Overview

Ensuing the proper operation of assembly tools in an important part of building quality assemblies. RS Technologies can provide the equipment needed to verify the performance characteristics of most electric and pneumatic power torque tools.

These test procedures provide the steps necessary to verify the performance characteristics of most hand held electric and pneumatic power tools.

Typical Power Tool Testing Components (as pictured above)

1. Model 920 Portable Instrument: Calculates peak torque values for "click" type wrenches and displays peak torque values for other types of hand torque wrenches.
2. Rotary Torque Transducer: Measures the amount of torque that is applied by the hand torque wrench..
3. Power Tool Joint Simulator: Provides mounting and positioning for tool and a series of Belleville-type washers that can be setup in various arrangements to simulate hard, medium, or soft joint rates.
4. Transducer Cable: Connects rotary torque sensor to Model 920 instrument..
5. Printer (optional): Prints out data and statistics recorded by the Model 920.
6. Power Tool and Controller: The tool to be tested and its controller.

Power Tool Verification Procedure

1. Connect the instrument to the torque transducer and power it up.
2. Perform a transducer calibration and clear the memory.
3. Make sure that the Measurement Mode of the instrument is set to read Peak torque. Refer to the Model 920 instruction manual.
4. Set up the joint simulator to emulate the desired joint rate.
5. Position the tool on the joint simulator with the output drive of the power tool inserted into the input end of the rotary torque sensor. Then position the rotary torque sensor on the input drive of the joint simulator. Adjust the tool as needed. Refer to the photo above as needed.
6. Activate the power tool and run it until it shuts off or stalls.
7. Back off the joint simulator and return it to the start position.
8. Repeat steps 6 and 7 until the number of runs required by the test procedure are recorded. Typically, 10 to 25 rundowns are recommended.
9. If the tool does not meet the required torque shutoff specification, make the necessary adjustments to the tool or the tool controller, and repeat Steps 6 and 7.
10. If necessary, repeat Step 9 until the tool is performing within specification.
11. Print out the final test data or upload it to a computer as desired.