An AGIE CUT AC150F HSS low-speed wire cutting machine uses a high-pressure water pump M2 for flushing and threading. The vibration noise is large during operation, the water pressure is small and unstable, and the automatic threading work is not normal. Disassemble the spout and filter separately, the noise becomes small; plugging the spout and replacing the filter are invalid. Initial analysis, suspected that there are problems with the blades of the pump and the coupling of the motor and the pump body.

Because the high-pressure water pump of the machine tool is replaced by a domestic water pump, the effect is poor and the service life is short. Many AGIE CUT users now buy imported high-pressure pumps directly, but they are expensive and have a long delivery period. We analyzed and prepared to disassemble and repair it ourselves.

Disassembly process and solution: 1 Remove the power cord of the high-pressure water pump and mark it; 2Remove the cable plate and filter; 3Remove the connection nut between the pump body and the motor to separate the motor from the pump body, coupling No problem; 4Removal of the pump body, first use the pipe wrench to rotate the cast copper joint (the joint is screwed to the pump body), after unscrewing the joint, a series of centrifugal pump blades can be taken directly, with a cast copper bracket in between. There are 11 blades on the top and bottom, for a total of 22 pieces. After cleaning with water, it is found that the shaft hole of the blade is worn out and cannot be repaired, but it can also be used. The motor bushing in the cast copper bracket is the most worn, and the gap between the motor bushing and the cast copper bracket is about 1 mm.

Firstly solve the problem of large lateral swing, re-configure a motor bushing (with the inner hole of the cast copper bracket), so that the motor bushing can just rotate on the inner wall of the cast copper bracket to reduce the gap; then solve the axial turbulence problem. It is equipped with a hexagonal washer with a hexagonal motor shaft and is 0.6mm thick.

Assembly process: According to the order of disassembly, the assembled motor shaft is set in the cast copper bracket; then, 22 centrifugal blades are respectively installed on the two ends of the cast copper bracket through the motor shaft, and a hexagon is placed on every other blade pad. Washers, can not be too much, too much will have no gap between the shaft; reloading into the pump body, screwing the cast copper joint, the pump body is assembled; finally, the pump body and the motor are assembled together, the filter is installed And the wire plate, the high pressure water pump was successfully renovated.

After the repair, the effect of the high-pressure water pump reached the requirement of flushing and threading, and basically no noise. Users with AGIE CUT may wish to try a similar problem in a high-pressure threaded water pump.

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