Heat sink manufacturing method

A method for manufacturing a heat sink for processing a target object using a skiving cutter, the method comprising:

• determining, based on information about an angle formed by the skiving cutter and a processing surface of the target object, at least one cutting line along one direction from one side point of the processing surface;
• individually deriving, based on material properties of the target object and a shape of the heat sink to be manufactured, fin-specific forward and backward movement lengths of the skiving cutter according to a separation distance of the at least one cutting line from the one side point;
• and
• separating, based on the fin-specific forward and backward movement lengths, at least one auxiliary fin and at least one main fin from the target object by sequentially moving the skiving cutter forward and backward along the at least one cutting line,
• wherein the at least one auxiliary fin is formed by processing the at least one main fin such that the at least one min main fin stands upright with respect to a base plate on which the target object is stacked, so as to manufacture the heat sink formed with the at least one main fin and the at least one auxiliary fin branching upward from the at least one main fin,
• wherein the deriving includes:
• extracting predetermined fin separation ratio information according to the material properties of the target object;
• extracting target length information about at least two auxiliary fins such that the heat sink has a tree fin shape;
• selecting target length information about the at least one main fin based on the target length information about the at least two auxiliary fins;
• calculating a forward and backward movement length for an auxiliary fin by multiplying the fin separation-ratio information by the target length information about the at least two auxiliary fins, and calculating a forward and backward movement length of the at least one main fin by multiplying the fin separation ratio information by the target length information about the at least one main fin;
• and
• matching the forward and backward movement length for the at least one main fin with a cutting line which is maximally spaced apart from one side point (P1) among the at least one cutting line, and matching the forward and backward movement length for the auxiliary fin with a remaining cutting line in inverse proportional to the separation distance.