Milling system and method under different lubrication conditions

A method for operating a milling system that comprises a lubrication system, a tool storage, a tool change system, a cutting system, and a force measuring system, wherein:

• the lubrication system provides lubricating oil to the cutting system, the lubrication system having a power source in the form of high-pressure gas, an input frequency and a volume of the high-pressure gas can be controlled through a frequency generator and a gas volume control knob, a quantity of the lubricating oil in a lubrication pump can be adjusted accordingly, then the lubricating oil can be provided to the cutting system through a nozzle interface in connection with an outlet interface of the lubrication pump;
• the tool storage comprises a storage magazine on which a plurality of cutter assemblies are circumferentially distributed, each cutter assembly of the plurality of cutter assemblies comprising a respective mandrel and a respective cutter which is connected at a first end of the associated mandrel, and helical angles of the cutters of multiple ones of the plurality of cutter assemblies are not identical, the cutter which is matched with an operating condition can be faced to the tool change system through the rotation of the storage magazine;
• the tool change system comprises two mechanical arms facing opposite directions, and a rotating shaft is provided at the middle of the two mechanical arms, the positions of the two mechanical arms can be switched by controlling the rotation of the rotating shaft, and thus the cutter assembly change between the cutting system and the tool storage is realized through switching of the positions of the two mechanism arms;
• the cutting system comprises a spindle having arranged thereon a given cutter assembly of the plurality of cutter assemblies, and rotation of the given cuter assembly arranged on the spindle is driven by controlling rotation of the associated mandrel to which the cutter arranged on the associated mandrel is connected, wherein cutting is achieved through rotation of the cutter;
• the force measuring system is arranged at a first end of the cutting system, and is used to measure a cutting force received by a workpiece fixed thereon, so a cutter with non-identical helical angles can be chosen for milling according to the machining parameters;
• and
• the lubrication system further comprises an inlet interface, a gas source processor, the lubrication pump, a nozzle and connection pipelines, and controlling valves arranged at various ones of the connection pipelines, the inlet interface is fixed on the gas source processor, the high-pressure gas entering through the inlet interface is filtered by the gas source processor and then provided to the lubrication system, an electromagnetic valve is fixed on the gas source processor through a two-way joint to control the entrance of the high-pressure gas, a three-way valve is connected with an outlet of the electromagnetic valve, the high-pressure gas enters the frequency generator through an outlet pipeline of the three-way valve, and the input frequency of the high-pressure gas can be controlled by the frequency generator, the high-pressure gas coming out of the frequency generator enters the lubrication pump through the connection pipelines, then the lubricating oil can be provided to the cutting system through the nozzle interface in connection with the outlet interface of lubrication pump,
• wherein the method for operating the milling system comprises choosing, among the plurality of cutter assemblies, a specific cutter assembly of which the non-identical helical angles of the cutter exhibit an angle difference that suits to a specific condition of multiple different conditions including dry cutting, casting-type lubrication, minimal quantities of lubrication or minimal quantities of nanofluid lubrication, and/or choosing, among the plurality of cutter assemblies, a specific cutter assembly of which the cutter is optimal for a specific cutting parameter of multiple different cutting parameters, in order to obtain a minimum cutting force applied to a workpiece by the cutter of the specific cutter assembly chosen among the plurality of cutter assemblies.