CN203610587U - T-iron middle-hole cold-forging mould - Google Patents
T-iron middle-hole cold-forging mould Download PDFInfo
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- CN203610587U CN203610587U CN201320727283.0U CN201320727283U CN203610587U CN 203610587 U CN203610587 U CN 203610587U CN 201320727283 U CN201320727283 U CN 201320727283U CN 203610587 U CN203610587 U CN 203610587U
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Abstract
The utility model relates to the technical field of moulds and discloses a T-iron middle-hole cold-forging mould. The T-iron middle-hole cold-forging mould comprises an upper mould and a lower mould, wherein the upper mould is provided with an upper-mould cavity, the lower mould is provided with a lower-mould cavity, an upper-mould cavity pressing block is installed in the upper-mould cavity of the upper mould, a lower-mould cavity pressing block is installed in the lower-mould cavity of the lower mould, a thimble which can upwards and downwards move is also arranged in the lower-mould cavity pressing block, a blank is arranged between the upper-mould cavity pressing block and the lower-mould cavity pressing block, and an accommodating space is arranged in the blank and is used for accommodating redundant materials in the cold precision forging process of the upper mould which moves relative to the lower mould. Because the accommodating space is arranged in the T-iron middle-hole cold-forging mould, the flow distribution of the redundant cold-forging materials can be realized, and therefore, on one hand, the pressure stability in a middle cold-forging cavity is guaranteed, the dimensional accuracy is improved, and the service life of the mould is prolonged; on the other hand, the waste of the materials is reduced; meanwhile, the machining working procedure for the magnetic core and the plate surface of the blank after cold precision forging is also omitted, so that the production efficiency is greatly improved, and the T-iron middle-hole cold-forging mould has quite high economic benefit.
Description
Technical field
The utility model relates to technical field of mold, more particularly, and particularly a kind of forging mesopore cold forging die of T iron.
Background technology
T ferromagnetic core is the Hardware fitting of electroacoustic trumpet, because of core shapes similar to capitalization English letter T word, therefore claim T iron.Early stage T iron is many to be formed by rear plate and magnetic core riveted, is called split type T iron.Along with the development of cold-heading technology and the maturation of alramenting saponification technology, modern T iron mostly is the structure of true integral type.Its advantage is: feed consumption is few, and stock utilization reaches more than 90%, can realize without turning processing, and cost is low, and good manufacturability, precision is high, and tonequality is stable etc.
The post core of huge pillar core T iron is larger, and thickness of slab is thicker, and post core multi-band has mesopore to alleviate the weight of self.Most huge pillar core T iron weight all more than 1 kilogram, adopts the mode of cold heading technique (30 ℃ of following normal temperature) to produce can to reduce loss and the minimizing machine of approximately 30% material to add surplus, and the product even having can be without complete without machined; But if adopt thermal forging technology (being heated to more than 830 ℃) because of thermal deformation and surface high-temp oxidation, the product of producing all will carry out machined, cold-forging technique has increased a large amount of machined expenses relatively, so T iron general expense that adopts the mode of cold-heading to reduce production costs in the time designing and developing.
And because the product weight of huge pillar core T iron is larger, larger at saw material link blanking deviation of weight, the while because annealing hardness has deviation, causes the shape obtaining under same pressure environment to have deviation in annealing process.
The feature of T iron is that the required precision of post core is very high, above has back of the body convex closure, and there is groove at post root place.Post core place has mould just to form the local existing picture of envelope that closes like this, and the deviation of and hardness heavy due to material.Under same pressure environment, cannot shunt as material unnecessary in shape chamber, can cause the bursting apart of unstable or mould of dimensional accuracy.
The production technology of existing T iron comprises: the sliding ?of saw material ?spray sand ?phosphatization saponification profit press a ?move back the sliding ?of fiery ?spray sand ?phosphatization saponification profit press flat ?move back the sliding ?one-tenth of fiery ?spray sand ?phosphatization saponification profit type ?car outward round ?bore in the perverse ?electricity of hole ?cleaning hair plating ?packing.And for above-mentioned problem, in prior art, the main method adopting is: after (moulding process) cold-heading, the method for Vehicle Processing center pillar guarantees the dimensional accuracy of product, the shortcoming of doing is like this: material deterioration inside is many, mach expense is also very high, and because material unnecessary in shape chamber cannot be shunted, build-up of pressure unstable, also to having a great impact die life.Therefore, need to seek a kind of new cold forging die and solve the problems referred to above.
Utility model content
The purpose of this utility model is to provide a kind of and reduces spillage of material, make Die pressure stability and can extend the forging mesopore cold forging die of the T iron of die life.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of forging mesopore cold forging die of T iron, comprise the patrix that is provided with upper cavity and the counterdie that is provided with lower mode cavity, upper cavity briquetting is installed in the upper cavity of described patrix, lower mode cavity briquetting is installed in the lower mode cavity of described counterdie, in described lower mode cavity briquetting, be also provided with thimble moving up and down, between described upper cavity briquetting and lower mode cavity briquetting, be provided with blank, described blank is provided with accommodation space, and this accommodation space is for accommodating unnecessary material at patrix with respect to the cold closed-die forging process of counterdie motion.
Preferably, described accommodation space is the tap hole of being located at the end of blank.
Preferably, the top of described thimble is also provided with the jacking block corresponding with the tap hole of described blank end.
Preferably, the first drive unit that drives this patrix to move up and down is also installed on described patrix, on described counterdie, is also provided with the second drive unit that drives described thimble to move up and down.
Preferably, the cross sectional shape of described tap hole is circular.
Compared with prior art, the utility model has the advantage of: on the blank of the utility model between upper die and lower die, be provided with the accommodation space of accommodating material unnecessary in blank cold closed-die forging process, can make the unnecessary material of cold forging realize shunting, on the one hand, guarantee the pressure stability in shape chamber in cold forging, improve dimensional accuracy, extend the service life of mould, on the other hand, reduce the consume of material, also omit the magnetic core and the plate face that after cold closed-die forging, need blank simultaneously and carried out mach operation, greatly improve production efficiency, there is very high economic benefit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structure chart of the forging mesopore cold forging die of T iron described in the utility model.
Fig. 2 is the structure chart of the blank matrix that adopts in the forging mesopore cold forging die of T iron described in the utility model.
Description of reference numerals: 1, patrix, 2, upper cavity briquetting, 3, T ironworker's part, 4, counterdie, 5, lower mode cavity briquetting, 6, tap hole, 7, thimble, 8, blank.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Consult shown in Fig. 1, the forging mesopore cold forging die of a kind of T iron that the utility model provides, comprise the patrix 1 that is provided with upper cavity and the counterdie 4 that is provided with lower mode cavity, in the upper cavity of described patrix 1, upper cavity briquetting 2 is installed, in the lower mode cavity of described counterdie 4, lower mode cavity briquetting 5 is installed, in described lower mode cavity briquetting 5, be also provided with thimble 7 moving up and down, between described upper cavity briquetting 2 and lower mode cavity briquetting 5, be provided with blank 8, described blank 8 is provided with accommodation space, this accommodation space is accommodated unnecessary material for the cold closed-die forging process of moving with respect to counterdie 4 at patrix 1.
Concrete, to consult shown in Fig. 2, described accommodation space is the tap hole 6 of being located at the end of blank 8, the cross sectional shape of described tap hole 6 is circular, or other shapes all do not affect enforcement of the present utility model.
And, be also provided with the jacking block corresponding with the tap hole 6 of described blank 8 ends at the top of thimble 7, can adopt like this jacking block of thimble 7 to squeeze out tap hole 6 in the end of blank 8.As preferably, the utility model is also also provided with the first drive unit that drives this patrix 1 to move up and down on described patrix 1, is also provided with the second drive unit that drives described thimble 7 to move up and down on described counterdie 4; The first described drive unit and the second drive unit can be fluid pressure drive device or other drive units.
Concrete, below by computer simulation, the scheme that is not provided with tap hole with prior art that is provided with tap hole in the utility model is compared, simulation steps specifically comprises: first, adopt three-dimensional graphics software (as PRO/E) draw as described in the 3D sterogram of blank 8 and mould, magnetic core end at described blank 8 is provided with tap hole 6, and saves as TSL form; Then, the 3D sterogram of the blank of above-mentioned TSL form and mould is imported after Deform3D software, generating mesh, then adopt cold forging mode to forge after geometrical model and primary condition are set.Wherein, the geometrical model of described blank is No. 10 steel, and the geometrical model of described mould is rigidity, and described blank and the coefficient of friction of mould are 0.13, and the patrix translational speed of described mould is 220 mm/second.
Do not have the grid tangent plane blank of tap hole to flow and when mould stress curve analyzes, the filling pressure line of force is poly-in its stress curve shape chamber so rises.Walk to expect that difficulty has retardance, forging process is unreasonable, and unnecessary material cannot be shunted, and particularly pressure curve is suddenly and approaches an angle of 90 degrees and rise, and easily causes the unstable and mould of size to burst apart.
And when the grid tangent plane blank that has tap hole flows and mould stress curve analyzes, the filling pressure line of force is gentle in its stress curve shape chamber rises, to walk to expect brisk, forging process is reasonable, and unnecessary material is assembled to tap hole.
Adopting after mould of the present utility model, its advantage is: on the blank of the utility model between upper die and lower die, be provided with the accommodation space of accommodating material unnecessary in blank cold closed-die forging process, can make the unnecessary material of cold forging realize shunting, on the one hand, guarantee the pressure stability in shape chamber in cold forging, improve dimensional accuracy, extend the service life of mould, on the other hand, reduce the consume of material, also omit the magnetic core and the plate face that after cold closed-die forging, need blank simultaneously and carried out mach operation, greatly improve production efficiency, there is very high economic benefit.
Although described by reference to the accompanying drawings embodiment of the present utility model; but the patent owner can make various distortion or modification within the scope of the appended claims; as long as be no more than the described protection domain of claim of the present utility model, all should be within protection domain of the present utility model.
Claims (3)
1. the forging mesopore cold forging die of a T iron, comprise the patrix (1) that is provided with upper cavity and the counterdie (4) that is provided with lower mode cavity, upper cavity briquetting (2) is installed in the upper cavity of described patrix (1), lower mode cavity briquetting (5) is installed in the lower mode cavity of described counterdie (4), it is characterized in that: in described lower mode cavity briquetting (5), be also provided with thimble moving up and down (7), between described upper cavity briquetting (2) and lower mode cavity briquetting (5), be provided with blank (8), described blank (8) is provided with accommodation space, this accommodation space is for accommodating unnecessary material at patrix (1) with respect to the cold closed-die forging process of counterdie (4) motion, described accommodation space is the tap hole (6) of being located at the end of blank (8), the top of described thimble (7) is also provided with the jacking block corresponding with the tap hole (6) of described blank (8) end.
2. the forging mesopore cold forging die of T iron according to claim 1, it is characterized in that: the first drive unit that drives this patrix (1) to move up and down is also installed on described patrix (1), on described counterdie (4), is also provided with the second drive unit that drives described thimble (7) to move up and down.
3. the forging mesopore cold forging die of T iron according to claim 2, is characterized in that: the cross sectional shape of described tap hole (6) is for circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727283.0U CN203610587U (en) | 2013-11-18 | 2013-11-18 | T-iron middle-hole cold-forging mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727283.0U CN203610587U (en) | 2013-11-18 | 2013-11-18 | T-iron middle-hole cold-forging mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610587U true CN203610587U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727283.0U Expired - Fee Related CN203610587U (en) | 2013-11-18 | 2013-11-18 | T-iron middle-hole cold-forging mould |
Country Status (1)
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| CN (1) | CN203610587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611868A (en) * | 2013-11-18 | 2014-03-05 | 梧州恒声电子科技有限公司 | Cold forging die for forging center holes of T iron |
-
2013
- 2013-11-18 CN CN201320727283.0U patent/CN203610587U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611868A (en) * | 2013-11-18 | 2014-03-05 | 梧州恒声电子科技有限公司 | Cold forging die for forging center holes of T iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |