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8098038 |
Servomotor control system enabling high-speed oscillating motion to be highly precise
A servomotor control system that includes a numerical control unit and servo control unit enables the use of learning control based on an angle synchronization method in high-speed oscillating...
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7656106 |
Servo controller
There is provided a servo controller for synchronously controlling a master side drive source to drive one drive axis and a slave side drive source to drive the other drive axis. The servo...
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7634955 |
Method of controlling drive of driving motor for rotary indexing device of machine tool
A method of controlling drive of a driving motor for a rotary indexing device is provided. The device includes an indexing mechanism that indexes an angular position of a circular table by rotating...
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7461798 |
Collector ring for a center pivot irrigation machine
A collector ring for use with a center pivot irrigation system which permits the mounting of a communication device above the span structure. The collector ring also includes a monitoring device...
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7183735 |
Drive unit for controlling drives in machine tools or production machines
A drive unit for controlling drives of machine tools or production machines includes a signal electronics unit, a startup/diagnostic unit, and an interface between the signal electronics unit and...
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6759818 |
Electromotive actuator and method for controlling the same
To realize structure simplification and reduction in manufacturing cost without lowering power transmission efficiency and reliability. The present invention includes a first motor 5 and a second...
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6404151 |
Electric vehicle drive
An electric vehicle drive has an electric machine which can be alternatively driven as a motor or as a generator and has a d.c. connection to which a supply voltage can be applied, from a first...
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6342768 |
Displacement apparatus arranged for guiding a carrying device along at least two rails
A displacement apparatus comprising a first rail and a second rail, extending substantially parallel thereto, while on the first rail a first driving gear with a first motor is provided and on the...
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6320346 |
DCC decoder for model railroad
An apparatus for controlling a model railroad locomotive includes a Digital Command Control (DCC) decoder and a power switch. The power switch selectively connects the railroad locomotive's motor...
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6313591 |
Delay time modeling filter for cascaded regulator structure
A control system controls the movement of an object based on desired position data. The control system includes a first regulator configured to regulate the position of the object, a feed forward...
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6259222 |
Device and method for regulating maximum loading on an electric motor in an aggregate feed replenishing system
A device for controlling load on a first motor whose load is affected by a second motor, comprises a controller having a first input for being connected to a horsepower transducer connected to the...
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6218793 |
Plate glass snapping machine
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6191543 |
Integrated circuit for multiple-axis position control
The present invention is an integral-type IC for multiple-axis position control to provide highly integrated and modular design for the positioning control of automatic system. The inventive IC...
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6034491 |
Universal fixture having shared drive assembly
The present invention relates to an automatically reconfigurable contour checking fixture for comparing a component to a programmed contour. The fixture comprises a horizontal support table, having...
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5952797 |
Model vehicle, particularly model railway vehicle
A model vehicle such as a model railway vehicle includes a control and evaluation device located in the model vehicle, and a plurality of drive devices such as electric motors for moving the...
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5735646 |
Interruptible feed rate drilling system
In a system which interrupts the infeed signal generated by a CNC machine drive signals are applied to at least an RPM Control Electronics Module to drive the rotation of a cutting tool and the...
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5491391 |
Start up circuit for continuous sine-wave commutated brushless motors
Automatic start up of a continuous sine-wave commutated, brushless, direct current motor in a predetermined direction is done by applying a ramped armature current to the direct current motor to...
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5373495 |
Disk playback apparatus
A disk playback apparatus designed such that the linear velocity of the disk is stabilized during a short period corresponding to one to several revolutions of the disk and occurrence therein of...
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5237251 |
Control unit for a machine with a tapping function
A control unit enables tapping onto an end surface of a workpiece while rotating the workpiece. A workpiece rotational speed command (Vc) is applied from an NC unit (90) to first and second speed...
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5196769 |
Motor control device
The present invention relates to a motor control device using an inverter or inverters, in particular, it relates to a motor control device suitable for the prevention of inertial rotation of a...
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5184053 |
Control device for a tool driving unit
A control device for a tool driving unit is disclosed wherein a tool such as a tap or a drill is controlled to be rotated and axially moved by the control device. The tool driving unit has a...
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5165828 |
Cam-actuated thread tapper
An electronic thread tapper includes a cam-operated feed mechanism which drives the tap carriage rigidly in the advance direction only. Separate force means are employed to move the carriage in the...
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5087157 |
Electromagnetic base drill with intermittent feed
The states of contact switches are switched when a mode switch is turned on. If the drilling operation is effected by means of a drill motor in this state, an oscillation signal which is repeatedly...
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5083074 |
Method for error correction in synchronized superposed operation of servomotors
In a method for performing a synchronized superposed operation of two servomotors, controllers for the servomotors perform the control for achieving the synchronized superposed operation by:...
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5019763 |
Learning control method in numerical control machine tool
For controlling the rotation angle of a main shaft of a numerical control machine tool in synchronization with the position of a feed shaft, the learning control method according to the present...
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5010286 |
Method of synchronous control of spindle motor and feed motor
When a spindle (10) of a machine tool is rotated and moved relative to a workpiece linearly along an axis (Z) thereof during a machining process such as screw cutting, a spindle servomotor (12) and...
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4983899 |
Numerical control apparatus for controlling a feed shaft and main shaft of a machine tool
A numerical control apparatus is provided for controlling a position of a feed shaft in relation to a rotational angle of a main shaft of a machine tool. A value denoting the actual position of the...
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4914364 |
Numerical control apparatus
Disclosed herein is a numerical control apparatus for controlling drive spindle heads in a rectangular coordinate system of machining apparatuses such as a lathe, a miller, a laser beam machining...
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4879660 |
Thread cutting machine with synchronized feed and rotation motors
A thread cutting machine is provided with a control system in which, according to one aspect, the rotation of the spindle is controlled in the synchronous manner following up the feed amount of the...
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4866358 |
Motor control circuit with vibration detector
A motor control circuit for a machine, such as a granulator, having an intake adapted to receive parts to be machined. The motor control circuit detects the introduction of parts into the machine...
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4813821 |
Thread cutting machine
A thread cutting machine where the rate of advance of the thread cutting tool is controlled by means of a control system whereby the rotation of the tool and its rate of advance toward the...
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4780654 |
Control apparatus for drilling machine
A drilling machine comprises an electric drill having a drill motor for rotating an annular drilling tool and a feed control motor for moving the annular drilling tool forward and backward with...
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4746848 |
Weft yarn feeding device for a loom
A weft yarn feed device (1) comprises a measuring and storing drum (7) for storing a predetermined length of a weft yarn (4) thereon for picking operation, a rotary yarn guide (6) for winding the...
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4728874 |
Method for controlling intermittent operations of processing apparatus
A method for realizing energy saving, for each of a plurality of mills provided in the hot rolling line, during the pause period until a successive work piece arrives a mill from a preceding work...
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4709198 |
High-speed machining controller
A high speed machining controller comprises an acoustic emission sensor which is installed in or near a machine for machining a work piece in a high speed and which detects acoustic emission...
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4701686 |
Line tracking control method
A line tracking control method of controlling a robot (51) to cooperate with a conveyor (50) in its movement determines a speed of movement of the conveyor (50) as a constant, determines a...
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4656897 |
Numerical control device for automatic lathe
The cabinet of the numerical control device contains a memory, a frequency changer, an amplifier and two correcting units. A programing station with keyboard and mounted on the cabinet enables...
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4656405 |
Tapping machining method
A tapping machining method for moving a tapping tool to a commanded position in synchronism with rotation of a spindle, to subject a workpiece to threading, and thereafter rotating the spindle in...
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4639650 |
Control system for a cooling fan in an impact printer
A control system for an impact printer having a cooling fan, in which a current for driving a printing device is detected as a voltage and the detected voltage is compared with a reference value....
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4630214 |
Jig grinder with automatic reciprocation and outfeed control
A control system for an automated jig grinder enables an operator to designate an incremental outfeed distance to be traversed for each outfeed operation and a reciprocation stroke count to be...
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4617503 |
Active datum for coordinate reference in a numerically controlled machine tool
A datum is disclosed for use as a coordinate reference in a numerically controlled machine tool. The datum which is active, consists of an elongated member, typically one half wavelength in length,...
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4572996 |
Control unit for model vehicles
A control unit for model vehicles, such as model railway trains, model automobiles, etc. For independent operation of several model vehicles on a common electric circuit, it is known to allocate to...
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4570112 |
Control circuit for numerically controlled motor
A numerically controlled motor provides a drive at a rate which is proportional to rotation of an independently driven shaft. In addition, the ratio of such rate to such rotation can be varied by a...
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4562392 |
Stylus type touch probe system
A non-cutting tool or stylus (32), mounted in a position where a tool normally resides on a turret (26) of a numerically controlled machining system, rubs against the workpiece (41) as it rotates....
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4524812 |
Modulated forming machine
A material forming machine comprising a forming tool driven by a forming tool motor, a workpiece, a feed drive motor, a sensor, and a reference signal, wherein said sensor varies the speed of the...
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4513646 |
Numerically controlled machine tool
A numerically controlled machine tool comprises a tool movable into engagement with a workpiece, means for generating a first signal being a measure of the distance between the tool and a datum...
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4478009 |
Automatic control system for machine tools
An automatic control system for machine tools having rotary tools is disclosed in which the tool drive motor load current, which is proportional to the mechanical load on said drive motor, is...
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4441059 |
Cutting feed sensing device
A feed rate sensing system for a drilling machine or the like in which a linearly movable cutting tool-supporting block carries a rotatable tool spindle. Linear motion of the supporting block is...
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4419613 |
Apparatus for intermittently driving endless belt in automatic screen printing machine
An apparatus for intermittently driving an endless belt by two electric motors in an automatic screen printing machine, which comprises a pair of rollers, an endless belt supported on the rollers,...
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4406605 |
Apparatus for forming concrete pipe of uniform density including control means to vary feed rate of concrete/aggregate as function of packerhead torque
In order to form concrete pipe of uniform density in apparatus where a packer head packs concrete into a mold to form the pipe, the horsepower of the drive motor driving the packer is sensed and...
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