Simultaneous turning device for fabrication of eyeglass lenses
AssigneeOptoTech Optikmaschinen GmbH
InventorRoland Mandler
Life of this patent
Estimating the term…
Abstract
A turning device has two turning stations, each with a rotatable work piece spindle to hold a lens blank, each lens blank with a turning tool for the machining of a lens blank. A method for the operation of the turning device, wherein first and the second lens blanks are simultaneously machined with the turning tools is disclosed. Control electronics attune drive signals to each other such that certain drive signals for fast tool servomotors of the turning tools accomplish at least a temporary or phase-wise opposite running of the fast tool servomotors for vibration dampening. A fabrication mechanism is provided for the manufacturing of eyeglass lenses from lens blanks with a milling device and a turning device along with a method for operating the fabrication mechanism.
Claims17
A turning device (50) having:
- a first turning station (51a) with
- a rotatable first work piece spindle (52a) to hold a lens blank (100a, 100b, 100c, 100d, 100e) and
- a first turning tool (53a) for the machining of a lens blank (100a, 100b, 100c, 100d, 100e);
- and further having:
- at least one second turning station (52b) with
- a rotatable second work piece spindle (52b) to hold a second lens blank (100a, 100b, 100c, 100d, 100e) and
- a second turning tool (53b) for the machining of a second lens blank (100a, 100b, 100c, 100d, 100e);
- wherein each turning tool (52a, 53b) has a fast tool servomotor (75a, 75b), by which infeed depth (T) can be changed with respect to a coordinated work piece spindle (52a, 52b).
A fabrication mechanism (1) for the manufacturing of eyeglass lenses from lens blanks (100a, 100b, 100c, 100d, 100e), with a milling device (10) and with a turning device (50), the turning device (50) further comprising:
- a first turning station (51a) with a rotatable first work piece spindle (52a) to hold a lens blank (100a, 100b, 100c, 100d, 100e) and a first turning tool (53a) for the machining of a lens blank (100a, 100b, 100c, 100d, 100e), and
- at least one second turning station (52b) with a rotatable second work piece spindle (52b) to hold a second lens blank (100a, 100b, 100c, 100d, 100e) and a second turning tool (53b) for the machining of a second lens blank (100a, 100b, 100c, 100d, 100e),
- wherein the milling device (10) has at least one milling station (11) with a work piece holder (12) to hold a lens blank (100a, 100b, 100c, 100d, 100e) and a milling tool (13) for machining the lens blank (100a, 100b, 100c, 100d, 100e), and
- wherein a loading device (30) is provided, which is configured to remove lens blanks (100a, 100b, 100c, 100d, 100e) from the milling device (10) and load them into the work piece spindles (52a, 52b).
Dependencies are inferred from the claim text.