EP 0872307 A1 19981021 - Lathe apparatus and method
Title (en)
Lathe apparatus and method
Title (de)
Drehmaschine und Verfahren
Title (fr)
Dispositif de tournage et procédé
Publication
Application
Priority
US 83740797 A 19970417
Abstract (en)
In one form, the disclosure describes a lathe apparatus and method for manufacturing a product with a non-axisymmetric shape from a workpiece, such as a toric contact lens, comprises a spindle for rotating the workpiece about an axis of rotation, a cutting tool, a two-axis bed for supporting the cutting tool and for moving the cutting tool along a predetermined path adjacent the workpiece as the spindle rotates the workpiece, and a mechanism for oscillating the cutting tool along an oscillating axis as the two-axis bed moves the cutting tool along the predetermined path, wherein the oscillation axis is oriented at a non-zero angle with respect to the axis of rotation. Preferably, the non-zero angle is about 45 DEG . In a second form, a lathe apparatus comprises a rotary bed for arcuately moving a cutting tool adjacent a workpiece and a mechanism for translationally reciprocating the cutting tool as the cutting tool is arcuately moved adjacent the workpiece. <IMAGE>
IPC 1-7
IPC 8 full level
B23B 5/36 (2006.01); B24B 13/00 (2006.01); B24B 13/04 (2006.01); B24B 13/06 (2006.01)
CPC (source: EP)
B24B 13/0025 (2013.01); B24B 13/04 (2013.01); B24B 13/06 (2013.01)
Citation (search report)
[A] EP 0439425 A1 19910731 - CIBA GEIGY AG [CH]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0872307 A1 19981021; EP 0872307 B1 20020102; AT E211422 T1 20020115; DE 69803327 D1 20020228; DE 69803327 T2 20020919; DK 0872307 T3 20020402; ES 2170977 T3 20020816; JP 4322324 B2 20090826; JP H10296502 A 19981110
DOCDB simple family (application)
EP 98106802 A 19980415; AT 98106802 T 19980415; DE 69803327 T 19980415; DK 98106802 T 19980415; ES 98106802 T 19980415; JP 10225798 A 19980414