CN201728321U - Extrusion upsetting mold - Google Patents
Extrusion upsetting mold Download PDFInfo
- Publication number
- CN201728321U CN201728321U CN2010202487067U CN201020248706U CN201728321U CN 201728321 U CN201728321 U CN 201728321U CN 2010202487067 U CN2010202487067 U CN 2010202487067U CN 201020248706 U CN201020248706 U CN 201020248706U CN 201728321 U CN201728321 U CN 201728321U
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- Prior art keywords
- jumping
- upsetting
- blank
- chamber
- mold core
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Abstract
The utility model provides an extrusion upsetting mold, which comprises an upper mold plate assembly, a lower mold plate assembly, a punch, a mold core and an upsetting cavity, an upper half upsetting cavity and a lower half upsetting cavity are suitably closed to form the upsetting cavity, and the ratio of the internal overall height of the upsetting cavity to the diameter of a discharge through hole is less than the ultimate upsetting ratio of a blank to be upset. The structure of the extrusion upsetting mold is simple, the upset part and shape can be accurately controlled, flashes cannot be produced, forging defects cannot occur even if the blank to be upset exceeds the regular ultimate upsetting ratio by nearly 100 percent, the size and shape required by the middle upsetting of the blank can be achieved by one step of extrusion upsetting, the local forging of the blank is realized, the utilization rate of material is increased, and the production cost is reduced.
Description
Technical field
The utility model relates to the metal forging technical field of mold, relates to a kind of mould, particularly, relates to a kind of mould that is used for pushing jumping-up technology.
Background technology
Jumping-up is a kind of conventional process of forging processing, forges in the processing in open die forging, die forging and extruding etc., all can use the operation of jumping-up.According to existing technical data, the limit of jumping-up is forged and slightly is no more than 2.5 than maximum, (upset ratio is the ratio of the blank diameter before blank length and the jumping-up before the jumping-up), surpass 2.5 upset ratio, forging can produce twin drum deformation shape during jumping-up, forge folding phenomenon and in continuing deformation process, will produce, thereby cause forging to scrap.If upset ratio surpasses 3.5, the phenomenon of forging unstability also may take place, so the jumping-up ratio that general jumping-up technology is got is between 0.8 to 2.2.
Yet the upset ratio of the jumping-up technology of metal bar forging head all surpasses 2.5 usually, so the forging head is easy to occur above-mentioned twin drum deformation shape or folding phenomenon.In the prior art, generally adopt the method for twice jumping-up or use the upsetter jumping-up to solve, thereby cause production efficiency to reduce, cost is higher.In addition, can also be with forging heating back by forcing press and jumping-up open die end jumping-up to forging, and then machining, this jumping-up open die is because it has only simple fixation to forging, therefore can only carry out the end jumping-up to forging, and can not carry out jumping-up to the middle part of forging, and there is overlap at the jumping-up position.
In addition, Chinese patent application number has disclosed a kind of jumping-up technology by " the metal bar local heat jumping-up enclosed low-cost die " of CN200720188529.6 and is used and work as mould structure.It discloses a kind of metal bar local heat jumping-up enclosed low-cost die, it is made of die shoe, core rod, patrix, bottom knockout bar, last ejector beam, in core rod, be provided with core rod bar hole, the jumping-up chamber is established on top in core rod bar hole, when patrix is moved down into lower dead center, form the jumping-up chamber of enclosed.Although this patent is provided with a jumping-up chamber in described core rod bar hole, but this jumping-up chamber is to exist in order to control jumping-up position and elimination overlap, its jumping-up principle still is to utilize the forging part heated to carry out jumping-up, does not relate to the technology contents that forging is carried out jumping-up according to the jumping-up chamber of the limit upset ratio design special shape of forging.
The utility model content
Problem to be solved in the utility model is: the problem at above-mentioned existence provides a kind of extruding jumping-up mould that can carry out jumping-up to metal bar above the limit upset ratio of its material own.
The technical scheme that the utility model adopted is: a kind of extruding jumping-up mould comprises: the cope match-plate pattern assembly, and it is arranged on the top of mould; The lower bolster assembly, it is arranged on the bottom of mould; Drift, it is fixed on the described cope match-plate pattern assembly; It is characterized in that, also comprise: core rod, described core rod is made up of upper mold core and lower mold core; Described upper mold core is connected on the described cope match-plate pattern assembly, and can move up and down by described relatively cope match-plate pattern assembly, be provided with below corresponding with described drift one with blank to be upsetting be complementary on the blowing through hole, on described the blowing through hole below, described upper mold core bottom fovea superior forms first jumping-up chamber; Described lower mold core is arranged on the described lower bolster assembly, below corresponding with described first jumping-up chamber, second jumping-up chamber of the recessed formation in described lower mold core top, the below in described second jumping-up chamber be provided with one with the described corresponding material through hole of transferring of blowing through hole of going up, describedly go up the blowing through hole and transfer material through hole and form the blowing through hole; The jumping-up chamber, it forms by described first jumping-up chamber and second jumping-up chamber are closed matchingly, and the ratio of the inner body height in described jumping-up chamber and the diameter of blowing through hole (actual upset compares) is less than the limit upset ratio of blank to be upsetting.
Preferably, the volume in described jumping-up chamber is V, and the sectional area of described blowing through hole is that S, diameter are D, and the limit upset ratio of blank to be upsetting is K
1, V 〉=S * D * K then
1, guaranteeing blank in carrying out the jumping-up technology of upset ratio when equaling limit upset ratio, the volume in described jumping-up chamber is enough to hold the blank behind the jumping-up.
Further, between described upper mold core and cope match-plate pattern assembly, be provided with spring, described spring props up described upper mold core and cope match-plate pattern assembly up and down and is in compressive state, thereby make described upper mold core have the trend that moves downward all the time, influence the obturation effect in jumping-up chamber to avoid in upsetting process, moving on the upper mold core, avoided blank generation overlap in upsetting process.
Preferably, described upper mold core is connected on the described cope match-plate pattern assembly by some bolts, the bottom of described bolt and described upper mold core fix, the top of described bolt and described cope match-plate pattern assembly flexibly connect, make the described relatively cope match-plate pattern assembly of described upper mold core to move up and down, thereby can realize mould die sinking and matched moulds work easily.
Preferably, described lower bolster assembly withstands blank to be upsetting by an ejector beam is set, and to reduce in the upsetting process wearing and tearing of lower bolster assembly is influenced upsetting process.
Preferably, the ratio of the inner body height in described jumping-up chamber and the diameter of blank to be upsetting is smaller or equal to 2.5, more preferably, the ratio of diameter of the inner body height in described jumping-up chamber and blank to be upsetting smaller or equal to 2.2.In this upset ratio scope, can control blank to be upsetting more satisfactoryly and in upsetting process, avoid occurring phenomenons such as twin drum deformation shape or folding phenomenon.
Compared with prior art, the extruding jumping-up forming die structure that the utility model provides is simple, jumping-up position and shape precise control, and can not produce overlap, though blank to be upsetting itself surpassed conventional limit upset ratio nearly one times forging defect can not appear; In upsetting process, can just can finish the required desired size and shape of middle part jumping-up of blank by once pushing jumping-up in conjunction with the technology of extruding in the prior art with jumping-up; Realized the part forging of blank, improved the utilization rate of material, thereby reduced production cost by the energy that reduces streamline workman, machine and consumption required in the technological process.
Description of drawings
Fig. 1 shows the structural representation of extruding jumping-up mould under the matched moulds state that the utility model provides.
Fig. 2 shows the structural representation of extruding jumping-up mould of the present utility model behind the die sinking blowing.
Fig. 3 shows the structural representation of extruding jumping-up mould of the present utility model after the jumping-up operation is finished.
Fig. 4 shows the front view of the lower mold core of extruding jumping-up mould of the present utility model.
Fig. 5 shows the side view of the lower mold core of extruding jumping-up mould of the present utility model.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing:
Embodiment 1: to shown in Figure 5, the extruding jumping-up mould in the present embodiment comprises cope match-plate pattern assembly 6, lower bolster assembly 7, drift 8 and core rod as Fig. 1.Cope match-plate pattern assembly 6 and lower bolster assembly 7 are installed on the workbench, and cope match-plate pattern assembly 6 is arranged on the top of mould, and lower bolster assembly 7 is arranged on the bottom of mould, thereby play the fixed installation effect to mold integral.
Core rod is arranged on the lower bolster assembly 7, and it is made up of upper mold core 1 and lower mold core 2.Be provided with a blowing through hole 3 that is complementary with blank 12 to be upsetting that be positioned at drift 8 belows in the core rod.
Below corresponding with drift 8, upper mold core 1 is provided with a last blowing through hole that is complementary with blank 12 to be upsetting, and below last blowing through hole, upper mold core 1 bottom fovea superior forms first jumping-up chamber.The bottom of upper mold core 1 and four hexagon socket head cap screws 13 fixes, bolt 13 tops and cope match-plate pattern assembly 6 flexibly connect, for example cope match-plate pattern assembly bottom is provided with the restriction portion that the head of restriction bolt 13 moves down, make head at bolt 13 be positioned under the situation above the restriction portion, upper mold core 1 can move up and down with respect to cope match-plate pattern assembly 6.Be provided with four springs 9 between upper mold core 1 and the cope match-plate pattern assembly 6, spring 9 preferably is enclosed within on the hexagon socket head cap screw 13 and is in compressive state, the compression stress that produces makes upper mold core 1 can fit tightly with lower mold core 2 when the matched moulds jumping-up is worked, thereby has avoided blank generation overlap in upsetting process effectively.
The jumping-up chamber forms by first jumping-up chamber and second jumping-up chamber are closed matchingly, and the ratio of the inner body height in jumping-up chamber and the diameter of blowing through hole (being the diameter of blank to be upsetting) (actual upset compares) is less than the limit upset ratio of blank to be upsetting.
Preferably, the actual upset of the internal height in jumping-up chamber and the diameter of blank 12 to be upsetting (is that blank is under common jumping-up technology than (i.e. blank partial-length and diameter ratio in the jumping-up chamber) less than the limit upset ratio of blank 12 to be upsetting, blank overall length and diameter ratio when phenomenons such as jumping-up folded deformation can not take place material), preferably the value of actual upset ratio is smaller or equal to 2.5, more preferably smaller or equal to 2.2, to guarantee in upsetting process, can there be defective.It will be appreciated by those skilled in the art that limit upset ratio is to determine according to material, structure and the shape of product itself,, forging defect can take place when the upset ratio that blank 12 materials is carried out jumping-up during greater than its limit upset ratio.If the volume in jumping-up chamber is V, the sectional area of blowing through hole is that S, diameter are D, and the limit upset ratio of blank to be upsetting is K
1, V 〉=S * D * K then
1Further, the volume of establishing the jumping-up chamber is V, and the sectional area of blowing through hole is S, and bottom, second jumping-up chamber is H to the height of presetting lower dead center, then V 〉=S * H preferably.
Embodiment 2: when utilizing the utility model to carry out jumping-up technology, particularly, it is used above-mentioned extruding jumping-up mould and carries out jumping-up, and step is as follows: blanking, heating, blowing, jumping-up.Particularly, blanking is according to the one section length-specific of needs intercepting of forging product and the blank to be upsetting 12 in cross section; Heating is to need the part of jumping-up to heat blank 12 to be upsetting; Blowing is blank 12 to be upsetting to be put into transfer material through hole 3, upper mold core 1 down move until with lower mold core 2 closures; Jumping-up is that drift 8 moves downward and push blank to be upsetting, and after jumping-up was finished, cope match-plate pattern assembly 6 drive upper mold core 1 moved upward and carry out die sinking, take out the intact blank of jumping-up under the die sinking situation.
Particularly, blank to be upsetting 12 (rod member) that at first will jumping-up is put into lower mold core 2, and equipment is started working.Then, upper mold core 1 is down moved the top of blank 12 to be upsetting is fixed, and drift 8 begins to push the blank to be upsetting 12 in the blowing through hole 3, blank material is down pushed, material production jumping-up distortion in the jumping-up chamber, along with equipment down moves, blank material constantly is extruded in the jumping-up chamber.Move to the position of presetting lower dead center up to drift 8, the distortion of extruding jumping-up finishes.End-use device up moves, and under the die sinking situation, takes out the good rod member part of jumping-up.
,, move downward by drift 8 in upsetting process to shown in Figure 3 in conjunction with Fig. 1, constantly extrded material moves downward, and is expressed in the jumping-up deformed area, finishes upsetting process.Because the material in the jumping-up district is constantly by jumping-up, it is increasing that diameter will become, thereby make the actual upset ratio become more and more littler, therefore more can in the process of extruding jumping-up, not produce the jumping-up folded deformation, up to drift 8 material all is expressed in the jumping-up deformed area, whole extruding jumping-up operation is finished.For example will then need the rod member head by 16mm * 87mm is carried out jumping-up with the rod member head jumping-up of diameter 16mm to the size and shape that blank requires, upset ratio is 87/16=5.43, the maximum upset ratio 2.5 that allows considerably beyond common jumping-up.In the utility model, preferably, the height in design jumping-up chamber is 30.8mm, makes actual upset than for 30.8/16=1.925≤2.5, therefore, in the upsetting process, can not produce the jumping-up folded deformation.By moving downward of equipment, drift 8 continuous extrded materials move downward, and are expressed in the jumping-up deformed area, finish upsetting process.By jumping-up, it is increasing that diameter will become, thereby make upset ratio become more and more littler because of constantly for material in the jumping-up chamber simultaneously, therefore, more can not produce phenomenons such as jumping-up folded deformation in the process of extruding jumping-up, runs to lower dead center up to equipment.
Further, in carrying out head jumping-up processing step process,, move to the default lower dead center in jumping-up chamber until drift 8, thereby once finish extruding jumping-up technology blank because drift 8 is to continue extruding blank to be upsetting.It will be appreciated by those skilled in the art that and use common method for upsetting, impossible upsetting formation needs two to three times jumping-up at least, just can reach requirement, folds otherwise blank will produce forging.In the utility model, adopted in conjunction with the process of extruding with jumping-up, only need once push the size and shape that jumping-up just can reach the forging requirement, even the overall upset ratio of blank (the jumping-up ratio generally of the blank jumping-up in the jumping-up technology that the utility model carries out, be the blank overall length and the ratio of blank diameter) surpassed one times of limit upset ratio nearly, forging defect can not appear.
Further, the blank after finishing present embodiment jumping-up technology is being carried out in the Forging Technology process, only the head to the blank behind the jumping-up carries out conducting forging processing.Because the restriction of mould, behind the blank jumping-up except that the head jumping-up other parts the situation that overlap etc. needs conducting forging processing does not take place, therefore in the utility model, only need carry out conducting forging processing to the head of blank and can reach required technological requirement.
In addition, the spherical shell part uses extruding heading technology, has satisfied the condition of local forging, and promptly the head to blank carries out the part forging, and bar portion adopts cold bending.The stock utilization of forging brings up to 94.4% from original 66%, every can economical with materials 0.23kg, can the economical with materials expense 1.04 yuan, forging line reduces to 3 people from 7 original people, use equipment is from one of original forging roll, towards 1 of 3 in car and 400T friction press, be reduced to 1 of 2 of punch presses and 300t hydraulic press, heating in medium frequency stove power is reduced to 50kw from original 150kw.Greatly reduced equipment cost, grid electricity fee cost and the workman's cost produced, total can reduce expenses 1.89 yuan/more than the part, annually can save 37.8 ten thousand yuan of costs by 200,000 calculating of production part of the same race, have very big economic benefit.
Claims (7)
1. one kind is pushed the jumping-up mould, comprising:
The cope match-plate pattern assembly, it is arranged on the top of mould;
The lower bolster assembly, it is arranged on the bottom of mould;
Drift, it is fixed on the described cope match-plate pattern assembly;
It is characterized in that, also comprise:
Core rod, described core rod is made up of upper mold core and lower mold core;
Described upper mold core is connected on the described cope match-plate pattern assembly, and can move up and down by described relatively cope match-plate pattern assembly, be provided with below corresponding with described drift one with blank to be upsetting be complementary on the blowing through hole, on described the blowing through hole below, described upper mold core bottom fovea superior forms first jumping-up chamber;
Described lower mold core is arranged on the described lower bolster assembly, below corresponding with described first jumping-up chamber, second jumping-up chamber of the recessed formation in described lower mold core top, the below in described second jumping-up chamber be provided with one with the described corresponding material through hole of transferring of blowing through hole of going up, describedly go up the blowing through hole and transfer material through hole and form the blowing through hole;
The jumping-up chamber, it forms by described first jumping-up chamber and second jumping-up chamber are closed matchingly, and the ratio of the inner body height in described jumping-up chamber and the diameter of blowing through hole is less than the limit upset ratio of blank to be upsetting.
2. extruding jumping-up mould according to claim 1 is characterized in that the volume in described jumping-up chamber is V, and the sectional area of described blowing through hole is that S, diameter are D, and the limit upset ratio of blank to be upsetting is K
1, V 〉=S * D * K then
1
3. extruding jumping-up mould according to claim 1 and 2 is characterized in that, is provided with spring between described upper mold core and cope match-plate pattern assembly, and described spring props up described upper mold core and cope match-plate pattern assembly up and down and is in compressive state.
4. extruding jumping-up mould according to claim 1 and 2, it is characterized in that, described upper mold core is connected on the described cope match-plate pattern assembly by some bolts, the bottom of described bolt and described upper mold core fix, the top of described bolt and described cope match-plate pattern assembly flexibly connect, and make the described relatively cope match-plate pattern assembly of described upper mold core to move up and down.
5. extruding jumping-up mould according to claim 1 and 2 is characterized in that, described lower bolster assembly withstands blank to be upsetting by an ejector beam is set.
6. extruding jumping-up mould according to claim 1 and 2 is characterized in that, the ratio of the inner body height in described jumping-up chamber and the diameter of blank to be upsetting is smaller or equal to 2.5.
7. extruding jumping-up mould according to claim 1 and 2 is characterized in that, the ratio of the inner body height in described jumping-up chamber and the diameter of blank to be upsetting is smaller or equal to 2.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202487067U CN201728321U (en) | 2010-06-29 | 2010-06-29 | Extrusion upsetting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202487067U CN201728321U (en) | 2010-06-29 | 2010-06-29 | Extrusion upsetting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728321U true CN201728321U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202487067U Expired - Lifetime CN201728321U (en) | 2010-06-29 | 2010-06-29 | Extrusion upsetting mold |
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| Country | Link |
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| CN (1) | CN201728321U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912939A (en) * | 2010-06-29 | 2010-12-15 | 宁波锐泰机械制造有限公司 | Extruding, upsetting and moulding die and corresponding upsetting method |
| CN110538958A (en) * | 2019-09-29 | 2019-12-06 | 安庆市兴业精工机械有限公司 | Pin shaft step forging forming die and pin shaft step machining method |
-
2010
- 2010-06-29 CN CN2010202487067U patent/CN201728321U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912939A (en) * | 2010-06-29 | 2010-12-15 | 宁波锐泰机械制造有限公司 | Extruding, upsetting and moulding die and corresponding upsetting method |
| CN101912939B (en) * | 2010-06-29 | 2013-01-02 | 浙江锐泰悬挂系统科技有限公司 | Extruding, upsetting and moulding die and corresponding upsetting method |
| CN110538958A (en) * | 2019-09-29 | 2019-12-06 | 安庆市兴业精工机械有限公司 | Pin shaft step forging forming die and pin shaft step machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG RUITAI SUSPENSION SYSTEM TECHNOLOGY LTD. Free format text: FORMER NAME: NINGBO RUITAI MACHINERY MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315511, Zhejiang, Fenghua Province, Tian Ting Ji Ling Development Zone, No. 1 Patentee after: Ningbo Ruitai Machinery Manufacturing Co., Ltd. Address before: 315511, Zhejiang, Fenghua Province, Tian Ting Ji Ling Development Zone, No. 1 Patentee before: Ningbo Ruitai Machinery Manufacturing Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110202 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |