EP2242617A2 - Dispositif de découpage par jet d'eau avec dispositif amélioré de maintien des pièces - Google Patents
Dispositif de découpage par jet d'eau avec dispositif amélioré de maintien des piècesInfo
- Publication number
- EP2242617A2 EP2242617A2 EP08864936A EP08864936A EP2242617A2 EP 2242617 A2 EP2242617 A2 EP 2242617A2 EP 08864936 A EP08864936 A EP 08864936A EP 08864936 A EP08864936 A EP 08864936A EP 2242617 A2 EP2242617 A2 EP 2242617A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cut
- plate
- jet
- cutting
- son
- 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 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000009835 boiling Methods 0.000 abstract 2
- 239000002131 composite material Substances 0.000 description 7
- 230000032798 delamination Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
- B26F3/008—Energy dissipating devices therefor, e.g. catchers; Supporting beds therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/364—By fluid blast and/or suction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
- Y10T83/5669—Work clamp
Definitions
- the invention relates to a water jet cutting device with improved device for holding parts.
- the field of the invention is that of cutting materials and in particular composite materials. More specifically, the field of the invention is that of the cutting of these materials by a high-pressure jet. Abrasive water jet cutting is a known and applied method for cutting many materials including composite materials.
- a movable cutting head is equipped with a nozzle which is ejected a water jet of very small diameter (0.1 to 0.5 mm) at a very high speed, and mixed with abrasive particles.
- This type of jet has the ability to traverse any type of material.
- the nozzle is located a few millimeters above the piece to be cut. By moving the head, the water jet cuts the pieces to the desired shape.
- the cutting board is usually placed on a grating over a pool, whose role is to cushion the jet once it has crossed the room and limit noise.
- the stress relaxations inside the cut material can cause a phenomenon of "rolling on itself" of the plate which can also cause collisions with the nozzle .
- a first solution is to cover the plate to be cut by another heavier plate and generally thicker. This other plate then limits the possibilities of floating the cut pieces.
- this solution affects the quality and accuracy of cutting. Indeed, the jet is then more distant parts to cut. As this jet is divergent and loses coherence after a short distance, this distance from the jet causes a variation of dimension and a form of singing against undercut. This solution therefore adversely affects the precision of the cut and the quality of the cut pieces.
- JP2005230994 describes a waterjet cutting process for semiconductors for the production of electronic chips, that is to say very small parts.
- a double-sided polyethylene adhesive film is glued under the plate to be cut. He receives on the other side a fence consisting of "piano wire" with a diameter between 0.1 and 0.5 mm. Then, a single-sided adhesive polyethylene film sticks to the mesh and the first film. The two films thus assembled, with the mesh inside, are placed under the substrate during cutting. It is considered in the jet cutting processes that the upper face is that which is exposed to the jet of water. During cutting, the jet passes through the plate, thereby cutting it into small squares.
- the jet fails to cut the piano strings, especially because it lost energy crossing the plate.
- the cut elements remain attached to each other via the adhesive of the film portions related to the mesh that has not been cut, and can therefore be easily recovered.
- Such a device is difficult to transpose on large parts, given the necessary preparation time, and the fact that the thickness of the parts concerned by the invention is insufficient to significantly reduce the power of the jet
- the abrasive is mixed with the jet by means of a venturi device that sucks the abrasive thanks to the depression created by the high speed passage of the jet in a "gun".
- the procedure for cutting the jet would therefore be as follows: - cutting off the supply of abrasive
- the invention solves these problems by tending a plurality of son, all parallel, above a cutting plate. These wires are located between the outlet of the nozzle delivering the jet of water and the plate to be cut. The tension of these wires is such that it allows:
- the effect of the threads is therefore at least double. On the one hand they maintain the plate. On the other hand they allow the production of micro-fasteners that keep the cut pieces linked together and with the drops of the plate. These micro-fasteners being reduced, and in particular of less thickness than the plate to be cut, they are easily scored manually and without risk of delamination of the cut pieces.
- the invention therefore relates to a water jet cutting device comprising a device for holding a plate of a material to be cut, characterized in that the holding device comprises:
- the wires are stretched in a single direction.
- the tension of the threads allows the water jet to move these threads.
- the tension of the threads is such that for a force of 10 Newton applied to the middle of the thread, it results arrow of 20 mm.
- the son are made of steel.
- the steel used is part of the group consisting of the following elements: - mild steel,
- the wires have a diameter of 0.8 to 1.5 mm.
- one end of a wire is attached to a reel, the other end being attached to a tensioning device.
- the distance between two adjacent wires is a function of the average size of the pieces to be cut.
- Figure 1 a side view of a device according to the invention
- Figure 2 a view of the device according to the invention from a plane parallel to the son and located between the son and the nozzle producing the water jet;
- Figure 3 a side view of a plate cut at a micro-attachment.
- Figure 4 a top view of a plate cut at a micro-fastener.
- Figure 1 shows a tray 101 on the bottom 102 which rests a grating 103 whose height is less than the depth of the tray.
- the grating 103 is formed of at least a plurality of vertical rods whose vertices define a plane on which is placed a plate 104 to be cut.
- the tray 101 is filled with a liquid 105, for example water.
- FIG. 1 also shows a nozzle 106, the end of a device for projecting water at high pressure along a jet 107.
- Jet 107 comprises, as previously described, water and an abrasive element.
- the tank 101 is filled with a liquid, for example water, whose role is to dampen the jet and reduce the noise due to its impact against an obstacle.
- the ferry 101 is also called the pool.
- the tray 101 is filled with the liquid 105 to a level slightly lower than the height of the grating 103.
- the plate 104 is cut by the displacement of the jet 107 above the plate 104. This displacement draws a panoply of parts that must be produced from the plate 104.
- Figure 1 shows a wire 108 stretched on either side of the edges of the tray 101.
- the son can be stretched by hand between two cleats.
- the son are unwound and tensioned by a tensor device.
- This tensor device comprises a reel 109 composed of a coil and a brake 1 10.
- This tensor device also comprises a control electronics, which makes it possible to block the reel when the required length of wire has been unwound.
- the reel 109 is fixed on one of the edges of the tray 101.
- the device according to the invention comprises a device 1 1 1 for pulling the thread 108.
- the device 11 1 comprises means for driving the wire 108 to unwind the reel 109.
- the device 1 1 1 comprises for example two rotary rollers, at least one is driven by a motor, these two rollers pinching the wire 108 to drive .
- the motor is then driven by the same control logic as the brake 1 10.
- the combined actions of the motor and the brake make it possible to control the voltage of the wire 108.
- the motor can in this case be shared between several devices reels.
- the wires are preferably made of steel. In a variant of the invention, they consist of mild steel or austenitic stainless steel.
- the diameter of the wires is in the range defined by the following values: 0.8 mm to 1.5 mm. This diameter depends on the thickness of the plate to be cut.
- Figure 1 also shows that the wire 108 is stretched at a height between the nozzle 106 and the plate 104, so as to intercept the jet 107 when the nozzle 106 passes over the wire 108. All the wires are stretched at the same height relative to the plate 104. The effects of this interception will be described later.
- Figure 2 shows the plate 104 placed on the grating 103, seen from above.
- FIG. 2 also shows the wire 108 and another wire 201.
- the wires 108 and 201 are part of a plurality of wires stretched over the whole of the wire. plate surface that the nozzle 106 is able to explore.
- the son of the plurality of son are all stretched in the same direction, at the same height, they have identical mechanical characteristics and they are stretched to the same tension. In one embodiment of the invention, this voltage is such that for a force of 10 Newton applied to the middle of the wire, this force produces an arrow of 20 mm on the wire.
- the son of the plurality of son are spaced from each other by a distance corresponding to an average dimension of the pieces to be cut.
- the distance between two wires is slightly smaller than the largest dimension of the smaller piece to be cut.
- the number of yarns of the plurality depends on the dimensions of the working surface of the jet 107. More specifically, the number of yarns of the plurality of yarns depends on the distance that the nozzle 106 can traverse perpendicularly to the direction in which they are stretched. son. In a variant of the invention, this distance is standardized and included in a range of 5 cm to 50 cm.
- FIG. 2 also shows a cut-off 202 made in the plate 104 through the passage of the jet 107.
- FIG. 2 again shows that the wires 108 and 201 were attacked by the jet 107, which left impressions 203 and 204 in the wires 108 and 201. These fingerprints correspond to tearing of material due to the action of the jet 107. However, the son of the plurality of son are not severed.
- the wire tends to move away from the jet.
- the wire then vibrates in the plane of the plate, at a relatively low frequency (a few Hertz), around its position of equilibrium.
- FIG. 3 shows a local side view of the plate 104 at the intersection of the cutoff 202 and the wire 108.
- FIG. 3 shows a micro-fastener 301 connecting the two edges of the cutoff 202.
- This microattach is located on the lower part of the plate 104.
- the micro-attachment is thinner in its center than on its edges which are attached to the plate 104. This feature facilitates the breaking of the micro-fastener while by preventing a possible delamination of the cut piece at the level of the micro-fastener.
- a micro-fastener also has the following characteristics: a length L equal to the cutting width (diameter of the water jet) between 0.2 and 0.5 mm depending on the characteristics of the jet;
- a width D equal to approximately the diameter of the wire, between 0.6 and 1 times this diameter approximately;
- the thickness of the micro-fastener will be about 1.5 mm.
- FIG. 4 is a top view of the plate 104 at the same level as in FIG. 3.
- FIG. 4 illustrates the characteristics that have just been described for the micro-fastener 301.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Water Treatment By Sorption (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0760158A FR2925377B1 (fr) | 2007-12-20 | 2007-12-20 | Dispositif de decoupage par jet d'eau avec dispositif ameliore de maintien des pieces |
| PCT/FR2008/052337 WO2009081037A2 (fr) | 2007-12-20 | 2008-12-17 | Dispositif de découpage par jet d'eau avec dispositif amélioré de maintien des pièces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2242617A2 true EP2242617A2 (fr) | 2010-10-27 |
| EP2242617B1 EP2242617B1 (fr) | 2011-05-04 |
Family
ID=39590363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20080864936 Not-in-force EP2242617B1 (fr) | 2007-12-20 | 2008-12-17 | Dispositif de découpage par jet d'eau avec dispositif amélioré de maintien des pièces |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8528453B2 (fr) |
| EP (1) | EP2242617B1 (fr) |
| AT (1) | ATE507933T1 (fr) |
| DE (1) | DE602008006781D1 (fr) |
| FR (1) | FR2925377B1 (fr) |
| WO (1) | WO2009081037A2 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7237341B2 (en) | 2003-10-10 | 2007-07-03 | The Stanley Works | Studfinder and laser line layout tool |
| WO2012098272A1 (fr) | 2011-01-19 | 2012-07-26 | Emilio Mateu Sentamans | Dispositif multifonction de découpe par jet d'eau à plusieurs bras |
| FR3044575B1 (fr) * | 2015-12-08 | 2018-04-20 | Airbus Group Sas | Methode de controle de la fabrication de pieces en materiaux composites et dispositif pour sa mise en oeuvre |
| CA3008735C (fr) * | 2017-06-19 | 2025-08-05 | Nuwave Industries Inc. | Outil de coupe a jet d'eau |
| US11072084B2 (en) | 2018-01-08 | 2021-07-27 | Janesville Acoustics, a Unit of Jason Incorporated | Vacuum diverter assembly |
| US12240080B2 (en) * | 2021-07-12 | 2025-03-04 | Aurora Flight Sciences Corporation | Waterjet cutting apparatus and related methods |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2994314A (en) * | 1958-08-22 | 1961-08-01 | Ty Sa Man Machine Company | Stone cutting apparatus |
| GB1191154A (en) * | 1966-07-27 | 1970-05-06 | Wheelabrator Corp | Machine and Method for Surface Treatment of Large Articles |
| US4116097A (en) * | 1977-09-06 | 1978-09-26 | Usm Corporation | Cutting machine incorporating means for transferring cut parts and scrap |
| US4672172A (en) * | 1985-12-19 | 1987-06-09 | Gerber Garment Technology, Inc. | Workpiece supporting bed for laser cutter |
| US5931178A (en) * | 1996-03-19 | 1999-08-03 | Design Systems, Inc. | High-speed water jet blocker |
| US7464630B2 (en) * | 2001-08-27 | 2008-12-16 | Flow International Corporation | Apparatus for generating and manipulating a high-pressure fluid jet |
| AT412197B (de) * | 2002-11-22 | 2004-11-25 | Lisec Peter | Vorrichtung zum bearbeiten von werkstoffplatten |
| JP2005230994A (ja) * | 2004-02-20 | 2005-09-02 | Disco Abrasive Syst Ltd | ウォータージェット加工方法および被加工物の保護部材 |
| CN101045287A (zh) * | 2006-12-15 | 2007-10-03 | 西安飞机工业(集团)有限责任公司 | 一种双曲率壁板预应力喷丸成形技术 |
| US20100064870A1 (en) * | 2008-09-18 | 2010-03-18 | Omax Corporation | Fluid jet cutting system with bed slat caps |
-
2007
- 2007-12-20 FR FR0760158A patent/FR2925377B1/fr not_active Expired - Fee Related
-
2008
- 2008-12-17 AT AT08864936T patent/ATE507933T1/de not_active IP Right Cessation
- 2008-12-17 EP EP20080864936 patent/EP2242617B1/fr not_active Not-in-force
- 2008-12-17 US US12/809,409 patent/US8528453B2/en not_active Expired - Fee Related
- 2008-12-17 DE DE200860006781 patent/DE602008006781D1/de active Active
- 2008-12-17 WO PCT/FR2008/052337 patent/WO2009081037A2/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009081037A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2925377A1 (fr) | 2009-06-26 |
| DE602008006781D1 (de) | 2011-06-16 |
| ATE507933T1 (de) | 2011-05-15 |
| WO2009081037A2 (fr) | 2009-07-02 |
| FR2925377B1 (fr) | 2009-12-25 |
| EP2242617B1 (fr) | 2011-05-04 |
| US20110005361A1 (en) | 2011-01-13 |
| US8528453B2 (en) | 2013-09-10 |
| WO2009081037A3 (fr) | 2009-09-03 |
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