CN108941233A - A kind of open inner mold backward and forward extrusion composite die - Google Patents
A kind of open inner mold backward and forward extrusion composite die Download PDFInfo
- Publication number
- CN108941233A CN108941233A CN201810744243.4A CN201810744243A CN108941233A CN 108941233 A CN108941233 A CN 108941233A CN 201810744243 A CN201810744243 A CN 201810744243A CN 108941233 A CN108941233 A CN 108941233A
- Authority
- CN
- China
- Prior art keywords
- punch
- cavity plate
- pin
- hole
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 56
- 239000002131 composite material Substances 0.000 title claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/03—Making uncoated products by both direct and backward extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of open inner mold backward and forward extrusion composite dies, mainly it is made of indirect-extrusion mould and forward extrusion mould, include upper ejector pin 1, upper die holder 2, upper padding plate 3, Upper Die-sleeve 4, punch-pin 5, punch case 1, pressing plate 6, guide pad 7, cavity plate 8, core model 9, lower die cylinder 10, lower fixed block 11, lower die holder 12, center lower push rod 13, outside lower push rod 14, cushion block 15, die sleeve 2 17, supporting block 18 etc..The present invention can greatly improve the draw ratio of blind hole, be widely used in the components such as steel alloy, aluminium alloy, magnesium alloy, copper alloy.
Description
Technical field
The present invention relates to a kind of open inner mold backward and forward extrusion composite dies.
Background technique
Currently, the hole depth of traditional backward extrusion is shorter, the inner hole draw ratio of general steel alloy is 3 or so, though traditional forward extrusion
The blind hole draw ratio of blank can so be increased, but the ratio of height to diameter of core model cannot too greatly (such as Fig. 1), otherwise core model can unstability.It passes
The method of the backward and forward extrusion of system is not able to satisfy the component forming with a depthkeeping blind hole.
Summary of the invention
The object of the present invention is to provide a kind of open inner mold backward and forward extrusion composite dies.
A kind of open inner mold backward and forward extrusion composite die, it is characterised in that: the mold includes indirect-extrusion mould and just squeezes
Compression mould；
The upper mold of indirect-extrusion mould includes punch-pin, punch-pin and Upper Die-sleeve cone match, the upper surface of punch-pin and upper padding plate
Lower end face contact, the upper surface of upper padding plate and the lower end face contact of upper die holder, are uniformly distributed upper top along central axis in upper die holder
Bar, the formed punch of punch-pin pass through the inner hole of punch case one and form clearance fit, and punch case one is connect by suspender with Upper Die-sleeve；
The lower die of indirect-extrusion mould includes cavity plate, is horizontally inserted into the bottom through-hole step groove of cavity plate and uniformly divides along axis
The outside lower push rod of cloth, then cavity plate is placed on the upper surface of lower die holder, the bar of outside lower push rod after the inner hole of lower die cylinder
Portion passes through the through-hole of lower die holder, cavity plate and lower die cylinder clearance fit, and core model is put into the inner cavity of cavity plate and forms clearance fit, in core
Guide pad, guide pad and cavity plate clearance fit are placed in the upper surface of mould, and pressing plate is contacted by step with guide pad, and passes through screw
Pressing plate and cavity plate are compressed, then lower fixed block is placed on to the upper surface of lower die holder, center Xia Ding after the through-hole of cavity plate
Bar passes through the through-hole groove of lower fixed block, and cushion block is placed on the upper surface of lower fixed block after the through-hole of core model.
The upper mold of forward extrusion mould includes that the upper mold of indirect-extrusion mould includes punch-pin, and punch-pin and Upper Die-sleeve cone match are convex
The upper surface of mould and the lower end face contact of upper padding plate, the upper surface of upper padding plate and the lower end face contact of upper die holder, in upper die holder
It is uniformly distributed upper ejector pin along central axis, the formed punch of punch-pin passes through the inner hole of punch case two and forms clearance fit, punch case two-way
Suspender is crossed to connect with Upper Die-sleeve；
The lower die of forward extrusion mould includes cavity plate, is horizontally inserted into the bottom through-hole step groove of cavity plate and uniformly divides along axis
The outside lower push rod of cloth, then cavity plate is placed on the upper surface of lower die holder after the inner hole of lower die cylinder, between cavity plate and lower die cylinder
Gap cooperation, core model are put into the inner cavity of cavity plate and form clearance fit, place guide pad, guide pad and cavity plate in the upper surface of core model
Clearance fit, pressing plate are contacted by step with guide pad, and are compressed pressing plate and cavity plate by screw, then wear lower fixed block
It crosses after the through-hole of cavity plate and is placed on the upper surface of lower die holder, center lower push rod passes through the through-hole groove of lower fixed block, and supporting block passes through
The centre of lower die holder and cavity plate is placed on after the inner hole formation clearance fit of lower die cylinder.
Open inner mold backward and forward extrusion complex method is first begin to before backward extrusion, and blank is placed on to the type chamber of core model
Inside, there are certain open spaces with cavity bottom for blank, before punch-pin downlink is contacted with blank, punch case one and guiding
Block forms guiding by mould orifice, with punch-pin continue traveling downwardly and suppress blank be full of downwards metal after bottom-type chamber along core model inner wall to
Upper flowing, after punch-pin runs the displacement for reaching design, punch-pin pressure maintaining is slack；Along the equally distributed outside lower push rod of axis
It drives cavity plate to move upwards, metal wall thickness reduction is promoted by the step surface of core model, when the step surface of core model is located at the straight of punch-pin
When on wall lower end surface, lower push rod stopping in outside is moved upwards；Then suspender is taken down, punch case one is unlocked with Upper Die-sleeve, edge
The equally distributed upper ejector pin pressure maintaining of axis, the upward backhaul of punch-pin, the pressure of upper ejector pin, which passes to punch case one, forces blank from convex
It falls off in mould, and completes feeding under the effect of the upper top of center lower push rod.
Then before starting forward extrusion, the intracavitary portion of the type that the blank of above-mentioned backward extrusion is placed on core model, in punch-pin downlink
Before contacting with blank, punch case two and guide pad form guiding by mould orifice, suspender are then taken down, by punch case two and Upper Die-sleeve solution
It opens, while the step face contact of the upper surface of punch case two and punch-pin, it is convex after the wall portion end face of punch case two and blank contacts
The pressure of mould, which passes to, to be forced after punch case two metal to flow downward necking down deformation occurs, at the same blank bottom progressively disengage it is convex
Mould, and certain open space is formed, after punch-pin runs the displacement for reaching design, punch-pin pressure maintaining is slack, then along axis
The equally distributed upper ejector pin pressure maintaining of line, the upward backhaul of punch-pin, the pressure of upper ejector pin, which passes to punch case two, forces blank from punch-pin
In fall off, and the upper top of center lower push rod effect under complete feeding.
It is thinning to increase backward extrusion wall thickness on the basis of traditional backward and forward extrusion by the present invention, and guarantees the platform at thinning position
New method of the component level on the straight wall of blank bottom provides blank for subsequent forward extrusion and prepares, while during solving forward extrusion
The problem of metal level flow bending unstability；Then in conjunction with novel forward extrusion wall thickness necking method, this method is not by conventional core
The limitation of mould length can greatly improve the draw ratio of blind hole.
Figure of description
Fig. 1 is traditional forward extrusion mould schematic diagram；
Fig. 2 is indirect-extrusion mould schematic diagram；
Fig. 3 is forward extrusion mould schematic diagram；
Fig. 4 a is the schematic diagram of backward extrusion downwards in the pressing process of backward extrusion；
Fig. 4 b be backward extrusion pressing process in subtract the schematic diagram of wall upwards；
Fig. 4 c is the schematic diagram of discharging in the pressing process of backward extrusion；
Fig. 5 a is positive schematic diagram in the pressing process of extrusion molding；
Fig. 5 b is positive the schematic diagram of discharging in the pressing process of extrusion molding；
Fig. 5 c is positive the schematic diagram of feeding in the pressing process of extrusion molding.
Wherein, 1- upper ejector pin；2- upper die holder；3- upper padding plate；4- Upper Die-sleeve；5- punch-pin；6- pressing plate；7- guide pad；8- is recessed
Mould；9- core model；10- lower die cylinder；Fixed block under 11-；12- lower die holder；The center 13- lower push rod；Lower push rod on the outside of 14-；15- pad
Block；16- punch case one；17- punch case two；18- supporting block.
Specific embodiment
With reference to the accompanying drawing, embodiments of the present invention will be described.
Fig. 2 show backward extruding die lamps structure, and the upper mold of indirect-extrusion mould includes punch-pin 5, punch-pin 5 and 4 conical surface of Upper Die-sleeve
Cooperation, the upper surface of punch-pin 5 and the lower end face contact of upper padding plate 3, the upper surface of upper padding plate 3 and the lower end face contact of upper die holder 2,
It is uniformly distributed upper ejector pin 1 along central axis in upper die holder 2, the formed punch of punch-pin 5 passes through the inner hole of punch case 1 and forms gap
Cooperation, punch case 1 are connect by suspender with Upper Die-sleeve 4.
The lower die of indirect-extrusion mould includes cavity plate 8, is horizontally inserted into the bottom through-hole step groove of cavity plate 8 uniform along axis
The outside lower push rod 14 of distribution, then cavity plate 8, which passes through, is placed on the upper surface of lower die holder 12 after the inner hole of lower die cylinder 10, under outside
The bar portion of mandril 14 passes through the through-hole of lower die holder 12, cavity plate 8 and 10 clearance fit of lower die cylinder, and core model 9 is put into the inner cavity of cavity plate 8 simultaneously
Clearance fit is formed, places guide pad 7, guide pad 7 and 8 clearance fit of cavity plate in the upper surface of core model 9, pressing plate 6 passes through step
It contacts with guide pad 7, and is compressed pressing plate 6 and cavity plate 8 by screw, after then through-hole that lower fixed block 11 is passed through to cavity plate 8
It is placed on the upper surface of lower die holder 12, center lower push rod 13 passes through the through-hole groove of lower fixed block 11, and cushion block 15 passes through the logical of core model 9
The upper surface of lower fixed block 11 is placed on behind hole.
Fig. 3 show forward extruding die lamps structure, the difference of the upper mold of the upper mold and indirect-extrusion mould of forward extrusion mould
It is, after being replaced punch case 1 with punch case 2 17, the formed punch of punch-pin 5 passes through the inner hole of punch case 2 17 and forms gap
Cooperation, punch case 2 17 are connect by suspender with Upper Die-sleeve 4.
The lower die of forward extrusion mould and the lower die of indirect-extrusion mould the difference is that, newly-increased supporting block 18 passes through down
The inner hole of mould cylinder 10 is placed on the centre of lower die holder 12 and cavity plate 8 after forming clearance fit, while cancelling outside 14 He of lower push rod
Cushion block 15.
The process of open inner mold backward and forward extrusion combined shaping, specifically includes that
(a) backward extrusion: being first begin to before backward extrusion, the intracavitary portion of the type that blank is placed on core model 9, blank and type bottom of chamber
There are certain open spaces in portion, and before 5 downlink of punch-pin is contacted with blank, punch case 1 forms die orifice with guide pad 7 and leads
To, it is flowed up as punch-pin 5 continues traveling downwardly and suppresses blank and be full of after bottom-type chamber metal downwards along the inner wall of core model 9, when
After the operation of punch-pin 5 reaches the displacement of design, 5 pressure maintaining of punch-pin is slack (such as Fig. 4 a)；
It drives cavity plate 8 to move upwards along the equally distributed outside lower push rod 14 of axis, gold is promoted by the step surface of core model 9
Belong to wall thickness reduction, when on the straight wall lower end surface that the step surface of core model 9 is located at punch-pin 5, outside lower push rod 14 stops transporting upwards
Dynamic (such as Fig. 4 b)；
Then suspender is taken down, punch case 1 and Upper Die-sleeve 4 are unlocked, it is convex along equally distributed 1 pressure maintaining of upper ejector pin of axis
The upward backhaul of mould 5, the pressure of upper ejector pin 1, which passes to punch case 1, forces blank to fall off from punch-pin 5, and in center lower push rod
13 upper top effect is lower to complete feeding (such as Fig. 4 c).
(b) forward extrusion: and then before starting forward extrusion, the intracavitary portion of the type that the blank of above-mentioned backward extrusion is placed on core model 9,
Before 5 downlink of punch-pin is contacted with blank, punch case 2 17 and guide pad 7 form guiding by mould orifice, suspender are then taken down, by punch-pin
Cover 2 17 to unlock with Upper Die-sleeve 4, while the step face contact of the upper surface of punch case 2 17 and punch-pin 5, when punch case 2 17 with
After the wall portion end face contact of blank, the pressure of punch-pin 5, which passes to, to be forced after punch case 2 17 metal to flow downward necking down change occurs
Shape, while blank bottom progressively disengages punch-pin 5, and forms certain open space, when punch-pin 5 runs the displacement for reaching and designing
Afterwards, 5 pressure maintaining of punch-pin is slack (such as Fig. 5 a)；
Then along equally distributed 1 pressure maintaining of upper ejector pin of axis, the upward backhaul of punch-pin 5, the pressure of upper ejector pin 1 passes to punch-pin
Covering 2 17 forces blank to fall off (such as Fig. 5 b) from punch-pin 5；
At this moment punch case 2 17 is connect with Upper Die-sleeve 4 with suspender again, with the further backhaul upwards of punch-pin 5, punch case
2 17 and punch-pin 5 be detached from lower die, later center lower push rod 13 upper top effect under complete feeding (such as Fig. 5 c).
Claims (1)
1. a kind of open inner mold backward and forward extrusion composite die, it is characterised in that: the mold includes indirect-extrusion mould and forward extrusion
Mold；
The upper mold of indirect-extrusion mould includes punch-pin, punch-pin and Upper Die-sleeve cone match, the upper surface of punch-pin and the lower end of upper padding plate
Face contact, the upper surface of upper padding plate and the lower end face contact of upper die holder, are uniformly distributed upper ejector pin along central axis in upper die holder, convex
The formed punch of mould passes through the inner hole of punch case one and forms clearance fit, and punch case one is connect by suspender with Upper Die-sleeve；
The lower die of indirect-extrusion mould includes cavity plate, is horizontally inserted into the bottom through-hole step groove of cavity plate equally distributed along axis
Outside lower push rod, then cavity plate is placed on the upper surface of lower die holder after the inner hole of lower die cylinder, and the bar portion of outside lower push rod is worn
The through-hole of lower die holder, cavity plate and lower die cylinder clearance fit are crossed, core model is put into the inner cavity of cavity plate and forms clearance fit, in core model
Guide pad, guide pad and cavity plate clearance fit are placed in upper surface, and pressing plate is contacted by step with guide pad, and will be pressed by screw
Plate and cavity plate compress, then lower fixed block is placed on to the upper surface of lower die holder after the through-hole of cavity plate, and center lower push rod is worn
The through-hole groove of fixed block is crossed down, cushion block is placed on the upper surface of lower fixed block after the through-hole of core model；
The upper mold of forward extrusion mould includes that the upper mold of indirect-extrusion mould includes punch-pin, punch-pin and Upper Die-sleeve cone match, punch-pin
The lower end face contact of upper surface and upper padding plate, the upper surface of upper padding plate and the lower end face contact of upper die holder, in upper die holder in
Mandrel is uniformly distributed upper ejector pin, and the formed punch of punch-pin passes through the inner hole of punch case two and forms clearance fit, and punch case two is by hanging
Tool is connect with Upper Die-sleeve；
The lower die of forward extrusion mould includes cavity plate, is horizontally inserted into the bottom through-hole step groove of cavity plate equally distributed along axis
Outside lower push rod, then cavity plate is placed on the upper surface of lower die holder after the inner hole of lower die cylinder, and cavity plate is matched with lower die cylinder gap
It closes, core model is put into the inner cavity of cavity plate and forms clearance fit, places guide pad, guide pad and cavity plate gap in the upper surface of core model
Cooperation, pressing plate are contacted by step with guide pad, and are compressed pressing plate and cavity plate by screw, are then passed through lower fixed block recessed
The upper surface of lower die holder is placed on after the through-hole of mould, center lower push rod passes through the through-hole groove of lower fixed block, and supporting block passes through lower die
The centre of lower die holder and cavity plate is placed on after the inner hole formation clearance fit of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810744243.4A CN108941233B (en) | 2018-07-09 | 2018-07-09 | Open internal type forward and backward extrusion composite die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810744243.4A CN108941233B (en) | 2018-07-09 | 2018-07-09 | Open internal type forward and backward extrusion composite die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108941233A true CN108941233A (en) | 2018-12-07 |
| CN108941233B CN108941233B (en) | 2020-04-07 |
Family
ID=64482369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810744243.4A Active CN108941233B (en) | 2018-07-09 | 2018-07-09 | Open internal type forward and backward extrusion composite die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108941233B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369326A (en) * | 2021-06-11 | 2021-09-10 | 中国兵器工业第五九研究所 | Open inner type progressive extrusion forming die based on current auxiliary heating |
| CN113976799A (en) * | 2021-11-10 | 2022-01-28 | 中国兵器工业集团航空弹药研究院有限公司 | Forging and forming die |
| CN114247814A (en) * | 2021-12-23 | 2022-03-29 | 湖南顶立科技有限公司 | Extrusion forming device and die pressing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR906285A (en) * | 1943-05-31 | 1945-12-28 | Miller Martin Ag | Method of manufacturing steel sleeves and apparatus for its implementation |
| CN101234401A (en) * | 2008-03-06 | 2008-08-06 | 中北大学 | Magnesium alloy automobile wheel extrusion molding method and mold |
| CN101502855A (en) * | 2009-03-02 | 2009-08-12 | 湖北天轮机械有限公司 | Reverse cold extrusion mold for car rear transversal stabilizer bar casing tube |
| CN101518793A (en) * | 2009-03-26 | 2009-09-02 | 陈志波 | Cold extruding and forming process of lower oil cylinder of manual porter |
| CN101829698A (en) * | 2010-03-30 | 2010-09-15 | 河南科技大学 | Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould |
| CN104841708A (en) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | Extrusion forming process of cylinder work-piece with flat head on end portion |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
| CN205869092U (en) * | 2016-04-19 | 2017-01-11 | 镇江索达联轴器有限公司 | Preparation shaft coupling cold extruding die for coupling spindle |
-
2018
- 2018-07-09 CN CN201810744243.4A patent/CN108941233B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR906285A (en) * | 1943-05-31 | 1945-12-28 | Miller Martin Ag | Method of manufacturing steel sleeves and apparatus for its implementation |
| CN101234401A (en) * | 2008-03-06 | 2008-08-06 | 中北大学 | Magnesium alloy automobile wheel extrusion molding method and mold |
| CN101502855A (en) * | 2009-03-02 | 2009-08-12 | 湖北天轮机械有限公司 | Reverse cold extrusion mold for car rear transversal stabilizer bar casing tube |
| CN101518793A (en) * | 2009-03-26 | 2009-09-02 | 陈志波 | Cold extruding and forming process of lower oil cylinder of manual porter |
| CN101829698A (en) * | 2010-03-30 | 2010-09-15 | 河南科技大学 | Extrusion forming process of thin-wall long pipe-shaped part blank with flange and mould |
| CN104841708A (en) * | 2014-02-17 | 2015-08-19 | 苏州昆仑重型装备制造有限公司 | Extrusion forming process of cylinder work-piece with flat head on end portion |
| CN205869092U (en) * | 2016-04-19 | 2017-01-11 | 镇江索达联轴器有限公司 | Preparation shaft coupling cold extruding die for coupling spindle |
| CN105880308A (en) * | 2016-05-13 | 2016-08-24 | 河南平高电力设备有限公司 | Two-time extruding die of moving contact and secondary-extruding die thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369326A (en) * | 2021-06-11 | 2021-09-10 | 中国兵器工业第五九研究所 | Open inner type progressive extrusion forming die based on current auxiliary heating |
| CN113976799A (en) * | 2021-11-10 | 2022-01-28 | 中国兵器工业集团航空弹药研究院有限公司 | Forging and forming die |
| CN113976799B (en) * | 2021-11-10 | 2024-03-01 | 中国兵器工业集团航空弹药研究院有限公司 | Forging forming die |
| CN114247814A (en) * | 2021-12-23 | 2022-03-29 | 湖南顶立科技有限公司 | Extrusion forming device and die pressing method |
| CN114247814B (en) * | 2021-12-23 | 2023-12-05 | 湖南顶立科技有限公司 | Extrusion molding device and molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108941233B (en) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108927416B (en) | A kind of open inner mold backward and forward extrusion combined shaping method | |
| CN108941233A (en) | A kind of open inner mold backward and forward extrusion composite die | |
| CN103537500B (en) | Extrusion and molding method for cup-shaped part and special extrusion die | |
| CN103331444A (en) | Compression forming mold for sintered metal product, application thereof and forming mold release method | |
| CN105880308A (en) | Two-time extruding die of moving contact and secondary-extruding die thereof | |
| CN105618665B (en) | One kind takes out hole bolt plastic forming method | |
| CN106140961A (en) | Shape deburring composite die | |
| CN110238344A (en) | Wheel hub forming device | |
| CN103567338A (en) | Metal element manufacturing method | |
| CN107186160B (en) | The quiet two step forming process of disk of new-energy automotive air-conditioning compressor | |
| CN104014605B (en) | The equilateral reverse anti-extruding process of three-jaw flange sliding sleeve and reverse anti-extruding mold | |
| CN110238343A (en) | Wheel hub manufacturing process | |
| CN204524019U (en) | Shaft-cup shaping dies | |
| CN111889531B (en) | Positive and negative extrusion forming die and forming method for curved bus type shell | |
| CN203737815U (en) | Thick material extrusion draw hole stamping die | |
| CN105855311B (en) | A kind of method for eliminating the recessed Magen David cold-extruded cracking in energy accumulator housing bottom | |
| CN107649586B (en) | It is a kind of for circular cone involucrum shaping dies and its manufacturing process of circular cone involucrum | |
| CN203316719U (en) | Compression forming mould for powder metallurgical products | |
| CN216065376U (en) | Closed forging die of abnormal shape flange forging | |
| JP3690780B2 (en) | Processing method of bevel gear having boss part and die thereof | |
| KR101642043B1 (en) | pipe end coupling and Manufacture method | |
| CN208374093U (en) | The cold-extruded upsetting mold of square head column stopper | |
| CN208341538U (en) | A kind of high-strength plate stringer the left and right parts using one die shaping dies | |
| CN206464436U (en) | A kind of new flange mold | |
| CN102114497B (en) | Specially-shaped extruding female die of aluminium alloy seamless gas cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240313 Address after: 400039 Chongqing Jiulongpo Yuzhou Road No. 33 Patentee after: Southwest Institute of technology and engineering of China Ordnance Equipment Group Country or region after: China Address before: 400039 Chongqing Jiulongpo Yuzhou Road No. 33 Patentee before: NO 59 Research Institute OF CHINA ORDNACE INDUSTRY Country or region before: China |