Method for designing a drill for composite head with improved dust suction performance and the drill for composite head designed thereby and the composite head using the drill

摘要

The present invention relates to a method for designing a drill part for a composite head with improved dust suction performance, a drill part for a composite head designed thereby, and a composite head including the same. In the method of designing a drill part for a composite head with improved dust suction performance of the present invention, a drill part and a water jet having a drill housing are installed in the composite head, respectively, and the drill housing has an upper housing having a discharge pipe formed on one side and a lower part of the upper housing A method for designing a drill part for a compound head including a housing connector formed in the , a lower housing formed under the housing connector, and a connector formed between the upper housing and the discharge pipe, an objective function in consideration of the shape of the drill part and a design variable determination step; a design region selection step of determining upper and lower limits of the design variables; combining design variables in the selected design area; determining a major design variable having a major influence on the objective function by a 2k factorial experiment method among the combined design variables; Numerical analysis in the selected design area and searching for an optimal point in the design area through the numerical analysis result.