Immersion type electric spark perforating device and using method thereof

Abstract

The invention discloses an immersion type electric spark perforating device and a using method thereof, and relates to the technical field of perforating machining. The liquid immersion type electric spark perforating device comprises a machine base, a bearing assembly, a machining assembly, a control assembly and a liquid immersion assembly, the liquid immersion assembly comprises a liquid immersion base arranged on the machine base in a liftable mode and a first driving module used for driving the liquid immersion base to ascend and descend, and a liquid groove used for containing working liquid is formed in the liquid immersion base; the bearing assembly is located above the liquid tank, and the projection of the bearing assembly on the liquid immersion base is located in the liquid tank. According to the immersion type electric spark perforating device, the bearing assembly and the workpiece on the immersion type electric spark perforating device can be completely immersed in the working liquid in the liquid tank, and the working liquid can be completely filled into the inner cavity of the workpiece, so that the workpiece can completely cover the working liquid in the whole electric discharge machining process, and the machining quality and the machining efficiency of the workpiece are effectively improved; meanwhile, the working fluid and metal impurities cannot scatter and splash, and pollution to a machine tool and the working environment is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of perforation processing, and in particular to an immersion type electric spark perforation device and a method of using the same. Background Art

[0002] With the development of manufacturing industry, the demand for high-precision and high-efficiency processing technology is increasing. Due to its advantages of high precision, high efficiency and low cost, EDM forming processing is widely used in aviation, automobile, mold and other fields.

[0003] In the prior art, an electrospark punching machine is usually used to achieve electrospark punching forming processing. The working principle of the electrospark punching machine is: the workpiece is placed on the workbench, and then the electrode discharges to form a high-temperature electric spark and partially melt the metal material, and finally the working fluid is sprayed onto the electrode and the workpiece to cool the electrode and remove metal impurities.

[0004] However, the above scheme has the following defects: First, the increase in the base temperature of the workpiece will cause a remelting layer, a heat-affected zone and microcracks on its surface, and the spraying of the working fluid cannot effectively solve these problems; Second, due to the structural obstruction of the workpiece itself, the sprayed working fluid cannot completely cover the holes to be processed, resulting in uneven coverage of the working fluid, and the processed products have defects such as burrs, flanging, burns, and poor product quality; Third, when the workpiece is punched, the working fluid cannot be sprayed to the outlet of the hole, resulting in poor discharge conditions at the outlet of the hole and poor chip removal, causing carbon deposits to short-circuit and back off, affecting the punching efficiency; Fourth, when the sprayed working fluid acts on the surface of the workpiece, the liquid and metal impurities will spread and splash, causing great pollution to the machine tool components and the working environment. Summary of the invention

[0005] An object of the present application is to provide an immersion type electrospark perforating device capable of immersing a workpiece in a working fluid.

[0006] The present application provides an immersion type electric spark perforating device adopts the following technical solution: An immersion type electrospark perforating device comprises a machine base, on which a bearing assembly, a processing assembly and a control assembly are provided. The immersion type electrospark perforating device also comprises an immersion assembly, which comprises an immersion seat which can be raised and lowered and is provided on the machine base, and a first driving module for driving the immersion seat to rise and fall. A liquid tank for accommodating a working fluid is provided on the immersion seat, and the bearing assembly is located above the liquid tank and its projection on the immersion seat is located in the liquid tank.

[0007] By adopting the above technical solution, the bearing assembly and the workpiece can be completely immersed in the working fluid in the liquid tank, and the working fluid can be completely filled into the inner cavity of the workpiece, so that the workpiece can be completely covered with the working fluid during the entire discharge machining process, thereby effectively improving the machining quality and efficiency of the workpiece; at the same time, the working fluid and metal impurities will not splash around, preventing pollution to the machine tool and the working environment.

[0008] Preferably, the liquid tank has two oppositely arranged tank walls, and racks are respectively arranged on the two tank walls, and the racks extend along the vertical direction. The first driving module includes two gears respectively meshing with the two racks, and a driving member for driving the two gears to rotate synchronously.

[0009] By adopting the above technical solution, the two side walls of the liquid tank can be raised and lowered synchronously with the cooperation of two sets of gear racks, so that the workpiece can be completely immersed in the working liquid, effectively improving the uniformity of the working liquid coverage.

[0010] Preferably, two limit seats are also provided on the machine base, and the two limit seats are respectively located above the two groove walls. A limit slot is respectively opened on each of the limit seats, and the slot opening of the limit slot is arranged toward the groove wall. The two groove walls can be slidably inserted in the two limit slots respectively.

[0011] By adopting the above technical solution, the two limit seats can limit and guide the liquid tank, which can not only prevent the liquid tank from shifting when rising and affecting the immersion effect of the working fluid on the workpiece, but also prevent the liquid tank from rising excessively and causing the processing components to be immersed in the working fluid.

[0012] Preferably, the supporting assembly includes a supporting platform that can rotate on two axes, and the processing assembly includes a processing seat that can move on three axes, a second driving module for driving the processing seat to move, and an electrode arranged on the processing seat, and the electrode is arranged toward the supporting platform.

[0013] By adopting the above technical solution, the two-axis rotatable support platform and the three-axis movable processing seat can cooperate with each other and process the workpiece without dead angles, greatly improving the processing quality of the workpiece.

[0014] Preferably, the processing assembly also includes a turntable rotatable around its own axial direction, and a plurality of electricity collecting modules spaced apart at the circumferential side of the turntable, wherein the plurality of electricity collecting modules can pass directly under the electrode in sequence during the rotation of the turntable.

[0015] By adopting the above technical scheme, multiple electricity gathering modules can be used to gather and guide the sparks of electrodes of various specifications. When facing electrodes of different specifications, multiple electricity gathering modules can be quickly switched during the rotation of the turntable without manual intervention, and the degree of automation is high. At the same time, the multiple electricity gathering modules arranged on the turntable can move along a predetermined trajectory, and no precision adjustment is required after switching, which greatly improves work efficiency.

[0016] Preferably, the electricity collecting module includes a electricity collecting seat, an electricity collecting port opened on the electricity collecting seat, and an electricity collecting tube arranged on the electricity collecting seat, the electrode is arranged toward the electricity collecting port, the electricity collecting tube is connected with the electricity collecting port, the electricity collecting tube is arranged toward the supporting platform and its diameter gradually decreases along the direction approaching the supporting platform.

[0017] By adopting the above technical solution, the electric sparks emitted by the electrode can be gathered by the focusing tube and guided to the workpiece, which can not only improve the punching accuracy and punching efficiency of the workpiece, but also avoid the electric sparks from affecting other parts of the workpiece.

[0018] Preferably, the processing assembly further comprises a detection module disposed on the turntable, and the plurality of electricity gathering modules and the detection module are arranged at intervals around the circumference of the turntable.

[0019] By adopting the above technical solution, before processing the workpiece, the position of the workpiece can be calibrated and detected by the detection module, and the control component can compensate for the moving stroke of the processing seat according to the detection result, thereby effectively improving the punching accuracy; at the same time, the detection module is set on the turntable, so that the detection module and the power collection module can be quickly switched during the rotation of the turntable, thereby realizing seamless connection between the detection process and the punching process, without the need for human intervention, and with a high degree of automation.

[0020] Preferably, the machining component also includes a tool storage module arranged on the side of the machining seat and a tool changing module for replacing the electrode, the tool storage module includes a tool storage disk rotatable around its own axial direction, and tool storage grooves spaced apart on the circumferential side of the tool storage disk, and the tool storage grooves match the outer contour of the electrode.

[0021] By adopting the above technical solution, when the electrode on the processing seat cannot continue to perform drilling work due to excessive consumption, or the drilling size of the workpiece to be processed changes, the tool changing module can cooperate with the tool storage module to automatically replace the electrode on the processing seat, eliminating the need for manual disassembly and replacement of the electrode, thereby greatly improving work efficiency.

[0022] Preferably, the knife storage disk is provided with a plurality of knife storage areas spaced apart around its own circumference, the plurality of knife storage areas are respectively provided with numbers, and each of the knife storage areas is respectively provided with at least one knife storage groove.

[0023] By adopting the above technical solution, electrodes of various different specifications can be placed in different tool storage areas respectively. When replacing electrodes, the control component can locate the tool storage area according to the specifications of the electrode to be replaced, so that the tool changing module can be directly moved to the corresponding tool storage area to grab the electrode, which effectively improves the tool changing efficiency.

[0024] Preferably, the tool changing module comprises a tool changing seat and a tool changing groove formed on the tool changing seat, the tool changing seat can be raised and lowered and can translate in a direction approaching or moving away from the processing seat, and the tool changing groove matches the outer contour of the electrode.

[0025] By adopting the above technical solution, the electrode on the processing seat can be quickly replaced during the movement of the tool changing seat, which effectively improves the tool changing efficiency.

[0026] Preferably, the immersion electrospark perforating device also includes a circulation component arranged on the machine base, and the circulation component includes a circulating water tank, a circulating pump connected to the circulating water tank, a circulating pipe with one end connected to the circulating pump, and the other end of the circulating pipe is connected to the liquid tank.

[0027] By adopting the above technical solution, the working fluid in the liquid tank can circulate under the action of the circulation component and take away the impurity metal, effectively avoiding the impurity metal from being deposited in the liquid tank and affecting the subsequent workpiece processing.

[0028] Preferably, a sewage chamber and a clean water chamber are arranged in the circulating water tank, the circulating component also includes a filter, the circulating pump includes a first pump body and a second pump body, the first pump body is connected to the sewage chamber, the second pump body is connected to the clean water chamber, and the circulating pipe includes a first tube body connected between the first pump body and the filter, a second tube body connected between the filter and the clean water chamber, and a third tube body connected between the clean water chamber and the liquid tank.

[0029] By adopting the above technical solution, the working fluid in the liquid tank can achieve rapid and thorough circulation with the cooperation of the sewage chamber, the clean water chamber, the filter and the circulating pump, thereby improving the cleanliness of the working fluid and effectively avoiding the deposition of impurity metals in the liquid tank and affecting subsequent workpiece processing.

[0030] Preferably, a first interlayer is provided on the outer peripheral portion of the liquid tank, an overflow port connected to the first interlayer is opened on the tank wall of the liquid tank, a second interlayer is further provided in the machine base, the second interlayer is connected to the sewage chamber, an overflow groove is opened on the second interlayer, and the overflow groove is connected to the first interlayer.

[0031] By adopting the above technical solution, the working liquid in the liquid tank can be directly transferred to the sewage chamber through the cooperation of the first interlayer and the second interlayer, which effectively avoids sewage residue and improves sewage discharge efficiency; and there is no need to set up a sewage pipe, which effectively saves costs.

[0032] Another object of the present application is to provide a method for using an immersion electrospark perforating device.

[0033] The present application provides a method for using an immersion type electric spark perforating device using the following technical solution: A method for using an immersion-type electrospark perforating device, the method comprising a perforating method and a tool changing method, both of which are based on the electrospark perforating device described above; The perforation method comprises the following steps: Step 1, placing the workpiece on the carrying assembly, and then the first driving module drives the immersion seat to rise, and the immersion seat stops rising after the working liquid in the liquid tank immerses the workpiece; Step 2, the processing component performs perforation processing on the workpiece, and the control component continuously adjusts the positions of the processing component and the immersion seat during the processing process, so that the processing position of the workpiece is always located below the liquid level of the working fluid; Step 3: After the perforation process is completed, the first driving module drives the immersion seat to descend, and then takes out the processed workpiece; The tool changing method comprises the following steps: Step 1, move the processing seat to the side of the tool storage disc; Step 2: The control component controls the tool storage disc to rotate, and rotates the empty tool storage slot to between the tool changing module and the processing seat, and then the tool changing module moves the electrode on the processing seat to the empty tool storage slot; Step 3, the control component controls the tool storage disc to rotate again according to the specifications of the electrode to be replaced, so that the tool storage slot containing the electrode of corresponding specifications rotates to between the tool changing module and the processing seat, and then the tool changing module installs the electrode in the tool storage slot onto the processing seat.

[0034] By adopting the above technical solution, the bearing assembly and the workpiece can be completely immersed in the working fluid in the liquid tank, and the working fluid can be completely filled into the inner cavity of the workpiece, so that the workpiece can be completely covered with the working fluid during the entire discharge machining process, effectively improving the machining quality and machining efficiency of the workpiece; at the same time, the working fluid and metal impurities will not scatter and splash, preventing pollution to the machine tool and the working environment; At the same time, excessively worn electrodes can be replaced in time, effectively improving the drilling accuracy. The entire tool changing process does not require manual intervention, and the tool changing efficiency is high. Moreover, through the setting of the tool storage tray, it can pre-configure electrodes of various specifications. When facing different processing size requirements of the workpiece, the electrode can be quickly replaced through the cooperation of the tool storage module and the tool changing module without stopping the machine, ensuring the flow of the processing process and improving the processing efficiency.

[0035] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The bearing components and workpiece can be completely immersed in the working fluid in the tank, and the working fluid can be completely filled into the inner cavity of the workpiece, so that the workpiece can be completely covered with the working fluid during the entire EDM process, effectively improving the processing quality and efficiency of the workpiece; 2. The working fluid and metal impurities will not splash around, preventing pollution to the machine tool and working environment; 3. Excessively worn electrodes can be replaced in time, which effectively improves the drilling accuracy. The entire tool changing process does not require manual intervention, and the tool changing efficiency is high. In addition, through the setting of the tool storage tray, it can pre-configure electrodes of various specifications. When facing different processing size requirements of the workpiece, the tool storage module and the tool changing module can be used to achieve rapid replacement of electrodes without stopping the machine, ensuring the smoothness of the processing process and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the immersion type electrospark perforating device in Example 1 of the present application; Figure 2 yes Figure 1 Schematic diagram of longitudinal section; Figure 3 is a schematic structural diagram of the immersion assembly in Example 1 of the present application; Figure 4 It is a schematic diagram of the overall structure of the processing assembly and the bearing assembly in Example 1 of the present application; Figure 5 yes Figure 3 A is an enlarged schematic diagram; Figure 6 It is a schematic diagram of the structure of the tool storage module and the tool changing module in Example 1 of the present application; Figure 7It is a structural schematic diagram of the circulation component in Example 1 of the present application.

[0037] Markings in the accompanying drawings: 1. Machine base; 11. Workbench; 12. Mounting base; 2. Carrying assembly; 21. Carrying platform; 3. Processing assembly; 31. Processing seat; 32. Second driving module; 321. First linear motor; 322. Second linear motor; 323. Third linear motor; 33. Electrode; 331. Tool handle; 332. Electrode body; 34. Electricity collecting module; 341. Electricity collecting seat; 3411. Fixed part; 3412. Movable part; 3413. First bolt hole; 3414. Second bolt hole; 342. Electricity collecting port; 343. Electricity collecting tube; 35. Turntable; 36. Detection module; 37. Tool storage module; 371. Tool storage plate; 372. Tool storage slot; 373. Tool storage holder; 374. Tool storage plate; 38. Tool changing module; 381. Tool changing seat; 382. Tool changing slot; 383. Mounting plate; 384. Lifting cylinder; 385. Translation cylinder; 4. Control components; 5. Immersion assembly; 51. Immersion seat; 52. First drive module; 521. Gear; 522. Drive member; 53. Liquid tank; 54. Rack; 55. First interlayer; 56. Overflow port; 57. Water outlet tank; 6. Limit seat; 61. Limit slot; 7. Circulation assembly; 71. Circulation water tank; 711. Sewage chamber; 712. Clean water chamber; 713. Second interlayer; 714. Overflow tank; 72. Circulation pump; 721. First pump body; 722. Second pump body; 73. Circulation pipe; 74. Filter; 741. Clean water filter element; 742. Sewage filter element. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 The present invention is described in further detail.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] Example 1: See Figure 1-7As shown, an immersion type electrospark perforating device is shown, including a machine base 1, on which a bearing assembly 2, a processing assembly 3, an immersion assembly 5, a circulation assembly 7 and a control assembly 4 are arranged. Among them, the bearing assembly 2 is arranged in the middle of the machine base 1, which is used to bear the workpiece; the processing assembly 3 is located at the upper part of the machine base 1, which is used to perform perforation processing on the workpiece on the bearing assembly 2; the immersion assembly 5 is located at the lower part of the machine base 1, which is used to immerse the bearing assembly 2 and the workpiece in the working fluid; the circulation assembly 7 is located at the bottom of the machine base 1, which is used to realize the circulation flow of the working fluid in the immersion assembly 5; the control assembly 4 is a numerical control system, which is used to perform overall program control on the bearing assembly 2, the processing assembly 3, the immersion assembly 5 and the circulation assembly 7. The above-mentioned bearing assembly 2, the processing assembly 3, the immersion assembly 5, the circulation assembly 7 and the control assembly 4 are all arranged on the machine base 1, with a scientific and reasonable layout and high space utilization.

[0041] In this embodiment, if Figure 1-3 As shown, the immersion component 5 includes an immersion seat 51 which can be raised and lowered and is arranged on the machine base 1, and a first driving module 52 for driving the immersion seat 51 to be raised and lowered. The immersion seat 51 is provided with a liquid tank 53 for accommodating the working liquid. The supporting component 2 is located above the liquid tank 53 and its projection on the immersion seat 51 is located in the liquid tank 53.

[0042] When the workpiece is subjected to perforation processing, the first driving module 52 can drive the immersion seat 51 to rise and make the liquid tank 53 cover the supporting component 2, so that the workpiece can be completely immersed in the working fluid in the liquid tank 53, and the working fluid can be completely filled into the inner cavity of the workpiece. The workpiece can be completely covered with the working fluid during the entire discharge machining process, thereby effectively improving the machining quality and machining efficiency of the workpiece; at the same time, the working fluid and metal impurities will not splash around, thereby preventing pollution to the machine tool and the working environment.

[0043] Specific, combined Figure 2 As shown, a workbench 11 is arranged on the machine base 1. The workbench 11 is hollow and a machine tool casting is installed therein. An immersion seat 51 is arranged around the workbench 11 and can be raised and lowered relative to the workbench 11. A liquid tank 53 is formed between the workbench 11 and the immersion seat 51.

[0044] In this embodiment, combined with Figure 3As shown, the liquid tank 53 has two groove walls arranged opposite to each other, and racks 54 are respectively arranged on the two groove walls, and the racks 54 extend along the vertical direction. The first driving module 52 includes two gears 521 respectively meshed with the two racks 54, and a driving member 522 for driving the two gears 521 to rotate synchronously. The two gears 521 are connected to the two ends of the same rotating shaft, and the driving member 522 is a servo motor for driving the rotating shaft to rotate. The groove walls on both sides of the liquid tank 53 can be synchronously lifted and lowered under the cooperation of the two sets of gears 521 and the racks 54, so that the workpiece can be completely immersed in the working liquid, which effectively improves the uniformity of the working liquid coverage.

[0045] Two limit seats 6 are also arranged on the machine base 1. The two limit seats 6 are respectively located above the two oppositely arranged groove walls of the liquid tank 53. Each limit seat 6 is provided with a limit groove 61. The groove opening of the limit groove 61 faces downward. The two oppositely arranged groove walls of the liquid tank 53 can be slidably inserted into the two limit grooves 61. The two oppositely arranged groove walls of the liquid tank 53 can be respectively accommodated in the two limit seats 6 during their sliding stroke. The two limit seats 6 can limit and guide the liquid tank 53. When the two groove walls reach the end of the stroke, the two limit seats 6 can resist the two groove walls, thereby achieving the guidance and limitation of the two groove walls. In this way, not only can the liquid tank 53 be prevented from being offset when rising and affecting the immersion effect of the working fluid on the workpiece, but also the liquid tank 53 can be prevented from rising excessively and causing the processing component 3 to be immersed in the working fluid, thereby preventing the processing component 3 from being damaged.

[0046] In this embodiment, if Figure 2-3 As shown, a mounting seat 12 is provided on one side of the workbench 11, the immersion seat 51 is door-shaped and surrounds the other three sides of the workbench 11, the supporting component 2 is provided on the side of the mounting seat 12 facing the immersion seat 53, two limit seats 6 are provided on the mounting seat 12 and are respectively located on both sides of the supporting component 2, the processing component 3 is provided on the top of the mounting seat 12, and the liquid tank 53 is formed between the mounting seat 12, the immersion seat 51 and the workbench 11.

[0047] Combination Figure 4 As shown, the bearing assembly 2 includes a bearing platform 21 which can rotate around the B-axis and the C-axis, wherein the bearing platform 21 is an electric turntable, and the exterior of the electric turntable is a sealing structure. The electric turntable with the sealing structure can prevent the working fluid from penetrating into the interior when immersed in the working fluid, thereby avoiding affecting the punching process due to damage to the electric turntable; and the B-axis direction and the C-axis direction are the horizontal direction and the vertical direction respectively.

[0048] The processing assembly 3 includes a processing seat 31 that can move along the X-axis, Y-axis and Z-axis, a second driving module 32 for driving the processing seat 31 to move, and an electrode 33 arranged on the processing seat 31. The processing seat 31 is located above the carrier 21. The electrode 33 includes a tool handle 331 and an electrode body 332. The tool handle 331 is installed at the bottom of the processing seat 31, and the electrode body 332 is arranged toward the carrier 21. Among them, the X-axis direction and the Y-axis direction are two directions perpendicular to each other on the horizontal plane, and the Z-axis direction is the vertical direction. The second driving module 32 includes a first linear motor 321 with a driving direction in the X-axis direction, a second linear motor 322 with a driving direction in the Y-axis direction, and a third linear motor 323 with a driving direction in the Z-axis direction. The first linear motor 321 is installed on the machine base 1, the second linear motor 322 is installed on the slider of the first linear motor 321, the third linear motor 323 is installed on the slider of the second linear motor 322, and the processing seat 31 is installed on the slider of the third linear motor 323. The two-axis rotatable support platform 21 and the three-axis movable processing seat 31 can cooperate with each other and process the workpiece without dead angles, which greatly improves the processing quality of the workpiece.

[0049] Combination Figure 5 As shown, the processing component 3 also includes a turntable 35 rotatable around its own axial centerline direction, and three power-gathering modules 34 spaced apart on the circumferential side of the turntable 35. The turntable 35 is tilted at the lower end of the third linear motor 323, which is driven by a servo motor and has a rotation axis perpendicular to the X-axis direction. The three power-gathering modules 34 can pass directly under the electrode 33 in sequence during the rotation of the turntable 35.

[0050] The three focusing modules 34 can respectively realize the gathering and guiding of the electric sparks of various electrodes 33. When facing electrodes 33 of different specifications, the three focusing modules 34 can realize flexible switching during the rotation of the turntable 35 without manual intervention, and the degree of automation is high. At the same time, the three focusing modules 34 arranged on the turntable 35 can move along a predetermined trajectory, and no precision adjustment is required after switching, which greatly improves work efficiency.

[0051] Furthermore, the electricity focusing module 34 includes an electricity focusing seat 341 disposed on the rotating disk 35, an electricity focusing port 342 opened at the upper end of the electricity focusing seat 341, and an electricity focusing tube 343 connected to the bottom of the electricity focusing seat 341. The electrode 33 is disposed toward the electricity focusing port 342, and the electricity focusing tube 343 is connected to the electricity focusing port 342. The electricity focusing tube 343 is disposed toward the support platform 21, and its diameter gradually decreases along the direction approaching the support platform 21. The electric sparks emitted by the electrode 33 can be gathered and guided to the workpiece through the electricity focusing tube 343, which can not only improve the punching accuracy and punching efficiency of the workpiece, but also prevent the electric sparks from affecting other parts of the workpiece; at the same time, the rotating disk 35 is tilted to form an obtuse angle structure between the rotating disk 35 and the electricity focusing seat 341, which can prevent the rotating disk 35 from interfering with the electrode, so that the electrode 33 can be more accurately docked with the electricity focusing port 342.

[0052] The electric collector seat 341 includes a fixed portion 3411 and a movable portion 3412. The fixed portion 3411 is mounted on the turntable 35. The movable portion 3412 is movably connected to the fixed portion 3411. The electric collector port 342 is provided on the movable portion 3412. Two first bolt holes 3413 are provided on the fixed portion 3411. Two second bolt holes 3414 are provided on one end of the movable portion 3412 away from the electric collector port 342. An adjustment bolt is provided between the first bolt hole 3413 and the second bolt hole 3414. By loosening and tightening the adjustment bolt, the distance between the end of the movable portion 3412 away from the electric collector port 342 and the fixed portion 3411 can be adjusted, thereby adjusting the posture of the entire movable portion 3412, changing the angle between the movable portion 3412 and the turntable 35, thereby adjusting the verticality of the electric collector seat 341, which can effectively improve the electric collector effect of the electric collector seat 341.

[0053] In this embodiment, combined again Figure 5 As shown, the processing assembly 3 also includes a detection module 36 disposed on the turntable 35. The three power-gathering modules 34 and the detection module 36 are arranged at intervals around the circumference of the turntable 35, and the detection module 36 is located in the arrangement direction of the three power-gathering modules 34. Before processing the workpiece, the position of the workpiece can be calibrated and detected by the detection module 36. The control assembly 4 can compensate for the moving stroke of the processing seat 31 according to the detection result, which effectively improves the drilling accuracy; at the same time, the detection module 36 is arranged on the turntable 35, so that the detection module 36 and the power-gathering module 34 can be quickly switched during the rotation of the turntable 35, so as to realize the seamless connection between the detection process and the drilling process, without manual intervention, and with a high degree of automation.

[0054] Specifically, since manufacturing errors, surface errors and installation errors will accumulate during part casting, part production and part installation, there will be deviations in space and position when drilling according to the theoretical model. Therefore, when the processing accuracy requirements are very high, it is necessary to further determine the spatial position of the parts. In this embodiment, the detection module 36 is a wireless detection head. During detection, the turntable 35 rotates and rotates the detection module 36 to just below the electrode 33. Then the processing seat 31 moves and drives the detection module 36 to perform six-point calibration on the workpiece to determine the deviation between the actual position and the theoretical position of the workpiece. The control component 4 can modify the processing program according to the detected deviation and compensate for the moving stroke of the processing seat 31 to make the drilling position more accurate. In addition, after the detection is completed, the turntable 35 can be directly rotated to achieve the switching of the power collection module 34 and the detection module 36, and the work efficiency is high.

[0055] In this embodiment, combined with Figure 6 As shown, the processing assembly 3 also includes a tool storage module 37 disposed on the side of the processing seat 31, and a tool changing module 38 for replacing the electrode 33. The tool storage module 37 includes a tool storage frame 373, a tool storage disc 371 rotatable around its own axis and disposed on the upper end of the tool storage frame 373, a servo motor for driving the tool storage disc 371 to rotate, a tool storage plate 374 disposed at intervals on the circumferential side of the tool storage disc 371, and a tool storage groove 372 provided on the tool storage plate 374. The tool storage disc 371 is disposed horizontally, and the tool storage groove 372 matches the outer contour of the electrode 33. Before starting the drilling work, multiple electrodes 33 can be pre-installed in the tool storage groove 372 for standby use, the tool handle 331 is embedded in the tool storage groove 372, and the electrode body 332 extends downward.

[0056] When the electrode 33 on the processing seat 31 cannot continue to perform the drilling work due to excessive consumption, or the drilling size of the workpiece changes, the tool changing module 38 can cooperate with the tool storage module 37 to replace the electrode 33 on the processing seat 31. There is no need to manually disassemble and replace the electrode 33, which greatly improves work efficiency.

[0057] There are four knife storage areas arranged around the knife storage disk 371 at intervals in the circumferential direction. The four knife storage areas are numbered in the order of 1-4. Four knife storage slots 372 are respectively arranged in each knife storage area. That is to say, there are a total of sixteen knife storage slots 372, and the sixteen knife storage slots 372 are numbered in the order of 1-16. In this way, four different specifications of electrodes 33 can be placed in the four knife storage areas respectively. When replacing the electrode 33, the control component 4 can locate the knife storage area number according to the specification of the electrode 33 to be replaced, so that the tool changing module 38 can move directly to the corresponding knife storage area to grab the electrode 33, which effectively improves the tool changing efficiency; at the same time, the sixteen knife storage slots 372 are numbered in sequence, so that the tool changing module 38 can be directly located to the corresponding knife storage slot 372, and the tool changing efficiency is higher.

[0058] In this embodiment, combined again Figure 6 As shown, the tool changing module 38 includes a mounting plate 383 arranged at the bottom center of the tool storage plate 371, a lifting cylinder 384 arranged on the mounting plate 383, a translation cylinder 385 arranged at the end of the piston rod of the lifting cylinder 384, a tool changing seat 381 arranged at the end of the piston rod of the translation cylinder 385, and a tool changing slot 382 opened on the tool changing seat 381. Sixteen tool storage slots 372 surround the peripheral side of the mounting plate 383, and the piston rod of the translation cylinder 385 can be extended and retracted in the direction close to or away from the processing seat 31. The tool changing seat 381 can be lifted and lowered and can be translated in the direction close to or away from the processing seat 31 under the action of the lifting cylinder 384 and the translation cylinder 385, and the tool changing slot 382 matches the outer contour of the tool handle 331. In this way, the electrode 33 on the processing seat 31 can be quickly replaced during the movement of the tool changing seat 381, which effectively improves the tool changing efficiency.

[0059] Specifically, when unloading the tool, the tool changer 381 moves to the bottom of the processing seat 31 after the lifting stroke and the translation stroke, and then the tool changer groove 382 clamps the electrode 33 and pulls out the electrode 33, and then the tool storage disc 371 rotates and rotates the empty tool storage groove 372 to the translation path of the tool changer 381, and the tool changer 381 moves to the side of the tool storage disc 371 and places the electrode 33 in the empty tool storage groove 372; When changing the tool, the control component 4 directly locates the corresponding tool storage area and tool storage slot 372 according to the specifications of the electrode to be replaced, and then the turntable 35 rotates and rotates the corresponding tool storage slot 372 to the translation path on the side of the tool changing seat 381, and the tool changing seat 38 translates and brings out the electrode, and then after the translation stroke and the lifting stroke, the electrode 33 in the tool storage slot 372 is moved to the bottom of the processing seat 31, and then the tool handle 331 is inserted into the processing seat 31.

[0060] In this embodiment, if Figure 2 and Figure 7As shown, the circulation assembly 7 includes a circulation water tank 71, a circulation pump 72 connected to the circulation water tank 71, a circulation pipe 73 connected to the circulation pump 72 at one end, and the other end of the circulation pipe 73 is connected to the liquid tank 53. The working fluid in the liquid tank 53 can circulate and take away the impurity metal under the action of the circulation assembly 7, effectively avoiding the impurity metal from being deposited in the liquid tank 53 and affecting the subsequent workpiece processing.

[0061] A sewage chamber 711 and a clean water chamber 712 are arranged in the circulating water tank 71. The circulating component 7 also includes a filter 74. The filter 74 includes a clean water filter element 741 and a sewage filter element 742. The circulating pump 72 includes a first pump body 721 and a second pump body 722. The first pump body 721 is connected to the sewage chamber 711, and the second pump body 722 is connected to the clean water chamber 712. The circulating pipe 73 includes a first pipe body connected between the first pump body 721 and the filter 74, a second pipe body connected between the filter 74 and the clean water chamber 712, and a third pipe body connected between the clean water chamber 712 and the liquid tank 53.

[0062] Specifically, the first pump body 721 is responsible for pumping the sewage in the sewage chamber 711 to the sewage filter element 742 for filtration, and then sending it to the clean water chamber 712; at the same time, the first pump body 721 is also responsible for cleaning the pipeline of the sewage chamber 711 and pumping out the sewage in the sewage chamber 711; The second pump body 722 is responsible for pumping the water in the clean water chamber 712 into the liquid tank 53; and, the second pump body 722 is also responsible for pumping the sewage in the clean water chamber 712 into the clean water filter element 741 for filtration, and then sending it to the inner cavity of the electrode 33 to form a high-pressure internal flushing liquid and spraying it toward the workpiece when the workpiece is pierced; at the same time, the second pump body 722 is also responsible for the clean water pumping and drainage of the clean water chamber 712, as well as the pressure relief of the clean water chamber 712.

[0063] Among them, a first interlayer 55 is arranged on the outer side of the liquid tank 53, a plurality of overflow ports 56 connected to the first interlayer 55 are provided on the upper side of the tank wall of the liquid tank 53, a water outlet 57 is provided below the first interlayer 55, a second interlayer 713 is arranged on the outer side of the workbench 11, the second interlayer 713 is connected to the sewage chamber 711, an overflow groove 714 is provided on the second interlayer 713, and the first interlayer 55 is inserted into the second interlayer 713 from the overflow groove 714. The working liquid in the liquid tank 53 can be directly transferred to the sewage chamber 711 through the cooperation of the first interlayer 55 and the second interlayer 713, which effectively avoids sewage residue and improves sewage discharge efficiency; and there is no need to set up a sewage pipe, which effectively saves costs.

[0064] The immersion type electric spark perforating device of this embodiment has the following advantages compared with the existing electric spark perforating machine: 1. The innovative integrated bed structure combines the machine base 1 with the bearing component 2, the processing component 3, the immersion component 5, the circulation component 7, and the control component 4 into an integral structure, which simplifies the equipment and improves the space utilization.

[0065] 2. The two-axis rotatable support platform 21 and the liftable liquid tank 53 can realize precise control of the liquid level of the working fluid, so that the processing position of the workpiece is always located below the liquid level of the working fluid, effectively improving the processing quality and processing efficiency.

[0066] 3. The liftable liquid tank 53 can keep the workpiece immersed in the working liquid during the entire processing process. The workpiece after processing will not have defects such as burrs, flanging, burning and blackening. The quality and metallographic structure of the hole and hole wall of the thick workpiece are better than those processed by the prior art.

[0067] 4. The circulation component 7 can realize the circulation of the working fluid in the liquid tank 53 and remove the metal impurities on the workpiece, so as to prevent the impurity metal from being deposited in the liquid tank 53 and affecting the subsequent workpiece processing.

[0068] 5. Excessively worn electrodes can be replaced in time, which effectively improves the drilling accuracy. The entire tool changing process does not require manual intervention, and the tool changing efficiency is high. In addition, through the setting of the tool storage tray, it can pre-configure electrodes of various specifications. When facing different processing size requirements of the workpiece, the tool storage module and the tool changing module can be used to achieve rapid replacement of electrodes without stopping the machine, ensuring the smoothness of the processing process and improving the processing efficiency.

[0069] Embodiment 2: This embodiment discloses a method for using an immersion electrospark perforating device, which includes a perforating method and a tool changing method.

[0070] The perforation method comprises the following steps: Step 1, place the workpiece on the supporting platform 21, the supporting platform 21 rotates on two axes and adjusts the processing position and processing angle of the tool; then the first driving module 52 drives the immersion seat 51 to rise, and the circulation component 7 continues to fill the working fluid into the liquid tank 53. After the working fluid in the liquid tank 53 immerses the workpiece, the immersion seat 51 stops rising.

[0071] The servo motor drives the two gears 521 to rotate synchronously, and the two gears 521 cooperate with the two racks 54 to drive the two side walls of the liquid tank 53 to rise and fall synchronously. During the lifting process of the two side walls, the volume of the liquid tank 53 formed between the two side walls and the workbench 11 can gradually increase, so that the liquid tank 53 can accommodate more working fluid. When the two side walls of the liquid tank 53 reach the end of the rising stroke, the two limit grooves 61 abut against the two side walls of the liquid tank 53.

[0072] Step 2, the processing seat 31 moves in three axes and drives the electrode 33 to approach the workpiece. The electrode 33 accurately processes the workpiece through the power focusing module 34. The control component 4 continuously adjusts the position of the processing component 3 and the immersion seat 51 during the processing, so that the processing position of the workpiece is always below the liquid level of the working fluid. The circulation component 7 drives the working fluid in the liquid tank 53 to circulate and take away metal impurities.

[0073] When facing electrodes 33 of different specifications, the turntable 35 rotates and drives different electricity collecting modules 34 to reach directly below the electrodes 33 to achieve the switching of the electricity collecting modules 34 .

[0074] Before drilling the workpiece, the turntable 35 rotates and rotates the detection module 36 to directly below the electrode 33. Then the processing seat 31 moves and drives the detection module 36 to perform six-point calibration on the workpiece to determine the deviation between the actual position and the theoretical position of the workpiece. The control component 4 modifies the processing program according to the detected deviation and compensates for the moving stroke of the processing seat 31.

[0075] Step 3, after the perforation process is completed, the first driving module 52 drives the immersion seat 51 to descend, and then the processed workpiece is removed from the supporting platform 21 and replaced with a new workpiece, and then the above steps are repeated.

[0076] After repeating the above-mentioned punching steps for many times, the electrode 33 on the processing seat 31 will be unable to continue the punching work due to excessive consumption, and the electrode 33 needs to be replaced; or, when the workpiece needs to open holes of different sizes, the original electrode is no longer applicable, and the electrode 33 also needs to be replaced.

[0077] The specific tool changing method includes the following steps: Step 1, the control component 4 controls the processing seat 31 to move in the horizontal direction and the vertical direction, so that the processing seat 31 moves to the side of the tool storage disk 371.

[0078] Among them, the control component 4 can calculate and judge the remaining length of the electrode 33 on the processing seat 31 in real time. When the height of the processing seat 31 + the drilling depth > the total lifting stroke of the processing seat 31, the control component 4 will trigger the judgment of replacing the electrode 33.

[0079] Step 2, the control component 4 controls the tool storage disc 371 to rotate, and rotates the empty tool storage slot 372 to between the tool changing module 38 and the processing seat 31. Then, the tool changing seat 381 reaches the side of the processing seat 31 after a translation stroke and a lifting stroke, and removes the electrode 33 on the processing seat 31. Then, the tool changing seat 381 is reset and the electrode 33 is embedded in the empty tool storage slot 372.

[0080] Step 3, the control component 4 controls the rotation of the tool storage disc 371 again according to the specifications of the electrode 33 to be replaced, so that the tool storage slot 372 containing the electrode 33 of the corresponding specification rotates to between the tool changing module 38 and the processing seat 31, and then the tool changing seat 381 grabs the electrode 33 in the corresponding tool storage slot 372 after a translation stroke and a lifting stroke, and then installs the electrode 33 on the processing seat 31 after another translation stroke and a lifting stroke.

[0081] The control component 4 locates the corresponding tool storage area according to the specifications of the electrode 33 to be replaced, analyzes whether there are any electrodes 33 remaining in the corresponding tool storage area, and finally controls the tool changer 381 to reach the corresponding tool storage slot 372 to grab the electrode 33.

[0082] During the processing, the specific moving paths of the processing seat 31, the supporting platform 21 and the tool changing seat 381 are flexibly determined by the control component 4 according to the specific processing conditions.

[0083] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An immersion type electrospark perforating device, comprising a machine base (1), wherein the machine base (1) is provided with a bearing assembly (2), a processing assembly (3) and a control assembly (4), characterized in that: The immersion type electrospark perforating device further comprises an immersion assembly (5), the immersion assembly (5) comprising an immersion seat (51) which is liftable and arranged on the machine base (1), and a first driving module (52) for driving the immersion seat (51) to lift and lower, the immersion seat (51) being provided with a liquid tank (53) for accommodating working liquid, the bearing assembly (2) being located above the liquid tank (53) and its projection on the immersion seat (51) being located in the liquid tank (53); The bearing assembly (2) comprises a bearing platform (21) that can rotate on two axes, and the processing assembly (3) comprises a processing seat (31) that can move on three axes, a second driving module (32) for driving the processing seat (31) to move, an electrode (33) arranged on the processing seat (31), a turntable (35) that can rotate around its own axis, a plurality of electricity collecting modules (34) that are arranged at intervals on the circumferential side of the turntable (35), a tool storage module (37) arranged on the side of the processing seat (31), and a tool changing module (38) for changing the electrode; The electrode (33) is arranged toward the supporting platform (21), and the plurality of electricity collecting modules (34) can sequentially pass directly below the electrode (33) during the rotation of the rotating disk (35); The knife storage module (37) comprises a knife storage disk (371) rotatably arranged around its own axial centerline direction, and knife storage grooves (372) spaced apart on the circumferential side of the knife storage disk (371), wherein the knife storage grooves (372) match the outer contour of the electrode (33), and the knife storage disk (371) is provided with a plurality of knife storage areas spaced apart around its own circumference, wherein the plurality of knife storage areas are respectively provided with numbers, and each of the knife storage areas is respectively provided with at least one knife storage groove (372).

2. The immersion electrospark perforating device according to claim 1, characterized in that: The liquid tank (53) has two groove walls arranged opposite to each other. The machine base (1) is also provided with two limit seats (6). The two limit seats (6) are respectively located above the two groove walls. A limit groove (61) is respectively provided on each of the limit seats (6). The groove opening of the limit groove (61) is arranged toward the groove wall. The two groove walls can be slidably inserted into the two limit grooves (61).

3. The immersion type electric spark perforating device according to claim 1, characterized in that: The processing assembly (3) further comprises a detection module (36) arranged on the turntable (35), and the plurality of power-gathering modules (34) and the detection module (36) are arranged at intervals in the circumferential direction of the turntable (35).

4. The immersion electrospark perforating device according to claim 1, characterized in that: The tool changing module (38) comprises a tool changing seat (381) and a tool changing groove (382) provided on the tool changing seat (381); the tool changing seat (381) can be raised and lowered and can be translated in a direction approaching or moving away from the processing seat (31); and the tool changing groove (382) matches the outer contour of the electrode (33).

5. The immersion type electric spark perforating device according to claim 1, characterized in that: The immersion type electrospark perforating device further comprises a circulation assembly (7) arranged on the machine base (1), the circulation assembly (7) comprising a circulation water tank (71), a circulation pump (72) connected to the circulation water tank (71), a circulation pipe (73) having one end connected to the circulation pump (72), the other end of the circulation pipe (73) being connected to the liquid tank (53), and a sewage chamber (711) and a clean water chamber (712) being arranged in the circulation water tank (71). A first interlayer (55) is provided on the outer peripheral portion of the liquid tank (53); an overflow port (56) communicating with the first interlayer (55) is provided on the tank wall of the liquid tank (53); a second interlayer (713) is further provided in the machine base (1); the second interlayer (713) is communicated with the sewage chamber (711); an overflow groove (714) is provided on the second interlayer (713); the overflow groove (714) is communicated with the first interlayer (55).

6. A method for using an immersion electrospark perforating device, characterized in that: The use method includes a perforation method and a tool changing method; The perforation method is based on the immersion electrospark perforation device according to any one of claims 1 to 5, and comprises the following steps: Step 1, placing the workpiece on the carrier assembly (2), then the first driving module (52) drives the immersion seat (51) to rise, and after the working liquid in the liquid tank (53) submerges the workpiece, the immersion seat (51) stops rising; Step 2, the processing component (3) performs perforation processing on the workpiece, and the control component (4) continuously adjusts the position of the processing component (3) and the immersion seat (51) during the processing process, so that the processing position of the workpiece is always located below the liquid level of the working fluid; Step 3, after the perforation process is completed, the first driving module (52) drives the immersion seat (51) to descend, and then takes out the processed workpiece; The tool changing method is based on the immersion electrospark perforating device according to claim 6, and comprises the following steps: Step 1, moving the processing seat (31) to the side of the tool storage disc (371); Step 2, the control component (4) controls the tool storage disc (371) to rotate, and rotates the vacant tool storage slot (372) to between the tool changing module (38) and the processing seat (31), and then the tool changing module (38) moves the electrode (33) on the processing seat (31) to the vacant tool storage slot (372); Step 3, the control component (4) controls the rotation of the tool storage disc (371) again according to the specifications of the electrode (33) to be replaced, so that the tool storage slot (372) containing the electrode (33) of the corresponding specifications rotates to between the tool changing module (38) and the processing seat (31), and then the tool changing module (38) installs the electrode (33) in the tool storage slot (372) onto the processing seat (31).

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