The invention discloses a 3D-printing-based
machining method of a three-dimensional micro-fluidic
chip. The
machining method comprises the following steps: (1) drawing a three-dimensional micro-runner figure; (2) layering three-dimensional runners in the three-dimensional micro-runner figure, and carrying out layer-by-layer
slicing on the three-dimensional runners along the bottom surface direction parallel to a
chip; (3) pouring a liquid-state
chip material on a micro-runner
solid structure at a previous layer, sequentially printing the micro-runner
solid structure and pouring the chip material on each layer according to layering and
slicing sequences of the runners, and sequentially finishing the shape printing of the runners, so as to obtain a three-dimensional runner
solid structure; (4) dissolving the three-dimensional runner
solid structure, so as to obtain the three-dimensional micro-fluidic chip. The invention further discloses a printing device for implementing the method. The 3D-printing-based
machining method has the advantages that a
machining process is simple, convenient and rapid, the production efficiency is high, the industrial
mass production is easily realized, the obtained three-dimensional micro-fluidic chip does not need to be subjected to post-
processing processes such as bonding, a packaging process is simplified, a three-dimensional micro-runner with a complex structure can be manufactured, and the shape and precision of the runner are controllable.