[0021] Such as figure 1 with figure 2 As shown, the present invention provides a fully automatic pore discharge machine, including a frame 1, a lifting plate 2, a positioning bracket 3, an electrode wire 4, a rotating head 5, a driving device and a control system 7, and the lifting plate 2 is arranged at the positioning On the bracket 3, the positioning bracket 3 is arranged on the frame 1, the rotating head 5 is connected with the lifting plate 2, and the rotating head 5 is connected with a driving device, the driving device is a servo motor, and the driving device can drive the rotating head 5 to rotate.
[0022] The wire electrode 4 is fixed on the rotating head 5 and extends in the direction of the frame 1. The rotation of the rotating head 5 can drive the wire electrode 4 to rotate together, so that the wire electrode 4 contacts the workpiece to be processed, and the metal is eroded by pulse spark discharge. Thus, a hole is formed in the workpiece to be processed. The electrode wire 4 is set as a hollow copper tube, the diameter of which can be selected as required.
[0023] The frame 1 is also provided with a metal worktable 6, and the control system is connected with the driving device. When the electrode wire 4 passes through the workpiece to be processed and a through hole is formed in the workpiece, the electrode wire 4 contacts the worktable 6, and the worktable 6 It forms an energized circuit with the wire electrode 4 and sends a signal to the control system 7 so that the control system 7 controls the lifting plate 2 to bring the rotating head 5 and the wire electrode 4 back. However, if the wire electrode 4 does not penetrate the workpiece to be processed, the wire electrode 4 cannot contact the worktable 6 and therefore cannot form an energization loop, and the control system 7 will not receive the retreat signal, but continue to move downward until Open the work piece to form a through hole.
[0024] Among them, the material of the workbench 6 is stainless steel, aluminum alloy, copper or aluminum. The workbench 6 of these materials has conductivity, and when the copper tube as the electrode wire 4 is in contact with it, a conductive path can be formed.
[0025] The control system 7 includes a display screen 71, a control panel 72, a host, a keyboard, and a control box 74. The display screen 71 and the control panel 72 are both arranged on the control box 74, and the host is electrically connected with the keyboard and the control box 74, respectively. Among them, the frame 1 is a closed box, and the host is placed in the box. The display screen 71 can display the position, size and distribution of the holes to be processed on the workpiece and the parameter setting box. The control panel 72 is provided with a start key, a close key, a pause key, an up key, a down key, and a Left and right keys, etc., from the keyboard, you can enter parameters (such as the speed of the wire electrode 4 rotation, the speed of the wire electrode 4 downward movement, and the speed of the wire electrode 4 retracting, etc.).
[0026] An alarm device 8 is provided on the control box 74. When all the fine holes on the workpiece to be processed are processed or the remaining length of the electrode wire 4 is less than 5mm, the alarm device 8 gives an alarm to remind the operator to take out the processed workpiece and put it in New workpiece to be processed; or remind the operator to change to a new electrode wire 4.
[0027] The control box 74 is also provided with a USB interface 73. The control box 74 reads the designed drawings of the size and distribution of the holes to be processed on the workpiece through the USB interface 73 and transmits them to the host. Among them, the drawing is in CAD format. The drawing is uploaded to the control box 74 through a data storage device such as a USB flash drive, and further uploaded to the host computer. Then the host computer can control the electrode wire 4 in the workpiece to be processed according to the requirements of the drawing. Process fine holes.
[0028] The workbench 6 is set on the support plate 9. The support plate 9 is fixed on the frame 1 through the front and rear slide rails 10 and the left and right slide rails 11. The support plate 9 is driven by the control system 7 to drive the workbench and the workpiece to be processed. Move back and forth and left and right. In order to prevent the debris on the workpiece from splashing out during the processing, a fence 17 is provided around the workbench 6, and the fence 17 is made of plastic. A storage box is formed on the front and rear slide rails 10, and the storage box includes a hollow hexagonal frame and a drawer-type accommodating slot arranged in the frame. The keyboard is placed in the accommodating slot, and the accommodating slot can Slide back and forth in the frame to facilitate the operation of the keyboard.
[0029] The lifting plate 2 is connected with a servo motor, and the servo motor is connected with the control system 7. The control system 7 can control the action of the servo motor, and then control the rising and falling of the lifting plate 2, so as to bring the rotating head 5 and the electrode wire 4 up or down.
[0030] An elastic connecting piece 12 is arranged under the lifting plate 2, and a fixing block 14 is connected to the elastic connecting piece 12 through a connecting block 13. The fixing block 14 is connected with a hollow fixing post 15 through which the electrode wire 4 can pass. The slender wire electrode 4 can be fixed, and the problem of inaccurate position of the pores caused by the sliding of the wire electrode 4 during the processing can be prevented. The elastic fixing member 12 is composed of folded elastic pieces, and adjacent elastic pieces are connected to each other.
[0031] The lifting plate 2 is also provided with a handle 16 which can manually drive the elastic connecting member 12 to move up and down. By shaking the handle 16, the elastic fixing member 12 can be loosened (moved down) or tightened, so that the distance between the fixed post 15 and the worktable 6 can be reduced or enlarged, so that the electrode wire 4 can be fixed by the fixed post 15 s position.
[0032] When working, first place the workpiece to be processed on the worktable 6, and then upload the drawings of the size and distribution of the holes to be processed on the workpiece to the control box 74 through the USB interface 73, and then upload it to the host ; Then the control system 7 is turned on, and the control system 7 controls the action of the servo motor, so that the servo motor drives the lifting plate 2 to move downwards. At the same time, the control system 7 drives the device so that the drive device drives the rotating head 5 to rotate with the electrode wire 4, The wire electrode 4 is processed on the workpiece, and the workpiece is subjected to pulse spark discharge erosion to remove metal, that is, the electric discharge between the wire electrode 4 and the metal part to be processed produces high temperature corrosion of the metal to achieve the purpose of perforation, and the water as the medium is removed from the wire electrode 4 Through the holes, it plays a role of cooling and chip removal. When the hole is opened, the electrode wire 4 is in contact with the worktable 6 and the signal is sent to the control system 7. The control system 7 receives the signal and then controls the lifting plate 2 to rise and retreat and move according to the requirements of the drawing and the set sequence Go to the top of the next position to be punched on the workpiece, and perform the next punching operation.
[0033] In a word, the present invention sets the workbench 6 and the control system 7 made of metal material, so that when the hole on the workpiece is opened, the electrode wire 4 and the workbench 6 are in direct contact and conduction. Due to the induction effect of electricity, the control system 7 is turned on. After receiving the signal, the lifting plate 2 is controlled to retreat, so that the wire electrode 4 gradually leaves the workbench 6 to complete a punching operation. If the hole is not opened, the control system 7 cannot be caused because the wire electrode 4 is not in contact with the workbench 6 After receiving this signal, the control system 7 will not control the lifting plate 2 to retreat, but will make the lifting plate 2 continue to descend, so that the wire electrode 4 continues to drill into the workpiece until the hole is opened, and the wire electrode 4 is connected to the work piece. Station 6 is in direct contact. Therefore, the present invention can ensure that all holes are opened, thereby improving the processing yield. Moreover, the control system 7 of the present invention can automatically complete the processing of all the holes on the workpiece without any operation by the operator in the middle. Therefore, the present invention has a high degree of automation and high drilling efficiency, thereby reducing the number of operators. Reduce labor costs.
[0034] Based on the disclosure and teaching of the foregoing specification, those skilled in the art to which the present invention belongs can also make appropriate changes and modifications to the foregoing embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.
