Wire Deflection Research Articles

ワイヤ放電加工の加工精度向上に関する研究

This paper has been described precisely process of Wire Electrode EDM.First chapter, we describe introduction on this paper.After of second chapter, we describe relation between wire bending and wire tension, residual stress of tungsten wire, shape of chip in the water, relation between tension fluctuate and deflection of wire, and locus compensation which is based on wire electrode bending.We have some conclusion under that. Wire tension is most important control factor. Tension should choose as strong as possible. Tungsten and molybdenum wire electrode must have annealing process for removal residual stress. Processing chip in the water consist melted group (diameter is 0.1-several micron) and evaporated group (several 10-200Å). By the locus compensation, machining accuracy is improved at the corner part.

Theoretical investigation of sailwing airfoils taking account of elasticities

In a previous paper by these Authors (see last Abstract), in which a theoretical method for predicting the aerodynamic characteristics of a sailwing was presented, it was assumed that the trailing-edge position and the slackness in the wing surfaces remained fixed. However, when the sailwing is loaded the elasticities of the trailing-edge wire and of the wing surfaces cause the trailing edge to move and the surfaces to elongate. In the present paper, a two-dimensional theoretical model of each aerofoil section is used to simulate the three-dimensional characteristics of a sailwing, and a theoretical method is presented for the numerical analysis of two-dimensional double- and single-membrane sailwing aerofoil,s taking into consideration the deflection of the trailing-edge wire and the elongation of the membrane due to the aerodynamic forces. Development of the method, and results obtained, are discussed in some detail, and several conclusions are drawn.

Design of a molecular beam surface ionization detector in combination with a quadrupole mass spectrometer

Describes the design of an easily built and sensitive molecular beam detector suitable for molecules which can be handled by the surface ionization process. It has the advantages that is uses a round hot rhenium wire ensuring an ionization yield of 100% for most molecules, and that the whole system including ion deflection optics, quadrupole mass filter and ion multiplier can be positioned perpendicular to the molecular beam. The wire is placed in such a way that direct illumination of the multiplier is avoided. The theory of the ion deflection system is extensively treated and the results are compared with the experimental data. A maximum detection efficiency of 85% is obtained. The suitability of the combined round hot wire and ion deflection electrodes for an electron gun is under investigation).

Flow Measurement with a Suspension Wire

A flow measuring device based on the drag developed on a wire suspend transverse to the flow of water has been developed. The wire is suspended between a fixed support and an elastic support, with the wire deflection registered by a semiconductor strain gage incorporated at the elastic end. The gage formed part of a Wheatstone bridge circuit with a sensitive galvanometer and d-c amplifier recorder. The basic operating principle was studied in series of tests with the wire completely traversing a 2 in. diameter closed conduit and then the 11 in. dimension of a 11 in. by 5-1/2 in. closed circuit water tunnel, together with wire types varying from 0.001 in. to 0.0071 in. in diameter of different materials. A probe with a wire length of the order of 1 in. extended the work for open-channel flows. Velocity distributions have been determined within a wire diameter of the channel floor. The dynamic response of the probe in the vortex wake of a fixed cylinder and stability in sediment load also were investigated.