One object is to provide an industrial device in which abrasion powder (conductive substance) can accumulate on a sensor to an amount necessary for proper failure prediction. An industrial device according to an embodiment of the present invention includes: a lubricant reservoir portion including a region in which a lubricant circulates; and a sensor including a pair of electrodes disposed in the region in which the lubricant circulates, the sensor being configured to sense variation of electric resistance between the pair of electrodes.

A control device configured to control a robot including an articulated arm having a plurality of joints each provided with a motor and turned by driving of the motor and a base supporting the articulated arm includes: a temperature information obtaining unit configured to obtain temperature information about the plurality of joints; a joint specifying unit configured to specify one of the joints that requires cooling, based on the obtained temperature information about the plurality of joints; and a motor control unit configured to control the motor of each of the plurality of joints, wherein, when the joint specifying unit specifies one of the joints, the motor control unit controls the motor of at least one of the joints that is located on a side closer to the base from the specified joint so as to turn the joint on the base side for a given time.

Provided is a life evaluating device that evaluates the life of a lubricant in a machine including a motor and a transmission mechanism that is lubricated by the lubricant and transmits power of the motor to a movable unit. The life evaluating device includes a motor-heat-value calculating unit that calculates a motor heat value on the basis of a current value of the motor, a frictional-heat-value calculating unit that calculates a frictional heat value in the transmission mechanism on the basis of rotating speed of the motor and a coefficient of friction of the transmission mechanism, a lubricant-temperature estimating unit that estimates temperature of the lubricant on the basis of the calculated frictional heat value and the calculated motor heat value, and a life estimating unit that estimates the life of the lubricant on the basis of the estimated temperature of the lubricant and information concerning impurities in the lubricant.

An automatic lubrication robot includes a robot, a grease hose, and a delivery unit. The robot includes a lifting and lowering unit that moves linearly and an arm coupled to the lifting and lowering unit, and the robot is arranged in a clean room to perform an operation. Grease for lubricating the robot passes through the grease hose. In response to the linear movement of the lifting and lowering unit, the delivery unit delivers the grease to the robot via the grease hose.

A robot arm includes a first structural component, in particular a main frame for fixing the robot arm in its surroundings, a second structural component, in particular a carousel, which is mounted rotatably about an axis of rotation on the first structural component and a transmission for twisting the second structural component relative to the first structural component. The transmission includes a transmission casing and, a casing of the first structural component has at least one integrated cavity for receiving lubricant for the transmission. The cavity is fluidically connected to the transmission casing by at least one connecting duct in the casing of the first structural component.

An average value of differences between command current values acquired at a plurality of timings when the motor is controlled at a rotation speed within a preset fixed range in a preset period and an average value of the command current values in the period is acquired, and the average value of the differences is accumulated in an order of the acquisition. When a difference between an accumulated value of the average values of the differences up to an N1th time and an accumulated value of the average values of the differences up to an Nth time becomes greater than or equal to a preset value, and then become less than the preset value, and then again becomes greater than or equal to the preset value, a notification of an abnormality sign in the robot arm is transmitted.

A parallel link robot includes a main body, a number of driving mechanisms provided in the main body, a number of link units each having one end connected to corresponding one of the plurality of driving mechanisms, a movable plate disposed beneath the main body, and supported by the other ends of the number of link units, and an oil tray placed adjacently to the lower surface of the main body, where the oil tray is detachably attached to the main body.

The present invention relates to a grease replacement method of replacing grease in a case (84) including a sealable gear chamber (31, 36) accommodating a gear (85) as a member to be lubricated, a grease injection port (61, 62) configured to inject grease into the gear chamber (31, 36), and a discharge port (32, 37) configured to discharge the grease in the gear chamber (31, 36), and a grease suction device to be used to perform this method. The grease replacement method includes a suction step (S2) of sucking the grease in the gear chamber (31, 36) from the grease injection port (61, 62) with the discharge port (32, 37) being open, and discharging the grease outside the case (84), and an injection step (S4) of injecting new grease into the grease injection port (61, 62) and supplying the new grease to the gear (85). This facilitates discharging of old grease.

A relief unit that is attached to an attachment hole penetrating through a wall of a housing accommodating a power transmission mechanism of a robot together with lubricating oil in a sealed state, which includes a body that is provided with an attachment section attachable to the attachment hole and that forms a communication passage disposed at a position where an internal space of the housing and an external space are connected when the attachment section is attached to the attachment hole. An opening and closing mechanism that is provided in the communication passage, closes the communication passage in a sealed state when the opening and closing mechanism is closed, and that opens the communication passage when the opening and closing mechanism is opened. a catching part is disposed at an intermediate position of the communication passage that catches the lubricating oil.

A robot includes a base, an arm provided on the base, and a reducer having a sliding part and decelerating driving of the arm, wherein a lubricating oil can be supplied to the sliding part from an opposite side to the arm with respect to the sliding part.