CN1608766A - Metal die for press working and press working method - Google Patents

Metal die for press working and press working method Download PDF

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Publication number
CN1608766A
CN1608766A CNA200410088222XA CN200410088222A CN1608766A CN 1608766 A CN1608766 A CN 1608766A CN A200410088222X A CNA200410088222X A CN A200410088222XA CN 200410088222 A CN200410088222 A CN 200410088222A CN 1608766 A CN1608766 A CN 1608766A
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China
Prior art keywords
mentioned
lubricating fluid
formpiston
liquid pool
metal die
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Granted
Application number
CNA200410088222XA
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Chinese (zh)
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CN100384562C (en
Inventor
村田敬一
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Idemitsu Kosan Co Ltd
Panasonic Holdings Corp
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Idemitsu Kosan Co Ltd
Matsushita Electric Industrial Co Ltd
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Publication of CN1608766A publication Critical patent/CN1608766A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0088Lubricating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/34Perforating tools; Die holders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34Heating or cooling presses or parts thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00Presses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

The invention provides a metal mold for press working and a press working method, wherein a lubricating liquid pool (10) for storing lubricating liquid is formed on the whole or part of the outer peripheral surface (13a) of the overlapped part of a male mold (1) or the inner peripheral surface (24a) of the overlapped part of a female mold (2) when the male mold (1) and the female mold (2) which are mutually embedded and cut the material are overlapped, thereby fully supplying the lubricating liquid to the cut part and eliminating the problem of insufficient lubrication when the material is cut.

Description

Metal die for pressure processing and pressure processing method
Technical field
The present invention relates to a kind of at metallic plate etc. cut-out processing or punching processing in employed metal die for pressure processing, particularly employed metal die for pressure processing and the pressure processing method that uses this metal die during a kind of manufacturing of the fin that in heat exchangers such as cooler, uses.
Background technology
All the time, be manufactured on automobile with the fin that uses in the heat exchangers such as cooler or room cooler by the pressure processing shown in Figure 11 (a).This pressure processing mainly is made of following operation: remove the punching, deburring (die-cut burr) operation of burr on the preform operation that is used to processed metallic plates such as aluminium are processed easily, the metallic plate behind preform in the punching, the hole peripheral ledge that processes from metallic plate forms shaping (ironing) operation of the collar and the overturning process that formed collar front end is carried out bending.By on metallic plates such as aluminium, implementing this pressure processing, can make the plate fin shown in Figure 11 (b).
In this pressure processing, in order to improve processing characteristics, metal die and metallic plate lubricated extremely important.For example, the spy open flat 7-112227 communique (patent documentation 1) with real open clear 61-102323 communique (patent documentation 2) introduced with pressure processing in lubricated relevant prior art, hereinafter will introduce this prior art.
At present, in the pressure processing that is used for making radiator fin for heat exchanger etc. lubricated, use hydrocarbon system lubricating oil.Hydrocarbon system lubricating oil is that lubricating oil is different with previously used mineral oil, owing to need do not cleaned by the organochlorine series solvent, is extensive use of so can be used as the lubricating fluid of the environment that helps preserving our planet.
When using hydrocarbon system lubricating oil to carry out pressure processing, manufacturing efficient from fin, heat attached to the lubricating oil on the fin processing the back, make its evaporation drying, hydrocarbon system lubricating oil after evaporation is discharged in the atmosphere, the processing that needs enforcement to be undertaken by the catalyst burning, and, in pressure processing, in use and the hydrocarbon system lubricating oil, must carry out predetermined process to industrial waste with recovered in liquid state.Set out by this situation, when using hydrocarbon system lubricating oil, cost costs a lot of money in catalyst burning and the post processings such as waste treatment as industrial waste.And the cry of the environment of preserving our planet at present is very high, wishes to use the lubricating fluid that more helps environment.
Patent documentation 1: the spy opens flat 7-112227 communique
Patent documentation 2: open clear 61-102323 communique in fact
In the last few years, the technological development of carrying out in the processing of metals such as cutting, making water always or soluble oil being dissolved in the water system lubricating fluid replacement hydrocarbon system lubricating oil in the water.If water or water system lubricating fluid are lubricated, just can alleviate the waste treatment of catalyst burning processing or industrial waste, can realize the manufacturing that natural environment is not damaged.And, can realize manufacturing installation and production line miniaturization by alleviating the post processing of using behind the lubricating fluid, can reduce cost significantly.But water or water system lubricating fluid are compared with hydrocarbon system lubricating oil, have the problem of poor lubricity.
In the manufacturing of recent radiator fin for heat exchanger etc., in order to improve lubricity, as the fin rapidoprint, use on thickness is the surface of aluminum plate of 0.1 millimeter, to have applied with the lubricated tunicle aluminium sheet of band as the lubricated tunicle of main component such as ethylene glycol.Drawn following result in the preliminary experiment that before the present invention, carries out: when using this band to lubricate the tunicle aluminium sheet, in the pressure processing operation, in preform, deburring, shaping and the overturning process outside punching (perforation), by lubricating that water or water system lubricating fluid carry out, do not produce special problem.
But in the punching operation, even use the lubricated tunicle aluminium sheet of band, the aluminum portions that exposes at shear surface directly contacts with metal die.Therefore, when carrying out this operation repeatedly, wait the heat that produces, and cause that formpiston and former are burnt, the damaged such problem (with reference to Figure 13) of metal die by friction.
And, the lubricated tunicle of the lubricated tunicle aluminium sheet of band is by water-soluble substances manufacturings such as ethylene glycol, if so the sheet material that will process is made water in a large number or comprises the water system lubricating fluid of big water gaging, then lubricated tunicle can be rinsed, lubricity descends, subsequent handling is exerted an influence, and this point has been obtained clearly by the preliminary experiment that the inventor carries out.Thereby, when punching, consider the local lubricating fluid of supplying with in the position that needs lubricating fluid, can be very effective.
As the technology of part supply lubricating fluid, above-mentioned patent documentation 1 has been introduced a kind of metal mould device, can be to the local supply pressure processing oil of the part of carrying out pressure processing of drift leading section that uses in trimming and material.In above-mentioned patent documentation 2, introduced a kind of pierce punch, can to the local supplying lubricating oil of leading section periphery of the pierce punch of the shear surface sliding-contact of machined material.
And used hydrocarbon system lubricating oil at the on-the-spot employed pierce punch of the pressure processing of radiator fin for heat exchanger in the past, the release parts of being introduced with above-mentioned patent documentation 1 (knock-outs will) are identical, portion is provided with oil passage within it, can be to the local supplying lubricating oil of pierce punch leading section periphery.Figure 12 has shown this former pierce punch and the deburring drift that constitutes former.
As shown in figure 12, in pierce punch 101, the oil passage 133 that setting axially connects from its base portion 117 to front end edge, and the radially lubricating oil spray-hole 135 of outer peripheral face 113 upper sheds of pierce punch 101 be arranged on base portion 117 below and do not interfere on the position of (not forming chimeric) with the inner face of the receiver hole 128 of deburring drift 102.
Utilize this structure, lubricating oil is supplied on the fore-end and outer peripheral face 113 of pierce punch 101 by the part.And deburring drift 102 is the drifts that have with the former shape of the chimeric receiver hole 128 of pierce punch 101.
But, comprise this former oil passage and the metal die of spray-hole, be unsuitable for making water or water system lubricating fluid.This is because use this metal die in the past, on one side be lubricated by the water system lubricating fluid, on one side to being with lubricated tunicle aluminium sheet to carry out punching, then because lack of lubrication can make the leading section of pierce punch 101 and deburring drift 102 burn, deburring drift 102 ruptures.
In fact, use the metal die before this to carry out punching to being with lubricated tunicle aluminium sheet with the speed of per minute 200~210 times, after about punching 90,000 2 thousand times, the metal die breakage, Figure 13 has shown the SEM photo of the state of the former metal die of representing this breakage.With reference to Figure 13 (a), pierce punch 101 and deburring drift 102 burns, the leading section fracture of deburring drift 102, its fragment anchors on the outer peripheral face of pierce punch.Figure 13 (b) is the photo of amplification that encloses part among Figure 13 (a) with tetra-pack, clearly from figure finds out, the front periphery portion of pierce punch 101 becomes quite coarse because of friction etc. is former thereby surperficial.
Summary of the invention
Even the object of the invention provides a kind of metal die that also can suppress to be caused by friction and burns when making water or water system lubricating fluid, and is suitable for practical metal die for pressure processing and pressure processing method.
To achieve these goals, in metal die for pressure processing of the present invention, on the coincidence part outer peripheral face of the above-mentioned formpiston that when chimeric and formpiston that material is cut off and former are chimeric mutually, overlaps or the coincidence part inner peripheral surface of former, be formed with all or part of of the lubricated liquid pool of at least temporarily storing lubricating fluid, this is the topmost structure of the present invention.
By above-mentioned formation, in the lubricated liquid pool on the inner peripheral surface of outer peripheral face that is arranged on formpiston or former, can temporarily store lubricating fluid at least.If store lubricating fluid in lubricated liquid pool, stored lubricating fluid flows through between formpiston and the former fully and waits between formpiston and the metallic plate needs lubricated position especially, the frictional resistance minimizing at this position.And, owing on the coincidence part that formpiston and former overlap, form all or part of of lubricated liquid pool, thus can be efficiently to the frictional heat generating unit, just formpiston and former both sides' coincidence part is lubricated expeditiously and cools off.
And the present invention can be provided with recess as lubricated liquid pool at least a portion of the inner peripheral surface of the outer peripheral face of formpiston or former.
Adopt this structure, because the area of the sliding-contact of formpiston and former part reduces, the friction area of metal die reduces, the generation of containment frictional heat.Particularly when at least a portion of lubricated liquid pool was arranged on the coincidence part outer peripheral face that formpiston and former overlap, the area of metal die and metallic plate (machined material) sliding-contact part reduced, and can further contain the generation of frictional heat.If use the water system lubricating fluid as lubricating fluid,, can cool off metal die effectively because the specific heat of water system lubricating fluid is big.
And above-mentioned lubricated liquid pool forms the minor diameter part with external diameter also littler than formpiston front end external diameter on the coincidence part outer peripheral face of formpiston, or forms the large-diameter portion with internal diameter also bigger than the internal diameter of above-mentioned former opening ora terminalis on the coincidence part inner peripheral surface of former.
By adopting said structure, above-mentioned minor diameter part or large-diameter portion can be provided with the lubricated liquid pool of easy processing and realization high-lubricity and high cooling effect by formation such as machining when making metal die on metal die.
And above-mentioned formpiston or former are provided with lubricating fluid path from lubricating fluid to lubricated liquid pool that supply with.
Adopt this structure, lubricating fluid can be supplied with lubricating fluid to lubricated liquid pool really effectively by the lubricating fluid path.If the lubricating fluid path begins to be located in above-mentioned formpiston inside from the base portion of formpiston, be communicated with the lubricated liquid pool on being formed on formpiston coincidence part outer peripheral face, then, lubricating fluid lubricates liquid pool, so can further reliably and efficiently lubricating fluid be supplied in the lubricated liquid pool on the formpiston coincidence part outer peripheral face because arriving by the internal flow of formpiston.
And; the lubricating fluid path is communicated with by the axial passageway that begins to wear vertically from the formpiston base portion and with above-mentioned axial passageway and constitutes along comprising the tributary circuit of above-mentioned formpiston radial direction composition in interior direction extension; in the part that axial passageway and tributary circuit intersect, be provided with the flow direction that makes lubricating fluid from formpiston axially to comprising the impact walls that the radial direction composition changes in interior direction.
If employing said structure, the lubricating fluid that flows through axial passageway collide above-mentioned impact walls and flow to tributary circuit.Thereby can further reliably efficiently lubricating fluid be supplied in the lubricated liquid pool on the formpiston coincidence part outer peripheral face.
And, at least a portion chamfering of lubricated liquid pool periphery.
By adopting this structure, easily from lubricated liquid pool to contact, bear the load maximum, need most lubricated part just metal die front end or openend with metallic plate such as aluminium, flow out also supply lubricating fluid.Thereby, can further improve lubricating and cooling performance of metal die, the burn of containment metal die.
And the lubricated liquid pool and the front end of formpiston or the distance of lubricated liquid pool and former opening ora terminalis partly diminish.
If adopt this structure, lubricated liquid pool is partly near bearing load the best part just metal die front end or openend, and in this part, the lubricating fluid of lubricated liquid pool becomes easy to the mobile of formpiston front end or former openend.On the other hand, can guarantee outside formpiston front end or the former openend part to metallic plates such as aluminium cut off, necessary intensity when boring a hole.Thereby, on one side can keep processing necessary metal die intensity, efficiently formpiston front end or former openend are lubricated simultaneously.
And, as the lubricating fluid that supplies to lubricated liquid pool, make water or soluble oil is dissolved in hydrographic lubricant in the water, then can not damage natural environment ground makes, can reduce cost simultaneously, simplify processing unit (plant) and machining production line, can miniaturization.
And, pressure processing method of the present invention has following operation: when using above-mentioned metal die for pressure processing that the metal sheet continuous several times is bored a hole, during till from above-mentioned formpiston and former chimerism to equal state next time, on all or part of is formed on the coincidence part inner peripheral surface of the coincidence part outer peripheral face of the formpiston that above-mentioned formpiston and former overlap when chimeric or former, at least temporarily the lubricated liquid pool of storing lubricating fluid is supplied with lubricating fluid.
By like this, can in each press cycle process, supply with lubricating fluid to lubricated liquid pool, in each press cycle process lubricating fluid can at least temporarily be stored in lubricated liquid pool, so can improve the lubricated and cooling effectiveness of the mutual coincidence part that overlaps when chimeric of formpiston and former.
In metal die for pressure processing of the present invention, by on formpiston or former, forming lubricated liquid pool, can carry out the metal die leading section supply lubricating fluid of sufficient lubrication to needs, improve lubricant effect.And, by lubricated liquid pool is set, can dwindle the area of metal die friction portion.Thus, a kind of metal die for pressure processing can be provided,, also can contain the burn that causes by the metal die friction even in pressure processing, make water or water system lubricating fluid etc., even when making water or water system lubricating fluid replace pressure processing oil, also be suitable for practicality.
And, in pressure processing method of the present invention, using above-mentioned metal die, under the state in lubricating fluid is stored in lubricated liquid pool, formpiston and former are chimeric, so improved the lubricated and cooling effectiveness of the coincidence part that formpiston and former overlap.Therefore, can provide a kind of pressure processing method of practicality,, also can contain the unfavorable conditions such as burn of the metal die that causes by friction even use the low water system lubricating fluid of lubricity.
And because in metal die for pressure processing of the present invention, even under the situation of using the water system lubricating fluid of comparing poor lubricity with hydrocarbon system lubricating oil, also be suitable for practicality, so when using existing hydrocarbon system lubricating oil, can obtain to improve the effect in metal die life-span.
Description of drawings
Fig. 1 is that punching, the deburring of embodiment of the present invention 1 amplified longitudinal section with the part of metal die.
Fig. 2 is expression punching shown in Figure 1, longitudinal section was amplified in the part of state when deburring used metal die chimeric.
Fig. 3 is expression punching shown in Figure 1, longitudinal section was amplified in the part of state when the metal die die sinking was used in deburring.
Fig. 4 is the punching of expression use embodiment of the present invention 1, the state of the metal die after the punching has been implemented in deburring with metal die SEM photo.
Fig. 5 is that punching, the deburring of embodiment of the present invention 2 amplified longitudinal section with the part of metal die.
Fig. 6 is that longitudinal section is amplified in the part of the pierce punch of embodiment of the present invention 3.
Fig. 7 is the figure that expression is formed on the example of the lubricated liquid pool on the formpiston of metal die for pressure processing of the present invention.
Fig. 8 is the figure that is illustrated in the example of lubricating fluid channel setting on the stripper plate of counterdie that will supply with lubricating fluid in the metal die for pressure processing of the present invention.
Fig. 9 is the figure that is illustrated in the example of lubricating fluid channel setting on the former edge ring of patrix that will supply with lubricating fluid in the metal die for pressure processing of the present invention.
Figure 10 is the figure that is illustrated in the example of lubricating fluid channel setting in the deburring drift that will supply with lubricating fluid in the metal die for pressure processing of the present invention.
Figure 11 is an expression fin manufacturing procedure and as the figure of the plate fin of goods.
Figure 12 is the longitudinal section that metal die is used in former punching, deburring.
Figure 13 is to use punching shown in Figure 12, deburring to implement the SEM photo of the state of the metal die after the punching with metal die.
Among the figure: 1-pierce punch (formpiston), 2-deburring drift (former), 10-lubricates liquid pool, 13a-coincidence part outer peripheral face, 15-leading section, the 17-base portion, 24a-coincidence part inner peripheral surface, 26-leading section, 31-lubricating fluid path, the 33-axial passageway, 35-tributary circuit, 37-impact walls, 51-chamfered part.
The specific embodiment
The hereinafter with reference accompanying drawing is introduced embodiments of the present invention.The present invention is not limited to this embodiment.
Fig. 1 (a) shows metal die for pressure processing of the present invention is applicable to punching, the deburring part amplification longitudinal section of the embodiment 1 of metal die.In metal die shown in Figure 1, use respectively as the punching of on metallic plate, boring a hole with the pierce punch 1 of formpiston and as the deburring drift 2 of former.Pierce punch 1 and deburring drift 2 are respectively by the superhard alloy manufacturing.The deburring that pierce punch 1 disposes with surrounding it constitutes patrix 5 with former edge ring 3, and deburring drift 2 constitutes counterdie 6 with the stripper plate 4 around being arranged on it.
Pierce punch 1 and deburring drift 2 are bored a hole on the metallic plate that is arranged between them by shearing force, embed in the deburring drift 2 and chimeric mutually by pierce punch after perforation 1.
The outer peripheral face 13 of pierce punch 1 is provided with lubricated liquid pool 10.In the present embodiment, lubricated liquid pool 10 is formed with the minor diameter part with external diameter also littler than the external diameter at punching drift 1 leading section 15 places.Fig. 1 (b) be shown enlarged in pierce punch 1 and deburring drift 2 when chimeric separately outer peripheral face and the figure of the scope of inner peripheral surface the coincidence part 13a, the 24a that overlap, as shown in the figure, the lubricated liquid pool 10 of pierce punch 1 is arranged on the coincidence part outer peripheral face 13a of pierce punch 1.In this embodiment, constituting the minor diameter part that lubricates liquid pool 10 is arranged on the position of pierce punch 1 front-end edge 15a specific length.This is to have full intensity on the leading section 15 in order to ensure the pierce punch 1 that bears bigger load (load) when the punching.
Pierce punch 1 has the lubricating fluid path 31 that links to each other with lubricated liquid pool 10.As shown in the figure, lubricating fluid path 31 is located in pierce punch inside from pierce punch base portion 17, communicates with lubricated liquid pool 10 on being formed on coincidence part outer peripheral face 13a.The lubricating fluid path 31 of present embodiment by the axial passageway 33 that wears vertically from base portion 17, communicate with this axial passageway 33 and the tributary circuit 35 that radially extends along pierce punch 1 constitutes.
But be not limited to this structure, can be that axial passageway 33 on the pierce punch 1 and the tributary circuit (not shown) that extends along the direction that comprises radial component from this axial passageway 33 constitute lubricating fluid path 31 by being located in formpiston also, the vertical section of described tributary circuit be branched off into the font of falling Y and communicates with lubricated liquid pool 10.
In the present embodiment, though lubricating fluid path 31 is arranged on the formpiston inside of pierce punch 1 just, if can supply with lubricating fluid to lubricated liquid pool 10, then also can be on one of formpiston and former with the lubricating fluid channel setting.And can be arranged on the inside of metal die, also can be arranged on the outside.And in the present embodiment, 2 tributary circuits 35 are set along radial direction, if but can guarantee the intensity of leading section 15, the tributary circuit 35 of right quantities such as 4 or 6 also can be set.
Shown in Fig. 1 (a), the part of the tributary circuit 35 of present embodiment is in the minor diameter part upper shed that forms lubricated liquid pool 10, simultaneously other parts on the position of the more close pierce punch 1 front-end edge 15a than this minor diameter part in the outer peripheral face upper shed of pierce punch.Thereby, by with the peristome 35a of tributary circuit 35 a part as lubricated liquid pool 10, its result, lubricated liquid pool 10 is formed on the shape that the distance of the peristome 35a place of tributary circuit 35 and pierce punch 1 front-end edge 15a partly diminishes.
Be arranged on the former even will lubricate liquid pool 10, also can lubricate liquid pool 10 should lubricated liquid pool 10 with forming apart from part of former opening ora terminalis 26a with diminishing.
And, on the part (tributary circuit 35 is from the branching portion of axial passageway 33 branches) that the axial passageway 33 of pierce punch 1 inside and tributary circuit 35 intersect, impact walls 37 is being set.And in the present embodiment,, form impact walls 37 by from pierce punch 1 front axial passageway 33 being attenuated with tributary circuit 35 cross-shaped portions, still, axial passageway 33 is stopped and formation impact walls 37 in impact walls 37.
As a reference, with reference to figure 1 (c), introduce a kind of example of size of pierce punch 1.In this example, the point diameter d of pierce punch 1 is 4.8 millimeters, and the axial length g from front-end edge to minor diameter part is 2 millimeters.The axial length of forming the minor diameter part of lubricated liquid pool 10 is 3.5 millimeters, caves in 0.2 millimeter (representing with f among Fig. 1 (c)) from the coincidence part outer peripheral face, and its diameter (external diameter) s is 4.4 millimeters.Thereby this moment, the volume of lubricated liquid pool 10 approximately was 10.11mm 3The lubricating fluid of the amount corresponding with this volume can be stored in the lubricated liquid pool 10.For the diameter of the axial passageway in the lubricating fluid path 31 33, in 37 scope from base portion 17 to impact walls, the i=2 millimeter, in the scope of 1 front end from impact walls 37 to pierce punch, the e=1 millimeter.The diameter j of tributary circuit 35 is 1.5 millimeters.
Former is a deburring drift 2 with the big slightly internal diameter opening of external diameter than the leading section 15 of punching drift 1, has the receiver hole 28 that can allow pierce punch 1 leading section enter.The inner peripheral surface 24 of receiver hole 28 have when pierce punch 1 and deburring drift 2 are chimeric overlap with the coincidence part outer peripheral face 13a of pierce punch 1, the coincidence part inner peripheral surface 24a of sliding-contact.From the coincidence part inner peripheral surface 24a of receiver hole 28 downwards on the part, 2 steps 44,45 that internal diameter downwards increases are set.The sheet metal that when 1 pair of metal plate perforation of pierce punch, produces fall easily deburring drift 2 below.
Hereinafter punching shown in Figure 1, deburring are introduced with the action of metal mould device.In the present embodiment, the following direction among Fig. 1 is the direction of insertion of pierce punch, and last direction is the direction of extracting of pierce punch.
After being arranged on the metallic plates such as aluminium sheet that have lubricating film of forming fin material on the stripper plate 4, patrix 5 descends.The front-end edge 15a of pierce punch 1 contacts this metallic plate, then, and former edge ring 3 and this metallic plate of stripper plate 4 clampings.Pierce punch 1 further descends, and in the time of in the receiver hole 28 of the leading section 15 embedding deburring drifts 2 of pierce punch 1, cuts off metallic plate by shearing force, to metal plate perforation.
After the perforation, when pierce punch 1 rose, deburring drift 2 also rose.By this rising, the hole peripheral of the metallic plate after the perforation is pushed in the extrusion portion 42 that is arranged on deburring drift 2 leading sections 26 from bottom to top, and the deburring acceptance division 46 by extrusion portion 42 and former edge ring 3 carries out the deburring operation.Then, patrix 5 rises, and deburring drift 2 descends, and the metallic plate after punching, the deburring processing is unloaded from deburring drift 2 by stripper plate 4, finishes described punching, deburring operation.
The effect of lubricated liquid pool 10 when hereinafter using Fig. 2 and 3 to introduce punching.Fig. 2 is presented at the chimeric state of pierce punch 1 and deburring drift in the metal die for pressure processing shown in Figure 12, and Fig. 3 shows the state that pierce punch 1 and deburring drift 2 break away from.Lubricating fluid is supplied with to metal die for pressure processing by forced feed devices such as gear pump not shown in the figures by pipe arrangement from jar not shown in the figures.The lubricating fluid of being supplied with flows downwards by axial passageway 33 from the base portion 17 of pierce punch 1, but wherein a part is changed to tributary circuit 35 travel directions that are communicated with lubricated liquid pool 10 under the effect of impact walls 37.Lubricating fluid is preferably in and does not supply in the lubricated liquid pool 10 with not containing gas in the liquid as far as possible.This is because if lubricating fluid does not supply in the lubricated liquid pool 10 with not containing gas, compares during then for example with vaporific supply lubricating fluid, and cooling property uprises.
When metal die shown in Figure 3 broke away from, the lubricating fluid that supplies in the lubricated liquid pool 10 flow to pierce punch 1 coincidence part outer peripheral face 13a downwards, and leading section 15 is lubricated.
When chimeric, the coincidence part inner peripheral surface 24a of deburring drift 2 stays the lubricating fluid that lubricates in the liquid pool 10 with storage and contacts, lubricating fluid flows between the coincidence part inner peripheral surface 24a of the coincidence part outer peripheral face of pierce punch 1 and deburring drift 2, respectively the coincidence part of pierce punch 1 and the coincidence part of deburring drift 2 is lubricated.
If constantly as one man with high pressure lubricating fluid is supplied with in metal die with perforation, the smear metal that is produced when cutting off metallic plate is by being washed away between the coincidence part of pierce punch 1 and deburring drift 2 by the lubricating fluid of force feed.Thus, can prevent smear metal attached in the metal die, just pierce punch 1 and former cause burn just between the deburring drift 2 to prevent it to enter formpiston.
As mentioned above, the tributary circuit 35 of present embodiment is constituting the position opening of the minor diameter part of lubricated liquid pool 10 near pierce punch 1 front-end edge 15a.Just, lubricated liquid pool 10 forms according to the mode that the distance at the peristome 35a of tributary circuit 35 and pierce punch 1 front-end edge 15a partly diminishes.Thereby, in peristome 35a, to compare with flowing to the part of forming by the minor diameter part of lubricated liquid pool 10, ora terminalis 15a one side is mobile forward easily for lubricating fluid.
As shown in Figure 2, the end away from pierce punch 1 front-end edge 15a (minor diameter part upper end) of forming the minor diameter part of lubricated liquid pool 10 forms according to the mode above leaning on slightly than the front-end edge 26a of deburring drift 2 when metal die is chimeric, the lubricating fluid that flows out from tributary circuit 35 not only flows to pierce punch 1 front-end edge 15a one side from lubricated liquid pool 10, also between the coincidence part inner peripheral surface 24a by lubricated liquid pool 10 and deburring drift 2, flow out to deburring drift 2 outsides from leading section (last ora terminalis) 26a of deburring drift 2.Thereby, the lubricated simultaneously and cooling in the interior outside of deburring drift leading section.At this moment, when the water system lubricating fluid that makes water or comprise big water gaging during as lubricating fluid, owing to compare with the lubricating fluid of grease system, the specific heat of lubricating fluid is big, so can obtain higher cooling effect.
And the upper end of forming the minor diameter part of lubricated liquid pool 10 preferably is in not and processing object metallic plate position contacting just, at this moment because if contact with metallic plate, then may become the reason of the unwanted poisonous metal powder of generation.
And as shown in Figure 2, the leading section 15 of pierce punch 1 and the coincidence part inner peripheral surface 24a sliding-contact of deburring drift 2 still, cave in respect to outer peripheral face owing to lubricate liquid pool 10 parts, so do not contact with coincidence part inner peripheral surface 24a.Just the mutual friction area of formpiston and former reduces, and can reduce unnecessary friction.Thereby, the generation of containment frictional heat.
Use the metal die for pressure processing and the water system lubricating fluid of this embodiment 1, carry out about 100,000 punchings with the speed of per minute 200~210 strokes (stroke), fatal breakage does not appear in metal die, only finds wearing and tearing at the leading section of formpiston and former.Compare with using hydrocarbon system pressure processing oil condition, the wearing and tearing of this metal die are very little.SEM photo to the shooting of the metal die state behind 100,000 strokes shows in Fig. 4 (a) and 4 (b).At this moment, Fig. 4 (a) is corresponding with Figure 13 (a) and 13 (b) respectively with 4 (b).Compare with the same SEM photo of the former metal die of Figure 13, can know that lubricity obtains very big improvement.
And, can carry out always or intermittently carry out to metal die for pressure processing supply lubricating fluid from jar.When the intermittent entry lubricating fluid,, can as one man control the supply of lubricating fluid with the motion of forcing press turning cylinder by using rotating cam and encoder etc.For example when the patrix top dead centre be 0 when spending, can control, during each position of rotation through 175 degree~185 degree that comprise lower dead center (180 degree), supply with lubricating fluid to metal die (lubricated liquid pool).
(embodiment 2)
Hereinafter with reference Fig. 5 introduces embodiments of the present invention different from the embodiment described above.Fig. 5 shows metal die for pressure processing of the present invention is applicable to punching, the deburring part amplification longitudinal section of the embodiment 2 of metal mould device.
The difference of the metal die for pressure processing of this metal die for pressure processing and embodiment 1 only is not form lubricated liquid pool on the coincidence part outer peripheral face of pierce punch, lubricate liquid pool and on the coincidence part inner peripheral surface of deburring drift, form, thereby, with components identical among identical symbolic representation Fig. 1 and Fig. 5, omit detailed introduction to them.
With reference to figure 5, on the inner peripheral surface 24 of deburring drift 2, form lubricated liquid pool 10.By the large-diameter portion with internal diameter bigger than the internal diameter of the front-end edge 26a of deburring drift 2 is set, form lubricated liquid pool 10 on the coincidence part inner peripheral surface 24a of deburring drift 2.
On the other hand, pierce punch 1 shown in Figure 5 has in from edge below the base portion 17 to the scope of pierce punch 1 front-end edge 15a and the identical external diameter of front-end edge 15a external diameter.In the inside of pierce punch 1, form the lubricating fluid path of forming by axial passageway 33 and tributary circuit 35 31.In axial passageway 33 and tributary circuit 35 intersection, the mobile impact walls 37 that changes to radially with a part of lubricating fluid is set.
Lubricating fluid collides by axial passageway in the pierce punch 1 33 and impact walls 37, and the peristome 35a at pierce punch outer peripheral face 13 flows out from tributary circuit 35.Thereby when pierce punch 1 and deburring drift 2 were chimeric, the lubricating fluid that flows out from tributary circuit 35 supplied to the lubricated liquid pool 10 of deburring drift 2 and temporarily is stored in the lubricated liquid pool 10.At this moment, if the Surface Machining also more coarse than other surface portion of deburring drift 2 carried out on the surface of lubricated liquid pool 10, then, keep lubricating fluid well by the surface tension of lubricating fluid.When the receiver hole 28 of the above-mentioned deburring drift 2 of pierce punch 1 turnover, the lubricating fluid that flows out from peristome 35a is lubricated the coincidence part outer peripheral face 13a of pierce punch 1 and the coincidence part inner peripheral surface 24a of deburring drift 2.Therefore, in the metal die for pressure processing of embodiment 2, also can carry out lubricated fully to the part that metal die and machined material need lubricate.
The coincidence part outer peripheral face 13a sliding-contact of the coincidence part inner peripheral surface 24a of deburring drift 2 and pierce punch 1, but because lubricated liquid pool 10 is formed by large-diameter portion, so as shown in Figure 5, do not contact with the coincidence part outer peripheral face 13a of pierce punch 1.Therefore, the friction portion area of metal die dwindles, and can contain unnecessary friction.
(embodiment 3)
Hereinafter with reference Fig. 6 introduces embodiments of the present invention 3.Fig. 6 is in the metal die for pressure processing identical with embodiment of the present invention 1, forms near the local amplification view the pierce punch leading section after the lower edge chamfering of minor diameter part of lubricated liquid pool.Only be in this pierce punch, to form the lower edge chamfering of the minor diameter part of lubricated liquid pool 10 with embodiment 1 difference.Thereby, with identical Reference numeral presentation graphs 1 parts identical, and omitted detailed description to them with Fig. 6.
With reference to figure 6, at the lower edge of the minor diameter part of the lubricated liquid pool 10 that constitutes pierce punch 1, it is the chamfered part 51 of circular arc that section is set.Thereby the lubricating fluid that supplies to lubricated liquid pool 10 by lubricating fluid path 31 is flowed downward easily by chamfered part 51, easily leading section 15 is lubricated.If chamfered part 51 is set, then reduce with deburring drift inner peripheral surface contact portion, and, when pierce punch 1 is extracted, can prevent that pierce punch 1 from blocking from deburring drift 2.
And in embodiment 3, chamfered part 51 is formed section circular arc, but also can form taper.And chamfered part 51 can not only be arranged on the lower edge of lubricated liquid pool, also can be arranged on the whole periphery of lubricated liquid pool, also can only be arranged on the part of lubricated liquid pool periphery.
(embodiment 4)
Hereinafter, Fig. 7 has shown and has been arranged on the formpiston different shape of the lubricated liquid pool on the pierce punch just.Be arranged on lubricated liquid pool on the formpiston and be arranged on the formpiston coincidence part outer peripheral face any one form in tapered portion, recess, step and the groove at least a portion or the combination of above-mentioned these shapes.Thereby, shape as lubricated liquid pool, can adapt with required lubricated degree, the intensity of metal die or the design of decompressor etc. of metal die, select to be arranged on tapered portion, recess, step and groove on the formpiston coincidence part outer peripheral face or their combination.And these tapered portion, recess, step and groove etc. can be arranged on the formpiston coincidence part outer peripheral face at least a portion, also can be arranged on the whole formpiston coincidence part outer peripheral face.
Fig. 7 (a) shows the example that the leading section 15 of pierce punch 1 is provided with lubricated liquid pool 10 as tapered portion.Fig. 7 (b) is presented at the example of several oval-shaped recesses as lubricated liquid pool 10 is set on the outer peripheral face of pierce punch 1.And, also can use the peristome of tributary circuit as the recess that constitutes lubricated liquid pool 10.Fig. 7 (c) is presented at the example that on the part of distance front-end edge 15a predetermined distance step is set on the pierce punch 1 and forms lubricated liquid pool 10.Fig. 7 (d) be presented on the pierce punch 1 by along with the direction of its front-end edge level on several translots of being provided with or helicla flute and form the example of lubricated liquid pool 10.And Fig. 7 (e) is presented on the pierce punch 1 example that several pods that extend upward vertically from the part of distance front end predetermined distance is set and forms lubricated liquid pool 10.In this example, can supply with lubricating fluid, utilize pod to supply with lubricating fluid to the following quadrate part of pod from upper portion to the upper portion of pod.And, though in Fig. 7, shown the example that just forms lubricated liquid pool 10 at formpiston on the pierce punch 1, also the lubricated liquid pool of such different shape can be arranged on the coincidence part inner peripheral surface of former with different shape.
And in Fig. 7, though put down in writing lubricating fluid path 31 is not arranged on the pierce punch 1, identical with the embodiment of front, can be with the lubricating fluid channel setting on the pierce punch 1 or on the deburring drift 2.
If can be like this form lubricated liquid pool 10 with various shapes, then can with the shape of the required selections adaptably such as degree of lubrication, the intensity of metal die or the design of decompressor of metal die for pressure processing with the lubricated liquid pool of formpiston or former adaptation.
(embodiment 5)
Hereinafter, the example of metal die for pressure processing that in Fig. 8~10, shows the lubricating fluid path of the supply lubricating fluid be provided with various forms.
With reference to figure 8, be provided with the lubricating fluid path 62 that formation can penetrate the injection road of lubricating fluid to the lubricated liquid pool 10 of pierce punch 1 in the inside of stripper plate 4.Base portion towards stripper plate 4 tiltedly down extends lubricating fluid path 62 from the top of stripper plate 4 and relative face 64 deburring drift 2.
In metal die for pressure processing shown in Figure 8, when the lubricating fluid that sprays in the moment that is fit to from lubricating fluid path 62 is lubricated the leading section 15 of pierce punch 1, be temporarily stored in lubricated liquid pool 10, fully guarantee lubricating fluid necessary in the pressure processing.
Fig. 9 is presented at the example that is provided with the metal die for pressure processing of lubricating fluid path 61 in the former edge ring 3.According to Fig. 9, lubricating fluid path 61 obliquely extends to deburring acceptance division 46 from the base portion of former edge ring 3, in 46 upper sheds of deburring acceptance division.The lubricating fluid that penetrates from this lubricating fluid path 61 disperses at lubricated liquid pool 10 and the leading section 15 of pierce punch 1 or the leading section of deburring drift 2, and they are lubricated.And lubricating fluid is trapped in the lubricated liquid pool 10, thereby guarantees the necessary lubricating fluid of pressure processing.
Figure 10 is presented at former and just is provided with the example of the metal die for pressure processing of lubricating fluid path 72 in the inside of deburring drift 2.In Figure 10, lubricated liquid pool 10 is arranged on the former, and lubricating fluid path 72 extends communicatively from the base portion and the lubricated liquid pool 10 of deburring drift 2.Thus, can directly supply with lubricating fluid to lubricated liquid pool 10.
Lubricating fluid path 72 is being arranged on former just on the deburring drift 2, will lubricating liquid pool 10 and be arranged on formpiston just on the pierce punch 1 time, lubricating fluid path 72 extends and forms in the 24a upper shed of coincidence part inner peripheral surface towards coincidence part inner peripheral surface 24a.
Thus when the inner peripheral surface to the deburring drift carries out sufficient lubrication, when pierce punch 1 and deburring drift 2 were chimeric, lubricating fluid supplied in the lubricated liquid pool 10 of pierce punch 1.And can supply with to the lubricated liquid pool 10 of pierce punch 1 from lubricating fluid path 72 jet lubrication liquid.By the injection of lubricating fluid, and lubricating fluid is supplied with and is stored in when lubricating in the liquid pool 10, can supply with lubricating fluid to the leading section of pierce punch 1.
In the example of Fig. 8 and 9, just form lubricated liquid pool 10 on the pierce punch 1 at formpiston, but also can on former, form lubricated liquid pool, form the lubricating fluid path shown in Fig. 8 and 9.And, in the example of Fig. 8~10,, also can use the lubricating fluid path shown in Fig. 8~10 simultaneously and at the formpiston lubricating fluid path of setting on the pierce punch 1 just though just on the pierce punch 1 the lubricating fluid path is not set at formpiston.And can be by the pierce punch 1 in various pierce punches shown in Figure 71 pie graph 8~10.
Though in above-mentioned embodiment 1~5, do not illustrate, on lubricant application device from the lubricating fluid path to lubricated liquid pool that supply with lubricating fluid by, for example have force feed devices such as gear pump.This lubricant application device can compatibly be arranged on forcing press inside or the element around it.
In the above-described embodiment, though the metal die of only having introduced pierce punch etc. is by the superhard alloy manufacturing, as this superhard alloy, can use to comprise tungsten carbide (WC) or titanium carbide hard carbide particles such as (TiC), with cobalt (Co) or nickel iron group metals such as (Ni) as material in conjunction with the phase metal.
And the soluble oil as above-mentioned explanation is put down in writing can use organic phosphorus compound or metal salt of organic carboxylic acid.
And in the water system lubricating fluid, preferably comprise the metal inert agents that is used for being contained in the superhard alloy that metal die uses in conjunction with the stripping in lubricating fluid of phase metal.At this moment because it can contain the corrosion that causes in conjunction with the stripping of phase metal by superhard alloy.
Metal die for pressure processing of the present invention and pressure processing method are applicable to the occasion of being carried out punching and cut-out by the shearing force of formpiston and former on the processing object material.

Claims (11)

1. metal die for pressure processing, have chimeric formpiston and former mutually, by above-mentioned formpiston and former material is cut off, it is characterized in that: on the coincidence part outer peripheral face of the above-mentioned formpiston that when above-mentioned formpiston and former are chimeric, overlaps or the coincidence part inner peripheral surface of above-mentioned former, be formed with all or part of of the lubricated liquid pool of at least temporarily storing lubricating fluid.
2. metal die for pressure processing as claimed in claim 1 is characterized in that: as above-mentioned lubricated liquid pool, at least a portion of the coincidence part outer peripheral face of above-mentioned formpiston or the coincidence part inner peripheral surface of above-mentioned former is provided with recess.
3. metal die for pressure processing as claimed in claim 1 is characterized in that: above-mentioned lubricated liquid pool forms by the minor diameter part with external diameter also littler than the external diameter of above-mentioned formpiston front end is set on the coincidence part outer peripheral face of above-mentioned formpiston.
4. metal die for pressure processing as claimed in claim 1 is characterized in that: supply with the lubricating fluid channel setting of lubricating fluid on above-mentioned formpiston or above-mentioned former to above-mentioned lubricating fluid pond.
5. metal die for pressure processing as claimed in claim 4 is characterized in that: above-mentioned lubricating fluid path begins to be arranged in above-mentioned formpiston inside from the base portion of above-mentioned formpiston, is communicated with above-mentioned lubricated liquid pool on being formed on above-mentioned formpiston coincidence part outer peripheral face.
6. metal die for pressure processing as claimed in claim 4; it is characterized in that: above-mentioned lubricating fluid path is communicated with by the axial passageway that begins to wear vertically from above-mentioned formpiston base portion and with above-mentioned axial passageway and forms at the tributary circuit of interior direction extension along comprising above-mentioned formpiston radial direction composition; at the branching portion of above-mentioned tributary circuit from above-mentioned axial passageway branch, be provided with the flow direction that makes lubricating fluid from above-mentioned formpiston axially to comprising the impact walls that the radial direction composition changes in interior direction.
7. metal die for pressure processing as claimed in claim 1 is characterized in that: above-mentioned lubricated liquid pool forms by the large-diameter portion with internal diameter also bigger than the internal diameter of above-mentioned former opening ora terminalis is set on the coincidence part inner peripheral surface of above-mentioned former.
8. metal die for pressure processing as claimed in claim 1 is characterized in that: at least a portion chamfering of the periphery of above-mentioned lubricated liquid pool.
9. metal die for pressure processing as claimed in claim 1 is characterized in that: above-mentioned lubricated liquid pool forms according to the mode that the front end of above-mentioned lubricated liquid pool and above-mentioned formpiston or the distance part between above-mentioned lubricated liquid pool and the above-mentioned former opening ora terminalis diminish.
10. metal die for pressure processing as claimed in claim 1 is characterized in that: as lubricating fluid, supply with water or make soluble oil be dissolved in water system lubricating fluid in the water to above-mentioned lubricating fluid pond.
11. pressure processing method, use the described metal die for pressure processing of claim 1 that material is cut off, it is characterized in that, comprise following operation: during beginning till the equal state next time from above-mentioned formpiston and the chimeric state of above-mentioned former, on all or part of is formed on the coincidence part inner peripheral surface of the coincidence part outer peripheral face of the above-mentioned formpiston that above-mentioned formpiston and above-mentioned former overlap when chimeric or above-mentioned former, at least temporarily the lubricated liquid pool of storing lubricating fluid is supplied with above-mentioned lubricating fluid.
CNB200410088222XA 2003-10-22 2004-10-21 Metal die for press working and press working method Expired - Fee Related CN100384562C (en)

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JP2003361970A JP4526799B2 (en) 2003-10-22 2003-10-22 Die for press working and press working method

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CN110394395A (en) * 2019-07-19 2019-11-01 佛山以卓智能装备制造有限公司 A kind of formed punch

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TWI313197B (en) 2009-08-11
KR20050039598A (en) 2005-04-29
KR101103895B1 (en) 2012-01-12
CN100384562C (en) 2008-04-30
MY140108A (en) 2009-11-30
JP2005125347A (en) 2005-05-19
TW200529947A (en) 2005-09-16

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