Abstract: In a tool for cutting up coke in containers, including a housing mounted on a drill stem in the operating condition, and wherein at least one cutting nozzle for cutting and a boring nozzle for boring coke by means of a water jet, and a switching apparatus for controlling the feeding of pressurized water flowing through the drill stem and the housing are arranged, wherein the switching apparatus for switching the tool includes a linearly moveable switching element, a driving apparatus and a control apparatus, which is rotatable about the longitudinal axis of the housing as a function of a change of the water pressure by the driving apparatus to switch a valve to distribute the water and to pass it on, wherein depending on each angular position of the control apparatus the flow path of the water to the boring nozzle or the flow path to the cutting nozzle is free or obstructed, the switching apparatus is arranged in the housing of the tool above the area in which a separation of the supply path of the water is p

Abstract: In a tool for cutting up coke, comprising a housing mounted on a drill stem in the operating condition, and wherein at least one cutting nozzle for cutting and one boring nozzle for boring coke by means of a water jet, and a switchable valve means arranged in a flow-through channel for alternatively feeding the water to the flow channels in a flow body for the paths to the cutting and boring nozzles, and a switching apparatus manually or water-pressure-controlled operable at switching pressure of the water within the flow-through channel, for switching the valve means, are arranged, comprising a distribution apparatus rotatably supported above the flow body, with at least one valve body for closing off at least one opening of the flow channels, wherein depending on each angular position of the distribution apparatus with respect to the flow body, the flow path of the water to the boring nozzle or the flow path to the cutting nozzle is free or obstructed, for easier rotation of the distribution apparatus,

Abstract: The present invention provides a system 1A for supplying processing water 3, which is used in the operation of processing a target object with a highly pressurized jet of processing water 3 containing an abrasive, including: a tank 2 for storing the processing water 3, having a lower portion substantially tapering downwards; a supply pipe 5 for supplying the processing water 3 to the tank 2; a delivery pipe 8 having an opening 9 located inside the tank 2; a pressure mechanism 7 located outside the tank 2, for pressurizing the processing water 3; and a suction port 10 provided in the side surface of the delivery pipe 8. The processing water 3 in the tank 2 is stratified into a deposition portion 4A, which is a portion where the abrasive is deposited, and a clear-water portion 4W, which is a portion other than the deposition portion 4A and formed by clear water substantially free from the abrasive.

Abstract: The invention relates to a coupling device (24) used for producing a flow path between the tank (6) of a water vapor cutting device (1) and a liquid-filled cartridge (25), wherein said coupling device (24) comprises a housing (29) provided with a receiving area (30) which is formed therein, used for mounting the cartridge (25) on said housing (29) and which comprises a channel (39) provided with an input orifice (40) fluidically connectable to the cartridge (25) and to an output opening (41) which is also fluidically connectable to an external surrounding area, for example to the tank (6).

Abstract: The invention relates to a system for cutting food products for packing purposes, comprising an area at which large blocks of the products are supplied, followed by a cutting zone in which the blocks are divided into flat slices which are distributed through parallel cutting channels, in which the slices are divided into pieces which are in turn cut into a quadrangular portion which is conveyed to a packing chain by means of an unloading device.

Abstract: A water jet assembly and method of use comprising a tank with cutting fluid, fuel and oxidizer lines, and a tank discharge lines. In operation, the tank is filled with oxidizer; the oxidizer line is closed and cutting fluid is supplied compressing the oxidizer. When the fluid reaches a level, the fluid line is closed and fuel is injected. A spark generator ignites the fuel/oxidizer mixture thereby raising the tank pressure. As the pressure rises, a low pressure valve simultaneously closes at a prescribed level. The vent line and a discharge to a nozzle are opened thereby, forming a gas bubble. When the bubble reaches a desired size and pressure drops below a level, the vent closes, allowing combustion expansion to force fluid through the nozzle to form a cutting jet. The bubble allows the jet to retain coherence between the nozzle and a cutting surface.

Abstract: An apparatus for generating and manipulating a high-pressure fluid jet includes an end effector assembly coupled to a manipulator that imparts motion to the end effector. The end effector assembly includes a cutting head coupled to a source of high-pressure fluid and to a source of abrasive. A motion assembly is coupled to the cutting head via a clamp positioned around the cutting head. A nozzle body assembly is removably coupled to the cutting head assembly, which may be separated from the cutting head assembly to allow access to the orifice, without removing the cutting head assembly from the clamp. The clamp has a quick release mechanism and an alignment member. The motion assembly includes two motors coupled together to form a gimbal wrist, each motor having a horizontal axis of rotation. The two axes of rotation are perpendicular to each other, but are not necessarily aligned with the manipulator's axes of motion.

Abstract: A method and apparatus to fabricate micro-holes on insulators without forming coarse edges on the circumference of the holes includes a protection layer to cover the surface of a targeted object made from an insulator. The protection layer has an opening for hole drilling to receive a solution capable of dissolving the insulator and ejected through a nozzle. The solution hits the surface of the targeted object at a pressure between 5×10?2 N/cm2 and 20×10?2 N/cm2. The solution ejected through the nozzle forms particles at diameters between 20 ?m and 400 ?m that are smaller than the opening for hole drilling. The hole can be formed on the targeted object by continuously hitting of the solution.

Abstract: A planar robot for cutting products, such as pieces of meat. The product is displaced along a conveyor or positioned onto a working table and is cut by a tool, preferably a water jet. The tool is held by a pair of arms. The arms have first extremities pivotally mounted on mobile bases. The arms also have second extremities pivotally connected to each other. An actuator displaces each of the mobile bases in order to control the position of the cutting tool in a plane above the conveyor or table.

Abstract: Universal cutting assembly for rotary shear, pressure or blade cutting machines of different sheet materials, of the type comprising a fixed, upper support body (T), a disc-holder unit (U) connected to said support body so as to be able to rotate by at least 180° along a vertical axis, a support flange (F) for a cutting disc (D) housed in the disc-holder unit (U). Flange (F) is subject to a perpendicular displacement to the cutting surface for moving disc (D) closer to/away from the cutting area, driven by the action of a pressurised fluid on first piston means (3), and by a displacement parallel to the cutting surface for positioning the disc (D) with respect to a counterdisc arranged below the cutting surface, driven by the action of a pressurised fluid on second piston means (17). The disc-holder unit (U) comprises an automatic device for stopping the cutting disc (D) in a rest position, which device is actuated by respective piston means in fluid connection with said second piston means.

Abstract: An outer edge of a protective tape projected from a semiconductor wafer is fixed and held by a tape holding section. In the condition, a part of the projected protective tape is caught and supported with a tape supporting section with a face having lower adhesive property provided in the outside of the traveling groove for the cutter. Furthermore, the part of the protective tape having the outer edge fixed and held with the tape holding section is compulsorily deformed and inserted into a depression provided between the tape holding section and the tape supporting section. Thereby, the part of the protective tape located in a traveling groove for the cutter is tensioned outward.

Abstract: An apparatus and method for cutting and threading a sheet of material is described. The apparatus can facilitate the transfer of a sheet from a sheet forming machine to a processing machine, and can halt the feeding of sheet material to the processing machine. When the processing machine is ready to receive more sheet material, the apparatus cuts the sheet and feeds the newly formed sheet to the processing machine.

Abstract: A device for working of glass panes (1) has a support (5) for the glass panes (1) and a nozzle (2) from which a water jet emerges for cutting the glass panes (1). The nozzle (2) can be moved on a guide (8) parallel to the plane of the support (5). The tool (12) for working of the cut edges of the material plates (1) can likewise be moved on the guide (8) of the nozzle (2) and is preferably mounted on the same carriage (9) which can be moved on the guide (8), as the nozzle (2). This simplifies not only the technical structure of the device, but also shortens the working time, since the glass pane (1) need not be transported to another device for finishing. Moreover, essentially the same control program as for the water jet cutting can be used for finishing.

Abstract: A method for drilling or cutting a pin (31) surrounded by solid material (32) includes the use of a water jet tool (10) having a nozzle (11) that is arranged at an angle with respect to a main body (12) of the water jet tool (10). The water jet is directed over a portion of the surface of the pin (31), and removes that portion thereby fragmenting the pin (31). In order to minimise damage to the surrounding material, the portions removed touches the interface between the pin and the surrounding solid material at a minimal number of points and over a minimal extent of the interface. The method is applicable in particular to the removal of pins (31) used in a press-fit for the securing of blades (3) on a turbine rotor (1). The method facilitates “in situ” removal of pins within a confined space in a short time and at reduced cost.

Abstract: A cutting- and creasing-wheel assembly according to the invention comprises a cutting tool, such as a circular disc (1) having a continuous or a serrated cutting edge (2). The disc is rotatable and supported between a pair of rotatable creasing-wheel halves (3 and 4), the creasing-wheel halves being of equal radial dimension. The disc is controllable for movement between a non-operative position wherein said cutting edge is withdrawn radially inside the outer peripheries (5) of the creasing-wheel halves, and an operative position wherein the cutting edge (2) is projecting radially outside said peripheries (5). The method of slitting a corrugated or otherwise compressible material involves the provision and control of a cutting tool, preferably a circular disc having a continuous or serrated cutting edge. The disc is arranged to be rotatable and movably supported between a pair of rotatable creasing-wheel halves of equal radial dimension in a cutting- and creasing wheel assembly.

Abstract: A fluid jet apparatus includes a housing defining a propellant cavity, a fluid cavity, and a passage through the housing in fluid communication with the fluid cavity. The apparatus further includes a membrane separating the propellant cavity and the fluid cavity, a propellant disposed in the propellant cavity, and a fluid retained in the fluid cavity. The propellant urges the fluid from the fluid cavity through the passage upon initiation of the propellant. A munition system includes a munition and at least one fluid jet apparatus adapted to vent the munition. A method includes initiating a propellant to produce a rapidly expanding gas and urging a fluid through a passageway with the gas to produce a fluid jet.

Abstract: The present invention relates to processing of hard materials, and more particularly relates to a multiple-tool machine for the combined cutting of slabs of hard materials such as stone, marble, granite, concrete, wood, metal, glass and the like. One embodiment of the present invention includes a support surface for receiving a slab; a load-bearing frame with a longitudinal beam extending over the support surface; a first disk blade cutting tool mounted on a first slide and movable along a first guide connected to the beam; a first motion imparting device for moving the first slide; a second cutting tool with a nozzle for high-pressure waterjet cutting, which is mounted in sliding relationship to a second guide coupled to the beam; and a second motion imparting device, other than the first motion imparting device, for translating the second cutting tool independently of the first cutting tool.

Abstract: A system includes a first scoring station, an optional second scoring station, and a cutting station. The first scoring station includes a stationary platen for supporting a substrate, a movable platen juxtaposed a spaced distance therefrom, and one or more scoring rules operatively associated with the platen and movable between a substrate non-contact position and a substrate contact position by the platen. The scoring rules may be independently movable in a selective manner for creating score lines at selective locations along the substrate when the platen moves the scoring rules into the substrate contact position. The scoring rules may be configured with scoring blades having selectively adjustable lengths and locations. The scoring rules may be constructed of a plurality of scoring segments that form the scoring blade. Each scoring segment is selectively movable between a scoring position and a non-scoring position for creating customizable score line lengths and locations.

Abstract: A flash vaporizing liquid jet cutting tool and method for piercing with minimal damage to the cut material. The liquid is preferably superheated water, typically with abrasive particles added after the jet is expressed through a nozzle (abrasive water jet, AWJ) or with abrasive particles added before the jet is expressed through a nozzle (abrasive slurry jet, ASJ). In piercing, only a portion of water that has not changed phase enters into the cavity or must leave the cavity and the piercing pressure, which can damage the material, is therefore reduced.

Abstract: Honeycomb removal comprises directing a nozzle at the surface of a substrate at an angle of less than about 90° such that the water will strike the substrate at the base of the honeycomb, parallel to the direction of the ribbon which forms the honeycomb structure. Water then passes through the nozzle and through the orifice at a pressure and flow rate sufficient to remove the honeycomb and preferably the underlying braze from the substrate surface. Relative motion is created between the substrate and the nozzle such that the water stream advances to an area which honeycomb has not been removed with the stream continually being directed at the base of the honeycomb.

Abstract: A method of cutting a product of a predetermined shape from a sheet material (1) by firstly supporting a sheet material in a first position by a first support means (2) whereafter she sheet (1) may be cut through by moving a line type cutter (7) relative to the sheet material on a line or lines to define part of the predetermined shape. The sheet material may then be supported in a second position (whether by the first support means or another support means (2a, 2b)) and again cut by moving a line type cutter relative to the sheet material on a line or lines to define the remaining perimeter of the predetermined shape, to thereby cut the predetermined shape from the sheet material. In the second position the sheet material is provided with upward support to support the predetermined shape to be cut from the sheet material and wherein in the second position the or another support means includes a through cut commensurate to the line or lines to define the remaining perimeter of the predetermined shape.

Abstract: An automatic cutting device is described for cutting an assembly. The assembly includes a material having a weakened zone therein that defines a useful layer and being attached to a source substrate. The cutting device includes a cutting mechanism and a holding and positioning mechanism operatively associated with the cutting mechanism. The holding and positioning mechanism positions the material so that the cutting mechanism detaches the layer from the source substrate along the weakened zone. The cutting device also includes a control mechanism for adjusting at least two different portions of the assembly during detachment of the layer to facilitate a more precise detachment.

Abstract: A water jet cutter for separation of a trim strip from a moving paper, cardboard, tissue or other type of fiber web, in a machine for the production and/or conversion of the fiber web, including at least one nozzle whose water jet is directed onto the fiber web. An advantage of the present invention is to simplify the construction of the device while maintaining at least equal operational reliability, and to enable installation above a pulper in order to eliminate the necessity for removal and extraction systems.

Abstract: A method and apparatus for preparing a perforated panel for reticulation to a film adhesive. The method includes supporting the perforated panel. The method also includes adhering the film adhesive to the perforated panel without initiating a cure of the film adhesive. The method applies a vacuum to the film adhesive. Next the method will move the perforated panel at a predetermined speed through a reticulation unit. Next the method will soften the film adhesive and finally remove the film adhesive from the perforations by an airflow. The method is generally used for creating acoustic sheet panels for use in many industries.

Abstract: A system for cutting steel plate, in particular for cutting the bottom and/or the wall of an oil storage tank, comprising a hydraulic or pneumatic pump and a movable cutting device comprising a hydraulic or pneumatic motor for moving the cutting device, wherein the pump and the motor are hydraulically or pneumatically interconnected by means of hoses.

Abstract: A method of, and apparatus for, transferring a web, in particular a paper web or cardboard web or an insertion tail severed from the web, from a web-discharging web-guiding surface, via a web conveying apparatus, to the next structural unit of a machine for producing and/or handling the continuous paper web or cardboard web, the insertion tail is detached from the web-guiding surface by way of at least one brief high-energy air jet. The present invention provides that in the case of a web of high grammage, immediately once the tail has been detached from the web-guiding surface, the tail, which has been severed at least on a preliminary basis, is completely severed by an additional mechanical severing arrangement and, by way of its newly formed start, gripped, and passed on, by way of the web conveying apparatus.

Abstract: A multistage abrasive-liquid jet cutting head comprising at least a first and a second mixing stage. Within the first mixing stage is a first mixing chamber arranged to accept a first flow of accelerated abrasive particles from a first abrasive feed tube and a pressurized liquid flow from an orifice and produce a pressurized slurry-like flow that is introduced to the second mixing stage. Within the second mixing stage is a second mixing chamber arranged to accept and mix is second flow of accelerated abrasive particles from a second abrasive feed tube with the pressurized slurry-like flow from the first mixing stage. An exit nozzle in fluid communication with the second mixing chamber that focuses the combination of the second flow of accelerated abrasive particles from the second abrasive feed tube with the pressurized slurry-like flow from the first mixing stage into an abrasive jet.

Abstract: A method of, and apparatus for, transferring a web, in particular a paper web or cardboard web or an insertion tail severed from the web, from a web-discharging web-guiding surface, via a web conveying apparatus, to the next structural unit of a machine for producing and/or handling the continuous paper web or cardboard web, the insertion tail is detached from the web-guiding surface by way of at least one brief high-energy air jet. The present invention provides that in the case of a web of high grammage, immediately once the tail has been detached from the web-guiding surface, the tail, which has been severed at least on a preliminary basis, is completely severed by an additional mechanical severing arrangement and, by way of its newly formed start, gripped, and passed on, by way of the web conveying apparatus.

Abstract: The invention provides an apparatus that holds and tilts a tool over a tilt range and substantially about a vertex. The apparatus includes a base having pivots defining a base line and a base pivot distance. The apparatus also includes first and second pivot arms coupled to the base pivots, and a tool holder having pivots coupled to the first and second pivot arms. The tool holder pivots defining a tool holder line having a pivot distance different than the base pivot distance. The tool holder is arranged for holding the machine tool. An intersection of the base line and a selected pivot arm defines a control angle, such that changing the control angle changes a tilt of the tool holder with respect to the base line, and correspondingly tilts a longitudinal axis of the tool substantially about a vertex.

Abstract: A liquid jet machining apparatus including holding means for holding a workpiece, liquid jet application means for applying a liquid jet to the workpiece held by the holding means, and catching means for catching the liquid jet which has penetrated the workpiece. The catching means includes a tank for accommodating a liquid. At the bottom of the tank, a cushioning member is replaceably disposed, and an abrasive is accumulated. The liquid jet having penetrated the workpiece acts on the liquid accommodated in the tank, and then acts on the cushioning member and the abrasive. Wave suppressing means for suppressing generation of waves due to the liquid jet acting on the liquid accommodated within the tank is disposed in an upper portion of the tank.

Abstract: A machine for cutting the border of a workpiece using one or more water jet cutting tools separately carried by one or more monorail track mounted carriage assemblies is disclosed. The machine can also include an aperture forming apparatus for forming circular openings and/or elongated slots in the workpiece prior to/or simultaneously with the border trimming operation, all while the workpiece occupies a single work station in the machine. In one embodiment, the aperture forming apparatus features a cutting tool mounted on an elongate arm affixed to and extending from a plate which is fixedly oriented in a horizontal plane. While so oriented, a motor and gear assembly causes the plate to wobble in a circular pattern in the plane to, in turn, cause the tool to make a circular cut in the workpiece. In another embodiment of the apparatus, a motor rotates a cam carried on a free end of a stationary arm, the cam containing an eccentrically mounted cutting tool.

Abstract: An abrasive jet apparatus is provided which includes an abrasive dispenser defining a compartment for storing a granular abrasive material and at least one metering orifice disposed in open communication therewith for dispensing the granular abrasive material. The apparatus also includes a shutter assembly disposed adjacent the metering orifice, which includes a shutter member angularly displaceable between first and second positions relative to the metering orifice. The shutter member has formed therethrough at least one shutter opening which in the first position is substantially fully aligned with the metering orifice, and in the second position is substantially fully offset therefrom. The apparatus further includes a position actuator operatively coupled to the shutter mechanism for reversibly displacing the shutter member to the first and second positions and a plurality of intermediate positions therebetween for occluding a selective portion of the metering orifice.

Abstract: A computerized method for determining a tilt parameter of a cutting head of a fluid-jet apparatus. The method includes receiving a target-piece shape, describing an ordered path defining the target-piece shape, and segmenting the path into small straight lines of approximately equal length. The method further includes determining a cutting-head translation speed for each of the small straight lines, determining a tilt parameter of the cutting head with respect to the plane of the workpiece in response to the speed and a fluid jet-shape parameter for each of the small straight lines, storing the small straight lines and the determined tilt parameter associated with each small straight line in a memory, and sending the stored data to the fluid-jet apparatus. The method may include controlling the tilt of the cutting head in accordance with the tilt parameter for each small straight line as the cutting head cuts the workpiece.

Abstract: The device for cutting a paper web or the like is arranged to cut in such a manner that a liquid medium is sprayed via nozzles (3). The device comprises a nozzle unit (2) that is arranged movable and comprises a nozzle (3) and a high-pressure pump (4).

Abstract: A method of cutting seed potatoes prior to their planting is provided in which a high pressure water jet is employed to slice the potatoes into the desired sized pieces. The present invention employs a single water jet, a plurality of water jets, or a cutting tube configuration containing either single or multiple water jet streams which are projected through the center of the cutting tubes or the cutting area and an equal amount of stream collector tube or tubes which contain the jet or jets and collects and directs the spent water to a proper location for its final collection or final discharge. Additionally, the use of this water jet system ensures that the seed potatoes that are cut will not contaminate one another through the cutting instrument as the water used in the cutting process only comes into contact with one potato and is then discharged from the system.

Abstract: Methods and systems for automating the control of fluid jet orientation parameters are provided. Example embodiments provide a Dynamic Waterjet Control System (a “DWCS”) to dynamically control the orientation of the jet relative to the material being cut as a function of speed and other process parameters. Orientation parameters include, for example, the three dimensional orientation parameters of the jet, such as standoff compensation values and taper and lead angles of the cutting head. In one embodiment, the DWCS uses a set of predictive models to determine these orientation parameters. The DWCS preferably comprises a motion program generator/kernel, a user interface, one or more replaceable orientation and process models, and a communications interface to a fluid jet apparatus controller. In one embodiment the DWCS embedded in the controller and performs a “look-ahead” procedure to automatically control cutting head orientation.

Abstract: Disclosed herein are positioning devices and related methods of positioning a tool in a desired location. In one exemplary embodiment, a positioning device includes a base having a length extending along a first horizontal axis. In addition, the positioning device includes a first arm coupled to the base and extending therefrom along a second horizontal axis perpendicular to the first horizontal axis. The first arm is configured for linear movement across the base along the first horizontal axis. The positioning device also includes a second arm coupled to the first arm carriage and extending therefrom along a vertical axis, where the second arm is configured for linear movement along the second horizontal axis. Moreover, in this embodiment, the second arm is also configured to pivot about a first rotational axis parallel to the first horizontal axis.

Abstract: A conveyor (22) moves workpieces (WP) past a scanning station (40) to ascertain one or more physical parameters of the workpiece (WP) and to a portioning station (24) wherein the workpiece (WP) is portioned into desired smaller portions. Thereafter, the conveyor (22) carries a portioned workpiece (WP) to an unloading station (26) where one or more pickup devices (28) removes specific portioned workpieces (PP) from the conveyor and places the portioned workpieces onto take away conveyors (30) for other locations remote from the first conveyor. A control system, composed in part of a computer (42), keeps track of the locations of the workpieces (WP) on the conveyor (22) and also optionally on the take away conveyor (30) so that portioned pieces (PP) are placed at specific desired locations remote from the conveyor (22) by the pickup devices (28).

Abstract: A forming method is provided that has surface pits, and the formed product thereof including a member adjust step for obtaining a member having a surface layer portion constructed by weak portions and high strength portion of relatively higher strength than the weak portions; and an inject step for injecting high pressure fluid to a surface of the member to remove at least a part of the weak portions for forming pits. That is, the weak portions are presented on the surface layer portion of the member on which the surface pits are to be formed. The high pressure fluid is injected to the surface layer portion to remove the weak portions from the member surface layer portion. The removed portion in the weak portions form the pits.

Abstract: A method and apparatus by which potatoes and other elongate food product can be properly oriented and stabilized during a slicing operation performed by a cutting device having a horizontal cutting plane. The apparatus includes a passage extending downwardly toward the cutting device and defining an opening in proximity to the cutting device, splines or other suitable features disposed along a first portion of the passage and oriented substantially parallel to the passage, and means for applying a force on a food product traveling downward through the passage so as to urge the product into contact with the splines during engagement with the cutting device.

Abstract: Support and positioning means (10) and a cutting head (13) supported on them extend in the operating position of the area of the edge part (14?) of a paper web (14). In the cutting head (13), there is a support surface (16) and at least one nozzle (17), which is set in such a way that the edge part (14?) travels between the support surface (16) and the nozzle (15). The equipment includes mechanical cleaning means (20) and/or a cleaning construction (21) for keeping the support surfaces (16) clean. The cleaning means (20) and/or cleaning construction (21) are arranged on the opposite side of the paper web (14) to the nozzle (17).

Abstract: A food product cutting apparatus that makes a substantially horizontal cut through food product being delivered in a substantially vertical direction. The food product is delivered to a cutting device through an internal passage of at least one feed member above the cutting device. A force is applied to the food product traveling downward through the internal passage so as to push the food product against a first wall of the feed member. The apparatus is configured to improve product flow by configuring the passage of the feed member to have a cross-sectional shape defined by two offset, overlapping diameters. The apparatus is also configured for improved safety by ensuring that the cutting device is properly secured before electrical power is available for driving the cutting device.

Abstract: This invention is to appropriately separate a bonded substrate stack regardless of some distortion in the bonded substrate stack or the like. This separating apparatus includes a first nozzle which forms a jet with a large width and a second nozzle which forms a jet with a small width. When the outer portion of a bonded substrate stack is to be separated, a jet formed by the first nozzle is used. After that, when a portion inside the outer portion is to be separated, a jet formed by the second nozzle is used.

Abstract: An apparatus transfers a moving web of a flexible material from a web guide surface. The web guide surface outputs the moving web, and the moving web has at least one web edge. The apparatus includes at least one edge nozzle, each edge nozzle being positioned so as to be proximate one at least one web edge. Each edge nozzle is configured for separating the moving web from the web guide surface and is further configured to function as a severing device. Each edge nozzle is thereby configured for transversely severing the moving web and forming a new start portion thereof. Each edge nozzle briefly ejects therefrom a high-energy air jet, each high-energy air jet being ejected between the web guide surface and the moving web.

Abstract: A computerized method for determining a tilt parameter of a cutting head of a fluid-jet apparatus. The method includes receiving a target-piece shape, describing an ordered path defining the target-piece shape, and segmenting the path into small straight lines of approximately equal length. The method further includes determining a cutting-head translation speed for each of the small straight lines, determining a tilt parameter of the cutting head with respect to the plane of the workpiece in response to the speed and a fluid jet-shape parameter for each of the small straight lines, storing the small straight lines and the determined tilt parameter associated with each small straight line in a memory, and sending the stored data to the fluid-jet apparatus. The method may include controlling the tilt of the cutting head in accordance with the tilt parameter for each small straight line as the cutting head cuts the workpiece.

Abstract: A tool and a method for cutting holes in a container wall such as in a tank, a cistern, a pipeline, a vehicle, a ship, a production like or the like that contains inflammable, explosive, or other hazardous gasses, and liquids. The tool includes means for pressurising a cutting medium and discharging said medium via a nozzle. The nozzle is arranged in an enclosing cover including a scalable safety outlet for evacuation of the container contents. The cover has means of sealed-off abutment against the container wall concerned in the area in which hole cutting is to be performed. The nozzle is arranged to be directed towards the container wall in such a way that in use the cutting medium is discharged in the form of a jet impinging against the container wall with sufficient force to cut through said wall.

Abstract: A conveyor belt assembly (10) for conveying an object to be portioned (54) by a fluid jet (52) is disclosed. The conveyor belt assembly (10) includes a conveyor belt formed from at least a first and a second picket (12) each having a length comprised of a sequence of geometrically shaped links (20) disposed transversely across the conveyor belt. The pickets (12) are disposed in a nested relationship to each other. The pickets (12) include upper edge portions (22) that form a conveying surface (42) for supporting and advancing the object to be portioned (54). The upper edge portions (22) are tapered in the upward direction to reduce dispersion of the fluid jet (52) during impingement of the fluid jet (52) on the conveying surface (42).

Abstract: This invention relates to apparatus and methods for z-axis control and collision detection and recovery for waterjet and abrasive-jet cutting systems. In one embodiment, an apparatus includes a linear rail, a slide member coupleable to a cutting head and slideably coupled to the linear rail, at least one actuator having a first end coupled to the slide member and a second end fixed with respect to the linear rail, a position sensor, and a controller. The actuator provides an adjustable support force that supports the weight of the cutting head, allowing the cutting head to be controllably positioned at a desired height above the workpiece. The actuator may include a pneumatic cylinder, or alternately, a linear motor.

Abstract: This invention is to appropriately separate a bonded substrate stack regardless of some distortion in the bonded substrate stack or the like. This separating apparatus includes a first nozzle which forms a jet with a large width and a second nozzle which forms a jet with a small width. When the outer portion of a bonded substrate stack is to be separated, a jet formed by the first nozzle is used. After that, when a portion inside the outer portion is to be separated, a jet formed by the second nozzle is used.

Abstract: A water jet cutting device is used to cut a paper web into a plurality of partial paper webs. The water jet cutting device is placed between the output of a web-fed rotary printing press and the input of a folder which folds the plurality of partial paper webs.