Lens cutting and bevel edging machine

Claim 2

Apparatus for positioning a lens blank having a known curvature relative to forming means for providing said blank with a certain outline configuration while forming the edge thereof to have a cross section of predetermined geometrical shape including in combination, a lens blank support, means including a shaft mounting said support in operative relationship to said forming means, means mounting said shaft for rotary movement around its longitudinal axis and for rectilinear movement with respect to said mounting means in the direction of said axis, means supporting said shaft mounting means for rectilinear movement in a direction generally perpendicular to said axis, means for rotating said shaft, means responsive to rotation of said shaft for positioning said supporting means in said perpendicular direction, and means responsive to movement of said supporting means for positioning said shaft in said axial direction.

Claim 3

Apparatus as in claim 1 in which said means responsive to said shaft rotation comprises interengageable cam and follower means, said cam having the shape of the lens to be formed from said blank.

Claim 4

Apparatus as in claim 2 including means for biasing said cam and follower means into engagement.

Claim 5

Apparatus as in claim 2 in which said means responsive to movement of said supporting means comprises a cam surface having a curvature corresponding to that of said blank and a follower on said shaft for engaging said cam surface.

Claim 6

Apparatus as in claim 2 in which said means responsive to movement of said supporting means comprises first cam and follower means on said shaft and said carrying means for controlling the axial movement of said shaft and said means responsive to rotation of said shaft comprises second cam and follower means on said supporting means and on said shaft supporting means for controlling the transverse movement of said support.

Claim 7

Apparatus as in claim 5 in which said first cam has a spherical surface centered at the axis of said shaft and in which said second cam has an outlined configuration in the shape of the lens to be formed.

Claim 8

Apparatus for shaping a lens blank having a predetermined curvature to a certain outline configuration while forming the edge thereof to a vee cross section with the apex of the vee at the center of the lens edge and in the horizontal plane of the lens including in combination, a support, a tool having a working surface adapted to form a vee on the edge of a lens blank in response to rotation of said tool around its axis, a carrIage, means mounting said carriage on said support for rectilinear movement in a direction generally transverse to said tool axis, a shaft, means mounting said shaft on said support for rotary movement around an axis generally parallel to said tool axis and for rectilinear movement in the direction of said shaft axis, means for supporting a lens blank on said shaft to permit the edge thereof to engage the working surface of said tool, first cam and follower means on said shaft and on said support for controlling the movement of said carriage transversely of said shaft axis and second cam and follower means on said shaft and on said support for controlling the movement of said shaft in the direction of said shaft axis.

Claim 9

Apparatus for shaping a lens blank having a predetermined curvature to a certain outline configuration while forming the edge thereof to a vee cross section with the apex of the vee at the center of the lens edge and in the horizontal plane of the lens including in combination, a support, a tool having a working surface adapted to form a vee on the edge of a lens blank in response to rotation of said tool around its axis, a carrIage, means mounting said carriage on said support for rectilinear movement in a direction generally transverse to said tool axis, a shaft, means mounting said shaft on said support for rotary movement around an axis generally parallel to said tool axis and for rectilinear movement in the direction of said shaft axis, means for supporting a lens blank on said shaft to permit the edge thereof to engage the working surface of said tool, first cam and follower means on said shaft and on said support for controlling the movement of said carriage transversely of said shaft axis and second cam and follower means on said shaft and on said support for controlling the movement of said shaft in the direction of said shaft axis.

Claim 10

Apparatus as in claim 7 in which said first cam means comprises a first cam carried by said shaft, said first cam having the outline configuration of the lens to be formed, and a follower carried by said support.

Claim 11

Apparatus as in claim 8 including means for adjustably positioning said first cam on the support.

Claim 12

Apparatus as in claim 7 in which said second cam and follower means comprises a second cam on said support, said second cam having a curvature corresponding to that of the blank and centered at the axis of rotation of the cutter.

Claim 13

Apparatus as in claim 7 in which said first cam means comprises a first cam having the outline configuration of the lens to be cut, means mounting said first cam on said shaft for rotation therewith and a stationary follower carried by said support, and in which said second cam and follower means comprises a second cam carried by said support, said second cam having a curvature corresponding to that of said blank and centered on the axis of rotation of said cutter, and a follower on said shaft.

Claim 14

Apparatus as in claim 11 including means for biasing said carriage to move in a direction to bring said first cam and follower into engagement.