A torque wrench is disclosed for use in rotating a range of different sized fasteners. The torque wrench may include an input end configured to receive a torsional input, and a gear train operatively driven to rotate by the torsional input. The torque wrench may also include an adjustable adapter connected to the gear train at an output end and configured to adjustably engage the range of different sized fasteners, and a housing configured to enclose the gear train and the adjustable adapter.

Provided is a screw length determination system capable of determining the length of a screw with a high degree of accuracy. A PLC (10) determines the length of a screw on the basis of the amount of rotation or the position in the axial direction of a driver during a period lasting from the time when the screw completes its descent until any time from among the time when provisional seating occurs, the time when the primary tightening period ends and the time when the period of holding for primary tightening ends.

Provided is a screw length determination system capable of determining the length of a screw with a high degree of accuracy. A PLC (10) determines the length of a screw on the basis of the amount of rotation or the position in the axial direction of a driver during a period lasting from the time when the screw completes its descent until any time from among the time when provisional seating occurs, the time when the primary tightening period ends and the time when the period of holding for primary tightening ends.

A regulator for a power tool for tightening a fastener in order to unite two or more pieces into a joint. The regulator regulates the power tool when tightening the fastener such that the fastener is tightened to a predetermined target. The regulator calculates an output signal to the power tool, which output signal is based on the product of the torque exerted by the power tool on the fastener and the angle for turning the fastener about its axis. The output signal is used for tightening the fastener to the predetermined target. The regulator is also applicable to a power tool for a rivet joint.

A fastening device includes first to third rotary sensors (position detecting unit) which are provided in a support arm and detect a position of a nut runner (fastening tool), and a main controller (controlling unit) which has a storage unit for storing a plurality of fastening positions of a chain cover, and drives the nut runner when a detection result from the first to third rotary sensors coincides with position information of the fastening position of the chain cover stored by the storage unit. Therefore, during a fastening work, an operator does not need to pull a trigger to drive and rotate the nut runner, thus reducing a burden on the operator during the fastening work.

A fastening device includes first to third rotary sensors (position detecting unit) which are provided in a support arm and detect a position of a nut runner (fastening tool), and a main controller (controlling unit) which has a storage unit for storing a plurality of fastening positions of a chain cover, and drives the nut runner when a detection result from the first to third rotary sensors coincides with position information of the fastening position of the chain cover stored by the storage unit. Therefore, during a fastening work, an operator does not need to pull a trigger to drive and rotate the nut runner, thus reducing a burden on the operator during the fastening work.

A tool may be configured at least with a fastener that can be accessed with a shaped bit. A controller portion of the tool can be arranged to predict bit deflection that enables a tool configuration to be adapted in response to actual bit deflection to conform to the predicted bit deflection.

A tool may be configured at least with a fastener that can be accessed with a shaped bit. A controller portion of the tool can be arranged to predict bit deflection that enables a tool configuration to be adapted in response to actual bit deflection to conform to the predicted bit deflection.

In a method for connecting a press-in bolt with a metal sheet, the metal sheet is positioned upon a cover element of a joining tool. The press-in bolt is forced by the joining tool in a pilot hole of the metal sheet as the metal sheet is supported by the cover element in its capacity as a die, until a head portion of the press-in bolt rests upon one side of the metal sheet and the cover element is pressed upon a shaft portion of the press-in bolt and radially deformed to rest upon another opposite side of the metal sheet.

Provided is a bolting tool that includes a mounting portion and a torque transfer portion. A bolt assembly is mounted to the mounting portion. The bolt assembly includes a bolt and a nut threaded onto a position along an external threaded portion of the bolt. The torque transfer portion transfers tightening torque to the bolt and the nut of the bolt assembly mounted to the mounting portion. The mounting portion includes a bolt engagement portion, which is engageable with a head of the bolt, a nut engagement portion, which is engageable with the nut, and a coupling portion, which couples the nut engagement portion to the bolt engagement portion coaxially and with a predetermined spacing therebetween.