Abstract:
The method and the assembly are so developed as to preliminarly determine, by calibration of the digital torque converter tool assembly, an interrelation between torques and corresponding currents, at an established voltage. During use, the torques are monitored by measuring their corresponding currents and reaching eventualy an ultimate torque with its corresponding current, the ultimate torque having a value corresponding to the one prerequired by the user. When required by the user, rotational increments of the threaded fasteners are monitored until an ultimate angular position is reached. The ultimate angular position corresponds to a calculated value of a required tension in the threaded fastener.
Abstract:
Torque adjusting drive systems and packaged torque adjusting drive systems are disclosed herein. One aspect of the disclosure is directed to systems and torque adjusting drivers for specific firearm-related work tasks. In one embodiment, a torque adjusting drive system includes a torque adjusting driver. The driver includes a shaft assembly having a fastener coupling portion and a handle. The driver also includes a torque adjusting mechanism for setting a user-selected torque value and a torque value indicator mounted on the driver for displaying at least the user-selected torque value. In addition to the driver, the system also includes a plurality of fastener interfacing attachments configured to couple to the fastener coupling portion and for driving one or more target fasteners. The system further includes a torque guide having a plurality of representative indicia of the target fasteners, wherein the torque guide communicates recommended torque value settings for the target fasteners.
Abstract:
A torque indicating wrench (10) has a resilient beam (11) with a handle end (14) and a work-engaging end carrying a ratchet mechanism (13). The resilient beam is generally channel-shaped in transverse cross section and is tapered in thickness from the work-engaging end to the handle end. A reference beam (20) is disposed in the channel and has first and second ends respectively pivotally coupled to the work-engaging and handle ends of the resilient beam. The reference beam has openings adjacent to its first and second ends to facilitate pivotal coupling to the resilient beam while substantially eliminating non-pivotal relative movement in use. A handle housing (50) encloses the beams along substantially their entire lengths and is fixed to the resilient beam only adjacent to its handle end. The reference beam carries a Hall-effect sensor (46) disposed between magnets (48) on the resilient beam and coupled to electronic indicating circuitry including a display viewable through a window in the housing and push-button switches operable through apertures in the housing.
Abstract:
A ratcheting electronic torque wrench (10) has an input beam in the form of a hollow housing (11) with a handle end (29) and a work end (28), a ratchet head (30) disposed within the work end of the housing and rotatable relative thereto and a reaction beam (35) disposed within the housing and having one end fixed to the ratchet head for pivoting therewith about the axis thereof and input end (37) resiliently urged to a neutral position relative to the housing by two bias springs (40, 41) respectively engaging opposite sides of the reaction beam. A Hall-effect sensor (47) carried by the input end of the reaction beam is disposed between two permanent magnets (48a) and is powered by a battery (42) for producing an output indicative of reaction beam movement, which is proportional to applied torque. A display circuit (60) can display the applied torque or a predetermined torque level set by a preset circuit. An alarm signal (87) is generated when the applied torque reaches the predetermined level.
Abstract:
A socket for turning threaded connectors by a power tool comprises a socket body (1), connecting formations (3) for connecting a socket body (1) to a power tool, engaging formations (4) provided in the socket body (1) for engaging with a threaded connector and strain measuring formations (5) arranged in the socket body (1) so that when the socket body (1) engages a threaded connector and a tool is connected with the socket body (1) and turns the socket body (1) and therefore the threaded connector, the strain measuring formations (5) measure a turning resistance of the socket relative to a power applied by the power tool for turning the threaded connector.
Abstract:
An electronic torque wrench (10) comprises a body with an axial extension along a longitudinal axis; a front end provided with a coupling (14) intended to engage the wrench on a joint to be tightened by manual rotation around a rotation axis (15) which is transverse to the longitudinal axis (11); a handle (13) along the body for operating the wrench; and a sensor (16) for detecting a torque applied with the wrench to the coupling (14) and comprising two flex sensor elements (16a and 16b) which are arranged spaced apart along the longitudinal axis (11). An electronic control circuit (17) is connected to the sensor (16) for receiving signals from it and applying a method which comprises the steps of calculating, depending on the flexing values detected by the two sensor elements (16a and 16b), whether the flexing value detected by the sensor element closest to the front end is less than the flexing value detected by the sensor element farthest from the end front; and, if so, emitting an error signal.