Abstract: Provided is a separator having excellent chemical resistance, impact resistance, and productivity. A bearing retainer (1) is a separator that is interposed between two spheres adjacent to and moving in conjunction with each other for retaining the spheres configured to be movable in conjunction with and apart from each other and is formed from a resin composition containing a fluororesin which is a polymer of a monomer containing vinylidene fluoride as a main component. The bending modulus of elasticity of the resin composition is 1600 MPa or less, and the Charpy impact strength of the resin composition is 26 kJ/m2 or more.

Abstract: Provided is a ball screw device which enables easy production and assembly of a nut member and formation of an endless circulation path for balls in the nut member with high accuracy. The nut member includes a plurality of nut components arranged in a superposed manner along an axial direction of a screw shaft. At a boundary portion between the nut components which are adjacent to each other, a raceway path for balls extending around a periphery of the screw shaft is formed. A joining surface of each of the nut components used for joining with another one of the nut components includes: a raceway forming surface which is annularly formed around the through hole; and an abutment surface for joining which is formed on an outer side in a radial direction with respect to the raceway forming surface.

Abstract: An object of the present invention is to preferably detect the failure accompanied with the decrease in the pre-load in a ball screw unit. The failure diagnosis is performed for the ball screw unit on the basis of a combination of a resonance frequency in an axial direction of a predetermined machine assembly including the ball screw unit and a motor and a position of a nut member on a screw shaft corresponding to the resonance frequency as provided when the screw shaft is driven and rotated by the motor.

Abstract: Provided is an actuator in which a load applied to a shaft and a workpiece is controlled. The actuator includes a support part that rotatably supports the shaft, a linear motion motor that moves the shaft in a direction of a central axis, a connecting member that is at least a part of a member connecting a mover of the linear motion motor and the support part, a strain gauge that detects strain of the connecting member, and a control device that controls the linear motion motor, based on the strain detected by the strain gauge.

Abstract: An object is to provide a mounting structure of a bearing member which enables size and weight reduction of entire apparatus and also contributes to cost reduction thereof. The mounting structure of a bearing member includes: a bearing member for supporting a rotary shaft; a case member to which the bearing member is mounted; and a mounting plate for clamping the bearing member in an axial direction of the rotary shaft in conjunction with the case member, wherein the mounting plate includes a mounting portion of a counter member which is mounted to the case member and clamps the case member in the axial direction in conjunction with the counter member.

Abstract: The motion guide device clamper mechanism includes a clamper main body connected to the movable member, an inner face having a tapered shape so that the distance between the facing faces is narrower toward the end of one face of the track me fiber, and one rolling member disposed between the facing faces of the one face of the track member and the inner face. The rolling member receives a pressing force toward a position where the distance between the facing faces of one face of the track member and the inner face of the clamper main body is narrow, so that a frictional force based on the taper shape acts on the rolling member, and the restraint of the clamper main body with respect to the track member is performed. Further, a frictional force based upon the taper shape is released and the non-restraint of the clamper is performed.

Abstract: A coil unit connection structure is provided which can integrate locations connected to a power cable into one side in an arrangement direction of a plurality of coil units. In a coil unit connection structure that electrically connects a plurality of coil units, each of the coil units includes a coil and a return wire. A plurality of the coils of the plurality of coil units is electrically connected to each other. A plurality of the return wires of the plurality of coil units is electrically connected to each other. A terminal unit is provided which includes a connecting wire that electrically connects the coil and the return wire of the coil unit at the terminal end.

Abstract: A screw device is provided which can facilitate management of a tolerance of a recess where a circulation component is housed. A circulation component is housed in a recess of a nut with clearance. At least part of the circulation component is blocked by a lid member fixed to the nut by fastening means. Upon a centrifugal force acting on a rolling element moving along a circulation path in the circulation component, the circulation component comes into contact at three points with the recess as viewed in an axial direction.

Abstract: An object of the present invention is to provide a technique for a gripping system having an arm mechanism and a hand mechanism attached to the arm mechanism, by which an operation of the arm mechanism can be stopped as soon as the hand mechanism contacts an object. In the gripping system according to the present invention, the hand mechanism is provided with a contact detection unit for detecting that a predetermined site of the hand mechanism has come into contact with the object. The hand mechanism is also provided with a signal transmission unit that is electrically connected to an arm control device. The signal transmission unit transmits a command signal to stop the operation of the arm mechanism directly to the arm control device at the point where the contact detection unit detects that the predetermined site of the hand mechanism has come into contact with the object.

Abstract: The rotary table device includes a base, a motor, a rotary drive shaft and a cross-roller bearing. An outer ring is rotationally driven through engagement of a pinion gear formed at a shaft end of the rotary rive shaft with a rack gear formed on the outer ring and transmission of a rotary drive force from the rotary drive shaft to the outer ring. The outer ring is formed in a hollow cylindrical shape covering a side of an inner ring, includes a table capable of mounting an external member on one side of the hollow cylindrical shape, and is integrated with the rack gear formed over an entire circumference of the other side thereof. With such a configuration, a rotary table device that can realize reduction in height, size and weight can be provided.

Abstract: Provided is a diagnosis method of appropriately recognizing a state of a rolling surface of a track member of a rolling guide device or a lubrication state of rolling elements using a sensor mounted to the rolling guide device. The diagnosis method is applied to a rolling guide device including: a track member having a rolling surface extending along a longitudinal direction of the track member; and a moving member, which is assembled to the track member through intermediation of a plurality of rolling elements configured to roll on the rolling surface so that the moving member is movable along the track member, and has an endless circulation path for the rolling elements.

Abstract: A control device for controlling a linear actuator having a linear motor and a brake device includes a magnetic pole position estimation means to estimate which of a plurality of sections obtained by dividing a magnetic pole position of 0° to 360°, the mover is located in on the basis of a direction of movement of the mover by pulse energization, a magnetic pole position setting means to perform direct current excitation at an estimated magnetic pole position estimated by the magnetic pole position estimation means and set the estimated magnetic pole position as a magnetic pole position of the mover, and a brake control means to turn on a brake device before pulse energization by the magnetic pole position estimation means is performed and turn off the brake device after the magnetic pole position estimation means estimates the section in which the mover is located.

Abstract: A mobile robot includes a driving unit which changes a moving velocity and a traveling direction, a detection unit which detects a plurality of detection objects disposed along a traveling path to a target point, and a control unit which acquires a distance and a direction to the detection object detected by the detection unit, calculates a traveling direction in which the distance to the detection object and the direction of the detection object satisfy a predetermined relationship, and controls the driving unit based on the calculated traveling direction.

Abstract: A control device for a linear motor is disclosed which is provided with a current limiter and a driver. The current limiter outputs either a target current value or a limiting current command value. When the target current value is output as the current command value, the driver applies a voltage to the linear motor based of the value obtained by multiplying a first proportional gain by the difference between the current value of the current flowing to the linear motor and the current command value. When the limiting current command value is output as the current command value, the driver applies a voltage to the linear motor based of the value obtained by multiplying a second proportional gain, which is greater than the first proportional gain, by the difference between the current value of the current flowing to the linear motor and the limiting current command value.

Abstract: A flying robot comprising: a flying body unit; a propulsion portion comprising a plurality of propulsion units configured to cause propulsion to occur by driving rotor blades, the plurality of propulsion units being provided on the flying body unit; a working body unit; a manipulator unit configured to be capable of executing predetermined work and comprising one or more work manipulators provided on the working body unit; and connection units provided on the working body unit and the flying body unit so as to enable the flying body unit to be connected with and disconnected from the working body unit; wherein the flying robot executes the predetermined work by the work manipulators in a state in which the working body unit and the flying body unit are connected at the connection units. The flying robot is caused to execute a wide range of content of work as far as possible.

Abstract: Provided is a linear-motion bearing, including: an outer cylinder member made of a synthetic resin, the outer cylinder member having a plurality of endless steel ball circulation paths each including an outer-peripheral-side steel ball circulation path and an inner-peripheral-side steel ball circulation path, and having sheet-like spaces in regions that are opposed to the endless steel ball circulation paths, respectively; a plurality of steel balls accommodated and arrayed in the endless steel ball circulation paths; and a synthetic resin plate, which has an arc cross section, and is fitted to each of the sheet-like spaces, the synthetic resin plate including a metal piece at a position at which the synthetic resin plate is held in contact with a steel ball row in the inner-peripheral-side steel ball circulation path, the metal piece having an elongated shape in a direction along the steel ball row in the inner-peripheral-side steel ball circulation path, in which the elongated metal piece is curved so as to

Abstract: A seal member for a ball screw device, which is fixed to an axial end surface of a nut member of the ball screw device and is configured to seal a gap between the nut member and the screw shaft, the seal member including: a plurality of base plates which each have a through hole having an inner diameter larger than an outer diameter of the screw shaft; a spacer plate, which is sandwiched between two base plates adjacent to each other, and has a seal accommodation hole having an inner diameter larger than an inner diameter of a through hole of the base plates; and a seal plate, which has a shaft-fitting hole corresponding to a sectional shape of the screw shaft in a direction perpendicular to an axial direction, and is arranged in the seal accommodation hole of the spacer plates.

Abstract: A flying robot executing predetermined work, the flying robot comprising: a body unit; and a propulsion portion comprising a plurality of propulsion units configured to cause propulsion to occur by driving rotor blades, the plurality of propulsion units being provided on the body unit; the flying robot further comprising: a contact support unit configured to contact a predetermined contact surface to be capable of supporting at least a part of the body unit; a sensor configured to detect an inclination of the body unit; and a control unit configured to, when the contact support unit contacts the predetermined contact surface, and the predetermined work is being performed, execute posture control to drive at least one of the plurality of propulsion units based on the inclination of the body unit detected by the sensor so that the inclination of the body unit is kept within a predetermined angle range.

Abstract: Provided is a motion guide device load measuring system that can accurately measure loads acting on a motion guide device in use. The load measuring system includes a position detecting unit (4) for detecting the position of a sliding member (12) relative to a track member (11) in a direction of relative movement, and at least one sensor (2a-2d, 3a-3d) for detecting the relative displacement of the sliding member (12) relative to the track member (11) in a radial direction and/or a horizontal direction. A calculating unit (6) calculates loads acting on the motion guide device (1), in association with the position of the sliding member (12), on the basis of position information detected by the position detecting unit (4) and displacement information detected by one or more of the sensors (2a-2d, 3a-3d).