Method and system for unlocking a calibratable electronic torque tool, torque testing device, and torque tool

A method for checking a calibration of a calibratable electronic torque tool, the method comprising:

• coupling a tool head of the calibratable electronic torque tool to a tool head holder of a torque testing device;
• establishing a direct data link between the calibratable electronic torque tool and the torque testing device;
• determining a testing device-side torque test value of the calibratable electronic torque tool by a torque sensor of the torque testing device;
• determining a tool-side torque test value of the torque tool by a torque sensor of the torque tool;
• transferring the tool-side torque test value to the torque testing device via the direct data link;
• and
• simultaneously displaying the tool-side torque test value and the testing device-side torque test value on a display device of the torque testing device.

A system for unlocking a calibratable electronic torque tool that is prevented from operation by a lock, the system comprising:

• the calibratable electronic torque tool comprising a tool body, a tool head, a transmitting and receiving device, and a torque sensor;
• and
• a torque testing device comprising a tool head holder, a transmitting and receiving device, a torque sensor, and an integrated data processing device,
• wherein the tool head holder is designed to hold the tool head,
• wherein the transmitting and receiving device of the calibratable electronic torque tool and the transmitting and receiving device of the torque testing device are configured to establish a direct data link between the calibratable electronic torque tool and the torque testing device,
• wherein the torque testing device is configured to determine a testing device-side torque test value of the calibratable electronic torque tool by the torque sensor of the torque testing device,
• wherein the calibratable electronic torque tool is configured to determine a tool-side torque test value of the calibratable electronic torque tool by the torque sensor of the calibratable electronic torque tool and to transfer the tool-side torque test value to the torque testing device via the direct data link,
• wherein the data processing device is configured to receive the tool-side torque test value and the testing device-side torque test value, compare them to each other, and generate an unlocking signal when a difference between the tool-side torque test value and the testing device-side torque test value is within a specifiable tolerance range,
• wherein the data processing device is furthermore configured to transfer the unlocking signal to the calibratable electronic torque tool via the direct data link, and
• wherein the lock of the calibratable electronic torque tool is overridden and unlocked via the unlocking signal transferred to the calibratable electronic torque tool.

A system for checking a calibration of a calibratable electronic torque tool, the system comprising:

• the calibratable electronic torque tool comprising a tool body, a tool head, a transmitting and receiving device, and a torque sensor;
• and
• a torque testing device comprising a tool head holder, a transmitting and receiving device, a torque sensor, and a display device,
• wherein the tool head holder is designed to hold the tool head,
• wherein the transmitting and receiving device of the calibratable electronic torque tool and the transmitting and receiving device of the torque testing device are configured to establish a direct data link between the calibratable electronic torque tool and the torque testing device,
• wherein the torque testing device is configured to determine a testing device-side torque test value of the calibratable electronic torque tool by the torque sensor of the torque testing device,
• wherein the calibratable electronic torque tool is configured to determine a tool-side torque test value of the calibratable electronic torque tool by the torque sensor of the calibratable electronic torque tool and to transfer the tool-side torque test value to the torque testing device via the direct data link, and
• wherein the display device is configured to simultaneously display the tool-side torque test value and the testing device-side torque test value.

A torque testing device, which includes a tool head holder, a transmitting and receiving device, a torque sensor, and an integrated data processing device, being configured to perform a method comprising:

• establishing a direct data link between the torque testing device and a calibratable electronic torque tool via the transmitting and receiving device of the torque testing device;
• determining, via the torque sensor of the torque testing device, a testing device-side torque test value of the calibratable electronic torque tool, which has a tool head;
• receiving a tool-side torque test value via the data link;
• and
• at least one of:
• displaying on a display device of the torque testing device the tool-side torque test value and the testing device-side torque test value;
• or
• comparing the tool-side torque test value with the testing device-side torque test value via the data processing device;
• generating an unlocking signal when a difference between the tool-side torque test value and the testing device-side torque test value is within a specified tolerance range;
• and
• transferring the unlocking signal to the calibratable electronic torque tool via the direct data link.

A calibratable electronic torque tool, which includes a tool body, a tool head, a transmitting and receiving device, and a torque sensor, being configured to perform a method comprising:

• establishing a direct data link between the calibratable electronic torque tool and a torque testing device via the transmitting and receiving device of the calibratable electronic torque tool,
• determining a tool-side torque test value of the calibratable electronic torque tool via the torque sensor of the calibratable electronic torque tool,
• transferring the tool-side torque test value to the torque testing device via the direct data link,
• receiving an unlocking signal from the torque testing device via the direct data link,
• via the received unlocking signal, overriding a lock of the calibratable electronic torque tool and unlocking the lock.