CN109277565A - A kind of powder forming unit and forming method - Google Patents
A kind of powder forming unit and forming method Download PDFInfo
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- CN109277565A CN109277565A CN201811383589.2A CN201811383589A CN109277565A CN 109277565 A CN109277565 A CN 109277565A CN 201811383589 A CN201811383589 A CN 201811383589A CN 109277565 A CN109277565 A CN 109277565A
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- punch
- side plate
- catenating slider
- side pressure
- die body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/007—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a plurality of pressing members working in different directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
- B22F2003/031—Press-moulding apparatus therefor with punches moving in different directions in different planes
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- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of powder forming unit and forming methods, device includes die body, upper punch and low punch, die body is equipped with type chamber, die body upper surface is equipped at least two guide grooves, and guide groove is connected to type chamber, low punch is equipped with mandrel and mandrel can run through type chamber, a side pressure punch-head assembly is inserted in each guide groove, side pressure punch-head assembly includes upper catenating slider, lower catenating slider and side pressure formed punch, on, lower catenating slider is fixed into an entirety, first side plate is located at outside guide groove, side pressure formed punch is movably inserted in, in gap between lower catenating slider, side pressure formed punch is set there are two the second side plate, and second side plate be located at the outside of the first side plate, a connecting rod is fixed on first side plate, connecting rod runs through the second side plate, it is arranged an elastic component thereon, catenating slider in each group, side pressure formed punch and lower catenating slider are directed toward The side type face of type chamber and the top surface of low punch form powder filled cavity.Method includes filler, compacting and demoulding.
Description
Technical field
The present invention relates to powder metallurgical technology more particularly to a kind of powder forming units and forming method.
Background technique
In PM technique, powder technology is a most important process in digital cuttings production.Ordinary circumstance
Lower powder compacting is used to be carried out by die body, upper low punch and core bar component devices.This device is applied to by upper low punch
Power on powder makes powder densification, becomes the effigurate green compact of tool, but is caused due to product structure after molding
Each region powder density of green compact has differences, and causes green compact sintering warpage, and Product Precision is not high and influences the service performance of product
Or product is unqualified；Currently, the moulding process generallyd use can only be directed on product stripping direction with trench structure
Product, and cannot achieve development and powder with PM technique perpendicular to the product structure on stripping direction with groove profile
The development of last molding equipment technology, the powder forming unit with side pressure function also occur in succession, multiple preferably to solve structure
Miscellaneous product used powder technology and the various problems of bring in the past.
If patent document CN103732386A discloses a kind of green compact manufacture complexes with side pressure function, there is edge
The upper punch and lower punch of axial movement, and the side formed punch moved radially, side formed punch on tringle slidably
Movement, side formed punch and tringle move in the channel in base body, and cover board is mounted on base body.This device energy
It forms the green compact of complicated side structure and green density is uniform, but mostly structure is complicated for this molding machine component, in powder
Filling and green compact demoulding when need to remove cover board, upper punch, lower punch, side formed punch and tringle structure is complicated cooperation essence
Degree requires high, the individual power source of all parts needs during powder compacting, forming step complexity.
If patent document JP107149A discloses a kind of powder forming unit with side pressure function, die body is divided into one
A master slider and two driven sliding blocks, by the radial motion powder filler or abjection green compact of three sliding blocks, powder compacting
Pressure mostlys come from low punch, and three sliding blocks passively exert pressure to powder, and this device, which can produce side, to be had
The green compact of groove profile but and have certain effect to the improvement of the density of green compact, but there are the green compact of Complex Groove for side
Molding and density improvement are unobvious.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and it is equal to provide a kind of structure simple powder compacting
Powder forming unit and forming method even, shaping efficiency is high.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of powder forming unit, including die body, upper punch and low punch, the die body middle part are equipped with the type chamber of perforation,
The upper punch and low punch can be moved up and down type is intracavitary respectively, and the die body upper surface is equipped at least two guide grooves, institute
It states guide groove to be arranged circumferentially along die body, and guide groove is connected to type chamber, the low punch is equipped with mandrel and mandrel can pass through
Type chamber is worn, a side pressure punch-head assembly is inserted in each guide groove, the side pressure punch-head assembly includes upper catenating slider, the second line of a couplet
Movable slider and side pressure formed punch, the upper catenating slider and lower catenating slider are fixed into an entirety, institute by two the first side plates
It states the first side plate to be located at outside guide groove, the side pressure formed punch is movably inserted between catenating slider and lower catenating slider
In gap, the side pressure formed punch is set there are two the second side plate, and the second side plate is located at the outside of the first side plate, first side plate
It corresponding and is parallel to each other with the second side plate, a connecting rod is fixed on first side plate, the connecting rod runs through the second side plate,
An elastic component is arranged on the connecting rod, the elastic component is set between the first side plate and the second side plate, catenating slider, side in each group
Press formed punch and the side channel profile of lower catenating slider directing chamber and the top surface of low punch in the intracavitary formation powder filled cavity of type.
As a further improvement of the above technical scheme, it is preferred that the upper catenating slider, lower catenating slider and side pressure punching
Head three is of same size in guide groove, and the sum of thickness of three is identical as the depth of guide groove.
As a further improvement of the above technical scheme, it is preferred that the side pressure punch-head assembly and guide groove clearance fit,
Gap is W, is met: 0.005mm≤W≤0.01mm.
As a further improvement of the above technical scheme, it is preferred that the guide groove two sides are equipped with groove, the side pressure
Formed punch two sides are equipped with the convex block that can cooperate with the groove.
As a further improvement of the above technical scheme, it is preferred that the die body outer surface be equipped with the first side plate against
Stop surfaces.
As a further improvement of the above technical scheme, it is preferred that the upper catenating slider with a thickness of H1, meet:
1.5mm≤H1≤2.5mm。
A kind of forming method of such as above-mentioned powder forming unit, comprising the following steps:
S1, filler: upper punch is moved to above type chamber, and side pressure punch-head assembly is moved to along guide groove by plesiotype chamber, until
First side plate offsets with die body, and it is intracavitary and close to lower catenating slider that low punch protrudes into type, at this point, catenating slider, side pressure in each group
The top surface of the side channel profile and low punch of formed punch and lower catenating slider directing chamber is carried out in the intracavitary formation powder filled cavity of type
Powder filling；
S2, compacting: upper punch and low punch move toward one another the setting position for reaching compacting, and each side pressure formed punch is to type chamber center
The setting position of compacting is moved to, common compaction of powders makes powder compacting, and forms green compact；
S3, demoulding: each side pressure formed punch is exited to the direction of remote release chamber, later, upper punch, green compact and low punch together on
It rises to and leaves type chamber, upper punch continues to rise and leave green compact, takes out green compact, and later, upper punch and low punch respectively return to just
Beginning position.
As a further improvement of the above technical scheme:
In step sl, the initial position of the low punch is the lower section that low punch is moved to lower catenating slider upper surface,
The difference in height of the two in vertical direction is H2, is met: 1.5mm≤H2≤2.5mm；
In order to solve the above technical problems, the present invention uses following another technical solution:
A kind of powder forming unit, including die body, upper punch and low punch, the upper punch and low punch can be respectively along moulds
Body axis moves up and down, and the die body upper surface is equipped at least three guide grooves, and the guide groove is arranged circumferentially along die body,
The low punch is equipped with mandrel and mandrel can run through die body, is inserted with a side pressure punch-head assembly in each guide groove, described
Side pressure punch-head assembly includes upper catenating slider, lower catenating slider and side pressure formed punch, and the upper catenating slider and lower catenating slider are logical
It crosses two the first side plates and is fixed into an entirety, first side plate is located at outside guide groove, and the side pressure formed punch is movably inserted
In gap between upper catenating slider and lower catenating slider, the side pressure formed punch is set there are two the second side plate, and second side
Plate is located at the outside of the first side plate, and first side plate and the second side plate are corresponded and be parallel to each other, on first side plate
A connecting rod is fixed, the connecting rod runs through the second side plate, and an elastic component is arranged on the connecting rod, and the elastic component is set to the first side
Between plate and the second side plate, catenating slider in each group, side pressure formed punch and lower catenating slider be directed toward the side channel profile of die body axial direction with
And powder filled cavity is formed between the top surface of low punch.
Compared with the prior art, the advantages of the present invention are as follows:
Powder forming unit of the invention may be implemented to substantially improve green compact to above and below product and surrounding while suppressing
Each region compact density, ensure that the dimensional accuracy of product；The side pressure punch-head assembly only needs a power source can be realized
Athletic performance needed for linkage from top to bottom sliding block and side pressure formed punch, to realize that active pressure and the driving linkage of side blow head of side blow head are slided
Block retracts enough spaces, allows the smooth ejection device of green compact, improves compacting efficiency and product quality greatly, only has upper
Formed punch, low punch, side pressure punch-head assembly and the several components of die body, structure is simple, and forming method is easily operated.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of die body in the embodiment of the present invention 1.
Fig. 3 is the structural schematic diagram of side pressure punch-head assembly in the embodiment of the present invention 1.
Fig. 4 is the structural schematic diagram of linkage from top to bottom sliding block in the embodiment of the present invention 1.
Fig. 5 is the structural schematic diagram of side pressure formed punch in the embodiment of the present invention 1.
Fig. 6 is that preceding each component is molded in the embodiment of the present invention 1 with regard to bitmap.
Fig. 7 is molding compacting result schematic diagram in the embodiment of the present invention 1.
Fig. 8 is knockout course schematic diagram in the embodiment of the present invention 1.
Fig. 9 is the arrangement schematic diagram in the embodiment of the present invention 2 between side pressure punch-head assembly and die body.
Each label indicates in figure:
100, die body；101, stop surfaces；110, type chamber；120, guide groove；121, groove；200, upper punch；300, under
Formed punch；400, mandrel；500, side pressure punch-head assembly；501, the first side plate；502, the second side plate；503, connecting rod；504, elastic component；
505, threaded hole；506, through-hole；510, upper catenating slider；520, side pressure formed punch；521, convex block；530, lower catenating slider；600,
Powder filled cavity；700, green compact.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, invention is further described in detail.
Embodiment 1
As shown in Figures 1 to 5, the powder forming unit of the present embodiment, including die body 100, upper punch 200 and low punch
300, be equipped with the type chamber 110 of perforation in the middle part of die body 100, upper punch 200 and low punch 300 can respectively in type chamber 110 on move down
Dynamic, 100 upper surface of die body is set there are two guide groove 120, and two guide grooves 120 are in 180 ° along die body 100 and arrange, and guide groove
120 are connected to type chamber 110, and low punch 300 is equipped with mandrel 400 and mandrel 400 can be in type chamber 110, each guide groove 120
It is inserted with a side pressure punch-head assembly 500, side pressure punch-head assembly 500 includes upper catenating slider 510, lower catenating slider 530 and side
Press formed punch 520, upper catenating slider 510 and lower catenating slider 530 are fixed into an entirety by two the first side plates 501, and first
Side plate 501 is located at outside guide groove 120, and side pressure formed punch 520 is movably inserted in catenating slider 510 and lower catenating slider 530
Between gap in, side pressure formed punch 520 is set there are two the second side plate 502, and the second side plate 502 be located at the first side plate 501 outside
Side, the first side plate 501 and the second side plate 502 are corresponded and are parallel to each other, and a connecting rod 503 is fixed on the first side plate 501, even
Bar 503 runs through the second side plate 502, and an elastic component 504 is arranged on connecting rod 503, and elastic component 504 is set to the first side plate 501 and second
Between side plate 502, the side channel profile of 530 directing chamber 110 of catenating slider 510, side pressure formed punch 520 and lower catenating slider in each group
And the top surface of low punch 300 forms powder filled cavity 600 in type chamber 110.
As shown in fig. 6, this figure shows the schematic diagram in place of the molding machine before compacting, when being suppressed, upper undershoot
Head moves toward one another, and side pressure formed punch inwardly moves, and compacting result is as shown in Figure 7.It is demoulded after compacting, as shown in figure 8, side
Pressure formed punch 520 exits outward, and upper catenating slider 510 and lower catenating slider 520 is driven to exit together, leaves green compact 700, up and down
Formed punch and green compact rise together, take out the last upper low punch of green compact 700 respectively return.Emphasis of the invention is side pressure punch-head assembly
500 structure, upper catenating slider 510 and lower catenating slider 520 are to be fixed together, and can advance or retract simultaneously, side pressure punching
First 520 relatively upper catenating sliders 510 and lower catenating slider 530 be it is movable, further through elastic component 504 by side pressure formed punch 520 with
Each catenating slider is connected, and in side pressure 520 pressed powder of formed punch, is not influenced by each catenating slider, while elastic component 504
So that the first side plate 501 is pressed on die body 100, ensure that catenating slider 510 and 200 side wall of upper punch gap and under
The gap of catenating slider 530 and 300 side wall of low punch, to prevent the material spray when material leakage and compression moulding when filler.It is demoulding
When, side pressure formed punch 520 can drive linkage from top to bottom sliding block to leave green compact 700 again, and such structure design ensure that side pressure formed punch
It drives linkage from top to bottom sliding block mobile, reduces power source, reduce costs, ensure that the stability of movement, in addition, linkage from top to bottom is sliding
Block plays the role of a cover board, in pressed powder, can prevent powder from overflowing powder filled cavity 600.The molding machine can
It is suppressed simultaneously with surrounding with realizing above and below product, substantially improves the compact density in each region of green compact, ensure that product
Dimensional accuracy；The side pressure punch-head assembly only needs a power source to can be realized needed for linkage from top to bottom sliding block and side pressure formed punch 520
Athletic performance, to realize active pressure and the enough spaces of side pressure formed punch driving catenating slider rollback of side pressure formed punch 520, so that
Green compact can smooth ejection device, improve compacting efficiency and product quality greatly, only there is upper punch, low punch, side pressure formed punch
Component and the several components of die body, structure is simple, easily operated.
In the present embodiment, the setting of mandrel 400 is to guarantee the molding of the centre bore of green compact 700.Elastic component 504 is specially bullet
Spring.Wherein, upper punch 200, low punch 300 and side pressure formed punch 520 are respectively provided with individually driving power (not shown).
In the present embodiment, upper catenating slider 510, lower catenating slider 530 and 520 three of side pressure formed punch are in guide groove 120
It is of same size, and the sum of thickness of three is identical as the depth of guide groove 120.In molding, upper catenating slider 510, the second line of a couplet
The side channel profile of 520 three of movable slider 530 and side pressure formed punch is mutually linked, so that the green compact 700 suppressed has continuous light
Sliding surface.
In the present embodiment, side pressure punch-head assembly 500 and 120 clearance fit of guide groove, gap W, W be 0.005mm~
Any value (contain two endpoint values) in 0.01mm, in the present embodiment, W value 0.005mm is to reduce powder inflow to the greatest extent
Upper catenating slider 510 avoids the generation of card mold phenomenon, while being conducive to side pressure punch-head assembly 500 with the gap of guide groove 120
It is easily mobile.
In the present embodiment, upper catenating slider 510 and lower catenating slider 520 can connect into one by two the first side plates 501
Body, the first side plate 501 are equipped with threaded hole 505, and the second side plate 502 is equipped with through-hole 506, and connecting rod 503 is a bolt, bolt
Across through-hole 506 and with threaded hole 505, spring pocket on bolt, socket part there is no screw thread, in order to the second side plate
502 move on bolt, and such structure design guarantees that upper catenating slider 510 and upper catenating slider 520 can move simultaneously, with
The stability of movement is provided.In addition to the present embodiment, it is also possible to catenating slider 510, lower catenating slider 520, the first side plate 501
It is integrally formed structures between three.
In the present embodiment, 120 two sides of guide groove are equipped with groove 121, and 520 two sides of side pressure formed punch are equipped with can be with groove 121
The convex block 521 of cooperation, with prevent side pressure formed punch 520 compacting when stress and upwarp, guarantee green compact 700 burr width.Two
Groove 121 is located at the two sides of type chamber 110, and the radical length of groove 121 is no more than the center of type chamber 110 to 100 circumference of die body
Distance guarantees groove 121 not through type chamber 110, so that type chamber 100 has the compressive plane of enough compacting green compacts 700.
In the present embodiment, 100 outer surface of die body be equipped with the first side plate 501 against stop surfaces 101, link in guarantee
Position precision when sliding block 510 and lower catenating slider 530 mold prevents from colliding and mold damage with upper low punch.
In the present embodiment, upper catenating slider 510 is any value in 1.5mm~2.5mm with a thickness of H1, H1
(containing two endpoint values).In this way, on the one hand guarantee the intensity of its structure, on the other hand, the cause of powder slowly when due to compacting
Close be applied to side pressure formed punch 520 radially on power can be increasing, its stress is excessive in order to prevent and opposite direction is transported
It is dynamic, minimize the time of contact of powder Yu upper catenating slider 510, that is to say, that under the premise of proof strength, thickness is as far as possible
It does small.
The forming method of molding machine of the invention, comprising the following steps:
S1, filler: upper punch 200 is moved to 110 top of type chamber, and side pressure punch-head assembly 500 is moved to along guide groove 120 and leans on
Plesiotype chamber 110, until the first side plate 501 offsets with die body 100, low punch 300 is protruded into type chamber 110 and close to lower catenating slider
530, at this point, in each group 530 directing chamber 110 of catenating slider 510, side pressure formed punch 520 and lower catenating slider side channel profile with
And the top surface of low punch 300 forms powder filled cavity 600 in type chamber 110, carries out powder filling；
S2, compacting: upper punch 200 and low punch 300 move toward one another the setting position for reaching compacting, each side pressure formed punch 520
The setting position of compacting is reached to 110 center movement of type chamber, common compaction of powders makes powder compacting, and forms green compact 700；
S3, demoulding: each side pressure formed punch 520 is exited to the direction of remote release chamber 110, later, upper punch 200,700 and of green compact
Low punch 300 rises to together leaves type chamber 110, and upper punch 200 continues to rise and leave green compact 700, takes out green compact 700, it
Afterwards, upper punch 200 and low punch 300 respectively return to initial position.
It repeats the above steps, carries out compression moulding next time.
In the present embodiment, in step sl, the initial position of low punch 300 is that low punch 300 is moved to lower catenating slider
The lower section of 530 upper surfaces, the difference in height of the two in vertical direction are H2, and H2 is that any value in 1.5mm~2.5mm is
Can, the present embodiment value 1.5mm.The initial position of low punch 300 is filler position, in mold design, is produced by calculating
The total height of filler can be roughly calculated in the substance of product, and low punch 300 is moved near lower 530 upper surface of catenating slider, height
Difference is the setting of H2, is that stress and its opposite direction move in pressing process in order to avoid lower catenating slider 530, minimizes powder
The last time of contact with lower catenating slider 530.
In the present embodiment, in step sl, the side channel profile of side pressure formed punch 520 is located at the side channel type of lower catenating slider 530
The inside in face, the two range difference in the horizontal direction are L, and L is an adjustable numerical value, can according to the structure of green compact 700 into
Row is adjusted, and is guaranteed identical with the compacting compression ratio on periphery up and down.In the present embodiment, when suppressing in place (shown in Fig. 6), power is driven
Certain power is applied with to side pressure formed punch 520, such elastic component 504 is compressed to a certain degree, and then 501 pre-pressing of the first side plate
On die body 100.
In the present embodiment, the upper punch 200, the movement speed of low punch 300 and side pressure formed punch 520 and action time can
With control, for the benefit of adjustment of 700 density uniformity of green compact, to guarantee the dimensional accuracy of product.
In addition to the present embodiment, side pressure punch-head assembly 500 also can be set three or three or more, generally when die body has type
When chamber 110, using two groups of side pressure punch-head assemblies 500.
Embodiment 2
As shown in figure 9, the powder forming unit of the present embodiment, difference from Example 1 are only that:
In the present embodiment, die body 100 is not provided with type chamber 110, and side pressure punch-head assembly 500 is arranged three groups, powder filled cavity 600
Directly it is made of the side channel profile of three groups of side pressure punch-head assemblies 500.
Remaining structure is substantially the same manner as Example 1, and forming method is also consistent with embodiment 1, and details are not described herein again.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (9)
1. a kind of powder forming unit, including die body (100), upper punch (200) and low punch (300), in the die body (100)
Portion is equipped with the type chamber (110) of perforation, and the upper punch (200) and low punch (300) can move down on type chamber (110) is interior respectively
Dynamic, die body (100) upper surface is equipped at least two guide grooves (120), and the guide groove (120) is circumferential along die body (100)
It is evenly arranged, and guide groove (120) is connected to type chamber (110), the low punch (300) is equipped with mandrel (400) and mandrel
(400) type chamber (110) can be run through, which is characterized in that it is inserted with a side pressure punch-head assembly (500) in each guide groove (120),
The side pressure punch-head assembly (500) includes upper catenating slider (510), lower catenating slider (530) and side pressure formed punch (520), described
Upper catenating slider (510) and lower catenating slider (530) are fixed into an entirety by two the first side plates (501), and described first
Side plate (501) is located at guide groove (120) outside, and the side pressure formed punch (520) is movably inserted in catenating slider (510) under
In gap between catenating slider (530), the side pressure formed punch (520) is set there are two the second side plate (502), and the second side plate
(502) it is located at the outside of the first side plate (501), first side plate (501) and the second side plate (502) are corresponded and mutually put down
It goes, a connecting rod (503) is fixed on first side plate (501), the connecting rod (503) runs through the second side plate (502), the company
Be arranged on bar (503) elastic component (504), the elastic component (504) be set to the first side plate (501) and the second side plate (502) it
Between, the side channel profile of catenating slider (510), side pressure formed punch (520) and lower catenating slider (530) directing chamber (110) in each group
And the top surface of low punch (300) forms powder filled cavity (600) in type chamber (110).
2. powder forming unit according to claim 1, which is characterized in that the upper catenating slider (510), lower linkage are slided
Block (530) and side pressure formed punch (520) three are of same size in guide groove (120), and the sum of thickness of three and guide groove
(120) depth is identical.
3. powder forming unit according to claim 2, which is characterized in that the side pressure punch-head assembly (500) and guiding
Slot (120) clearance fit, gap W meet: 0.005mm≤W≤0.01mm.
4. according to claim 1 to powder forming unit described in 3 any one, which is characterized in that the guide groove (120) two
Side is equipped with groove (121), and side pressure formed punch (520) two sides are equipped with the convex block (521) that can cooperate with the groove (121).
The length of groove.
5. according to claim 1 to powder forming unit described in 3 any one, which is characterized in that die body (100) appearance
Face be equipped with the first side plate (501) against stop surfaces (101).
6. according to claim 1 to powder forming unit described in 3 any one, which is characterized in that the upper catenating slider
(510) with a thickness of H1, meet: 1.5mm≤H1≤2.5mm.
7. a kind of powder forming unit, including die body (100), upper punch (200) and low punch (300), the upper punch (200)
It can be moved up and down respectively along die body (100) axis with low punch (300), die body (100) upper surface is equipped at least three and leads
To slot (120), the guide groove (120) is arranged circumferentially along die body (100), and the low punch (300) is equipped with mandrel
(400) and mandrel (400) can run through die body (100), which is characterized in that a side pressure punching is inserted in each guide groove (120)
Head assembly (500), the side pressure punch-head assembly (500) include upper catenating slider (510), lower catenating slider (530) and side pressure punching
Head (520), the upper catenating slider (510) and lower catenating slider (530) pass through two the first side plates (501) be fixed into one it is whole
Body, first side plate (501) are located at guide groove (120) outside, and the side pressure formed punch (520) is movably inserted in linkage and slides
In gap between block (510) and lower catenating slider (530), the side pressure formed punch (520) is set there are two the second side plate (502),
And second side plate (502) be located at the outside of the first side plate (501), first side plate (501) and the second side plate (502) one are a pair of
It answers and is parallel to each other, a connecting rod (503) is fixed on first side plate (501), the connecting rod (503) runs through the second side plate
(502), it is arranged an elastic component (504) on the connecting rod (503), the elastic component (504) is set to the first side plate (501) and second
Between side plate (502), catenating slider (510), side pressure formed punch (520) and lower catenating slider (530) are directed toward die body (100) in each group
Powder filled cavity (600) are formed between the top surface of axial side channel profile and low punch (300).
8. a kind of forming method of the powder forming unit as described in claim 1 to 6 any one, which is characterized in that including
Following steps:
S1, filler: upper punch (200) is moved to above type chamber (110), and side pressure punch-head assembly (500) is mobile along guide groove (120)
To plesiotype chamber (110) are leaned on, until the first side plate (501) offset with die body (100), low punch (300) is protruded into type chamber (110) simultaneously
Close to lower catenating slider (530), at this point, catenating slider (510), side pressure formed punch (520) and lower catenating slider (530) refer in each group
The top surface of side channel profile and low punch (300) to type chamber (110) forms powder filled cavity (600) in type chamber (110), into
The filling of row powder；
S2, compacting: upper punch (200) and low punch (300) move toward one another the setting position for reaching compacting, each side pressure formed punch
(520) setting position of compacting is reached to type chamber (110) center movement, common compaction of powders makes powder compacting, and forms pressure
Base (700)；
S3, demoulding: each side pressure formed punch (520) is exited to the direction of remote release chamber (110), later, upper punch (200), green compact
(700) it rising to leave type chamber (110) together with low punch (300), upper punch (200) continues to rise and leave green compact (700),
It takes out green compact (700), later, upper punch (200) and low punch (300) respectively return to initial position.
9. the forming method of powder forming unit according to claim 8, which is characterized in that in step sl, under described
The initial position of formed punch (300) is the lower section that low punch (300) are moved to lower catenating slider (530) upper surface, and the two is vertical
Difference in height on direction is H2, is met: 1.5mm≤H2≤2.5mm.
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| CN113084160A (en) * | 2021-04-06 | 2021-07-09 | 株洲钻石切削刀具股份有限公司 | Alloy blade forming device and forming method thereof |
| CN114472887A (en) * | 2021-12-30 | 2022-05-13 | 山东大学 | Forming die and forming method for blade with multi-powder structure in circumferential direction |
| CN116060619A (en) * | 2023-03-29 | 2023-05-05 | 贵阳立特精密机械有限公司 | Powder forming die, powder forming equipment and use method |
| CN118003686A (en) * | 2024-04-08 | 2024-05-10 | 广东创芯旗智能工业有限公司 | Powder forming machine capable of reflecting filler |
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