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Experimental Study on a "Snake-Type" Vibration Cutting Method for Cutting Force and Cutting Heat Reductions
Xiangyu Zhang1,2,3, Zhenlong Peng2, Deyuan Zhang4,5,6
1Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100091, China.
Biomimetics (Basel, Switzerland)
|August 16, 2019
Summary
This study introduces snake-type vibration cutting (SVC), inspired by snake movement, to improve material processing. SVC significantly reduces cutting force and temperature, enhancing surface integrity for difficult-to-cut materials.
Area of Science:
- Manufacturing Engineering
- Materials Science
- Bionic Design
Background:
- Conventional cutting (CC) methods face challenges with difficult-to-cut materials due to high cutting forces and temperatures, leading to poor machinability and surface integrity.
- Material properties like hardness and heat conductivity exacerbate issues in CC, causing rapid tool wear and unsatisfactory surface finishing.
- Natural examples, such as snake locomotion and insect striking, offer insights into heat dissipation and impact mechanics.
Purpose of the Study:
- To propose and investigate an ultrasonic-frequency intermittent cutting method, termed snake-type vibration cutting (SVC), inspired by bionic principles.
- To analyze the bionic kinematics and system design of the proposed SVC method.
- To evaluate the effectiveness of SVC in reducing cutting force, cutting temperature, and improving surface integrity compared to conventional cutting.
Main Methods:
- Bionic kinematics analysis based on snake movement and insect striking.
- Design and implementation of the snake-type vibration cutting (SVC) system.
- Experimental cutting of titanium alloys, a representative difficult-to-cut material, using both SVC and conventional cutting (CC) methods.
- Measurement of cutting force, cutting temperature, surface roughness, and residual stress.
Main Results:
- SVC demonstrated significant reductions in cutting force (up to 50%) and cutting temperature (up to 30%) compared to CC.
- The SVC method resulted in improved surface integrity, evidenced by enhanced surface roughness.
- SVC also led to a more favorable residual stress state on the finished surface.
Conclusions:
- The proposed snake-type vibration cutting (SVC) method offers a viable bionic approach to overcome limitations of conventional cutting for difficult-to-cut materials.
- SVC effectively mitigates high cutting forces and temperatures, thereby improving material machinability and surface quality.
- This innovative cutting strategy holds promise for advancing manufacturing processes, particularly for materials like titanium alloys.
