Valve element steel ball assembling technology

Abstract

The invention relates to a valve element steel ball assembling technology. The valve element steel ball assembling technology is characterized by comprising the following steps that firstly, a valve element is fixed in a valve element profiling die; secondly, a steel ball is placed in the steel ball end of the valve element; thirdly, a power device is started, a pressing plate conducts downward pressing, a pressing head downwards presses the steel ball placed in the steel ball end of the valve element, meanwhile, a conical expanding section of an adjusting threaded sleeve descends accordingly, the closing-up operation is conducted on the steel ball end of the valve element, and the inner diameter of an upper opening of the closed-up steel ball end of the valve element is smaller than the diameter of the steel ball; and fourthly, after the steel ball of the valve element is subjected to assembling and closing-up operation, the power device drives the pressing plate to ascend, a locking screw sleeve is loosened, and the valve element is taken out. The valve element steel ball assembling technology has the beneficial effects that during assembling, bending is not likely to happen, and meanwhile the steel ball is not likely to loosen; and during assembling, the adjusting time is short, the machining efficiency is high, the rejection rate is low, and the stable volume production link can be achieved.

Description

technical field [0001] The invention relates to a valve core steel ball assembly process. Background technique [0002] The valve core is the main component of various hydraulic pumps and plunger pumps. Different structures of the valve core have different functions. The sliding valve core mainly moves laterally in the valve body through the valve core, and controls the oil pressure at different positions. For control and feedback, due to the high matching accuracy of the valve core and the valve body, in order to reduce wear, the valve core needs to have a certain oil storage capacity, that is, the valve core has oil holes in the axial direction and is closed, and the steel ball seal is one of them. Afterwards, it is required that the steel ball will not loosen and slip out under a certain oil pressure. This type of valve core is a slender part, which is easy to bend during assembly and the steel ball is easy to loosen. The adjustment time during assembly is long, the proce...

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Problems solved by technology

[0002] The spool is the main component of various hydraulic pumps and plunger pumps. The spool with different structures has different functions. The spool spool mainly moves laterally in the valve body through the spool to control the oil pressure at different positions. Control and feedback function, due to the high precision of the valve core and the valve body, in order to reduce wear, the valve core is required to have a certain oil storage capacity, that is, the valve core has an oil hole in the axial direction and is closed, and the steel ball seal is one of them. Finally, it is required that the steel ball will not loosen and slide out under a certain oil pressure. This type of valve core is a slender part, which is easy to bend and the steel ball is easy to loose during assembly. The adjustment time is long, the processing efficiency is low, and the scrap rate is high. , it is difficult to enter the stable mass production link

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