Abstract: A hydraulic torque wrench and a method of determining a load exerted on a workpiece by a hydraulic torque wrench. The wrench may generally include a housing; a drive element for engaging the workpiece; a drive actuator for transmitting a torque to the drive element; and a gauge coupled to at least one of the housing and the drive actuator, the gauge being configured to detect a characteristic indicative of a torque exerted by the drive element to the workpiece. The wrench may include a sensor configured to detect rotation of the drive element.

Abstract: A tool assembly configured to calibrate a hydraulic torque wrench and a method of calibrating a wrench. The tool assembly may generally include a tool including a head, a base, an arm extending between the head and the base, and a strain gauge configured to sense a strain exerted on the tool; and an electronic processor in communication with the strain gauge and configured to calculate a torque based on a sensed strain.

Abstract: A hydraulic torque wrench and a method of operating a hydraulic torque wrench. The wrench may be operable to apply torque to a workpiece. The wrench may include a housing; a drive system; a driver rotatably driven by the drive system and configured to selectively engage the workpiece; and a gripping mechanism including an end configured to selectively engage the workpiece, the gripping mechanism being movable between a first position, in which the end engages a surface of the workpiece, and a second position, in which the end is disengaged from the workpiece.

Abstract: A hydraulic torque wrench system includes an object including a plurality of fasteners and a hydraulic torque wrench. A wrench includes an orientation sensor and a controller having an electronic processor and a memory. The controller is configured to determine a desired sequence in which the wrench should tighten a plurality of fasteners on an object, receive a first measurement signal from the orientation sensor, and determine a first orientation value of the wrench based on the first measurement signal.

Abstract: A hydraulic torque wrench and method of operation. The wrench may include a housing supporting a drive element for engaging a fastener; a drive actuator for exerting a torque on the drive element; a sensor configured to sense movement of the housing; and a controller having an electronic processor, the controller being configured to receive a first signal from the sensor, determine, based on the signal, whether the housing is moving, and inhibit operation of the drive actuator in response to the housing of the hydraulic torque wrench moving.

Abstract: A tensioning device for tensioning a workpiece includes a main body having a chamber, a fluid inlet providing fluid communication between a fluid source and the chamber, a puller member supported in the main body and configured to engage the workpiece, and a piston positioned in the chamber and coupled to the puller member. Movement of the piston moves the puller member along a piston axis in at least a first direction. The tensioning device further includes a sensor coupled to the piston and operative to measure a displacement of the piston and/or the puller member in a direction parallel to the piston axis. The sensor generates a signal indicative of the displacement.

Abstract: A tensioning device for tensioning a workpiece includes a main body having a chamber, a fluid inlet providing fluid communication between a fluid source and the chamber, a puller member supported in the main body and configured to engage the workpiece, and a piston positioned in the chamber and coupled to the puller member. Movement of the piston moves the puller member along a piston axis in at least a first direction. The tensioning device further includes a sensor coupled to the piston and operative to measure a displacement of the piston and/or the puller member in a direction parallel to the piston axis. The sensor generates a signal indicative of the displacement.