Operation and use of the hottest wind electric spa

Operation and use of long wind electric spark wire cutting

1. The left and right ends of the wire row of the wire storage cylinder should have a margin of 3~5mm. At the same time, a gap of 3~5mm between the wire rows of electrode wires should be guaranteed to prevent excessive travel and wire breakage caused by wire clamping

2. The height of the wire frame is adjusted according to the different height and thickness of the workpiece. Generally, the distance from the above wire frame to the upper surface of the workpiece is 10~20mm

3. The verticality of electrode wire can be corrected by light transmission method and discharge correction method. Long fiber injection process (hereinafter referred to as "LFI") is a series of system solutions developed by Klaus Murphy for fiber-reinforced lightweight structure, and the latter is generally used

4. In case of workpieces with high machining accuracy or polished surface, the method of multimeter resistance wire touching should be adopted for centering or starting point finding. Put the multimeter in the measuring resistance gear, connect either pole of the electric pen with the positive pole on the basic workbench of the machine tool, and connect the other pole of the electric pen of the multimeter with the workpiece, then slowly shake any one of the X or Y coordinates of the machine tool, pay close attention to the pointer or number change of the multimeter, try several times, and then the scale returns to zero. If it is divided, it must be shaken to the other end, and it must be the same as the pointer or number at the previous end. When finding the starting point, you must pay attention to the smaller the resistance value, the better

5. Before processing, check whether the electrode wire shakes. If it shakes, find out the cause first and solve the problem before processing

6. Pay attention to whether the electrode wire is in contact with the workpiece after wire calibration and before cutting. If it is in contact or uncertain whether it is in contact, turn off the high frequency first, then start the water pump motor, and finally start the wire conveying motor, otherwise it is very easy to burn the electrode wire

7. The guide wheel and bearing are high-speed moving parts, with a speed of more than 7000 revolutions per minute, and the working fluid with particles produced by melting and vaporization will penetrate into the bearing during processing, resulting in wear, causing radial or axial runout of the guide wheel, thus affecting the surface roughness and accuracy of the workpiece. If the guide wheel is normally used, its service life is generally 3-6 months (calculated as 8 hours per day). If there are sawtooth ripples on the surface of the cut workpiece (there are three kinds of veins on the surface of the workpiece cut by high and medium speed wire cutting, one is visible to the naked eye. For the equipment manufacturers of recycled plastic granulator, black and white stripes do not affect the quality of the processing surface, which belongs to filigree phenomenon (which will be introduced in detail later), It is not a problem of guide wheel bearing; One is rectangular stripe, which is high and low, which belongs to the problem of improper electrode wire and parameters. The other is serrated stripe, which is the problem of guide wheel or bearing). If the electrode wire jitters badly and is accompanied by the jumping noise of bearing, the guide wheel should be replaced. Note that the upper and lower guide wheels and bearings must be replaced together. During replacement, the bearing should be filled with high-speed grease. Generally, the grease will affect its service life. The bearing must be used with good sealing performance. When replacing the guide wheel and assembling, all relevant parts and tools should be cleaned with kerosene, preferably gasoline

8. Frequently check whether the conductive block and the electrode wire are in good and reliable contact. If the contact is not good, it will directly affect the processing process. (5) select the stability of the sample shape in the "sample parameters" column, which is easy to cause wire breakage. Due to the friction and conductivity of the electrode wire, the conductive block is easy to produce grooves, which is easy to break the electrode wire hard. Therefore, the relative position of the electrode wire and the conductive block should be adjusted in time, and at the same time, the spark phenomenon between the electrode wire and the conductive block should be prevented during cutting

9 when cutting the workpiece that needs to be controlled accurately through the two-dimensional code on the scanning box, the diameter of the electrode wire should be measured with the outside micrometer, and the unilateral discharge gap should be calculated. Generally speaking, 0.01mm is added to the radius of the electrode wire, which is what we often say. However, for the workpiece larger than 100mm, due to the influence of factors such as pulse width widening, the unilateral discharge gap should be increased appropriately. If you need to adjust parameters during processing, remember to stop cutting first, and then resume cutting after adjustment, otherwise it is very easy to burn electrical components due to poor contact

10. It should be noted that the cutting programming must start from the thinnest part of the workpiece to avoid deformation and scrap the workpiece

11. For the workpiece with high machining accuracy requirements, two or more times of cutting can be adopted, and the discharge interval between each time and the next time is set to be about 0.03~0.05mm

10. Because the oxide is not conductive, if there is an oxide layer on the surface of the workpiece, it must be removed or manually cut in (the pulse width must be increased and the number of power amplifier tubes must be increased). It is not allowed to use the controller to control the automatic cut in, otherwise it is easy to cause wire breakage due to poor conductivity

11. During the cutting process, pay attention to whether the workpiece liquid wraps the electrode wire. If it is blocked, it needs to be dredged in time, otherwise the workpiece will have a poor finish and even broken wire. In addition, the water flow does not need to be too large, and the water flow below should be larger than that above

12. After the high frequency is turned on, do not touch the two poles of the high frequency power supply (the negative pole of the bed and the positive pole of the workpiece) with hands or conductive tools at the same time to prevent electric shock

13. High thickness cutting: when the voltage is adjusted to 100v~110v, the overall energy of the high-frequency power supply can be increased, and the high-frequency sampling signal (high-frequency sampling line, that is, the line on the conductive block near the rear unilateral guide wheel of the upper wire frame) can be strengthened. The working fluid with high pulse width and relatively high concentration is used for cutting. When cutting workpieces with a thickness of more than 150mm, the processing current should be controlled below 2.5A

14. Return to zero: after finding the cutting starting point, you must lock the X and Y coordinates and return to zero before feeding, so as to prevent problems in the middle but unable to find the original starting point, resulting in cutting errors