Study on the tool wear of 3-D elliptical vibration cutting

Lin, Jieqiong; Jing, Xian; Lu, Mingming; Gu, Yan; Han, Jiang

doi:10.5194/ms-8-215-2017

Cited by 7 publications

(2 citation statements)

References 18 publications

(13 reference statements)

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“…As shown in Figure 7 , the value of surface roughness obtained by the 2D-EVC and the non-resonant 3D-EVC are low relatively in comparison with the TCC method. This is because the cutting force and the wear of the tool can be significantly reduced in the cutting process due to the intermittent separation of the tool and the workpiece, and the quality of the surface could be improved simultaneously [ 19 , 33 ]. In addition, the value of surface roughness increases slightly with the increase of cutting speed in 2D-EVC and non-resonant 3D-EVC; this may be attributed to the slight chatter phenomenon in the tool caused by the intermittent contact between the tool and the workpiece, and the residual height of cutting surface will be changed with variation in the cutting speed.…”

Section: Resultsmentioning

confidence: 99%

Study on Ti-6Al-4V Alloy Machining Applying the Non-Resonant Three-Dimensional Elliptical Vibration Cutting

Zhou

Yan

et al. 2017

Micromachines

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The poor machinability of Ti-6Al-4V alloy makes it hard to process by conventional processing methods even though it has been widely used in military and civilian enterprise fields. Non-resonant three-dimensional elliptical vibration cutting (3D-EVC) is a novel cutting technique which is a significant development potential for difficult-to-cut materials. However, few studies have been conducted on processing the Ti-6Al-4V alloy using the non-resonant 3D-EVC technique, the effect of surface quality, roughness, topography and freeform surface has not been clearly researched yet. Therefore, the machinability of Ti-6Al-4V alloy using the non-resonant 3D-EVC apparatus is studied in this paper. Firstly, the principle of non-resonant 3D-EVC technique and the model of cutter motion are introduced. Then the tool path is synthesized. The comparison experiments are carried out with traditional continuous cutting (TCC), two-dimension elliptical vibration cutting (2D-EVC), and the non-resonant 3D-EVC method. The experimental results shown that the excellent surface and lower roughness (77.3 nm) could be obtained using the non-resonant 3D-EVC method; the shape and dimension of elliptical cutting mark also relates to the cutting speed and vibration frequency, and the concave/convex spherical surface topography are achieved by non-resonant 3D-EVC in the Ti-6Al-4V alloy. This proved that the non-resonant 3D-EVC technique has the better machinability compared with the TCC and 2D-EVC methods.

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Section: Resultsmentioning

confidence: 99%

Study on Ti-6Al-4V Alloy Machining Applying the Non-Resonant Three-Dimensional Elliptical Vibration Cutting

Zhou

Yan

et al. 2017

Micromachines

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“…Difficult-to-cut materials such as hardened alloys, ceramic materials and so on, have widely used in micro/nanomachining fields [1][2][3][4][5]. Due to the high strength, corrosion resistance, high-temperature stability and biocompatibility, the poor processing machinability and property of difficult-tocut materials make it not easy to achieve the ideal machining performance by the conventional processing ways.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a novel piezoelectrically actuated vibration assisted rotation cutting system

Zhao

Zhou

et al. 2018

Smart Mater. Struct.

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Elliptical vibration cutting (EVC) technology has been paid much attention as the unique characteristics of the intermittent cutting and friction reversal, but the residual-height between adjacent trajectories can not be eliminated. In order to solve the problem, we developed a new vibration assisted rotation cutting (VARC) system in this paper. The system has the characteristics of the pseudo-intermittent cutting and friction reversal, which greatly extends the tool-life, reduces cutting forces, and improves the accuracy of the work-piece. The mechanical system based on the parallel kinematic configuration of the two-axis, where the positioning of the tool position has ensured by the rotary motion platform (RMP). The L-shaped flexure hinges are used as the guidance flexure mechanism, to rotate of the RMP. Flexures hinge structure and piezoelectrically actuated are employed positioning in the design. The kinematic analysis of the pseudo-rigid-body model, the matrix-based compliance modeling method is applied for the compliance modeling, and the dynamics characteristic is modeled by using the Lagrangian principle of VARC system. The structural parameters are optimized by the improved differential evolution algorithm, and the theoretical modeling is validated by finite element analysis. Off-machine performance examinations were conducted to evaluate the parasitic motions, resolution, hysteresis, stroke, and frequency of the developed system. The results showed that the motion stroke of the piezoelectric actuator input end could reach up to 26.34 μm with a resolution of 8 nm, moreover, the coupling ration could be effectively decreased within 0.64%. The superior performances and easily achievable structure well facilitate practical applications of the proposed system in micro/nano-machining.

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Modeling and analysis of the chip formation and transient cutting force during elliptical vibration cutting process

Lin

Guan

et al. 2017

AIP Advances

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In traditional diamond cutting, the cutting force is usually large and it will affect tool life and machining quality. Elliptical vibration cutting (EVC) as one of the ultra-precision machining technologies has a lot of advantages, such as reduces cutting force, extend tool life and so on. It’s difficult to predict the transient cutting force of EVC due to its unique elliptical motion trajectory. Study on chip formation will helpfully to predict cutting force. The geometric feature of chip has important effects on cutting force, however, few scholars have studied the chip formation. In order to investigate the time-varying cutting force of EVC, the geometric feature model of chip is established based on analysis of chip formation, and the effects of cutting parameters on the geometric feature of chip are analyzed. To predict transient force quickly and effectively, the geometric feature of chip is introduced into the cutting force model. The calculated results show that the error between the predicted cutting force in this paper and that in the literature is less than 2%, which proves its feasibility.

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Study on the tool wear of 3-D elliptical vibration cutting

Cited by 7 publications

References 18 publications

Study on Ti-6Al-4V Alloy Machining Applying the Non-Resonant Three-Dimensional Elliptical Vibration Cutting

Study on Ti-6Al-4V Alloy Machining Applying the Non-Resonant Three-Dimensional Elliptical Vibration Cutting

Design and analysis of a novel piezoelectrically actuated vibration assisted rotation cutting system

Modeling and analysis of the chip formation and transient cutting force during elliptical vibration cutting process

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