Portable calibration tool
AssigneeEnerpac Tool Group Corp.
InventorsRobin Shaw, Andrew Dumelow
Life of this patent
Estimating the term…
Abstract
A tool assembly configured to calibrate a hydraulic torque wrench and a method of calibrating a wrench. The tool assembly may generally include a tool including a head, a base, an arm extending between the head and the base, and a strain gauge configured to sense a strain exerted on the tool; and an electronic processor in communication with the strain gauge and configured to calculate a torque based on a sensed strain.
Claims32
A tool assembly configured to calibrate a torque wrench, the tool assembly comprising:
- a tool including a head configured to be engaged and driven by a drive element of the torque wrench, a base configured to abut a reaction arm of the torque wrench when the head is engaged by the drive element, and an arm extending between the head and the base,
- wherein the tool is configured so that operation of the torque wrench when the head is engaged by the drive element forces the base against the reaction arm to apply a bending force on the tool;
- a strain gauge configured to sense a strain exerted on the tool by the bending force;
- and
- an electronic processor in communication with the strain gauge and configured to calculate a torque based on the strain.
A calibration system configured to calibrate a torque wrench, the torque wrench including a housing, a fluid actuator, and a driver supported by the housing and driven by the fluid actuator, the calibration system comprising:
- a tool assembly removably coupled to the torque wrench, the tool assembly including a working portion configured to engage the driver, a sensor configured to sense a condition on the tool assembly during calibration, and an electronic processor in communication with the sensor and configured to calculate a torque based on a sensed condition, an input of the torque wrench being adjustable based on the torque;
- wherein the tool assembly includes a tool with a head providing the working portion, a base, and an arm extending between the head and the base, and
- wherein the arm has a wall extending between the head and the base, and wherein the sensor is coupled to the wall.
A calibration system configured to calibrate a torque wrench, the torque wrench including a housing, a fluid actuator, and a driver supported by the housing and driven by the fluid actuator, the calibration system comprising:
- a tool assembly removably coupled to the torque wrench, the tool assembly including a working portion configured to engage the driver, a sensor configured to sense a condition on the tool assembly during calibration, and an electronic processor in communication with the sensor and configured to calculate a torque based on a sensed condition, an input of the torque wrench being adjustable based on the torque;
- wherein the tool assembly includes a tool with a head providing the working portion, a base, and an arm extending between the head and the base, and
- wherein the head has a head wall, and wherein the sensor is coupled to the head wall.
A tool assembly configured to calibrate a torque wrench, the tool assembly comprising:
- a tool including a head, a base, an arm extending between the head and the base, and a strain gauge configured to sense a strain exerted on the tool;
- and
- an electronic processor in communication with the strain gauge and configured to calculate a torque based on a sensed strain, wherein the arm has a wall extending between the head and the base, and wherein the strain gauge is coupled to and configured to sense a strain in the wall.
A tool assembly configured to calibrate a torque wrench, the tool assembly comprising:
- a tool including a head, a base, an arm extending between the head and the base, and a strain gauge configured to sense a strain exerted on the tool;
- and
- an electronic processor in communication with the strain gauge and configured to calculate a torque based on a sensed strain, wherein the head has a head wall, and wherein the strain gauge is coupled to and configured to sense a strain of the head wall.
A tool assembly configured to calibrate a torque wrench, the tool assembly comprising:
- a tool including a head, a base, an arm extending between the head and the base, and a strain gauge configured to sense a strain exerted on the tool;
- an electronic processor in communication with the strain gauge and configured to calculate a torque based on a sensed strain;
- a measurement module having a module housing supporting the electronic processor;
- and
- a case defining a storage space, the tool and the measurement module being supportable in the storage space.
Dependencies are inferred from the claim text.