Abstract
Linear Ball screw drives are commonly used for precise motion control of different mechanical systems including CNC machine tools, robotics and various aerospace systems. These drives are specifically designed on the basis of required operating performance parameters like output torque, rated power, slew rate, backlash, friction and required efficiency. These desired parameters significantly affect the functionality of ball-screw drive systems. Parameters like torque capability and slew rate should be tested to validate design and ensure safety during operation. Factors like Friction (dead band) and mechanical backlash offers very adverse effect on the repeatability and operation of overall dynamic system; specifically, when precise positioning accuracy is desired under extensive loading. This paper gives an approach to measure performance parameters for ball screw drives. Torque capacity & slew rate are analyzed and evaluated experimentally on a self-designed Hex Twist suspension test setup. Initially, Hex Twist setup was calibrated to find the deflection scale factor. A complete closed loop testing is also performed on the same testing setup to measure the overall functionality of ball screw drive actuator. The results indicate that the developed testing setup is very accurate in measuring open loop and close loop torque and slew rate values.
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Acknowledgement
The authors would like to acknowledge their seniors, colleagues, professors, and lab technical staff for their co-operation, suggestions, observations and input regarding this work. We are also thankful to the technical manager and lab supervisor of the concerned organization where we performed our lab/experimental work. We are thankful to everyone for his best wishes.
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Riaz, N., Shah, S.I.A., Rehman, F., Gilani, S.O., Emad-udin (2020). An Approach to Measure Functional Parameters for Ball-Screw Drives. In: Bajwa, I., Sibalija, T., Jawawi, D. (eds) Intelligent Technologies and Applications. INTAP 2019. Communications in Computer and Information Science, vol 1198. Springer, Singapore. https://doi.org/10.1007/978-981-15-5232-8_34
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DOI: https://doi.org/10.1007/978-981-15-5232-8_34
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