Patent ID: 7334313

Claim:
Numeric control bore for boring an eyeglass lens ( 5 ) comprising: a support bedplate ( 1 ), attachment means ( 3 ) of said lens ( 5 ) in a first position, rotation means ( 9 ) of said lens ( 5 ) according to a first rotation axis ( 7 ) perpendicular to the plane of the lens defined by said lens ( 5 ), defining a first degree of freedom, a support column ( 11 ) with a machining head ( 15 ), said attachment means ( 3 ) and said support column ( 11 ) are capable of being moved one with respect to the other according a direction comprised in said plane of the lens, defining a second degree of freedom, said support column ( 11 ) has a first end linked to said bedplate capable of rotating about a second rotation axis ( 13 ) parallel to said plane of the lens, defining a third degree of freedom, said apparatus only having four degrees of freedom in order to fix the relative position between said head ( 15 ) and said lens ( 5 ).