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7082671 |
Magnetic disc apparatus production method
A recording/reproduction element is mounted on a magnetic head slider via a piezoelectric element so that a displacement of the piezoelectric element performs fine control of the position of the...
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7082669 |
Method of manufacturing a substrate of a rotary encoder
A two-phase rotary encoder is provided which includes a substrate for the encoder which is double-faced and has a copper-foil-bonded substrate etched thereon, a first ring-shaped electrode pattern...
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7047625 |
Planarizing process
Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC...
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7007374 |
Method of making a magnetic head
A narrow track width read sensor having a high magnetoresistive sensitivity is made using a self-aligned process which requires the use of only a single resist mask. A plurality of sensor layers is...
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6988308 |
Method of initializing hard bias of a magnetic read head
Hard biasing of a magnetoresistive sensor or a spin valve sensor in a magnetic read head is initialized by repeatedly applying a magnetic field to the hard biasing at any level of fabrication of...
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6716084 |
Carrier head for holding a wafer and allowing processing on a front face thereof to occur
The present invention uses some type of inflatable membrane during processing to establish a vacuum and/or provide a resilient cushion on which the backside of the wafer can rest. In one aspect,...
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6497798 |
Controllably monitoring and reducing a material
The instant invention provides a vibration insensitive method of precisely polishing an object. The method includes the steps of providing an object to be polished, applying a conductive material...
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6482072 |
Method and apparatus for providing and controlling delivery of a web of polishing material
Generally, a method and apparatus for supporting a web of polishing material. In one embodiment, the apparatus includes a platen adapted to support the web, a frame assembly, and one or more...
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6346029 |
Bow compensated lapping
A method and apparatus for controlling the amount of row distortion before and dynamically during the lapping process used to manufacture sliders for magnetic storage devices. A wafer quadrant of...
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6244927 |
Multi-functional sensing methods and apparatus therefor
A method and apparatus for sensing a pierce-through condition of a material made by a piercing force in which a shield surrounding a source of the piercing force is supplied with a gas supply to...
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6199956 |
Round-shank bit for a coal cutting machine
A round-shank bit for a coal cutting machine or the like, having a bit head and a bit shank, wherein the bit head has a bit tip, maintained by a base element in a receptacle of the bit head....
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5898984 |
Cylinder member holder, machining apparatus having said holder, and machining method using same
A cylinder member holder is used to subject the outer circumferential surface of a cylinder member to cutting machining by non-rotatably supporting left and right ends of a tubular cylinder member...
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5146670 |
Profiling and deburring of workpieces
The invention is directed to a device and method for profiling and deburring a workpiece. The device includes a profiler having a cutting edge for profiling a workpiece, a deburrer having a cutting...
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4905417 |
Numerical control grinding machine
In a numerical control grinding machine using a grinding wheel made of cubic boron nitride, a computerized numerical controller controls the infeed movement of a wheel head to effect a rough...
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4810945 |
Numerical control feed device for machine tool
In a numerical control feed device, an objective velocity signal is produced from the difference between command pulses from a numerical controller, which indicative of an objective feed amount and...
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4615149 |
Feed control apparatus for grinding machine
A feed control apparatus for a numerically controlled grinding machine having a work table movable in a first axis direction, a wheel head provided thereon with a grinding wheel of the angular type...
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4607460 |
Grinding machine with a reciprocable column for work supporting devices
A numerically controlled profile grinding machine has a bed for a first carriage which supports an upright column and is reciprocable along a first horizontal path. The column supports a second...
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4458452 |
Control for grinding machine
A control for a grinding machine of the type having a grinding wheel mounted at an oblique angle relative to a workpiece, the control including means for receiving first data representative of a...
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4375738 |
Method for grinding glass plate and the like by numerical control and grinding machine therefor
A grinding machine having a table provided with a plurality of fixing stands in tandem for fixing glass plates and a head stand carrying working heads equipped with working wheels rotatably in the...
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4367389 |
EDM System with abrasive finisher
An electrical discharge machining (EDM) apparatus is rendered capable of finishing machined workpiece surfaces by mounting an abrasive tool assembly on an electrode tool head juxtaposed with the...
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4299061 |
Cam machine with acceleration control
The invention provides apparatus and a method for use in machining cam profiles, and is suitable for use in grinding, milling, turning or otherwise forming cams. A workpiece, i.e. a cam blank, is...
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4294047 |
Method of sharpening lateral edges and end edges of a blade during reciprocation thereof
The leading and lower cutting edges of a reciprocating cutting blade on a sheet material cutting apparatus are sharpened by elevating the blade from a cutting region proximate the sheet material...
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4228617 |
Method for grinding glass plates and the like through numerical control and beveling machine therefor
A beveling machine having a table provided with a plurality of fixing stands in tandem for fixing glass plates and a head stand carrying working heads equipped with working wheels rotatably in the...
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4186529 |
Programmably controlled method for grinding end cutting tools and the like
Disclosed is a numerically controlled method of broad application but particularly useful for grinding cutting edges and clearance surfaces on cutting tools such as end mills and other similar...
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4148159 |
Grinding machine
A grinding machine in which the grinding cycle is controlled by a stepping motor which receives pulses from a linear feed-controlled generator and which is operative to give an adjustable diamond...
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4115956 |
Programmably controlled machine for grinding end cutting tools and the like
Disclosed is a numerically controlled machine and method of broad application but particularly useful for grinding cutting edges and clearance surfaces on cutting tools such as end mills and other...
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4085551 |
Grinding machines
A form grinding machine in which the grinding wheel is fed into a workpiece by a hydraulic creep feed control circuit. The workpiece is rotated at a very slow speed while being ground completely...
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4068414 |
Automatic flute grinding machine
An automatic grinding machine adapted to cut and relieve spiral drill flutes and perform analogous form-relieving operations requiring helical advance of the work, wherein a linearly-moving...
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RE28766 |
Apparatus for milling cams and the like, as for swiss-type screw machine cams
The invention is directed to a novel apparatus for milling Swiss-type screw machine cams. The invention provides a highly simplified and economical numerically controlled system enabling Swiss-type...
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3942287 |
Contour grinders
A contour grinder having a grinding wheel that forms a workpiece into a desired contour by directly controlling the movement of the grinding wheel with a motor operated by numerical control. The...
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3931561 |
Curve milling or curve grinding machines
A milling or grinding machine for shaping a workpiece is disclosed wherein a shaping tool is displaced relative to a rotatable workpiece in accordance with coded displacement values of a series of...
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3878652 |
Low cost programmable remote control machine tool manipulator having continuous path control
A low cost, programmable, automatically operating remote control machine tool manipulator is provided having continuous path control about one, two or three axes of movement. The manipulator...
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3746956 |
TAPE-READING CONTROL SYSTEM FOR REPEAT-PROCESSING CYCLES OF TRAVERSE CUTTING
In a control system for grinding machines, the grinding operation is performed in a plurality of processing cycles, each of which is controlled according to command data stored in blocks on a tape....
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3742653 |
CONTROL DEVICES FOR THE RADIAL DISPLACEMENT OF SHAFTS
In a control device for the radial displacement of a shaft supported in a fluid bearing, the bearing including a plurality of circumferentially spaced apart pressure pockets surrounding the shaft...
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3701220 |
ELECTRIC FEED FOR MACHINE ELEMENT
For a movably mounted element of a machine, an automatic feed, electrically energized and driven, including an electric pulse motor connected to produce sequential equal incremental movements of...
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3664066 |
METHOD AND APPARATUS FOR ALIGNING WORKPIECES
Disclosed here are methods and automatic apparatus for grinding cylindrical workpieces, such as the contoured rolls used in metal rolling mills. The methods and apparatus involve (1) automatic...
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3660948 |
METHOD AND APPARATUS FOR FINDING THE LENGTHWISE CENTER OF A WORKPIECE
Disclosed here are methods and automatic apparatus for grinding cylindrical workpieces, such as the contoured rolls used in metal rolling mills. The methods and apparatus involve (1) automatic...
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3660947 |
METHOD AND APPARATUS FOR TURNING WORKPIECES
Disclosed here are methods and automatic apparatus for grinding cylindrical workpieces, such as the contoured rolls used in metal rolling mills. The methods and apparatus involve (1) automatic...
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3653161 |
METHOD AND APPARATUS FOR TURNING WORKPIECES AND UTILIZING PROGRAMMED DATA
Disclosed here are methods and automatic apparatus for grinding cylindrical workpieces, such as the contoured rolls used in metal rolling mills. The methods and apparatus involve (1) automatic...
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3653854 |
DIGITALLY CONTROLLED GRINDING MACHINES
In a digitally controlled grinding machine for working a workpiece including at least one cylindrical portion and at least one tapered portion, there are provided a first grinding wheel supported...
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3641714 |
MACHINE TOOL PROVIDED WITH APPARATUS FOR COMPENSATING THE WEAR OF GRINDING WHEEL
A grinding machine is provided with first feeding means for moving a wheel slide toward and away from a workpiece, a dressing tool arranged to be moved transversely of the face of the grinding...
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3640030 |
METHOD FOR GRINDING TOOTHED FACED MEMBERS
The present invention comprises provision for automatic, tape-controlled, precision operation of a machine for grinding toothed face members, such as couplings and clutches, and of large size,...
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3622287 |
NUMERICALLY CONTROLLED GRINDING MACHINE WITH A SIZING DEVICE
A grinding machine is provided with a sizing device for providing a sizing signal which controls a hydraulic actuator to feed a wheel slide. A sizing point of the sizing signal is shifted to be...
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3603044 |
GAUGE MECHANISM FOR GRINDING MACHINES
This disclosure relates to automatic machines for grinding workpieces having axially spaced portions of different diameters, and particularly relates to a gauge mechanism which is used to determine...
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3589078 |
SURFACE GENERATING APPARATUS
An apparatus for producing relative movement between a work surface and a surface modifying mechanism in two independently controllable component directions. An energizing circuit generates a...
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3581445 |
FEED RATE AND WORK SPEED CONTROL FOR GRINDERS
This disclosure relates to a grinder for grinding workpieces having two or more different diameters and having means for presetting the controls of the grinder to grind such different diameters. In...
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3627490 |
GRINDING MACHINE WITH AUTOMATIC WHEEL EXCHANGE DEVICE
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3566544 |
OPTICAL SURFACE GENERATING METHOD AND APPARATUS
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3564776 |
OPTICAL SURFACE GENERATING METHOD AND APPARATUS
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3430400 |
METHOD OF ALIGNING MILL ROLLS FOR GRINDING THEREOF
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