Micro-cutting technique for superposition type valve plates of hydraulic multiple directional control valve

Abstract

The invention discloses a micro-cutting technique for superposition type valve plates of a hydraulic multiple directional control valve. In the technique, each superposition plate of an superposition type valve body of the hydraulic multiple directional control valve is finely cast; and the cutting and machining allowance is reduced to 120 percent of the amount for satisfying the micro-cutting demand; micro cutting is implemented on the valve plate; abrading and micro cutting are directly implemented on the superposition surfaces of the valve plates to the designed size and technology requirements of a workpiece; and machine tool micro cutting is implemented on the non-superposition surfaces of the valve plates to the designed size of the workpiece. The invention relates to a micro-cutting technique route designed according to the specific structure of the superposition type valve plates of the hydraulic multiple directional control valve. The novel micro-cutting technique can save cutting procedures by one third to one half, reduces the cutting volume and cutting hours, reduces the cutting cost, saves raw materials for manufacturing workpiece blanks of the superposition plates, saves the costs of devices, electric power, cutters and the like, and reduces the cutting cost. Repeated tests show that the micro-cutting technique can guarantee the machining quality of the superposition type valve plates of the hydraulic multiple directional control valve.

Description

Technical field [0001] The invention relates to a processing technology of a metal workpiece, in particular to a micro-cutting processing technology of a laminated valve plate of a hydraulic multi-way reversing valve. Background technique [0002] At present, the machining of metal workpieces almost all adopt the cutting process of the workpiece blank. The hydraulic multi-way reversing valve laminated valve plate is not without exception using this processing method. Generally, the rough contour size of each valve disc of the hydraulic multi-way directional valve superimposed valve disc must be left at least with a machining allowance of 3mm larger than the specified size of the workpiece design, and then mechanically cut by the machine tool, leaving a machining allowance of only 0.3 mm, and then use a surface grinder for finishing, the process of smoothing the surface of each valve plate overlapped, so that the entire valve body has good sealing performance after the valve plat...

AI Technical Summary

Problems solved by technology

The traditional processing technology of the above-mentioned hydraulic multi-way reversing valve stacked valve plate requires multiple cutting processes, low work efficiency, waste of raw materials, and increases the loss of equipment, electricity, and tools.