WO2018101256A1 - Matrice et son procédé de fabrication - Google Patents

Matrice et son procédé de fabrication Download PDF

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Publication number
WO2018101256A1
WO2018101256A1 PCT/JP2017/042611 JP2017042611W WO2018101256A1 WO 2018101256 A1 WO2018101256 A1 WO 2018101256A1 JP 2017042611 W JP2017042611 W JP 2017042611W WO 2018101256 A1 WO2018101256 A1 WO 2018101256A1
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WIPO (PCT)
Prior art keywords
base portion
mold
shaping
cavity
powder
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PCT/JP2017/042611
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English (en)
Japanese (ja)
Inventor
吉田　徳雄
田中　健一
阿部　諭
内野々　良幸
Original Assignee
パナソニックＩｐマネジメント株式会社
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Priority to JP2018554157A priority Critical patent/JP6785478B2/ja
Publication of WO2018101256A1 publication Critical patent/WO2018101256A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/06—Permanent moulds for shaped castings
    • 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
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing

Definitions

  • the present invention relates to a mold and a method of manufacturing the same. More particularly, the present invention relates to a mold comprising a shaped part and a shaped base part joined to the shaped part, and a method of manufacturing the same.
  • molding technology using molds Such molding techniques include, for example, pressure molding and injection molding. In these molding methods, molded articles are finally obtained from the molding material to be provided in the cavity in the mold.
  • Such a mold can be manufactured using a method of sequentially forming a plurality of solidified layers by light beam irradiation.
  • Such methods include, for example, the "powder bed melt bonding method".
  • "Powder bed melt bonding” is a method of producing a three-dimensional shaped object that is used as a mold or as a component of a mold by irradiating a powder material with a light beam. In this method, powder layer formation and solidified layer formation are alternately repeated based on the following steps (i) and (ii) to produce a three-dimensional shaped object.
  • the resulting three-dimensional shaped object can be used as a mold.
  • the squeegee blade 23 is moved to a predetermined thickness on the shaping base portion 21
  • the powder layer 22 is formed (see FIG. 11A).
  • a predetermined portion of the powder layer 22 is irradiated with the light beam L to form a solidified layer 24 from the powder layer 22 (see FIG. 11B).
  • a new powder layer is formed on the obtained solidified layer, and the light beam is irradiated again to form a new solidified layer.
  • the solidified layer 24 is laminated (see FIG.
  • the three-dimensional structure of the laminated solidified layer 24 is obtained.
  • a shaped object can be obtained. Since the solidified layer 24 formed as the lowermost layer is in a state of being bonded to the shaping base portion 21, the three-dimensional shaped object and the shaping base portion 21 form an integral body, and the integral body is used as a mold it can.
  • the present inventors have found that the following problems may occur when using an integrated product of the three-dimensional shaped object 100 'and the shaping base portion 21' as the mold 200 '(see FIG. 14).
  • the shape etc. of the three-dimensional shaped object 100 'finally obtained can be freely
  • the surface 100a 'of the three-dimensional shaped object 100' may generally be used as the cavity forming surface 200a 'of the mold 200'.
  • pores 50 ′ having a plurality of fine dimensions may be generated on the surface 100 a ′ of the three-dimensional shaped object 100 ′. Therefore, when using the surface 100a 'of the three-dimensional shaped object 100' where such a pore 50 'can occur as the cavity forming surface 200a' of the mold 200 ', a molded article finally obtained due to the generation of the pore 50'. There is a possibility that the transfer accuracy of the cavity forming surface 200a 'with respect to this may be reduced.
  • an object of the present invention is to provide a mold capable of avoiding a decrease in transfer accuracy of the cavity forming surface 200 a ′ with respect to a finally obtained molded product, and a method of manufacturing the same.
  • a mold comprising a shaped part and a shaped base joined to the shaped part, wherein A mold is provided, wherein the shaped base portion has a cavity forming surface.
  • a method of manufacturing a mold Forming a shaped portion by sequentially forming a plurality of solidified layers on the shaping base portion by light beam irradiation; Providing a cavity forming surface on the shaping base portion.
  • Sectional drawing which showed typically the technical idea of the manufacturing method of the metal mold
  • Sectional drawing which showed typically the manufacturing method of the metal mold
  • Sectional view schematically showing a method of manufacturing a mold according to another embodiment of the present invention Sectional drawing which showed typically the manufacturing method of the metal mold
  • Sectional drawing which showed typically the manufacturing method of the metal mold
  • the perspective view which showed the structure of the optical shaping compound processing machine typically Flow chart showing the general operation of the stereolithography compound processing machine
  • a three-dimensional shaped object to be used as a mold or a component of a mold by utilizing a method of sequentially forming a plurality of solidified layers by light beam irradiation.
  • Such methods include the "powder bed fusion bonding method” and the “LMD (Laser Metal Deposition) method".
  • Powder bed fusion bonding method The powder bed fusion bonding method is described below.
  • an optical shaping composite processing in which a cutting process of a three-dimensional shaped object is additionally performed will be exemplified.
  • FIG. 11 schematically shows the process aspect of the optical shaping composite processing
  • FIGS. 12 and 13 are flowcharts of the main configuration and operation of the optical shaping composite processing machine capable of performing the powder bed fusion bonding method and the cutting process. Respectively.
  • the optical shaping combined processing machine 1 is provided with a powder layer forming means 2, a light beam irradiating means 3 and a cutting means 4 as shown in FIG.
  • the powder layer forming means 2 is a means for forming a powder layer by laying a powder such as a metal powder or a resin powder with a predetermined thickness.
  • the light beam irradiation means 3 is a means for irradiating the light beam L to a predetermined portion of the powder layer.
  • the cutting means 4 is a means for shaving the surface of the laminated solidified layer, that is, the surface of the three-dimensional shaped object.
  • the powder layer forming means 2 mainly comprises a powder table 25, a squeezing blade 23, a shaping table 20 and a shaping base portion 21 as shown in FIG.
  • the powder table 25 is a table which can move up and down in the powder material tank 28 whose outer periphery is surrounded by the wall 26.
  • the squeezing blade 23 is a blade that can be moved horizontally to provide the powder 19 on the powder table 25 onto the shaping table 20 to obtain the powder layer 22.
  • the modeling table 20 is a table that can be moved up and down in the modeling tank 29 whose outer periphery is surrounded by the wall 27.
  • the modeling base part 21 is distribute
  • the light beam irradiating means 3 mainly comprises a light beam oscillator 30 and a galvano mirror 31 as shown in FIG.
  • the light beam oscillator 30 is a device that emits a light beam L.
  • the galvano mirror 31 is a means for scanning the emitted light beam L onto the powder layer 22, that is, a means for scanning the light beam L.
  • the cutting means 4 mainly comprises an end mill 40 and a drive mechanism 41, as shown in FIG.
  • the end mill 40 is a cutting tool for shaving the surface of the laminated solidified layer, that is, the surface of the three-dimensional shaped object.
  • the drive mechanism 41 is a means for moving the end mill 40 to a desired cutting position.
  • the operation of the optical forming combined processing machine 1 is composed of a powder layer forming step (S1), a solidified layer forming step (S2) and a cutting step (S3) as shown in the flowchart of FIG.
  • the powder layer forming step (S1) is a step for forming the powder layer 22.
  • the shaping table 20 is lowered by ⁇ t (S11) so that the level difference between the upper surface of the shaping base portion 21 and the upper end surface of the shaping tank 29 becomes ⁇ t.
  • the squeezing blade 23 is moved horizontally from the powder material tank 28 toward the shaping tank 29, as shown in FIG.
  • the solidified layer forming step (S2) is a step of forming the solidified layer 24 by light beam irradiation.
  • the light beam L is emitted from the light beam oscillator 30 (S21), and the light beam L is scanned to a predetermined place on the powder layer 22 by the galvano mirror 31 (S22). Thereby, the powder of the predetermined part of the powder layer 22 is sintered or melted and solidified to form a solidified layer 24 as shown in FIG. 11B (S23).
  • a carbon dioxide gas laser, an Nd: YAG laser, a fiber laser or ultraviolet light may be used as the light beam L.
  • the powder layer forming step (S1) and the solidified layer forming step (S2) are alternately repeated. Thereby, as shown in FIG. 11C, a plurality of solidified layers 24 are laminated.
  • the cutting step (S3) is a step for scraping the surface of the laminated solidified layer 24, ie, the surface of the three-dimensional shaped object.
  • the cutting step is started by driving the end mill 40 (see FIGS. 11 (c) and 12) (S31). For example, when the end mill 40 has an effective blade length of 3 mm, a cutting process of 3 mm can be performed along the height direction of the three-dimensional shaped object, so if ⁇ t is 0.05 mm, 60 layers When the solidified layer 24 is laminated, the end mill 40 is driven.
  • the surface of the laminated solidified layer 24 is subjected to a cutting process (S32).
  • a cutting process S32
  • the three-dimensional shaped object of since the solidified layer 24 formed as the lowermost layer is in a state of being bonded to the shaping base portion 21, the three-dimensional shaped object and the shaping base portion 21 form an integral body, and the integral body is used as a mold. It can be used as
  • the “LMD method” is a method of forming a solidified layer by substantially simultaneously supplying a raw material and irradiating a light beam on a modeling base. Compared to the above-described powder bed melt bonding method, the LMD method is characterized in that the step of forming a powder layer is not included in obtaining a solidified layer.
  • a powder or a filler may be used as a raw material used in the LMD method. That is, in the LMD method, the raw material supply portion is irradiated with the light beam, and the powder or the filler material as the raw material is supplied to form a solidified layer from the supplied powder or the filler material.
  • the type of powder may be the same as the type of powder used in the powder bed melt bonding process.
  • the filler material refers to the welding material, and refers to one that can melt when irradiated with a light beam.
  • the material of the filler is not particularly limited, but may be metal.
  • the shape of the filler is not particularly limited, but from the viewpoint of the ease of supply of the filler as a raw material to the raw material supply location to which the light beam is irradiated, the wire shape or rod shape is elongated The shape is preferred.
  • the supplied powder is sintered or solidified by light beam irradiation to form a solidified layer directly from the powder.
  • the powder is spray-supplied to the irradiated portion of the light beam to sinter or solidify the powder to form a solidified layer.
  • the filler material when a filler material is used as the raw material, the filler material is supplied to the irradiated part of the light beam, a part of the filler material is melted by the light beam, and a part of the filler material is melted thereby. Form a solidified layer.
  • the process proceeds to a cutting step, and finally, a three-dimensional shaped object having a desired shape comprising the solidified layer laminated is obtained.
  • the solidified layer formed as the lowermost layer is in a state of being bonded to the shaping base portion, the three-dimensional shaped object and the shaping base portion form an integral product, and the integrated component can be used as a mold. .
  • the inventors of the present invention can produce pores 50 'on the surface 100a' when the surface 100a 'of the three-dimensional shaped object 100' is used as the cavity forming surface 200a 'of the mold 200' as shown in FIG. It has been found that there is a possibility that the transfer accuracy of the cavity forming surface 200a 'with respect to the finally obtained molded product may be reduced due to the above. Therefore, the inventors of the present invention have studied earnestly in order to solve such technical problems, and came to devise a method of manufacturing a mold according to an embodiment of the present invention.
  • An embodiment of the present invention differs from the previous embodiments in which the surface of a three-dimensional shaped object obtained by a method of sequentially forming a plurality of solidified layers by light beam irradiation is used as a cavity forming surface of a mold. It has a feature in that it corresponds to
  • a three-dimensional shaped object formed by a method of sequentially forming a plurality of solidified layers by irradiation with a light beam, and a forming base portion joined to the three-dimensional shaped object
  • the present invention is characterized in that the shaping base portion is effectively used.
  • the “shaped portion” as referred to in the present specification refers to a method of sequentially forming a plurality of solidified layers by irradiation with a light beam, for example, those obtained by a powder bed fusion bonding method and / or an LMD method.
  • the “three-dimensional shaped object” in The “fabrication base portion” as referred to in the present specification means, in a broad sense, a base (base) for forming (fabrication) a molding portion.
  • the “shaped base portion” referred to in the present specification is not the above-described powder bed melt bonding method and / or LMD method, but a metal melt obtained by pouring a molten metal material into a mold having a predetermined shape, for example.
  • the term “cavity” refers to a space area (cavity) formed when the movable mold on one side and the stationary mold on the other side are mold-aligned.
  • the term “cavity forming surface” as used herein refers to a surface that forms a space area (cavity) formed during mold alignment of one movable mold and the other fixed mold.
  • the manufacturing method of the die 200A according to an embodiment of the present invention is characterized in that provision of the cavity forming surface 21A 11 into a shaped base portion 21A.
  • a feature is a point that is significantly different from the conventional aspect in which the surface of the three-dimensional shaped object is used as the cavity forming surface of the mold.
  • the overall shape of the shaping base portion 21A is not particularly limited as long as the shaping portion 100A can be formed on the shaping base portion 21A and the cavity forming surface 21A 11 can be provided to the shaping base portion 21A. . If an example is given, modeling base part 21A can take forms, such as rectangular parallelepiped shape and a cylindrical shape.
  • the surface (principal surface) of the shaping base portion 21A preferably has a planar shape.
  • the thickness of the shaping base portion 21A preferably has a cavity forming surface 21A 11 suitably formable thickness having a desired shape and dimensions.
  • the third, cavity forming surface 21A 11 to be subjected to the shaping base portion 21A preferably has a hardness achievable structural strength to withstand the forces exerted on the forming surface during molding.
  • the shaping base portion 21A be made of an iron-based material having relatively high rigidity.
  • the present invention because it forms a cavity forming surface 21A 11 into a shaped base portion 21A side, need not necessarily be used in the formation of the shaped portion 100A rigidity is relatively high iron-based powder. Therefore, as the metal powder for forming the shaped part 100A, it is possible to use a powder mainly composed of a copper-based powder and / or an aluminum-based powder having relatively high thermal conductivity. Details will be described later.
  • the cavity formation surface is not formed on the surface 100A 1 of the shaped portion 100A side of the mold 200A.
  • a method of sequentially forming a plurality of solidified layers 24A by irradiation with a light beam L, for example, the surface of a shaped part 100A (corresponding to a three-dimensional shaped object 100 'in the conventional embodiment (see FIG. 14)) obtained by powder bed fusion bonding method May have pores.
  • the cavity forming surface 21A 11 (a mold which is finally obtained in the shaping base portion 21A in which such pores can not occur, not the surface 100A 1 on the side of the shaped portion 100A where such pores can occur corresponds to the code 200A 1 in 200A) can be formed.
  • the molding material can be suitably filled in the cavity formed by the cavity forming surface 200A 1 because the pore can not occur. It can be done.
  • a suitable molding material into such cavity, it is possible to avoid the deterioration of the transfer accuracy of the cavity forming surface 200A 1 for finally obtained molded article. In other words, it is possible to improve the transfer accuracy of the cavity forming surface 200A 1 for finally obtained molded article.
  • the manufacturing method according to an embodiment of the present invention preferably adopts the following aspect.
  • the bottom of a forming base refers to the bottom of a base for forming (forming) a forming part in a broad sense, and in the narrow sense, the bottom of a forming base that is a base for forming a forming part Point to
  • the “bottom surface” refers to the lower surface or the base surface of a base (modeling base portion) for forming the modeling portion.
  • the formation base portion 21A is to be a base for forming the formation portion 100A. Therefore, the surface from the viewpoint of reducing the aspect and mold 200A overall dimensions size forming such shaped portion 100A in a stable condition, the main surface 21A 1 of the shaping base portion 21A, including a generally shaped base bottom 21A 12 It can be an area. More specifically, in a cross-sectional view, a width dimension of the main surface 21A 1 of the shaping base portion 21A comprising a shaped base bottom 21A 12 is relatively larger than the height of the side surface 21A 3 of the shaping base portion 21A obtain.
  • the cavity forming surface 21A 11 is formed on the side of the base 21A 12 of the shaping base portion 21A in consideration of this point, the following effects can be exhibited. Specifically, due to the width of the main surface 21A 1 of the shaping base portion 21A comprising a shaped base bottom 21A 12 is relatively large, with may be formed a shaped portion 100A in a stable condition, a cavity formed It may be able to improve the degree of freedom of the size of the face 21A 11. Incidentally, the formation of the shaped portion 100A of a stable state, in terms of both the improvement in dimensional freedom of the cavity forming surface 21A 11, the cavity forming surface 21A 11 in a cross-sectional view, shaped base bottom as shown in FIG. 1 21A 12 is more preferable. That is, the cavity forming surface 21A 11 viewed in cross section, it is more preferable to position so as to be continuous between one of the shaped base bottom 21A 12 and the other of the shaped base bottom 21A 12.
  • the manufacturing method according to an embodiment of the present invention may adopt the following aspect (see FIG. 2).
  • the cavity forming surface 21B 11 into a shaped base portion 21B.
  • a method is not particularly limited, but the main surface 21B 1 of the shaping base portion 21B (for example, the lower main surface including the shaping base bottom surface 21B 12 ) is cut using a rotary cutting tool such as an end mill.
  • the cavity forming surface 21B 11 may be formed.
  • rotary cutting tool as used herein means a tool that is rotationally driven and used in the cutting process. Examples of specific rotary cutting tools include end mills such as flat end mills and ball end mills. In a preferred embodiment, the cutting process is performed using a flat end mill as the rotary cutting tool.
  • An alloy coating (for example, AlTiN coating) may be provided on the surface of the rotary cutting tool to improve heat resistance.
  • the cutting process is suitable for forming a relatively simple shaped surface.
  • the cavity forming surface 21B 11 that can be formed by performing cutting processing has, for example, a rectangular, square, triangular, semicircular, or semielliptical shape in cross sectional view (as an example, It may be configured to have a lens shape shown in 2 (b).
  • a plurality of solidified layers 24B by the irradiation of the light beam L at the shaping base portion 21B having a cavity forming surface 21B 11 as shown in FIG. 2 (c) are sequentially formed to form a shaped part 100B.
  • FIG. 2 (d) in one embodiment of the present invention provided with a forming base portion 21B in which the cavity forming surface 21B 11 is formed, and a forming portion 100B formed on the forming base portion 21B.
  • the mold 200B is obtained.
  • the manufacturing method according to an embodiment of the present invention may adopt the following aspect (see FIG. 3).
  • the shaped portion 100C is formed by sequentially forming a plurality of solidified layers 24C on the shaped base portion 21C by irradiation with the light beam L. .
  • the cavity forming surface 21C 11 is provided on the shaped base portion 21C.
  • a rotary cutting tool such as an end mill
  • FIG. 3 (c) according to an embodiment of the present invention comprising a shaped base portion 21C and the shaped portion 100C formed on the shaping base portion 21C, the cavity forming surface 21C 11 is formed A mold 200C is obtained.
  • the manufacturing method according to an embodiment of the present invention may adopt the following aspect.
  • a mold having a fluid passage eg, a temperature control medium passage
  • a fluid passage eg, a temperature control medium passage
  • FIG. 4 a fluid passage
  • fluid passage refers broadly to a passage for fluid flow, and in a narrow sense, to a fluid corresponding to, for example, a temperature control medium route for flowing a temperature control medium.
  • temperature control medium refers to the medium for providing a heating energy or cooling thermal energy with respect to the molding material in the cavity mentioned later.
  • modeling base part 21D is provided on modeling table 20D.
  • fixing means such as a screw member.
  • After installing the shaping base portion 21D it is subjected to cutting to form a cavity forming surface 21D 11 using an end mill 40D on the main surface 21D 1 of the shaping base portion 21D.
  • polishing may be further performed using a polishing tool 42D or the like.
  • shaping base portion 21D After forming the cavity forming surface 21D 11 on the main surface 21D 1 of shaping base portion 21D, such shaping base portion 21D is upside down. Under the present circumstances, it is preferable to remove fixing means, such as a screw member, from a viewpoint of releasing fixation with modeling table 20D and modeling base part 21D. After the shaping base portion 21D is turned upside down, the main surface 21D 1 of the shaping base portion 21D is subjected to cutting with an end mill 40D like the main surface 21D 2 on the opposite side.
  • fixing means such as a screw member
  • the Vickers subjected to cutting on the main surface 21D 2 of the shaping base portion 21D may form a shaping part 100D on the shaping base portion 21D as shown in FIG. 4 (c) and FIG. 4 (d).
  • the step of forming the powder layer 22D using the squeezing blade 23D by the powder bed fusion bonding method, and the step of irradiating the predetermined portion of the powder layer 22D with the light beam L to form the solidified layer 24D are repeated.
  • You may form modeling part 100D on modeling base part 21D.
  • the light beam L is not irradiated to a predetermined portion of the powder layer 22D formed on the cut surface 21D 21 obtained by subjecting the main surface 21D 2 of the formation base portion 21D to the cutting process.
  • a fluid passage 60D is used for example as a temperature control medium passage 60D 1.
  • a mold 200D having a cavity forming surface 21D 11 formed in the shaping base portion 21D and a fluid passage 60D used as a temperature control medium passage inside.
  • the cut surface 21D 21 in addition to the formation of a cavity forming surface 21D 11 against the major surface 21D 1 of shaping base portion 21D, the cut surface 21D 21 by forming a cut surface 21D 21 on the main surface 21D 2 of the shaping base portion 21D It is characterized in that it is at least part of the forming surface of the fluid passage 60D.
  • the filling of a suitable molding material into the cavity due to the inability to form pores in the shaping base part and the molding in the cavity due to the relatively small distance between the cavity forming surface and the forming surface of the fluid passage By the more suitable heating or cooling of the material, the following effects can be achieved. That is, it is possible to more preferably avoid the lowering of the transfer accuracy of the cavity forming surface to the molded product. That is, it is possible to further improve the transfer accuracy of the cavity forming surface to the finally obtained molded product.
  • the step of forming the fluid passage 60D is performed after the step of forming the cavity forming surface 21D 11 is performed.
  • the present invention is not limited to this, and for example, the following embodiment may be adopted.
  • molding was subjected to cutting on a main surface 21E 2 of the base part 21E, for example, by the powder bed fusion bonding method by repeating a step of forming a step of forming a powder layer a solidified layer 24E
  • the forming unit 100E is formed on the forming base unit 21E (see FIG. 5A).
  • the fluid path 60E is formed by removing the non-irradiated portion powder.
  • a cavity forming surface 21E 11 formed on the shaping base unit 21E may produce a die 200E comprising a fluid passage 60E used as the temperature control medium passage 60E 1 therein.
  • the filling of a suitable molding material into the cavity due to the inability of pores to form in the molding base, and the distance between the cavity formation surface and the formation surface of the fluid passage are relative.
  • the following effects can be achieved. That is, it is possible to more preferably avoid the reduction in the transfer accuracy of the cavity forming surface to the finally obtained molded product.
  • fluid passages eg, venting passages
  • fluid passages eg, venting passages
  • FIG. 6 a mold having fluid passages (eg, venting passages) therein may be manufactured (see FIG. 6).
  • fluid passage refers in a broad sense to a passage for fluid flow, and in a narrow sense corresponds to a degassing passage for degassing, for example, gas generated in a cavity as a fluid.
  • the light beam L having a relatively small irradiation energy to the powder 19F in the space area formed by the concave 21F 21.
  • light of relatively small irradiation energy is applied to the powder 19F in the space area so that a low density region (solidification density 0 to 95% (not including 95%)) can be obtained from the filled powder 19F. It is preferable to irradiate the beam L.
  • the shaped portion 100F may be formed on the shaped base portion 21F.
  • the step of forming the powder layer using the squeezing blade 23F by the powder bed fusion bonding method, and the step of irradiating the light beam L to a predetermined portion of the powder layer to form the solidified layer 24F are repeated to form the shape
  • the portion 100F may be formed.
  • a part of the solidified layer 24F to be stacked is formed by the above-described concave surface 21F 21 in a cross-sectional view by irradiating the light beam L of relatively small irradiation energy to a predetermined portion of the powder layer. It is preferable to form continuously in the low density area obtained from the powder 19F filled in the space area.
  • solidification density (%) substantially means solidified cross-sectional density (occupied percentage of solidified material) obtained by image processing a cross-sectional photograph of a three-dimensional shaped object.
  • the image processing software to be used is Scion Image ver. 4.0.2 (freeware manufactured by Scion). After the sectional image is binarized into a solidified portion (white) and a void portion (black), the total number of pixels Px all of the image and the number of pixels Px white of the solidified portion (white) are counted to obtain the following equation
  • the solidified cross-sectional density ⁇ ⁇ ⁇ S can be determined by 1. [Equation 1]
  • the integrated product of the shaping base portion 21F and the shaping portion 100F is further turned upside down so that the shaping portion 100F is positioned above the shaping base portion 21F (FIG. 7C).
  • the mold 200F having the cavity forming surface 21F 11 formed in the shaping base portion 21F and the fluid passage 60F used as the gas vent passage inside.
  • the powder material used in the powder bed fusion bonding method and / or the LMD method to form the shaped part is preferably a metal powder in view of the use as a mold.
  • the metal powder may be, for example, a powder containing copper-based powder and / or aluminum-based powder as a main component.
  • the metal powder at least one selected from the group consisting of nickel powder, nickel-based alloy powder, graphite powder and the like, as needed, for powder mainly composed of copper-based powder and / or aluminum-based powder. It may be a powder further comprising The reason is as follows.
  • the force applied to the cavity forming surface at the time of molding is used for the shaping portion formed by the powder bed fusion bonding method and / or LMD method.
  • the structural strength that can be tolerated can be relatively reduced. Therefore, it is not always necessary to use iron-based powder having relatively high rigidity in forming the shaped part. Therefore, as a metal powder for forming a shaped portion, a copper-based powder having relatively high thermal conductivity and / or from the viewpoint of providing heat energy more suitably to the cavity forming surface side provided in the shaped base portion at the time of shaping Or it is possible to use the powder which made aluminum system powder the main ingredients.
  • the copper-based powder and / or the aluminum-based powder may also have the property of relatively low rigidity. Therefore, the following effects can also be achieved by using a powder based on a copper-based powder and / or an aluminum-based powder having a property of relatively low rigidity. That is, as compared with the case of using a powder having iron-based powder with relatively high rigidity as a main component, it is possible to easily cut the surface of the shaped part obtained due to the relatively low rigidity. It is.
  • the predetermined shape and dimensions of such cavity forming surfaces may need to be relatively large, depending on the shape and dimensions of the desired molded article.
  • the height dimension of the shaping base portion may be made relatively larger than the height dimension of the shaping portion.
  • the mold according to an embodiment of the present invention obtained by the above-described manufacturing method has the following configuration.
  • a mold 200A according to an embodiment of the present invention includes a shaping base portion 21A joined to a shaping portion 100A and a shaping portion 100A, and the shaping base portion 21A is a cavity forming surface 21A 11 It has a feature in that it has That is, the mold 200A according to the embodiment of the present invention is characterized in that the cavity forming surface 21A 11 is provided in the shaping base portion 21A. Such a feature is a point that is significantly different from the conventional aspect in which the surface of the three-dimensional shaped object corresponding to the shaped portion 100A is used as the cavity forming surface of the mold.
  • the cavity forming surface 21A 11 (reference numeral 200A 1 in the mold 200A) is not formed on the shaping base portion 21A where such pores can not occur, not the surface 100A 1 on the side ) Can be formed. If the cavity forming surface 21A 11 is formed in the shaping base portion 21A in which no pore can occur, the molding material can be suitably filled in the cavity formed by the cavity forming surface 200A 1 because the pore can not occur. It can be done. Thus, by the filling of a suitable molding material into such cavity, it is possible to avoid the deterioration of the transfer accuracy of the cavity forming surface 200A 1 for finally obtained molded article. In other words, it is possible to improve the transfer accuracy of the cavity forming surface 200A 1 for finally obtained molded article.
  • a cavity forming surface 200A 1 is the bonding surface 21A 2 side of the shaped portion 100A and the shaping base portion 21A provided on the main surface 21A 1 of the shaping base portion 21A located opposite Is preferred (see FIG. 8).
  • the “bonding surface 21A 2 side between the forming unit 100A and the forming base unit 21A” in the present specification substantially indicates the boundary surface side between the forming unit 100A and the forming base unit 21A.
  • the forming base portion 21A is to be a base (base) for forming the forming portion 100A. Therefore, from the viewpoint of reducing the aspect and mold 200A overall dimensions sized to form a shaped portion 100A in a stable state, in a cross-sectional view, a width dimension of the main surface 21A 1 of the shaping base portion 21A is shaped base portion 21A It may be relatively larger than the height of the side surface 21A 3 of the. Considering this point, the cavity forming surface 21A 11, when the bonding surface 21A 2 of the shaped portion 100A and the shaping base portion 21A is formed on the main surface 21A 1 side of the shaping base portion 21A located opposite, the following An effect can be exhibited. That is, the width dimension of the main surface 21A 1 of the shaping base portion 21A is due to the relatively large, it may be able to improve the degree of freedom of the size of the cavity forming surface 21A 11.
  • the main surface of the shaped base portion 21A it is preferable that the shaped base bottom 21A 12 in addition to the cavity forming surface 21A 11 is further included.
  • the main surface 21A 1 of such shaping base unit 21A includes a joint surface 21A 2 of the shaped portion 100A and the shaping base portion 21A is It can be located on the opposite side. Therefore, the main surface 21A 1 of the shaping base portion 21A, it is necessary to the bottom surface in order to obtain a mold 200A to form the molded portion 100A in a stable condition on a shaping base portion 21A.
  • the shaping base portion main surface 21A 1 of 21A forms a shaped base portion stably shaped base bottom 21A 12 not from the viewpoint of forming a state cavity forming surface 21A 11 only a shaped portion 100A at the 21A Is preferred.
  • the formation of a stable state of the shaped portion 100A from the viewpoint of compatibility between improvement in dimensional freedom of the cavity forming surface 21A 11, the cavity forming surface 21A 11 in a cross-sectional view is shaped base bottom as shown in FIG. 8 and it is more preferably formed so as to sandwich the 21A 12. That is, the cavity forming surface 21A 11 in cross section is more preferably positioned so as to continue between one of the shaped base bottom 21A 12 and the other of the shaped base bottom 21A 12.
  • the mold according to an embodiment of the present invention may adopt the following aspect.
  • a mold according to an embodiment of the present invention may comprise a fluid passage therein.
  • fluid passage refers to a passage for flowing a fluid in a broad sense, and in a narrow sense, a temperature control medium passage for flowing a temperature control medium as a fluid and / or a gas etc. which may occur in a cavity as a fluid Refers to the equivalent of the degassing path for degassing.
  • This aspect is characterized in that a fluid passage is provided inside the mold in addition to the cavity forming surface being formed on the main surface of the above-mentioned molding base portion.
  • a mold 200D may have fluid passages 60D (60D 1 to 60D 3 ) internally used as a temperature control medium passage. As described above, no pore can occur on the surface of the shaping base portion 21D. Therefore, when forming a cavity forming surface 21D 11 on the shaping base portion 21D, may be able due to the pores can not occur favorably fill the molding material into the cavity is shaped by the cavity forming surface.
  • fluid passages 60D (60D 1 to 60D 3 ) are provided inside the mold 200D. Therefore, the cavity forming surface 200D 1 of the mold 200D be subjected to suitable thermal energy of the temperature control medium in the molding material filled in the cavity is shaped by (corresponding to the cavity forming surface 21D 11 above the shaped base portion 21D) It can be done.
  • the fluid passage 60D used as a temperature control medium passage inside the mold 200D By suitable supply of thermal energy of the temperature control medium to the material, The following effects can be achieved. That is, it is possible to more preferably avoid the reduction in the transfer accuracy of the cavity forming surface to the finally obtained molded product. That is, it is possible to further improve the transfer accuracy of the cavity forming surface to the finally obtained molded product.
  • the fluid passage 60D 1 which is used as the temperature control medium channel as shown in FIG. 9 (i) is the interior of both shaping part 100D and the shaping base portion 21D may be provided so as to extend.
  • the fluid passage 60D 1 used as a temperature control medium passage characterized in that is also provided on the shaping base portion 21D side to form a cavity forming surface 200D 1.
  • the fluid passages 60D 1 is also provided on the shaping base portion 21D side. Therefore, may relatively small distance S between the forming surface of the fluid passage 60D 1 which faces the cavity forming surface 200D 1 and the cavity forming surface 200D 1. Due to such a relatively small distance, the heat energy of the temperature control medium may be better provided by the molding material in the cavity. Thus, the filling of a suitable molding material into the cavity due to the pores in the shaped base portion 21D can not occur, the molding was filled into the cavity due to the fluid passage 60D 1 is also provided on the shaping base portion 21D side By the more suitable supply of the thermal energy of the temperature control medium to the material, the following effects can be achieved. That is, it is possible to more preferably avoid the reduction in the transfer accuracy of the cavity forming surface to the finally obtained molded product. That is, it is possible to further improve the transfer accuracy of the cavity forming surface to the finally obtained molded product.
  • the fluid passage 60D 2 used as the temperature control medium channel as shown in FIG. 9 (ii) and Fig. 9 (iii) is, the interior of the shaped portion 100D side only may be provided so as to extend .
  • the fluid passages 60D 2 and 60D 3 are provided only on the shaped part 100D side. Therefore, a molding material can be suitably filled in a cavity by the fact that a pore can not arise in modeling base 21D. Furthermore, the cavity forming surface 200D 1 of the mold 200D be subjected to suitable thermal energy of the temperature control medium in the molding material filled in the cavity is shaped by (corresponding to the cavity forming surface 21D 11 above the shaped base portion 21D) It can be done. In addition to this, in the embodiment shown in FIG.
  • the shaped part 100D is formed by, for example, a powder bed fusion bonding method as described in the section of the manufacturing method of the present invention described above. Therefore, the shapes of the fluid passages 60D 2 and 60D 3 used as the temperature control medium passage can be freely formed according to the use environment of the mold 200D.
  • a fluid passage 60F used as a gas venting path extending in one direction from the cavity forming surface 21F 11 to the upper surface 100F 1 of the shaped part 100F (the surface of the solidified layer 24F of the uppermost layer) is formed It has a feature in
  • fluid passage 60F is formed such that the low-density region (solidified density 0-95% (not including 95%)) in order to function as a gas vent passage 60F 1. Therefore, due to the low density region, voids may exist inside the fluid passage 60F.
  • the presence of such voids, air, etc. that originally present in the gas and / or the cavity resulting from a molding material filled in the cavity is shaped by the cavity forming surface 200F 1 of the mold 200F, preferably outside through the fluid passage 60F Can be extracted.
  • the cavity forming surface 200F 1 of the mold 200F may correspond to the cavity forming surface 21F 11 above the shaped base portion 21F.
  • the cavity forming surface 21F 11 is formed into a shaped base portion 21F. Therefore, may be able to suitably fill the molding material into a shaped base portion due to the pores can not occur in the cavity is shaped by the cavity forming surface 21F 11.
  • the following effects can be achieved by That is, it is possible to more preferably avoid the reduction in the transfer accuracy of the cavity forming surface to the finally obtained molded product. That is, it is possible to further improve the transfer accuracy of the cavity forming surface to the finally obtained molded product.
  • a fluid passage used as a degassing passage may be provided only on the shaped part 100F side.
  • the fluid passage used as the degassing passage extends from the interface region between the shaping base portion 21F and the shaping portion 100F to the upper surface of the shaping portion 100F from the viewpoint of extracting the gas in the cavity to the suitable outside.
  • it is formed in Further, in this case, a part of the cavity forming surface formed in the shaping base portion 21F and the shaping base portion 21F from the viewpoint of suitably extracting the gas in the cavity to the outside through the fluid passage used as the gas venting path. It is preferable to form in the interface area
  • a cavity forming surface is provided in the shaping base portion (see FIG. 8 and the like).
  • a cavity forming surface is not particularly limited, for example, the main surface (for example, the lower main surface including the forming base bottom surface 21A 12 ) of the shaping base portion is cut using a rotary cutting tool such as an end mill. It can be formed by As a rotary cutting tool, end mills, such as a flat end mill and a ball end mill, can be mentioned, for example. Therefore, while the above-mentioned powder bed fusion bonding method is suitable for forming a relatively complicated shape surface, it is suitable for forming a relatively simple shape surface in a cutting process.
  • the cavity forming surface 21B 11 that can be formed by performing cutting processing has, for example, a rectangular, square, triangular, semicircular, or semielliptical shape in cross sectional view (as an example, It may be configured to have a lens shape shown in FIG.
  • First aspect A mold comprising a shaped portion and a shaped base portion joined to the shaped portion, the mold comprising: The mold wherein the shaped base portion has a cavity forming surface.
  • Second aspect The mold according to the first aspect, wherein the cavity forming surface is provided on a main surface of the shaping base portion which is located on the opposite side to a bonding surface side of the shaping portion and the shaping base portion.
  • Third aspect In the second aspect, the main surface of the modeling base portion further includes a modeling base bottom surface in addition to the cavity forming surface.
  • Fourth aspect In any one of the first to third aspects, the mold has a fluid passage inside.
  • the mold according to the fourth aspect wherein the fluid passage is provided in at least one of the shaping base portion and the shaping portion.
  • Sixth aspect The mold according to the fourth or fifth aspect, wherein the fluid passage is a temperature control medium passage or a degassing passage.
  • Seventh aspect A method of manufacturing a mold, Forming a shaped portion by sequentially forming a plurality of solidified layers on the shaping base portion by light beam irradiation; Providing a cavity forming surface on the modeling base portion.
  • Eighth aspect The manufacturing method according to the seventh aspect, wherein the cavity forming surface is formed on the bottom surface side of the forming base of the forming base portion.
  • the mold has a fluid passage inside; The method according to claim 1, wherein the fluid passage is formed in at least one of the shaping base portion and the shaping portion.
  • a temperature control medium path or a degassing path is formed as the fluid path.
  • the cavity forming surface is formed by cutting the shaping base portion.
  • the twelfth aspect The method according to any one of the seventh to eleventh aspects, wherein the shaped part is formed by a powder bed fusion bonding method.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Powder Metallurgy (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

La présente invention concerne, une matrice présentant une partie fabriquée et une partie de base de fabrication jointe à la partie fabriquée, ladite partie de base de fabrication présentant une surface de formation de cavité. La présente invention concerne selon un mode de réalisation, un procédé de fabrication d'une matrice, ledit procédé comprenant : une étape de formation, d'une partie de base de fabrication, une partie fabriquée en formant séquentiellement une pluralité de couches solides par exposition à un faisceau de lumière ; et une étape consistant à fournir une surface de formation de cavité à la partie de base de fabrication.
PCT/JP2017/042611 2016-11-29 2017-11-28 Matrice et son procédé de fabrication WO2018101256A1 (fr)

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JP2016-230780 2016-11-29
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061924A (ja) * 2004-08-25 2006-03-09 Sekiso Kanagata Kenkyusho:Kk 積層金型の製造方法
JP2008221801A (ja) * 2007-03-15 2008-09-25 Ngk Insulators Ltd 金型構成部材及びその製造方法
JP2015058643A (ja) * 2013-09-19 2015-03-30 日本電気株式会社 金型及び射出成形方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061924A (ja) * 2004-08-25 2006-03-09 Sekiso Kanagata Kenkyusho:Kk 積層金型の製造方法
JP2008221801A (ja) * 2007-03-15 2008-09-25 Ngk Insulators Ltd 金型構成部材及びその製造方法
JP2015058643A (ja) * 2013-09-19 2015-03-30 日本電気株式会社 金型及び射出成形方法

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