Assistance support machining method

The invention provides a power-assisted bracket processing method which comprises the following steps: injecting a molten metal material into a mold, and demolding to obtain a precision casting after the metal is cooled; a first clamp, a second clamp and a third clamp are manufactured respectively; the first clamp is used for clamping and positioning the power-assisted support, then the first clamp where the power-assisted support is clamped is installed on a machine tool, and the machine tool is started to machine the main frame body; afterwards, the first clamp is detached, the power-assisted support is clamped and positioned on the second clamp, the second clamp where the power-assisted support is clamped is installed on a machine tool, and installation holes are machined in the ends of the branch support bodies; and then the second clamp is detached, the power-assisted support is taken down and clamped and positioned on the third clamp, then the third clamp where the power-assisted support is clamped is i