Hybrid tool servo diamond turning of multiscale optical surface based on spectral separation of tool path

Yang, Shengyuan; Yu, Deping; Yang, Huanxing; Feng, Yiping; Liu, Xiaoming; Yin, Zhengxin

doi:10.1007/s00170-021-07406-7

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…With the growing demand for high-quality complex curved surface parts, the STS turning operation becomes an alternative way to manufacture vitally mechanical parts for the machine tools, aircraft, optics, etc. [1,2]. With two linear axes, i.e.…”

Section: Introductionmentioning

confidence: 99%

Toolpath planning method with the constraint of cutting force fluctuation in slow tool servo turning for complex curved surface parts

Qin

Jia

et al. 2023

Int J Adv Manuf Technol

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Parts with the complex curved surface are commonly-used in high-end equipment. The machining quality of the complex curved surface parts is important for the property of high-end equipment. With position control of the main spindle i.e. C axis, the slow tool servo (STS) turning is a very promising technique to effectively machine complex curved surface parts. However, the turning machining quality is restricted by the cutting force fluctuation in finishing turning. Hence, the STS turning toolpath generation approach with the constraint of the cutting force fluctuation is proposed in this study. As the cutting force is proportionate to the cutting area, the cutting area for turning complex curved surfaces is analyzed and calculated. Then the functional relation between the cutting force fluctuation and the feed rate is derived. Based on the geometrical characteristic of the first revolution of toolpath, the feed rate is optimized with small cutting force fluctuation to derive the cutter contact points (CCPs) of toolpath in the cylindrical coordinate system. Then the cutter location points (CLPs) of STS turning toolpath are calculated with tool nose radius compensation. From the validation experiment results, it can be seen that the cutting force fluctuation, the profile tolerance and the surface roughness of parts are effectively reduced, and the surface roughness of the part machined with the proposed toolpath planning method is 17.625 nm. Thus, this study provides guidance for toolpath generation with constraint of the fluctuation of the cutting force in STS turning for a complex curved surface.

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Section: Introductionmentioning

confidence: 99%

Toolpath planning method with the constraint of cutting force fluctuation in slow tool servo turning for complex curved surface parts

Qin

Jia

et al. 2023

Int J Adv Manuf Technol

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show abstract

“…Liu et al presented a long-stoke FTS to obtain a large-amplitude tool motion, which led to the fabrication of a sinusoidal surface with five sinusoidal waves and an amplitude of 20 µm on 6061 aluminum [13]. More recently, Yang et al fabricated a multiscale optical surface by diamond turning using the high-dynamic performance of FTS and the long stroke of a slow tool servo [14]. Pu et al proposed a dual-axial FTS diamond turning method for the one-step fabrication of hierarchical micro-nano-structured surfaces, in which the additional x-axial motion is effective for deterministic generation of a variety of secondary structures [15].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Sinusoidal Microstructures on Curved Copper Surface by Ultra-Precision Diamond Cutting with a Rotary B-Axis and Fast Tool Servo System

Zhao

Song

et al. 2021

Applied Sciences

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While curved surface microstructures have wide applications in optical components and devices, how to achieve high machining accuracy of the microstructures is crucial for their applications. In the present work, we fabricate sinusoidal modulation microstructures on a curved copper surface by ultra-precision diamond cutting, with the combination of a rotary B-axis and a fast tool servo system. Specifically, tool path planning, together with the consideration of a curved, sinusoidal surface meshing and tool tip arc segmentation compensation, is carried out. Preliminary cutting experiments are firstly carried out on a homemade four-axis ultra-precision lathe, which demonstrates the advantages of additionally applying the rotary B-axis in suppressing burr formations and over-cutting phenomenon over the sole utilization of the fast tool servo system. Subsequent experiments are carried out to evaluate the effects of feed rate and the number of sampling points on the machining accuracy of the microstructures under the combination of a rotary B-axis and a fast tool servo system. With the optimized machining parameters, sinusoidal modulation microstructures, which have a wavelength of 700.6 μm, a peak-to-valley of 18.7 μm, a surface roughness of 18.9 nm and a deviation of profile tolerance of 4.326 μm, are successfully fabricated on a curved copper surface with a face radius of 10 mm and a curvature radius of 500 mm.

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Introduction to Precision Machining Micro/Nano Structures

Zhang

Cao

2023

Fabrication of Micro/Nano Structures via Precision Machining

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Hybrid tool servo diamond turning of multiscale optical surface based on spectral separation of tool path

Cited by 6 publications

References 28 publications

Toolpath planning method with the constraint of cutting force fluctuation in slow tool servo turning for complex curved surface parts

Toolpath planning method with the constraint of cutting force fluctuation in slow tool servo turning for complex curved surface parts

Fabrication of Sinusoidal Microstructures on Curved Copper Surface by Ultra-Precision Diamond Cutting with a Rotary B-Axis and Fast Tool Servo System

Introduction to Precision Machining Micro/Nano Structures

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