JPH0324969A - Manufacture of wire guide - Google Patents
Manufacture of wire guideInfo
- Publication number
- JPH0324969A JPH0324969A JP16113089A JP16113089A JPH0324969A JP H0324969 A JPH0324969 A JP H0324969A JP 16113089 A JP16113089 A JP 16113089A JP 16113089 A JP16113089 A JP 16113089A JP H0324969 A JPH0324969 A JP H0324969A
- Authority
- JP
- Japan
- Prior art keywords
- wire guide
- pin
- pins
- green sheet
- sintering
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000010304 firing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- 238000005245 sintering Methods 0.000 abstract description 10
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract description 6
- 230000008602 contraction Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 description 2
- 150000001845 chromium compounds Chemical class 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Impact Printers (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、ドットインパクトタイプのプリンタに用いら
れるワイヤガイドの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a wire guide used in a dot impact type printer.
［従来の技術］
ワイヤガイドは、直径０．２〜０．５關程度の高硬度の
印字ワイヤを適正な位置に配置させるためのものであり
、印字ワイヤが摺動自在に挿通される神通孔が設けられ
ている。この神通孔は正確な形状、大きさに形或される
ことが必要であり、精度が悪いと印字ワイヤの摺動に障
害をきたし、プリンタの性能を低下させる要因となる。[Prior Art] A wire guide is used to place a highly hard printing wire with a diameter of about 0.2 to 0.5 degrees in an appropriate position, and has a hole through which the printing wire is slidably inserted. is provided. This hole needs to be formed into an accurate shape and size, and if the accuracy is poor, it will impede the sliding of the printing wire and cause a decline in the performance of the printer.
ワイヤガイドは、硬度、耐摩耗性などの面から、酸化ジ
ルコニウム、酸化アルミニウムなどのセラミックにより
形成されている。従来、このワイヤガイドを製造する場
合は、セラミックの焼結前の状態（グリーンシ一ト）に
おいて、所定の形状に形成し、印字ワイヤの挿通孔を穿
設してから焼成し硬化させていた。The wire guide is made of ceramic such as zirconium oxide or aluminum oxide in terms of hardness and wear resistance. Conventionally, when manufacturing this wire guide, the ceramic was formed into a predetermined shape before sintering (green sheet), a hole was drilled through it for the printed wire, and then it was fired and hardened. .
［解決しようとする課題］
グリーンシ一トは極めて軟らかい状態であるため、正確
に挿通孔を穿設する作業は精密さを要し煩しいものであ
った。また、グリーンシ一トのバインダーである有機物
の消失などにより、焼結時に収縮が生じた。そのため、
形状、寸法に狂いがでて、揮通孔を所定の大きさの真円
に形成することは非常に困難であった。収縮率、収縮方
向を考慮して形成しても、安定性、信頼性に乏しかった
。[Problem to be Solved] Since the green sheet is extremely soft, the work of accurately drilling an insertion hole requires precision and is troublesome. In addition, shrinkage occurred during sintering due to the disappearance of organic matter, which is the binder of the green sheet. Therefore,
It was very difficult to form a perfect circle with a predetermined size for the venting holes because the shape and dimensions were irregular. Even if the shrinkage rate and shrinkage direction were taken into consideration when forming, the stability and reliability were poor.
従って、焼成後に研磨、研削などの加工を必要とし、大
変面倒であった。Therefore, processing such as polishing and grinding is required after firing, which is very troublesome.
そこで、本発明の目的は、正確な形状および大きさの挿
通孔を有するワイヤガイドを容易に製造することにある
。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to easily manufacture a wire guide having an insertion hole having an accurate shape and size.
［課題を解決するための手段コ
本発明に係るワイヤガイドの製造方法の特徴は、セラミ
ックグリーンシートをそれにピンを挿通させた状態で焼
成し、しかる後にピンを除去するところにある。[Means for Solving the Problems] A feature of the method for manufacturing a wire guide according to the present invention is that a ceramic green sheet is fired with pins inserted therein, and then the pins are removed.
なお、ピンの除去方法としては、ピンを薬剤により除去
する方法が採用される場合もある。Note that as a method for removing the pins, a method of removing the pins with a chemical may be adopted.
［作用］
所望の抑通孔と同じ径の超鋼などからなるピンを、軟ら
かいグリーンシ一トに挿通させることによって、適正な
大きさの真円がグリーンシ一トに形成される。そしてピ
ンが挿通されたままの状態で焼成、硬化される。この焼
成時に収縮を生じ、円が縮小しようとしたり、変形しよ
うとしても、ピンによって抑止される。そして適正な形
状、大きさの揮通孔が形成される。[Operation] By inserting a pin made of super steel or the like having the same diameter as the desired holding hole into the soft green sheet, a perfect circle of an appropriate size is formed in the green sheet. Then, it is fired and hardened with the pin still inserted. Even if shrinkage occurs during firing, and the circle attempts to shrink or deform, the pins prevent it. Then, a vent hole having an appropriate shape and size is formed.
［実施例］ 本発明の一実施例を図面を参照して説明する。[Example] An embodiment of the present invention will be described with reference to the drawings.
本発明に係る製造方法に基いて形威するワイヤガイドは
、第２．３図に示すように、酸化ジルコニウム、酸化ア
ルミニウムなどのセラミックからなり、所定の位置に複
数の揮通孔ｌが穿設されている。As shown in Fig. 2.3, the wire guide produced based on the manufacturing method of the present invention is made of ceramic such as zirconium oxide or aluminum oxide, and has a plurality of vent holes l drilled at predetermined positions. has been done.
本発明はこの挿通孔１を正確に穿設するものである。The present invention is to accurately drill this insertion hole 1.
第１図に示すように、治具２にはワイヤガイドの揮通孔
１に対応する位置に、押通孔１と等しい径のピン３が、
着脱自在に植設されている。ピン３は、クロム化合物な
ど、十分な硬度をもち、融点の十分高い金属からなるも
のである。As shown in FIG. 1, the jig 2 has a pin 3 having the same diameter as the push-through hole 1 at a position corresponding to the push-through hole 1 of the wire guide.
It is removably installed. The pin 3 is made of a metal having sufficient hardness and a sufficiently high melting point, such as a chromium compound.
ワイヤガイドの製造にあたっては、まず酸化ジルコニウ
ムなどのセラミックの焼結前の状態であるグリーンシ一
ト４を、図示しない上梓などを用いて、所望のワイヤガ
イドの外形に形成し、治具２の所定の位置に載置する。In manufacturing the wire guide, first, green sheet 4, which is a pre-sintered ceramic such as zirconium oxide, is formed into the desired wire guide shape using a molding tool (not shown). Place it in place.
このとき、軟らかいグリーンシ一ト４にピン３が挿入さ
れ、貫通する。At this time, the pin 3 is inserted into and penetrates the soft green sheet 4.
そして、ピン３が挿通されたままの状態で、治具２上の
グリーンシ一ト４は適正な温度（酸化ジルコニウムの場
合、約１２００〜１７００℃。）で焼結され硬化し、セ
ラミックになる。その後、ピン３を抜き取ると、ピン３
が揮通されていた部分にピン３と同径の抑通孔を有する
ワイヤガイド（第２，３図示。）が完或する。Then, with the pin 3 still inserted, the green sheet 4 on the jig 2 is sintered and hardened at an appropriate temperature (approximately 1200 to 1700°C in the case of zirconium oxide) to become a ceramic. . After that, when pin 3 is removed, pin 3
A wire guide (shown in the second and third figures) having a holding hole with the same diameter as the pin 3 is now completely replaced in the area where the pin 3 had been vented.
通常、セラミック焼結時には、セラミックのバインダー
である有磯物が消失するため収縮が生じるが、本発明に
係る製造方法によると、十分な硬度をもったピン３によ
って挿通孔１の縮小、変形は抑止される。そして適正な
形状、大きさの挿通孔１をもつワイヤガイドが形成され
る。Normally, during ceramic sintering, shrinkage occurs due to the disappearance of ceramic binder, but according to the manufacturing method of the present invention, the shrinkage and deformation of the insertion hole 1 are prevented by the pin 3 having sufficient hardness. Deterred. A wire guide having an insertion hole 1 of appropriate shape and size is then formed.
なお、ピン３を除去する方法の一例としては、セラミッ
クの焼結後に再び冷却し、膨脹率の違いによってｔ．Ｉ
’ｉ通孔１よりもピン３の径を若干小さくしてピン３を
引き佐くことができる。またピン３を溶解する薬剤を用
いて、ピン３を溶解して除去する方法、例えば、クロム
化合物からなるピン３を第２硝酸セリウムアニモンによ
り溶解する方法も可能である。An example of a method for removing the pins 3 is to cool the ceramic again after sintering, and to remove the pin 3 due to the difference in expansion rate. I
'i It is possible to make the diameter of the pin 3 slightly smaller than that of the through hole 1 so that the pin 3 can be pulled out easily. It is also possible to dissolve and remove the pin 3 using a chemical that dissolves the pin 3, for example, to dissolve the pin 3 made of a chromium compound with cerium animonium nitrate.
本尖施例においては酸化ジルコニウムのセラミックによ
るワイヤガイドの製造方法を示したが、セラミックの材
質に応じた焼結温度が適宜設定される。そしてピン３は
、焼結温度に加熱されても融解する恐れがなく、十分な
硬度をもった金属から形成される。In the present embodiment, a method for manufacturing a wire guide using zirconium oxide ceramic is shown, but the sintering temperature is appropriately set depending on the material of the ceramic. The pin 3 is made of a metal with sufficient hardness so that it will not melt even when heated to a sintering temperature.
［効果］
以上のように本発明によれば、所望の形状、大きさの挿
通孔をもつワイヤガイドが、極めて精度よく製造できる
。従ってセラミック焼結後に再加工する必要がなくなり
、製造工程が簡略化し、費用、労力ともに低減できる。[Effects] As described above, according to the present invention, a wire guide having an insertion hole of a desired shape and size can be manufactured with extremely high precision. Therefore, there is no need for reprocessing after ceramic sintering, which simplifies the manufacturing process and reduces both cost and labor.
第１図は本発明の実施例を示す一部切欠斜視図、第２図
はワイヤガイドの正面図、第３図は第２図Ａ−Ａ線断面
図である。
３・・・ピン、
４・・・グリーンシ一ト。
第
■
図FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the wire guide, and FIG. 3 is a sectional view taken along the line A--A in FIG. 3...pin, 4...green seat. Figure ■
Claims (2)
せた状態で焼成し、しかる後に上記ピンを除去すること
を特徴とするワイヤガイドの製造方法。(1) A method for manufacturing a wire guide, which comprises firing a ceramic green sheet with pins inserted therein, and then removing the pins.
特徴とする請求項１記載のワイヤガイドの製造方法。(2) The method for manufacturing a wire guide according to claim 1, characterized in that the pin is dissolved and removed using a chemical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16113089A JPH0324969A (en) | 1989-06-23 | 1989-06-23 | Manufacture of wire guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16113089A JPH0324969A (en) | 1989-06-23 | 1989-06-23 | Manufacture of wire guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324969A true JPH0324969A (en) | 1991-02-01 |
Family
ID=15729171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16113089A Pending JPH0324969A (en) | 1989-06-23 | 1989-06-23 | Manufacture of wire guide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7458599B2 (en) | 2004-05-20 | 2008-12-02 | Aprica Ikujikenkyukai Aprica Kassai Kabushikikaisha | Luggage basket and folding baby carriage provided with the same |
-
1989
- 1989-06-23 JP JP16113089A patent/JPH0324969A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7458599B2 (en) | 2004-05-20 | 2008-12-02 | Aprica Ikujikenkyukai Aprica Kassai Kabushikikaisha | Luggage basket and folding baby carriage provided with the same |
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