1272results about "Electrical-based machining electrodes" patented technology

An automatic wire threading and removal method and device for wire cutting. The method comprises: guiding a molybdenum wire that is conveyed upwards by a wire feeding device below a workpiece (16) to pass through the workpiece (16) by passing through the workpiece (16) from above the workpiece (16) by means of a wire guiding tube (12); clamping the molybdenum wire by means of a wire clamping device, and pulling the molybdenum wire back to an appropriate position by means of a wire spool (118); then, using a flexible-shaft wire-pulling hook (02) to pull an end of the molybdenum wire to the wire spool (118); tightening the molybdenum wire by means of a wire tightening device (21) arranged on a lower wire holder (18), and securing the end of the molybdenum wire by means of a plurality of wire-pressing elastic sheets (141) arranged on the wire spool (118); and cutting off the molybdenum wire between the flexible-shaft wire-pulling hook (02) and the wire-pressing elastic sheets (141) by means of a wire cutting knife (126) to complete a wire threading operation. During wire removal, the molybdenum wire is clamped by using a wire removal and pressing device (07), and the wire spool (118) then rotates to pull the molybdenum wire out of the wire-pressing elastic sheets (141) and pull the end of the molybdenum wire to below the workpiece (16) to complete a wire removal operation, wherein waste generated during processing is cleaned up by a waste cleaning brush (17).

The invention discloses a double-wire-walking linear cutting machine tool and a using method thereof, and belongs to the technical field of electrode wire cutting equipment. The double-wire-walking linear cutting machine tool comprises a first wire source device, a second wire source device, a tensioning device, a wire changing and feeding device, a wire penetrating device and a first wire conveying device which are installed on a machine frame, a wire clamping device is installed on the second wire source device, and the wire penetrating device is arranged between the wire changing and feeding device and the second wire source device. The first wire conveying device is arranged on the side, away from the wire penetrating device, of the second wire source device, so that a first electrode wire extends to the wire changing and feeding device from the first wire source device, and a second electrode wire extends to the wire changing and feeding device from the second wire source device through the tensioning device. The wire changing and feeding device is used for conveying the first electrode wire or the second electrode wire into the wire penetrating device. Through cooperation of the tensioning device, the wire replacing and feeding device, the wire penetrating device, the wire clamping device and the second wire conveying device, replacement of the first electrode wire and the second electrode wire can be achieved.

The invention relates to the field of linear cutting machine tools, and provides a linear cutting automatic wire threading method and device.The linear cutting automatic wire threading method is characterized by comprising the steps that a lead pipe moving detection wheel with the rotating speed detection function and a lead pipe driving wheel are adopted to control a lead pipe to move up and down from the lower portion of the lead pipe; when downward movement of the lead pipe is blocked, the lead pipe is controlled to ascend by a certain height and rotate by a certain angle to descend, so that the lead pipe is prevented from being damaged, and the success rate of the lead pipe penetrating through the wire penetrating hole is increased; two circular guide nozzles with variable-diameter semicircular grooves in the outer edges are adopted to rotate, a circular hole guide lead pipe and a guide molybdenum wire with the diameter of the lead pipe and the diameter of the molybdenum wire are formed, the position can be updated after the grooves forming the circular hole of the guide molybdenum wire are abraded, and the service life of the circular guide nozzles is prolonged; the automatic threading device is characterized by comprising a mounting plate, a self-protection lead tube driving device, a lead tube rotation driving device and a variable-diameter grooved wheel type guide nozzle, the failure rate of an automatic threading machine tool is reduced, the success rate of automatic threading is increased, and the service life of the guide nozzle is prolonged.

The present invention relates to the technical field of electric spark discharge machining, and discloses an electrode structure, an electric spark machining device and a machining method, wherein the electrode structure includes a connecting member, whose axis is a first axis, and one end of the connecting member has a mounting portion; the electrode is hinged to the mounting portion through a hinge shaft, and the axis of the hinge shaft is a second axis; one end of the biasing member abuts against the connecting member, and the other end abuts against the electrode, applying a biasing force to the electrode tending to remain in the mounting portion; the connecting member can be driven to rotate around the first axis, and the electrode deflects out of the mounting portion and rotates around the second axis when the connecting member rotates. This allows the electrode to extend into a guide hole machined on a workpiece when the connecting member is not rotating, and to deflect out of the mounting portion to machine a rotating inner cavity or inner hole when the connecting member rotates to generate centrifugal force, thereby solving the problem that the electric spark equipment in the prior art cannot machine a rotating inner cavity or inner hole whose inner cavity diameter is larger than the orifice.

The invention provides a double-wire system of a wire cutting machine, the wire cutting machine and a wire changing method of the wire cutting machine, which are applied to the field of wire cutting machines, and are characterized in that the double-wire system comprises a limiting assembly used for limiting an electrode wire in the length direction of a machining position; the molybdenum wire winding cylinder is used for containing a molybdenum wire; the molybdenum wire leading-in module is used for driving the molybdenum wire led out of the molybdenum wire winding barrel to move and leading the molybdenum wire into the limiting assembly, and driving the molybdenum wire to return to the molybdenum wire leading-in module when the type of the electrode wire is replaced; the copper wire winding cylinder is used for containing a copper wire; the copper wire leading-in module is used for driving the copper wire led out of the copper wire winding barrel to move and leading the copper wire into the limiting assembly, the copper wire is driven to return to the copper wire leading-in module when the type of the electrode wire is replaced, and the molybdenum wire leading-in module and the copper wire leading-in module are alternately matched with the limiting assembly; the cutting device has the technical effect that a copper wire or a molybdenum wire can be respectively used for cutting a workpiece.

The invention provides a flexible nodular electrode and an electrochemical mechanical composite finishing method for an inner channel, and belongs to the technical field of electrochemical mechanical composite machining. The flexible nodular electrode comprises a plurality of similar nodular units, and each nodular unit comprises an electrode conductive substrate, a universal joint, a porous insulating layer and insulating soft abrasive particles. The adjacent nodal units are hinged through the universal joints, and good flexibility is achieved. The insulating layer on the surface of the conductive substrate of the electrode is made of loose and porous sponge, and an electric field line and electrolyte can penetrate through the insulating layer, so that an electrochemical effect is generated between the conductive substrate and the complex inner channel, and meanwhile, short-circuit burn caused by contact between the conductive substrate and the surface of the complex inner channel can be avoided; the insulating soft abrasive particles are embedded outside the insulating layer, so that a mechanical scraping effect can be applied to a complex inner channel in the machining process, and a passive film generated on the surface of a workpiece is ground away. During polishing, the electrode reciprocates, and complex inner channel polishing is completed under the composite action of electrochemical and mechanical scraping.

The invention discloses a method for electric spark machining of a high-carbon high-chromium molybdenum alloy steel chute, a first group of electrodes is adopted to machine the chute to be machined, the first group of electrodes comprises a first electrode, a second electrode and a third electrode, when the first group of electrodes is adopted to machine each chute, the first electrode is firstly used for rough machining, and then the second electrode is used for machining; carrying out semi-finish machining by using a second electrode, and finally carrying out finish machining by using a third electrode; after a plurality of skewed slots are machined, after a first electrode in a first group of electrodes is abraded, a second group of electrodes is adopted to machine the skewed slots to be machined, the second group of electrodes comprises a second electrode, a third electrode and a fourth electrode, when the second group of electrodes is adopted to machine each skewed slot, the second electrode is firstly used for rough machining, and then the third electrode is used for semi-finish machining; and finally, finish machining is conducted through a fourth electrode. And in this way, after the (n-3) th electrode in the (n-3) th group of electrodes is abraded, the (n-2) th group of electrodes is adopted to machine the chute to be machined, the (n-2) th group of electrodes comprises the (n-2) th electrode, the (n-1) th electrode and the nth electrode, when the (n-2) th group of electrodes is adopted to machine each chute, the (n-2) th electrode is firstly used for rough machining, and then the (n-1) th electrode is used for semi-finish machining, and finally, finish machining is conducted through the nth electrode. The invention aims to improve the processing efficiency and reduce the production cost while ensuring the processing quality.

The invention relates to the technical field of cutting, and provides an adjustable linear cutting machine tool which is characterized in that a wire conveying device is arranged above a fixed box and is used for cutting a workpiece. And the movable adjusting device is arranged above the fixed box, is arranged on the side of the wire conveying device and is used for driving the workpiece to move. And the circulating device is arranged in the fixed box and is used for cleaning and cooling the workpiece and circularly filtering the cooling liquid. The controller is arranged above the fixing box and electrically connected with the wire conveying device, the movable adjusting device and the circulating device. The tightness degree of the electrode wire is adjusted through rotation of the circular ring on the wire conveying device. A first electric guide rail, a second electric guide rail and a water pump are opened through a trigger button, a workpiece is cut and cooled after an electrode wire starts to move, and the cutting efficiency can be affected when the electrode wire stops moving.

The invention relates to the technical field of linear cutting machine tools, and discloses a vertical linear cutting machine tool which comprises a base, a motor is installed on one side of the upper portion of the base, an adjusting assembly for controlling the motor to rotate forwards and backwards is connected to one side of the output end of the motor, a bobbin is arranged on one side of the output end of the adjusting assembly, and a tail barrel is arranged at the tail end of the bobbin. A brake assembly is installed on the outer side of the tail barrel, one side of the brake assembly is in linkage with a quick clamping assembly through a push rod, and a contact assembly is installed on the side, away from the motor, of the upper portion of the base. According to the vertical type linear cutting machine tool, if the wire breaking condition occurs in the working process of the device, the upper and lower groups of quick clamping assemblies can be combined in a short time to clamp the wire in the device, the situation that the broken wire is stored by a bobbin to cause difficulty in later winding is avoided, the broken wire head is clamped and fixed, a fracture does not need to be found, and the working efficiency is improved. And later-stage re-coiling utilization is facilitated.

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 invention discloses a carbon nano tube reinforced tungsten carbide titanium metal ceramic material as well as a preparation method and application thereof, and belongs to the field of metal ceramic materials. According to the invention, a spark plasma coupling high-frequency induction sintering method is adopted, CNTs are uniformly dispersed in a material matrix through a method of dispersing CNTs through dry ball milling again, and the uniformly dispersed CNTs improve the discharge environment, reduce the sintering current and reduce the energy consumption under the spark plasma coupling high-frequency induction effect in the sintering process. The high-compactness, high-strength and high-wear-resistance (W, Ti) C-based metal ceramic material is prepared at the sintering temperature of 1350 DEG C by utilizing the ultrahigh conductive complementary effect of the (W, Ti) C metal ceramic material and the CNTs.

The utility model relates to the technical field of linear cutting machine tools, in particular to a wire pressing device for a linear cutting machine tool, which comprises a support frame, a mounting plate fixed on the side surface of the support frame, support plates fixed at the top end of the mounting plate, winding pulleys mounted between the two support plates, and a cutting wire connected between the two winding pulleys. The two ends of the cutting line penetrate through the line through holes, friction and abrasion are reduced through protection of the protection sleeve, limiting and stabilizing are conducted through the installation cylinder, the cutting line is kept vertical, and cutting use is facilitated. The cutting line is wound on the surface of the winding pulley, the winding pulley is rotated through the rotating handle, the length and the tightness degree of the cutting line between the two mounting plates are adjusted, the jacking plate is jacked and fixed through the jacking bolt, the stability of the winding pulley is kept, then the cutting line can be wound in order, and the tightness degree of the cutting line can be adjusted.

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 provides a wire clamping device of a wire cutting machine, which is applied to the field of wire cutting machines, and is characterized by comprising a wire conveying pipe which slides along a linear direction and is used for conveying an electrode wire; the sliding driving device drives the wire conveying pipe to slide; the wire winding barrel is used for winding an electrode wire; the first clamping piece and the second clamping piece are used for clamping and fixing the electrode wire in a matched mode, and the first clamping piece is fixed to the wire winding barrel; the pressed part is arranged in the wire winding cylinder; the elastic piece is used for extruding the pressed piece towards the direction far away from the inner wall of the wire winding barrel; the connecting piece is connected with the pressed piece and the second clamping piece, when the elastic piece applies pressure to the pressed piece, pressure is transmitted to enable the second clamping piece to apply pressure to the first clamping piece, and the first clamping piece and the second clamping piece are extruded by the wire conveying pipe to be opened; the electrode wire has the technical effect that the fracture risk of the electrode wire can be reduced.

The utility model discloses a wire tightening mechanism of a linear cutting machine tool, relates to the field of linear cutting machine tools, and aims to solve the problems that the elastic force of a spring changes along with the telescopic degree of the spring, so that the tensile force of an electrode wire changes, and the electrode wire cannot be tightened by constant tensile force. According to the technical scheme, one end, close to a thread rolling cylinder, of a thread feeding frame is fixedly provided with a gravity thread tightening structure, the gravity thread tightening structure comprises a thread tensioning panel fixedly arranged at one end, close to the thread rolling cylinder, of the thread feeding frame, the thread tensioning panel is fixedly provided with a thread feeding guide wheel, and the thread tensioning panel is provided with a vertical sliding groove in a penetrating mode; a guide wheel is fixedly arranged at the end, close to the wire expansion panel, of the wire feeding frame, and the outer edges of the two sides of the wire outlet guide wheel are attached to the outer edge of the wire feeding guide wheel and the outer edge of the guide wheel in the vertical direction correspondingly. Therefore, continuity and stability of the linear cutting machining process are guaranteed, and the cutting quality is improved.

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 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 invention discloses an automatic wire threading device and a medium-speed wire cutting machine tool. The automatic wire threading device comprises a base body, the base body is provided with a first wire threading channel, a second wire threading channel, a mounting hole and a third wire threading channel, the first wire threading channel is located above the second wire threading channel, and the third wire threading channel is located below the second wire threading channel; the mounting hole is located between the second wire penetrating channel and the third wire penetrating channel and communicates with the second wire penetrating channel and the third wire penetrating channel. The two transmission wheels are located between the first wire penetrating channel and the second wire penetrating channel; the first driving mechanism is in transmission connection with at least one of the two transmission wheels; the second driving mechanism is in transmission connection with at least one of the two transmission wheels; and the third driving mechanism is provided with a guide wheel, the guide wheel is rotatably arranged in the mounting hole, and the guide wheel and the inner circumferential surface of the mounting hole are arranged to jointly guide the silk thread penetrating to the mounting hole from the second silk penetrating channel to be conveyed to the third silk penetrating channel. The automatic silk threading device is short in silk threading time and high in efficiency.

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 invention discloses a high-speed wire cutting machine tool which comprises a machine tool body, a wire cutting machine head and an anti-vibration wire frame, the wire cutting machine head is fixedly installed on the machine tool body, the anti-vibration wire frame comprises a guide plate, a movable guide plate and a walking wheel, the guide plate is provided with a fixed guide wheel, the movable guide plate is provided with an abutting wheel, the inner side of the abutting wheel is provided with a vibration sensor, and the vibration sensor is connected with the movable guide plate. The output end of the vibration sensor is electrically connected with the controller; the anti-vibration wire frame is further provided with a flexible adjusting assembly, and the flexible adjusting assembly comprises a linear guide bar, a driving rod and a pressing cap sliding seat. Through the elastic supporting and sliding adjusting functions of the anti-vibration wire frame and the feedback adjusting and magnetic flexible locking functions of the flexible adjusting assembly, automatic adjustment and vibration energy dissipation reduction of the tension of the electrode wire are achieved, vibration of the electrode wire in the wire moving process is effectively reduced, constant tension control and cutting precision of wire moving are ensured, and the wire moving quality is improved. And the operation stability and the cutting quality of the machine tool are improved.

The invention discloses a side-flow type electrolytic machining device and method for sealing a casing cavity, an electrolytic machining machine tool comprises a machine tool rotary table and a machine tool spindle, the electrolytic machining device comprises a clamping assembly, a clamping assembly, a clamping assembly and a clamping assembly, the clamping assembly is used for clamping a casing workpiece and fixing the casing workpiece to the machine tool rotary table, and the machine tool rotary table is connected with the positive electrode of a power source; the cathode assembly is connected with the machine tool spindle and arranged on one side of the cartridge receiver in the radial direction of the cartridge receiver so as to form a machining gap with the outer surface of the cartridge receiver, and the machine tool spindle is connected with the negative electrode of the power source; the sealing assembly comprises a sealing sleeve and a pressing mechanism, the sealing sleeve is provided with an inner cavity, a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are located on the two sides of the sealing assembly respectively and communicate with the inner cavity, and the sealing assembly is arranged on the cathode assembly in a sleeving mode so that the machining end of the cathode assembly can be located in the inner cavity; the pressing mechanism is used for enabling the sealing assembly to be pressed and sealed on the outer surface of the casing so as to seal the inner cavity, and the liquid inlet is used for introducing electrolyte to flow through the machining gap and be discharged through the liquid outlet.

The invention relates to the technical field of wire cutting machines, and provides a roller device convenient to disassemble and assemble and a disassembling and assembling method. The assembly parts are arranged at the two ends of the roller; the assembly part extends outwards to be provided with a threaded section, and an abutting groove hole is formed in the end, away from the roller, of the threaded section. Each assembly part is connected with a jacking assembly, each jacking assembly comprises an assembly main body and a jacking main body rotationally arranged on the assembly main body, the jacking main body is provided with a jacking plug inserted into the jacking slotted hole, a nut part is rotationally arranged outside the jacking plug, and the nut part is in threaded connection with the threaded section; the driving mechanism is connected with the propping main body of any propping component; and the assembling main body of the jacking assembly at one end far away from the driving mechanism is connected with the supporting frame through an elastic structure. The roller has the advantages that only the roller needs to be disassembled and assembled during disassembly and replacement, the roller does not need to be disassembled together with a driving mechanism, the whole disassembly and replacement process is simpler and more convenient, and the disassembly and replacement efficiency of the roller can be improved.

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.

The present invention discloses a double-wire wire cutting machine and a method of using the same, and belongs to the technical field of electrode wire cutting equipment. The double-wire wire cutting machine comprises: a first wire source device, a second wire source device, a tensioning device, a wire changing and feeding device, a wire threading device and a first wire conveying device are installed on a frame, a wire clamping device is installed on the second wire source device, a wire threading device is arranged between the wire changing and feeding device and the second wire source device, and a first wire conveying device is arranged on a side of the second wire source device away from the wire threading device, so that the first electrode wire extends from the first wire source device to the wire changing and feeding device, and the second electrode wire extends from the second wire source device through the tensioning device to the wire changing and feeding device, and the wire changing and feeding device is used to convey the first electrode wire or the second electrode wire into the wire threading device. The present invention can achieve the replacement of the first electrode wire and the second electrode wire through the cooperation of the tensioning device, the wire changing and feeding device, the wire threading device, the wire clamping device and the second wire conveying device.

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 invention discloses high-stability automatic wire dismounting and threading wire cutting equipment, which belongs to the technical field of wire cutting and comprises a rack, a wire winding and unwinding mechanism used for winding and unwinding a wire is mounted on the left side of the rack, and a wire tensioning mechanism used for adjusting the tightness of the wire is mounted on the middle side of the rack. A silk thread vertical conveying mechanism used for guiding silk threads to be conveyed downwards and assisting in threading is installed on the upper side of the machine frame, and a workpiece driving mechanism used for clamping and driving a workpiece to move is installed on the right side of the machine frame. A silk thread transverse conveying mechanism used for receiving silk threads penetrating through the workpiece and conveying the silk threads to the silk thread winding and unwinding mechanism is installed on the lower side of the rack. In this way, when a silk thread penetrates through a workpiece and is bent, the silk thread can be normally clamped on the lower guide wheel for silk thread conveying, the silk thread penetrating stability is improved, pipes can be rapidly replaced to conduct perforation of different sizes and conveying of silk threads of different thicknesses, and the silk threads are rapidly fixed to a take-up barrel for take-up.

A numerical control wire feeding mechanism for an automatic wire penetrating numerical control wire cut electrical discharge machining tool comprises a base plate, a wire feeding wheel mechanism and a pressing wheel mechanism, the wire feeding wheel mechanism comprises a wire feeding wheel, a wire feeding wheel shaft, a driving gear and a wire feeding wheel driving mechanism, and the pressing wheel mechanism comprises a pressing wheel, a pressing wheel shaft and a driven gear. The mechanism comprises a main swing arm, an auxiliary swing arm, a main rotating swing shaft, an auxiliary rotating swing shaft, a main push pin, an auxiliary push pin, a push-pull block, a push-pull power mechanism and an elastic component. According to the scheme, the wire feeding wheel can be accurately fed to a fixed wire feeding position, the certainty of the wire feeding center position is guaranteed, the pressure of the pressing wheel on the electrode wire during wire feeding can be adjusted through the adjusting screw, and the requirement for automatic wire feeding is met. The defects that in the prior art, the wire feeding position is uncertain, the wire feeding pressure is inconvenient to adjust, the wire feeding wheel and the electrode wire are prone to slipping in the wire feeding process, and wire feeding is unreliable are overcome.

The invention discloses an automatic threading wire cutting machine, and belongs to the field of wire cutting equipment. The automatic threading wire cutting machine comprises a rack, a wire source device, a lifting device, a threading device, an upper wire guide piece, a sleeve and a sensor, the wire source device, the lifting device and the threading device are installed on the rack, the upper wire guide piece is installed on the lifting device, the sleeve is arranged on an upper wire guide rod in a lifting and sleeving mode, and the sensor is arranged at the position matched with the sleeve. The lifting device is used for driving the upper wire guide piece and the sleeve to ascend and descend, and when the lifting device enables the distance between the end of the upper wire guide piece and the workpiece to reach the preset distance, the sleeve is connected with the workpiece to trigger the sensor. According to the invention, the sensor is matched with the sleeve to detect the positions of the upper wire guide piece and the workpiece under the condition that the upper wire guide piece is not connected with the workpiece, so that the probability of deviation of the bottom of the upper wire guide piece, which is provided with the eye mold, is reduced; the problem that in the prior art, due to the fact that an eye die deviates easily, the linear cutting machining precision of automatic wire penetrating is reduced is solved.

The invention discloses a medium-speed wire cutting device with a wire tensioning mechanism, and relates to the technical field of medium-speed wire cutting, the medium-speed wire cutting device comprises a machine tool, the upper surface of the machine tool is fixedly connected with a first mounting plate, a second mounting plate and a portal frame in sequence from front to back, the first mounting plate is provided with a wire feeding assembly, the second mounting plate is provided with a wire tensioning assembly, and the portal frame is provided with a wire tensioning mechanism. An adjusting assembly is arranged between the portal frame and the wire tensioning assembly. According to the medium-speed wire cutting device with the wire tensioning mechanism, medium-speed wire cutting is conducted on a workpiece by arranging the wire walking assembly, when the wire walking assembly conducts cutting, the adjusting assembly pulls the wire tensioning assembly passively, the wire tensioning assembly adjusts a wire in a self-adaptive mode, the tension of the wire is uniform and constant, and the wire cutting efficiency is improved. And the influence on processing is reduced.