Abstract: A drilling aid system which comprises a body with a first cavity, a shaft mounted to be able to rotate within the first cavity, a slider which has a proximal end mounted to be able to move in translation within the first cavity, where the slider has a second cavity which extends the first cavity, a collar that is able to move in translation on the shaft, a first compression spring having a first stiffness and pressing against the collar and against the proximal end of the slider, and a second compression spring having a second stiffness greater than the first stiffness, and pressing against the collar and against the proximal end of the body. A system of this kind makes it possible to make the user perceive that the end of the drilling operation is nigh and that therefore the force applied to the drill should be reduced.

Abstract: A method for assembling two components and method for assembling two portions of an aircraft. A method for assembling first and second components includes, prior to the setting in place of temporary linking elements in the first and second starter holes, producing the first starter holes in the first component, depositing a sealing mastic on at least one of the first and second contact faces of the first and second components, placing the first and second components against one another, and producing second starter holes in the second component using a drilling tool connected to a suction system and equipped with a drill bush including a first part that has an outside diameter less than or equal to that of the first starter holes and a first end bearing against the second contact face of the second component upon production of the second starter holes.

Abstract: A drilling aid system which comprises a body with a first cavity, a shaft mounted to be able to rotate within the first cavity, a slider which has a proximal end mounted to be able to move in translation within the first cavity, where the slider has a second cavity which extends the first cavity, a collar that is able to move in translation on the shaft, a first compression spring having a first stiffness and pressing against the collar and against the proximal end of the slider, and a second compression spring having a second stiffness greater than the first stiffness, and pressing against the collar and against the proximal end of the body. A system of this kind makes it possible to make the user perceive that the end of the drilling operation is nigh and that therefore the force applied to the drill should be reduced.