JPH0457674A - Cutting method by jet of abrasive mixing high pressure liquid - Google Patents
Cutting method by jet of abrasive mixing high pressure liquidInfo
- Publication number
- JPH0457674A JPH0457674A JP17068290A JP17068290A JPH0457674A JP H0457674 A JPH0457674 A JP H0457674A JP 17068290 A JP17068290 A JP 17068290A JP 17068290 A JP17068290 A JP 17068290A JP H0457674 A JPH0457674 A JP H0457674A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cut
- pressure liquid
- speed
- nozzle
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 10
- 238000005507 spraying Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 29
- 239000012530 fluid Substances 0.000 description 15
- 101100008044 Caenorhabditis elegans cut-1 gene Proteins 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、研磨材混入高圧液体噴流を利用し複合材料、
金属材料などの厚板材を切断加工するための切断方法に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention utilizes a jet of high-pressure liquid mixed with an abrasive to produce composite materials,
The present invention relates to a cutting method for cutting thick plate materials such as metal materials.
研磨材混入高圧液体噴流を応用した切断加工技術は、例
えば、特公昭６０−１３８００号公報などによって知ら
れており、金属材料を初めとして、複合材料などの非金
属材料の切断加工に適用されつつある。Cutting technology that applies high-pressure liquid jets mixed with abrasives is known, for example, from Japanese Patent Publication No. 60-13800, and is being applied to cutting not only metal materials but also non-metallic materials such as composite materials. be.
また、研磨材混入高圧液体噴流による切断方法は、鉄筋
コンクリート等の構造物の切断方法に適しており、この
種の従来技術としては、特開昭６２−２７７２９８号公
報、特開昭６３−１５０９８３号公報に開示されている
ものか知られている。Furthermore, the cutting method using a high-pressure liquid jet containing an abrasive is suitable for cutting structures such as reinforced concrete, and prior art techniques of this type include Japanese Patent Application Laid-Open No. 62-277298 and Japanese Patent Application Laid-open No. 63-150983. It is known whether it has been disclosed in a gazette.
この研磨材混入高圧液体噴流を使用して金属材料や複合
材料の厚板材を所定の外形に切断加工する場合には、加
工精度を確保する上で問題が種々生じる。When cutting a thick plate of metal or composite material into a predetermined shape using this abrasive-containing high-pressure liquid jet, various problems arise in ensuring machining accuracy.
例えば、厚板材とノズルとを相対移動させて切断加工を
行う場合、切断方向が変化する位置において、厚板材の
材質や厚さによっては、貫通する高圧液体噴流が厚板材
の出口側を必要以上に削り取るという問題があった。For example, when cutting is performed by moving a thick plate material and a nozzle relative to each other, depending on the material and thickness of the thick plate material, at the position where the cutting direction changes, the penetrating high-pressure liquid jet may exceed the exit side of the thick plate material more than necessary. There was a problem of scraping it off.
そこで、本発明の目的は、上述した従来の技術が有する
問題点を解消し、切断方向を変化させて任意の形状に切
断する場合の加工精度を向上させることのできる研磨材
混入高圧液体噴流による切断方法を提供することにある
。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional techniques, and to utilize a high-pressure liquid jet containing an abrasive that can improve the machining accuracy when cutting into an arbitrary shape by changing the cutting direction. The purpose is to provide a cutting method.
上記目的を達成するために、本発明は、直線部切断では
切断速度を被切断材の板厚の略半分の位置で高圧液体噴
流の流線が切断方向後方に略４５度の角度に曲がる速度
とし、切断方向が非連続的に変化する位置ではノズルの
移動を２〜３．５秒停止することを特徴とするものであ
る。In order to achieve the above object, the present invention reduces the cutting speed when cutting a straight section to a speed at which the streamline of the high-pressure liquid jet bends at an angle of approximately 45 degrees backward in the cutting direction at a position approximately half the thickness of the material to be cut. The present invention is characterized in that the movement of the nozzle is stopped for 2 to 3.5 seconds at a position where the cutting direction changes discontinuously.
本発明によれば、切断方向が変化する位置では、停止し
ているノズルからの高圧液体噴流が被切断材を垂直に貫
通し、高圧液体噴流の乱流によってその流出側が余分に
削られることがない。また、高圧液体噴流の流線が切断
方向後方に略４５度曲がるような切断速度が切断効率良
好であり、部分的な直線部の切断を組み合わせて被切断
材を任意の形状に精度良く切断できる。According to the present invention, at a position where the cutting direction changes, the high-pressure liquid jet from the stopped nozzle vertically penetrates the material to be cut, and the outflow side of the jet is not excessively scraped by the turbulent flow of the high-pressure liquid jet. do not have. In addition, the cutting speed at which the streamline of the high-pressure liquid jet bends approximately 45 degrees backward in the cutting direction provides good cutting efficiency, and by combining partial straight section cutting, the material to be cut can be accurately cut into any shape. .
以下、本発明による切断方法の一実施例について添付の
図面を参照して説明する。Hereinafter, an embodiment of the cutting method according to the present invention will be described with reference to the accompanying drawings.
第１図において、符号１は被切断材、符号２はノズルを
示す。このノズル２からは、研磨材が混入されている高
圧流体が被切断材１に対して垂直に噴射される。この高
圧流体の流線は符号３で示されている。図中、被切断材
１の一端にあるＡ点は切断の開始点を示し、Ｂ点に至る
まで、本実施例では、ノズル２を被切断材１に対して平
行に後述する所定の切断速度で直線的に移動させる。ま
た、Ｂ点は、切断方向が非連続的に変わる点であり、こ
のＢ点で、本実施例では、直角にノズル２の移動方向を
変え、被切断材１の端縁にある０点までノズル２を所定
の速度で直線的に移動させる。In FIG. 1, reference numeral 1 indicates a material to be cut, and reference numeral 2 indicates a nozzle. From this nozzle 2, high-pressure fluid mixed with an abrasive is injected perpendicularly to the material to be cut 1. This high-pressure fluid streamline is indicated by 3. In the figure, point A at one end of the workpiece 1 indicates the starting point of cutting, and in this embodiment, the nozzle 2 is moved parallel to the workpiece 1 at a predetermined cutting speed, which will be described later, until point B is reached. to move it in a straight line. Further, point B is a point where the cutting direction changes discontinuously, and at this point B, in this embodiment, the moving direction of the nozzle 2 is changed at right angles to the zero point at the edge of the material to be cut 1. The nozzle 2 is moved linearly at a predetermined speed.
なお、本実施例では、ノズル２を移動させているが、被
切断材１とノズル２との間で相対移動させるため被切断
材１を移動させてもよい。Although the nozzle 2 is moved in this embodiment, the material to be cut 1 may be moved in order to cause relative movement between the material to be cut 1 and the nozzle 2.
本発明による切断方法では、ノズル２を直線的に移動さ
せての直線部、すなわち、Ａ−Ｂ間の切断ては、その切
断速度は、特に、次のような速度に設定されるものであ
る。In the cutting method according to the present invention, when the nozzle 2 is moved linearly to cut the straight section, that is, between A and B, the cutting speed is particularly set to the following speed. .
すなわち、第２図に示されるように、ノズル２から噴射
される高圧流体噴流が被切断材１を切断するが、ノズル
２は、被切断材１の面に対して平行に相対的な速度を有
し、また、高圧流体噴流は被切断材１から切断方向に平
行な切断抵抗を受けるので、高圧流体噴流の流線３は、
切断方向後方に曲げられて被切断材１の裏側から流出す
ることになる。この流線３が曲がる位置および角度につ
いては、切断速度、被切断材１の材質、高圧流体噴流の
吐出圧力などの因子によって決まってくるが、本発明に
よる切断方法では、被切断材１の厚さｔの約半分の位置
で４５度後方へ曲がるような切断速度に設定する。That is, as shown in FIG. 2, the high-pressure fluid jet jetted from the nozzle 2 cuts the material 1 to be cut, but the nozzle 2 maintains a relative speed parallel to the surface of the material 1 to be cut. In addition, since the high-pressure fluid jet receives cutting resistance parallel to the cutting direction from the material to be cut 1, the streamline 3 of the high-pressure fluid jet is
It is bent backward in the cutting direction and flows out from the back side of the material 1 to be cut. The position and angle at which this streamline 3 bends are determined by factors such as the cutting speed, the material of the material 1 to be cut, and the discharge pressure of the high-pressure fluid jet. Set the cutting speed so that the blade turns 45 degrees backwards at about half of the distance t.
切断方向が変化する位置、すなわち、Ｂ点では、ノズル
２を２秒乃至３．５秒の間高圧流体噴流を噴射させたま
ま一時停止する（第３図参照）。その後、上記のＡ−Ｂ
間と同様の直線部Ｂ−Ｃ間の切断を行う。At the position where the cutting direction changes, that is, at point B, the nozzle 2 is temporarily stopped while ejecting the high-pressure fluid jet for 2 to 3.5 seconds (see FIG. 3). Then, A-B above
A cut is made between the straight line section B and C in the same way.
第１表は、直線部の切断速度と方向が変わるＢ点でのノ
ズル停止時間についての各材料についての試験データを
示したものである。この場合、高圧流体噴流の圧力は、
３２００ｐｓ ｉ、研磨材料としては、ガーネット“８
０を使用した。切断速度については、各材料毎に、表に
挙げられている切断速度に設定することによって、材料
の厚さの約半分の位置から切断方向後方に略４５度高圧
流体噴流が曲げられたことを示している。Table 1 shows test data for each material regarding the cutting speed of the straight section and the nozzle stop time at point B where the direction changes. In this case, the pressure of the high-pressure fluid jet is
3200 ps i, Garnet "8" as the polishing material
0 was used. Regarding the cutting speed, by setting the cutting speed to the one listed in the table for each material, it was confirmed that the high-pressure fluid jet was bent approximately 45 degrees backward in the cutting direction from a position approximately half the thickness of the material. It shows.
Ｂ点では、ノズル２が停止した際にこのノズル２から噴
射された高圧流体噴流の流線３が被切断材１を垂直に貫
通するので、停止時間が２秒乃至３．５秒の範囲であれ
ば、高圧流体噴流の乱流によるその流出側の破損が防止
される。なお、材質によって、ノズル２の停止時間の条
件は異なるが、短すぎると高圧流体噴流の流出側が不十
分に切断され、長い時間で切断すると、流出側を高圧流
体噴流が削りすぎてしまう。At point B, when the nozzle 2 stops, the streamline 3 of the high-pressure fluid jet jetted from the nozzle 2 vertically penetrates the workpiece 1, so the stopping time is in the range of 2 seconds to 3.5 seconds. If so, damage to the outflow side due to turbulence of the high-pressure fluid jet is prevented. Note that the conditions for the stop time of the nozzle 2 differ depending on the material, but if it is too short, the outflow side of the high-pressure fluid jet will be insufficiently cut, and if it is cut for a long time, the high-pressure fluid jet will scrape the outflow side too much.
また、Ａ−８間、Ｂ−Ｃ間の切断ては、あまり切断速度
を遅くすると高圧流体噴流の流出側か余分に切断され、
一方、速くしすぎると切断が不十分となる。しかし、上
記のように高圧流体噴流の流線が曲がるような切断速度
で切断することにより、流出側も切断代の範囲におさま
るように切断され効率的な切断を行うことができた。Also, when cutting between A-8 and B-C, if the cutting speed is too slow, the outflow side of the high-pressure fluid jet will be cut too much.
On the other hand, if the speed is too high, the cutting will be insufficient. However, by cutting at a cutting speed such that the streamline of the high-pressure fluid jet curves as described above, the outflow side was also cut within the range of the cutting allowance, and efficient cutting could be performed.
第１表
〔発明の効果〕
以上の説明から明らかなように、本発明によれば、直線
部切断では切断速度を被切断材の板厚の略半分の位置で
高圧液体噴流の流線が切断方向後方に略４５度の角度に
曲がる速度とし、切断方向が非連続的に変化する位置で
はノズルの移動を２〜３．５秒停止しながら、直線部の
切断を組み合わせて切断しているので、切断方向を変化
させる位置での加工精度が向上するとともに、全体とし
て効率よい切断加工を行うことができるTable 1 [Effects of the Invention] As is clear from the above explanation, according to the present invention, when cutting a straight section, the cutting speed is set to approximately half the thickness of the material to be cut so that the streamline of the high-pressure liquid jet cuts the cutting speed. The speed is set to bend at an angle of approximately 45 degrees backward in the direction, and the nozzle movement is stopped for 2 to 3.5 seconds at positions where the cutting direction changes discontinuously, and the cutting is performed in combination with straight sections. , machining accuracy is improved at the position where the cutting direction changes, and the overall cutting process is more efficient.
第１図は本発明による切断方法の一実施例を模式的に示
す斜視図、第２図は直線部切断での切断状況を示した断
面図、第３図は切断方向が変化する位置での切断状況を
示した断面図である。
１・・・被切断材、２・・・ノズル、３・・・流線、ｔ
・・・板厚、Ａ・・・切断開始位置、Ｂ・・・切断方法
変化位置。
出願人代理人 佐 藤 −雄Fig. 1 is a perspective view schematically showing an embodiment of the cutting method according to the present invention, Fig. 2 is a cross-sectional view showing the cutting situation when cutting a straight section, and Fig. 3 is a cross-sectional view showing the cutting situation at a position where the cutting direction changes. It is a sectional view showing a cutting situation. 1... Material to be cut, 2... Nozzle, 3... Streamline, t
...Plate thickness, A... Cutting start position, B... Cutting method change position. Applicant's agent Mr. Sato
Claims (1)
が混入された高圧液体噴流を垂直に噴射して被切断材を
切断する方法において、直線部切断では切断速度を被切
断材の板厚の略半分の位置で高圧液体噴流の流線が切断
方向後方に略４５度の角度に曲がる速度とし、切断方向
が非連続的に変化する位置ではノズルの移動を２〜３．
５秒停止することを特徴とする研磨材混入高圧液体噴流
による切断方法。In a method of cutting a workpiece by vertically spraying a high-pressure liquid jet containing an abrasive from a nozzle that moves relatively parallel to the workpiece, the cutting speed is determined by the thickness of the workpiece when cutting a straight section. At approximately half of the position, the streamline of the high-pressure liquid jet bends at an angle of approximately 45 degrees backward in the cutting direction, and at the position where the cutting direction changes discontinuously, the nozzle is moved at a speed of 2 to 3 degrees.
A cutting method using a jet of high-pressure liquid mixed with an abrasive, which is characterized by stopping for 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17068290A JP2831442B2 (en) | 1990-06-28 | 1990-06-28 | Cutting method by high pressure liquid jet mixed with abrasive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17068290A JP2831442B2 (en) | 1990-06-28 | 1990-06-28 | Cutting method by high pressure liquid jet mixed with abrasive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0457674A true JPH0457674A (en) | 1992-02-25 |
| JP2831442B2 JP2831442B2 (en) | 1998-12-02 |
Family
ID=15909442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17068290A Expired - Fee Related JP2831442B2 (en) | 1990-06-28 | 1990-06-28 | Cutting method by high pressure liquid jet mixed with abrasive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2831442B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307639A (en) * | 2007-06-14 | 2008-12-25 | Disco Abrasive Syst Ltd | Water jet machining method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111002391A (en) * | 2019-12-30 | 2020-04-14 | 安徽傲宇数控科技有限公司 | Vertical movable water jet cutting machine |
-
1990
- 1990-06-28 JP JP17068290A patent/JP2831442B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307639A (en) * | 2007-06-14 | 2008-12-25 | Disco Abrasive Syst Ltd | Water jet machining method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2831442B2 (en) | 1998-12-02 |
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|---|---|---|---|
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