JP2001001109A - Manufacture of metallic mold - Google Patents

Manufacture of metallic mold

Info

Publication number
JP2001001109A
JP2001001109A JP11177474A JP17747499A JP2001001109A JP 2001001109 A JP2001001109 A JP 2001001109A JP 11177474 A JP11177474 A JP 11177474A JP 17747499 A JP17747499 A JP 17747499A JP 2001001109 A JP2001001109 A JP 2001001109A
Authority
JP
Japan
Prior art keywords
mold
casting
model
panel
molded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11177474A
Other languages
Japanese (ja)
Inventor
Toshiyuki Usui
敏之 臼井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP11177474A priority Critical patent/JP2001001109A/en
Publication of JP2001001109A publication Critical patent/JP2001001109A/en
Pending legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To hold down the cost-up of a metallic mold by shortening the term from design to manufacture, at the time of manufacturing the metallic mold. SOLUTION: Two forming panels 14, 18 formed with an existing press-die, are beforehand prepared, and a rough pattern is manufactured by roughly cutting a foaming resin block and a first forming panel 14 is covered and stuck on a recessed part in this pattern. The pattern with the forming panel is embedded into molding sand and molten metal is poured into the obtd. sand mold and the pattern portion is replaced into a casting 13. Then, a sticking layer is formed on the forming panel 14 left on the casting 13 after shaking out and a second forming panel 18 is covered and stuck on this sticking layer. In this way, since the metallic mold can be manufactured without using an NC machining tool, the preparation of NC working data and the actual cutting work with the NC machining tool can be saved.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、プレス金型の模型
を砂に埋め込み、この模型を溶湯で溶かして鋳物に置き
換えるフルモールド法で金型を製造する金型の製造方法
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a mold by embedding a model of a press mold in sand, melting the model with a molten metal, and manufacturing the mold by a full molding method in which the mold is replaced with a casting.

【0002】[0002]

【従来の技術】フルモールド法とは、発泡樹脂ブロック
を切削して模型を造り、この模型を砂に埋め込み、得ら
れた砂型に溶湯を注入して模型の部分を鋳物に置き換え
る方法をいう。以下、フルモールド法でプレス金型を製
造する方法を説明する。
2. Description of the Related Art The full molding method is a method of cutting a foamed resin block to form a model, embedding the model in sand, injecting a molten metal into an obtained sand mold, and replacing the model with a casting. Hereinafter, a method of manufacturing a press die by a full mold method will be described.

【0003】図7は従来の金型の製造方法を示すフロー
チャートであり、図中ST×××はステップ番号を示
す。 ST100;発泡樹脂で形成したブロック(以下、「発
泡樹脂ブロック」という)を準備し、この発泡樹脂ブロ
ックをNC(numerical control)工作機械で精密に切
削してプレス金型の模型を造る。
FIG. 7 is a flowchart showing a conventional mold manufacturing method. In the figure, STxxx indicates a step number. ST100: A block formed of a foamed resin (hereinafter, referred to as a “foamed resin block”) is prepared, and the foamed resin block is precisely cut by an NC (numerical control) machine tool to produce a press die model.

【0004】ST101;プレス金型の模型を砂に埋め
込んで砂型を得る。 ST102;得られた砂型に溶湯を注入し、模型を溶湯
で溶かしてその部分を鋳物に置き換える。 ST103;型ばらし後、鋳物の凹部をNC工作機械で
プレス成型面となるように切削し、精密に仕上げる。こ
れで、プレス金型の製造工程が完了する。
ST101: A model of a press mold is embedded in sand to obtain a sand mold. ST102: A molten metal is poured into the obtained sand mold, the model is melted with the molten metal, and the portion is replaced with a casting. ST103: After releasing the mold, the concave portion of the casting is cut by an NC machine tool so as to be a press-molded surface, and is precisely finished. Thus, the manufacturing process of the press die is completed.

【0005】図8(a),(b)は従来の金型の製造方
法の要部を説明した図であり、(a)は図7のST10
0を示し、(b)は図7のST103を示す。(a)に
おいて、模型100の凹部101は、プレス金型の凹部
成形面に相当する部分である。従って、模型100を切
削する際に、模型100の凹部101をプレス金型の凹
部成形面に合せるために、凹部101はNC工作機械1
02を使用して3次元の製品形状面を精密に切削する必
要がある。(b)において、鋳物105の凹部106
は、プレス金型の凹部成形面になる部分である。従っ
て、鋳物105の凹部106をプレス金型の凹部成形面
に合せるために、凹部106はNC工作機械102を使
用して3次元の製品形状面を精密に切削する必要があ
る。
FIGS. 8 (a) and 8 (b) are views for explaining a main part of a conventional method for manufacturing a mold, and FIG.
0, and (b) shows ST103 of FIG. In (a), a concave portion 101 of a model 100 is a portion corresponding to a concave portion forming surface of a press die. Therefore, when the model 100 is cut, the concave 101 is set to the NC machine tool 1 in order to match the concave 101 of the model 100 with the concave forming surface of the press die.
It is necessary to precisely cut the three-dimensional product shape surface by using No. 02. In (b), the recess 106 of the casting 105
Is a portion to be the concave molding surface of the press die. Therefore, in order to align the concave portion 106 of the casting 105 with the concave portion forming surface of the press die, the concave portion 106 needs to be precisely cut into a three-dimensional product shape surface using the NC machine tool 102.

【0006】[0006]

【発明が解決しようとする課題】しかし、模型100の
凹部101や鋳物105の凹部106をプレス金型の凹
部成形面に合わてNC工作機械102で精密に仕上げる
ためには、NC工作機械102を制御するNC加工デー
タを必要とする。このため、金型を製造する際に、NC
加工データ作成と、そのNC加工データを用いて、実際
のNC工作機械で切削加工をしなければならないので、
設計から製作までの期間が長くなり、そのことがコスト
アップの要因になる。
However, in order to precisely finish the concave portion 101 of the model 100 and the concave portion 106 of the casting 105 with the concave forming surface of the press die with the NC machine tool 102, the NC machine tool 102 must be used. Requires NC processing data to control. For this reason, when manufacturing a mold, NC
Since machining data must be created and the actual NC machine tool must be used for cutting using the NC machining data,
The period from design to production becomes longer, which causes cost increase.

【0007】そこで、本発明の目的は、金型を製造する
際に、設計から製作までの期間を短くして金型のコスト
アップを抑えることができる金型の製造方法を提供する
ことにある。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a mold, which can reduce the cost of the mold by shortening the period from design to manufacture when manufacturing the mold. .

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
に請求項1は、プレス金型で成形した成形パネルを二枚
用意すると共に、発泡樹脂ブロックを粗削りすることで
概略形状模型を作成する加工工程と、この模型の凹部又
は凸部に、前記成形パネルのうちの一枚を被せ、接着す
る第1被冠工程と、成形パネル付き模型を砂に埋め込む
砂込め工程と、得られた砂型に溶湯を注入して模型部分
を鋳物に置き換える鋳造工程と、型ばらし後の鋳物に残
っている一枚目の成形パネル上に接着層を形成し、この
接着層に二枚目の成形パネルを被せ、接着する第2被冠
工程とからなることを特徴とする。
In order to solve the above-mentioned problem, a first aspect of the present invention is to prepare a schematic panel by preparing two molded panels formed by a press die and roughly cutting a foamed resin block. A processing step, a first crowning step of covering and adhering one of the molded panels to the concave or convex portion of the model, a sanding step of embedding the model with the molded panel in sand, and a sand mold obtained. A casting step of injecting the molten metal into the casting and replacing the model part with a casting, forming an adhesive layer on the first molding panel remaining in the casting after mold release, and attaching the second molding panel to this adhesive layer And a second covering step of covering and bonding.

【0009】模型の凹部又は凸部に成形パネルのうちの
一枚を被せる構成にして模型の凹部又は凸部をラフに粗
削りする。このため、模型の凹部又は凸部を、例えば手
作業で切削することができる。従って、NC工作機械で
模型を精密に切削する必要がないので、NC加工データ
作成と実際のNC工作機械での切削加工とを省くことが
できる。また、鋳物に残っている一枚目の成形パネル
に、二枚目の成形パネルを被せて金型の成形面を構成す
る。このため、鋳物の凹部又は凸部をNC工作機械で精
密に切削する必要はないので、NC加工データ作成と実
際のNC工作機械での切削加工とを省くことができる。
[0009] The concave or convex portion of the model is rough-cut roughly by making one of the molded panels cover the concave or convex portion of the model. Therefore, the concave or convex portion of the model can be cut, for example, manually. Therefore, since it is not necessary to precisely cut the model with the NC machine tool, it is possible to omit the preparation of the NC machining data and the actual cutting with the NC machine tool. Further, the molding surface of the mold is formed by covering the second molding panel on the first molding panel remaining in the casting. For this reason, since it is not necessary to precisely cut the concave portion or the convex portion of the casting with the NC machine tool, it is possible to omit the preparation of the NC machining data and the cutting process with the actual NC machine tool.

【0010】[0010]

【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。図1は本発明に係る金型の製造
方法で製造したプレス金型の断面図である。プレス金型
10は、凹部成形面12aを有する雌型12と、凸部成
形面20aを有する雄型20とからなり、雄型20を下
降させて凸部成形面20aと凹部成形面12aとでパネ
ル(図示せず)を所望の形状にプレス成形するものであ
る。雌型12は、鋳物13の上面凹部13aに成形パネ
ル14を融着し、成形パネル14の表面に接着剤を塗布
して接着層17を成形し、接着層17に成形パネル18
を接着して凹部成形面12aを形成したものである。
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a press die manufactured by the die manufacturing method according to the present invention. The press mold 10 includes a female mold 12 having a concave molding surface 12a and a male mold 20 having a convex molding surface 20a. The male mold 20 is lowered to form the convex molding surface 20a and the concave molding surface 12a. A panel (not shown) is pressed into a desired shape. The female mold 12 is formed by fusing the molded panel 14 to the upper surface recess 13 a of the casting 13, applying an adhesive to the surface of the molded panel 14 to form an adhesive layer 17, and forming the molded panel 18 on the adhesive layer 17.
Are bonded to form a concave molding surface 12a.

【0011】鋳物13は、一例としてねずみ鋳鉄(FC
250)で上部に上面凹部13aを有するように鋳造し
たものである。成形パネル14,18は、それぞれ板厚
t1が0.75mmの冷間圧延鋼板(SPCC)を既存
のプレス金型で成形した部材である。成形パネル14と
しては、例えば自動車のボディを構成する製品用のパネ
ル(すなわち、製品パネル)を使用する。なお、図1に
おいて、理解を容易にするために成形パネル14,18
の板厚t1を比較的厚くしたので、成形パネル14,1
8の形状が僅かに異なっているが実際には同じ形状であ
る。
The casting 13 is, for example, gray cast iron (FC).
250), it is cast so as to have the upper surface concave portion 13a at the top. The formed panels 14 and 18 are members obtained by forming a cold-rolled steel plate (SPCC) having a thickness t1 of 0.75 mm using an existing press die. As the molded panel 14, for example, a panel for a product constituting an automobile body (that is, a product panel) is used. In FIG. 1, the molded panels 14 and 18 are provided for easy understanding.
Of the molded panels 14, 1
8 is slightly different, but is actually the same shape.

【0012】接着層17は、金属粉末を含有したエポキ
シ系2液混合タイプの接着剤を厚さt2(例えば10m
m)に塗布したものである。接着層17の厚さt2を1
0mmに設定した理由は、厚さt2が10mm未満にな
ると、接着層17が薄くなりすぎて一枚目の成型パネル
14と二枚目の成型パネル18との形状誤差を吸収でき
ないで、一枚目の成型パネル14と二枚目の成型パネル
18との間に隙間ができるおそれがあるからである。ま
た、接着層17の厚さt2が10mmを越えると、接着
層17が厚くなりすぎてプレス操作を繰り返すことによ
り、接着層17が薄くなり凹部成型面12aの形状が変
形するおそれがあるからである。
The adhesive layer 17 is made of an epoxy-based two-liquid mixed type adhesive containing metal powder having a thickness t2 (for example, 10 m).
m). The thickness t2 of the adhesive layer 17 is set to 1
The reason for setting the thickness to 0 mm is that if the thickness t2 is less than 10 mm, the adhesive layer 17 becomes too thin to absorb the shape error between the first molded panel 14 and the second molded panel 18. This is because a gap may be formed between the eye molding panel 14 and the second molding panel 18. Further, if the thickness t2 of the adhesive layer 17 exceeds 10 mm, the adhesive layer 17 becomes too thick, and the pressing operation is repeated, so that the adhesive layer 17 becomes thin and the shape of the concave molding surface 12a may be deformed. is there.

【0013】雄型20は、鋳物23の下面凸部23aに
成形パネル24を融着し、成形パネル24の表面に接着
剤を塗布して接着層27を形成し、接着層27に成形パ
ネル28を接着して凸部成形面20aを形成したもので
ある。鋳物23は、鋳物13と同様に、一例としてねず
み鋳鉄(FC250)で下部に下面凹部23aを有する
ように鋳造したものである。成形パネル24,28は、
成形パネル14,18と同一部材であって、それぞれ板
厚t1が0.75mmのSPCCをプレス金型で成形し
たものである。
The male mold 20 is formed by fusing a molded panel 24 to the lower surface convex portion 23a of the casting 23, applying an adhesive to the surface of the molded panel 24 to form an adhesive layer 27, and forming the adhesive panel 27 on the adhesive layer 27. Are bonded to form the convex molding surface 20a. The casting 23 is, similarly to the casting 13, cast by gray cast iron (FC250) as an example so as to have a lower surface concave portion 23a at a lower portion. The molded panels 24, 28
The same members as the molded panels 14 and 18 are formed by pressing a SPCC having a plate thickness t1 of 0.75 mm with a press die.

【0014】接着層27は、接着層17と同様に、金属
粉末を含有したエポキシ系2液混合タイプの接着剤を厚
さt2(例えば10mm)に塗布したものである。な
お、雌型12と雄型20とは同じ構成なので、以下雌型
12の製造方法について説明して雄型20の製造方法に
ついては説明を省略する。
Similarly to the adhesive layer 17, the adhesive layer 27 is formed by applying an epoxy-based two-liquid type adhesive containing metal powder to a thickness t2 (for example, 10 mm). Since the female mold 12 and the male mold 20 have the same configuration, the method of manufacturing the female mold 12 will be described below, and the description of the method of manufacturing the male mold 20 will be omitted.

【0015】図2は本発明に係る金型の製造方法を示す
フローチャートであり、図中ST××はステップ番号を
示す。 ST01;(加工工程)プレス金型で成形した成形パネ
ルを予め二枚用意すると共に、発泡樹脂ブロックを粗削
りすることで概略形状(ラフな)模型を作成する。 ST02;(第1被冠工程)この模型の凹部に成形パネ
ルのうちの一枚を被せ、接着剤で接着する。
FIG. 2 is a flowchart showing a method of manufacturing a mold according to the present invention. In the drawing, STxx indicates a step number. ST01; (Processing Step) Two molded panels formed by a press die are prepared in advance, and a foamed resin block is roughly cut to form a schematic (rough) model. ST02; (First Crowning Step) One of the molded panels is placed on the concave portion of the model and bonded with an adhesive.

【0016】ST03;(砂込め工程)成形パネル付き
模型を砂に埋め込んで砂型を得る。 ST04;(鋳造工程)得られた砂型に溶湯を注入して
模型部分を鋳物に置き換える。 ST05;(第2被冠工程)型ばらし後、鋳物に残って
いる一枚の成形パネル上に、金属粉末を含有したエポキ
シ系2液混合タイプの接着剤で接着層を形成し、この接
着層に二枚目の成形パネルを被せて接着する。
ST03: (Sanding process) A model with a molded panel is embedded in sand to obtain a sand mold. ST04; (Casting Step) The molten metal is poured into the obtained sand mold to replace the model portion with a casting. ST05; (Second Crowning Step) After releasing the mold, an adhesive layer is formed on one molded panel remaining in the casting with an epoxy-based two-liquid mixed type adhesive containing metal powder. And adhere the second molded panel.

【0017】ST01〜ST05の鋳造方法によれば、
模型の凹部に一枚目の成形パネルを被せることで模型の
凹部をラフに加工することができる。このため、例えば
手作業で模型を切削することが可能になった。また、型
ばらし後、鋳物に残っている一枚目の成形パネルに、二
枚目の成形パネルを被せることでプレス金型の凹部成形
面を得る。このため、凹部成形面の切削工程を省くこと
ができる。以下、ST01〜ST05の各工程を詳しく
説明する。
According to the casting method of ST01 to ST05,
By covering the concave part of the model with the first molded panel, the concave part of the model can be roughly processed. For this reason, for example, it has become possible to cut the model manually. Further, after the mold is separated, the second molded panel is put on the first molded panel remaining in the casting to obtain the concave molding surface of the press die. For this reason, the step of cutting the concave molding surface can be omitted. Hereinafter, each step of ST01 to ST05 will be described in detail.

【0018】図3(a)〜(c)は本発明に係る金型の
鋳造方法の第1説明図であり、(a)は加工工程(ST
01)を示し、(b)及び(c)は第1被冠工程(ST
02)を示す。(a)において、発泡樹脂で形成したブ
ロックを準備し、準備した発泡樹脂ブロックから模型3
0を切削する。この際、精密に切削する必要があった模
型30の凹部31をラフに切削することが可能である。
凹部31をラフに切削することができる理由は(c)の
後に後述する。なお、発泡樹脂としては、一例として発
泡ポリスチレンを使用したが、これに限るものではな
い。
3 (a) to 3 (c) are first explanatory views of a mold casting method according to the present invention, and FIG. 3 (a) shows a processing step (ST).
01), and (b) and (c) show the first crowning step (ST)
02). In (a), a block formed of foamed resin is prepared, and a model 3 is prepared from the prepared foamed resin block.
Cut 0. At this time, it is possible to roughly cut the concave portion 31 of the model 30 that had to be cut precisely.
The reason why the concave portion 31 can be roughly cut will be described later after (c). As the foamed resin, foamed polystyrene was used as an example, but is not limited to this.

【0019】(b)において、模型30の上部両端3
2,33に接着剤34,34を塗布して、一枚目の成形
パネル14を矢印、の如く凹部31に向けて降ろ
す。(c)において、模型30の凹部31に一枚目の成
形パネル14を被せて接着する。ラフに切削した凹部3
1は、プレス金型の凹部成形面と形状が異なるが、凹部
31に成形パネル14を被せることにより、模型30の
凹部をプレス金型の凹部成形面と同じ形状にすることが
できる。なお、ラフに切削した凹部31と成形パネル1
4との間に隙間36,37が開くが、隙間36,37に
は鋳造工程で溶湯を充填することができる。
In (b), the upper end 3 of the model 30
The adhesives 34, 34 are applied to the panels 2, 33, and the first molded panel 14 is lowered toward the recess 31 as indicated by an arrow. In (c), the first molded panel 14 is put on and bonded to the concave portion 31 of the model 30. Concave part 3 roughly cut
1 is different in shape from the concave forming surface of the press die, but by forming the concave panel 31 on the forming panel 14, the concave portion of the model 30 can have the same shape as the concave forming surface of the press die. In addition, the concave portion 31 roughly cut and the molded panel 1
4, the gaps 36 and 37 are opened, but the gaps 36 and 37 can be filled with molten metal in the casting process.

【0020】模型30の凹部31に一枚目の成形パネル
14を被せて、精度の高い凹部を得る構成にしたので、
模型30の凹部31をラフに切削することができる。こ
のため、NC工作機械を使用しないで、例えば手作業で
模型30を切削することが可能になった。従って、NC
工作機械で模型を精密に切削する必要がないので、NC
加工データ作成と実際のNC工作機械での切削加工とを
省くことができる。
Since the first molded panel 14 is placed over the concave portion 31 of the model 30 to obtain a highly accurate concave portion,
The concave portion 31 of the model 30 can be roughly cut. For this reason, it became possible to cut the model 30 manually, for example, without using an NC machine tool. Therefore, NC
Since it is not necessary to precisely cut a model with a machine tool, NC
It is possible to omit processing data creation and actual cutting with an NC machine tool.

【0021】図4(a),(b)は本発明に係る金型の
鋳造方法の第2説明図であり、(a)は砂込め工程(S
T03)を示し、(b)は鋳造工程(ST04)の途中
までを示す。(a)において、成形パネル14を被せた
模型30を反転して砂型枠40内にセットし、次にノズ
ル42から砂を供給して成形パネル14を被せた模型3
0を砂43に埋め込んで砂型を得る。
FIGS. 4 (a) and 4 (b) are second explanatory views of the mold casting method according to the present invention, and FIG.
T03) and (b) shows a part of the casting process (ST04). In (a), the model 30 covered with the molded panel 14 is turned upside down and set in a sand mold 40, and then sand is supplied from a nozzle 42 to cover the model 3 covered with the molded panel 14.
0 is embedded in the sand 43 to obtain a sand mold.

【0022】(b)において、得られた砂型45に矢印
の如く溶湯46を注入し、溶湯46で模型30を溶か
す。このとき、溶湯46は凹部31と成形パネル14と
の間の隙間36,37にも侵入して、隙間36,37を
埋める。
In (b), a molten metal 46 is poured into the obtained sand mold 45 as indicated by an arrow, and the model 30 is melted with the molten metal 46. At this time, the molten metal 46 also enters the gaps 36 and 37 between the concave portion 31 and the molded panel 14 and fills the gaps 36 and 37.

【0023】図5(a),(b)は本発明に係る金型の
鋳造方法の第3説明図であり、(a)及び(b)は鋳造
工程(ST04)の最後までを示す。(a)において、
注入した溶湯で模型の全体を溶かし、その部分を鋳物1
3に置き換える。鋳物13の凹部13aには成形パネル
14が一体に付着する。図4(b)で示したように、模
型の凹部と成形パネル14との間の隙間を溶湯で埋める
ので、鋳物13の凹部13aと成形パネル14との間に
は隙間が発生しない。
FIGS. 5A and 5B are third explanatory views of the mold casting method according to the present invention, and FIGS. 5A and 5B show the steps up to the end of the casting step (ST04). In (a),
Melt the entire model with the poured molten metal, and replace that part with casting 1
Replace with 3. The molded panel 14 is integrally attached to the concave portion 13a of the casting 13. As shown in FIG. 4B, since the gap between the concave portion of the model and the molded panel 14 is filled with the molten metal, no gap is generated between the concave portion 13a of the casting 13 and the molded panel 14.

【0024】なお、成形パネル14は、板厚t1が0.
75mmのSPCCなので、注入した溶湯の熱で半溶融
状態になり、溶湯に接する部分は合金化し、鋳物に密に
貼りついた状態になる。(b)において、型ばらし後、
鋳物13を砂型から取り出して、鋳物13に残っている
一枚目の成形パネル14を上向きに配置する。
The molded panel 14 has a thickness t1 of 0.1.
Since it is a 75 mm SPCC, it becomes a semi-molten state due to the heat of the poured molten metal, and the portion in contact with the molten metal is alloyed and tightly adhered to the casting. In (b), after separating the mold,
The casting 13 is taken out of the sand mold, and the first molding panel 14 remaining in the casting 13 is arranged upward.

【0025】図6(a),(b)は本発明に係る金型の
鋳造方法の第4説明図であり、(a),(b)は第2被
冠工程(ST05)を示す。(a)において、鋳物13
に残っている一枚目の成形パネル14に、接着剤を塗布
して厚さt2(一例として10mm)の接着層17を形
成する。次に、二枚目の成形パネル18を矢印、の
如く接着層17に向けて降ろす。
FIGS. 6 (a) and 6 (b) are views for explaining a fourth method of casting a mold according to the present invention, and FIGS. 6 (a) and 6 (b) show a second covering step (ST05). In FIG.
An adhesive is applied to the first molded panel 14 remaining in the step (a) to form an adhesive layer 17 having a thickness t2 (for example, 10 mm). Next, the second molded panel 18 is lowered toward the adhesive layer 17 as indicated by an arrow.

【0026】(b)において、接着層17に二枚目の成
形パネル18を被せて接着する。これで、精度の高い凹
部成形面12aを備えた雌型12を得る。接着層17に
二枚目の成形パネル18を被せ精度の高い凹部成形面1
2aを得る構成にしたので、NC工作機械で切削しない
で、精密な凹部成形面12aを得ることができる。従っ
て、NC工作機械を制御するために必要なNC加工デー
タ作成と、実際のNC工作機械での切削加工とを省くこ
とができる。
In (b), a second molded panel 18 is put on the adhesive layer 17 and adhered. As a result, the female mold 12 having the highly accurate concave molding surface 12a is obtained. The second molding panel 18 is put on the adhesive layer 17 and the concave molding surface 1 with high precision is formed.
Since the structure 2a is obtained, a precise recess forming surface 12a can be obtained without cutting with an NC machine tool. Therefore, it is possible to omit the creation of the NC machining data necessary for controlling the NC machine tool and the actual cutting with the NC machine tool.

【0027】[0027]

【実施例】以下に、本発明に係る金型の実験例を表1を
参照の上説明する。なお、本発明はこの実験例に限定さ
れるものではない。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an experimental example of a mold according to the present invention will be described with reference to Table 1. The present invention is not limited to this experimental example.

【0028】[0028]

【表1】 [Table 1]

【0029】図1に示す金型(雌型、雄型)を準備し、
この金型のプレス圧を5kgf/mm2に設定してプレ
ス操作を4500ショット実施して、接着層の剥離、割
れ及び欠けの発生や接着層の厚さの変化について実験を
行った。ここで、図1の金型を構成する成型パネルは、
板厚t1が0.75mmのSPCCであり、接着層は、
金属粉末を含有したエポキシ系2液混合タイプの接着剤
を厚さt2を10mmに塗布したものである。
Prepare the molds (female mold, male mold) shown in FIG.
The press operation of this mold was set to 5 kgf / mm 2 and the press operation was performed for 4500 shots, and an experiment was conducted on the occurrence of peeling, cracking and chipping of the adhesive layer, and changes in the thickness of the adhesive layer. Here, the molding panel constituting the mold of FIG.
The board thickness t1 is 0.75 mm SPCC, and the adhesive layer is
An epoxy-based two-liquid mixed type adhesive containing metal powder is applied to a thickness t2 of 10 mm.

【0030】実験の結果、接着層に剥離、割れ、欠けが
発生しないことが判明し、また接着層は厚さt2も変化
しないことが判明した。従って、この金型の評価は良で
あり、実用可能である。ここで、接着層は厚さt2が変
化しなかった理由は、金属粉末を含有した接着剤を使用
したためである。
As a result of the experiment, it was found that peeling, cracking and chipping did not occur in the adhesive layer, and that the thickness t2 of the adhesive layer did not change. Therefore, the evaluation of this mold is good and practical. Here, the reason why the thickness t2 of the adhesive layer did not change was that an adhesive containing metal powder was used.

【0031】なお、前記実施の形態では、図1に示す成
型パネル14,18をSPCCで成形した例を説明した
が、表面処理を施した鋼板や、他の炭素鋼及び低合金鋼
に変更することは差しつかえなく、材質を格別に限定す
るものではない。また、成形パネルの板厚t1を0.7
5mmとしたが、成型パネルの板厚t1を任意に設定し
てもよい。さらに、成形層17の厚さt2を10mmに
したが、成形層17の厚さt2を任意に設定してもよ
い。
In the above-described embodiment, an example in which the molded panels 14 and 18 shown in FIG. 1 are formed by SPCC has been described. However, a steel sheet subjected to a surface treatment, or another carbon steel or a low alloy steel may be used. This is no problem, and the material is not particularly limited. Further, the thickness t1 of the formed panel is set to 0.7.
The thickness is set to 5 mm, but the thickness t1 of the molded panel may be set arbitrarily. Further, although the thickness t2 of the molding layer 17 is set to 10 mm, the thickness t2 of the molding layer 17 may be arbitrarily set.

【0032】また、成形層17をエポキシ系2液混合タ
イプの接着剤で形成したが、その他の接着剤を使用して
もよい。さらに、鋳物13,23をねずみ鋳鉄(FC2
50)で鋳造した例を説明したが、その他の鋳鉄や鋳鋼
で鋳造してもよい。また、図1に示すように金型の雌型
12及び雄型20の両方の型を本発明に係る製造方法で
製造する例を説明したが、これに限らないで一方の型を
従来技術の製造方法で製造してもよい。
Although the molding layer 17 is formed of an epoxy-based two-liquid type adhesive, other adhesives may be used. Further, the castings 13 and 23 are made of gray cast iron (FC2
Although the example of casting in 50) has been described, it may be cast with other cast iron or cast steel. Further, as shown in FIG. 1, an example in which both the female mold 12 and the male mold 20 of the mold are manufactured by the manufacturing method according to the present invention has been described. However, the present invention is not limited to this. It may be manufactured by a manufacturing method.

【0033】[0033]

【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1は、模型の凹部又は凸部に成形パネルの
うちの一枚を被せることにより、模型の凹部又は凸部を
に粗削りすることができる。このため、模型をNC工作
機械を使用しなくても、例えば手作業で切削することが
できる。従って、NC工作機械を制御するために必要な
NC加工データ作成と、実際のNC工作機械での切削加
工とを省くことができる。
According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect, the concave portion or the convex portion of the model can be roughly cut by covering one of the molded panels on the concave portion or the convex portion of the model. Therefore, the model can be cut, for example, manually without using an NC machine tool. Therefore, it is possible to omit the creation of the NC machining data necessary for controlling the NC machine tool and the actual cutting with the NC machine tool.

【0034】また、鋳物に残っている一枚の成形パネル
に、二枚目の成形パネルを被せて金型の成形面を構成す
る。このため、鋳物の凹部又は凸部をNC工作機械で切
削する必要はない。従って、NC工作機械を制御するた
めに必要なNC加工データ作成と、実際のNC工作機械
での切削加工とを省くことができる。この結果、金型を
製造する際に、設計から製作までの期間を短くして金型
のコストアップを抑えることができる。
A molding surface of a mold is formed by covering a single molding panel remaining on the casting with a second molding panel. For this reason, it is not necessary to cut the concave or convex part of the casting with the NC machine tool. Therefore, it is possible to omit the creation of the NC machining data necessary for controlling the NC machine tool and the actual cutting with the NC machine tool. As a result, when manufacturing the mold, it is possible to shorten the period from design to production, and suppress an increase in the cost of the mold.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る金型の製造方法で製造したプレス
金型の断面図
FIG. 1 is a sectional view of a press die manufactured by a die manufacturing method according to the present invention.

【図2】本発明に係る金型の製造方法を示すフローチャ
ート
FIG. 2 is a flowchart showing a method for manufacturing a mold according to the present invention.

【図3】本発明に係る金型の鋳造方法の第1説明図FIG. 3 is a first explanatory view of a mold casting method according to the present invention.

【図4】本発明に係る金型の鋳造方法の第2説明図FIG. 4 is a second explanatory view of the mold casting method according to the present invention.

【図5】本発明に係る金型の鋳造方法の第3説明図FIG. 5 is a third explanatory view of the mold casting method according to the present invention.

【図6】本発明に係る金型の鋳造方法の第4説明図FIG. 6 is a fourth explanatory view of the mold casting method according to the present invention.

【図7】従来の金型の製造方法を示すフローチャートFIG. 7 is a flowchart showing a conventional mold manufacturing method.

【図8】従来の金型の製造方法の要部を説明した図FIG. 8 is a view for explaining a main part of a conventional mold manufacturing method.

【符号の説明】[Explanation of symbols]

10…プレス金型、13,23…鋳物、14,18…成
形パネル、30…模型、31…凹部、43…砂、45…
砂型、46…溶湯。
Reference numeral 10: press die, 13, 23: casting, 14, 18: molded panel, 30: model, 31: concave portion, 43: sand, 45:
Sand mold, 46 ... Molten metal.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B29C 33/38 B29C 33/38 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) B29C 33/38 B29C 33/38

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 プレス金型で成形した成形パネルを二枚
用意すると共に、発泡樹脂ブロックを粗削りすることで
概略形状模型を作成する加工工程と、 この模型の凹部又は凸部に、前記成形パネルのうちの一
枚を被せ、接着する第1被冠工程と、 成形パネル付き模型を砂に埋め込む砂込め工程と、 得られた砂型に溶湯を注入して模型部分を鋳物に置き換
える鋳造工程と、 型ばらし後の鋳物に残っている一枚目の成形パネル上に
接着層を形成し、この接着層に二枚目の成形パネルを被
せ、接着する第2被冠工程と、からなる金型の製造方
法。
1. A processing step of preparing two molded panels formed by a press die and roughly cutting a foamed resin block to create a schematic shape model, and forming the molded panel in a concave portion or a convex portion of the model. A first crowning step of covering and bonding one of the above, a sanding step of embedding a model with a molded panel in sand, a casting step of injecting molten metal into the obtained sand mold and replacing the model part with a casting, A second covering step of forming an adhesive layer on the first molded panel remaining in the casting after mold release, covering the second molded panel with the adhesive layer, and bonding. Production method.
JP11177474A 1999-06-23 1999-06-23 Manufacture of metallic mold Pending JP2001001109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11177474A JP2001001109A (en) 1999-06-23 1999-06-23 Manufacture of metallic mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11177474A JP2001001109A (en) 1999-06-23 1999-06-23 Manufacture of metallic mold

Publications (1)

Publication Number Publication Date
JP2001001109A true JP2001001109A (en) 2001-01-09

Family

ID=16031559

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11177474A Pending JP2001001109A (en) 1999-06-23 1999-06-23 Manufacture of metallic mold

Country Status (1)

Country Link
JP (1) JP2001001109A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410920A (en) * 2004-01-24 2005-08-17 Full Bar Composite Ltd A method of producing a mould

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410920A (en) * 2004-01-24 2005-08-17 Full Bar Composite Ltd A method of producing a mould
GB2410920B (en) * 2004-01-24 2008-09-03 Full Bar Composite Ltd A method of producing a mould for a product, a method of producing a moulded product and a method of producing a reusable mould

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