JPS5871029A - Method of working nozzle - Google Patents
Method of working nozzleInfo
- Publication number
- JPS5871029A JPS5871029A JP16765681A JP16765681A JPS5871029A JP S5871029 A JPS5871029 A JP S5871029A JP 16765681 A JP16765681 A JP 16765681A JP 16765681 A JP16765681 A JP 16765681A JP S5871029 A JPS5871029 A JP S5871029A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- machining
- cup
- recess
- shaped recess
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
【発明の詳細な説明】 するものである。[Detailed description of the invention] It is something to do.
現在使用されているインクジェットのノズルを作るノズ
ル加工方法は、例えば第１図（イ）ｋ示したように、中
心に設けられた銅線材ｌの周囲にニッケル２が電着され
た薄い被加工ノズル材８の片面に、第１図（ロ）で示し
たようにノズル長１ｌｂを残シてドリル４でカップ形状
の凹み５が設けられた後、第１図（ハ）に示したように
線材ｌをエツチングしてノズル６が形成されている。The nozzle processing method for making inkjet nozzles that is currently used is, for example, as shown in Figure 1 (a) k, a thin processed nozzle in which nickel 2 is electrodeposited around a copper wire l provided in the center. A cup-shaped recess 5 is formed on one side of the wire rod 8 using a drill 4, leaving a nozzle length of 1 lb, as shown in FIG. 1(B). Nozzle 6 is formed by etching l.
このようにドリル４でカップ形状の凹み５を設けて、ノ
ズル長ｌＪＬｂを所定の寸法精度に加工する゛従来の方
法では、ドリル４と被加工物８が押し合う圧力により、
ドリル４が逃げたり、被加工物８ ′が弾性的に一
み易いので、ドリル４の切れ味が微妙に変化するため、
ノズル長ｉ叉ｂの加工精度が悪いという欠点があり、こ
のノズル長の精度を良くするために、後加工で修正して
いる。更に，機械的な加工方法のため、加工歪み層が形
成され、耐蝕性に悪影響が出るという欠点があった。In this way, the cup-shaped recess 5 is formed with the drill 4, and the nozzle length lJLb is machined to a predetermined dimensional accuracy. In the conventional method, the pressure between the drill 4 and the workpiece 8,
The sharpness of the drill 4 changes slightly because the drill 4 escapes and the workpiece 8' is elastic and easy to see.
There is a drawback that the processing accuracy of the nozzle lengths i and b is poor, and in order to improve the accuracy of this nozzle length, it is corrected in post-processing. Furthermore, because of the mechanical processing method, a processing strain layer is formed, which has a negative effect on corrosion resistance.
本発明は、上記従来例の欠点を解消するために、放電加
工により被加工ノズル材の表面にカップ形状の凹み設け
るか、被加工ノズル材の表面に予め機械加工により設け
られたカップ形状の凹みの内面に放電加工を施こすこと
を特徴とし、その目的は加工ひずみや加工応力が小さく
、ノズル長の加工精度の良いノズル加工方法を提供する
ものである。以下、図面により実に例を詳細に説明する
。In order to eliminate the drawbacks of the above-mentioned conventional examples, the present invention provides a cup-shaped recess on the surface of the nozzle material to be processed by electric discharge machining, or a cup-shaped recess that is previously provided on the surface of the nozzle material to be processed by machining. The purpose is to provide a nozzle machining method with low machining strain and stress and high machining accuracy of the nozzle length. Examples will now be explained in detail with reference to the drawings.
第２図は、本発明の放電加工方法の原理図を示したもの
で、７は電源及びコントロール回路、８はカップ加工用
の工具電極、９は被加工ノズル材、ｌ・０は絶縁液体、
１１は抵抗、■２はコンデンサであり、電源及びコント
ロール回路７には、放電用の直流あるいはパルス電圧源
と各種のコンド゛ロール回路（放電開始の検知回路や短
絡の検出回路）が設けられ、工具電極８は開示していな
い駆動部により、高精度、低速状態で上下される。また
短絡時には、駆動部が短絡信号に１より急速に上昇する
機構を持っている。被加工ノズル材９は例えば中心に銅
線（直径８０μｍ）を埋めたニッケル板であり、また絶
縁液体１０は例えばケロシンである。FIG. 2 shows a principle diagram of the electric discharge machining method of the present invention, where 7 is a power supply and control circuit, 8 is a tool electrode for cup machining, 9 is a nozzle material to be machined, 1 and 0 are insulating liquid,
11 is a resistor, 2 is a capacitor, and the power supply and control circuit 7 is provided with a DC or pulse voltage source for discharging and various control circuits (discharge start detection circuit and short circuit detection circuit). The tool electrode 8 is moved up and down with high precision and at low speed by a drive unit (not disclosed). Furthermore, in the event of a short circuit, the driving section has a mechanism in which the short circuit signal increases more rapidly than 1. The nozzle material 9 to be processed is, for example, a nickel plate with a copper wire (80 μm in diameter) buried in the center, and the insulating liquid 10 is, for example, kerosene.
第８図は、本発明の実施例の放電加工方法でカップ形状
を全て加工する方法を示した図で、第８図（イ）に示し
たように、例えば中心に銅線１８を埋めたニッケル板か
らなる被加工ノズル材９の片面を工具電極８に対向させ
ると、第１図に°゛示した抵抗１１とコンデンサ１２か
らなる発振回路により発生したパルスが、連続的に工具
電極８と被加工ノズル材９０間に印加され、微小な放電
を発生し、このエネルギーで被加工ノズル材９が除去さ
れ、−第８図（ロ）に示したようにカップ形状の凹み１
４が形成される。本発明の方法では、１個当りのパルス
の放電エネルギーを微小にしているので、カップ形状の
凹み１４の内面を平滑な面に仕上げることができる。こ
のようにカップ形状の凹み１４を形成した後、第８図Ｐ
ｅに示したように中心の銅線１８をエツチングにより除
去し、ノズル１５が出来上がる゛。FIG. 8 is a diagram showing a method of machining the entire cup shape using the electrical discharge machining method according to the embodiment of the present invention. As shown in FIG. When one side of the workpiece nozzle material 9 made of a plate is placed opposite the tool electrode 8, pulses generated by an oscillation circuit consisting of a resistor 11 and a capacitor 12 shown in FIG. The energy is applied between the machining nozzle materials 90 to generate a minute electrical discharge, and this energy removes the nozzle material 9 to be machined, creating a cup-shaped recess 1 as shown in FIG.
4 is formed. In the method of the present invention, since the discharge energy of each pulse is made minute, the inner surface of the cup-shaped recess 14 can be finished with a smooth surface. After forming the cup-shaped recess 14 in this way, FIG.
As shown in e, the central copper wire 18 is removed by etching, and the nozzle 15 is completed.
第４図は、第１次のカップ形状の加工を機械加工により
行なった本発明の他の実施例のノズル加工方法を示した
図で、まず第４図に示したように中心に銅線１８を持つ
被加工ノズル材９の片面に、第４図←）に示したように
ドリル１６を用いてカップ形状の凹み１７を設けた後、
第４図ｆつに示したように被加工ノズル材９のカップ形
状の凹み１７に工具電極８を対向させ、放電加工により
残りの部分１８を除去し、その後、銅線１８をエツチン
グにより除去してノズル１ ’６を形成１するものであ
る。FIG. 4 is a diagram showing a nozzle processing method according to another embodiment of the present invention in which the first cup shape is processed by machining. First, as shown in FIG. After forming a cup-shaped recess 17 on one side of the nozzle material 9 to be processed using a drill 16 as shown in Fig. 4←),
As shown in FIG. 4, the tool electrode 8 is placed opposite the cup-shaped recess 17 of the nozzle material 9 to be machined, and the remaining portion 18 is removed by electric discharge machining, and then the copper wire 18 is removed by etching. The nozzle 1'6 is formed by using the nozzle 1'6.
本実施例の方法では、放電加工を一部だけ行なうので、
工具電極８の消耗を著しく延長させるととができる。In the method of this example, only part of the electrical discharge machining is performed, so
This can significantly prolong the wear of the tool electrode 8.
なお、工具電極８としては、銅（Ｃｕ）も使用できるが
、タングステン（Ｗ）の方が好ましい。Note that although copper (Cu) can also be used as the tool electrode 8, tungsten (W) is more preferable.
次に、放電加工の具体的条件例を示すと、電圧： ＤＣ
？ＯＶ、 −ｔ ンテンサ： ８００ＰＦ’＜抵抗＝８
０００、工具電極送り速度＝０．２〜０．４μｍ／ｚｅ
ｃ。Next, an example of specific conditions for electrical discharge machining is as follows: Voltage: DC
? OV, -t tensor: 800PF'<resistance=8
000, tool electrode feed rate = 0.2 to 0.4 μm/ze
c.
工具：タングステン であった。Tool: Tungsten Met.
以上説明したように、本発明によれば、被加工ノズル材
のカップ形状の加工を放電加工により行なうか、予め機
械加工でカップ形状の凹みを形成した後、この凹みの内
面に放電加工を施したので、ノズル長の加工精度が良く
なり、加工歪みや加工応力を小さくすることができると
いう利点がある。As explained above, according to the present invention, the cup-shaped nozzle material to be machined is machined by electric discharge machining, or after a cup-shaped recess is previously formed by machining, the inner surface of this recess is subjected to electric discharge machining. Therefore, there is an advantage that the machining accuracy of the nozzle length is improved and machining distortion and machining stress can be reduced.
＼\
第１図は、従来の機械加工によるノズルの加工方法を示
した図、第２図は、本発明の放電加工方法の原理図、第
８図は、本発明の実施例の放電加工方法を示した図、第
４図は、本発明の他の実施例の放電加工方法を示した図
である。
７・・・電源及びコントロール回路、８・・・工具電極
、９・・・被加工ノズル材、１０・・・絶縁液体、ｌｌ
・・・抵抗、１２・・・コンデンサ、１８・・・銅線、
１４・・・凹み、１５・・・ドリル、１６・・・凹み。
特許出願人 株式会社 リ コ −Fig. 1 is a diagram showing a conventional machining method for a nozzle, Fig. 2 is a diagram showing the principle of the electrical discharge machining method of the present invention, and Fig. 8 is a diagram showing the electrical discharge machining method according to an embodiment of the present invention. FIG. 4 is a diagram showing an electrical discharge machining method according to another embodiment of the present invention. 7... Power supply and control circuit, 8... Tool electrode, 9... Nozzle material to be processed, 10... Insulating liquid, ll
...Resistor, 12...Capacitor, 18...Copper wire,
14...dent, 15...drill, 16...dent. Patent applicant Rico Co., Ltd. −
Claims (1)
装着し、放電加工により前記被加工ノズル材の表面にカ
ップ形状の凹みを設けるか、前記被加工ノズル材の表面
に予め機械加工で設けられたカップ形状の凹みの内面に
放電加工を施すようにすることを特徴とするノズル加工
方法。A nozzle material to be processed is mounted in an insulating liquid so as to face a processing electrode, and a cup-shaped recess is provided on the surface of the nozzle material to be processed by electric discharge machining, or by machining in advance on the surface of the nozzle material to be processed. A nozzle machining method characterized by performing electrical discharge machining on the inner surface of a provided cup-shaped recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16765681A JPS5871029A (en) | 1981-10-20 | 1981-10-20 | Method of working nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16765681A JPS5871029A (en) | 1981-10-20 | 1981-10-20 | Method of working nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5871029A true JPS5871029A (en) | 1983-04-27 |
Family
ID=15853795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16765681A Pending JPS5871029A (en) | 1981-10-20 | 1981-10-20 | Method of working nozzle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5871029A (en) |
-
1981
- 1981-10-20 JP JP16765681A patent/JPS5871029A/en active Pending
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