34results about How to "Improve ECM Efficiency" patented technology

The present invention is electrolytic processing method for ribbed deep small hole and its special tool cathode, and belongs to the field of electrolytic machining technology. The method includes the following steps: electrolytic machining one metal pipe with one reversely copied cathode to form notches in the surface of the metal pipe; coating epoxy resin glue into the notches; installing positioning rack to the end of the tool electrode to make the forming tool electrode; machining smooth hole in the workpiece; stretching the forming tool electrode into the deep smooth hole to machine the ribbed deep small hole. The present invention has simple machining of the forming tool electrode, high ribbed hole machining precision, high machining stability and other advantages.

The invention relates to an electrolytic milling-grinding machining tool cathode with efficiency and precision and an electrolytic milling-grinding method, and belongs to the field of electrolytic milling-grinding composite machining. According to the electrolytic milling-grinding machining tool cathode and the electrolytic milling-grinding method, a plurality of arc-shaped grooves at equal intervals are formed in the lower end of the side wall of the tool cathode, the side walls of the grooves are insulated, and diamond abrasive particles are inlaid in the wall surfaces of the portions, except for the grooves, of the side wall of a cathode base body through a resin binder, so that electrochemical anodic dissolution only exists in the surfaces of the portions, opposite to the grooves, of aworkpiece, at the moment, the depths of the grooves become a part of a machining gap, accordingly the contact depth between the diamond abrasive particles in the portions, except for the grooves, ofthe side wall of the cathode base body and the machining surface of the workpiece is increased, then the grinding effect of the diamond abrasive particles on the workpiece in the electrolytic milling-grinding process is enhanced, and the precision and the surface quality of the electrolytic milling-grinding machining can be improved; and moreover, compared with the electrolytic milling-grinding finish machining under the low current density in the past, the tool cathode can adopt higher current density, and the machining efficiency can be improved.

The invention discloses a non-uniform-speed double-rotation variable-machining-blade cathode blisk electrolytic machining method. The method comprises the following steps that a rotating feeding shaftof a tool cathode is determined through simulation solution; the rotation angles and the rotation speeds of the tool cathode at different positions are determined through simulation solution, and themotion track of the tool cathode simulation is obtained; the rotation direction, the rotation angle and the rotation speed of a blisk blank is determined through simulation solution; a machining blade of the tool cathode is designed to be a variable-width machining blade; the tool cathode is driven to perform one-way variable-speed rotating radial feeding from the tool setting position along therotating feeding shaft according to the motion track of the simulation by taking the twisting direction of a blisk design model blade profile as the rotation direction; and the blisk blank is driven to cooperate with the variable-direction variable-speed rotation of the tool cathode around the central axis according to the rotation direction, the rotation speed and the rotation angle of simulationoptimization, and a blade lattice channel is formed on the blisk blank. According to the method, the electrolytically-formed blade lattice channel is uniform in allowance distribution and high in surface machining quality, and precise electrolytic machining of the blade lattice channel of the blisk can be realized.

The invention discloses an electrolysis machining process method and tool fixture of an equal-thickness arc-shaped end face impeller and belongs to the technical field of electrolysis machining. According to the electrolysis machining method, cathode blocks with the number being the same as that of blades are adopted and uniformly distributed along the center of the impeller, rapid feeding is performed in the axial direction of the impeller when machining is performed, and one-time machining and forming of the thin-wall blades and an arc-shaped end face base body of the overall impeller can be completed. Nearly-forming hook face radians at the bottom ends of the cathode blocks for machining are large, arc-shaped curved lines where the included angle theta i=30 degrees is located serve as boundaries to divide different areas, linear interpolation finishing is performed according to actual machining experience and machining results, and requirements for the normal direction and lateral balance can be met simultaneously. By means of the electrolysis machining method, one-time machining and forming of the overall impeller can be achieved, machining efficiency is improved, and high practical value is achieved.

The invention provides a micro hole machining method and equipment and belongs to the technical field of specially machining micro holes. The two ends of a tube electrode and the two ends of a machining workpiece are connected with double power supplies including an electrical discharge machining power supply and an electrochemical machining power supply respectively; and electrolysis and electrical discharge composite controllable machining is realized by controlling machining parameters of the electrical discharge machining power supply and the electrochemical machining power supply. According to the micro hole machining method and equipment, a recast layer and a burr generated by singly electrical discharge machining the micro hole can be removed, and the efficiency and the machining accuracy when the micro hole is singly electrical discharge machined are improved; and better quality of the machined surface of the micro hole as well as higher machining efficiency and machining accuracy can be obtained.

The invention provides an electrolytic machining process method for an open type blisk. The electrolytic machining process method comprises the following steps of performing electrolytic machining bytaking the open type blisk as a workpiece anode, taking a machining tool as a tool cathode, connecting the workpiece anode with a power supply anode and connecting the tool cathode with a power supplycathode, wherein an insulating layer on the tool cathode is made of thermosetting polyether-ether-ketone. Stable and continuous electrolytic machining of the open type blisk is achieved, it is guaranteed that the machining precision and the machining quality of the blade profile meet the technological design requirements, and the defects that an existing open type blisk electrolytic machining process is frequently interrupted, short-circuit faults are prone to occurring, and the electrolytic machining efficiency is low are overcome.

The invention discloses a precise electrolytic machining process for a multi-tooth turbine blade, and relates to the technical field of electrolytic machining for turbine blades. The precise electrolytic machining process for the multi-tooth turbine blade comprises the steps of preparation for a tool cathode, installation for the tool cathode, electrolytic machining for a bamboo joint hole and the like. According to the invention, the defects of a traditional method are overcome, and under the condition of high voltage, the stability of the machining process can still be guaranteed, so that the electrolytic machining efficiency is increased, and the machining time is shortened; and when the temperature of an electrolyte rises, the flow speed of the electrolyte can be adjusted through an adjusting module so as to accelerate heat dissipation of an electrolytic machining area, so that stable control over the temperature of the electrolyte is achieved.

The invention discloses a workpiece ultrasonic-plasma electrolysis combined machining method and a machining device. The machining method comprises the following steps that an electrolyte is provided between a non-metal layer and a tool electrode; a metal layer is connected with the anode of an electrolytic machining power supply, the tool electrode is connected with the cathode of the electrolytic machining power supply, and direct-current voltage is applied between the metal layer and the tool electrode; and the tool electrode moves relative to the non-metal layer from the side, far away from the metal layer, of the non-metal layer, and ultrasonic waves are guided to the non-metal layer. According to the method, firstly, the surface of the non-metal layer is machined through the ultrasonic waves guided to the non-metal layer, and in the ultrasonic machining process, plasma generated through induction can promote solution circulation of ultrasonic machining, so that products of ultrasonic machining are rapidly discharged out of a machining area. And after the non-metal layer is machined, the metal layer is exposed, so that ultrasonic electrolysis parallel processing is carried out on the metal layer.

The invention discloses a suction type electrolytic machining device and method for finishing an internal structure. The suction type electrolytic machining device comprises a workpiece anode, a tool cathode, insulating layers, a clamping frame, a sliding block, a bolt, a sealing gasket, a liquid extraction opening and a compression screw, and the problem that electrolysis products and bubbles are difficult to discharge during electrolytic machining of the internal structure is effectively solved; the insulating layers are fixedly distributed at equal intervals in the axis direction of a workpiece cathode to ensure insulation of the tool cathode and the workpiece anode in the machining process; the workpiece anode is clamped through the clamping frame, the sliding block and the bolt; the electrolyte in the internal structure of the workpiece anode is pumped out by connecting the liquid extraction opening and a suction pump through a connecting pipe, and the bubbles and the electrolysis products generated in the electrochemical reaction process are brought out; during machining, the tool cathode is moved for a certain distance at a certain time interval, so that the area of which the electric field is originally shielded by the insulating layers is processed, and the electrolytic finishing machining of the whole internal structure is realized; according to the device and the method, the electrolyte can be pumped out of the internal structure when the internal structure is subjected to electrolytic finishing machining, the bubbles and the electrolytic products generated in the electrolytic machining process are taken away, and electrolytic finishing machining of the surface of the whole internal structure is achieved.

The invention discloses a method for bipolar electrolysis discharging machining of parts and an implementing device. The method for bipolar electrolysis discharging machining of parts comprises the following steps that a power source is supplied, wherein a positive electrode of the power source is connected with a conductive workpiece, and a negative electrode of the power source is connected witha conductive electrode; the conductive workpiece and the conductive electrode are soaked with an electrolyte; the power source is turned on to machine the conductive workpiece, the power source outputs bipolar pulse voltage, the bipolar pulse voltage includes positive polarity voltage and negative polarity voltage, and the voltage value of the negative polarity voltage is larger than 25 V. The positive polarity voltage is used for oxidizing and corroding the conductive workpiece, the negative polarity voltage is used for generating spark, the electrolysis discharging efficiency of an electrode in the positive polarity voltage pulse period is improved, and the high machining efficiency can still be achieved under the centimeter-scale machining interval.

The invention discloses a device for electrochemical machining of a template. The device comprises a fixture and the template, and an electrolyte flow chamber is formed between the fixture and the template; and the electrolyte flow chamber is internally provided with a group of metal columns connected with a negative electrode of a power supply, and the outer wall of each metal column is providedwith a circle of convex teeth. The convex teeth on the metal columns are inclined to the same direction. The electrolyte flow chamber is internally provided with a liquid inlet and a liquid outlet separately, and the rotation direction of the metal columns is consistent with the flow direction of electrolytes; and the inclination direction of the convex teeth is consistent with the rotation direction of the metal columns. According to the device, electrolytic products between the negative electrode and a positive electrode are directly stirred through mechanical motion, so that the mass transfer efficiency of the electrolytic products in an electrolyte flow field is improved.

The invention discloses an electrolytic machining method, a terminal and a storage medium, the method relates to calling a feeding device and an electrolyte supply device to machine a three-dimensional cavity, and the method comprises the steps that a cavity structure model of a workpiece to be machined is obtained; obtaining a unit model of the cavity structure model; segmenting the cavity structure model by taking a unit model as a segmentation unit, and segmenting the cavity structure model into a plurality of unit models; numbering the unit models according to a preset direction; according to the serial numbers of the unit models, the feeding device and the electrolyte supply device are called, electrolytic machining is conducted on workpiece machining areas corresponding to the unit models in sequence, and a cavity structure is obtained; a three-dimensional cavity structure is divided into unit model structures, a feeding device and an electrolyte device are called, a sealed machining area is formed at the machining end and the machining position of a cathode, electrolysis products and waste gas are recycled, and the environment is protected; and meanwhile, the machining efficiency is improved, and the protection effect on the cathode is improved.

The invention discloses a tool and method for machining a variable cross-section hole through total reflection laser and jet flow electrolysis assisted by dry ice impact, and relates to the field of non-traditional machining, and the tool comprises a hollow annular glass tube, a metal layer and an insulating coating; a metal layer is electroformed on the outer side wall of the hollow annular glass tube, insulating coatings are coated on the outer side wall of the metal layer except a plurality of annular areas without insulating coatings in the axial direction, and secondary electrolysis is carried out on a hole processed at the end part of a tool electrode in the annular areas so as to realize reaming and polishing. According to the machining method, laser beams between the inner tube and the outer tube of the hollow annular glass tube form annular laser beams through total reflection conduction of electrolyte, so that machining efficiency is improved, and meanwhile the flatness of the machined surface is improved; the laser beams reach a machined area on a workpiece through multiple times of total reflection of the wall surfaces of the inner tube and the outer tube; dry ice microparticles are sprayed from the inner pipe of the hollow annular glass pipe to a processing area to promote disturbance and rapid cooling of the processing area. According to the invention, one-time forming processing of the variable cross-section hole can be realized.