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What is Thrust Force and Torque in Drilling? | FUTEK

Application Summary

Drilling is probably one of the most widely used machining operations and one of the most important ones. So, what are thrust force and torque in drilling?

 
The ability to predict cutting forces are essential in the optimal design and manufacturing of products. In addition, accurate measurement of drilling torque and thrust helps in the design of fixtures and the prediction of wear and tear of cutting tools.


Designers strive to better understand the heat generation and temperature changes during friction drilling operation on difficult-to-machine materials, and thrust force and torque measurement support this effort with crucial data.


Based on the drilling measurement data, operators and manufacturing engineers can optimize the process, prevent process failures, predict power drill or drill bit maintenance or replacement, and investigate the drilling process parameters, including cutting speed, feed rate, drill bit geometry, and composition, on the output product quality.


In some orthopedic medical device applications, repairing whole bone fractures requires surgical drilling to create pilot holes for easy insertion of screws and locking bolts and plates to align adjacent bone fragments. Haptic drilling systems that offer tactile force and torque feedback, and remote robotic surgery in which a surgeon conducts the procedure off-site, electrically-powered hand drills with torque and thrust force feedback remain the common clinical practice. 

Products in Use

QMA150  Custom Torque and Thrust Biaxial Sensor paired with the following signal conditioners:


  • 2 x IHH500 - Digital Hand Held Display
  • 2 x IPM650 - Panel Mount Display
  • 2 x USB Series - Internal PCB with USB Digital Output 
  • 2 x IAA Series - Strain Gauge Analog Amplifier with Voltage Output
What is Thrust Force and Torque in Drilling drill
How it Works
  1. In this application, the QMA150 Torque and Thrust Biaxial Sensor is mounted in between the power drill and the holding guiding bracket. While the sensor is bolted to the power drill and the bracket, the drill bit is free to pass thru the sensor central hole. FUTEK's Engineers can customize a bi-axial sensor to be embedded into the power drill if the application requires.

  2. As the power drill operates, the thrust force and reaction torque is measured by the bi-axial sensor.  Different drilling conditions and materials cause different thrust and drilling forces, which is captured by the sensor.

  3. These measurements are sent directly to a paired instrument which provides excitation voltage and conditions the signal (filtering, amplification, digitalization). Depending on signal conditioner selection, the operator can either view the data on a digital load display or stream the data directly onto a PC or a PLC/DAQ for data logging, control loop safety interlock or alarming.

  4. Based on the drilling measurement data, operators and manufacturing engineers can optimize the process, prevent process failures, predict power drill or drill bit maintenance or replacement, and investigate the drilling process parameters, including cutting speed, feed rate, drill bit geometry, and composition, on the output product quality.

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