Patent application number | Description | Published |
20080246349 | Drive guide apparatus - The present invention provides a drive guide apparatus capable of ensuring an increased lifetime by preventing heat generated from a primary side of a linear motor from being transferred to a rail or a moving member of a guide mechanism to which the primary side of the linear motor is connected, thereby preventing variation of rolling resistance or sliding resistance of the guide mechanism. The drive guide apparatus has a linear motor and a guide mechanism that has a rail and a moving member provided to be movable relative to the rail. A primary side of the linear motor is connected to the rail. Thermal insulators for blocking heat generated from the primary side of the linear motor are provided between the primary side and the rail of the guide mechanism to which the primary side is connected directly or indirectly. | 10-09-2008 |
20080303356 | Rod-Type Linear Motor - By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the forcer housing depending on a purpose of use, and a linear motor can be manufactured at low cost. The linear motor includes a magnet rod composed of a large number of magnetic poles arranged with predetermined pitches along an axial direction and a forcer having a through-hole into which the magnet rod is loosely inserted and reciprocatable relatively to the magnet rod according to an applied electric signal. The forcer is composed of a forcer housing in which the through-hole is defined and a coil member which is arranged on an inner peripheral surface of the through-hole of the forcer housing and to which the electric signal is applied. The forcer housing is formed by mold forming with an insulating nonmetal inorganic material. | 12-11-2008 |
20090049938 | Electric Actuator - An electric actuator is provided with a power transmission mechanism capable of converting a rotating driving power supplied from an electric motor to a reciprocating motion. This power transmission mechanism is provided with a cylindrical member formed, in its inner peripheral surface, with at least one row of rolling member rolling groove, a nut member disposed to be reciprocally through the rolling members endlessly circulating in the inner peripheral surface of the cylindrical member, and a cylinder rod operatively connected to an end portion of the nut member to be axially movable with respect to the cylindrical member. The reciprocating motion of the nut member in the axial direction is guided by the circular cylindrical member. According to such structure, high output and high controllability can be realized, as well as realizing of a compact electric actuator of a size similar to a conventional hydraulic cylinder. | 02-26-2009 |
20090146507 | Linear Motor Actuator - A linear motor actuator includes a raceway member | 06-11-2009 |
20090152960 | MICRO ACTUATOR - Disclosed is a micro actuator capable of being formed in compact as a whole, such as 10 mm in diameter by diminishing a difference between a stroke distance of a moving member and an overall length, and by reducing a sectional area taken in a direction orthogonal to a stroke direction. The micro actuator includes: a spline shaft formed as a cylinder with a hollow part and having an axially extending slit opening; a spline nut fit-engaged with the spline shaft and axially guiding the spline shaft; a pair of end caps fixed to openings at both ends of the spline shaft; a magnet rod supported at both ends within the hollow part of the spline shaft by the end caps; and a forcer loosely fit-engaged with a periphery of the magnet rod within the hollow part of the spline shaft to constitute a linear motor together with the magnet rod and connected with the spline nut through the slit opening. | 06-18-2009 |
20090218894 | LINEAR MOTOR - A compact linear motor is provided which is able to limit a rod, which linearly moves relatively to coils, from revolving. | 09-03-2009 |
20090261663 | LINEAR MOTOR AND METHOD OF MANUFACTURING THE SAME - Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. | 10-22-2009 |
20090309529 | POWER BRANCHING SYSTEM AND POWER BRANCHING METHOD - Provided is a power branching system for driving a plurality of motors by use of a single servo driver, the power branching system capable of protecting each of the motors. | 12-17-2009 |
20100024587 | XY TABLE ACTUATOR - Provided is an XY table actuator that, while building-in a drive means for freely moving an object placed on a table within an XY-plane and positioning the object, can be significantly reduced in size and that helps to suppress an increase in table height. The actuator has: a stationary plate ( | 02-04-2010 |
20100060087 | DRIVE GUIDE APPARATUS - A drive guide device capable of effectively releasing heat produced by a mover. The drive guide device has a movement unit | 03-11-2010 |
20100102496 | ROTARY BEARING, ROTARY TABLE DEVICE AND TABLE DIAMETER DETERMINING METHOD - A rotary table device includes a hollow motor drive source, a table rotated thereby, and a rotary bearing supporting the table. The rotary bearing is provided an outer race having an inner surface to which a rolling surface is formed, an inner race having an outer peripheral surface to which a rolling surface opposing to the rolling surface of the outer race is formed, and a plurality of rolling members disposed in a rolling passage formed by the rolling surface of the outer race and the rolling surface of the inner race, and a cooling medium passage (α, β) is formed so as to be adjacent to either one of the inner race and outer race constituting a rotational driving side. According to the structure mentioned above, a rotary bearing and a rotary table device capable of achieving suitable cooling effect can be provided. | 04-29-2010 |
20100127578 | X-Y TABLE ACTUATOR - Provided is an X-Y table actuator, which is capable of moving and positioning a movable table ( | 05-27-2010 |
20100171459 | LINEAR MOTOR POSITION DETECTION SYSTEM - Provided is a position detection system which is inexpensive and does not need to control the accuracy of mounting a sensor strictly. | 07-08-2010 |
20100206102 | LINEAR ACTUATOR WITH DUSTPROOF MECHANISM - A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator | 08-19-2010 |
20100207464 | LINEAR MOTOR AND LINEAR MOTOR COGGING REDUCTION METHOD - Provided is a linear motor capable of reducing cogging. | 08-19-2010 |
20110001282 | ROTARY TABLE DEVICE PROVIDED WITH COOLING STRUCTURE AND ROTARY BEARING PROVIDED WITH COOLING STRUCTURE - A rotary table device includes a cooling structure and a rotary bearing provided with a cooling structure. A rotary table device provided with a cooling structure includes a hollow motor as a drive source, a table rotated by the hollow motor, and a rotary bearing supporting rotational motion of the table, in which the rotary bearing includes an outer ring having an inner peripheral surface to which a rolling surface is formed, an inner ring having an outer peripheral surface to which a rolling surface facing the rolling surface of the outer ring is formed, and a number of rolling members in a rolling passage formed by the rolling surface of the outer ring and the rolling surface of the inner ring, and a heat sink is formed to either one of the inner and outer rings. | 01-06-2011 |
20110181129 | LINEAR AND ROTARY ACTUATOR - Provided is a linear and rotary actuator capable of bearing moment and load from a movable body and downsizing its radial dimension. A spline shaft is held in housings to be movable linearly in the axial direction and rotatable about the axis. The spline shaft is connected to a mover shaft of a linear motor. The spline shaft is surrounded with a hollow rotor of a rotary motor. The rotor is connected to a spline nut which transmits rotation of the rotor to the spline shaft by rotating together with the rotor and allows linear movement of the spline shaft. The rotor of the rotary motor is rotated by a stator of the rotary motor. The spline nut, the stator of the rotary motor and a stator of the linear motor are arranged in this order from an end of the spline shaft and mover shaft along the axial direction. | 07-28-2011 |
20120261920 | ROTARY MOTOR ACTUATOR AND HORIZONTAL AXIS WIND TURBINE - Provided is a rotary motor actuator capable of simplifying the manufacture and assembly process. | 10-18-2012 |
20140159551 | LINEAR AND ROTARY ACTUATOR SYSTEM - A linear and rotary actuator system includes a shaft member moving linearly in an axial direction and rotating around an axis line, a hollow rotor surrounding the shaft member, a stator of a rotary motor having a space for holding the rotor and which rotates the rotor around the axis line, linear bearings, that rotates together with the rotor to transmit rotation of the rotor of the rotary motor to the shaft member and accepts linear movement of the shaft member, an angle measuring unit for measuring a rotation angle of the rotor, and a rotary motor driver for controlling the rotary motor in such a manner that the rotation angle of the rotor of the rotary motor measured by the angle measuring unit conforms to a command value. The rotation angle of the shaft member is controlled by controlling the rotation angle of the rotor of the rotary motor. | 06-12-2014 |
20140306459 | BEARING FOR VERTICAL AXIS WINDMILL AND VERTICAL AXIS WIND POWER GENERATOR - In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball ( | 10-16-2014 |