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.