A screw fastening apparatus for fastening a screw member having a bearing surface with respect to a member to be fastened by rotating the screw member from a theoretical seating point to a target rotational angle, including a rotational angle sensor which senses rotational angle values of the screw member for fastening the screw member, a torque detector which detects torque values for fastening the screw member, a torque value difference detector which detects a plurality of torque value differences, each of the torque value differences is a difference of the torque values detected at intervals of a constant rotational angle, a slip detector which detects a slip of the screw member with respect to the member to be fastened, from an average of the torque value differences, and a screw fastening discontinuing unit which instructs to discontinue the screw fastening when the slip is detected by the slip detector.

An electric pulse tool performs a tightening operation in which torque is delivered in pulses to tighten a screw joint. The electric pulse tool includes an output shaft, a torque sensor to determine a torque value associated with tightening of the screw joint, and an angle sensor to determine an angular displacement of the screw joint. The tool provides low torque pulses of a torque value of less than 15 percent of an electric pulse tool max torque value on the output shaft until a low threshold torque value is reached. Next the tool starts measuring an angular displacement of an element of the screw joint and provides tightening torque pulses of a torque value of more than 15 percent of the electric pulse tool max torque value on the output shaft. The tool stops providing torque pulses on the output shaft when a target parameter is reached.

A mode setting unit sets a parameter setting mode or a work mode. A parameter setting unit sets a plurality of parameter values in the parameter setting mode. A torque estimation unit calculates a tightening torque value by using a detection result from an impact detection unit. In a work mode, a control unit stops a rotation of a motor based on the plurality of parameter values set by the parameter setting unit and in accordance with the tightening torque value calculated by the torque estimation unit. In the parameter setting mode, a work information storage unit stores the tightening torque value calculated by the torque estimation unit during a tightening work according to a user operation, and the parameter setting unit sets the plurality of parameter values based on the tightening torque value stored in the work information storage unit.

Systems, methods and apparatus for automated vehicle wheel removal and replacement are provided. One system includes a computer system with applications for scheduling the replacement of tires for the vehicle. An electronically controlled lift device and robotic apparatus is configured for interaction with the computer system. The lift device mechanically adjusts arms for placement on lift points of vehicles. The robotic apparatus detects positioning of lug nut configuration for a wheel, removes lug nuts, and then removes the wheel from the wheel hub with gripping arms. The wheel and tire are then handed off to a separate tire changing machine. When a new tire is replaced the robotic apparatus then mounts the wheel to the original wheel hub, and then secures the lug nuts to the lug nut bolts.

A screw having a screw head and a screw shank, wherein the screw head is provided with a driving formation and the screw shank is provided at least partially with a thread. The screw shank has a cylindrical holding portion and an end portion that narrows towards a screw end, and in the holding portion the thread is formed as a standard thread. The holding portion has a circular cross section, and the end portion narrows starting from the holding portion. The end portion is provided with at least two thread turns which are formed as a forming thread, and the end portion has a polylobular cross section and the screw shank is hardened in the holding portion and in the end portion.

A method for preloading a bearing includes releasably, threadably, and directly attaching an attaching member to a circumferential outside surface of an exposed end of a threaded shaft of an axle or spindle. A frame is axially separated from, and coupled to, the attaching member. A plurality of extensions extends from the frame axially past the attaching member toward the wheel hub assembly. An adjustment mechanism moves the frame and the plurality of extensions axially towards the wheel hub assembly to contact the wheel hub assembly and/or the bearing to apply a preload to the bearing within the wheel hub assembly.

An electric pulse tool for performing tightening operations, where torque is delivered in pulses to tighten a screw joint, includes an output shaft, a sensor arranged to determine a parameter value associated with the tightening of the screw joint, a processor, and a memory containing instructions executable by the processor. The electrical pulse tool operates to provide torque pulses on the output shaft in a first direction until the determined parameter value associated with the tightening of the screw joint reaches within or above a predetermined first interval including a target parameter value. The electrical pulse tool also operates to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction in case the determined parameter value exceeds the target parameter value within a predetermined second interval.

An electric pulse tool performs a tightening operation in which torque is delivered in pulses to tighten a screw joint. The electric pulse tool includes an output shaft, a torque sensor to determine a torque value associated with tightening of the screw joint, and an angle sensor to determine an angular displacement of the screw joint. The tool provides low torque pulses of a torque value of less than 15 percent of an electric pulse tool max torque value on the output shaft until a low threshold torque value is reached. Next the tool starts measuring an angular displacement of an element of the screw joint and provides tightening torque pulses of a torque value of more than 15 percent of the electric pulse tool max torque value on the output shaft. The tool stops providing torque pulses on the output shaft when a target parameter is reached.

An apparatus for securing an insert in a hole, the insert having an axis, a section comprising a thread disposed around the axis and a section comprising a plurality of splines, and the hole having a section comprising a corresponding thread and a section comprising a plurality of grooves corresponding to said splines, the apparatus comprising a driver arranged to rotate the insert, a torque measurement device arranged to measure the driving torque applied by the driver, and a controller arranged to cause the driver to drive the insert into the hole until the splines are level in the axial direction with the grooves by rotating the insert in a first direction, and align the splines with the grooves by causing the driver to further rotate the threaded insert whilst measuring the driving torque using the torque measuring device, and stopping the further rotation based on the measured driving torque.

A tooling assembly for fastener installation has a socket body reversibly rotatable by a driving mechanism. A bore in the socket body has a first end portion and a central portion incorporating threads. A second end portion of the bore receives and engages a severable section of a frangible fastener. A pin is received in the bore and constrained from rotation by the driving mechanism. The pin has an ejection shaft with mating threads selectively receivable in the threads of the central portion of the bore. The socket body is freely rotatable with the mating threads positioned in the first end portion of the bore. Rotation of the socket body in torques the frangible fastener on a stud fracturing the severable section. Reverse rotation of the socket body engages the mating threads in the threads translating the pin. The ejection shaft ejects the severable section from the second end portion.