Hydraulic integrated oil cylinder barrel and machining method thereof

Abstract

The invention provides a hydraulic integrated oil cylinder barrel and a machining method thereof. The machining method comprises the steps of workpiece blanking and rough turning machining, primary welding and flaw detection after welding, boring and grinding combination and fractional finish turning, secondary welding and flaw detection after welding, center hole punching and end face turning and grinding, third welding and flaw detection after welding, pressure resistance testing and follow-up treatment. On the premise that special tools, tools and equipment are not needed, an existing numerical control lathe, an existing deep hole boring machine, an existing deep hole honing machine tool and an existing universal cylindrical grinding machine are directly utilized, the technological process is reasonably arranged, technological parameters are determined, the machining precision of workpieces is reliably guaranteed, machining deformation is greatly prevented, and the flatness of the connecting plane of the cylinder bottom valve seat and the control valve set is guaranteed.

Description

technical field [0001] The invention belongs to the field of mechanical processing and hydraulic transmission, and in particular relates to a processing method of a hydraulic integrated oil cylinder barrel. Background technique [0002] The cylinder barrel of the hydraulic integrated oil cylinder is welded to the cylinder barrel through multiple welding parts such as the oil port, oil pipe, and cylinder bottom valve seat, so as to realize the integration of the inlet and outlet ports on the cylinder bottom valve seat of the cylinder barrel. Install the hydraulic control valve group directly on the cylinder barrel of the cylinder bottom valve seat. This kind of integrated oil cylinder simplifies the installation of the oil circuit of the hydraulic system, effectively reduces the installation and use space of the oil cylinder control pipeline, and avoids the disorder and confusion of the installation of the hydraulic cylinder control oil circuit and oil pipe. This kind of hydr...

AI Technical Summary

Problems solved by technology

However, the integrated cylinder barrel has many welding parts, large welding deformation, and poor structural craftsmanship; and at present, there is no effective and efficient processing method for this kind of integrated oil cylinder cylinder structure.

The welded parts such as the oil port and oil seat welded on the outer circle of the integrated oil cylinder are easy to affect the cylindricity of the inner hole of the cylinder during welding, which will increase the leakage in the integrated oil cylinder and reduce the performance

The cylinder bottom valve seat of the integrated oil cylinder must be welded to one end of the cylinder and connected to the valve group; when the cylinder bottom valve seat is welded to the cylinder, due to welding deformation, the cylinder bottom valve seat is connected to the control valve group The flatness of the plane does not meet the requirements, and the gap of the connecting surface under the high-pressure oil often causes the sealing ring to be damaged, and the oil sealing performance of the sealing ring decreases, and it is very easy for the hydraulic oil to run, pop, drip, and leak.

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