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8166622 |
Machine for machining optical workpieces, in particular plastic spectacle lenses
A machine for machining workpieces, for example plastic spectacle lenses, has a workpiece spindle which rotates the workpiece about a workpiece rotation axis, and a fast tool arrangement which...
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6776563 |
Method of controlling elliptical vibrator
An elliptical vibratory cutting apparatus includes a control mechanism which applies a sinusoidal voltage having a predetermined phase difference to piezoelectric elements. Flexure vibrations are...
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6579047 |
Guide and support device for small machine tools, in particular for rotating-mass balancing machines
It is provided a support and guide device for small machine tools, in particular for rotating-mass balancing machines, comprising: a base element (2), at least one moving element (3) in engagement...
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6237452 |
Precision high speed turning machine
A precision high speed turning machine apparatus is provided which performs a selected operation, such as shaping, polishing or probing/measuring on a workpiece and in particular on a rotationally...
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6105476 |
Adjustable alignment
A toolholder apparatus includes a head, a cutting tool mounting fixture attached to the head for holding the cutting tool, and a floating roller assembly pivotally mounted relative to the head....
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5868051 |
Method and apparatus for machining with a pivoting cutting tool
A method and apparatus has been developed for metal cutting machine using a cutting die tool that pivots as it cuts a metal workpiece. By pivoting the cutting tool, the orientation of the metal...
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5862726 |
Method for the manufacture of a three-mirror optical system
The fabrication of an off axis three-mirror telescope on only two substrates allowing two of mirrors to be formed on a common substrate, such as by means of diamond turning. The common substrate...
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5842395 |
Lathe for producing an aspherical surface on an optical lens blank
A lathe for producing an aspherical surface on an optical lens blank has a horizontal base, and a spindle is arranged for disposition in a preselected adjusted position on the base to rotatably...
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5718154 |
Reciprocating tool holder assembly
A reciprocating tool post assembly is disclosed that may provide substantially linear excursions of a cutting tool mounted therein. The apparatus includes a voice coil assembly having a...
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5566597 |
Method of producing a torus surface on a lathe work
To prepare an essentially toroidal surface (7) on a workpiece (1) by machining, rotation of the workpiece around a first axis of rotation (3) and at the same time a rotation of the cutting tool (8)...
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5417130 |
Process and device for machining and workpieces to shape
A process and device for machining a workpiece supported within a workpiece holder and having a tool which has a machining zone for machining the workpiece and supported within a tool holder. The...
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5195407 |
Apparatus for making an aspherical lens and a method of making an aspherical lens
An apparatus and method for forming aspherical lenses is provided in which a holder holds and rotates a predetermined lens workpiece, with a rotation detecting device provided for detecting the...
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5105692 |
Positioning device having static fluid bearings
A machine tool comprising a third carriage which is guided along a circular cylindrical guide of a second carriage by means of a static fluid bearing and which can thus rotate about an axis of...
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5085013 |
Contact lens orientation method and apparatus
An improved method of making contact lenses that involves using an improved arbor for holding the lens. The arbor assembly includes the use of a surrounding ring having a diametrical slot that...
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5074346 |
Tire grooving apparatus
A tire grooving apparatus according to the present invention consists of a movable carriage (3) adapted to be moved at least in the direction parallel with a tire support shaft (21), a vertically...
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5024527 |
Method and apparatus for remote position sensing using edge diffraction
Contact lenses can be made by machining an inner concave surface into a plastics material blank, then mounting the blank in a lathe and machining the outer convex surface thereon. Repeated...
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4995300 |
Lathe for generating aspherical surfaces on work pieces
A lathe is provided for generating surfaces on work pieces and which includes a spindle for support of a work piece while it is revolved and against which a cutting tool is caused to traverse. A...
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4964321 |
Ball turner for turning lathes
An auxiliary shaft (16) mounted coaxially with a main shaft (5) has at the top an eccentric (17) operatively connected via grooving (20, 21) to a tool-fastening plate (13). At the bottom of the...
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4947715 |
Method and apparatus for cutting an aspheric surface on a workpiece
A lathe and a method of using the lathe are disclosed for forming an aspheric surface on a workpiece, in which the workpiece is mounted to a holder that is rotatably carried by the spindle,...
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4901480 |
Lens generating tool for generating a lens
A tool for generating a prescription surface in a plastic eyeglass lens. A pair of replaceable, cutting elements are mounted on a tool having a spindle. Each cutting element has a solid...
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4852436 |
Cam-controlled turning machine
Apparatus and method is disclosed for forming an elliptical surface in a mirror 10. The mirror blank is rotated about a given axis and the cutting tool tip 24 is pivoted about an axis C which is...
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4848422 |
Rotary spindle former
In the apparatus a workpiece is rotated in a fixed position about an axis. A template is aligned with and spaced to one side of this axis. A platform is positioned above the workpiece and hinged on...
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4817213 |
Method for forming a torus and a piston made therefrom for use in a rotary actuator
A method of forming a finished torus of precise dimension which can be used to form piston segments for use in a rotary actuator in which a torus workpiece is rigidly mounted on a support in such a...
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4750392 |
Adjustable tool holder
A hollow housing (20) slidingly retains an extendable body (22) through an open end allowing forward and aft movement. A rotatable tool holding head (34) is adjustably connected to the body (22)...
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4680998 |
Toric lenses, method and apparatus for making same
A unique lens (10) having a peripheral carrier surface (13), a central optical zone (18) providing the toricity required to achieve a given spherical and cyclinder correction that is oriented to a...
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4679471 |
Lathe for generating aspherical surfaces
A lathe for cutting an aspherical surface on a workpiece, such as a contact lens blank, comprises a headstock mounted for linear reciprocating movement relative to a radius cartridge having a tool...
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4647261 |
Cutting device and method for the precision trimming of the edge of a cast lens
A cutting device and method for the precision trimming of a selected portion of the peripheral edge of a cast lens secured on the external surface of a male mold independent of any eccentricity...
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4631994 |
Adjustable holder for a cutting tool
A linearly and angularly adjustable holder for a cutting tool having primary and secondary cutting edges includes a basic element, a receptacle element for the cutting tool rotatably mounted on the...
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4625377 |
Method for manufacturing universal joints
This invention relates to metal cutting and more particularly to method for manufacturing constant velocity universal joints. A construction is disclosed wherein spherical turning, milling and...
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4624158 |
Lathe for machining balloon-shaped pockets in a workpiece
A lathe for machining a balloon-shaped pocket in a turbine rotor comprising a carriage disposed on ways to move axially along the bed of the lathe, a cross-feed mounted on the carriage, the...
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4592684 |
Method and apparatus for producing aspherical surfaces
A method and apparatus for producing an aspherical surface, for example, an aspherical optical surface, on a workpiece, on which the workpiece is rotated about a first axis, a cutting tool is...
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4588005 |
Duplicator attachment for woodturning lathes
A duplicator attachment for a woodturning lathe which provides the same freedom and control of the cutting action as in normal, freehand, turning operations, and enables duplication of inside...
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4584148 |
Method for the precision trimming of the edge of a centrifugally cast lens
A cutting device and method for the precision trimming of a symmetrical portion of the peripheral edge of a centrifugally cast lens secured within a cavity of a female mold without the need for...
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4497144 |
Method for manufacturing quadric surface
A working tool having a linear working edge is secured to a tool holding arm which is rotatably arranged about a focus shaft extending in parallel with a Z axis and is slidable linearly in parallel...
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4495842 |
Thrust bearing scraping tool
A thrust bearing has a curved surface machined therein by a cutter which is positioned by a cam as the bearing is rotated. The cam causes the cutter to pivot so that a sloped cut is made rather...
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4455901 |
Apparatus for controlling lathed contact lens thickness
A device for controlling the thickness of a contact lens produced on an automatic and computerized numerically controlled (CNC) lathe is disclosed. A sensor control device is incorporated on a lens...
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4375739 |
Method for manufacturing hyperbolic surface
An optical lens having a hyperboloid surface is formed by cutting or grinding a workpiece made of glass or plastics while rotating it about its axis, while a cutting or grinding tool having a...
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4333368 |
Method and apparatus for generating aspherical surfaces of revolution
An aspherical surface generating method and apparatus which optimizes the path of a moving cutting tool tip to fit a given aspherical surface of revolution to be cut on a rotating work piece...
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4313355 |
Method and apparatus for manufacturing plastic lenses
The method of making plastic lenses ready for fitting to the contour of the wearer's eye comprising supporting a blank of plastic at one end for rotation about a predetermined axis, turning the...
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4309925 |
Tool compensation mechanism
A boring bar for machining an internal spherical surface. The bar has a cutting element and a holder therefor both of which rotate bodily with the bar and are simultaneously pivotable in a cutting...
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4274313 |
Apparatus for cutting aspherical surfaces on contact lenses and the like
A tool carriage for a lathe which permits guiding the tool to cut aspherical lense-shaped surfaces with desired shape factors with only pivotal carriage movement and no carriage translation during...
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4264249 |
Toric surface generator
Generating lens surfaces to true toric shapes with lens surfacing machinery employing a cutting tool having a single cutting edge and provision for universal adjustment of its effective cutting...
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4240311 |
Quartz crystal resonator
A quartz crystal resonator adapted to resonate in the thickness shear mode has a wafer with a sculptured recessed portion on at least one surface. The recessed portion can be exceptionally thin...
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4176565 |
Spherical bearing seat cutter machine
The present invention relates to a spherical bearing seat cutter machine for cutting large spherical bearing seats, such as, those used in equipment which is installed in power-generating stations...
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4172398 |
Preset pivotal tool holder
A tool fixture is provided for precise pre-alignment of a radiused edge cutting tool in a tool holder relative to a fixed reference pivot point established on said holder about which the tool...
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4134315 |
Lathe for making contact lenses
A lathe for forming contact lenses in a single cut includes a support member for hingedly mounting the tool holder turret. A lever arm extends from the tool holder turret and perpendicular to the...
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4114486 |
Lathe for generating spherical or aspherical surfaces on workpieces, method for generating aspherical surfaces on workpieces and workpiece having aspherical surface
A lathe for generating spherical surfaces of selected radiis on workpieces in the usual manner but which is provided with curve-selecting adjustable means for generating aspherical surfaces which...
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4084459 |
Method and apparatus for lens turning
Apparatus for and method of forming a surface on, for instance, a contact lens. The apparatus includes first and second movable members. The first member is pivotally connected to suitable support...
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4084458 |
Manufacture of contact lenses
A method of manufacturing a contact lens by machining a lens blank in a suitable machinable condition. The concave lens surface is machined first and the circumferential edge surface is then...
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4083272 |
Omega-X micromachining system
A micromachining tool system with X- and omega-axes is used to machine spherical, aspherical, and irregular surfaces with a maximum contour error of 100 nonometers (nm) and surface waviness of no...
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