Ultra-precision machining process for aluminum alloy die-casting gearbox valve sleeve

Abstract

The invention discloses an ultra-precision machining technology for an aluminum alloy die-casting gearbox valve sleeve. The ultra-precision machining technology comprises the following steps that firstly, smelting is conducted; step 2, die casting; step 3, aging; step 4, shot blasting; 5, rough machining; step 6, finish machining; seventhly, magnetic polishing is conducted; step 8, cleaning; step 9, oxidation; and step 10, packaging. The polishing machine has the beneficial effects that multiple effects of deburring, chamfering, polishing, cleaning, environmental protection and the like can be achieved; the grinding and polishing device is suitable for grinding and polishing nonmetal workpieces such as metal workpieces, hard plastic workpieces, ceramic workpieces and silicon wafers; irregular parts, hole-shaped parts, pipe-shaped parts, cracks and the like can be polished, polishing is free of dead angles, the ground workpieces are never deformed, the surfaces are never damaged, and the precision is never affected; customization time is short, processing speed is high, and operation is easy and convenient; variable frequency adjustment is achieved, various polishing requirements are met, and voltage, current, frequency and time can be monitored.

Description

technical field [0001] The invention relates to the technical field of mechanical ultra-precision machining, in particular to an ultra-precision machining process for an aluminum alloy die-casting gearbox valve sleeve. Background technique [0002] The valve sleeve and valve core in the automobile gearbox are ultra-high-precision parts. During machining, there will be fine burrs that cannot be recognized by the naked eye, which will cause the valve sleeve and valve core of the transmission to be stuck and unable to work normally, and bring troubles to the driving of the car. potential safety hazards; existing deburring processes, such as silicon carbide brushes, high-pressure oil flushing, and mud flow, cannot completely remove burrs. The surface roughness of parts, low efficiency and high working intensity; high-pressure oil flushing and grinding mud flow process are difficult and not conducive to environmental protection requirements. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

[0002] The valve sleeve and valve core in the automobile gearbox are ultra-high-precision parts. During machining, there will be fine burrs that cannot be recognized by the naked eye, which will cause the valve sleeve and valve core of the transmission to be stuck and unable to work normally, and bring troubles to the driving of the car. potential safety hazards; existing deburring processes, such as silicon carbide brushes, high-pressure oil flushing, and mud flow, cannot completely remove burrs. The surface roughness of parts, low efficiency and high working intensity; high-pressure oil flushing and grinding mud flow process are difficult and not conducive to environmental protection requirements

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