pin 4 and spell
When welding plate 122 contacts, tailor welded 122 starts forming process.At this point, the spool of four solenoid directional control valves is placed in left position pressure again
Side component stretches out, and hydraulic control system is by controlling the oil pressure value of four electromagnetic relief valve oil outlets thus obtain flanging component
It obtains required pressure value and then piecemeal blank holder 7 is made to apply respective real-time pressure-pad-force.When punch-pin 4 reaches technique predeterminated position
When, deep-drawing technique is completed, and the spool of four solenoid directional control valves is placed in middle position locking flanging component.
After moulding process, upper die holder 1 is moved up with the punch-pin 4 being fixed thereon, and returns to initial position, and four electromagnetism change
It is placed in right position flanging component to the spool of valve to retract, flanging component returns to initial position, the spool of four solenoid directional control valves is set
In middle position locking flanging component, next operation is waited.
Finally, it should be noted that above each embodiment is only used to illustrate the technical scheme of the present invention, rather than its limitations；
Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that: its according to
Can so modify to technical solution documented by previous embodiment, or part of or all technical features are carried out etc.
With replacement；And these modifications or substitutions, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Range.
Claims (7)
1. a kind of hydraulic piecemeal flanging forming device of tailor welded, it is characterised in that: it includes upper die holder, column, punch-pin, edging machine
Structure, hydraulic cylinder cavity and lower die holder, the punch-pin are fixed on the upper die holder, and the hydraulic cylinder cavity is fixed at institute
It states on lower die holder；
Two root posts are provided between the upper die holder and the hydraulic cylinder cavity, the first end of each column is connected with fixed
The mode of connecing is arranged in the upper die holder, and the second end of each column extend into the hydraulic cylinder cavity with energy sliding type
Pilot hole in；
The blank body includes that upper blank holder, upper blank holder fixed column and four groups have mutually isostructural flanging component, often
Group flanging component includes piecemeal blank holder, guide post and piston；The upper blank holder fixed column be used for the upper blank holder into
Row is fixedly connected, and the upper end of the upper blank holder fixed column is fixed on the upper blank holder, the upper blank holder fixed column
Bottom end is fixed in the top groove of the hydraulic cylinder cavity；Along the circumferential direction splicing forms four piecemeal blank holders from beginning to end
One centre has the annulus of through-hole, and the first end of each guide post is fixed on the piecemeal blank holder, often
The second end of a guide post is fixedly connected with the piston, and one of the hydraulic cylinder cavity is arranged in each piston
In hydraulic cavities, each flanging component can independently be moved up and down respectively under the action of the hydraulic cylinder cavity；
The hydraulic cylinder cavity includes ontology and the boss that ontology two sides are arranged in, and the boss is equipped with to be protruded into for the column
Pilot hole, the ontology circumferentially on be uniformly arranged there are four hydraulic cavities, four hydraulic cavities can be hydraulically controlled system
Real-time perfoming output pressure control respectively, and then different pressure-pad-forces is provided to respective tailor welded.
2. the hydraulic piecemeal flanging forming device of tailor welded according to claim 1, it is characterised in that:
Four hydraulic cavities of the hydraulic cylinder cavity are respectively the first hydraulic cavities, the second hydraulic cavities, third hydraulic cavities and the 4th
Hydraulic cavities, each hydraulic cavities include rod chamber and rodless cavity, and hydraulic control system includes fuel tank, filter, hydraulic pump,
One hydraulic pressure unit, the second hydraulic pressure unit, third hydraulic pressure unit and the 4th hydraulic pressure unit；
First hydraulic pressure unit includes the first electromagnetic relief valve and the first solenoid directional control valve；Second hydraulic pressure unit includes the
Two electromagnetic relief valves and the second solenoid directional control valve；The third hydraulic pressure unit includes third electromagnetic relief valve and third electromagnetic switch
Valve；4th hydraulic pressure unit includes the 4th electromagnetic relief valve and the 4th solenoid directional control valve；The hydraulic pump is mounted on the oil
In case, the filter is arranged at the oil inlet of the hydraulic pump, first hydraulic pressure unit, the second hydraulic pressure unit, third
Hydraulic pressure unit is arranged in parallel with the 4th hydraulic pressure unit, and the oil inlet of four hydraulic pressure units connects with the hydraulic pump oil outlet respectively
Logical, the oil return opening of four hydraulic pressure units is connected to the fuel tank respectively；
First electromagnetic relief valve is connected with the first solenoid directional control valve, the first solenoid directional control valve oil outlet A1 and the liquid
The rodless cavity of the first hydraulic cavities is connected in cylinder pressure cavity, the oil outlet B1 of first solenoid directional control valve and the hydraulic cylinder cavity
In the first hydraulic cavities rod chamber be connected；Second electromagnetic relief valve is connected with the second solenoid directional control valve, second electromagnetism
Reversal valve oil outlet A2 is connected with the rodless cavity of the second hydraulic cavities in the hydraulic cylinder cavity, and second solenoid directional control valve goes out
Hydraulic fluid port B2 is connected with the rod chamber of the second hydraulic cavities in the hydraulic cylinder cavity；The third electromagnetic relief valve is changed with third electromagnetism
It is connected to valve, the third solenoid directional control valve oil outlet A3 is connected with the rodless cavity of third hydraulic cavities in the hydraulic cylinder cavity,
The oil outlet B3 of the third solenoid directional control valve is connected with the rod chamber of third hydraulic cavities in the hydraulic cylinder cavity；Described 4th
Electromagnetic relief valve is connected with the 4th solenoid directional control valve, the in the 4th solenoid directional control valve oil outlet A4 and the hydraulic cylinder cavity
The rodless cavity of four hydraulic cavities is connected, the 4th hydraulic cavities in the oil outlet B4 and the hydraulic cylinder cavity of the 4th solenoid directional control valve
Rod chamber be connected.
3. the hydraulic piecemeal flanging forming device of tailor welded according to claim 1, it is characterised in that: the piecemeal blank holder
It is set as a quarter annular shape, each described piecemeal blank holder is provided with the blind hole penetrated for the guide post.
4. the hydraulic piecemeal flanging forming device of tailor welded according to claim 1, it is characterised in that: the punch-pin has just
Beginning position and predeterminated position.
5. the hydraulic piecemeal flanging forming device of tailor welded according to claim 1, it is characterised in that: the two root posts
The one end on top it is symmetrical be welded on the upper die holder through hole.
6. a kind of hydraulic using the hydraulic piecemeal flanging forming device progress tailor welded of the described in any item tailor weldeds of claim 1-5
Piecemeal flanging manufacturing process, it is characterised in that: itself the following steps are included:
S1, the preparation for carrying out tailor welded blank forming: after hydraulic oil enters the hydraulic cylinder cavity, four piecemeal pressures are adjusted
The height of flange makes the upper surface of described four identical piecemeal blank holders be in concordant state, tailor welded is placed on described
The upper surface of four concordant piecemeal blank holders, hydraulic oil pass through four lower fuel feed holes of the hydraulic cylinder cavity, enter institute
It states in the rodless cavity below piston described in hydraulic cylinder inside cavity, the piston, guide post and piecemeal blank holder is pushed to move up,
It is clamped in tailor welded between the upper blank holder and the piecemeal blank holder, completes the preparation of tailor welded blank forming；
S2, moving down by the upper die holder, move the column being fixed on the upper die holder downwardly together with punch-pin,
When the punch-pin and tailor welded contact, tailor welded starts forming process；
S3, the pressure-pad-force for adjusting the piecemeal blank holder, the upper die holder are moved down with punch-pin, when punch-pin arrival is a certain
When predeterminated position, the forming process of tailor welded is completed；
S4, the upper die holder and punch-pin move up, and the piston, guide post and piecemeal blank holder move down, and initial position are returned to, under waiting
Once-through operation.
7. the hydraulic piecemeal flanging manufacturing process of tailor welded according to claim 6, it is characterised in that: in the step S3,
Hydraulic control system carrys out the size of real-time control pressure-pad-force by adjusting the variation of the oil pressure of hydraulic cylinder cavity, guarantees different-thickness
The forming of tailor welded.
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| CN201910400946.XA CN110227750B (en) | 2019-05-15 | 2019-05-15 | Hydraulic blocking and blank pressing forming device and forming method for tailor-welded blank |
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| CN110227750B (en) | 2020-08-11 |
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