The invention relates to a method for connecting at least two elements by a connecting element. The method comprises the steps of: providing a first element, a second element and the connecting element; placing the connecting element on a surface of the first element; in a first time period, rotating the connecting element at a first rotational speed and exerting a first axial force on the connecting element in the direction of the surface of the first element; and in a second time period, rotating the connecting element at a second rotational speed and exerting a second axial force on the connecting element in the direction of the surface of the first element.

A nut pickup and fastening device for automatic tire mounting includes a nut setting unit that arranges a plurality of nuts to align with the bolt arrangement of the wheel disk of a vehicle body, and a pickup fastener coupled to the tip of a robot arm. The pickup fastener may include a tool frame unit, a plurality of nut runners provided on the tool frame unit corresponding to the set nuts and configured to provide torque for nut fastening, and a plurality of holding sockets coupled to the tip of each nut runner, configured to pick up and hold the nuts from the nut setting unit.

A nut pickup and fastening device for automatic tire mounting includes a nut setting unit that arranges a plurality of nuts to align with the bolt arrangement of the wheel disk of a vehicle body, and a pickup fastener coupled to the tip of a robot arm. The pickup fastener may include a tool frame unit, a plurality of nut runners provided on the tool frame unit corresponding to the set nuts and configured to provide torque for nut fastening, and a plurality of holding sockets coupled to the tip of each nut runner, configured to pick up and hold the nuts from the nut setting unit.

The invention relates to a method for connecting at least two elements by a connecting element. The method comprises the steps of: providing a first element, a second element and the connecting element; placing the connecting element on a surface of the first element; in a first time period, rotating the connecting element at a first rotational speed and exerting a first axial force on the connecting element in the direction of the surface of the first element; and in a second time period, rotating the connecting element at a second rotational speed and exerting a second axial force on the connecting element in the direction of the surface of the first element.

A tool includes a first output from a gear system, the first output along a first axis and a second output from the gear system, the second output along a second axis. A first torque limiter is attached to the first output along the first axis and a second torque limiter is attached to the second output along the second axis. A first tool bit is attached to the first torque limiter along the first axis and a second tool bit attached to the second torque limiter along the second axis.

The invention relates to a method for connecting at least two elements by a connecting element. A first element, a second element and the connecting element are provided. The connecting element is placed on a surface of the first element. In a first time period, the connecting element is rotated at a first rotational speed and a first axial force is exerted on the connecting element in the direction of the surface of the first element. In a second time period, the connecting element is rotated at a second rotational speed and a second axial force is exerted on the connecting element in the direction of the surface of the first element.