In this context, a new machine tool – the nano grinding center – was developed, which allows to manufacture and apply ultra small micro pencil grinding tools without re-clamping. With this new machine tool, the influence of grain size, grain concentration, and process parameters on the material removal mechanisms was …

Ultra-Precision Machining (UPM) is a kind of highly accurate processing technology developed to satisfy the manufacturing requirements of high-end cutting-edge products including nuclear energy producers, very large-scale integrated circuits, lasers, and aircraft. The information asymmetry phenomenon widely exists in the design and …

Laboratory for Precision Machining LFM, Badgasteiner Straße 2-3, 28359 Bremen, Germany e-mail: [email protected] Ultra-Precision Machining: Cutting With Diamond Tools This article is written as a tribute to Professor Frederick Fongsun Ling 1927–2014. Single-point diamond machining, a subset of a broader class of processes ...

Fig. 13 shows the experimental setup of MACLA mold grinding which include grinding system and measurement system. Grinding experiments were implemented on a 5-axis ultra-precision machine tool (Moore Nanotech 350 FG) installed with a self-made on-line truing system to verify the effectiveness of the proposed compensation method.

Free-form surfaces have been widely used in complex optical devices to improve the functional performance of imaging and illumination quality and reduce sizes. Ultra-precision grinding is a kind of ultra-precision machining technology for fabricating free-form surfaces with high form accuracy and good surface finish. However, the …

Ultra-precision machining (UPM), which is capable of fabricating micro-components with less than 0.2 µm forming accuracy and 10 nm surface accuracy, is …

Ultra-precision machining has been well known as a very precise and effective way to prototype and fabricate different types of components with microstructures. In this paper, an ultra-precision micro-milling method has been presented to produce a micro-step pillar array as an embossing mold for semiconductor application. Theoretical …

One of the representative technologies of UPM is single-point diamond turning, which enables to produce ultra-precision reflectors or bearings. During the 1960 s, significant progress was made in the development of ultra-precision machine tools (UPMTs), and emphasis shifted to soft non-ferrous metals, such as copper and …

With the development of numerical control technology, the integration and complexity of UPMTs have constantly been rising. As stated in reference [78], the operation and machining process of ultra-precision machine tools are dynamic, nonlinear, time-varying, and non-deterministic. It is essential to develop accurate models of UPM in …

In this study, a fast tool servo-based ultra-precision diamond sculpturing method is proposed to fabricate micro-structured array surfaces with high machining efficiency and high machining quality. In this method, the diamond tool is driven by a developed fast tool servo with a closed-loop control system rather than an ultra …

At present, the production of micro parts and components with characteristic sizes ranging from micron to millimeter mainly relies on micro machining technology, but the dimensional size of micro tools (including micro cutting tools, micro grinding tools, and microelectrodes) involved in micro machining is ultra small and made of super …

Micro-grinding is a tool based mechanical micromachining process which is mostly applied to create and finish 3D micro-features on hard and brittle materials such as glass, silicon, …

The growth of the ultra precision technologies, precision engineering, micro engineering and now engineering nanotechnology is, naturally, closely related to the development of ultra precision machine tools (UPMTs). Among the …

For better analysis, they were matched based on the any DOF ... the lack of material removal at low fluid pressure is also confirmed by the fact that most of the grinding tool marks on the V-groove surface are still ... Xiong Z, To S (2019) Advances in ultra-precision machining of micro-structured functional surfaces and their typical ...

This paper presents an experimental and theoretical study of surface generation in the ultra-precision grinding of hard and brittle materials. The study takes into account the material properties, the relative vibration between the grinding wheel and the workpiece, the machining parameters and the phase shift of the grinding process. …

This review paper examines current research trends in mechanical ultraprecision machining and sustainable ultraprecision machining, along with the …

Micro grinding with a poly crystalline diamond (PCD) tool is one of the promising approaches for fabricating a micro mold on difficult-to-cut materials. As the …

This chapter focuses on the purpose of using diamond as a cutting tool in various ultra-precision machining applications. The complicated structures such as resin and ceramic mold used for making optical lenses are machined by the diamond tool to improve the precision of the finished product. It is difficult to machine hard and brittle …

Request PDF | Surface generation and materials removal mechanism in ultra-precision grinding of biconical optics based on slow tool servo with diamond grinding wheels | Diamond turning, fly ...

To overcome these shortcomings, new machine tool-based approaches for high-performance ultraprecision machining are being developed. These include the …

With the increase in demand for various types of small-aperture aspherical optical parts, the machining of a small tungsten carbide alloy mould with high accuracy is not only required, but essential. Ultra-precision grinding is generally used to process the small tungsten alloy aspheric mould, but there are some grinding marks and surface …

Precision grinding experiments are performed on an ultra-precision grinding machine (Moore Nanotech 350 FG) to verify the grinding simulation model of the aspherical-cylindrical surface topography and further analyze the effects on the grinding accuracy and surface roughness of three different tool path planning methods.

of the ultra‑precision grinding machine based on the key subsystem platforms ... precision-maintenance of the ultra-precision grinding machine tool experimentally. First, the subsystems with poor perfor - mance were identied based on former operating data, which turned out to be the hydrostatic spindle subsystem and the feed ...

Profile accuracy and surface quality of microstructural array mold generated by ultra-precision machining are the premise of precision glass molding technology. Most optical applications of microstructural array mold need to obtain microstructures with sub-micron profile accuracy and nanoscale surface roughness. However, the structural …

This keynote paper introduces general aspects of ultra-precision grinding techniques and point out the essential features of ultra-precision grinding. In …

Currently, diamond is commonly used as the ultra-precision tool material, which is expensive and seems to provide less cost-effective performance when used for machining softer materials such as brass. For these reasons, low-Co cemented carbides could be considered as potential materials for ultra-precision machining tools.

Ultra Precision Turned Part. How Ultra-Precision Machining Differs From Conventional Machining: Ultra precision machining focuses on achieving incredibly tight tolerances and superior surface finishes, whereas conventional machining typically deals with less stringent requirements.Additionally, ultra precision machining often involves …

Micro-grinding is a tool based mechanical micromachining process which is mostly applied to create and finish 3D micro-features on hard and brittle materials …

Under the opportunity of "Made in China 2025", in the field of ultra-precision, China has broken through many key bottleneck technologies, achieved many remarkable scientific research results, built a number of high-level ultra-precision processing technology innovation platforms, talent growth platforms and application …

Specializing in the laser fabrication of cutting tools made of hard and ultrahard materials such as tungsten carbide (WC), polycrystalline diamond (PCD), chemical vapor deposition diamond (CVD-D) and cubic boron nitride (CBN), the LASER LINE ULTRA uses an 8-axis configuration and picosecond lasers to machine complex …