CN106334716B - Flow controls the mould and its application method of formula one-shot forming various dimensions elbow member - Google Patents
Flow controls the mould and its application method of formula one-shot forming various dimensions elbow member Download PDFInfo
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- CN106334716B CN106334716B CN201610999851.0A CN201610999851A CN106334716B CN 106334716 B CN106334716 B CN 106334716B CN 201610999851 A CN201610999851 A CN 201610999851A CN 106334716 B CN106334716 B CN 106334716B
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- pin
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- blank
- elbow member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/12—Extruding bent tubes or rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C31/00—Control devices, e.g. for regulating the pressing speed or temperature of metal; Measuring devices, e.g. for temperature of metal, combined with or specially adapted for use in connection with extrusion presses
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Abstract
Flow controls the mould of formula one-shot forming various dimensions elbow member, including recipient liner, punch-pin, cavity plate, main pressure ram and lateral compression lever for adjusting oil, one end of punch-pin is provided with calibrating strap, 4 consistent metal flow passages of insertion punch-pin axial extent are evenly equipped with punch-pin, the inwall of the end face of punch-pin and main pressure ram surrounds the blank chamber for placing blank, main pressure ram is provided with blank chamber, the shape of main pressure ram matches with blank chamber, and the blank in blank chamber is extruded, adjust the amount of stretching into of each lateral compression lever for adjusting oil, to change the actual internal area of each metal flow passage, elbow member is set to realize that various dimensions are molded.The number of metal flow passage is stretched into by changing lateral compression lever for adjusting oil, change the metal flow size of a direction, so that made elbow member can switch in brake forming and straight line shaping at any time, it is rational in infrastructure, moulding process is reduced, a kind of mould can be made into a variety of elbow members.
Description
Technical field
It is specifically a kind of by controlling metal flow one-shot forming extrusion in tap hole more the present invention relates to hot-working field
The mould and its application method of dimension elbow member.
Technical background
Because bent pipe parts readily satisfy the requirement to product lightweight, high intensity and low consumption etc., in aviation and
It is widely applied in the high-tech sectors such as space flight, in addition to the transfer pipeline for being widely used in gas, liquid, is also widely used as
Hardware.With the development of the high-tech sectors such as aerospace, to demand increasingly thin-walled property, the processing one of bend pipe
Change, the processing of traditional elbow member mainly there are a two methods, and one kind is to push away curved, also cries extruding bending, also one kind is to go for a stroll.No matter
It is which kind of above-mentioned method, is required to two complete equipments, i.e.,（1）Metal stock is made to the equipment of straight pipe, can be drawing, squeeze
The equipment such as pressure, rolling；（2）Straight tube is gone for a stroll or pushed away curved machine, generally around bender and pushes away bender.
A kind of extruding die for bent pipe is disclosed in Publication No. CN203389973U innovation and creation, its specific practice is
Straight tube is placed in groove first, then drives extruding guide wheel to push by driving hydraulic cylinder, straight tube can thus be become
Into bend pipe.So easy to use, efficiency high, still, its raw material are the straight tube for having been processed into shape.Need early stage and enter to be about to admittedly
Body blank is processed into straight tube.
Metal winding pipe device is disclosed in Publication No. CN204583951U innovation and creation, cylinder is controlled by extruding
And the arc of the end face of collective effect and bend pipe the extruding pushing block of heater is set, and completes the buckling work to metal straight pipe.Together
Sample, it is characterized in carrying out pushing away curved operation on the basis of existing straight tube, only power mode is different from aforementioned invention.
A kind of aluminium alloy pipe bending forming method is disclosed in Publication No. CN103861912A innovation and creation；Its
Way is that the alloying metal fritter of low melting point is put into the straight tube for needing to bend, and then melts slug by heating,
Gone for a stroll on bender after cooled and solidified, finally again flowed out filling metal molten automatically by heating.Which solve aluminium
Severe distortion occurs in section after alloy pipe bending forming, such as depression, projection problem.But it is characterized in straight using finished product
Pipe, therefore also metal solid blank first must be processed into straight tube.
A kind of bending extrusion molding of Even thickness elbow is disclosed in Publication No. CN203389973U innovation and creation
Method；It is put into mould after solid cylinder base is heated；Solid cylinder base is applied by drift and compressed axially, brings it about and wears
Hole and plastic deformation；Mould is removed, removes equal diameter plug, obtains Even thickness elbow.The Even thickness elbow arrived of this method
Have the disadvantage that：（1）Make extrusion bend pipe length low because the device for having stationary core rod stops, common use condition can not be met；
（2）It can not realize that various dimensions bend pipe produces, it can only carry out extruding bending in approximately the same plane；（3）After the completion of extruding, wall is waited
Thick bend pipe is firmly stuck on plug, it is more difficult to removes, or tube wall is scratched in removal process.
In summary, currently without one kind from solid metallic blank to the integrally formed method of various dimensions elbow member；In addition,
In shunting soldering extruding tubing, often cause the straight tube material of extrusion that there is certain bending because of the diameter error of tap hole
Degree, production and designer avoid this defect by every possible means, but have no this defect using extruding bend pipe.
In view of this, the present invention provides a kind of by metal flow in tap hole in dynamically adjustment conventional shunt extrusion die
Mould and application method, realize the wall thickness high accuracy high intensity fine grain elbow member such as production of machinery, not only thoroughly break away from elder generation
Straight tube is gone for a stroll or pushed away again curved processing method with traditional extruder, drawbench or roll mill production straight tube, and processing
During can realize the defects of without depression, raised, fold etc. the thick processing of wall elbow member.
The content of the invention
Process is various, forming quality is poor to overcome present in prior art, and the present invention proposes flow control formula once
It is molded the mould and its application method of various dimensions elbow member.
To realize above-mentioned technical purpose, used technical scheme is：Flow controls formula one-shot forming various dimensions elbow member
Mould, including recipient liner, punch-pin, cavity plate, main pressure ram and lateral compression lever for adjusting oil, cavity plate, punch-pin and squeeze
Pressure cylinder liner is fitted and connected together successively；One end of described punch-pin is provided with calibrating strap, and calibrating strap is arranged on the sizing of cavity plate
In hole, there is the gap for extruding elbow member between the outer wall of calibrating strap and the cell wall of metering hole, 4 are evenly equipped with punch-pin
Penetrate the consistent metal flow passage of punch-pin axial extent, the center line of the center line of each metal flow passage with punch-pin is put down
OK, the inwall of the end face of punch-pin and main pressure ram surrounds the blank chamber for placing blank, and main pressure ram is provided with blank chamber,
The shape of main pressure ram matches with blank chamber, and the blank in blank chamber is extruded, in the transverse direction of the periphery of punch-pin
With at least one transverse holes are opened up on longitudinal direction respectively, be equipped with each transverse holes and lateral squeezed with what transverse holes internal diameter matched
Lever for adjusting oil is pressed, lateral compression lever for adjusting oil is stretched into metal flow passage through transverse holes, adjusts each lateral compression
The amount of stretching into of lever for adjusting oil, to change the actual internal area of each metal flow passage, elbow member is set to realize that various dimensions are molded.
One end of punch-pin of the present invention is provided with cylindrical boss, boss, the end face of punch-pin and the inwall of main pressure ram
Circular material blank chamber is surrounded, circular material blank is hung on boss.
The outer rim and the inwall of metal flow passage of boss root of the present invention are tangent.
The external diameter of blank of the present invention is less than the internal diameter 2-3mm of the recipient liner, and its internal diameter is more than boss
External diameter 2-3mm.
Lateral compression lever for adjusting oil of the present invention is step circular shaft shape structure, on the external diameter and punch-pin of its taper end
Transverse holes internal diameter it is identical.
Metering hole axial length of the present invention is 0.8 ~ 1.2 times of extrusion thickness of pipe wall.
The port of export of metering hole of the present invention is provided with undercut, and the outlet bore of undercut is more than the undercut（23）
Inlet calibre.
Calibrating strap, the end face of punch-pin and the inwall of cavity plate of the present invention surround soldering chamber, and soldering chamber connects with metering hole
It is logical.
The aperture of soldering chamber of the present invention is more than the distance of each metal flow passage outer rim on punch-pin end face.
The axial length of calibrating strap of the present invention is 0.8-1.2 times of extruding pipe pipe thickness.
Flow controls the mold use method of formula one-shot forming various dimensions elbow member, comprises the following steps：
Step 1: being built into blank in blank chamber, lateral compression lever for adjusting oil is placed in initial position and does not stretch into metal stream
Passage is moved, in the case that the flow in four metal flow passages is essentially equal, passes through main pressure ram extrusion billet, blank warp
Gap extrusion of four metal flow passages between calibrating strap and metering hole, extruding pipe material is straight tube；
Step 2: when being expressed into the position for needing to bend, start lateral compression lever for adjusting oil, make its axle to punch-pin
Line moves, and reduces the sectional area in corresponding metal flow passage, that is, reduces the flow in corresponding metal flow passage,
Tubing is bent to the lateral compression lever for adjusting oil direction of startup, extrudes swan-neck；
Step 3: when angle of bend reaches design and needed, lateral compression lever for adjusting oil moment returns to initial position, opens
The extrusion that begins straight tube；
Step 4: repeating step 1 to step 3, obtain being integrally formed various dimensions elbow member.
The beneficial effects of the invention are as follows：
1st, the number of metal flow passage is stretched into by changing lateral compression lever for adjusting oil, changes the metal of a direction
Uninterrupted, so that made elbow member can switch in brake forming and straight line shaping at any time, it is rational in infrastructure, reduce into
Type technique, a kind of mould can be made into a variety of elbow members.
2nd, one end of punch-pin is arranged to boss, and matched completely with blank chamber using the circular material blank being linked with boss
Main pressure ram complete extruding, this kind of structure, make blank all directions uniform force in extrusion process, it is wrong that extruding will not occur
Position, dynamics become situations such as changing, make into pipe and be more uniformly distributed, even if changing metal flow in some metal flow passage, also will not
The flow in other metal flow passages is set to change.
The 3rd, undercut is set in the side of metering hole, the elbow member of shaping is molded from undercut to be extruded, and makes going out for undercut
Mouthful bore is more than the inlet calibre of the undercut, i.e., plays guide effect to the elbow member of shaping, do not interfere with again pipe fitting into
Type, prevent the shaping to pipe fitting from disturbing.
4th, the outer rim of boss root and the inwall of metal flow passage are tangent, enable the completely without hindrance quilt of the blank of annular
Metal flow is squeezed into, blank is fully utilized.
Brief description of the drawings
Fig. 1 is the mold system installation diagram of the present invention；
Fig. 2 is Fig. 1 main sectional view；
Fig. 3 is Fig. 1 A-A sectional views；
Fig. 4 is the structural representation of recipient liner of the present invention；
Fig. 5 is Fig. 4 B-B sectional views；
Fig. 6 is the structural representation of punch-pin of the present invention；
Fig. 7 is Fig. 6 main sectional view；
Fig. 8 is the recessed structural representation touched of the present invention；
Fig. 9 is Fig. 8 main sectional view；
Figure 10 is the structural representation of lateral compression lever for adjusting oil of the present invention；
Figure 11 is Figure 10 main sectional view；
Figure 12 is the structural representation of blank；
Figure 13 is Figure 12 main sectional view；
Figure 14 is the structural representation of the main pressure ram of the present invention；
Figure 15 is Figure 14 main sectional view；
Figure 16 is forming process schematic diagram；
Figure 17 is the product size structure chart in embodiment；
In figure：1., recipient liner, 2, punch-pin, 3, cavity plate, 4., lifting screw hole, 5., alignment pin, 6, lateral compression adjusts
Save control-rod, 7, lateral compression lever for adjusting oil, 8, connecting pin, 9, bolt, 10, blank chamber, 11, metal flow passage, 12, weldering
Close chamber, 13, calibrating strap, 14, positioning hole, 15, main pressure ram, 16, blank, 17, metal in tap hole, 18, soldering intracavitary metal,
19th, shaping position, 20. extrusion elbow members, 21., boss, 22., transverse holes, 23, undercut, 24, metering hole.
Embodiment
The mould of flow control formula one-shot forming various dimensions elbow member includes recipient liner, punch-pin, cavity plate, main extruding
Bar, lateral compression lever for adjusting oil and blank；The end face of cavity plate one end is connected by an end face of connecting bolt and pin and punch-pin
Connect, the end face of the punch-pin other end is connected by bolt and connecting pin with the end face of recipient liner one end；After connection, the type of punch-pin
Core segment is stretched into recipient liner cylindrical cavity, and circular material blank chamber is formed together with inner chamber, for holding cylindrical blank；
Main pressure ram is arranged on one end of blank chamber, coordinates with the corresponding end thereof contacts of blank；Lateral compression lever for adjusting oil it is thin
End is arranged in the transverse holes in punch-pin outer rim, and butt end is arranged on extruder.
Recipient liner inner chamber is cylindrical member, and the recipient with loading extruder after punch-pin, cavity plate assembling, its external diameter is with squeezing
Pressure cylinder coordinates, and the internal diameter of the recipient liner is bigger 2-3mm than the external diameter of blank, forms gap and coordinates.
There is the calibrating strap of protrusion end face one end of punch-pin, and described calibrating strap is located at the end for coordinating one end on punch-pin with cavity plate
Face center, the axial length of the calibrating strap are 0.8 ~ 1.2 times of extrusion thickness of pipe wall；There is the convex of radially protruding the calibrating strap end
Platform, the diameter of the boss are equal to the internal diameter of tubing to be formed；4 metal flows for penetrating punch-pin axial direction are evenly equipped with punch-pin
Passage, the centerline parallel of the center line of each metal flow passage with punch-pin；The metal flow passage of the punch-pin is convex at this
Mould coordinates the outlet on the end face of one end with cavity plate, tangent with the root of the calibrating strap positioned at the end face of punch-pin 4.In the outer rim of punch-pin
On have two transverse holes, described two transverse holes connect with two adjacent metal flow passages respectively, described two
The center line of transverse holes and the central axis of punch-pin and intersect.Punch-pin has a cylindrical boss away from one end of calibrating strap,
The outer rim of the boss root and the inwall of the metal flow passage are tangent, and after matching somebody with somebody with recipient inside lining filling, the boss stretches into
Recipient liner forms annular space, for installing blank.
Described cavity plate one end is provided with undercut, and the outlet of the undercut is more than the entrance of the undercut；Cavity plate is matched somebody with somebody with punch-pin
Unification end end face center has soldering chamber, the aperture of the soldering chamber slightly larger than each metal flow passage outer rim on punch-pin end face away from
From；Have metering hole between the soldering chamber of cavity plate and the undercut of cavity plate, metering hole axial length for extrusion thickness of pipe wall 0.8 ~
1.2 again；And there is gap between the outer rim of calibrating strap on the metering hole and punch-pin；The size in the gap and tubing formed thereby
Wall thickness it is identical.
The lateral compression lever for adjusting oil has step circular shaft shape structural form.Transverse direction on the external diameter and punch-pin of taper end
The internal diameter in hole is identical.The length of taper end, which should be enough to ensure that, can put in metal flow passage, and reach maximum can blocking channel half
Section.
The section of the blank and the section of the main pressure ram are annular；The external diameter of the main pressure ram squeezes with described
The internal diameter of pressure cylinder liner inner chamber is equal, and internal diameter has the external diameter phase of a cylindrical boss with one end on the punch-pin from calibrating strap
Together；The external diameter of the blank is less than the internal diameter 2-3mm of the recipient liner, and internal diameter is more than on the punch-pin away from calibrating strap
There is the external diameter 2-3mm of a cylindrical boss one end.
In use, the tubular billet in recipient liner under the promotion of main pressure ram, flows, in punch-pin to punch-pin
Shunted with the intersection of recipient liner, into the metal flow passage in punch-pin and flow to soldering cavity region soldering, pass through
Determine that tubing cross sectional shape is extruded at calibrating strap and metering hole.In the process, two lateral compression lever for adjusting oil controls are passed through
The sectional area in corresponding metal flow passage is made, and then controls metal flow in respective metal flow channel.
Specifically used method：
（1）In the case that flow in four metal flow passages is essentially equal, extruding pipe material is straight tube；Squeeze adjustments
The initial position of control-rod should be not inserted into metal flow passage, tangent with the inwall of metal flow passage；
（2）Start lateral compression lever for adjusting oil when being expressed into the position for needing to bend, it is transported to the axis of punch-pin
It is dynamic, in the process, due to reducing the sectional area in corresponding metal flow passage, so reducing corresponding metal flow
Flow in passage, then produce the metal for because circumferential metal quantity delivered is uneven, forcing and obtaining tubing circumference different parts
Amount is different, produces corresponding bending, to reach the purpose for extruding various dimensions swan-neck；
（3）When a lateral compression lever for adjusting oil enters to the axis work of punch-pin, tubing is instantaneously adjusted to corresponding extruding
Save the bending of control-rod direction；
（4）When angle of bend, which reaches design, to be needed, squeeze adjustments control-rod moment returns to initial position, and it is straight to start extrusion
Pipe；
（5）So iterate through two squeeze adjustments control-rods of control to retreat, reach production various dimensions, high-performance, aptychus
The high-precision elbow member of wrinkle.
The present embodiment be it is a kind of extrude the mould of various dimensions elbow member by controlling in tap hole metal flow, for squeezing
Press the elbow member shown in Figure 17.A diameter of 100mm thickness 3mm circular sections elbow member of extruded pipe material product, the material of product
It is as shown in figure 17 for 6061 aluminium alloys, remaining specific size.Extruding owner's squeeze cylinder tonnage that forming process uses for 3000t,
Side cylinder extruding force is more than or equal to 60t, and two are repacked into using the hydraulic cylinder of mold ejection mechanism and extruder scissors controlling organization
Side cylinder is used to be driven lateral squeeze adjustments control-rod, also can separately fill two corresponding side hydraulic cylinders and be used to be driven lateral compression tune
Save control-rod.Mould and remaining compression tool are made using H13 hot die steels.
The present invention includes recipient liner 1, punch-pin 2, cavity plate 3, main pressure ram 15, lateral compression lever for adjusting oil 6, lateral
Squeeze adjustments control-rod 7 and blank 16；The end face of the one end of cavity plate 3 passes through connecting pin 8 and interior hexagonal fastening bolt 9 and punch-pin 2
One end face connection, the end face of the other end of punch-pin 2 pass through connecting pin 8 and interior hexagonal fastening bolt 9 and the one end of recipient liner 1
End face connects；After connection, the projection section of punch-pin 2 stretches into the cylindrical cavity of recipient liner 1, and annular is formed together with inner chamber
Inner chamber, for holding cylindrical blank 16；Main pressure ram 15 be arranged on the annular cavity one end, corresponding with blank 16 one
End in contact coordinates；The taper end of lateral compression lever for adjusting oil 6 and lateral compression lever for adjusting oil 7 is arranged in the outer rim of punch-pin 2
In transverse holes, initial position is placed in, does not put in metal flow passage 11, keeps tangent with the inwall of metal flow passage 11,
Butt end is arranged on the side cylinder on extruder.
Recipient liner 1 is circle ring column.The external diameter of recipient liner 1 and the minor diameter fit of recipient.Recipient liner 1
Inside there is cylindrical mold cavity.2 connecting pin bores and 2 spiral shells are symmetrically distributed with the end face that recipient liner 1 and punch-pin 2 coordinate
Keyhole, for recipient liner 1 and punch-pin 2 to be connected.Recipient liner 1 loads extruder after being assembled with punch-pin 2, cavity plate 3
Recipient, its external diameter coordinate with recipient.
There is the calibrating strap 13 of protrusion end face one end of punch-pin 2, and described calibrating strap is located on punch-pin 2 with cavity plate 3 with unification
The end face center at end, effective work axial length of calibrating strap 13 are 2.5mm in the present embodiment, the end diameter of calibrating strap 13
Equal to the internal diameter 100mm of tubing to be formed；The metal stream of the 4 a diameter of 38mm axial direction of insertion punch-pin 2 is evenly equipped with punch-pin 2
Dynamic passage 11, the centerline parallel of the center line of metal flow passage 11 with punch-pin 2；The metal flow passage of the punch-pin 2
11 coordinate the outlet on the end face of one end in the punch-pin 2 and cavity plate 3, tangent with the root of the calibrating strap 13 positioned at the end face of punch-pin 2.
Have two a diameter of 38mm transverse holes 22 in the outer rim of punch-pin, described two transverse holes 22 respectively with corresponding two gold
Belong to flow channel 11 vertically through.Punch-pin 2 has a cylindrical boss 21, the root of boss 21 away from one end of calibrating strap 13
Outer rim and the inwall of the metal flow passage 11 it is tangent, with recipient liner 1 assemble after, the boss stretches into recipient liner
1 forms annular space, for installing blank 16.
The one end of cavity plate 3 is provided with undercut 23, and the outlet of the undercut is more than the entrance of the undercut；Cavity plate coordinates with punch-pin
One end end face center has a soldering chamber 12, the aperture of soldering chamber 12 be more than the outer rim of metal flow passage 11 on the end face of punch-pin 2 away from
From 2mm；There is metering hole 24 between the soldering chamber 12 of cavity plate 3 and the undercut 23 of cavity plate 3, the axial length of metering hole 24 is
2.5mm；And it is 3mm to have gap on the metering hole 24 and punch-pin 2 between the outer rim of calibrating strap 13.
Lateral compression lever for adjusting oil 6 and lateral compression lever for adjusting oil 7 have step circular shaft shape structural form.Taper end
External diameter is that 38mm is identical with the internal diameter of the transverse holes 22 on punch-pin 2.The length of taper end is 110mm.Butt end is arranged on extruding pusher side
In the frock of cylinder.
Blank external diameter is 177mm, internal diameter 83mm, length 450mm in the present embodiment, installed in punch-pin 2 and recipient
In the annular chamber that liner 1 is formed；Main pressure ram external diameter is 180mm, internal diameter 80mm, length 750mm in the present embodiment, one end
On the master cylinder piston on extruder.
The method of extruder action control in the present embodiment：
（1）Blank 16 in recipient liner 1 is in the case where main pressure ram 15 is promoted with the axial direction of 3 ~ 4mm/s speed, to convex
Mould 2 flows, and is shunted in the intersection of punch-pin 2 and recipient liner 1, into the metal flow passage 11 in punch-pin and flow to weldering
The metal 18 that the region of chamber 12 forms soldering intracavitary is closed, the shaping position 19 formed by gap at calibrating strap 13 and metering hole 24 is true
Fixed tube material cross sectional shape is extruded.Now lateral compression lever for adjusting oil 6 and lateral compression lever for adjusting oil 7 are in initial position, not
The metal flow passage 11 of punch-pin 2 is put in, its end face and the inwall of metal flow passage 11 are tangent.
（2）In the initial procedure of extrusion, have a certain amount of a crackle and folded region, referred to as material head, remove after material head when
When the length of straight pipe of extrusion is more than 200mm, you can proceed by the bending tube section that first bending radius is R50 and extrude, R50 is
The radius of the Inner arc of tubing bent angle, now squeeze adjustments control-rod 6 is started, and with the speed more than 30mm/s to punch-pin 2
Axis direction work enter 17.45mm and stop.The work speed of main pressure ram 15 is reduced to 1 ~ 1.5mm/s simultaneously；The section is bent
Partial metal volume is 147894mm3, with reference to the sectional dimension of recipient liner die cavity in the present embodiment, and according to volume not
Become principle and calculate and understand, the main pressure ram 6.76mm that reruns can complete the bending tube section of the R50.
（3）Then squeeze adjustments control-rod 6 is drawn back with the speed more than 30mm/s to the negative side of the axis of punch-pin 2
17.45mm is stopped to initial position, and main pressure ram speed is adjusted to 3 ~ 4mm/s speed, and it is 245mm's to extrude the segment length
Straight tube needs 230790 mm3Metal, also according to constancy of volume principle calculate understand, it is necessary to main pressure ram run 11.30mm
The straight length that the length is 245mm can be completed.
（4）Then main pressure ram speed is reduced to 1 ~ 1.5mm/s；And now will start squeeze adjustments control-rod 7, and
Enter 10.41mm to the axis direction work of punch-pin 2 with the speed more than 30mm/s to stop, starting Inner arc as R100 bending tube sections
Extrusion, according to above-mentioned constancy of volume principle, the bending section volume is 443682 mm3, main pressure ram operation 21.73mm can be complete
Into the bending tube section of the R100.
（5）Then squeeze adjustments control-rod 7 is drawn back with the speed more than 30mm/s to the negative side of the axis of punch-pin 2
10.41mm simultaneously stops to initial position, and main pressure ram speed is adjusted to 3 ~ 4mm/s speed, and it is 130mm's to extrude the segment length
Straight tube.
Claims (10)
1. flow controls the mould of formula one-shot forming various dimensions elbow member, it is characterised in that：Including recipient liner（1）, it is convex
Mould（2）, cavity plate（3）, main pressure ram（15）With lateral compression lever for adjusting oil（6）, cavity plate（3）, punch-pin（2）With recipient liner
（1）It is fitted and connected successively together；Described punch-pin（2）One end be provided with calibrating strap（13）, calibrating strap（13）It is arranged on cavity plate
（3）Metering hole（24）It is interior, calibrating strap（13）Outer wall and metering hole（24）Cell wall between have for extruding elbow member
Gap, in punch-pin（2）On be evenly equipped with 4 insertion punch-pin（2）The consistent metal flow passage of axial extent（11）, each metal flow
Passage（11）Center line and punch-pin（2）Centerline parallel, punch-pin（2）End face and main pressure ram（15）Inwall surround
For placing the blank chamber of blank（10）, blank chamber（10）Inside it is provided with main pressure ram（15）, main pressure ram（15）Shape with
Blank chamber（10）Match, and to blank chamber（10）Interior blank（16）Extruded, in punch-pin（2）Periphery transverse direction and
At least one transverse holes are opened up on longitudinal direction respectively（22）, each transverse holes（22）Inside it is equipped with and transverse holes（22）Internal diameter phase
The lateral compression lever for adjusting oil matched somebody with somebody（6）, lateral compression lever for adjusting oil（6）Through transverse holes（22）Stretch into metal flow passage
（11）It is interior, adjust each lateral compression lever for adjusting oil（6）The amount of stretching into, to change each metal flow passage（11）Circulation
Sectional area, elbow member is set to realize that various dimensions are molded.
2. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is characterised in that：It is described
Punch-pin（2）One end be provided with cylindrical boss（21）, boss（21）, punch-pin（2）End face and main pressure ram（15）Inwall
Surround circular material blank chamber（10）, circular material blank（16）It is hung on boss（21）On.
3. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 2, it is characterised in that：It is described
Boss（21）The outer rim of root and metal flow passage（11）Inwall it is tangent.
4. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 2, it is characterised in that：It is described
Blank（16）External diameter be less than the recipient liner internal diameter 2-3mm, its internal diameter be more than boss external diameter 2-3mm.
5. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is characterised in that：It is described
Lateral compression lever for adjusting oil（6）For step circular shaft shape structure, the internal diameter of the transverse holes on the external diameter and punch-pin of its taper end
It is identical.
6. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is characterised in that：It is described
Metering hole（24）Axial length is 0.8 ~ 1.2 times of extrusion thickness of pipe wall.
7. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is characterised in that：It is described
Metering hole（24）The port of export be provided with undercut（23）, undercut（23）Outlet bore be more than the undercut（23）Entrance
Bore.
8. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is characterised in that：It is described
Calibrating strap（13）, punch-pin（2）End face and cavity plate（3）Inwall surround soldering chamber（12）, soldering chamber（12）With metering hole
（24）Connection.
9. the mould of flow control formula one-shot forming various dimensions elbow member as claimed in claim 8, it is characterised in that：It is described
Soldering chamber（12）Aperture be more than punch-pin（2）Each metal flow passage on end face（11）The distance of outer rim.
10. the mold use method of flow control formula one-shot forming various dimensions elbow member as claimed in claim 1, it is special
Sign is：Comprise the following steps：
Step 1: be built into blank in blank chamber, lateral compression lever for adjusting oil, which is placed in initial position and does not stretch into metal flow, to be led to
Road, in the case that flow in four metal flow passages is essentially equal, by main pressure ram extrusion billet, blank is through four
Gap extrusion of the metal flow passage between calibrating strap and metering hole, extruding pipe material is straight tube；
Step 2: when being expressed into the position for needing to bend, start lateral compression lever for adjusting oil, it is transported to the axis of punch-pin
It is dynamic, reduce the sectional area in corresponding metal flow passage, that is, reduce the flow in corresponding metal flow passage, tubing
Bent to the lateral compression lever for adjusting oil direction of startup, extrude swan-neck；
Step 3: when angle of bend reaches design and needed, lateral compression lever for adjusting oil moment returns to initial position, starts to squeeze
Go out straight tube；
Step 4: repeating step 1 to step 3, obtain being integrally formed various dimensions elbow member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999851.0A CN106334716B (en) | 2016-11-14 | 2016-11-14 | Flow controls the mould and its application method of formula one-shot forming various dimensions elbow member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610999851.0A CN106334716B (en) | 2016-11-14 | 2016-11-14 | Flow controls the mould and its application method of formula one-shot forming various dimensions elbow member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106334716A CN106334716A (en) | 2017-01-18 |
| CN106334716B true CN106334716B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610999851.0A Active CN106334716B (en) | 2016-11-14 | 2016-11-14 | Flow controls the mould and its application method of formula one-shot forming various dimensions elbow member |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114309112B (en) * | 2021-12-30 | 2024-03-19 | 福州大学 | Novel Bc constant diameter angle extrusion die |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2650496A1 (en) * | 1976-11-04 | 1978-05-11 | Klaus Klee | Mfg. appts. for curved pipes or sections - has matrix of two sections fitting together and having straight and bowed gauging bores respectively |
| US4157024A (en) * | 1978-01-03 | 1979-06-05 | The Babcock & Wilcox Company | Forming die and process for tubular fittings |
| CN202316623U (en) * | 2011-11-21 | 2012-07-11 | 钱康乐 | Extrusion mold |
| CN102601147B (en) * | 2012-03-21 | 2014-04-16 | 西北工业大学 | Mould for multi-blank equal-channel angular welding extruded molded pipe |
| CN103909125A (en) * | 2014-04-03 | 2014-07-09 | 南京航空航天大学 | Brake and extrusion forming method for iso-wall-thickness elbows |
| CN104550289B (en) * | 2014-12-30 | 2018-08-28 | 天津理工大学 | The method of extrusion forming curvature of space tubing of more punch-pin |
| CN206199900U (en) * | 2016-11-14 | 2017-05-31 | 洛阳理工学院 | Flow controls the mould of formula one-shot forming various dimensions elbow member |
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2016
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| CN106334716A (en) | 2017-01-18 |
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