521results about "Electrical-based machining electrodes" patented technology

This invention discloses a radial electrolytic machining apparatus and method for integral bladed disks with multi-channel variable cathodes, relating to the field of electrolytic machining technology. The apparatus includes a cathode tool, a guide assembly, and a transmission assembly. The cathode tool is slidably connected to the guide assembly along a feed trajectory, which has components along the radial direction of the bladed disk blank and circumferential components around the centerline of the cathode tool. The cathode tool is connected to the machine tool spindle via the transmission assembly, which converts the axial movement of the machine tool spindle into radial movement along the bladed disk blank. This invention also provides a method for radial electrolytic machining of integral bladed disks with multi-channel variable cathodes. The apparatus and method provided by this invention have a simple structure, stable operation, and high machining efficiency.

The invention belongs to the technical field of special maintenance of reactor bodies, and particularly relates to an electric spark machining head for cutting a sleeve flange in a narrow space. Comprising an expansion mechanism, a fine adjustment jacking mechanism, a rotating mechanism, an electrode and a radial servo feeding mechanism, the rotating mechanism provides rotary motion of the electrode and drives the electrode to conduct rotary machining, the radial servo feeding mechanism provides radial feeding motion of the electrode, and the expansion mechanism plays a role in fixing and positioning. The fine adjustment jacking mechanism drives the rotating mechanism, and the radial servo feeding mechanism drives the electrode to do up-down, rotating and radial feeding movement. The method has the beneficial effects that the damage to the pressure-bearing boundary of the primary loop of the nuclear power unit can be avoided under the condition that the heat sleeve is worn out of limits and needs to be replaced aiming at the common problem of wear settlement of the heat sleeve of the control rod driving mechanism of the nuclear power unit, and the whole dismantling work has relatively high safety, reliability and economical efficiency; and greater benefits can be created for the operation of a power plant.

The invention relates to the technical field of precision manufacturing and intelligent control, and particularly discloses an intelligent spark machine machining parameter optimization method based on effect feedback, which comprises the following steps of: calculating an abnormal characteristic value of an electrode feeding speed by using Haar wavelet transform, and analyzing time sequence data of conductivity of a working solution by using fast Fourier transform; according to the method, abnormal characteristic values are obtained, the characteristic values are constructed into a comprehensive characteristic vector, the comprehensive characteristic vector is input into a random forest model for comprehensive analysis, an electric spark machining effect score is generated, the system can dynamically adjust the electrode feeding speed and the working fluid conductivity based on the effect score, and it is ensured that machining parameters are always in the optimal configuration; according to the method, the machining efficiency is improved, the rejection rate is reduced, the surface quality and the size precision of the product are greatly improved, and the requirement of precision manufacturing is met.

The application discloses a kind of electric spark wire collecting and releasing device and method of convenient automatic wire feeding, belong to spark wire cutting processing technical field, including rack;The top of rack is connected with the adjusting type take-up and pay-off assembly for take-up and pay-off;Adjusting type take-up and pay-off assembly includes take-up and pay-off assembly, adjusting type linkage assembly and translation component, translation component is fixedly connected with rack, adjusting type linkage assembly is connected with take-up and pay-off assembly, adjusting type linkage assembly is fixedly connected with translation component;The end of the winding end of take-up and pay-off assembly is fixedly connected with the elastic compression assembly for cutting wire end fixedly connected;The side of rack close to cutting machine tool is connected with the wire feeding assembly for cutting wire to be sent to elastic compression assembly, and wire feeding assembly is movably connected with elastic compression assembly.The application realizes automatic wire feeding, and it is beneficial to practical use.

A wire electrical discharge machining (WEDM)-adapted wire electrode includes a core material composed of brass having a zinc concentration of greater than 40 mass %, and a coating layer covering a periphery of the core material, wherein the coating layer is composed of brass having a zinc concentration higher than the zinc concentration of the core material and of 44 mass % or more and 50 mass % or less, and wherein a ratio of a thickness of the coating layer to a diameter of the WEDM-adapted wire electrode is 2% or more and 20% or less.

A flexible electrode (2) in-line deformation electrical discharge cutting method. During machining of complex surfaces, such as blisks, a flexible electrode (2) is used as a tool electrode for electrical discharge machining, the surface of the flexible electrode (2) is used as a machining surface for performing cutting-type electrical discharge machining along a preset path, and, according to the curvature characteristics of the machined surfaces, the flexible electrode (2) undergoes in-line deformation, thereby completing the machining of complex surfaces. The flexible electrode (2) is made of a material having good electrical conductivity and elasticity, so as to ensure that the flexible electrode (2) can recover after deformation. Using the flexible electrode (2) for realizing electrical discharge cutting machining for three-dimensional complex surfaces can simplify a design process for the tool electrode and improve the electrical discharge machining efficiency.

The application discloses a machine vision controlled block electrode self-adjusting electrolytic machining device and method, relates to the field of electrolytic machining, and electrolytic machining is divided into preforming electrolytic machining and block compensation electrolytic machining; the preforming electrolytic machining stage is a stage of electrolytic machining in which a whole forming tool cathode is used as a cathode to work on a workpiece at a constant feed speed, the stage is used for primarily copying and forming the workpiece, and then the block compensation electrolytic machining stage is started; the block compensation electrolytic machining stage is used for dividing the machining area into zones, capturing image information of electrolytic machining of the workpiece and block electrodes by machine vision, analyzing and processing the block zones, obtaining actual machining gaps of the block zones, comparing and calculating the actual machining gaps with corresponding target values, and then sending instructions to a movement execution system to control specified block electrodes to perform compensation electrolytic machining, so that machining errors caused by fluctuations in conductivity along the way are eliminated, and finally, electrolytic copying and forming machining with higher machining precision is realized in the long process of the distorted workpiece.

The invention discloses an adjustable multi-electrode electrolytic turning device and method.The adjustable multi-electrode electrolytic turning device comprises a rotary driving device, a multi-electrode device and a movable driving device, the multi-electrode device comprises an annular base, an adjusting device and a plurality of tool electrode tips, and the annular base is provided with a circumferential annular sliding groove and a radial linear sliding groove; the adjusting device comprises a disc rotating in the annular sliding groove, a first driving device driving the disc to rotate and a plurality of sliding blocks moving along the linear sliding groove, a spiral guide rail is arranged on the upper surface of the disc, teeth are arranged on the lower surfaces of the sliding blocks, the teeth on the lower surfaces of the sliding blocks are matched with the spiral guide rail, and when the disc rotates, the sliding blocks slide along the linear sliding groove. The sliding block is fixed to the tool electrode tip through the pressure sensor. Large-allowance removal of shaft part difficult-to-cut materials is achieved in a multi-electrode distribution mode, a driving device composed of an end face gear and a spiral guide rail is adopted, it is guaranteed that machining gaps between all electrodes and a workpiece are consistent, system errors are reduced through feedback of a pressure sensor, and the machining precision is high.

The invention discloses a wire cutting machine, and belongs to the technical field of cutting equipment. The wire feeding device comprises a base, a wire feeding assembly and a workbench, wherein the wire feeding assembly and the workbench are arranged on the base; the wire moving assembly comprises a wire storage barrel, an electrode wire, a first extending part and a second extending part, the first extending part and the second extending part are arranged in parallel and arranged on the upper side and the lower side of a workpiece, part of the electrode wire is wound around the wire storage barrel, and the remaining part of the electrode wire can act on the workpiece after being limited by the first extending part and the second extending part. The first extending part comprises a stabilizing part, the stabilizing part abuts against the electrode wire, the stabilizing part can buffer the electrode wire, and the stabilizing part can decelerate the electrode wire which accelerates instantly so that wire vibration of the electrode wire can be reduced. By arranging the stabilizing piece, when the electrode wire vibrates in the radial direction, the stabilizing piece can buffer the electrode wire so as to reduce vibration, and wire vibration is effectively restrained.

The utility model discloses a gantry type linear cutting machine tool which comprises a machine tool body and a portal frame, a workbench is arranged on the machine tool body, an upper cross beam and a lower cross beam are arranged on the portal frame in the vertical direction, the upper cross beam and the lower cross beam are each provided with an inner bin, an upper wire cylinder is installed in the inner bin of the upper cross beam, and a lower wire cylinder is installed in the inner bin of the lower cross beam. The upper wire cylinder and the lower wire cylinder are used for pulling a molybdenum wire, bin openings of the two inner bins face the same direction, the workbench is provided with a clamping assembly, the linear cutting machine tool adopts a gantry type layout, the bin openings of the two inner bins face the same direction, working operation is greatly facilitated, and no matter molybdenum wire replacement, wire threading or fault removal operation is carried out, the machining efficiency is greatly improved, and the machining cost is reduced. In addition, due to the fact that the upper wire cylinder and the lower wire cylinder are in the up-and-down relation, a lot of winding is omitted, operation is easier, and working efficiency is improved.

The invention relates to an automatic wire threading method and device for reciprocating wire cut electrical discharge machining. The automatic wire threading device comprises a pretreatment part, an upper wire guide part, a lower wire guide part and a signal trigger, the pretreatment part straightens and cuts off the front section of the electrode wire, the upper wire guide part comprises a first sensor and a hydraulic wire conveying piece, and the first sensor is used for detecting the starting point position of a wire head of the electrode wire; the guide pipe assembly is provided with a second wire guide path, the axis of the second wire guide path is tangent to the wire storage barrel at the first position, and an outlet of the second wire guide path is adjacent to or abuts against the wire clamping mechanism on one side of the wire storage barrel at the second position. And the signal trigger is positioned between the outlet of the second wire guide path and the wire clamping mechanism. According to the automatic wire threading device, wire threading of the electrode wire is achieved, the operation difficulty is lowered, the personnel intervention degree is lowered, and the wire threading efficiency is improved.

The invention discloses an electric spark wire winding and unwinding device and method facilitating automatic wire feeding, and belongs to the technical field of spark wire cutting machining. The top of the rack is connected with an adjustable winding and unwinding assembly used for winding and unwinding. The adjustable winding and unwinding assembly comprises a winding and unwinding assembly, an adjustable linkage assembly and a translation assembly, the translation assembly is fixedly connected with the rack, the adjustable linkage assembly is connected with the winding and unwinding assembly, and the adjustable linkage assembly is fixedly connected with the translation assembly; the end part of the winding end of the winding and unwinding assembly is fixedly connected with an elastic crimping assembly for fixing the end part of the cutting wire; the side portion, close to the cutting machine tool, of the rack is connected with a wire feeding assembly used for feeding cutting wires to the elastic crimping assembly, and the wire feeding assembly is movably connected with the elastic crimping assembly. Automatic wire feeding is achieved, and actual use is facilitated.

The application discloses a split high-precision wire cutting machine capable of adjusting the length of a cutting area. The machine comprises a machine tool and a workbench. The workbench is arranged on the side of the machine tool. The machine tool is provided with a driving roller and a plurality of wire wheels. The driving roller is wound with a metal wire. The machine tool is further provided with an adjusting structure. The adjusting structure comprises a vertical moving structure for adjusting the length of the cutting area, a horizontal moving structure matched with the vertical moving structure and used for not changing the length of the metal wire, and a base structure for mounting the vertical moving structure and the horizontal moving structure. In this way, the split high-precision wire cutting machine capable of adjusting the length of the cutting area has the adjusting structure. The length of the cutting area can be directly adjusted without changing the length of the metal wire. The metal wire does not need to be tensioned again. The processing efficiency is greatly improved.

According to the combined type drilling electrolytic machining electrode and the electrode array provided by the invention, uniform distribution and effective washing of electrolyte in a machining area are realized by limiting parameters of a water outlet hole of an electrode tip and an insulating sleeve, optimizing the structural size of an electrode main body and a flow guide interface and combining layered machining and a dynamic parameter adjustment strategy; the accumulation phenomenon of electrolytic products is obviously reduced, and the machining precision and the surface quality are improved; the electrode array is matched with the independent control module and the multi-channel distributor, synchronous and efficient multi-hole machining is achieved, and the multi-hole synchronous machining device is suitable for high-precision batch production scenes and has the advantages of being reasonable in structure, flexible to control and wide in applicability.

The invention relates to an electrochemical machining device (12) for machining elongated workpieces (14), with at least two synchronously movable, vertical telescopic guides (26), with a base (38), which is arranged in the region of a lower end (36) of the telescopic guides (26) and has a lower holder (42) for at least one workpiece (14), and with an upper holder (58) for the at least one workpiece (14), which is vertically adjustable to allow the distance between the holders (42, 58) to be adjusted to the length of the at least one workpiece (14), and with an electrode holder (48), which is fastened to the telescopic guides (26) and can be moved relative to the upper holder (58) by the telescopic guides (26). The invention also relates to an installation (10).

The invention belongs to the technical field of nuclear power plant equipment maintenance, and particularly relates to an underwater electric spark maintenance device based on rigid-flexible coupling positioning in an irradiation environment. Comprising an underwater carrying device, an electric spark machining device, a camera monitoring device and a control system. The underwater carrying device provides carrying and positioning supporting for the electric spark machining device, the electric spark machining device achieves underwater cutting of the instrument casing pipe, the control system is arranged on the water, the underwater cutting operation of the instrument casing pipe is completed through remote operation, and the maintenance process is monitored and recorded in real time through the camera monitoring device. The method is simple to operate and short in consumed time, secondary damage to the lower reactor internals is avoided, and the lower reactor internals are not affected to return to the reactor for reuse.

The utility model relates to the technical field of mechanical manufacturing, and discloses a wire cutting device convenient for vertical calibration, which comprises a machine body, a cutting arm and a cutting head, an electrode wire is arranged at the bottom of the cutting head, a vertical component is integrated on the side of the cutting head, and a rotating arm and the cutting arm are magnetically attached or vertically unfolded to switch working states. The vertical assembly comprises a double-layer annular piece and an adjusting bolt, the double-layer annular piece allows the electrode wire to pass through a fan-shaped opening, and the second sliding piece slides along the annular piece and is matched with the threaded adjusting bolt to achieve electrode wire perpendicularity detection. In the calibration process, when the rotating arm is perpendicular to the machine body, the axis of the double-layer annular piece and the cutting shaft are collinear, and perpendicularity is judged by adjusting spark consistency of a bolt end detection round head and an electrode wire. By means of the integrated calibration structure, the problems that a traditional device depends on an external calibration block and is prone to being interfered by the levelness of a workpiece are solved, the calibration efficiency and precision are remarkably improved, and the device is suitable for high-precision linear cutting machining scenes.

A wire electrical discharge machining (EDM) device comprises the following: a pair of wire parallel guide rollers arranged on both sides of a workpiece to hold the workpiece between them, each of these rollers having a plurality of wire guide grooves formed at equal intervals on an outer circumferential surface, the plurality of wire guide grooves causing a plurality of running cutting wire sections to fit into them and constraining the movement of the plurality of cutting wire sections; parallel wire extension position measuring units (52a, 52b) which measure a distance between a measuring reference surface set parallel to a virtual plane containing the plurality of cutting wire sections and a wire electrode forming the plurality of cutting wire sections;a wire guide groove detachment detection unit (53) that detects the occurrence of a change in distance based on a measurement result obtained from the parallel wire extension position measuring units (52a, 52b); and a wire condition determination unit (54) that determines, based on the detection result obtained from the wire guide groove detachment detection unit (53), whether it is a wire detachment condition in which at least one of the cutting wire sections has detached from the wire guide groove, or a wire contact condition in which all cutting wire sections are in contact with the wire guide grooves.

A full-profile electrolytic machining device and method based on in-situ deformation of an integral cathode for a shrouded blade, which belong to the technical field of electrolytic machining. A blade basin / back cathode body in the device consists of a cathode base, a shroud platform cathode, a blade airfoil cathode, a tenon platform cathode, a shroud-side water blocking block, a tenon-side water blocking block and an upper-end water blocking block. During machining, by means of a driving device and a deformation mechanism, platform cathodes on two sides are enabled to be in an inwardly retracted state at the beginning, so as to machine a blade airfoil profile; and when the blade airfoil profile is machined to a certain depth, the platform cathodes on the two sides expand outwards, such that the platform cathodes on the two sides generate in-situ swinging deformation close to platform profiles on two sides of a blade while the blade airfoil profile is machined, thereby achieving synchronous full-profile electrolytic machining of a blade airfoil of a shrouded blade and platforms on two sides thereof. The device can improve the machining efficiency, machining precision and surface quality, and has relatively good practical application prospects.

The invention discloses a passive bipolar movable mask electrochemical machining device and method for a workpiece. The device comprises a power supply control system, an electrochemical machining system, a motion control system and an electrolyte circulating system, the electrochemical machining system is provided with a first electrochemical machining tank and a second electrochemical machining tank which are oppositely arranged, two electrodes are arranged in each electrochemical machining tank, and two movable masks are pressed and attached to the two faces of a workpiece to form a mask structure. The motion control system drives the two grooves to be closed or separated; the electrolyte circulating system forms flushing and sucking liquid circulation facing the surface of a workpiece through a flushing pipe and a liquid sucking pipe; the power supply control system intermittently switches the polarities of the two electrodes, so that charge distribution on the two sides of the workpiece is alternately changed, and passive bipolar electrochemical machining is realized; according to the method, photoresist is replaced by the movable mask, the process is simplified, the efficient liquid flushing and absorbing mode and the electrostatic induction machining mode are combined, the inter-electrode mass transfer and electric field uniformity are remarkably improved, and the machining efficiency, precision and depth-diameter ratio are improved.

An electrode wire (2) for electrical discharge machining comprises: - a metal core (10) comprising a peripheral face, the metal core being made of a single copper-zinc alloy, and - a zinc oxide layer (12) directly formed on the peripheral face of the metal core and covering this peripheral face, wherein the average thickness of the zinc oxide layer (12) is between 100 nm and 461 nm.

The invention relates to an electrode wire threading pretreatment device and method and a wire cut electrical discharge machining system. According to the electrode wire threading pretreatment device, a first conductive part, a third conductive part and a second conductive part are arranged at intervals in the first direction, the first conductive part, the third conductive part and the second conductive part are all used for abutting against an electrode wire, a first pressing block is rotatably arranged on a pretreatment frame and is provided with a lap joint position and a first disengaging position, and the first pressing block is used for pressing against the electrode wire at the lap joint position. The first pressing block is in lap joint with the first conductive part to increase the moving resistance of the electrode wire, the second pressing block is rotatably arranged on the pretreatment frame and is provided with a fixing position and a second disengaging position, and at the fixing position, the second pressing block abuts against the second conductive part to fix the electrode wire. The electrode wire threading pretreatment device is simple in structure, low in cost and convenient to operate, a linear section can be formed on the front section of the electrode wire, a sharp wire head is formed, and therefore follow-up wire threading is facilitated.

To provide a technique capable of performing polishing while suppressing damage to a surface of a conductive semiconductor substrate.SOLUTION: Provided is a polishing pad used for polishing a surface to be polished of a conductive semiconductor substrate, the polishing pad having a film containing a solid polymer electrolyte on at least part of a polishing surface in contact with the surface to be polished.SELECTED DRAWING: Figure 3

The present application relates to the technical field of slow wire cutting machining equipment, and particularly relates to a slow wire cutting machining device for wire cutting electrical discharge machining. The slow wire cutting machining device for wire cutting electrical discharge machining comprises a support, a wire guide mechanism and a tension adjusting mechanism. The wire guide mechanism is arranged on the support and is used for conveying an electrode wire. The tension adjusting mechanism is arranged on the support. The tension adjusting mechanism comprises a plurality of smooth guide wheels, the plurality of smooth guide wheels are connected through a tension belt drive, a magnetic powder controller, an output end of the magnetic powder controller is connected with one of the smooth guide wheels, the electrode wire is clamped between the tension belt and one of the smooth guide wheels, the magnetic powder controller controls the braking torque acting on the smooth guide wheel by adjusting the excitation current, and the braking torque acts on the electrode wire through the tension belt to generate controllable tension. The slow wire cutting machining device for wire cutting electrical discharge machining realizes accurate and controllable adjustment of the electrode wire tension, and improves the stability and precision of the cutting machining.

The application discloses a wire cutting machine tool wire guide device and belongs to the technical field of processing equipment. The wire cutting machine tool wire guide device comprises a main beam and a tension adjusting mechanism, a wire diameter detecting mechanism, a guide mechanism and a collecting mechanism. The main beam is provided with the tension adjusting mechanism for adjusting the wire tension in real time. One side of the main beam is provided with the wire diameter detecting mechanism for detecting the wire diameter in multiple directions. One side of the main beam is provided with the guide mechanism for guiding the wire. One side of the wire diameter detecting mechanism and the guide mechanism is provided with the collecting mechanism for collecting impurities on the wire. The guide mechanism comprises a guide wire feeding assembly and an anti-interference assembly. The main beam is provided with the guide wire feeding assembly for guiding the wire feeding. In the above manner, the application can improve the accuracy of wire detection after wire feeding and the accuracy of wire diameter detection, can clean the wire surface in real time and prolong the service life of the wire.

The utility model relates to the technical field of wire stretching devices, and discloses a molybdenum wire constant tension device of a linear cutting machine tool, which comprises a stretching rack, a piston cylinder is arranged in the middle of the stretching rack, a gear is arranged at the top of the stretching rack, a transmission rack is arranged at the bottom of the gear, a rotating shaft is fixedly connected in the gear, and a motor is arranged in the rotating shaft. A gear is fixedly connected to one side of the transverse stretching device, a transmission motor is fixedly connected to one side of the gear, a fixed sliding block is fixedly connected to the top of the positioning block, a sliding block is fixedly connected to one side of the sliding rail, and an upper sliding groove is fixedly connected to one side of the positioning column. And the gear is rotated through the transmission motor, so that the transmission rack moves left and right, one end of the molybdenum wire is in a tightened state, the tightened molybdenum wire is more stable in the cutting process, shaking caused by vibration or external force is reduced, and therefore the cutting stability is improved.

Machining fixture (112) for a wire electrical discharge machine having an electrical discharge wire (115), comprising a plurality of member holes (116) each adapted to accommodate at least one workpiece (117), said workpiece (117) being adapted to form at least one portion of a jointed device (70, 170, 270); said fixture (112) is suitable for use for at least two cuts on at least two workpieces (117) accommodated in at least two of said plurality of member holes (116), said at least two cuts are performed in at least two cutting planes comprising a first cutting plane (X-Y) and a second cutting plane (Y-Z); wherein said fixture (112) comprising further at least one reference rod (118), suitable to allow for the cut calibration; and wherein said plurality of member holes (116) are sequentially arranged such that a translating straight line, substantially orthogonal to said first cutting plane (X-Y), or substantially orthogonal to said second cutting plane (Y-Z), would intersect at most only one of said workpieces (117) at a time, when said workpieces (117) are mounted in respective member holes (116).

Systems (10) and methods for characterizing an electrical discharge drilling process using ultrasound are provided. The characterization of the electrical discharge drilling process facilitates estimating cycle times and electrode (18) consumptions for future electrical discharge drilling tasks. An electrical discharge drilling machine includes a base (14) for supporting a workpiece (16), an electrode (18) operable to drill a hole (20) in the workpiece (16) using an electrical discharge, and an ultrasonic probe (30) installed on the base (14) and oriented toward the workpiece (16) when the workpiece (16) is supported by the base (14).

The utility model discloses a wire threading mechanism for a linear cutting machine tool. The wire threading mechanism comprises a first supporting table, a second supporting table and a motor bearing cushion block. The utility model relates to the technical field of machine tool accessory assistance, the cutting wire can be rapidly and stably installed on the mechanism through the design of a cutting wire multi-dimensional tension structure, by means of the structure, a linear cutting machine tool can be rapidly and efficiently put into operation, and the machining efficiency is remarkably improved; compared with a part of mechanisms of the same type, the mechanism effectively avoids the risk that the cutting wire is damaged due to excessive tensioning, and by precisely regulating and controlling the tensioning force, the potential problem caused by improper tension is avoided while the installation stability of components is guaranteed, so that the wire cutting operation can be efficiently carried out in a safe and stable environment, and the working efficiency is improved. And powerful support is provided for the production efficiency and the product quality of enterprises.