Things that should be paid attention to during the maintenance of high accuracy mini universal turret milling machine are as follows:

(1) When taking out a certain circuit board from the whole machine, you should pay attention to record its corresponding position and connected cable number. For fixedly installed circuit boards, you should also remove the corresponding crimping parts and screws from front to back for recording. . The disassembled press parts and screws should be placed in a special box to avoid loss. After assembly, all contents in the box should be used, otherwise the assembly will be incomplete.

(2) The soldering iron should be placed in front of your hands, away from the repair circuit board. The soldering iron tip should be properly trimmed to adapt to the soldering of integrated circuits and avoid damaging other components during soldering.

(3) When measuring the resistance between lines, the power supply should be turned off. When measuring the resistance, the red and black test leads should be interchanged to measure twice, and the one with the larger resistance should be used as the reference value.

(4) Most circuit boards are covered with solder resist, so when measuring, you should find the corresponding solder joints as test points. Do not remove the solder mask. Some boards are all covered with insulating layers, and you can only scrape them off with a blade at the solder joints. Insulation.

(5) Printed circuits should not be cut off at will. Some maintenance personnel have some experience in repairing home appliances and are used to checking for broken wires. However, most of the circuit boards on CNC equipment are double-sided metal orifice boards or multi-layer perforated boards. The printed circuits are thin and dense. Once cut, it is difficult to weld and the lines are cut. Sometimes it is easy to cut off adjacent lines, and at some points, when cutting a certain line, it cannot be separated from the line, and it is necessary to cut several lines at the same time.

(6) Components should not be replaced at will. Some maintenance personnel just rely on the feeling that a component is broken without confirming the faulty component, and immediately replace it. This has a high misjudgment rate and a high rate of human damage to the removed components.

(7) When disassembling components, you should use a solder suction device and a solder suction rope, and do not remove them by force. The same pad should not be heated for a long time and disassembled repeatedly to avoid damage to the pad.

(8) When replacing a new device, its pins should be properly treated, and acidic soldering oil should not be used during welding.

(9) Record the switch and jumper positions on the line and do not change them at will. When performing a comparative inspection on two poles or above, or when exchanging components, be sure to mark the components on each board to avoid confusion, which may cause a good board to fail to work.

(10) Check the power supply configuration and type of the circuit board. According to the needs of the inspection, power can be supplied separately or completely. Pay attention to high voltage. Some circuit boards are directly connected to high voltage, or there is a high voltage generator inside the board, which needs to be properly insulated. Special attention should be paid during operation.

High accuracy mini universal turret milling machine startup and debugging

The high accuracy mini universal turret milling machine is a machine tool with high technical content that integrates electromechanical instruments. After the user buys a high accuracy mini universal turret milling machine, debugging is a critical step to ensure that it is turned on correctly and safely. Whether this step is correct or not will largely determine whether the high accuracy mini universal turret milling machine can achieve normal economic efficiency and its service life. This is very important to the manufacturers and users of the high accuracy mini universal turret milling machine. Factories are all important issues. When starting up the high accuracy mini universal turret milling machine, debugging should be carried out according to the following steps.

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