EP0140870A1 - Dispositif de coupe par jet de fluide - Google Patents
Dispositif de coupe par jet de fluide Download PDFInfo
- Publication number
- EP0140870A1 EP0140870A1 EP19840890163 EP84890163A EP0140870A1 EP 0140870 A1 EP0140870 A1 EP 0140870A1 EP 19840890163 EP19840890163 EP 19840890163 EP 84890163 A EP84890163 A EP 84890163A EP 0140870 A1 EP0140870 A1 EP 0140870A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting device
- liquid jet
- jet cutting
- feed drive
- feed
- 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
Images
Classifications
-
- 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
Definitions
- projections or the like which cooperate with the template edge area can be provided on the nozzle head, so that a kind of "hooking" or “support” of the nozzle head on a guide, for example on the edge area of a template, can take place during the feed.
- the nozzle head When cutting is the Press the nozzle head as snugly as possible against a guide line or surface, with uniform feed between the outer surface of the nozzle head and the guide surface, while overcoming the sliding friction.
- the area of the nozzle head that is to be pressed against the guide surface and at the same time pushed along it is advantageously cylindrical, it requires relatively great skill and constant attention to achieve uniform feed and thus a precise cut. It can still lead to feed inhibitions, sliding when the contact pressure decreases and the like. come. A precise adjustment of the feed rate to the material to be cut and the degree of difficulty of the curve itself cannot be achieved. Similar problems as a result of sliding friction, as has been found, cannot be prevented even with automatic cutters with a mechanical contour guide template.
- the object of the invention is to provide such a liquid jet cutting device, in which practically only manual or automatic pressing of the nozzle head or a guide piece connected to it against a guide line, guide surface, for example, a template or the like is to be provided during the Feed along a cutting curve is no longer carried out with sliding friction.
- the invention thus relates to a liquid jet cutting device with a cutting guide device with at least one cutting nozzle head with jet nozzle which can be moved and aligned at least one-dimensionally and can be supplied with cutting jet medium via feed (s), which is characterized in that a, in particular hand-held, preferably Nozzle head connected to at least one manipulation element with a nozzle by means of a cutting contour guiding device connected to it, with at least one guiding line or surface designed to roll or roll against a line corresponding to the contour to be cut and against this line or surface, preferably by hand, which can be pressed on and is moved by a feed drive element which is driven in terms of its speed, preferably by means of a manipulation element, by a drive unit.
- a particular advantage of the device according to the invention is that it is only necessary to ensure that a guide device for the nozzle head is pressed firmly against the guide surface of a template, rail, link or the like, while the feed, now with rolling friction, takes place by means of a feed drive element .
- the feed element which is essentially designed as a driven roller, along a curve with practically no surface extension, for example an edge of a template or a line of contact between an approximately barrel-shaped template edge and of the feed roller, " .
- the guide surface of the template and the feed drive element can also have a cooperating contour.
- the template itself can be bypassed outside or inside, it can also be formed only with a guide rail or the like that encompasses its edge region.
- the template is arranged substantially parallel to the item to be cut, and it is often convenient to use the template directly to hold the item to be cut, it then lies directly on it.
- the device according to the invention can be designed such that the feed drive element is arranged on a carrier which is in a mechanically rigid, possibly detachable connection with the nozzle head and therefore carries out every movement precisely with it.
- the feed drive element of the contour guide device connected to the nozzle head also coincides with the axis of the off flow channel of the jet nozzle is formed substantially parallel axis.
- the guide surface is designed as a prism surface of a template, preferably of the same length and essentially corresponding to the basic projection of its course, and the feed drive element of the nozzle head with an essentially cylindrical drive surface .
- the feed drive element has at least one circumferential projection, which extends radially away from its axis and drive surface, the radial surface of which, in cooperation with the feed drive surface, is designed to cooperate with a guide surface and an edge region of the upper side of a template, can also be achieved in addition to accurate guidance be that the operator can support the nozzle head with the help of the aforementioned projection simultaneously with the pressure on the guide surface on the top of a template in the edge region, so that a constant distance between the jet outlet opening of the nozzle and the material to be cut and thus the cut quality is achieved becomes.
- the feed drive surface and the radial surface of the support projection essentially enclose an angle of 90 ° with one another.
- the feed drive element is approximately coil-shaped with two of its axis and drive surface is formed extending projections and these substantially encompass the edge region of a guide template.
- the bottom of the template does not lie directly against the workpiece to be cut, at least in the area of its edge.
- the edge area is also gripped behind on the underside by means of the second radial projection.
- the radial extension of this projection is advantageously made smaller than the above-mentioned projection provided for support on the top of the template.
- the generators move radially from the axis and feed Drive surface extending away surface of at least one projection enclose an angle ⁇ of more than 90 ° with the generatrix of the drive surface of the feed drive member.
- Faults in the rolling motion of the feed drive element can be avoided if they are on the The top of the template and, if applicable, also the underside of the projection or the projections on the feed drive element which have and which also rotate and also rotate radially extending surface (s) have little resistance, which can be ensured cheaply, that the surface of at least one of the projections which extends radially away from the axis and the feed drive surface is provided with a friction-reducing coating or intermediate layer, for example made of fluorine-containing polymer.
- the feed drive surface of the feed drive element is provided with a friction-increasing coating or intermediate layer, e.g. made of rubber.
- a cylindrical drive drive surface with the channel of the cutting nozzle coaxially mounted on the nozzle head feed drive member with a passage opening for the cutting jet with a on the feed pipe or on a pipe surrounding it, preferably is connected via roller bearings, rotatably mounted sleeve.
- this type of construction enables the nozzle head, which is connected to manipulation handles for guiding and pressing, to be able to absorb the forces without deformation and endangering the collimation tube, even at relatively high contact pressures.
- the sleeve of the feed drive member preferably has a force transmission element, preferably a gearwheel, which cooperates with a further force transmission element, preferably a gearwheel of a drive unit detachable, connected.
- the drive unit can be a space-saving low-voltage DC motor of smaller diameter.
- hydraulic or pneumatic motors or the like can also be used.
- the advantage of an electric motor is its precise controllability. It also offers the possibility of keeping its speed and thus the feed rate constant even when the contact pressure of the nozzle head changes to a template, so that high cutting quality and economical operation can be achieved.
- a form of training which is particularly advantageous for hand-held devices is provided if the rotational speed causing the rolling movement speed of the feed drive element of the nozzle head on a guide line or surface can be controlled by the drive unit thereof by means of a speed control device which can be adjusted with a rotatable handle.
- one of the two manipulation elements i.e. a handle that serves to mechanically guide the nozzle head
- the operator can, by simply turning the handle, achieve a feed speed that is favorable in terms of material and cutting contour set directly while operating the device without additional manipulation.
- a feed speed that can be precisely adjusted to the cutting curve is thus achieved in an ergonomically advantageous manner.
- the speed control device of the drive unit for the feed drive element has a device for keeping constant a speed set in each case by means of a manipulation element on the control device. Due to the achievable independence of the feed rate from the contact pressure on a guide surface, the optimally set feed rate can be kept constant and the greatest time economy can be achieved, even if there are strongly changing contact conditions, eg with complicated template shapes.
- FIG. 1 shows an embodiment of a hand-operated liquid jet cutting device according to the invention in an oblique overall view
- FIGS. 2 and 3 partially cut front and side view of a three-dimensionally movable and directional nozzle head equipped with nozzle-coaxial feed drive element and manipulation handles
- FIG 4 shows a detailed view of a feed drive element with the edge region of a template
- FIG. 5 schematically shows a preferred device for controlling the speed of a motor for the feed drive element with a device for keeping the rotational speed constant.
- the liquid jet hand-held cutting device shown in FIG. 1 has a frame carrying a high-pressure armature 19 and control box 16 with an upright 17 fastened to a movable base plate 21 with pivotable articulated arms 4 with a balance holder 3, with a vertical guide 2 at the free end of the arm 4 via three-dimensional guide 25 with the liquid medium supplied via high pressure line 1
- Nozzle head 5 with guide handles 6, and on and off buttons 7 is connected.
- a swiveling cutting jet catcher 8 by means of a pneumatic cylinder 14, from which the processed cutting medium is discharged from the suction pump 22 into the collecting container 10 with an overflow 11 via a suction line 9.
- the drive for the feed drive element 101 of the nozzle head 5 takes place along a template edge, not shown, via gearwheel 23 on gearwheel 24, which is mounted on a rotatable sleeve which surrounds the nozzle head front part and carries the drive element 101.
- FIGS. 2 and 3 it is shown how, in the case of a cutting contour guiding device 100 provided according to the invention, in the nozzle head 70 of the cutting device via a connecting piece 16 through its channel 161, the high pressure medium is fed to the channel 31 of the collimation tube 3 and the path of the medium is via that of the nozzle holder 1 held jet nozzle stone 11, for example made of sapphire, continues.
- a rotating sleeve 4 is rotatably mounted via a first roller bearing 6 and a second roller bearing designed as a needle bearing 5, which at its lower end springs back into the essential part of the feed Drive device 100 forming cylindrical feed drive element 101 passes over with drive surface 103, which, rolling along a template guide surface 61 of a template 60, ensures the movement of the nozzle head 70 along the template edge.
- the jet medium emerging from the channel 110 from the nozzle 11 at high speed rushes through the channel 108 located in the feed drive element 101 without touching the wall, then the workpiece 80 to be cut is formed by making a cut and is received by the sleeve 37 of a jet catcher 38 and strikes it Chamber 35 arranged, residual radiation energy ver non-existent hard metal piece 41, which can be interchangeably arranged by means of a union nut 36.
- the used blasting medium is suctioned off via a suction line 42 which is detachably fastened by means of a hand screw 29 and which is also a holder for the jet catcher.
- the aforementioned sleeve 4 with the actual feed drive member 101 is driven via a gear 9 which is detachably arranged on it and which meshes with gear 8 of a direct current motor 12 with an electric tachometer generator 51, preferably in a speed-controlled manner.
- the nozzle head 70 is connected via a mounting piece 71 to two manipulation handles 47, 48 for guidance along a template edge, which handles each have switches 24 for moving the entire undercarriage back and forth, switches 25 for switching the direction of rotation of the motor 12 and safety push buttons 26, both at the same time must be pressed to convey the blasting medium.
- one of the handles 47 is designed to be rotatable and resettable and is connected to a rotary potentiometer 27, by means of which the speed of the motor 12 and thus the speed of the drive element 101 can be regulated via a feed control device 200.
- the control device 200 has a controller with a potentiometer 205, by means of which the preselection of a maximum feed rate that is precisely matched to a particular material to be cut can be carried out, i.e. that in the range of the rotatability of the handle 47, only a feed up to a maximum of the set maximum feed can take place. This prevents an unintentional "pulling over" of a cutting speed compatible with the material to be cut and the cutting quality increases further.
- a tachometer generator 51 and electric motor 12, which convert the engine speed into electronic measured variable, are connected to the control 200 via lines 201 and 202 che in turn, depending on the angular position of handle 47 and potentiometer 27, determines the motor speed and, based on an electrical variable supplied by tachometer generator 51, in the event of a change in the load and thus speed change of the motor, the respectively set speed is restored.
- FIG. 4 shows part of the above-mentioned sleeve 4, which is connected to the feed drive element 101 and forms a support projection 105 and is coaxially rotatably mounted on a nozzle head.
- the radial drive surface 104 optionally equipped with a friction-reducing coating, extends from the feed drive surface 103, optionally provided with a rubber friction lining.
- a dashed line indicates a lower, radially less far-extending second projection 105a with radial surface 104a.
- the radial surfaces 104 and possibly 104a mentioned and the drive surface 103 of the feed drive element 101 are formed together with the cutting contour guide curve 61, top side 62 and optionally also underside of the edge region 60a of a template 60 arranged above the material to be cut 80 and possibly holding it.
- C1 denotes the angle which the generatrix of the radial surface 104, 104a enclose with that of the drive surface 103 of the feed drive element 101.
- Fig. 5 shows a preferred embodiment for a speed and thus feed speed control or control device with constant speed of the feed drive unit.
- control device 2 which is supplied by a direct current source 3 for a nozzle head feed drive motor M, after passing through the stabilization S by means of mentioned rotatable handle adjustable rotary potentiometer Rl tapped a voltage corresponding to a desired motor speed and thus nozzle head feed speed, whereby the basic power supply to motor M takes place.
- a difference between the speed or corresponding voltage setpoint and actual value occurring when the motor M is loaded during the nozzle head feed is fed via amplifier V3 to a pulse width modulator P coupled to a further amplifier V4, from which the power transistors corresponding to the said difference are output Tl, T2 are controlled, which in turn change the amount of current supplied to the motor M until the actual voltage and setpoint value supplied by the tachometer generator G match each other according to the specification of the potentiometer R1 (corresponding to 27 in FIGS. 2, 3) on the rotary handle.
- the potentiometer R1 corresponding to 27 in FIGS. 2, 3
- the potentiometer R6 (corresponding to 205 in Fig. 2) is used to individually adjust the maximum speed of the motor M and thus a maximum feed, so that within the entire tap range of the potentiometer R1 or the full angle of rotation of the rotary handle only feed speeds to can only be set to the maximum limit.
- the circuit briefly explained here is characterized by high robustness, flexibility, stability and quick responsiveness.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT3175/83 | 1983-09-06 | ||
AT0317583A AT379103B (de) | 1983-09-06 | 1983-09-06 | Fluessigstrahl-schneidvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0140870A1 true EP0140870A1 (fr) | 1985-05-08 |
EP0140870B1 EP0140870B1 (fr) | 1987-11-11 |
Family
ID=3546500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19840890163 Expired EP0140870B1 (fr) | 1983-09-06 | 1984-08-30 | Dispositif de coupe par jet de fluide |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0140870B1 (fr) |
AT (1) | AT379103B (fr) |
DE (1) | DE3467322D1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827679A (en) * | 1987-11-24 | 1989-05-09 | Ltv Aerospace & Defense Company | Fluid jet cutting system with self orienting catcher |
FR2632554A1 (fr) * | 1988-06-09 | 1989-12-15 | Aerospatiale | Machine d'usinage |
WO2012146720A1 (fr) | 2011-04-29 | 2012-11-01 | Peira Bvba | Système de vision stéréoscopique |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2813499A1 (de) * | 1977-10-07 | 1979-04-12 | Gerber Garment Technology Inc | Fluidstrahl-vorrichtung zum schneiden von flachmaterial |
DE2935828A1 (de) * | 1978-11-13 | 1980-05-14 | Gerber Garment Technology Inc | Fluidstrahl-schneidvorrichtung mit einem selbstheilenden bett |
DE2729815B2 (de) * | 1975-03-17 | 1980-07-24 | Miyakita, Ichiro, Toyonaka (Japan) | Vorrichtung zum Schneiden einer Blattmaterialbahn |
-
1983
- 1983-09-06 AT AT0317583A patent/AT379103B/de not_active IP Right Cessation
-
1984
- 1984-08-30 EP EP19840890163 patent/EP0140870B1/fr not_active Expired
- 1984-08-30 DE DE8484890163T patent/DE3467322D1/de not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2729815B2 (de) * | 1975-03-17 | 1980-07-24 | Miyakita, Ichiro, Toyonaka (Japan) | Vorrichtung zum Schneiden einer Blattmaterialbahn |
DE2813499A1 (de) * | 1977-10-07 | 1979-04-12 | Gerber Garment Technology Inc | Fluidstrahl-vorrichtung zum schneiden von flachmaterial |
DE2935828A1 (de) * | 1978-11-13 | 1980-05-14 | Gerber Garment Technology Inc | Fluidstrahl-schneidvorrichtung mit einem selbstheilenden bett |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4827679A (en) * | 1987-11-24 | 1989-05-09 | Ltv Aerospace & Defense Company | Fluid jet cutting system with self orienting catcher |
FR2632554A1 (fr) * | 1988-06-09 | 1989-12-15 | Aerospatiale | Machine d'usinage |
WO2012146720A1 (fr) | 2011-04-29 | 2012-11-01 | Peira Bvba | Système de vision stéréoscopique |
Also Published As
Publication number | Publication date |
---|---|
DE3467322D1 (en) | 1987-12-17 |
ATA317583A (de) | 1985-04-15 |
EP0140870B1 (fr) | 1987-11-11 |
AT379103B (de) | 1985-11-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19911005A1 (de) | Verfahren zur Steuerung eines Scheibenmikrotoms | |
EP0399281A2 (fr) | Dispositif de remplissage pour le remplissage automatique de la matrice de presses à poudre | |
DE3517194A1 (de) | Verfahren und vorrichtung zum bearbeiten von kanten von plattenfoermigen werkstuecken | |
DE2421659C2 (de) | Schleifmaschine zum Bearbeiten von hohlzylindrischen Werkstücken mit von der Kreisform abweichendem Querschnitt | |
EP0140870B1 (fr) | Dispositif de coupe par jet de fluide | |
DE3424258A1 (de) | Vorrichtung zum kantenschleifen von glasscheiben | |
DE610866C (de) | Vorrichtung zum Abschleifen geschweisster Schienenstoesse | |
DE102005006242A1 (de) | Schleifmaschine und Verfahren zum Einrichten eines Werkstückträgers an einer Schleifmaschine | |
DE3021359A1 (de) | Verfahren und vorrichtung zum bearbeiten, vorzugsweise fraesen oder schleifen von kanten und radien an werkstuecken in einem arbeitsgang | |
DE3218564C2 (de) | Vorrichtung zum handgesteuerten Zuschneiden | |
DE2712029B2 (de) | Nockenschleifmaschine | |
DE2214033A1 (de) | Markierungsvorrichtung | |
DD255296A1 (de) | Verzahnmaschine mit cnc-steuerung zur herstellung von kegelraedern | |
DE2806056C3 (de) | Einrichtung zur Regelung der Seitenlage eines sich über Rollen bewegenden Objektes | |
EP0358928A2 (fr) | Machine-outil | |
DE2452233A1 (de) | Konturenschleifmaschine | |
DE2505397A1 (de) | Vorrichtung zum spanabhebenden bearbeiten von zahnraedern | |
DE2752709A1 (de) | Farbbeschichtungsmaschine | |
DE2449772C3 (de) | Verfahren, Werkzeug und Vorrichtung zum Bearbeiten der Wicklungsnuten von Generatorläufern | |
DE2546284C2 (de) | Kopiervorrichtung für eine Drückmaschine | |
DE2158191C3 (de) | Vorrichtung zum Entgraten von geraden Blechbändern | |
DE4131264C1 (fr) | ||
DE1577514C3 (de) | Vorrichtung zum Anbringen von Dekorschliffen an Hohlgläsern | |
EP0384136A2 (fr) | Dispositif automatique pour le traitement pas à pas d'une bande de matériau plat | |
DE3316355A1 (de) | Vorrichtung zum beschriften von werkstuecken |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): BE CH DE FR GB IT LI NL SE |
|
17P | Request for examination filed |
Effective date: 19851024 |
|
17Q | First examination report despatched |
Effective date: 19870120 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI NL SE |
|
ITF | It: translation for a ep patent filed |
Owner name: DE DOMINICIS & MAYER S.R.L. |
|
REF | Corresponds to: |
Ref document number: 3467322 Country of ref document: DE Date of ref document: 19871217 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19880830 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19880831 Ref country code: LI Effective date: 19880831 Ref country code: CH Effective date: 19880831 Ref country code: BE Effective date: 19880831 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: VEREINIGTE EDELSTAHLWERKE A.G. VEW Effective date: 19880831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19890301 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890428 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19890503 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
EUG | Se: european patent has lapsed |
Ref document number: 84890163.3 Effective date: 19890510 |