Machining method for bottom plate oil way of oil pressure clamp

The invention relates to a method for machining a bottom plate oil way of an oil pressure clamp, which is characterized in that oil guide grooves are respectively formed in the upper surface of a bottom-layer steel plate, the upper and lower surfaces of a middle-layer steel plate and the lower surface of a top-layer steel plate, and the upper and lower-layer steel plates are mutually diffused, welded and integrally formed, so that the oil guide grooves in each layer are combined to form a multi-layer oil way, and the machining difficulty is low; the requirement for the steel quality of a steel plate is not high, common steel can be used, the drilling position does not need to be plugged in the later period, oil leakage caused by plugging in the later period does not need to be considered, the oil way is machined on the plane and can be machined into a bent curve according to the requirement, and the shape of the oil way can be flexibly designed according to the flow requirement; the cross section of the oil d