184results about "Machining electrodes" patented technology

The present invention relates to an electrolytic processing device and method for a dual-channel component with multi-cathode coordinated feeding, and belongs to the field of electrolytic processing. The electrolytic processing device includes a multi-cathode coordinated feeding drive mechanism, a cathode module and a fixture module; wherein the cathode module includes a profile cathode, an inner and outer channel cathode, and the fixture module includes a blade basin clamp body, a blade back clamp body, and a workpiece clamp body. The present invention adopts a multi-cathode coordinated feeding drive mechanism to drive the cathode module, so that the profile cathode moves along the set feeding direction, and the inner and outer channel cathodes slide and feed along the side of the profile cathode. This movement mode can realize the joint processing of the inner and outer channels and blade profiles of the dual-channel component, thereby improving the forming accuracy and efficiency. The multi-cathode coordinated feeding drive mechanism is composed of a longitudinal guide rod, a transverse slider, a longitudinal slider, an angle adjustment double rod, etc. By adjusting the initial position of each slider and the mechanism angle, the single-side channel cathode is independently controlled to realize the independent processing of the inner and outer channels, ensure the channel forming accuracy, and have strong processing adaptability.

The present invention relates to a method and device for electrolytic machining with self - controllable deformation of a shape memory alloy electrode, belonging to the technical field of electrolytic machining. This method uses a shape memory alloy as the electrode material and the initial part profile line as the electrode shape. Through heat treatment, the electrode corresponds to different part profile line shapes at different temperatures. During electrolytic machining, the electrode is connected to a floating fixture, and the temperature of the electrolyte is regulated by the equipment to cause corresponding deformation at different positions. After the machining is completed, using the shape memory effect of the material, the electrode is heated to restore its shape. This method can not only achieve the machining of variable cross - sections but also reuse the electrode.

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 discloses a precise electrolytic machining method for a herringbone groove microstructure of an air floatation kinematic pair, which comprises the following steps: machining a workpiece by adopting a profiling cathode with a convex structure complementary with a target herringbone groove on the surface, and connecting the workpiece with an anode assembly; the convex structure is a processing area, and an insulating coating is arranged on the surface of a non-processing area except the convex structure; the processing pulse of the power supply system is started at the liquid supply closing stage of the electrolyte system, and the processing pulse of the power supply system is stopped and the electrolyte is updated at the liquid supply opening stage of the electrolyte system. High-precision, low-cost and high-efficiency machining of the herringbone groove microstructure is achieved through profiling cathode shaping, group pulse precise etching and intermittent liquid supply and deslagging, and the problems of stray corrosion control, groove depth gradual change uniformity and batch consistency in electrolytic machining are solved.

The present invention relates to a closed - type blade - ring screwed - in cascade - channel electrochemical machining device and method, belonging to the field of electrochemical machining. The device mainly includes a support disk, a workpiece, an insulating gasket disk, a tailstock, a cathode rod, a cathode head, etc. During machining, the cathode remains fixed, and the workpiece rotates and feeds along an arc - shaped trajectory in the axial direction of the blade, gradually machining the cascade channel into shape. A group - slit structure is arranged on the cathode head to ensure sufficient supply of electrolyte to the machining area. A reverse - flow groove is arranged on the insulating gasket disk, so that when the cascade channel is about to be machined through, the electrolyte will not disperse, but under the action of the reverse - flow groove, it will be flushed back to the machining area, preventing liquid shortage and ensuring machining stability.

The present invention belongs to the technical field of electrochemical machining, and particularly relates to a design method for the cathode profile of an all-metal oil screw drill stator by electrochemical machining. The contour curve of the cathode profile is designed into a dot matrix according to unequal gaps, so as to obtain the control points, order and knot vector of the contour curve, construct operators, and use integral spline operators to control the global shape of the contour curve to achieve rough fitting of the cathode contour; when the square curvature of the cathode contour curve is the smallest relative to the integral of its arc length, the curvature of the curve is the most uniform. A fitting index for the cathode contour curve is constructed, and the discrete curvature at each point of the cathode contour curve is calculated in turn to achieve precise fitting of the cathode contour curve, and the error can be controlled within the accuracy range of 0.002 mm; the "B-τ" spline inner contour integration method is used to design the cathode profile of the all-metal oil screw drill stator. The present invention has the advantages of short cathode design cycle, high forming accuracy, and significantly reduced cathode manufacturing cost.

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 relates to a multi-cathode machining method for electrolytic machining of a shrouded leaf disc, and belongs to the technical field of electrolytic machining. The device mainly comprises a tool disc, a tool cathode, a mounting seat, a liquid inlet and outlet device, a liquid sealing plate and the like. The tool cathodes are arranged on the tool disc in a circular array mode, and the liquid inlet pipe corresponding to each tool cathode is connected to the other side of the tool disc and used for providing electrolyte. A backflow gap is designed between every two tool cathodes, so that the stability of a flow field is improved. The upper side of the backflow seam is connected with a liquid outlet device, and a liquid outlet is connected with a back pressure valve to adjust a flow field and improve controllability of the flow field. Liquid sealing plates are designed on inner and outer rings of the tool cathode to ensure that a processing flow field is uniform and stable. During machining, electrolyte passes through the tool disc and the hollow inner cavities of the tool cathodes from the liquid inlet device to reach the machining surface, the tool disc drives all the tool cathodes to rotate around the Z axis while feeding in the negative direction of the Z axis, rotary feeding of the cathodes is achieved, and the machining efficiency is improved.

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.

This electrolytic marking device 100 includes: a feed-out part 1; an electrolytic marking part 2 that is disposed downstream of the feed-out part 1 and marks an identification mark 60 on a metal sheet material 50; and a take-up part 3 that is disposed downstream of the electrolytic marking part 2 and takes up the metal sheet material 50 marked with the identification mark 60 in the shape of a roll.

The invention relates to the technical field of electrochemical machining and manufacturing, in particular to a device for electrochemically removing edge burrs in batches. The problems that in the prior art, various complex parts cannot be machined at the same time, the cathode installation efficiency is low, and a flow field is unstable and uneven are solved. According to the technical scheme, the device comprises a flow guide device, a flow guide fixing plate, an air pressure adjusting device and a cathode and anode conductive device; three stages of communicated flow guide cavities are formed in the flow guide device from bottom to top, a flow guide fixing plate is arranged above the flow guide device, and a workpiece and the flow guide device are fixed through the flow guide fixing plate; air pressure adjusting devices with the same number as the workpieces are uniformly distributed above the flow guide fixing plate along the circumference; a cathode assembly is arranged above the air pressure adjusting device, an anode conductive device is arranged between the air pressure adjusting device and the cathode assembly, the number of anode conductive columns on the anode conductive device is the same as that of workpieces, and the anode conductive columns correspondingly penetrate through the cathode assembly and holes in the corresponding air pressure adjusting device to be connected with the workpieces.

The present invention belongs to the technical field of electrolytic machining, and specifically relates to a large-caliber complex spiral wire electrolytic machining cathode with replaceable working teeth. The present invention includes a front guide, a cathode body and a rear guide. The original integral cathode body is changed into a split structure, and the cathode working teeth are fixedly connected to the cathode body; a connector plus a protective sleeve structure is provided at one end connected to the pull rod, and the cathode body and the connector can be replaced in case of failure. A cavity is provided between the cathode connector and the front guide, and an inclined hole for liquid outlet is provided on the front guide to increase the pressure of the electrolyte. The present invention can realize the engineering application of electrolytic machining technology for large-caliber complex spiral wire parts such as gun barrel rifling, special-shaped spiral splines, and oil drilling all-metal screw drill tools, which can effectively shorten the cathode development cycle and reduce costs.

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).

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.

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 invention provides a method for designing a Reuleaux biangular tool and electrolytically machining a grid wallboard, and belongs to the technical field of electrolytic machining. In the process of electrolytic machining of a grid wall plate through a Reuleaux two-angle tool, the current density of the surface of a workpiece is in an intermittent state or a machining state, localized removal of materials is achieved, and the machining method comprises the following steps that according to the characteristics of a Reuleaux triangle fixed-width curve, the Reuleaux two-angle oval cathode tool is designed; the center of the tool is controlled to do regular eccentric rotation motion through planetary gear transmission, and the motion trail of the cathode tool forms a regular triangle localized electric field; a new intermittent electrolytic machining mode of the grid wall plate is formed along with the periodic turning-in / out of the machining area of the tool machining blade; the machining mode is beneficial to rapid and uniform crushing of a passivation film, and is suitable for precise machining of materials such as easily passivated titanium alloys and titanium-aluminum intermetallic compounds; electrolyte updating is facilitated, and temperature rise, bubbles and product aggregation are avoided; and the overcut phenomenon is avoided. By means of the method, high-quality electrolytic machining of the grid wall plate can be achieved.

A downhole tool, for removing sections of metal tubing, said downhole tool comprising at least one conductive element being arranged to corrode a section of metal tubing using an electrolytic process, said conductive element being made of electric conductive material, an apparatus to establish a connection to the metal tubing, and a source of electrical power.

The invention discloses a partitioned electrolytic machining device and a machining method for a micro-groove structure on the surface of a large metal component, relates to the field of machining of the micro-groove structure on the surface of the large metal component, and aims to solve the problem that in the mask electrolytic machining process of the micro-groove of the large metal component, the machining path is too long; the electrolytic machining device comprises a workpiece, an insulating elastic layer, a hollow electrolytic pattern, a metal layer electrode, a power source and a switch. The to-be-machined face of the workpiece is covered with an insulating elastic layer, a hollowed-out electrolysis pattern is arranged on the insulating elastic layer, a plurality of metal layer electrodes are arranged on the insulating elastic layer, the metal layer electrodes are mutually insulated, an anode of the power source is connected with the workpiece, and the metal layer electrodes are sequentially connected with a cathode of the power source through a switch. The problems that in large-area workpiece mask electrolytic machining, electrolytic products block interelectrode gaps, and poor quality is caused are effectively solved, and the mask electrolytic machining method is used for mask electrolytic machining.

The invention provides a device (10) for producing a profiling on an inner wall of a projectile-guiding tube (12) by means of electrochemical machining, comprising a holder (20) which is intended for a projectile-guiding tube (12) and has, at two opposite ends, opposing centring elements (22) with a receptacle (24) for the tube (12) to be machined, and comprising a rifling cathode (18), which can be moved through the tube (12) to be machined, wherein at least one centring element (22) is axially adjoined by a guide body (28) which is intended for the cathode (18) and has a central clearance (30) concentric with the receptacle (24), wherein the rifling cathode (18) is driven in such a way that it can be moved into the guide body (28). The invention also provides a method for producing a profiling on an inner wall of a projectile-guiding tube (12) by means of electrochemical machining.

The invention provides a variable-diameter electrolysis clamp which comprises a base body, a first electrolyte channel is formed in the base body, one end of the base body serves as a first electrolyte opening, and a plurality of mounting grooves communicating to the first electrolyte channel are formed in the outer surface of the base body; the electrode plate is movably embedded into the mounting groove; the insulation sleeve is arranged on the part, not provided with the mounting groove, of the base body in a sleeving mode, and a second electrolyte channel is formed between the insulation sleeve and the base body; and the insulating cap is fixed at the other end of the base body, and an electrolyte hole communicated with the first electrolyte channel is formed in the insulating cap. The special structure of the electrode plate and a proper electrolyte flowing channel are utilized, self-adaptive expansion of the electrode plate in the machining process is achieved, the diameter of an electrode component formed by the electrode plate is larger than the hole diameter, the gap between the electrode component and the machining surface is kept within a certain range all the time, and therefore an ultra-large-diameter cavity of an inner hole of a metal machining piece is machined. Compared with boring machining, the efficiency is improved by multiple times, the tool cost is greatly reduced, and the machining quality is remarkably improved.

An electrode wire for electrical discharge machining and a preparing method thereof. The electrode wire comprises: a core material (1); an intermediate layer (2) located externally to the core material (1); and a surface layer (3) located externally to the intermediate layer (2). Wherein, the material of the core material (1) is a metal or an alloy, and the material of the intermediate layer (2) is a copper-zinc alloy. The intermediate layer (2) has pits (20) on its surface, and the pit (20) has micro-pits (200) on its surface. The size of the micro-pit (200) is smaller than that of that of the pit (20) on which the micro-pit located. The surface layer (3) discontinuously covers the exterior of the intermediate layer (2) and fills the pits (20) and micro-pits (200). During the preparing process, the copper-zinc alloy is formed inside the electrode wire through electroplating, heat treatment, and drawing processes, while pits (20) and micro-pits (200) are formed on the surface of the intermediate layer (2) via extrusion.

An electrolyte solution is provided for electrochemical processing. The electrolyte solution includes a substantially anhydrous ionic solvent, an ionizable material in the form of an inorganic salt, and a viscosity modifier. The electrolyte has a viscosity in the range of 1 to 50 mPa.s at 20°C.

The invention discloses a double-electrode high-precision synchronous rotation movement mechanism for rotary printing electrolytic machining, and relates to the technical field of electrolytic machining, the double-electrode high-precision synchronous rotation movement mechanism comprises an anode main shaft assembly, a cathode main shaft assembly and an electrolyte isolation assembly, comprising an inner and outer wall rotary printing electrolytic machining method and a'guiding-following 'control strategy of a main shaft; the main shaft assembly comprises a thrust centripetal cylindrical roller bearing, a deep groove ball bearing, a hollow stepped main shaft, a coupler, an absolute encoder, a direct drive motor and the like. The direct-drive motor is directly coupled to drive the main shaft, so that an intermediate transmission link is omitted, and mechanical errors are reduced; the spindle phase is fed back in real time based on an absolute encoder; a'guiding-following 'control strategy is adopted, high-precision synchronous contra-rotation of the cathode spindle and the anode spindle is achieved, reversing rotation can be achieved in the high-precision synchronization process, and the rotary printing electrolytic machining device is suitable for rotary printing electrolytic machining of the outer wall and the inner wall of a large thin-wall rotary body part.

The present invention discloses an electrolytic machining device and method for a PCHE heat exchanger plate, comprising a three-dimensional moving platform, a cathode fixing plate, an electrolyte circulation device and a pulse power supply; the plate to be machined is arranged as an anode plate on the top of the three-dimensional moving platform, multiple cathode plate groups are fixedly arranged side by side on the cathode fixing plate, and the cathode plate groups are located on the top of the anode plate. The outlet of the electrolyte circulation device is connected to the cathode fixing plate, the cathode of the pulse power supply is connected to the cathode plate groups, the anode of the pulse power supply is connected to the plate to be machined, and an electrolyte recovery tank is arranged at the bottom of the anode plate. The electrolyte recovery tank is connected to the inlet of the electrolyte circulation device. This device uses electrolytic machining to machine the flow channels on the PCHE plate instead of chemical etching, avoiding the use of expensive etching agents and photoresist, thereby reducing the processing cost.

The present invention discloses a sleeve-shaped electrolytic machining device with a liquid-increasing hole to enhance liquid supply, comprising a cathode head, a cathode seat assembly and a liquid supply assembly, wherein a first contoured hole and a plurality of liquid-increasing holes are provided on the cathode head, and the plurality of liquid-increasing holes are arranged around the first contoured hole; the cathode seat assembly defines a liquid supply channel that is opposite to and connected with the first contoured hole, and at least a portion of the liquid supply channel is a contoured structure corresponding to the first contoured hole, and the cathode seat assembly further defines a liquid-increasing channel that is opposite to and connected with the liquid-increasing hole; the liquid supply assembly is used to supply electrolyte to the liquid supply channel and the liquid-increasing channel. A multi-channel liquid supply method is adopted, and the design of the liquid-increasing hole supplements the liquid supply to the low-speed area of ​​the flow field in the processing area, thereby improving the uniformity and stability of the flow field and facilitating the high-speed sleeve electrolytic machining of parts. In addition, the main path and the liquid-increasing path are separated, and the main path and the liquid-increasing path can be adjusted separately, thereby improving the flexibility of adjusting the liquid supply pressure and further enhancing the improvement effect of the liquid supply on the flow field.

Methods and systems of electrochemically machining a component are provided. The method may include applying two or more potentials to a tool electrode comprising an array of two or more individual electrodes to generate two or more electric fields in between the tool electrode and a workpiece opposite of the tool electrode, wherein each of the two or more electric fields is generated by one of the array of two or more individual electrodes.

The present invention relates to a method for simulating the manufacturing of a component, in particular comprising at least one blade (8.1) and / or a blade carrier (8) of a gas turbine, by means of electrochemical machining, wherein the method comprises the step of: providing input parameters (S10; S10'), and the, in particular repeated, sequence of steps: calculating (S20; S20') an electrochemical machining operation based on the provided input parameters; and calculating (S30; S30') a component geometry based on this electrochemical machining operation. The invention further relates to a method for manufacturing a component by means of electrochemical machining, a method for manufacturing a cathode for this manufacturing of a component, a method for designing the manufacturing of the component, and a system or computer program (product).

The invention belongs to the field of electrolytic machining, and particularly relates to a wide-width jet flow electrolytic milling tool bit capable of discharging liquid in a stepped and graded mode. The tool bit comprises a tool bit body, an electrolysis power source, an electrolyte circulating system, a main liquid inlet channel, an upper liquid drainage channel and a lower liquid drainage channel. The electrolyte circulating system comprises a liquid supply centrifugal pump and a suction pump. In the milling machining process, electrolyte is pumped into the main liquid inlet channel through the liquid supply centrifugal pump, part of the electrolyte is pre-discharged through the upper liquid discharging channel, the remaining electrolyte flows to the machining gap in the bottom of the tool bit, then the lower liquid discharging channel is matched with the suction pump to suck the remaining electrolyte in a negative pressure mode, stepped flow field regulation and control are formed, and wide-width electrolytic milling is achieved. The structure is simple and compact, the utilization rate of the effective conductive area at the bottom of the tool bit is high, and stray corrosion can be remarkably inhibited. The machining method based on the tool bit is suitable for high-precision and high-surface-quality milling of high-temperature alloy and other difficult-to-machine metal large thin-wall components in the aerospace field.