JPS61197109A - Depth detecting method of drilled hole in multi-layered vessel - Google Patents
Depth detecting method of drilled hole in multi-layered vesselInfo
- Publication number
- JPS61197109A JPS61197109A JP3599985A JP3599985A JPS61197109A JP S61197109 A JPS61197109 A JP S61197109A JP 3599985 A JP3599985 A JP 3599985A JP 3599985 A JP3599985 A JP 3599985A JP S61197109 A JPS61197109 A JP S61197109A
- Authority
- JP
- Japan
- Prior art keywords
- drill
- echo
- layered material
- layered
- inner cylinder
- 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
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
- B23Q17/2233—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece
- B23Q17/225—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the tool relative to the workpiece of a workpiece relative to the tool-axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は多層容器に加工された孔の深さを高精度に検
出するだめの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 for highly accurately detecting the depth of a hole formed in a multilayer container.
メタノール合成等の高温・高圧水素環境下で使用される
多層容器は、低合金鋼等耐水素性を有する材料を使用し
た内筒部と、その外側にあって安価な炭素鋼を使用し九
層成部とによって構成されている。ところが、このよう
な材料構成が成立つためには層成部に圧力軽減のための
検知孔を設ける必要がある。検知孔を設ける理由を詳記
すると次のとおりである。Multi-layer containers used in high-temperature, high-pressure hydrogen environments such as methanol synthesis have an inner cylinder made of hydrogen-resistant materials such as low-alloy steel, and a nine-layer outer cylinder made of inexpensive carbon steel. It is composed of two parts. However, in order to establish such a material configuration, it is necessary to provide a detection hole in the stratified portion for pressure relief. The reason for providing the detection hole is as follows.
□長年の使用で反応容器内部から内筒の中をＨ２が拡散
して外に出、これが層成材の中に拡散侵入してＨ２侵食
による割れを発生する。このとき層成材の周囲の圧力が
高いと侵入するＨ２ガスも多くなり１割れの発生が促進
されるが、検知孔を設けることによシ層成材周囲の圧力
が低下（大気と同一）シ、また＋Ｈ２はこれを通って大
気中に散逸する。□ After many years of use, H2 diffuses from inside the reaction vessel into the inner cylinder and comes out, and this diffuses into the layered material, causing cracks due to H2 erosion. At this time, if the pressure around the layered material is high, more H2 gas will enter, promoting the occurrence of single cracks, but by providing a detection hole, the pressure around the layered material will be reduced (same as the atmosphere). The +H2 also dissipates into the atmosphere through this.
従来、このような検知孔を加工するには、第４図に示す
装置が用いられていた。これはドリルｌをモータ４、に
よって駆動するもので９層成材８ａの厚さ１巻き数及び
層成材８ａ間の隙間８ｂから算定推定し九層成部８の層
厚に基づいて、容器の外側からドリルｌにより層成部８
の全厚さにわたって検知孔９の加工を行なう。Conventionally, an apparatus shown in FIG. 4 has been used to process such detection holes. The drill l is driven by the motor 4, and the outside of the container is estimated based on the thickness of the nine-layered material 8a and the number of turns per turn and the gap 8b between the nine-layered material 8a. From layered part 8 with drill l
The detection hole 9 is processed over the entire thickness of the hole.
このようにして行なう検知孔９の加工では。 In processing the detection hole 9 in this way.
層成材８ａの厚さのばらつき及び層成材８３間の隙間８
ｂのばらつきが存在することから１層成部８に穿孔され
た検知孔９の最深部を内筒７との境界にすることは極め
て困難である。これを第５図に示す。すなわち、検知孔
９が浅すぎる場合（第５図Ａ）と検知孔９が深すぎる場
合（第５図Ｂ）とが生ずる。検知孔９が浅すぎる場合は
層成材８ａの最内層の層成部の圧力は大気圧とはならな
い。すなわち、内部の水素圧力が大気圧とならず検知孔
９の効果がなくなり９層成材８ａに水素侵食が発生する
こととなる。また、検知孔９が深すぎる場合は、内筒７
に傷が付くことから容器６強度面（耐圧）が問題となる
。Variation in thickness of layered materials 8a and gaps 8 between layered materials 83
Because of the variation in b, it is extremely difficult to make the deepest part of the detection hole 9 drilled in the one-layered part 8 the boundary with the inner cylinder 7. This is shown in FIG. That is, there are cases in which the detection hole 9 is too shallow (FIG. 5A) and cases in which the detection hole 9 is too deep (FIG. 5B). If the detection hole 9 is too shallow, the pressure at the innermost stratified portion of the stratified material 8a will not reach atmospheric pressure. That is, the internal hydrogen pressure does not reach atmospheric pressure, the effect of the detection hole 9 is lost, and hydrogen erosion occurs in the nine-layered material 8a. In addition, if the detection hole 9 is too deep, the inner cylinder 7
The strength (pressure resistance) of the container 6 becomes a problem because the container 6 is damaged.
多層容器を穿孔するドリルに超音波を発振し。 Ultrasonic waves are transmitted to a drill that perforates a multilayer container.
それの反射波にもとづいてドリルの先端位置を知るよう
にした。The position of the tip of the drill was determined based on the reflected waves.
ドリルの先端が多層容器の層成材８ａと内筒７の境界に
位置したときの特有な反射波を検出することによって精
度の良い加工孔深さを得ることができる。By detecting the characteristic reflected wave when the tip of the drill is located at the boundary between the layered material 8a of the multilayer container and the inner cylinder 7, the depth of the machined hole can be obtained with high accuracy.
第１図に本発明の実施例を示す。同図において、ｌはド
リル、２はドリル１に直結されたホイール歯車、３はホ
イール歯車２に噛合するビニオン歯車、４はビニオン歯
車３を回転駆動するモータをそれぞれ示し、これらによ
って検知孔９の加工装置が構成される。次に、ドリルｌ
の後端には油を介して接触させた探触子５を設け、該探
触子５には超音波探傷器６が接続されている。超音波探
傷器６は探触子５に対して超音波を発生するとともにド
リル１の先端位置を表示できるもので、これらによって
加工位置検出装置を構成する。FIG. 1 shows an embodiment of the present invention. In the figure, l is a drill, 2 is a wheel gear directly connected to the drill 1, 3 is a binion gear that meshes with the wheel gear 2, and 4 is a motor that rotationally drives the binion gear 3. Processing equipment is configured. Next, drill
A probe 5 is provided at the rear end of the probe 5 in contact with the probe 5 through oil, and an ultrasonic flaw detector 6 is connected to the probe 5 . The ultrasonic flaw detector 6 is capable of generating ultrasonic waves to the probe 5 and displaying the position of the tip of the drill 1, and these constitute a machining position detection device.
以下本実施例の作用を説明する。切削速度を８１ｍ１ｎ
＋探傷感度は［ドリル先端部エコーがブラウン管に現
出する」感度、ドリルｌと探触子５との接触媒質をマシ
ン油として孔加工した結果が第２図および第３図に示す
とおりである。The operation of this embodiment will be explained below. Cutting speed 81m1n
+Flaw detection sensitivity is the sensitivity at which the echo at the tip of the drill appears on the cathode ray tube, and the results of hole drilling using machine oil as the couplant between drill l and probe 5 are shown in Figures 2 and 3. .
第２図において■、■および◎がそれぞれドリル１の位
置であり、各位置における探傷結果を第３図に示す。第
８図において、Ｅエコーは超音波探傷器からの発振波、
Ｆはドリル１先端からのエコー、また、Ｇエコーは層成
材８ａと層成材８ａの隙間からの反射を示すエコーであ
る。即ち、ドリルｌの先端が層成材８ａの各層を通過す
る際に超音波が反射して微小なＧエコーとして検出され
るものである。同様に、ドリル１の先端が層成材８ａと
内筒７の境界位置に達すると同時にＨエコーが検出され
る。このＨエコーが検 ｌ出されたときにモータ４を
停止させる手段が作動するようにしておけばドリル１は
所定の層成材８ａと内筒７の境界まで正確な深さの検知
孔を加工することとなる。In FIG. 2, ■, ■, and ◎ are the positions of the drill 1, respectively, and the flaw detection results at each position are shown in FIG. In Figure 8, E echo is the oscillation wave from the ultrasonic flaw detector,
F is an echo from the tip of the drill 1, and G echo is an echo showing reflection from the gap between the layered materials 8a and the layered materials 8a. That is, when the tip of the drill l passes through each layer of the layered material 8a, ultrasonic waves are reflected and detected as minute G echoes. Similarly, the H echo is detected at the same time as the tip of the drill 1 reaches the boundary position between the layered material 8a and the inner cylinder 7. If a means for stopping the motor 4 is activated when this H echo is detected, the drill 1 will drill a detection hole with an accurate depth to the boundary between the predetermined layered material 8a and the inner cylinder 7. That will happen.
尚、ドリル１の回転に伴いドリル１と探傷子５の接触面
で、探傷子５の超音波発信面の異常昇温あるいは摩耗等
が生ずる恐れが考えられるが、接触面にはマシン油ある
いはグリセリン等の潤滑剤を用いれば全く支障はなく、
まだ、超音波の検出性能もドリル１の先端迄マシン油を
充分に滴下すれば問題はなく、逆に検出感度が向上する
。It should be noted that as the drill 1 rotates, there is a risk that the ultrasonic transmitting surface of the flaw probe 5 may become abnormally heated or worn out at the contact surface between the drill 1 and the flaw probe 5. There is no problem at all if you use a lubricant such as
However, there is no problem with the ultrasonic detection performance as long as the machine oil is sufficiently dropped to the tip of the drill 1, and on the contrary, the detection sensitivity is improved.
本発明によれば、多層容器の検知孔の加工において、ド
リルに超音波を発振し、それの反射波によってドリルの
先端位置を検出できるようにしたから、最内層の層成材
と内筒の境界迄の検知孔加工が正確に行なえる。According to the present invention, when machining a detection hole in a multilayer container, an ultrasonic wave is emitted to the drill, and the tip position of the drill can be detected by the reflected wave. Detection hole machining can be performed accurately.
第１図は本発明の実施例を示す正面図、第２図は実施例
の加工状態を示す概略正面図、第３図は各ドリル位置に
おけるエコーの説明図、第４図は従来装置の正面図、第
５図は従来装置によって加工した検知孔の説明図である
。
１・・ドリル、４・・モータ、５・・・探触子、６・・
・超音波探傷器、７−内筒、８・・・層成部、９・・・
検知孔。
簗１閃
諮３囚
車４菖
扇５国Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a schematic front view showing the processing state of the embodiment, Fig. 3 is an explanatory diagram of echoes at each drill position, and Fig. 4 is a front view of a conventional device. FIG. 5 is an explanatory view of a detection hole machined by a conventional device. 1...Drill, 4...Motor, 5...Probe, 6...
・Ultrasonic flaw detector, 7-inner cylinder, 8... layered part, 9...
Detection hole. 1 Yan, 3 Prisoners, 4 Iris Fans, 5 Countries
Claims (1)
反射波にもとづいてドリルの先端位置を検知することを
特徴とする多層容器の加工孔深さ検知方法。A method for detecting the depth of a processed hole in a multilayer container, characterized by emitting ultrasonic waves to a rotationally driven drill and detecting the tip position of the drill based on the reflected waves of the ultrasonic waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3599985A JPS61197109A (en) | 1985-02-25 | 1985-02-25 | Depth detecting method of drilled hole in multi-layered vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3599985A JPS61197109A (en) | 1985-02-25 | 1985-02-25 | Depth detecting method of drilled hole in multi-layered vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61197109A true JPS61197109A (en) | 1986-09-01 |
Family
ID=12457495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3599985A Pending JPS61197109A (en) | 1985-02-25 | 1985-02-25 | Depth detecting method of drilled hole in multi-layered vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61197109A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044186B1 (en) | 2008-10-24 | 2011-06-28 | 삼성전기주식회사 | Drilling machine of computerized numerical control |
| CN105345528A (en) * | 2015-11-28 | 2016-02-24 | 孙新梅 | Ultrasonic testing drilling tool of V-shaped part |
| CN105345527A (en) * | 2015-11-28 | 2016-02-24 | 孙新梅 | V-shaped part drilling tool with ultrasonic testing function |
-
1985
- 1985-02-25 JP JP3599985A patent/JPS61197109A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044186B1 (en) | 2008-10-24 | 2011-06-28 | 삼성전기주식회사 | Drilling machine of computerized numerical control |
| CN105345528A (en) * | 2015-11-28 | 2016-02-24 | 孙新梅 | Ultrasonic testing drilling tool of V-shaped part |
| CN105345527A (en) * | 2015-11-28 | 2016-02-24 | 孙新梅 | V-shaped part drilling tool with ultrasonic testing function |
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