CN103143712B - Female die floating device of a shaping machine for powder sintering parts - Google Patents
Female die floating device of a shaping machine for powder sintering parts Download PDFInfo
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- CN103143712B CN103143712B CN201310073723.XA CN201310073723A CN103143712B CN 103143712 B CN103143712 B CN 103143712B CN 201310073723 A CN201310073723 A CN 201310073723A CN 103143712 B CN103143712 B CN 103143712B
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- female die
- oil cylinder
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- pressure
- control valve
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- 238000007667 floating Methods 0.000 title claims abstract description 10
- 238000007493 shaping process Methods 0.000 title abstract description 11
- 238000005245 sintering Methods 0.000 title abstract description 8
- 239000000843 powder Substances 0.000 title abstract description 4
- 238000004663 powder metallurgy Methods 0.000 claims description 7
- 230000010339 dilation Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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- Powder Metallurgy (AREA)
Abstract
The invention discloses a female die floating device of a shaping machine for powder sintering parts. A first main guide post and a second main guide post are connected with a first female die plate and a second female die plate respectively; a first lower bottom plate and a second lower bottom plate are connected; a piston connected with the first main guide post and an oil cylinder body provided with an oil cylinder cover on the first lower bottom plate form a guide post oil cylinder; a die core and a female die piston are glidingly matched with the second female die plate; a female die clamping ring is fixed to form a female die oil cylinder; guide posts and the female die oil cylinder are connected with one end of an adjusting valve; and the other end of the adjusting valve is connected with a low-pressure oil pipe. The device is simple in structure, the guide posts and the female die oil cylinder are only needed to be added on the first female die plate or the second female die plate, when upper and lower punches are about to be contacted with upper and lower end surfaces of a product, pressure inside the oil cylinder is adjusted by the adjusting valve, and pressure of the first female die plate or the die core in the second female die plate is released instantly, so that the device is free from pressure and friction, only upper and lower punches produce identical upper and lower pressure, upper and lower linear expansion dimensions of the product outer diameter are identical, and upper and lower dimensions of the inner diameter and the outer diameter of the product are identical.
Description
Technical field
The present invention relates to the vitals on a kind of trimmer, particularly powder compaction product carry out the powder metallurgy part trimmer bed die floating device of shaping use after sintering.
Background technology
According to the production technology of powder compaction product, pulverulent product also needs could use after sintering shaping, and existing trimmer because of the stressed undershoot that is greater than of product upper punch stressed, so the upper linear of product external diameter expands large after shaping, lower linear expands little, there will be the situation that product parts upper big, lower small size is inconsistent, even there is underproof phenomenon, if especially some strength members do not reach dimensional requirement, there will be stuck or loosening phenomenon after just cannot installing or install, directly affect use.
The patent No. 200910235011.7 " powder metallurgy sizing die frame ", though also provide a kind of mould bases sintered metal product after sintering being carried out to finishing again, make the upper and lower finishing pressure be subject to of finishing part consistent, guarantee the machining accuracy of finishing part, but its former when suppressing can not float, the effect that resistance does not greatly also reach, operates simultaneously and comparatively bothers.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of powder metallurgy part trimmer bed die floating device, make the shaping product after sintering on trimmer during shaping, the upper and lower suffered pressure of shaping product is identical, reach shaping product outside dimension unanimous between the higher and lower levels, meet product requirement, guarantee the precision sintering shaping product, improve product percent of pass and operating efficiency, reduce production cost.
The present invention's adopted technical scheme that solves the problem is: powder metallurgy part trimmer bed die floating device, comprise negative template, lower shoe, leading post, the undershoot of cored bar be fixed on lower shoe with upper punch, negative template coordinates, first leading post respectively with the first negative template, first lower shoe connects, described first leading post is connected with piston, coordinate with the cylinder body with oil cylinder cover on the first lower shoe and form guide pillar oil cylinder, described guide pillar oil cylinder is connected with one end of control valve, the other end of control valve is connected with low-pressure oil pipe, described control valve is by overflow valve, magnetic valve, check valve parallel connection is formed, or second leading post be connected with the second negative template, the second lower shoe respectively, described second negative template is equipped with core rod, former piston, be fixed with former trim ring and form former oil cylinder, described former oil cylinder is connected with one end of control valve, the other end of control valve is connected with low-pressure oil pipe, and described control valve is made up of overflow valve, magnetic valve, check valve parallel connection.
Compared with prior art, the invention has the advantages that: this bed die floating apparatus structure is simple, only on lower shoe or negative template, increase guide pillar oil cylinder or former oil cylinder, and make each oil cylinder and overflow valve, magnetic valve, the one end of the control valve that check valve parallel connection is formed connects, the other end in parallel is connected with low-pressure oil pipe, guide pillar or former oil cylinder is utilized in reforming process, work as upper punch, upper to product of undershoot, when lower surface just will contact, control valve is utilized to regulate oily in-cylinder pressure to force bed die floating, the pressure of core rod to product in abrupt release first negative template or the second negative template makes it without pressure, zerofriction force, and only by upper, on undershoot produces, lower identical pressure, now product external diameter is upper, lower linear dilation dimension is also equal, thus reach in product, the upper and lower size of external diameter is the same.Both by former upper punch press power=former frictional force+undershoot holding capacity, changed over upper punch press power=undershoot holding capacity, both eliminated former frictional force.
Accompanying drawing explanation
Fig. 1, first scheme structural representation of the present invention (pressure oil pipe figure omits, off working state).
Fig. 2, first scheme structural representation of the present invention (duty).
Fig. 3, alternative plan structural representation of the present invention (pressure oil pipe figure omits, off working state).
Fig. 4, alternative plan structural representation of the present invention (duty).
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are further described.
The end that every root first dominates post 4 is fixed with piston 7, the upper end of four first leading posts 4 is fixed on the lower surface of negative template 3 through the shoulder hole on negative template 3 by screw, lower end is arranged in step-like four cylinder bodies 9 of lower shoe 8 respectively, the bottom surface of each cylinder body 9 is screwed an oil cylinder cover 10, form four guide pillar oil cylinders 23, the centre that there is through hole centre, the lower end of stairstepping undershoot 6 is fixed on lower shoe 8 upper surface, upper end is inserted in the through hole in the middle of negative template 3, as shown in Figure 1.
Lower shoe 8 is fixed on the bottom surface of trimmer frame, and upper punch 1 is connected with the slide block on trimmer actuating unit (scheming not draw).
The sidewall of four cylinder bodies 9 has horizontal through hole, and the one end of the control valve consisted of with by overflow valve 12, magnetic valve 13, check valve 14 parallel connection respectively oil pipe 11 is connected, and the control valve other end is connected with low-pressure oil pipe 15.
During work, the product 2 of shaping is needed to be placed on negative template 3 intermediate coat chamber by after sintering, as shown in Figure 1, upper punch 1 moves down under the effect of power source slide block, drive and force the negative template 3 linked together with product to move down, and motionless plug 5 inserts in upper punch 1 through hole, until undershoot 6 encounters the lower surface of product 2 soon, upper punch encounters the moment of the upper surface of product soon, magnetic valve 13 action in control valve, reduce the in-oil cylinder instantaneous pressure of guide pillar, leading post 4 held up negative template 3 and made it float without pressure this moment first, negative impression on negative template 3 to product 2 also without support force and frictional force, product 2 only has from upper punch 1, the power of undershoot 6 both ends of the surface is also equal pressure, now product external diameter is upper, lower linear dilation dimension is also equal, thus reach on product internal-and external diameter, the qualified products that lower size is the same, as shown in Figure 2, then lower dead center is broken through on, upper punch 1 rises, undershoot 6 moves up under other dynamic action, at this moment after product 2 ejects negative template 3 by undershoot 6, undershoot rolls back lower dead center 6 times, low-pressure oil pipe 15 oil is by check valve 14 simultaneously, cylinder body 9 makes negative template 3 reset, magnetic valve 13 cuts out simultaneously.
Alternative plan:
The lower end of four second leading posts 20 is screwed on the upper surface of the second lower shoe 21, and upper end is screwed on the lower surface of the second negative template 16, and the undershoot 6 with plug 5 is the same with such scheme to be fixed in the middle of the second lower shoe 21 upper surface.
Have stairstepping through hole in the middle of second negative template 16, sidewall has horizontal through hole insertion oil pipe 11 connect the one end of the control valve be made up of overflow valve 12, magnetic valve 13, check valve 14 parallel connection, the control valve other end is connected with low-pressure oil pipe 15.
Be equipped with former piston 19, core rod 18 successively in second negative template stairstepping through hole, in the groove of core rod edge, place former trim ring 17, also with screw, former trim ring 17 is fixed on the inwall place formation former oil cylinder 22 of the second negative template 16, as shown in Figure 3.
During use, upper punch 1 moves down under dynamic action, until product 2 is pressed in core rod 18 by upper punch 1, in upper punch 1 in the process pressed down, drive former piston 19 to move down by core rod 18 simultaneously, until on, undershoot encounters the upper of product 2 soon, the moment of lower surface, pass through control valve, magnetic valve action regulates the pressure in former oil cylinder 22, in former oil cylinder, abrupt release is to the pressure of product 2, because core rod floats to product without pressure, zerofriction force, at this moment product 2 only has from upper, the pressure that undershoot both ends of the surface are equal, thus make the upper of product external diameter, lower linear dilation dimension is equal, reach in product, on external diameter, the object of lower consistent size, as shown in Figure 4.
Then lower dead center is broken through on; upper punch 1 rises; undershoot 6 moves up under other dynamic action; at this moment; product 2 rolls back lower dead center under undershoot after ejecting core rod 18 by undershoot 6, and the oil of low pressure pipe 15 is by check valve 14, oil pipe 11, former oil cylinder 22 simultaneously; make former piston 19, core rod 18 resets, simultaneously closed electromagnetic valve.
Claims (2)
1. a powder metallurgy part trimmer bed die floating device, comprise negative template, lower shoe, leading post, the undershoot (6) of cored bar (5) be fixed on lower shoe with upper punch (1), negative template coordinates, it is characterized in that the first leading post (4) respectively with the first negative template (3), first lower shoe (8) connects, described first leading post (4) is connected with piston (7), coordinate with the cylinder body (9) with oil cylinder cover (10) on the first lower shoe (8) and form guide pillar oil cylinder (23), described guide pillar oil cylinder (23) is connected with one end of control valve, the other end of control valve is connected with low-pressure oil pipe (15), described control valve is by overflow valve (12), magnetic valve (13), check valve (14) parallel connection is formed, or second leading post (20) be connected with the second negative template (16), the second lower shoe (21) respectively, described second negative template is equipped with core rod (18), former piston (19), be fixed with former trim ring (17) and form former oil cylinder (22), described former oil cylinder (22) is connected with one end of control valve, the other end of control valve is connected with low-pressure oil pipe (15), and described control valve is made up of overflow valve (12), magnetic valve (13), check valve (14) parallel connection.
2. powder metallurgy part trimmer bed die floating device according to claim 1, it is characterized in that described first, second leading post (4,20) all has four, the end that every root first dominates post (4) is connected with piston (7), be with the cylinder body of oil cylinder cover (10) (9) to coordinate for upper with the first lower shoe (8) four respectively, form four guide pillar oil cylinders (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073723.XA CN103143712B (en) | 2013-03-08 | 2013-03-08 | Female die floating device of a shaping machine for powder sintering parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073723.XA CN103143712B (en) | 2013-03-08 | 2013-03-08 | Female die floating device of a shaping machine for powder sintering parts |
Publications (2)
| Publication Number | Publication Date |
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| CN103143712A CN103143712A (en) | 2013-06-12 |
| CN103143712B true CN103143712B (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310073723.XA Active CN103143712B (en) | 2013-03-08 | 2013-03-08 | Female die floating device of a shaping machine for powder sintering parts |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625074B (en) * | 2015-01-30 | 2017-04-05 | 苏州莱特复合材料有限公司 | A kind of new powder metallurgy split middle mold with the level |
| CN105537597A (en) * | 2015-12-19 | 2016-05-04 | 扬州市海力精密机械制造有限公司 | Female mould floating device of powder product finishing machine and finishing process of female mould floating device |
| CN110576179B (en) * | 2019-10-21 | 2022-04-08 | 重庆华孚工业股份有限公司 | Powder metallurgy processing technology for gearbox sprocket |
| CN114953577B (en) * | 2022-05-27 | 2023-07-07 | 成都正西液压设备制造有限公司 | Novel powder hydraulic press |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57161004A (en) * | 1981-03-31 | 1982-10-04 | Glory:Kk | Production of multicolored metallic parts |
| CN2544938Y (en) * | 2002-04-04 | 2003-04-16 | 吴宣 | Die frame for full-automatic dry powder hydrautic machine |
| CN2611138Y (en) * | 2002-11-25 | 2004-04-14 | 严培义 | Powder formation machine |
| CN2759648Y (en) * | 2004-12-24 | 2006-02-22 | 上海汽车股份有限公司 | Powder metallurgy compressing shaping equipment |
| CN100336658C (en) * | 2005-12-23 | 2007-09-12 | 严培义 | Bed die floating regulating mechanism of powder forming machine |
| CN101875127B (en) * | 2009-11-16 | 2011-12-21 | 南京东部精密机械有限公司 | Powder metallurgy sizing die frame |
| CN102581286A (en) * | 2012-03-21 | 2012-07-18 | 山东冠泓数控装备有限公司 | Finishing device |
| CN203124737U (en) * | 2013-03-08 | 2013-08-14 | 严培义 | Female die floating device for powder sintering part shaping machine |
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| CN103143712A (en) | 2013-06-12 |
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Effective date of registration: 20170627 Address after: 315204 Zhejiang province Ningbo Zhenhai Xiepu Kwong Yuen Industrial Zone Patentee after: NINGBO HUIZHONG POWDER MACHINERY MAKING CO., LTD. Address before: 315204 Zhejiang Province, Ningbo Zhenhai Xiepu Guangyuan Industrial Zone Ningbo Huizhong powder machinery manufacturing Co. Ltd. Patentee before: Yan Peiyi |