Intelligent wire cut electrical discharge machining device

Abstract

The invention relates to the technical field of electric spark cutting, and discloses an intelligent electric spark wire cutting device which comprises a machine box, an intelligent power supply box is installed on the outer side face of the machine box, a feeding table is connected to the front end of the machine box, two sets of supports are symmetrically fixed to the feeding table, and a positioning plate is riveted to the rear end of the machine box; the two sets of supports are connected through lead screws and positioning plates respectively, and each set of lead screws is movably provided with a driving feeding tool. An intercepting filter screen is designed to intercept a large number of electric corrosion products to stay in a liquid receiving cover, to-be-recycled insulating liquid in a waste liquid tank is prevented from being polluted, a rotating air cylinder is periodically started, four sets of rotating bases are driven to rotate, a material collecting plate leaves the position of a discharging opening and moves downwards in an arc mode, and connecting pieces make corresponding contact with respective cam parts; the spring steel part deforms and then resets and shakes, the material collecting plate vibrates, all residual waste materials on the material collecting plate are poured out, the purpose of automatic impurity discharging is achieved, time and labor are saved, the impurity discharging effect is remarkably improved, and residues are avoided.

Description

Technical Field

[0001] This invention relates to the field of electrical discharge machining (EDM) technology, and in particular to an intelligent wire EDM device. Background Technology

[0002] Electrical discharge machining (EDM) is a high-precision special machining technology that utilizes the principle of electrical discharge corrosion. A high-frequency pulse voltage is applied between the electrode wire (usually copper, molybdenum, or brass wire) and the workpiece to form an ionization channel, generating instantaneous high temperatures (up to 5000 degrees Celsius or more). This causes localized melting and vaporization of the workpiece material, and the conductive material is cut through controlled pulse discharge. It is particularly suitable for machining complex shapes, high hardness, or micro-parts, such as hardened steel, cemented carbide, and some aerospace cables, and has the advantages of high precision and burr-free machining.

[0003] Existing wire electrical discharge machining (EDM) devices have several technical defects. First, whether it's fast or slow wire EDM, the molybdenum wire moves significantly with the conductive module. Under the combined effects of reciprocating inertia, cutting force, and thermal expansion and contraction, the tensioned molybdenum wire gradually loosens after a period of cutting, causing it to vibrate during operation and affecting the cutting effect. Second, molybdenum wire cutting requires coolant to cover the surrounding area, which is usually released from the top of the molybdenum wire using a drain trough. However, due to the unstable flow rate in the supply pipe and the lack of guidance in the direction of the water flow from the drain trough, some of the coolant is scattered and cannot be concentrated on the molybdenum wire. This results in uneven coverage of the coolant around the molybdenum wire during cutting, affecting the cutting effect and causing pollution and waste inside the machine.

[0004] In summary, considering that existing facilities cannot meet the needs of work, we propose an intelligent wire EDM device. Summary of the Invention

[0005] The main objective of this invention is to provide an intelligent wire electrical discharge cutting device that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An intelligent wire EDM device includes a chassis with an intelligent power supply box mounted on its outer side. A top mount is located on the top of the chassis. A feeding platform is connected to the front of the chassis, and two sets of supports are symmetrically fixed on the feeding platform. A positioning plate is riveted to the rear of the chassis. The two sets of supports are connected by lead screws and the positioning plate, respectively. First bearing seats are installed at both ends of the two sets of lead screws. One set of lead screws extends into the support and is connected to a lead screw motor via a coupling. Both sets of lead screws extend out of the positioning plate and are fitted with sprockets. The two sets of sprockets are connected by a chain for transmission. The sprockets and chain are located inside a protective shell. The two sets of supports are also fixed by horizontal guide rods and the positioning plate, respectively.

[0007] As a preferred embodiment of the intelligent wire EDM device of the present invention, each set of lead screws is movably equipped with an active feeding fixture, the active feeding fixture including a multi-station fixture table, a lead screw nut sleeve acting on the lead screw is installed in the middle of the multi-station fixture table, a limiting sliding hole for a horizontal guide rod to pass through is opened through the corner of the multi-station fixture table, and a feeding station groove acting on the workpiece is equidistantly arranged on the upper end surface of the multi-station fixture table, the number of the feeding station grooves is preferably 3-8 sets, several sets of lower clamping wheels are installed inside each set of feeding station grooves, the number of the lower clamping wheels is preferably 2-3 sets, the lower clamping wheels include an annular clamping surface, a ramp is provided in the feeding station groove and on one side of the lower clamping wheel, and discharge channels corresponding to the ramp are provided on both outer sides of the machine housing.

[0008] In a preferred embodiment of the intelligent wire EDM device of the present invention, a compression cylinder is vertically mounted on the upper end of the multi-station fixture via a mounting bracket. A cylinder rod is movably disposed downward inside the compression cylinder. A pressure plate is welded to the lower end of the cylinder rod. Four sets of vertical guide rods are symmetrically installed at the corners of the pressure plate. The multi-station fixture has guide rod holes corresponding to the vertical guide rods inside, and the number of guide rod holes is 4 sets. Several sets of upper clamping wheels corresponding to the lower clamping wheels are evenly installed on the lower end of the pressure plate. The number of upper clamping wheels is preferably 2-3 sets. Each upper clamping wheel includes an annular clamping surface. The lower clamping wheel and the upper clamping wheel work together on the workpiece to be cut. Both the lower clamping wheel and the upper clamping wheel are driven by a wheel motor.

[0009] In a preferred embodiment of the intelligent wire EDM device of the present invention, a liquid supply seat is riveted to the middle position of the lower end face of the top seat. A liquid storage tank is installed inside the liquid supply seat. A liquid filling pipe acting on the liquid storage tank is installed at the upper end of the liquid supply seat. A liquid storage trough is opened inside the liquid storage tank. The liquid storage trough contains a large amount of insulating liquid. A lifting metering cylinder is movably arranged in the middle of the liquid storage trough. A metering cavity is opened inside the lifting metering cylinder. A guide arc is provided around the upper end face of the lifting metering cylinder. The inside of the metering cavity and the pressure plug are slidably sealed. A positioning plug rod is vertically installed at the upper end of the pressure plug. The positioning plug rod extends upward and is fixedly connected to the liquid supply seat.

[0010] As a preferred embodiment of the intelligent wire EDM device of the present invention, the liquid storage tank is symmetrically provided with limit supports on both inner sides, a hydraulic cylinder is vertically installed at the upper end of the limit supports, a hydraulic rod is movably arranged downward inside the hydraulic cylinder, the hydraulic rod is located inside the limit supports, and connecting arms are welded to both outer sides of the lifting metering cylinder, the connecting arms extend into the limit supports and are connected to the lower end of the hydraulic rod.

[0011] In a preferred embodiment of the intelligent wire EDM device of the present invention, the lower end of the lifting quantitative cylinder is connected to the bottom of the liquid storage tank via a corrugated telescopic tube. A velocity pipe is connected to the lower end of the corrugated telescopic tube via a flange. The velocity pipe extends downward through the bottom of the liquid storage tank. The lower end of the velocity pipe is obliquely inserted into a vortex bucket. A vortex motion groove is formed inside the vortex bucket. A tangent opening communicating with the velocity pipe is formed on the wall of the vortex motion groove. A liquid outlet communicating with the vortex motion groove is formed at the bottom of the vortex bucket. Several sets of guide grooves are evenly distributed on the inner wall of the liquid outlet. A sealing cover is installed on the top of the vortex bucket. An upper pressure wire clip acting on the passive molybdenum wire is provided on the sealing cover. The passive molybdenum wire extends vertically downward from the liquid outlet. As a preferred embodiment of the intelligent wire EDM device of the present invention, a waste liquid tank is provided at the bottom center of the chassis, a liquid receiving cover is fixed in the middle of the waste liquid tank, a number of drain holes are evenly distributed outward inside the liquid receiving cover, the number of drain holes is not less than 5, an adjustment seat is provided at the lower end of the liquid receiving cover and located on the lower end face of the chassis, and a tensioning wheel is rotatably arranged inside the adjustment seat.

[0012] In a preferred embodiment of the intelligent wire EDM device of the present invention, an axle is installed through the middle of the tensioning wheel. One end of the axle is connected to the inner wall of the adjusting seat through a damping bearing seat. A large pulley is sleeved on the other end of the axle. A small pulley is provided on one side of the large pulley and inside the adjusting seat. The small pulley and the large pulley are connected and driven by a connecting belt. The small pulley is sleeved on the output shaft of the adjusting motor. The adjusting motor is installed on the outer side of the adjusting seat.

[0013] In a preferred embodiment of the intelligent wire EDM device of the present invention, the tensioning wheel has a tensioning take-up groove on its surface, the passive molybdenum wire passes downward through the liquid receiving cover and is wound in the tensioning take-up groove, the tensioning wheel is equipped with a downward pressure wire buckle acting on the end of the passive molybdenum wire, a pressure sensor is installed inside the tensioning wheel, and the pressure-sensitive element on the pressure sensor extends into the lower oblique part of the tensioning take-up groove.

[0014] In a preferred embodiment of the intelligent wire EDM device of the present invention, the liquid receiving hood and the adjusting seat are connected by a discharge platform. Several sets of intercepting filters are installed around the inner wall of the liquid receiving hood, preferably 2-4 sets. A middle seat is fixedly extended upward from the bottom of the liquid receiving hood. Four sets of discharge ports are evenly opened at the bottom of the liquid receiving hood. A collecting plate is movably installed on each set of discharge ports. There are 4 sets of collecting plates. A connecting piece is connected upward to one side of the collecting plate. The connecting piece includes a spring steel part. A rotating seat is installed at the upper end of the connecting piece. Short shafts are welded to both ends of the rotating seat. The short shafts are connected to the inner wall of the middle seat through a second bearing seat. A rotary cylinder is installed on one set of the short shafts extending outward.

[0015] As a preferred embodiment of the intelligent wire EDM device of the present invention, a central disc is fixed at the upper part of the unloading platform. A cam portion acting on the spring steel part is symmetrically installed on the surface of the central disc. The number of cam portions is 4. A through hole for the passive molybdenum wire to pass through is opened in the middle of the central disc. Unloading channels communicating with the unloading port are symmetrically opened on the outer side of the unloading platform.

[0016] This invention provides an intelligent wire electrical discharge machining (EDM) device, which has the following significant improvements and advantages compared with the prior art: Start the lead screw motor to drive one set of lead screws to rotate, and through a series of transmissions, make the two sets of lead screws rotate synchronously. This causes the two sets of active feeding fixtures to move linearly along the direction of the lead screws and enter the machine housing to slowly approach the passive molybdenum wire for passive EDM cutting. Compared with the traditional active wire feeding structure, this reduces the force generated by the movement of the molybdenum wire, lowers the probability of molybdenum wire relaxation, and extends its service life.

[0017] When the extrusion cylinder is activated, the cylinder rod extends downward, causing the pressure plate to move downward. The upper clamping wheel slowly approaches the corresponding workpiece until the lower and upper clamping wheels work together on the workpiece. On the one hand, the workpiece is clamped and limited, achieving automatic positioning. On the other hand, the contact force between the clamping wheels and the workpiece causes them to move in opposite directions, generating a force that guides the cut workpiece outward and automatically discharges it, achieving automatic unloading and saving time and effort.

[0018] Two sets of hydraulic rods extend synchronously, and two sets of connecting arms first drive the lifting metering cylinder to a position below the liquid surface of the storage tank. The metering chamber is filled with insulating liquid to achieve precise metering and ensure that the liquid supply is the same each time. Then, the two sets of hydraulic rods extend and retract synchronously, and the two sets of connecting arms drive the lifting metering cylinder to rise, allowing the pressure plug to connect with the metering chamber. The plug slides at a constant speed in the metering chamber, squeezing the insulating liquid in the metering chamber. After being pressurized, the insulating liquid flows at high speed in sequence inside the corrugated telescopic tube and the velocity tube, automatically providing a stable flow rate and high-speed insulating liquid to the molybdenum wire structure.

[0019] The insulating liquid enters the tangential opening at a uniform speed from the swirl bucket, undergoes centrifugal motion along the inner wall of the bucket, and forms a downward-sloping surrounding fluid along the tangential direction around the inner wall of the bucket. The air in the middle of the sealed swirling motion tank is compressed, making the internal air pressure greater than the external pressure. Combined with the guiding effect of several sets of guide grooves, the insulating liquid moving to the outlet position is forced to accelerate downward in a straight line, uniformly and stably covering the molybdenum wire and the surrounding area, which helps to improve the cutting effect and reduce pollution and waste in the machine.

[0020] The design incorporates a filter screen to trap a large amount of electro-erosion products within the liquid receiving hood, preventing contamination of the insulating liquid awaiting recycling in the waste liquid tank. Then, a rotary cylinder is periodically activated, driving four sets of rotating seats to rotate. This causes the collecting plate to move downwards in an arc from the discharge port, tilting and emptying the electro-erosion waste. During this downward movement, the collecting plate contacts its respective cam section, deforming the spring steel section and then resetting and vibrating. This vibration causes the collecting plate to empty all remaining waste, achieving automatic waste removal. This process saves time and effort, significantly improves waste removal efficiency, and prevents residue buildup. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an intelligent wire electrical discharge cutting device according to the present invention, taken from one direction. Figure 2 This is a schematic diagram of the overall structure of the intelligent wire electrical discharge cutting device of the present invention from another direction; Figure 3 This is a schematic diagram of the internal structure of the chassis of the present invention from one direction; Figure 4 This is a schematic diagram of the internal structure of the chassis of the present invention from another direction; Figure 5 This is a schematic diagram of the transmission structure of the active feeding tooling of the present invention; Figure 6 This is a schematic diagram of the active material feeding tooling of the present invention in one direction; Figure 7 This is a schematic diagram of the active material feeding tooling of the present invention from another direction; Figure 8This is a schematic diagram showing the installation position of the passive molybdenum wire of the present invention; Figure 9 This is a schematic diagram of the internal structure of the liquid supply seat of the present invention; Figure 10 This is a schematic diagram of the lower end structure of the liquid storage tank of the present invention; Figure 11 This is a schematic diagram of the external structure of the lifting metering cylinder of the present invention; Figure 12 This is a cross-sectional view of the vortex bucket of the present invention; Figure 13 This is a schematic diagram of the transmission structure of the tensioner wheel of the present invention; Figure 14 This is a schematic diagram of the specific structure of the tensioning wheel of the present invention; Figure 15 This is a schematic diagram of the internal structure of the liquid receiving cover in Embodiment 2 of the present invention; Figure 16 This is a schematic diagram of the connection of the material collection plate of the present invention; Figure 17 This is a schematic diagram of the specific structure of the intermediate disk of the present invention.

[0022] In the diagram: 1. Chassis; 2. Feeding platform; 3. Top seat; 4. Intelligent power supply box; 5. Discharge channel; 6. Cutting part; 7. Passive molybdenum wire; 10. Support; 11. Positioning plate; 12. Lead screw; 13. First bearing seat; 14. Lead screw motor; 15. Horizontal guide rod; 16. Sprocket; 17. Chain; 18. Protective shell; 20. Active feeding fixture; 21. Multi-station fixture table; 22. Lead screw nut sleeve; 23. Limiting sliding hole; 24. Discharge station slot; 25. Lower clamping wheel; 26. Annular clamping surface; 27. Slope; 30. Mounting frame; 31. Extrusion cylinder; 32. Cylinder rod; 33. Pressure plate; 34. Vertical guide rod; 35. Guide rod hole; 36. Upper clamping wheel; 40. Liquid supply seat; 41. Liquid storage tank; 42. Liquid storage trough; 43. Lifting metering cylinder; 44. Metering chamber; 45. Guide arc; 46. Pressure plug; 47. Positioning plug rod; 48. Liquid filling pipe; 50. Limiting support frame; 51. Hydraulic cylinder; 52. 53. Hydraulic rod; 54. Connecting arm; 55. Corrugated telescopic tube; 66. Velocity flow tube; 67. Swirl bucket; 68. Sealing cover; 69. Swirl motion groove; 60. Tangent; 61. Liquid outlet; 62. Guide groove; 63. Upper pressure line buckle; 74. Waste liquid tank; 75. Liquid receiving cover; 76. Drain hole; 77. Adjusting seat; 78. Pressure sensor; 79. Pressure sensitive element; 80. Tensioning wheel; 81. Wheel axle; 82. Damping bearing seat; 83. Large pulley; 84. 4. Small pulley; 85. Adjusting motor; 86. Connecting belt; 87. Tensioning take-up groove; 88. Lower pressure wire buckle; 90. Unloading platform; 91. Intercepting filter screen; 92. Intermediate seat; 93. Unloading port; 94. Unloading channel; 100. Collecting plate; 101. Connecting piece; 102. Spring steel part; 103. Rotating seat; 104. Short shaft; 105. Second bearing seat; 106. Rotary cylinder; 110. Intermediate disc; 111. Cam part; 112. Perforation. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0024] like Figures 1-14As shown, this embodiment provides an intelligent wire EDM device, including a chassis 1. An intelligent power supply box 4 is installed on the outer side of the chassis 1. The intelligent power supply box 4 is equipped with a PLC controller for intelligent power supply. A top seat 3 is provided on the top of the chassis 1. A feeding platform 2 is connected to the front end of the chassis 1. Two sets of supports 10 are symmetrically fixed on the feeding platform 2. A positioning plate 11 is riveted to the rear end of the chassis 1. The two sets of supports 10 are connected to the positioning plate 11 by lead screws 12. A first bearing seat 13 is installed at both ends of the two sets of lead screws 12. One set of lead screws 12 extends into the support 10 and is connected to a lead screw motor 14 by a coupling. The lead screw motor 14 is a high-precision servo motor with strong control force.

[0025] Each of the two sets of lead screws 12 extending out of the positioning plate 11 is fitted with a sprocket 16. The two sets of sprockets 16 are connected and driven by a chain 17. Both the sprockets 16 and the chain 17 are located inside the protective shell 18, serving a storage function. Figures 3-5 As shown.

[0026] The two sets of supports 10 are also fixed by horizontal guide rods 15 and positioning plates 11, respectively. Figure 3 and Figure 4 As shown.

[0027] Furthermore, each set of lead screws 12 is movably equipped with an active feeding fixture 20, which includes a multi-station fixture table 21, such as... Figure 3 , Figure 4 and Figure 6 As shown.

[0028] Specifically, a lead screw nut sleeve 22 (containing a helical lead screw nut) is installed in the middle of the multi-station fixture 21, acting on the lead screw 12. Limiting sliding holes 23 are provided at the corners of the multi-station fixture 21 for the horizontal guide rod 15 to pass through, serving as limiting and guiding functions and improving the stability of the multi-station fixture 21's movement. The upper surface of the multi-station fixture 21 is equidistantly provided with feeding station slots 24 acting on the cutting workpiece 6. Each feeding station slot 24 contains several sets of lower clamping wheels 25, each including an annular clamping surface 26. The size of the annular clamping surface 26 is adapted to the cutting workpiece 6. Figure 6 and Figure 7 As shown.

[0029] The material feeding station trough 24 has a ramp 27 located on one side of the lower clamping wheel 25. The two outer sides of the machine housing 1 have discharge channels 5 corresponding to the ramp 27. The two sides of the machine housing 1 have openings inside for the cutting parts 6 to extend out. Figure 1 and Figure 6 As shown.

[0030] Furthermore, a compression cylinder 31 is vertically mounted on the upper end of the multi-station tooling table 21 via a mounting bracket 30. A cylinder rod 32 is movably mounted downwards inside the compression cylinder 31. A pressure plate 33 is welded to the lower end of the cylinder rod 32. Four sets of vertical guide rods 34 are symmetrically installed at the corners of the pressure plate 33. Guide rod holes 35 corresponding to the vertical guide rods 34 are opened inside the multi-station tooling table 21. Figure 6 and Figure 7 As shown.

[0031] Among them, several sets of upper clamping wheels 36 corresponding to the lower clamping wheels 25 are evenly installed at the lower end of the pressure plate 33. The upper clamping wheels 36 include annular clamping surfaces 26. The lower clamping wheels 25 and the upper clamping wheels 36 work together on the cutting workpiece 6. Both the lower clamping wheels 25 and the upper clamping wheels 36 are driven by wheel motors. Both the lower clamping wheels 25 and the upper clamping wheels 36 have partially extended end faces, such as... Figure 6 and Figure 7 As shown.

[0032] Furthermore, a liquid supply seat 40 is riveted to the middle of the lower end face of the top seat 3. A liquid storage tank 41 is installed inside the liquid supply seat 40. A liquid inlet pipe 48 is installed at the upper end of the liquid supply seat 40, which is used to replenish the insulating liquid. A liquid storage trough 42 is formed inside the liquid storage tank 41, which stores a large amount of insulating liquid. The insulating liquid also has cooling and lubricating functions, such as… Figure 8 and Figure 9 As shown.

[0033] The liquid storage tank 42 has a movable lifting metering cylinder 43 in the middle. The lifting metering cylinder 43 has a metering cavity 44 inside. A guide arc 45 is provided around the upper end face of the lifting metering cylinder 43, which slides to guide the pressure plug 46. The metering cavity 44 and the pressure plug 46 are slidably sealed. A positioning rod 47 is vertically installed at the upper end of the pressure plug 46, extending upwards and fixedly connected to the liquid supply seat 40. Figure 9 and Figure 11 As shown.

[0034] Furthermore, symmetrical limit supports 50 are provided on both inner sides of the liquid storage tank 41. A hydraulic cylinder 51 is vertically installed at the upper end of the limit support 50. A hydraulic rod 52 is installed downwardly inside the hydraulic cylinder 51. The hydraulic rod 52 is located inside the limit support 50. Connecting arms 53 are welded to both outer sides of the lifting metering cylinder 43. The connecting arms 53 extend into the limit support 50 and connect to the lower end of the hydraulic rod 52. Figure 9 and Figure 11 As shown.

[0035] Furthermore, the lower end of the lifting metering cylinder 43 is connected to the bottom of the liquid storage tank 42 via a corrugated telescopic tube 54. The corrugated telescopic tube 54 can extend and retract with the movement of the lifting metering cylinder 43. The lower end of the corrugated telescopic tube 54 is connected to a velocity pipe 55 via a flange. The velocity pipe 55 extends downward through the bottom of the liquid storage tank 41, and the lower end of the velocity pipe 55 is obliquely inserted into the vortex funnel 60. Figure 9 and Figure 10 As shown.

[0036] In this embodiment, the vortex bucket 60 has a vortex motion groove 62 inside, and a tangential opening 63 communicating with the velocity flow pipe 55 is opened on the wall of the vortex motion groove 62. The bottom of the vortex bucket 60 has a liquid outlet 64 communicating with the vortex motion groove 62. Several sets of guide grooves 65 are evenly distributed on the inner wall of the liquid outlet 64. The guide grooves 65 are vertically designed, and the swirling liquid is evenly distributed at the upper end of the guide grooves 65, such as... Figure 10 and Figure 12 As shown.

[0037] In this embodiment, a sealing cap 61 is installed on the top of the vortex bucket 60. The sealing cap 61 is equipped with an upper pressure wire buckle 66 that acts on the passive molybdenum wire 7. The passive molybdenum wire 7 extends vertically downwards from the liquid outlet 64. Figure 12 As shown.

[0038] Furthermore, a waste liquid tank 70 is provided at the bottom center of the chassis 1. A liquid receiving cover 71 is fixed in the middle of the waste liquid tank 70. Several sets of drain holes 72 are evenly distributed outward inside the liquid receiving cover 71. The drain holes 72 are positioned higher than the liquid level in the waste liquid tank 70. An adjusting seat 73 is provided at the lower end of the liquid receiving cover 71 and located on the lower end face of the chassis 1. A tensioning wheel 80 is rotatably mounted inside the adjusting seat 73. Figure 1 , Figure 8 and Figure 13 As shown.

[0039] The tensioning wheel 80 has a centrally mounted axle 81. One end of the axle 81 is connected to the inner wall of the adjusting seat 73 via a damping bearing seat 82. The other end of the axle 81 is fitted with a large pulley 83. A small pulley 84 is located on one side of the large pulley 83 and inside the adjusting seat 73. The small pulley 84 and the large pulley 83 are connected by a connecting belt 86. The small pulley 84 is fitted onto the output shaft of the adjusting motor 85. The adjusting motor 85 has precise adjustment capabilities and is mounted on the outer side of the adjusting seat 73. Figure 13 and Figure 14 As shown.

[0040] The tensioning wheel 80 has a tensioning take-up groove 87 on its surface. The passive molybdenum wire 7 passes downward through the liquid receiving cover 71 and is wound inside the tensioning take-up groove 87. The tensioning wheel 80 is equipped with a downward pressure clip 88 that acts on the end of the passive molybdenum wire 7. Figure 13 and Figure 14 As shown.

[0041] A pressure sensor 74 is installed inside the tensioning wheel 80, and the pressure-sensitive element 75 on the pressure sensor 74 extends into the lower oblique part of the tensioning take-up groove 87, such as... Figure 14 As shown.

[0042] Furthermore, all parts and mechanisms in this device that come into contact with the molybdenum wire employ conventional insulation design.

[0043] In this embodiment, several sets of cutting parts 6 to be cut are first placed into the corresponding feeding station slots 24 in sequence (the part to be cut on the cutting part 6 is aligned with the passive molybdenum wire 7) and contacted with the annular clamping surface 26 of the lower clamping wheel 25. At this time, the extrusion cylinder 31 is activated, and the cylinder rod 32 extends downward to drive the pressure plate 33 to move downward. The upper clamping wheel 36 slowly approaches the corresponding cutting part 6 until the lower clamping wheel 25 and the upper clamping wheel 36 work together on the cutting part 6 to limit and clamp the cutting part 6.

[0044] Then start the lead screw motor 14, drive one set of lead screws 12 to rotate, and connect and transmit through two sets of sprockets 16 and chains 17, so that the two sets of lead screws 12 rotate synchronously, and the two sets of active feeding fixtures 20 move linearly along the direction of lead screws 12 (the threads on the lead screws 12 and the lead screw nut sleeves 22 of the multi-station fixture table 21 interact), and enter the machine box 1 to slowly approach the passive molybdenum wire 7.

[0045] At this point, the two sets of hydraulic rods 52 of the two sets of hydraulic cylinders 51 extend synchronously. The two sets of connecting arms 53 first drive the lifting metering cylinder 43 to descend below the liquid surface of the storage tank 42, filling the metering chamber 44 with insulating liquid. Then, the two sets of hydraulic rods 52 extend and retract synchronously, and the two sets of connecting arms 53 drive the lifting metering cylinder 43 to rise, making the upper end of the lifting metering cylinder 43 higher than the liquid surface. The pressure plug 46 then aligns with the metering chamber 44 and slides at a uniform speed within the metering chamber 44, squeezing the insulating liquid inside. This pressure causes the insulating liquid to open the check valve and flow at high speed through the corrugated telescopic tube 54 and the velocity flow tube 55, ultimately... The insulating liquid enters the tangential opening 63 at a uniform speed from the tangential direction of the swirl bucket 60, undergoes centrifugal motion along the inner wall of the bucket, and forms a downward-sloping surrounding fluid (similar to a spiral) around the inner wall of the bucket, which is the swirling phenomenon. The air in the middle of the sealed swirling motion tank 62 is compressed, making the internal air pressure greater than the external pressure. Combined with the guiding effect of several sets of guide grooves 65, the insulating liquid moving to the outlet 64 is accelerated and moves downward in a straight line, evenly covering the passive molybdenum wire 7 and the surrounding area. Finally, the insulating liquid drips continuously into the liquid receiving cover 71 for collection, and then is introduced into the waste liquid tank 70 through several sets of drain holes 72.

[0046] The cutting piece 6 in the feeding station slot 24 is connected to the positive electrode wire, becoming a positive load. The passive molybdenum wire 7 is connected to the negative electrode wire of the pulse power supply (according to conventional wiring design). When the cutting piece 6 approaches the position of the passive molybdenum wire 7, the distance between the two is close enough, and the pulse voltage generated by the pulse power supply will break down the insulating liquid with insulating properties, forming an instantaneous discharge channel between the passive molybdenum wire 7 and the cutting piece 6, generating a high-temperature electric spark to cut the cutting piece 6. During the pulse interval, the insulating liquid fills back into the discharge channel, so that the next pulse can break down and discharge again between the two electrodes. The insulating liquid has the function of removing electro-erosion products in the gap and cooling the discharge area.

[0047] After the passive molybdenum wire 7 has cut several sets of cutting parts 6 in sequence, the active feeding fixture 20 leaves the discharge area. At this time, the wheel motors of the lower clamping wheel 25 and the upper clamping wheel 36 are turned on respectively. The two move in opposite directions and generate force to guide the cutting parts 6 cut in half, so that the cutting parts 6 enter the ramp 27 and are automatically discharged outward along the corresponding discharge channel 5.

[0048] Due to thermal expansion and contraction or material plasticity, the passive molybdenum wire 7, which is under tension, will loosen after a period of use. At this time, the contact force between the pressure-sensitive element 75 and the passive molybdenum wire 7 located in the tension take-up groove 87 weakens, triggering the alarm value. This causes the pressure sensor 74 to work, outputting a signal to start the regulating motor 85, which drives the small pulley 84 to rotate. Through the connecting belt 86, the large pulley 83 is synchronously decelerated and further rotates counterclockwise slightly, so that the coaxial tensioning wheel 80 tensions the passive molybdenum wire 7 to meet the working requirements. Example 2

[0049] Based on Example 1, the electro-erosion products after electrical discharge cutting will enter the waste liquid tank 70 through the drain hole 72 along with the insulating liquid. Some of the electro-erosion products sink to the bottom of the tank and accumulate, making them difficult to clean. Some of the electro-erosion products dissolve in the insulating liquid, affecting the subsequent recycling of the insulating liquid. To solve the above technical problems, we have designed the following solution, such as... Figures 15-17 As shown.

[0050] The liquid receiving hood 71 and the adjusting seat 73 are connected by a discharge platform 90. Several sets of intercepting filter screens 91 (replacing the drain holes 72) are installed around the inner wall of the liquid receiving hood 71. The intercepting filter screens 91 intercept and filter electro-erosion products. Electro-erosion products temporarily retained on the intercepting filter screens 91 are dispersed by the flushing effect of the liquid above. A middle seat 92 extends upwards from the bottom of the liquid receiving hood 71. Four sets of discharge ports 93 are evenly distributed at the bottom of the liquid receiving hood 71. Each set of discharge ports 93... The upper part is equipped with a collecting plate 100, and a sealing gasket is provided around the discharge port 93. A connecting piece 101 is connected upward to one side of the collecting plate 100. The connecting piece 101 includes a spring steel part 102. A rotating seat 103 is installed at the upper end of the connecting piece 101. Short shafts 104 are welded to both ends of the rotating seat 103. The short shafts 104 are connected to the inner wall of the intermediate seat 92 through a second bearing seat 105. A set of short shafts 104 extends outward and is equipped with a rotary cylinder 106. Figure 15 and Figure 16 As shown.

[0051] A central disc 110 is fixed at the upper part of the unloading platform 90. Cams 111, which act on the spring steel section 102, are symmetrically mounted on the surface of the central disc 110. A through hole 112 for the passive molybdenum wire 7 to pass through is opened in the center of the central disc 110. Unloading channels 94, which communicate with the unloading port 93, are symmetrically opened on the outer side of the unloading platform 90. Figures 15-17 As shown.

[0052] In this embodiment, after the insulating liquid falls into the liquid receiving cover 71, it accumulates at the bottom. As the liquid level rises, it is discharged into the waste liquid tank 70 through several sets of intercepting filters 91. A large amount of electro-erosion products are intercepted by the intercepting filters 91 and accumulate on the four sets of collecting plates 100 at the bottom of the liquid receiving cover 71. The rotary cylinder 106 is periodically started to drive the four sets of rotating seats 103 to rotate, causing the collecting plates 100 to move downward in an arc from the discharge port 93, tilting the collecting plates 100 and pouring out the electro-erosion waste. During the downward movement, the cams 111 on the connecting plate 101 and the middle disc 110 respectively contact each other, causing the spring steel part 102 to deform and then reset and vibrate, thereby causing the collecting plates 100 to vibrate and pour out all the waste remaining on the collecting plates 100. The electro-erosion waste enters the discharge platform 90 and is discharged out of the machine box 1 through the two sets of discharge channels 94 respectively.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent wire cut electrical discharge machining device, comprising a cabinet (1), characterized in that: The top of the cabinet (1) is provided with a top seat (3), the front end of the cabinet (1) is connected with a feeding table (2), two groups of supports (10) are symmetrically fixed on the feeding table (2), the rear end of the cabinet (1) is riveted with a positioning plate (11), the two groups of supports (10) are connected with the positioning plate (11) by the lead screws (12), the lead screws (12) are sleeved with chain wheels (16) outside the positioning plate (11), the two groups of chain wheels (16) are connected and driven by a chain (17), the lead screws (12) are movably provided with driving feeding tools (20), the driving feeding tools (20) comprise multi-station tool tables (21); The lower end surface of the top seat (3) is riveted with a liquid supply seat (40), the liquid supply seat (40) is internally provided with a liquid storage tank (41), the liquid storage tank (41) is internally provided with a liquid storage groove (42), a large amount of insulating liquid is stored in the liquid storage groove (42), a lifting quantitative cylinder (43) is movably arranged in the middle of the liquid storage groove (42), the lifting quantitative cylinder (43) is internally provided with a quantitative cavity (44), a guide arc portion (45) is arranged on the upper end surface of the lifting quantitative cylinder (43), the quantitative cavity (44) is in sliding sealing with a pressure plug (46), the upper end of the pressure plug (46) is vertically provided with a positioning plug rod (47), the positioning plug rod (47) is fixedly connected with the liquid supply seat (40) and extends upward; The lower end of the lifting quantitative cylinder (43) is connected with the bottom of the liquid storage groove (42) by a corrugated expansion pipe (54), the lower end of the corrugated expansion pipe (54) is connected with a high-speed flow pipe (55) by a flange, the lower end of the high-speed flow pipe (55) is obliquely cut and inserted into a rotational flow hopper (60), the rotational flow hopper (60) is internally provided with a rotational flow movement groove (62), the groove wall of the rotational flow movement groove (62) is provided with a tangent port (63) in communication with the high-speed flow pipe (55), the bottom of the rotational flow hopper (60) is provided with a liquid outlet (64) in communication with the rotational flow movement groove (62), the inner wall of the liquid outlet (64) is uniformly provided with a plurality of groups of flow guide grooves (65), the top of the rotational flow hopper (60) is provided with a sealing cover (61), the sealing cover (61) is provided with an upper pressing line buckle (66) for the passive molybdenum wire (7), the passive molybdenum wire (7) vertically extends downward from the liquid outlet (64).

2. The intelligent WEDM device according to claim 1, wherein: The middle part of the multi-station tooling table (21) is provided with a screw nut sleeve (22) acting on the screw rod (12), the corner position of the multi-station tooling table (21) is provided with a limiting sliding hole (23) through which the horizontal guide rod (15) passes, the upper end surface of the multi-station tooling table (21) is provided with a feeding station groove (24) acting on the cutting piece (6) at equal intervals, the inside of each group of the feeding station groove (24) is provided with a plurality of groups of lower material clamping wheels (25), the lower material clamping wheel (25) comprises an annular clamping surface (26), the inside of the feeding station groove (24) and located on one side of the lower material clamping wheel (25) is provided with a slope (27), and the two outer sides of the cabinet (1) are provided with a material discharging channel (5) corresponding to the slope (27).

3. The intelligent WEDM device according to claim 2, wherein: The upper end of the multi-station tooling table (21) is vertically provided with an extrusion air cylinder (31) through a mounting frame (30), the inside of the extrusion air cylinder (31) is downwardly movably provided with an air cylinder rod (32), the lower end of the air cylinder rod (32) is welded with a pressing plate (33), the lower end of the pressing plate (33) is uniformly provided with a plurality of groups of upper material clamping wheels (36) corresponding to the lower material clamping wheels (25), the upper material clamping wheel (36) comprises an annular clamping surface (26), the lower material clamping wheel (25) and the upper material clamping wheel (36) jointly act on the cutting piece (6), and the lower material clamping wheel (25) and the upper material clamping wheel (36) are both driven by a wheel motor.

4. The intelligent WEDM device according to claim 1, wherein: The two inner sides of the liquid storage tank (41) are symmetrically provided with limiting support frames (50), the upper end of the limiting support frame (50) is vertically provided with a hydraulic cylinder (51), the inside of the hydraulic cylinder (51) is downwardly movably provided with a hydraulic rod (52), the hydraulic rod (52) is located in the inside of the limiting support frame (50), and the two outer sides of the lifting quantitative cylinder (43) are welded with connecting arms (53) extending into the inside of the limiting support frame (50) and connected with the lower end of the hydraulic rod (52).

5. The intelligent WEDM device according to claim 1, wherein: The bottom middle position of the cabinet (1) is provided with a waste liquid tank (70), the middle part of the waste liquid tank (70) is fixed with a liquid receiving cover (71), the inside of the liquid receiving cover (71) is uniformly distributed with a plurality of groups of liquid discharging holes (72), the lower end of the liquid receiving cover (71) and located on the lower end surface of the cabinet (1) is provided with an adjusting seat (73), and the adjusting seat (73) is rotatably provided with a tensioning wheel (80).

6. The intelligent WEDM device according to claim 5, wherein: The middle part of the tensioning wheel (80) is provided with a wheel shaft (81) penetrating through, one end of the wheel shaft (81) is connected with the inner wall of the adjusting seat (73) through a damping bearing seat (82), the other end of the wheel shaft (81) is sleeved with a large belt wheel (83), one side of the large belt wheel (83) and located in the adjusting seat (73) is provided with a small belt wheel (84), the small belt wheel (84) and the large belt wheel (83) are connected and driven by a connecting belt (86), and the small belt wheel (84) is sleeved on the output shaft of the adjusting motor (85).

7. The intelligent WEDM device according to claim 6, wherein: The wheel surface of the tensioning wheel (80) is provided with a tensioning take-up groove (87), the passive molybdenum wire (7) passes through the liquid receiving cover (71) and winds in the tensioning take-up groove (87), the tensioning wheel (80) is provided with a downward pressing wire buckle (88) acting on the end of the passive molybdenum wire (7), the inner of the tensioning wheel (80) is provided with a pressure sensor (74), and the pressure sensitive element (75) of the pressure sensor (74) extends into the inclined lower part of the tensioning take-up groove (87).

8. The intelligent WEDM device according to claim 5, wherein: The liquid receiving cover (71) and the adjusting seat (73) are connected by the discharging table (90), the inner wall of the liquid receiving cover (71) is provided with a plurality of groups of intercepting filter screens (91), the bottom of the liquid receiving cover (71) is upwardly extended and fixed with an intermediate seat (92), the bottom of the liquid receiving cover (71) is uniformly provided with four groups of discharging ports (93), and each group of the discharging ports (93) is movably provided with a material collecting plate (100).

9. The intelligent WEDM device according to claim 8, wherein: One side of the material collecting plate (100) is upwardly connected with a connecting sheet (101), the connecting sheet (101) comprises a spring steel part (102), the upper end of the connecting sheet (101) is provided with a rotating seat (103), both ends of the rotating seat (103) are welded with a short shaft (104), the short shaft (104) is connected with the inner wall of the intermediate seat (92) through a second bearing seat (105), and one group of the short shaft (104) is outwardly extended and provided with a rotary air cylinder (106).

10. The intelligent WEDM device according to claim 9, wherein: The inner of the discharging table (90) is fixed with an intermediate disc (110) at an upper position, the disc surface of the intermediate disc (110) is symmetrically provided with cam parts (111) acting on the spring steel parts (102) respectively, the middle part of the intermediate disc (110) is provided with a through hole (112) for the passive molybdenum wire (7) to pass through, and the outer side of the discharging table (90) is symmetrically provided with discharging channels (94) in communication with the discharging ports (93).

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