The non-traditional machine tools widely used in production mainly include EDM and WEDM. Therefore, this paper mainly describes the safety operation procedures of these two kinds of special machining machine tools.
- Safe operation procedures for EDM machine tools
(1) Before starting the machine, carefully read the operation manual of the machine tool. If you are not familiar with the operation of the machine tool, you can avoid safety accidents.
(2) Before machining, pay attention to check the discharge gap, that is, a certain distance must be kept between the tool and the workpiece to form the discharge gap. It is generally 0.01-0.1mm. ,
(3) The clamping and calibration of the upper electrode must ensure that the feed direction of the tool electrode is perpendicular to the worktable plane.
Ensure that the output voltage pulse waveform of the pulse power supply on the workpiece and tool electrode added in the liquid medium is half
(5) There should be enough pulse discharge energy to ensure the metal melting or gasification in the discharge part.
(6) The discharge must be carried out in a liquid medium with constant insulation properties.
(7) During the operation, pay attention to check the filter element of the working fluid system. If the filter element is blocked, the working fluid should be replaced in time, which can automatically maintain a certain cleanliness.
(8) For the flammable type of working fluid in Sichuan, attention should be paid to fire prevention when using towel.
(9) To be civilized and strict, we must clean the working site and cut off the power supply of the system before leaving.
- Safety operation rules of WEDM
Because WEDM is developed on the basis of EDM, it uses wire electrode / (copper or copper wire, etc.) to cut the upper part by spark discharge. Therefore, the safety operation regulations of WEDM machine tool are roughly the same as those of EDM plus machine. In addition, attention should be paid to the following aspects in operation.
(1) In order to reduce the pulling range of wire electrode and improve the machining accuracy, it is necessary to ensure that the wire electrode has a certain pre tightening force during wire winding.
(2) Check that the working fluid system is equipped with a resin cartridge to ensure that the working fluid can move freely and maintain a certain resistivity.
(3) In the process of EDM, it is necessary to make the working fluid fully surround the electrode wire to prevent the wire breaking phenomenon caused by the heat generated by the electrode wire passing through the large pulse current.
(4) Strengthen the regular inspection of the mechanical device of the machine tool
(5) To achieve civilized production, after the end of processing operation, cut off the power supply of the system before leaving. Mouth lubrication. Must clean the workplace, wipe clean machine tools, and cut off the power supply before leaving
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