AAK has upgraded Japan's precision machining equipment, the stability of the 2 μm spool of hydraulic directional control valve has been guaranteed

China [CN]

Hogan is from Germany. In the past year, he has made 3 purchases from hydraulic cartridge valve manufacturer AAK. Recently, Hogan emailed us to ask if AAK can customize a hydraulic directional cartridge valve with spool accuracy within 2μm. The 2μm valve spool should not be difficult. I don't think the problem will be so simple, and didn't agree rashly. After further investigation, it was found that the hydraulic direction cartridge valve produced by the original hydraulic cartridge valve manufacturer had no problem to meet the spool accuracy during sample testing period. However, there was an accuracy deviation in the shipment of 360 pcs of hydraulic directional cartridge valves, which means a problem with the quality stability of the original hydraulic cartridge valve manufacturer. The boss was not satisfied with his purchase this time, which put a lot of pressure on Hogan. 

According to the hydraulic directional cartridge valve drawing sent by Hogan, the valve spool is smaller than the conventional one. 5 days later, we also received samples of hydraulic directional cartridge valves from the original manufacturer. Excluding the single problem of unstable precision of the valve spool, the overall manufacturing quality is actually good, whether material selection or appearance, which also indicates that Hogan is professional in choosing a hydraulic cartridge valve manufacturer.

According to Hogan's understanding of the original hydraulic cartridge valve manufacturer, their precision machining equipment is not inferior. I think the reason is that the positioning is not precise enough, which requires the experience of technicians. We have also stumbled in this area before. So we found a way to eliminate manual involvement and upgraded the automatic CNC cylindrical grinder from Japan. From picking up, placing, to positioning, we relied on computer program control to avoid human errors. Hogan asked us to shoot a video of this fully automatic equipment to compare with the processing production line of the original hydraulic cartridge valve manufacturer for the hydraulic directional cartridge valve spool.

From the video, we can see that the fully automatic CNC cylindrical grinding machine imported from Japan adopts the unique high rigidity dynamic pressure bearing of Tsugami, which has strong stability and high precision. The V-flat guide surface structure ensures the stability of the hydraulic direction cartridge valve spool accuracy in the precision machining process. As long as the positioning of the valve spool is accurate before machining, there will be no problem for the accuracy to be stable and within 2μm. How does AAK avoid human error in valve spool positioning? Hydraulic cartridge valve manufacturer AAK equipped this equipment with a dedicated fully automatic robotic arm, which is integrated into the same system as the grinding machine. After the equipment is started, the fully automatic robotic arm starts working first, automatically clamping the valve spool and feeding it into the fixture. The valve spool is automatically clamped and precision machining begins. After processing, the robotic arm clamps out the valve spool. The entire production process does not require the involvement of technicians.

3 days after Hogan received our video, he directly sent the PO for 360 pcs of hydraulic directional cartridge valves that had problems with the original hydraulic cartridge valve manufacturer.

AAK hydraulic directional cartridge valve, customizable, with stable accuracy, you can also try it out!

AAK HYDRAULIC CARTRIDGE VALVES (740) 2023-12-19

https://www.aakindustry.com/info-detail/directional-cartridge-valves-aak740