Quality improvements in laser cutting of mild steel have been achieved by a newly developed model-based optimisation strategy. The specific aims of such efforts are to assure quality of cut right up to pre-cut sections and boundaries, which are inherent in intricate part programs. Such boundaries frustrate heat transfer and result in bulk heating of the workpiece. This in turn leads to a degrad...

Abstract Fixtures are commonly employed in production as work holding devices that keep the workpiece immobilized while machined. The workpiece’s deformation, which affects machining precision, is greatly influenced by positioning of fixture elements around workpiece. By locators and clamps appropriately, deformation might be decreased. Therefore, it required to model fixture–workpiece system’s...

Even though significant progress has been made in the field of micro production and the development of miniaturized micro production-machines in the last ten years, an explicit consideration of clampingdevices has not taken place. The requirements for clamping technology in the manufacturing of microparts and the manufacturing of macroscale parts are highly different. Special clamping devices f...

Workpiece localization has direct relations with many manufacturing automation applications. In order to gain accurate workpiece measurement by coordinate measuring machines (CMM) or on-machine measurement system, the touch trigger probe is widely adopted. In spite of the high repeatability of the touch trigger probe, there are still error sources associated with the probe. In this paper, we wi...

This article presents the results of studying temperature distribution in process thermo-frictional cutting titanium alloy Ti-5553. The was simulated using Machining module DEFORM 3D software package based on finite element method. It found that when off Ti-5553, depending geometry circular saw, "disk-workpiece" contact zone reached T = 800 ÷ 1130 °C, and its propagation into depth workpiece 0....

In the paper analytical optimization of discontinuous grinding parameters according to temperature criterion is carried out and on its basis conditions for significant reduction cutting temperature, which consist mainly in increasing number contacts working ledges wheel with fixed cross-section machined workpiece, are determined. It established by calculations that providing 20 may be reduced u...

Thermal issues are critical when machining Ni-based superalloy components designed for high temperature applications. The low thermal conductivity and extreme strain hardening of this family of materials results in elevated temperatures around the cutting area. This elevated temperature could lead to machining-induced damage such as phase changes and residual stresses, resulting in reduced serv...

The problem of the malleability rhenium at room temperature is discussed. It has shown that manufactured by mean electron beam melting able to mechanical treatment rolling temperature. primary condition for minor share tensile stress in processing scheme. suppresses grain boundary sliding a coarse-grained workpiece this refractory HCP-metal.

In this study, an approach to identify factors affecting on surface roughness in a machining process is presented. This study is based on 81 data about surface roughness over a wide range of cutting tools (conventional, cutting tool with holes, cutting tool with composite material), workpiece materials (AISI 1045 Steel, AA2024 aluminum alloy, A48-class30 gray cast iron), spindle speed (6301000 ...