The invention relates to a tool for electrolytic processing large diameter holes by interval arrangement of flushing and pumping liquid and a method, which belongs to the technical field of electrolytic processing. The device comprises a liquid supply system, a cathode component and a liquid discharge system. The interval type small spacing liquid supply and liquid discharge circulation system disclosed by the invention comprises a suction pump, a liquid suction pipe, a annular liquid inlet pipe, a liquid inlet group pipe, and a liquid outlet group pipe, which effectively solves the problem ofdifficulty in discharging liquid and product during processing of deep holes. The rapid liquid supply of the annular flow passage improves the uniformity of the liquid supply during processing. A cathode punching liquid and a liquid discharging hole are disposed in an annular groove, which can limit the electrolyte to the processing area, thereby improving the localization of the processing. A flexible sealing sleeve can seal the electrolyte in the processing area and improve the stability of the electrolyte in the processing area; in addition, the porous metal filter module in the liquid suction pipe can filter out large particles which are not removed by electrolytic processing. According to the tool for electrolytic processing large diameter holes by interval arrangement of flushing and pumping liquid and the method, the electrolytic processing the large diameter holes on the curved surface of the difficult-to-machine material can be realized.

Tool for electrolytic processing large diameter holes by interval arrangement of flushing and pumping liquid and method

The invention discloses an intermittent pulse electrolytic machining device. The intermittent pulse electrolytic machining device comprises an electrolytic liquid box, a water pump, an electrolytic pulse power supply, a machining platform and a driving mechanism; the machining platform is provided with a chuck for clamping workpieces; the machining platform is provided with a machining shaft rightabove the chuck; the machining shaft is driven to linearly move up and down by the driving mechanism; a convex tooth for machining an inner key slot is arranged at the lower end of the machining shaft; a cathode of the electrolytic pulse power supply is electrically connected with the machining shaft, and an anode is electrically connected with the chuck and the workpieces; a water inlet of the water pump communicates with the electrolytic liquid box; and a water outlet of the water pump conveys electrolyte to the convex tooth of the machining shaft and parts to be machined of the workpiecesthrough a liquid supply pipe. The intermittent pulse electrolytic machining device solves the problem of limitation of machining of the inner key slot by factors of the hardness of the workpieces andsmaller machining aperture, and improves the machining quality of the inner key slot.

Intermittent pulse electrolytic machining device and inner key slot machining method

The invention provides an electrolytic machining tool for a gear tooth groove surface micro-structure. The tool comprises a base, a supporting rack, a digital control rotation table device, a rotationshaft, a gear, a liquid inlet connector, a liquid outlet connector, an anode electric conduction sheet, a cathode base, a cathode electric conduction sheet and a formation cathode; a gear is arrangedbetween a first supporting side plate and a second supporting side plate; one end of a rotation shaft is fixedly connected with the gear, and the other end of the rotation shaft is connected with thecenter of a rotary working table of the digital control rotation table device; the liquid inlet connector is communicated with a liquid inlet through hole; the liquid outlet connector is communicatedwith a liquid outlet through hole; the anode electric conduction sheet is installed on the rotary working table of the digital control rotation table device; the cathode base is connected with a machine tool main shaft; the cathode electric conduction sheet and the formation cathode are installed on the cathode base, and the formation cathode penetrates through a top plate, extends to the portionbetween the first supporting side plate and the second supporting side plate and is movably matched with the top plate. According to the electrolytic machining tool, masking electrolytic machining isadopted, an electrolyte flowing mode is lateral flowing, the electrolysis product of the gear tooth groove surface is conveniently taken away, and the situation is avoided that an island structure isformed on the processing surface of a workpiece.

Electrolytic machining tool for gear tooth groove surface micro-structure

The invention discloses an electrolytic finishing method of a micro linear gear. According to the electrolytic finishing method, a driving wheel and a driven wheel in a linear gear are utilized as ananode, then a driving wheel tool electrode meshing with the driving wheel and a driven wheel tool electrode meshing with the driven wheel are taken as a cathode, in a meshing state, a gap for storingan electrolyte is formed between the driving wheel and the driving wheel tool electrode, and a gap for storing an electrolyte is also formed between the driven wheel and the driven wheel tool electrode; and then a rotating driver is utilized to drive the driving wheel and the driven wheel to rotate, and the driving wheel tool electrode and the driven wheel tool electrode are both driven by a linear driver to conduct linear motion so as to electrolyze the surface of the driving wheel and the surface of the driven wheel, thus the surface roughness of the driving wheel and the surface toughness of the driven wheel are reduced, and control is convenient.

Electrolytic finishing method of micro linear gear

The invention discloses a design method for precision electrolytic machining cathode position consistency. A positioning pin is additionally arranged on a traditional tool cathode, a cathode standardblock device is additionally arranged on electrolysis equipment, the tool cathode with the positioning pin and the cathode standard block device are subjected to tool setting operation so as to recordstandard coordinate values of the X axis, the Y axis and the Z axis of the electrolysis equipment; when the tool cathode is reinstalled later on, the standard values are used as a judgment reference,the new tool setting values of the X axis, the Y axis and the Z axis are respectively compared with the standard coordinate values, if the difference value of the three values is smaller than 0.05, the position consistency of the tool cathode is considered to be good, and otherwise, the tool cathode needs to be reinstalled until the requirements are met. According to the method, the consistency of the three-dimensional space installation position on the electrolysis equipment can be controlled before the tool cathode is subjected to part machining, so that the inconsistency of installation ofthe tool cathode due to the influence of any factors on the tool cathode and the equipment joint part is avoided.

Design method for precision electrolytic machining cathode position consistency

The invention discloses an electrochemical machining device and method for an internally-oblique micro line segment gear. The electrochemical machining device comprises a power system, a PLC control system, an electrolyte circulating filtration system, a numerical control rotary table, a cathode system and a workpiece clamp. According to the method, a sheet-shaped cathode which is machined by a high-precision linear cutting machine and has the thickness of 1mm is used, and the gear outline shape on a tool cathode is obtained by the fact that a workpiece inner gear shape to be machined and formed is offset to the inner side by a machining gap delta in the radial direction; in the machining process, the tool cathode makes rotating movement around a shaft while being fed downwards in the radial direction, and workpieces are machined according to an electrochemical anodic dissolution principle; the spiral angle of an inner gear is guaranteed by the speed ratio of axial feeding and rotary feeding around the shaft, and when the spiral angle of the gear is changed, corresponding angle machining can be achieved through change of the speed ratio of the axial feeding and the rotating movement around the shaft. The electrochemical machining device and method are beneficial to improving the machining efficiency and the gear forming precision.

Electrochemical machining device and method for internally-oblique micro line segment gear

The invention discloses an automatic wire feeding device for micro electrical discharge machining. The automatic wire feeding device for micro electrical discharge machining is used for machining an electrode wire for micro electrical discharge machining. According to the automatic wire feeding device for micro electrical discharge machining, a wire-electrode cutting wire can be used as a tool electrode for micro electrical discharge machining, cost of micro electrical discharge machining is lowered, and machining efficiency is improved. Firstly, a user winds the electrode wire with a certain diameter around a wire reel, and the electrode wire reaches a conductive wheel through wire rectifying wheels, penetrates through a feeding system and a wire guide nozzle, and extends by a certain distance. The conductive wheel is connected with a micro electrical discharge machining power source to achieve conduction from the power source to the electrode wire. Switching-on and switching-off of the power source and feeding and retracting of the electrode wire are controlled a micro electrical discharge machining control system so as to achieve micro electrical discharge machining.

Automatic wire feeding device for micro electrical discharge machining

The invention discloses a water and electricity isolation electric heater comprising a water tank, a ceramic plate is tightly attached to the outer wall of the bottom of the water tank, solenoid coils are arranged at the bottom of the ceramic plate, slope-shaped hot iron is arranged at the bottom in the water tank, and a controller, a power circuit, a temperature sensor and a water level sensor are arranged on one side of the water tank, wherein the power circuit, the temperature sensor and the water level sensor are respectively connected into the controller, and the power circuit is electrically connected with all the solenoid coils. The water and electricity isolation electric heater is novel in structure and convenient to operate, under the condition that water and electricity are isolated, the water-based electric heater can perform efficient heating indoors, and safety and comfort of heating can be improved.

Chen Zhengwen

Papers

Electrochemical machining device and method for internally-oblique micro line segment gear

Automatic wire feeding device for micro electrical discharge machining

Water and electricity isolation electric heater