Slow wire cutting device

Abstract

The present application relates to wire cutting device technical field, especially provide a kind of slow wire cutting device.The slow wire cutting device includes cutting bed, three-axis workbench, silk transport assembly, cutting wire rack, upper wire tool assembly and lower wire tool assembly.The present application realizes the full synchronous position following adjustment of electrode wire upper end and lower end, ensures that electrode wire always maintains accurate perpendicularity or preset taper in the whole cutting stroke, and can give the lateral floating position adjustment of lower cutting frame, to prevent workpiece from appearing internal stress release when cutting, causing its deformation and clamping electrode wire, causing electrode wire fracture, in addition, the tension of electrode wire running can be adjusted in real time, ensure the stability in cutting operation process, at the same time, when electrode wire is suddenly tightened due to card silk or vibration, leave electrode wire floating interval, protect electrode wire and guide wire system from being damaged, and can carry out double hierarchical buffering, protect electrode wire, prolong the service life of equipment.

Description

Technical Field

[0001] This invention relates to the field of wire cutting equipment technology, and in particular to a slow wire cutting device. Background Technology

[0002] As a core processing technology in the field of precision manufacturing, slow wire EDM is widely used in key areas such as aerospace precision parts, high-end molds, and automotive electronics due to its high machining accuracy and high surface roughness.

[0003] However, existing wire EDM devices employ independent adjustment structures for the upper and lower wire guide systems. The upper wire guide head is driven by a servo motor, while the lower wire guide arm is mostly rigidly fixed or manually adjustable. This makes it impossible to achieve full-stroke synchronous following, leading to surface tilting and excessive taper errors when cutting thick workpieces. More importantly, the deformation caused by the release of internal stress during workpiece cutting directly compresses the electrode wire, and the rigid lower wire guide arm lacks floating and yielding capabilities, easily causing wire jamming and breakage. Furthermore, existing tension control relies on passive spring tensioning, which cannot compensate for the minute fluctuations caused by high-speed wire feeding and reversal in real time, resulting in stripe defects on the cut surface and making it difficult to further improve surface roughness. Summary of the Invention

[0004] Therefore, it is necessary to provide a slow wire cutting device to solve at least one of the technical problems in the background art.

[0005] A slow wire cutting device includes a cutting bed, a three-axis worktable, a wire feeding assembly, a cutting wire frame, an upper wire guide assembly, and a lower wire guide assembly. The bottom of the three-axis worktable is mounted on one end of the top surface of the cutting bed, and a lifting shell is provided on the other end of the top surface of the cutting bed. Movable slide rails protrude from both ends of the top of the lifting shell, and a moving drive motor is located in the middle of the top of the lifting shell. The wire feeding assembly includes a wire feeding moving seat, two wire feeding mounting boxes, a wire feeding rotation motor, wire feeding roller elements, and wire feeding adjustment elements. The bottom ends of the wire feeding moving seat are slidably mounted in the two movable slide rails, and the wire feeding moving seat is connected to the output shaft of the moving drive motor. The bottoms of the two wire feeding mounting boxes are respectively mounted on both sides of the top of the wire feeding moving seat, and each wire feeding mounting box has one... The middle of the side is recessed with a wire feeding mounting hole. The wire feeding motor is installed inside the wire feeding mounting box located inside the cutting bed. The wire feeding roller element is installed in two wire feeding mounting holes and is connected to the output shaft of the wire feeding motor. The wire feeding adjustment element is installed in the wire feeding roller element. The bottom of the cutting wire frame is installed inside the middle of the top surface of the cutting bed. The top of the cutting wire frame is recessed with a vertical adjustment groove. A vertical adjustment motor is installed on the top of the cutting wire frame. An adjustment screw is installed on the output shaft of the vertical adjustment motor. The middle of the outer side of the cutting wire frame is recessed with a lower mounting groove. The upper wire tool assembly is slidably installed in the vertical adjustment groove and is connected to the adjustment screw. The lower wire tool assembly is installed in the lower mounting groove.

[0006] As a further improvement of the present invention, the wire feeding roller element includes an inner mounting end cylinder, an outer mounting end cylinder, a wire feeding roller, a central slide column, four synchronous tensioning slide bars, and eight traction swing arms. The outer wall of the inner mounting end cylinder is mounted in the middle of a wire feeding mounting hole located inside the cutting bed. The outer wall of the outer mounting end cylinder is slidably mounted in the middle of another wire feeding mounting hole. An annular mounting groove is recessed on the outer side of the outer mounting end cylinder. A sliding cavity is recessed in the middle of the outer side of the wire feeding roller. The two sides of the outer wall of the wire feeding roller are rotatably mounted in two wire feeding mounting holes respectively. A connecting mounting shaft protrudes from the inner side of the wire feeding roller. The connecting mounting shaft passes through the inner cavity of the inner mounting end cylinder and connects with the wire feeding roller. The output shaft of the rotating motor is connected to the sliding cavity. Four radial grooves are recessed on both sides of the inner wall of the sliding cavity along the circumferential direction. The middle sliding column is slidably installed in the sliding cavity. A connecting ring is protruding on the outer side of the outer wall of the middle sliding column. The connecting ring is connected to the inner wall of the outer mounting end cylinder. Four adjusting grooves are recessed on the inner side and middle part of the outer wall of the middle sliding column along the circumferential direction. Four synchronous tensioning slides are slidably installed in the four radial grooves. Pre-set mounting slots are recessed on both sides of the inner wall of each synchronous tensioning slide. One end of each of the eight traction arms is rotatably installed in one of the eight pre-set mounting slots. The other end of each of the eight traction arms is rotatably installed in the middle of the eight adjusting slots.

[0007] As a further improvement of the present invention, the wire feeding adjustment element includes a wire feeding adjustment cylinder, a wire feeding return spring, a wire feeding pressing hook, and a pressing hook spring. The inner side of the outer wall of the wire feeding adjustment cylinder is installed on the outer side of the wire feeding mounting hole located on the outer side of the cutting bed, and the outer side of the outer wall of the middle sliding column is slidably installed on the inner wall of the wire feeding adjustment cylinder. One end of the wire feeding return spring is installed in the annular mounting groove, and the other end of the wire feeding return spring is installed on the inner side of the wire feeding adjustment cylinder. A radial pressing groove is recessed at the top of the outer wall of the wire feeding adjustment cylinder, and a spring sealing plate is provided on the inner side of the radial pressing groove. The middle part of the wire feeding pressing hook is rotatably installed in the middle part of the radial pressing groove, and the outer side of the bottom surface of the wire feeding pressing hook abuts against the outer wall of the middle sliding column. One end of the pressing hook spring is connected to the inner side of the wire feeding pressing hook, and the other end of the pressing hook spring is connected to the inner side of the spring sealing plate.

[0008] As a further improvement of the present invention, the upper wire tool assembly includes an upper wire tool intermediate shell, a wire guide frame, a wire guide element, and an upper wire tool adjustment element. The middle inner side of the upper wire tool intermediate shell is slidably installed in a vertical adjustment groove, and a threaded connecting block is protruding from the middle inner side of the upper wire tool intermediate shell. The adjusting screw is threadedly connected to the threaded connecting block. An upper wire passage groove is recessed in the middle of the top surface of the upper wire tool intermediate shell. Cutting wire guide wheels are rotatably installed at both ends of the upper wire passage groove. A wire mounting plate is protruding from the top of the inner end of the upper wire tool intermediate shell, and an upper wire tool longitudinal plate is protruding from the top of the outer end of the upper wire tool intermediate shell. The wire mounting plate is connected to the wire guide frame, the wire guide element is installed in the wire guide frame, and the upper wire tool adjustment element is slidably installed in the upper wire tool longitudinal plate.

[0009] As a further improvement of the present invention, a lead wire adjustment frame is provided at the inner end of the lead wire frame, a synchronous turntable is provided at the middle of the outer side of the lead wire frame, and lead wire rotating shafts are respectively provided at both ends of the bottom surface of the lead wire frame.

[0010] As a further improvement of the present invention, the lead element includes two lead arms, a lead drive cylinder, a synchronization buffer, a lead bottom shell, a lead wheel adjusting cylinder, and a lead wheel. The tops of the two lead arms are rotatably mounted on the outer sides of the two lead shafts, the top of the lead drive cylinder is rotatably mounted on the top of the lead adjusting frame, and the output shaft of the lead drive cylinder is rotatably connected to the middle of one of the lead arms. The top of the synchronization buffer is rotatably connected to the synchronization turntable, and the bottom of the synchronization buffer is rotatably connected to the middle of the other lead arm. The top two ends of the lead bottom shell are rotatably connected to the bottoms of the two lead arms, and the lead wheel adjusting cylinder is mounted on the inner side of the bottom of the lead bottom shell. The lead wheel is rotatably mounted on the output shaft of the lead wheel adjusting cylinder.

[0011] As a further improvement of the present invention, the upper wire adjustment element includes a horizontal adjustment mounting plate, a horizontal adjustment frame, an upper wire end frame, and an upper cutting wheel. The bottom of the horizontal adjustment mounting plate is slidably mounted on the top of the upper wire longitudinal plate via a vertical adjustment motor. The bottom of the horizontal adjustment frame is slidably mounted on the top of the horizontal adjustment mounting plate via a horizontal adjustment motor. The inner side of the upper wire end frame is connected to the horizontal adjustment frame. The top of the upper wire end frame is recessed with an adjustment cutting groove. A conductive guide wheel is rotatably mounted on the inner end of the adjustment cutting groove. A vertical through groove is recessed on the outer end of the top surface of the adjustment cutting groove. The upper cutting wheel is rotatably mounted in the vertical through groove.

[0012] As a further improvement of the present invention, the lower wire tool assembly includes a lower wire tool mounting platform, a synchronizing cylinder, a lower wire tool synchronizing element, and a lower wire tool element. The lower wire tool mounting platform is installed in the lower mounting groove, the synchronizing cylinder is rotatably installed at the outer end of the lower wire tool mounting platform, the lower wire tool synchronizing element is rotatably installed at the inner end of the lower wire tool mounting platform, and the lower wire tool element is installed on the outer side of the lower wire tool synchronizing element.

[0013] As a further improvement of the present invention, the lower wire guide synchronization element includes a lower inner rotating arm, a lower outer rotating arm, an inner telescopic device, and an outer telescopic buffer. The inner end of the lower inner rotating arm is rotatably connected to the inner end of the lower wire guide mounting platform. The output shaft of the synchronization cylinder is rotatably connected to the middle of the lower inner rotating arm. The inner telescopic device is rotatably mounted in the middle of the lower inner rotating arm, and a scissor-type rotating arm is provided at the outer end of the inner telescopic device. Limiting arc plates are provided on both sides of the outer end of the lower inner rotating arm. Each limiting arc plate is recessed with an arc-shaped sliding groove. The outer end of the lower outer rotating arm is rotatably connected to the outer end of the lower inner rotating arm, and the scissor-type rotating arm is rotatably connected to both the lower inner rotating arm and the lower inner rotating arm. Limiting sliding columns are provided on both sides of the outer end of the lower outer rotating arm. The two limiting sliding columns are slidably mounted in the two arc-shaped sliding grooves. The inner side of the outer telescopic buffer is rotatably connected to the inner end of the lower inner rotating arm, and the outer end of the outer telescopic buffer is rotatably connected to the inner end of the lower outer rotating arm.

[0014] As a further improvement of the present invention, the lower wire tool element includes a lower cutting frame and a lower cutting wheel. The inner side of the lower cutting frame is connected to the outer side of the lower outer rotating arm. A lower cutting groove is recessed on the outer side of the lower cutting frame. A lower cutting through groove is recessed on the bottom surface of the lower cutting frame. The lower cutting wheel is rotatably installed in the lower cutting through groove.

[0015] The beneficial effects of this invention are as follows: 1. This invention utilizes the upper and lower wire guide components to achieve fully synchronous position adjustment of the upper and lower ends of the electrode wire, ensuring that the electrode wire maintains precise verticality or a preset taper throughout the entire cutting stroke. Furthermore, the inner telescopic device and outer telescopic buffer within the lower wire guide synchronization element provide lateral floating position adjustment for the lower cutting frame, preventing the workpiece from deforming and clamping the electrode wire during cutting due to internal stress release, which could lead to wire breakage. In addition, the lead wire element is used to adjust the tension of the electrode wire in real time, ensuring stability during the cutting process.

[0016] 2. This design can create a floating range for the electrode wire by using the wire feeding roller element when wire jamming or vibration causes the electrode wire to tighten suddenly, thus protecting the electrode wire and the wire guiding system from damage. In addition, the synchronous tensioning slide bar retracts evenly inward during the process, with symmetrical force to prevent the electrode wire from running off the groove due to uneven load. At the same time, it can perform double-stage buffering to protect the electrode wire from breakage and extend the service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention.

[0018] Figure 2 This is a perspective view of another embodiment of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of a wire feeding assembly according to an embodiment of the present invention.

[0020] Figure 4 This is a three-dimensional schematic diagram of the wire feeding roller element and the wire feeding adjustment element in one embodiment of the present invention.

[0021] Figure 5 This is an internal schematic diagram of the wire feeding roller element and the wire feeding adjustment element in one embodiment of the present invention.

[0022] Figure 6 This is a perspective view of the wire cutting frame, the upper wire tool assembly, and the lower wire tool assembly in one embodiment of the present invention.

[0023] Figure 7 This is a three-dimensional schematic diagram of the upper wire assembly in one embodiment of the present invention.

[0024] Figure 8 This is a three-dimensional schematic diagram of a lead element in one embodiment of the present invention.

[0025] Figure 9 This is a three-dimensional schematic diagram of the lower wire assembly in one embodiment of the present invention.

[0026] Figure 10 This is a three-dimensional schematic diagram of a synchronization element on the lower line in one embodiment of the present invention.

[0027] In the picture: 10. Cutting bed; 11. Lifting shell; 12. Moving slide rail; 13. Moving drive motor; 20. Three-axis worktable; 30. Wire feeding assembly; 31. Wire feeding moving seat; 32. Wire feeding mounting box; 321. Wire feeding mounting hole; 33. Wire feeding rotating motor; 34. Wire feeding roller element; 341. Inner mounting end cylinder; 342. Wire feeding roller; 343. Intermediate slide column; 344. Synchronous tensioning slide bar; 345. Pulling arm; 346. Connecting mounting shaft; 348. Radial slide groove; 349. Annular mounting groove; 340. Outer mounting end cylinder; 360. Sliding cavity; 362. Adjustment groove; 363. Preset installation slot; 364. Connecting ring; 35. Wire feeding adjustment element; 351. Wire feeding adjustment cylinder; 352. Wire feeding return spring; 353. Wire feeding pressing hook; 354. Pressing hook spring; 355. Radial pressing slot; 356. Spring closing plate; 40. Wire cutting frame; 41. Vertical adjustment slide; 42. Vertical adjustment motor; 421. Adjusting screw; 43. Lower mounting slot; 50. Upper wire tool assembly; 51. Upper wire tool intermediate shell; 511. Upper wire passage slot; 510. Cutting... 512. Wire cutting wheel; 513. Wire mounting plate; 52. Upper wire tool longitudinal plate; 53. Wire guide frame; 54. Wire adjusting frame; 55. Synchronous turntable; 56. Wire rotating shaft; 57. Wire guiding element; 58. Wire rotating arm; 59. Wire driving cylinder; 50. Synchronous buffer; 510. Wire base shell; 52. Wire wheel adjusting cylinder; 531. Wire rotating wheel; 54. Upper wire tool adjusting element; 55. Lateral adjusting mounting plate; 56. Lateral adjusting frame; 57. Upper wire end frame; 58. Upper wire cutting wheel; 59. Adjustment... 546. Cutting groove; 547. Conductive guide wheel; 60. Vertical through groove; 61. Lower wire tool assembly; 62. Lower wire tool mounting platform; 63. Synchronizing cylinder; 64. Lower wire tool synchronizing element; 65. Lower inner rotating arm; 66. Lower outer rotating arm; 67. Inner telescopic device; 68. Outer telescopic buffer; 69. Scissor-type rotating arm; 60. Limiting arc plate; 61. Arc-shaped slide groove; 62. Limiting slide column; 63. Lower wire tool element; 64. Lower cutting frame; 64. Lower cutting wheel; 64. Lower cutting groove; 65. Lower cutting through groove. Detailed Implementation

[0028] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0029] In the description of this invention, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figures 1 to 10A slow wire cutting device includes a cutting bed 10, a three-axis worktable 20, a wire feeding assembly 30, a cutting wire frame 40, an upper wire tool assembly 50, and a lower wire tool assembly 60. The bottom of the three-axis worktable 20 is installed at one end of the top surface of the cutting bed 10, and a lifting shell 11 is provided at the other end of the top surface of the cutting bed 10. Movable slide rails 12 protrude from both ends of the top of the lifting shell 11, and a moving drive motor 13 is provided in the middle of the top of the lifting shell 11. The wire feeding assembly 30 includes a wire feeding moving seat 31, two wire feeding mounting boxes 32, a wire feeding rotating motor 33, a wire feeding roller element 34, and a wire feeding adjusting element 35. The bottom ends of the wire feeding moving seat 31 are slidably installed in the two movable slide rails 12, and the wire feeding moving seat 31 is connected to the output shaft of the moving drive motor 13. The bottoms of the two wire feeding mounting boxes 32 are respectively installed on both sides of the top of the wire feeding moving seat 31, and each wire feeding mounting box 32 has one side... The middle part of the cutting bed 10 has a recessed wire feeding mounting hole 321. The wire feeding motor 33 is installed inside the wire feeding mounting box 32 located inside the cutting bed 10. The wire feeding roller element 34 is installed in the two wire feeding mounting holes 321 and is connected to the output shaft of the wire feeding motor 33. The wire feeding adjustment element 35 is installed in the wire feeding roller element 34. The bottom of the cutting wire frame 40 is installed inside the middle part of the top surface of the cutting bed 10. The top of the cutting wire frame 40 has a recessed vertical adjustment groove 41. The top of the cutting wire frame 40 is equipped with a vertical adjustment motor 42. The output shaft of the vertical adjustment motor 42 is equipped with an adjustment screw 421. The middle part of the outer side of the cutting wire frame 40 has a recessed lower mounting groove 43. The upper wire tool assembly 50 is slidably installed in the vertical adjustment groove 41 and is connected to the adjustment screw 421. The lower wire tool assembly 60 is installed in the lower mounting groove 43.

[0032] The wire feeding roller element 34 includes an inner mounting end cylinder 341, an outer mounting end cylinder 340, a wire feeding roller 342, a central slide column 343, four synchronous tensioning slide bars 344, and eight traction swing arms 345. The outer wall of the inner mounting end cylinder 341 is mounted in the middle of a wire feeding mounting hole 321 located inside the cutting bed 10. The outer wall of the outer mounting end cylinder 340 is slidably mounted in the middle of another wire feeding mounting hole 321. An annular mounting groove 349 is recessed on the outer side of the outer mounting end cylinder 340. A sliding cavity 360 is recessed in the middle of the outer side of the wire feeding roller 342. The outer walls of the wire feeding roller 342 are rotatably mounted in two wire feeding mounting holes 321 on both sides. A connecting mounting shaft 346 protrudes from the inner side of the wire feeding roller 342. The connecting mounting shaft 346 passes through the inner cavity of the inner mounting end cylinder 341 and connects with the wire feeding roller. The output shaft of the motor 33 is connected. Four radial grooves 348 are recessed on both sides of the inner wall of the sliding cavity 360 along the circumferential direction. The middle sliding column 343 is slidably installed in the sliding cavity 360. A connecting ring 364 is protruding on the outer side of the outer wall of the middle sliding column 343. The connecting ring 364 is connected to the inner wall of the outer mounting end cylinder 340. Four adjusting grooves 362 are recessed on the inner side and middle part of the outer wall of the middle sliding column 343 along the circumferential direction. Four synchronous tensioning slide bars 344 are slidably installed in the four radial grooves 348. Pre-set mounting slots 363 are recessed on both sides of the inner wall of each synchronous tensioning slide bar 344. One end of each of the eight traction arms 345 is rotatably installed in the eight pre-set mounting slots 363. The other end of each of the eight traction arms 345 is rotatably installed in the middle of the eight adjusting slots 362.

[0033] The wire feeding adjustment element 35 includes a wire feeding adjustment cylinder 351, a wire feeding return spring 352, a wire feeding clamping hook 353, and a clamping hook spring 354. The inner side of the outer wall of the wire feeding adjustment cylinder 351 is installed on the outer side of the wire feeding mounting hole 321 located on the outer side of the cutting bed 10, and the outer side of the outer wall of the intermediate sliding column 343 is slidably installed on the inner wall of the wire feeding adjustment cylinder 351. One end of the wire feeding return spring 352 is installed in the annular mounting groove 349, and the other end of the wire feeding return spring 352 is installed on the wire feeding adjustment cylinder 351. On the inner side of the cylinder 351, a radial pressing groove 355 is recessed at the top of the outer wall of the wire feeding adjusting cylinder 351. A spring sealing plate 356 is provided on the inner side of the radial pressing groove 355. The middle part of the wire feeding pressing hook 353 is rotatably installed in the middle of the radial pressing groove 355, and the outer side of the bottom surface of the wire feeding pressing hook 353 abuts against the outer wall of the intermediate sliding column 343. One end of the pressing hook spring 354 is connected to the inner side of the wire feeding pressing hook 353, and the other end of the pressing hook spring 354 is connected to the inner side of the spring sealing plate 356.

[0034] The upper wire assembly 50 includes an upper wire intermediate shell 51, a wire guide frame 52, a wire guide element 53, and an upper wire adjustment element 54. The upper wire intermediate shell 51 is slidably installed in the vertical adjustment groove 41 at the center of its inner side, and a threaded connecting block is protruding at the center of its inner side. The adjusting screw 421 is threadedly connected to the threaded connecting block. The upper wire passage groove 511 is recessed at the center of the top surface of the upper wire intermediate shell 51. Cutting wire guide wheels 510 are rotatably installed at both ends of the upper wire passage groove 511. A wire mounting plate 512 is protruding at the top of the inner end of the upper wire intermediate shell 51, and an upper wire longitudinal plate 513 is protruding at the top of the outer end of the upper wire intermediate shell 51. The wire mounting plate 512 is connected to the wire guide frame 52. The wire guide element 53 is installed in the wire guide frame 52, and the upper wire adjustment element 54 is slidably installed in the upper wire longitudinal plate 513.

[0035] A lead wire adjustment frame 521 is provided at the inner end of the lead wire frame 52, a synchronous turntable 522 is provided at the middle of the outer side of the lead wire frame 52, and lead wire rotating shafts 523 are respectively provided at both ends of the bottom surface of the lead wire frame 52.

[0036] The lead element 53 includes two lead rotating arms 531, a lead driving cylinder 532, a synchronous buffer 533, a lead bottom shell 534, a lead wheel adjusting cylinder 535, and a lead wheel 536. The tops of the two lead rotating arms 531 are rotatably mounted on the outside of the two lead rotating shafts 523, respectively. The top of the lead driving cylinder 532 is rotatably mounted on the top of the lead adjusting frame 521. The output shaft of the lead driving cylinder 532 is rotatably connected to the middle of one of the lead rotating arms 531. The top of the synchronous buffer 533 is rotatably connected to the synchronous turntable 522, and the bottom of the synchronous buffer 533 is rotatably connected to the middle of the other lead rotating arm 531. The top two ends of the lead bottom shell 534 are rotatably connected to the bottoms of the two lead rotating arms 531, respectively. The lead wheel adjusting cylinder 535 is mounted on the inner side of the bottom of the lead bottom shell 534, and the lead wheel 536 is rotatably mounted on the output shaft of the lead wheel adjusting cylinder 535.

[0037] The upper wire adjustment element 54 includes a horizontal adjustment mounting plate 541, a horizontal adjustment frame 542, an upper wire end frame 543, and an upper wire cutting wheel 544. The bottom of the horizontal adjustment mounting plate 541 is slidably mounted on the top of the upper wire longitudinal plate 513 via a vertical adjustment motor. The bottom of the horizontal adjustment frame 542 is slidably mounted on the top of the horizontal adjustment mounting plate 541 via a horizontal adjustment motor. The inner side of the upper wire end frame 543 is connected to the horizontal adjustment frame 542. The top of the upper wire end frame 543 is recessed with an adjustment cutting groove 545. A conductive guide wheel 546 is rotatably mounted on the inner end of the adjustment cutting groove 545. A vertical through groove 547 is recessed on the outer end of the top surface of the adjustment cutting groove 545. The upper wire cutting wheel 544 is rotatably mounted in the vertical through groove 547.

[0038] The lower wire tool assembly 60 includes a lower wire tool mounting platform 61, a synchronizing cylinder 62, a lower wire tool synchronizing element 63, and a lower wire tool element 64. The lower wire tool mounting platform 61 is installed in the lower mounting groove 43. The synchronizing cylinder 62 is rotatably installed on the outer end of the lower wire tool mounting platform 61. The lower wire tool synchronizing element 63 is rotatably installed on the inner end of the lower wire tool mounting platform 61. The lower wire tool element 64 is installed on the outer side of the lower wire tool synchronizing element 63.

[0039] The lower wire guide synchronization element 63 includes a lower inner rotating arm 631, a lower outer rotating arm 632, an inner telescopic device 633, and an outer telescopic buffer 634. The inner end of the lower inner rotating arm 631 is rotatably connected to the inner end of the lower wire guide mounting platform 61. The output shaft of the synchronization cylinder 62 is rotatably connected to the middle of the lower inner rotating arm 631. The inner telescopic device 633 is rotatably mounted in the middle of the lower inner rotating arm 631, and a scissor-type rotating arm 635 is provided at the outer end of the inner telescopic device 633. Limiting arc plates 636 are respectively provided on both sides of the outer end of the lower inner rotating arm 631. Each limiting arc plate... Each of the 636 is recessed with an arc-shaped sliding groove 637. The outer end of the lower outer rotating arm 632 is rotatably connected to the outer end of the lower inner rotating arm 631. The scissor-type rotating arm 635 is rotatably connected to the lower inner rotating arm 631 and the lower inner rotating arm 631. Limiting sliding pins 638 are respectively provided on both sides of the outer end of the lower outer rotating arm 632. The two limiting sliding pins 638 are slidably installed in the two arc-shaped sliding grooves 637. The inner side of the outer telescopic buffer 634 is rotatably connected to the inner end of the lower inner rotating arm 631. The outer end of the outer telescopic buffer 634 is rotatably connected to the inner end of the lower outer rotating arm 632.

[0040] The lower wire tool element 64 includes a lower cutting frame 641 and a lower cutting wheel 642. The inner side of the lower cutting frame 641 is connected to the outer side of the lower outer rotating arm 632. The outer side of the lower cutting frame 641 is recessed with a lower cutting groove 643. The bottom surface of the lower cutting frame 641 is recessed with a lower cutting passage groove 644. The lower cutting wheel 642 is rotatably installed in the lower cutting passage groove 644.

[0041] For example, in one embodiment: a pulse power supply is provided inside the cutting bed 10, and the pulse power supply is electrically connected to the conductive guide wheel 546 and the three-axis worktable 20. After one end of the electrode wire is wound onto the wire feeding roller 342, the other end is sequentially wound onto the lead wire roller 536, the two cutting wire lead wheels 510, the conductive guide wheel 546, the upper cutting wire roller 544, and the lower cutting wire roller 642, and then wound back onto the wire feeding roller 342.

[0042] An inclined annular surface is recessed on the outer side of the outer wall of the intermediate sliding column 343, so that the diameter of the intermediate sliding column 343 gradually increases from the outside to the inside, and the wire pressing hook 353 abuts against the inclined annular surface.

[0043] For example, in one embodiment: when cutting is required, the device to be cut is clamped onto the three-axis worktable 20 using a fixture, and a power circuit is formed between the device to be cut and the pulse power supply. Then, the wire feeding motor 33 is started to drive the connecting mounting shaft 346 and the wire feeding roller 342 to rotate, thereby causing the electrode wire to circulate and cut. At the same time, the synchronous cylinder 62 and the inner telescopic device 633 are activated according to the position of the device to be cut, thereby causing the lower inner rotating arm 631 to rotate and move outward, thereby causing the outer telescopic buffer 634 to rotate accordingly, thereby causing the lower outer rotating arm 632 to move accordingly, thereby causing the lower wire tool element 64 to move accordingly, thereby adjusting the position of the lower wire tool element 64, thereby adjusting the position of the electrode wire located on the lower cutting wire wheel 642. Furthermore, the longitudinal adjustment motor and the transverse adjustment motor are started synchronously, thereby adjusting the position of the upper wire end frame 543, thereby adjusting the position of the electrode wire located on the conductive guide wheel 546 and the upper cutting wire wheel 544, so that the electrode wire is accurately moved to the position adjacent to the device to be cut, and the cutting operation is performed on the device to be cut.

[0044] For example, in one embodiment: when tension fluctuations occur, the lead wire drive cylinder 532 will be activated, thereby driving the two lead wire rotating arms 531 to rotate around the two lead wire rotating shafts 523 respectively, thereby causing the lead wire base shell 534 to move accordingly, thereby causing the lead wire wheel adjusting cylinder 535 and the lead wire rotating wheel 536 installed therein to move accordingly, thereby adjusting the tension of the electrode wire, and thereby absorbing the tension fluctuations during the operation of the electrode wire. In addition, when the electrode wire vibrates or gets stuck during operation, it will cause the electrode wire to jam, tightening the electrode wire that is rotating on the wire feeding roller 342. This causes the four synchronous tensioning slides 344 to move inward, and the eight traction arms 345 to move accordingly. This causes the middle slide column 343 to slide outward, which in turn causes the connecting ring 364 and the outer mounting end cylinder 340 to move outward. This compresses the wire feeding return spring 352, thus creating a floating range for the electrode wire and protecting the electrode wire and the wire guiding system from damage. At the same time, a signal is sent to the wire feeding motor 33 and the pulse power supply to pause the cutting process. The outward movement of the middle slide column 343 will compress the pressure hook spring 354 to limit the retraction distance. The wire feeding return spring 352 and the pressure hook spring 354 are used to buffer the floating process and prevent wire breakage.

[0045] Installation process: The bottom ends of the wire feeding moving seat 31 are slidably installed in the two moving slide rails 12, and the wire feeding moving seat 31 is connected to the output shaft of the moving drive motor 13. The bottoms of the two wire feeding mounting boxes 32 are respectively installed on the top sides of the wire feeding moving seat 31. The wire feeding rotating motor 33 is installed inside the wire feeding mounting box 32 located inside the cutting bed 10. The outer wall of the inner mounting end cylinder 341 is installed in the middle of the wire feeding mounting rotating hole 321 located inside the cutting bed 10. The outer wall of the outer mounting end cylinder 340 is slidably installed in the middle of another wire feeding mounting rotating hole 321. The outer sides of the outer wall of the wire feeding roller 342 are rotatably installed in the two wire feeding mounting rotating holes 321. The middle sliding column 343 is slidably installed in the sliding cavity 360, and the connecting ring 364 is connected to the outer mounting end cylinder 340. The inner wall of the wire feeding adjustment cylinder 340 is connected, and four synchronous tensioning slide bars 344 are slidably installed in four radial slide grooves 348 respectively. One end of each of the eight traction rotating arms 345 is rotatably installed in one of the eight preset installation rotating grooves 363, and the other end of each of the eight traction rotating arms 345 is rotatably installed in the middle of one of the eight adjusting grooves 362 respectively. The inner side of the outer wall of the wire feeding adjustment cylinder 351 is installed on the outer side of the wire feeding installation rotating hole 321 located on the outer side of the cutting bed 10, and the outer side of the outer wall of the middle slide column 343 is slidably installed on the inner wall of the wire feeding adjustment cylinder 351. One end of the wire feeding return spring 352 is installed in the annular installation groove 349, and the other end of the wire feeding return spring 352 is installed on the inner side of the wire feeding adjustment cylinder 351. The middle part of the wire feeding pressing hook 353 is rotatably installed in the middle of the radial pressing rotating groove 355, and... The outer side of the bottom surface of the wire feeding crimping hook 353 abuts against the outer wall of the intermediate sliding column 343. One end of the crimping hook spring 354 is connected to the inner side of the wire feeding crimping hook 353, and the other end of the crimping hook spring 354 is connected to the inner side of the spring sealing plate 356. The middle part of the inner side of the upper wire tool intermediate shell 51 is slidably installed in the vertical adjustment slide groove 41. The adjusting screw 421 is threadedly connected to the threaded connecting block. The lead wire mounting plate 512 is connected to the lead wire frame 52. The tops of the two lead wire rotating arms 531 are rotatably installed on the outer side of the two lead wire rotating shafts 523, respectively. The top of the lead wire drive cylinder 532 is rotatably installed on the top of the lead wire adjustment frame 521. The output shaft of the lead wire drive cylinder 532 is rotatably connected to the middle part of one of the lead wire rotating arms 531. The top of the synchronous buffer 533 is rotatably connected to the synchronous turntable 522. The bottom of the synchronous buffer 533 is rotatably connected to the middle of another lead wire rotating arm 531. The top two ends of the lead wire base shell 534 are rotatably connected to the bottoms of the two lead wire rotating arms 531 respectively. The lead wire wheel adjusting cylinder 535 is installed on the inner side of the bottom of the lead wire base shell 534. The lead wire rotating wheel 536 is rotatably installed on the output shaft of the lead wire wheel adjusting cylinder 535. The bottom of the transverse adjusting mounting plate 541 is slidably installed on the top of the upper wire tool longitudinal plate 513 via the longitudinal adjusting motor. The bottom of the transverse adjusting frame 542 is slidably installed on the top of the transverse adjusting mounting plate 541 via the transverse adjusting motor. The inner side of the upper wire end frame 543 is connected to the transverse adjusting frame 542. The upper wire cutting wheel 544 is rotatably installed in the vertical through slot 547. The lower wire tool mounting platform 61 is installed in the lower mounting slot 43.Synchronous cylinder 62 is rotatably mounted on the outer end of lower wire mounting platform 61. The inner end of lower inner rotating arm 631 is rotatably connected to the inner end of lower wire mounting platform 61. The output shaft of synchronous cylinder 62 is rotatably connected to the middle of lower inner rotating arm 631. Inner telescopic device 633 is rotatably mounted on the middle of lower inner rotating arm 631. The outer end of lower outer rotating arm 632 is rotatably connected to the outer end of lower inner rotating arm 631. Scissor-type rotating arm 635 is rotatably connected to both lower inner rotating arm 631 and lower inner rotating arm 631. Two limiting sliding pins 638 are slidably mounted in two arc-shaped sliding grooves 637. The inner side of outer telescopic buffer 634 is rotatably connected to the inner end of lower inner rotating arm 631. The outer end of outer telescopic buffer 634 is rotatably connected to the inner end of lower outer rotating arm 632. The inner side of lower cutting frame 641 is connected to the outer side of lower outer rotating arm 632. Lower cutting wire wheel 642 is rotatably mounted in lower cutting through groove 644.

[0046] This invention can achieve: 1. This invention utilizes the upper wire assembly 50 and the lower wire assembly 60 to achieve fully synchronous position adjustment of the upper and lower ends of the electrode wire, ensuring that the electrode wire maintains precise verticality or preset taper throughout the entire cutting stroke. Furthermore, the inner telescoping device 633 and the outer telescoping buffer 634 installed in the lower wire synchronization element 63 can provide lateral floating position adjustment for the lower cutting frame 641 to prevent the workpiece from deforming and clamping the electrode wire during cutting due to internal stress release, which could lead to electrode wire breakage. In addition, the lead wire element 53 is used to adjust the tension of the electrode wire in real time to ensure stability during the cutting process.

[0047] 2. In the event of wire jamming or vibration causing sudden tightening of the electrode wire, the wire conveying roller element 34 can leave a floating range for the electrode wire, protecting the electrode wire and the wire guiding system from damage. Furthermore, the synchronous tensioning slide bar 344 retracts evenly inward during the retraction process, with symmetrical force, preventing the electrode wire from deviating from the groove due to uneven load. At the same time, it can perform double-stage buffering to protect the electrode wire from breakage and extend the service life of the equipment.

[0048] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A slow wire EDM cutting device, characterized in that: The system includes a cutting bed (10), a three-axis worktable (20), a wire feeding assembly (30), a wire cutting frame (40), an upper wire feeder assembly (50), and a lower wire feeder assembly (60). The bottom of the three-axis worktable (20) is installed at one end of the top surface of the cutting bed (10), and a lifting shell (11) is provided at the other end of the top surface of the cutting bed (10). The top two ends of the lifting shell (11) are respectively provided with moving slide rails (12), and a moving drive motor (13) is provided in the middle of the top of the lifting shell (11). The wire feeding assembly (30) is also provided with a wire feeding assembly (60). 0) Includes a wire feeding moving seat (31), two wire feeding mounting boxes (32), a wire feeding rotating motor (33), a wire feeding roller element (34), and a wire feeding adjusting element (35). The bottom ends of the wire feeding moving seat (31) are slidably installed in two moving slide rails (12), and the wire feeding moving seat (31) is connected to the output shaft of the moving drive motor (13). The bottoms of the two wire feeding mounting boxes (32) are respectively installed on the top sides of the wire feeding moving seat (31). The middle part of one side of each wire feeding mounting box (32) is concave. A wire feeding mounting hole (321) is provided. The wire feeding motor (33) is installed inside the wire feeding mounting box (32) located inside the cutting bed (10). The wire feeding roller element (34) is installed in the two wire feeding mounting holes (321), and the wire feeding roller element (34) is connected to the output shaft of the wire feeding motor (33). The wire feeding adjustment element (35) is installed in the wire feeding roller element (34). The bottom of the cutting wire frame (40) is installed inside the middle of the top surface of the cutting bed (10). 40) A vertical adjustment groove (41) is recessed at the top. A vertical adjustment motor (42) is installed at the top of the wire cutting frame (40). An adjustment screw (421) is installed on the output shaft of the vertical adjustment motor (42). A lower mounting groove (43) is recessed in the middle of the outer side of the wire cutting frame (40). The upper wire tool assembly (50) is slidably installed in the vertical adjustment groove (41) and connected to the adjustment screw (421). The lower wire tool assembly (60) is installed in the lower mounting groove (43).

2. The slow wire cutting device according to claim 1, characterized in that: The wire feeding roller element (34) includes an inner mounting end cylinder (341), an outer mounting end cylinder (340), a wire feeding roller (342), an intermediate slide column (343), four synchronous tensioning slide bars (344), and eight traction swing arms (345). The outer wall of the inner mounting end cylinder (341) is mounted in the middle of the wire feeding mounting hole (321) located inside the cutting bed (10), and the outer wall of the outer mounting end cylinder (340) is slidably mounted in another wire feeding mounting hole (321). 321) In the middle, an annular mounting groove (349) is recessed on the outer side of the outer mounting end cylinder (340), and a sliding cavity (360) is recessed in the middle of the outer side of the wire conveying roller (342). The outer sides of the wire conveying roller (342) are respectively rotatably mounted in two wire conveying mounting holes (321). A connecting mounting shaft (346) is protruding on the inner side of the wire conveying roller (342). The connecting mounting shaft (346) passes through the inner cavity of the inner mounting end cylinder (341) and connects with the inner mounting end cylinder (341). The output shaft of the wire-carrying rotating motor (33) is connected. Four radial grooves (348) are recessed on both sides of the inner wall of the sliding cavity (360) along the circumferential direction. The middle sliding column (343) is slidably installed in the sliding cavity (360). A connecting ring (364) is protruding on the outer side of the outer wall of the middle sliding column (343). The connecting ring (364) is connected to the inner wall of the outer mounting end cylinder (340). Four adjusting grooves (362) are recessed on the inner side and middle part of the outer wall of the middle sliding column (343) along the circumferential direction. Four synchronous tensioning slides (344) are slidably installed in the four radial grooves (348). Pre-set mounting grooves (363) are recessed on both sides of the inner wall of each synchronous tensioning slide (344). One end of each of the eight traction arms (345) is rotatably installed in the eight pre-set mounting grooves (363). The other end of each of the eight traction arms (345) is rotatably installed in the middle of the eight adjusting grooves (362).

3. The slow wire cutting device according to claim 2, characterized in that: The wire feeding adjustment element (35) includes a wire feeding adjustment cylinder (351), a wire feeding return spring (352), a wire feeding clamping hook (353), and a clamping hook spring (354). The inner side of the outer wall of the wire feeding adjustment cylinder (351) is installed on the outer side of the wire feeding mounting hole (321) located on the outer side of the cutting bed (10), and the outer side of the outer wall of the intermediate sliding column (343) is slidably installed on the inner wall of the wire feeding adjustment cylinder (351). One end of the wire feeding return spring (352) is installed in the annular mounting groove (349), and the other end of the wire feeding return spring (352) is installed on the wire feeding adjustment cylinder. The inner side of the cylinder (351) has a radial pressing groove (355) recessed at the top of the outer wall of the wire feeding adjustment cylinder (351). A spring sealing plate (356) is provided inside the radial pressing groove (355). The middle part of the wire feeding pressing hook (353) is rotatably installed in the middle part of the radial pressing groove (355), and the outer side of the bottom surface of the wire feeding pressing hook (353) abuts against the outer wall of the middle sliding column (343). One end of the pressing hook spring (354) is connected to the inner side of the wire feeding pressing hook (353), and the other end of the pressing hook spring (354) is connected to the inner side of the spring sealing plate (356).

4. The slow wire cutting device according to claim 3, characterized in that: The upper wire assembly (50) includes an upper wire intermediate shell (51), a lead wire holder (52), a lead wire element (53), and an upper wire adjustment element (54). The upper wire intermediate shell (51) is slidably installed in the vertical adjustment groove (41) at the center of its inner side, and a threaded connecting block is protruding at the center of the inner side of the upper wire intermediate shell (51). The adjusting screw (421) is threadedly connected to the threaded connecting block. The upper wire passage groove (511) is recessed at the center of the top surface of the upper wire intermediate shell (51). The wire passes through the groove (511) and is provided with cutting wire guide wheels (510) at both ends. The top of the inner end of the upper wire tool intermediate shell (51) is provided with a wire mounting plate (512). The top of the outer end of the upper wire tool intermediate shell (51) is provided with an upper wire tool longitudinal plate (513). The wire mounting plate (512) is connected to the wire guide frame (52). The wire guide element (53) is installed in the wire guide frame (52). The upper wire tool adjusting element (54) is slidably installed in the upper wire tool longitudinal plate (513).

5. The slow wire cutting device according to claim 4, characterized in that: A lead wire adjustment frame (521) is provided at the inner end of the lead wire frame (52), a synchronous turntable (522) is provided at the middle of the outer side of the lead wire frame (52), and lead wire rotating shafts (523) are provided at both ends of the bottom surface of the lead wire frame (52).

6. The slow wire cutting device according to claim 5, characterized in that: The lead element (53) includes two lead arms (531), a lead drive cylinder (532), a synchronization buffer (533), a lead base (534), a lead wheel adjusting cylinder (535), and a lead wheel (536). The tops of the two lead arms (531) are rotatably mounted on the outside of the two lead shafts (523), and the top of the lead drive cylinder (532) is rotatably mounted on the top of the lead adjusting frame (521). The output shaft of the lead drive cylinder (532) is connected to one of the lead arms. (531) The middle part is rotatably connected, the top of the synchronous buffer (533) is rotatably connected to the synchronous turntable (522), the bottom of the synchronous buffer (533) is rotatably connected to the middle part of another lead wire rotating arm (531), the top two ends of the lead wire bottom shell (534) are rotatably connected to the bottom of the two lead wire rotating arms (531) respectively, the lead wire wheel adjusting cylinder (535) is installed on the inner side of the bottom of the lead wire bottom shell (534), and the lead wire rotating wheel (536) is rotatably installed on the output shaft of the lead wire wheel adjusting cylinder (535).

7. The slow wire cutting device according to claim 6, characterized in that: The upper wire adjustment element (54) includes a horizontal adjustment mounting plate (541), a horizontal adjustment frame (542), an upper wire end frame (543), and an upper wire cutting wheel (544). The bottom of the horizontal adjustment mounting plate (541) is slidably mounted on the top of the upper wire longitudinal plate (513) via a vertical adjustment motor. The bottom of the horizontal adjustment frame (542) is slidably mounted on the top of the horizontal adjustment mounting plate (541) via a horizontal adjustment motor. The inner side of the upper wire end frame (543) is connected to the horizontal adjustment frame (542). The top of the upper wire end frame (543) is recessed with an adjustment cutting groove (545). A conductive guide wheel (546) is rotatably mounted on the inner end of the adjustment cutting groove (545). A vertical through groove (547) is recessed on the outer end of the top surface of the adjustment cutting groove (545). The upper wire cutting wheel (544) is rotatably mounted in the vertical through groove (547).

8. The slow wire cutting device according to claim 7, characterized in that: The lower wire assembly (60) includes a lower wire mounting platform (61), a synchronizing cylinder (62), a lower wire synchronizing element (63), and a lower wire element (64). The lower wire mounting platform (61) is installed in the lower mounting groove (43). The synchronizing cylinder (62) is rotatably installed on the outer end of the lower wire mounting platform (61). The lower wire synchronizing element (63) is rotatably installed on the inner end of the lower wire mounting platform (61). The lower wire element (64) is installed on the outer side of the lower wire synchronizing element (63).

9. The slow wire cutting device according to claim 8, characterized in that: The lower wire guide synchronization element (63) includes a lower inner rotating arm (631), a lower outer rotating arm (632), an inner telescopic device (633), and an outer telescopic buffer (634). The inner end of the lower inner rotating arm (631) is rotatably connected to the inner end of the lower wire guide mounting platform (61). The output shaft of the synchronization cylinder (62) is rotatably connected to the middle of the lower inner rotating arm (631). The inner telescopic device (633) is rotatably mounted in the middle of the lower inner rotating arm (631), and a scissor-type rotating arm (635) is provided at the outer end of the inner telescopic device (633). Limiting arc plates (636) are respectively provided on both sides of the outer end of the lower inner rotating arm (631). Each limiting arc plate (636) is provided with an arc-shaped groove (637) on the upper side. The outer end of the lower outer rotating arm (632) is rotatably connected to the outer end of the lower inner rotating arm (631). The scissor-type rotating arm (635) is rotatably connected to the lower inner rotating arm (631) and the lower inner rotating arm (631). Limiting sliding columns (638) are provided on both sides of the outer end of the lower outer rotating arm (632). The two limiting sliding columns (638) are slidably installed in the two arc-shaped grooves (637). The inner side of the outer telescopic buffer (634) is rotatably connected to the inner end of the lower inner rotating arm (631). The outer end of the outer telescopic buffer (634) is rotatably connected to the inner end of the lower outer rotating arm (632).

10. The slow wire EDM cutting device according to claim 9, characterized in that: The lower wire tool component (64) includes a lower cutting frame (641) and a lower cutting wheel (642). The inner side of the lower cutting frame (641) is connected to the outer side of the lower outer rotating arm (632). The outer side of the lower cutting frame (641) is recessed with a lower cutting groove (643). The bottom surface of the lower cutting frame (641) is recessed with a lower cutting passage groove (644). The lower cutting wheel (642) is rotatably installed in the lower cutting passage groove (644).

Images