CN106141175A - The porous, shaped mould of powder metallurgy Bar material blank product one mould - Google Patents
The porous, shaped mould of powder metallurgy Bar material blank product one mould Download PDFInfo
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- CN106141175A CN106141175A CN201510173667.6A CN201510173667A CN106141175A CN 106141175 A CN106141175 A CN 106141175A CN 201510173667 A CN201510173667 A CN 201510173667A CN 106141175 A CN106141175 A CN 106141175A
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- punch
- mould
- upper punch
- bar material
- porous
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Abstract
The present invention provides a kind of porous, shaped mould of powder metallurgy Bar material blank product one mould, including former, upper punch, undershoot and base；Former is made up of die cavity and steel bushing, die cavity and steel bushing interference fit；Upper punch and undershoot use combination Split type structure, and former is arranged between upper punch and undershoot；Base couples with undershoot fastening.Upper punch is made up of upper punch, upper press cover and top base；Undershoot is made up of low punch, lower cover and bottom base.Upper punch and low punch are interchangeable.Present invention achieves on large press once Bidirectional pressure and make many Bar material blank products, improve production efficiency.The blank product intensity of compacting is high, and even density, dimensional uniformity is good.The present invention is simple to operate, reliable, is suitable for the large-scale production of powder metallurgy Bar material blank product.
Description
Technical field
The present invention relates to the mould of a kind of powder metallurgy product, specifically powder metallurgy Bar material blank product
The one porous, shaped mould of mould.
Background technology
At present, when producing powder metallurgy product, for the Bar material blank more than 8:1 for the draw ratio, typically adopt
With extruded (compound pressurizes under creeping state, is molded by extrusion nozzle).Draw ratio is less than
The Bar material blank of 8:1, extruding and compression molding are all being used, but are being found by production practices, extruded
Product to be realized by operations such as " suppress cylindrical polishing and cut off tack ", and operation is various, and
Input and output rate and production efficiency are low, and powder scrap loss is big, flow of powder is uneven, causes product office
Portion's compactness difference, extrusion speed is low, non-cutting time length, mould loss big, cost is high and every length dimension
Poor with diameter dimension uniformity.And use compression molding mode to suppress bar and (compound is contained in steel pressure
Being pressurizeed powder by stamping in mould, after release, pressed compact extrudes in former), compressing product, office
Portion's even density, intensity is good, and every product length size and diameter dimension mutual deviation are little, and die life is long.
But compression molding die is mould one pore structure (i.e. to be gone up low punch and uses the single overall knot of solder alloy or all steel
Structure), a pressing process between upper and lower punching and former completes, and is pushed out one by undershoot from cavity space
Product, compacting efficiency is low.
Owing to being limited by 15T and 20T DORST press die frame size, for draw ratio more than 8:1's
Bar product, it is impossible to realize the normal compacting of product.Draw ratio to be realized on 200T DORST large press
The normal compacting of the bar product more than 8:1, needs the support of a set of porous mold, but the mould of a mould porous
Tool is still blank at Powder Metallurgy Industry so far.
Content of the invention
It is an object of the invention to: provide a kind of simple to operate, reliable, be suitable for Bar material blank product big
The porous, shaped mould of powder metallurgy Bar material blank product one mould of large-scale production.
To achieve these goals, the present invention is by the following technical solutions:
The porous, shaped mould of powder metallurgy Bar material blank product one mould, including former, upper punch, undershoot and base；
Former is made up of die cavity and steel bushing, die cavity and steel bushing interference fit；Upper punch and undershoot use combination Split type structure；
Upper punch is made up of upper punch, upper press cover and top base；Undershoot is made up of low punch, lower cover and bottom base；
The end face of upper press cover and lower cover has heavy stand hole, and there are rectangular through hole, the bottom side of having groove in middle part；Upper punch and
Low punch is respectively by rectangular through hole and upper press cover and lower cover matched in clearance；The upper end of upper punch and low punch
Lower end be connected with top base and bottom base respectively；Former is arranged between upper punch and undershoot；The lower end of upper punch
It is arranged in the die cavity of former with the upper end of low punch；Undershoot couples with base fastening.
The present invention provides a kind of mould porous mold being capable of two-way compacting.Use upper press cover, lower cover
With more than one piece upper punch and low punch, couple with screw fastening, be fixed on its pedestal connecting accordingly and base,
It is then fitted to each connecting portion of 200T DORST press, carry out the compacting of Bar material blank product.Upper punch and
Low punch uses combination Split type structure.Former is arranged between upper punch and undershoot, is fixed on by press connector
In the middle part of press.Undershoot is fixed by tommyhead bolt with press lower shoe.Upper punch and press upper plate pass through T-shaped
Bolt is fixed.Owing to mould is a mould porous, after a pressing process terminates, by low punch from former mould
Chamber is pushed out more than one piece product, effectively raises production efficiency.
Further improve and be: the steel bushing of described former and the value of interference fit of die cavity are 0.24～0.28.?
In this value of interference fit, steel bushing is more preferable with coordinating of die cavity.
Further improve and be: bottom described upper punch, have groove.Owing to upper punch terminates in pressing process
After, cavity space to be exited, for ensureing sliding surface and the top base contact plane perpendicularity of upper punch, upper
Ram bottom processes a groove, in order to avoid contact surface is excessive, affect perpendicularity, makes the upper punch cannot be for the second time
Compacting action enters cavity space smoothly.
Further improve and be: step is arranged at the bottom of described upper punch and low punch；Upper press cover and lower cover
There is step；Upper punch bottom stage is higher than upper press cover step 0.05～0.1；Low punch bottom stage is less than down
Gland step 0.10～0.15.Owing to, in pressing process, upper punch is not allow for rocking, therefore it is required that on
Drift and upper press cover, four upper punching (2) bottom stage h4 should be higher than that at upper press cover (3) h step 0.05～
0.1 (see accompanying drawing the 4th, 5)；After assembling with upper press cover (3), then
Further improve and be: described upper punch and low punch difference at least 4, every height mutual deviation
± 0.01, inverted draw cut height is controlled ± 0.02 by linear cutter.The one mould porous mold of the present invention, choosing
Taking mould four hole, so upper punch and low punch have 4 respectively, the height of every should be contour, and mutual deviation should be
In above-mentioned control range.
Further improve and be: described upper punch is contour with low punch, and can exchange.Due to drift
Sliding surface need to use coordinate mill processing with the cavity space section of cooperation, if drift non-interchangeability, then drift shaping
As long as region has a drift fracture or pressure to lack, whole drift is scrapped, and mould exorbitant expenditure, due to upper punch
Head and low punch can exchange, and not only maintenance is changed rapidly, and reduces cost of manufacture.
Further improve and be: at least 4, the heavy stand hole of described upper press cover and lower cover end face, middle part
Rectangular through hole at least 4.Owing to upper punch and low punch have 4, upper punch and low punch are to lead to respectively
Cross rectangular through hole and upper press cover and lower cover matched in clearance, so the heavy stand hole of upper press cover and lower cover end face,
The rectangular through hole in middle part has 4.Upper punch and low punch are to use square hole with upper press cover and lower cover matched in clearance
Positioning, limits upper punch and low punch at X to the free degree with Y-direction, by upper press cover and lower cover control
The compacting center of gravity of drift and low punch.
Further improve and be: bottom described upper punch, have step, upper punch bottom stage with upper press cover
Higher than upper press cover step 0.05～0.1；Upper punch and the upper press cover rectangular through hole section of cooperation tolerance be 0～
+ 0.02, upper punch is 0.01～0.03 with the fit clearance of the rectangular through hole of upper press cover.Due in pressing process,
Upper punch is not allow for rocking, therefore it is required that upper punch controls with fit tolerance and the fit clearance of upper press cover
In above-mentioned scope.
Further improve and be: bottom described low punch, have step with lower cover；Low punch bottom stage
Less than lower cover step 0.10～0.15.Low punch and the section of the cooperation tolerance of the rectangular through hole of lower cover be 0～
+ 0.02, low punch is 0.08～0.1 with the fit clearance of the rectangular through hole of lower cover.It in pressing process, is
Ensure die-filling reliability, low punch can be allowed to have a little loosening, therefore it is required that low punch and lower cover
Fit tolerance and fit clearance control within the above range.
Further improve and be: there is through hole at end face and the middle part of described base.End face through hole is used for connecting undershoot
Head and press, middle through-hole is for reducing base weight.
Further improve and be: described upper punch and low punch are in the non-forming region chamfering 1.5 of cavity space
×45°.For ensureing the security of operation, non-forming region needs chamfering 1.5 × 45 °.
Further improve and be: described upper punch and low punch are anti-R mistake at the forming area of cavity space
Cross.The i.e. shaping inverted draw cut at upper punch and low punch uses anti-R transition, during to ensure compacting upper punch with under
The press strengthi of drift, it is to avoid in pressing process, the phenomenon of crackle and layering occurs in product.
Effect of the invention is that: solve the Bar material blank more than 8:1 for the draw ratio at extruded aspect
Defect, it is achieved that once success Bidirectional pressure makes many Bar material blank products on 200T large press, improves
Production efficiency.The compound of the different trade mark can be used, suppress that intensity is high, size mutual deviation is little, more than grinding
The Bar material blank product that amount is controlled well, improves the durability of product, the uniformity of product size and compactness
Good, decrease finished product grinding rate.Owing to upper punch is interchangeable with low punch, reduce cost of manufacture, and make
Maintenance is changed rapider.The present invention is simple to operate, reliable, is suitable for powder metallurgy Bar material blank product
Large-scale production.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the former schematic diagram of the present invention.
Fig. 3 is the structural representation of upper punch of the present invention.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the structural representation of upper press cover of the present invention.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the structural representation of base of the present invention.
Fig. 8 is the top view of Fig. 7.
In figure: the 1st, former；2nd, upper punch；3rd, upper press cover；4th, top base；5th, low punch；6th, under
Gland；7th, bottom base；8th, through hole；9th, base；10th, die cavity；11st, steel bushing；
Detailed description of the invention
Below, in conjunction with accompanying drawing, the invention will be further described:
The mould of the present invention is as a example by mould four hole in the present embodiment.
The profiled part of the present invention uses Split assembled structure, by the rectangular through hole of upper and lower gland as dress
Join positioning hole, coupled by hexagon socket cap head screw fastening with pedestal, be combined into upper and lower punching, according to powder
The metallurgical compacting in end mechanism, it is achieved bidirectional pressed moulding.
As shown in Fig. 1～Fig. 8, the present invention includes former the 1st, upper punch, undershoot and base 9.
Former 1 is made up of die cavity 10 and steel bushing 11, steel bushing 11 and die cavity 10 interference fit, interference fit
Amount is 0.24～0.28.Because former 1 is overweight, for ease of operation, process screw thread hole for hoist at its end face, be
Loss of weight, the processing in its bottom surface is free tool bore.
Upper punch and undershoot use combination Split type structure: upper punch is made up of upper punch the 2nd, upper press cover 3 and top base 4；
Undershoot is made up of low punch the 5th, lower cover 6 and bottom base 7.Upper punch 2 and low punch 5 are compressing
Critical piece, has 4 respectively, and every height mutual deviation ± 0.01, inverted draw cut height is controlled by linear cutter
± 0.02.The upper end of the lower end of upper punch 2 and low punch 5 is arranged in the die cavity 10 of former 1, upper punch
The upper end of 2 and the lower end of low punch 5 are connected with top base 4 and bottom base 7 respectively.Upper press cover 3 and under
The end face of gland 6 has 4 heavy stand holes, and there are 4 rectangular through holes, the bottom side of having groove in middle part.Upper punch 2
Use square hole positioning matched in clearance with low punch 5 by rectangular through hole and upper press cover 3 and lower cover 6 respectively,
To limit upper punch 2 and low punch 5 at X to the free degree with Y-direction, controlled by upper press cover 3 and lower cover 6
Upper punch 2 processed and the compacting center of gravity of low punch 5.Upper press cover 3 acts primarily as with top base 4 and is connected upper punch 2
Effect；Lower cover 6 acts primarily as the effect being connected low punch 5 with bottom base 7.For reducing upper punch and undershoot
Weight, top base 4 and bottom base 7 are in the case of proof strength, and bottom is machined with blind hole.Upper punch 2
The section of the cooperation tolerance of through hole rectangular with lower cover 6 with upper press cover 3 and low punch 5 is 0～+0.02, upper punch
2 is 0.01～0.03 with the fit clearance of the rectangular through hole of upper press cover 3, and the bottom stage of upper punch 2 is higher than upper
Gland 3 step 0.05～0.1.Low punch 5 is 0.08～0.1 with the fit clearance of the rectangular through hole of lower cover 6,
Low punch 5 bottom stage is less than lower cover 6 step 0.10～0.15.Upper punch 2 assembles with upper press cover 3
Pass through hexagon socket cap head screw with top base 4 afterwards and nut-lock washer fastening couples.Low punch 5 and lower cover 6
Pass through hexagon socket cap head screw with bottom base 7 after assembling and nut-lock washer fastening couples.For ensureing operation
Security, the non-forming region of upper punch 2 and the die cavity 10 at former 1 for the low punch 5 need chamfering 1.5 ×
45°.The forming area of upper punch 2 and the die cavity 10 at former 1 for the low punch 5 is anti-R transition.I.e. upper
The shaping inverted draw cut of drift 2 and low punch 5 uses anti-R transition, upper punch 2 and low punch 5 during to ensure to suppress
Press strengthi, it is to avoid in pressing process, there is crackle and lamination in product.
Base 9 couples with undershoot fastening.The end face of base 9 has 4 through holes 8, by interior hexagonal cylindrical head spiral shell
Nail and nut-lock washer couple with low punch 5 fastening, and for reducing weight, the middle part of base 9 is machined with through hole.
The operation principle of the present invention: be connected the present invention with 200T large press, former 1 is returned to charging bit
Putting, die cavity 10 enters state of charge, and raw material is inserted die cavity 10, and upper punch 2 declines and enters die cavity 10
A small distance (without top pressure), upper punch 2 and former 1 synchronize decline and complete pressing stroke.Former 1 stops
Decline；If have top pressure, upper punch 2 is pressed a bit of under continuing, and completes top pressure stroke.If during without top pressure,
Upper punch 2 no longer declines.When without preload, former 1 is drop-down, and pressed compact starts while die cavity 10 is deviate from
Upper punch 2 is lifted off pressed compact；If have preload, former 1 is drop-down, and pressed compact is deviate from from die cavity 10, on
Drift is pressed on pressed compact until after completely out die cavity 10, upper punch 2 just leaves pressed compact, and former 1 resets.
In whole pressing process, low punch 5 maintains static.By the compacting action each other of each parts of mould,
Powder metallurgy compound is pressed into there is definite shape and size, the powder metallurgy rod of certain density and intensity
Material blank product.
The present invention solves the defect at extruded aspect for the Bar material blank more than 8:1 for the draw ratio, it is achieved that
Disposably suppress many bar products at large press, improve production efficiency.Compacting blank out is each
Position even density, the uniformity of product size and compactness are good, decrease finished product grinding rate.Semi-finished product grind
Cut surplus to be effectively controlled, improve cutting wear.Owing to upper punch is interchangeable with low punch, fall
Low cost of manufacture, and it is rapider to make maintenance change.It is many that the present invention can produce a mould porous sheet material, a mould
Hole tubing, a mould porous alloy button etc., also can be at 15T, 20T, 50T for the little product of some sizes
Deng the compacting carrying out a porous sintered product of mould on DORST press.The one mould multiple-hole die of the present invention is signed an undertaking
Structure is simple, reliable, low cost of manufacture.
The above only in order to explain the present invention, is not intended to limit the present invention.All spirit in the present invention and
Any modification, equivalent and the improvement etc. made within principle, should be included in protection scope of the present invention
Within.
Claims (11)
1. the porous, shaped mould of powder metallurgy Bar material blank product one mould, it is characterised in that: described mould includes
Former, upper punch, undershoot and base；Former is made up of die cavity and steel bushing, die cavity and steel bushing interference fit；Upper punch
Use combination Split type structure with undershoot；Upper punch is made up of upper punch, upper press cover and top base；Undershoot by low punch,
Lower cover and bottom base composition；The end face of upper press cover and lower cover has heavy stand hole, and there are rectangular through hole, bottom in middle part
The side's of having groove；Upper punch and low punch are respectively by rectangular through hole and upper press cover and lower cover matched in clearance；Former
Arrange between upper punch and undershoot；The upper end of the lower end of upper punch and low punch is arranged in the die cavity of former；Upper punch
The lower end of the upper end of head and low punch is connected with top base and bottom base respectively；Undershoot couples with base fastening.
2. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, its feature
It is: the steel bushing of described former and the value of interference fit of die cavity are 0.24～0.28.
3. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, its feature
It is: bottom described upper punch, have groove.
4. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, its feature
It is: described upper punch and low punch difference at least 4, every height mutual deviation ± 0.01, inverted draw cut height
Controlled ± 0.02 by linear cutter.
5. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1 or 4,
It is characterized in that: described upper punch is contour with low punch, and can exchange.
6. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, its feature
It is: at least 4, the heavy stand hole of described upper press cover end face, the rectangular through hole in middle part at least 4.
7. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 6, its feature
Being: have step with upper press cover bottom described upper punch, upper punch bottom stage is higher than upper press cover step
0.05～0.1；Upper punch is 0～+0.02 with the upper press cover rectangular through hole section of cooperation tolerance, upper punch and upper pressure
The fit clearance covering rectangular through hole is 0.01～0.03.
8. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 6, its feature
It is: bottom described low punch, have step with lower cover；Low punch bottom stage is less than lower cover step
0.10～0.15.Low punch is 0～+0.02 with the section of the cooperation tolerance of the rectangular through hole of lower cover, low punch with
The fit clearance of the rectangular through hole of lower cover is 0.08～0.1.
9. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, its feature
It is: there is through hole at end face and the middle part of described base.
10. the porous, shaped mould of powder metallurgy Bar material blank product one mould according to claim 1, it is special
Levy and be: described upper punch and low punch are in the non-forming region chamfering 1.5 × 45 ° of cavity space.
The 11. porous, shaped moulds of powder metallurgy Bar material blank product one mould according to claim 1, it is special
Levy and be: described upper punch and low punch are anti-R transition at the forming area of cavity space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173667.6A CN106141175A (en) | 2015-04-13 | 2015-04-13 | The porous, shaped mould of powder metallurgy Bar material blank product one mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173667.6A CN106141175A (en) | 2015-04-13 | 2015-04-13 | The porous, shaped mould of powder metallurgy Bar material blank product one mould |
Publications (1)
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| CN106141175A true CN106141175A (en) | 2016-11-23 |
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ID=57336995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510173667.6A Pending CN106141175A (en) | 2015-04-13 | 2015-04-13 | The porous, shaped mould of powder metallurgy Bar material blank product one mould |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326295A (en) * | 2018-01-29 | 2018-07-27 | 苏州莱特复合材料有限公司 | It is rushed on a kind of powder metallurgy Split type shaping |
| CN109604590A (en) * | 2019-01-28 | 2019-04-12 | 成都图南电子有限公司 | It is a kind of for bonding the single mode multi-cavity molding die of ferro-aluminum boron |
| CN111072266A (en) * | 2019-12-31 | 2020-04-28 | 西安赛尔电子材料科技有限公司 | Glass powder forming die for full-automatic powder forming press |
| CN112846177A (en) * | 2020-12-31 | 2021-05-28 | 中核北方核燃料元件有限公司 | Porous core blank forming method |
| CN114082947A (en) * | 2021-10-27 | 2022-02-25 | 株洲钻石切削刀具股份有限公司 | Powder molding apparatus and powder molding method |
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| CN203843166U (en) * | 2014-05-29 | 2014-09-24 | 昆山玛冀电子有限公司 | Cold pressing die for manufacturing inductor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326295A (en) * | 2018-01-29 | 2018-07-27 | 苏州莱特复合材料有限公司 | It is rushed on a kind of powder metallurgy Split type shaping |
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| CN109604590A (en) * | 2019-01-28 | 2019-04-12 | 成都图南电子有限公司 | It is a kind of for bonding the single mode multi-cavity molding die of ferro-aluminum boron |
| CN111072266A (en) * | 2019-12-31 | 2020-04-28 | 西安赛尔电子材料科技有限公司 | Glass powder forming die for full-automatic powder forming press |
| CN112846177A (en) * | 2020-12-31 | 2021-05-28 | 中核北方核燃料元件有限公司 | Porous core blank forming method |
| CN114082947A (en) * | 2021-10-27 | 2022-02-25 | 株洲钻石切削刀具股份有限公司 | Powder molding apparatus and powder molding method |
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Application publication date: 20161123 |