Torque value adjustment system for use with click type torque wrenches to minimize repetitive motions

A system for adjusting torque value settings on click type torque wrenches.

A system for adjusting torque value settings on click type torque wrenches. The system is configured to limit repetitive motions by an operator including limiting repetitive wrist movements to rotate a wrench handle, while also providing a very portable and easy to use system with built-in safety features. The system includes an electric motor or driver that is operable, e.g., by manual movement of a lever on a controller or control signals from a digital controller, to rotate the head of the wrench while the operator holds the wrench handle in an unlocked configuration. The operator inserts the head of the wrench into an adaptive, self-centering chuck provided at the output of the electric motor. A tool rest extends from a base of the system at an end opposite the mounting chuck, and this rest is configured to support the body of the wrench parallel to the motor shaft.

BACKGROUND 1. Field of the Description (1) The present description relates, in general, to click type torque wrenches and use of such wrenches, and, more particularly, to a system or device designed to minimize a user's repetitive motions when using (e.g., setting torque values during quality assurance testing and other applications) click type torque wrenches. 2. Relevant Background (2) There are numerous applications where it is important to tighten fasteners, such as a nut on a bolt, to a specific tightness. A torque wrench is a tool used to apply a specific torque to a fastener such as a nut or a bolt. It is usually in the form of a socket wrench with an internal mechanism which will indicate (as by ‘clicking’) a specific movement of the tool handle in relation to the tool head) when a specified, typically adjustable by the user, torque value has been reached during application. (3) Click-type torque wrenches are so named because of the ‘click’ that is both heard and felt as the ratchet arm, which extends inside the tubular body of the torque wrench, strikes the inner wall of the tool when a set torque value is reached. This type of torque wrench is quite popular because the mechanism is accurate and reliable, providing, of course, that the wrench is properly maintained and checked. (4) In use, click type wrenches are set by rotating a knurled handle to a desired torque value that is typically given in pounds-foot or similar units. More specifically, click type torque wre