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Issue 1 ， 1995
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Development of Machining Technique for Iceland Spar Crystal
Abstract：Iceland spar is a kind of valuable opticalcrystal. It is very difficult to machine this crystaldue to its perfect cleavage and brittleness. Conventional machining methods used in produc-tion often result in low productivity and high reject rate。 The machining techniques for ice-land spar make a great advance as technological progress. In this paper,the present situationof machining techniques for iceland spar crystal at home and abroad and existing problemsare reviewed. Aslo, new development in recent years is introduced.Immediate problemsneed to be solved at present are proposed. This paper provides guides for further researchand production practicesKeywords：Iceland spar;Crystal;Machining;polishing- 21
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Published：2020-08-12 -
An Overview on the Identification,Prediction and Control Chatter(IPCC)During the Metal Machining Process
Abstract：The major job of scholars home and abroad is summarized on the IPCC during the metalmachining process, the advantage and disadvantage of which is analyzed.Keywords：Machining vibration(Chatter);Identification;Prediction;control- 20
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Published：2020-08-12 -
Soft X-ray Multilayer Fabrication by Magnetron Sputtering
Abstract：The preliminary experiment of fabricating soft X-ray multilayer by DC-RF planar mag-netron sputtering is described. Under appropriate working conditions,multilayers can be au-tomatically deposited according to designed period (thickness)using computer controlledtiming method. The results of X-ray small angle diffraction show that the film thickness ac-curacv is about 0.1nm.Keywords：magnetron sputtering;Soft X-ray multilayer- 43
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Published：2020-08-12 -
Design of Induced Transmission Filter According to Potential Transmission Concept
Abstract：The metal layer thickness of induced transmission filter is first determined according topotential transmittance concept.Then a correct design of induced transmission filter is obtained without complex correction. How to reduce band width and suppress background is also discussed.Keywords：Induced transmission filter;Potential transmittance;Spacing layer;Mutilayer anti-reflective films- 55
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Published：2020-08-12 -
High Accuracy Image Measurement System
Abstract：The Principle of image measurement system is that the geometrical parameters are ob-tained by processing the image edge of the object. For improving the accuracy of the imagemeasurement system, this paper proposed a crossed window automatic edge detection algo-rithem which has the properties of holding edge, reducing noise and adjusting threshold auto-matically in case of nonuniformluminary, and furthermore, a new subpixel edge detection al-gorithem based on polynominal interplation is presnte. By the algorithems the measuringresolution of CCD camera in image measurement system might be improved by about 60 times.Keywords：Image mesurement;edge detection;Subpixel edge detection;Polynominal interplation- 44
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Published：2020-08-12 -
Parallel Multiresolution Wavelet Transform(WT) and Its Implmentation
Abstract：Wavelet transform is a new method for signal and image processing. Unlike Fouriortransform, its integral kernel is unfixed. Its basis set is produced by mother function via dilation and shift operation, In this paper, the general theory of the wavelet transform(WT) isgiven. A new normolization method is discribed and the admissible condition of inversewavelet transform under this case is also derived.Keywords：Wavelet transform(WT);signal processing;Mother function;Normolization- 51
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Published：2020-08-12 -
Relationship of Parameters in Joint Transform Correlator
Abstract：Relationship among the parametrs in image input plane, power spectrum plane and correlation signal detecting plane of joint transform correlator is studied.Keywords：Joint transform correlation;power spectrum;resolution- 37
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Published：2020-08-12 -
Measuring and Control System for Sychrotron Radiation Soft X-ray Multilayer Reflectmoter
Abstract：This paper introduces structures functions and specialities of the hardware and softwarefor synchrotron radiation soft X-ray reflectometer, which is developed by us first using a soft X-ray multilayer mirror as a dispersive element. Practical measurements are reported.Keywords：Communication;STD-BUS;Operating system;Data acquisition- 24
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Published：2020-08-12 -
Measurement of Spectrum and Energy of Soft X-ray Source Produced by Z-pinch Metal Plasma
Abstract：By using a pinhole transmission grating(PTG)spectrograph, the experiment of measuring spectrum of soft X-ray source produced by Z-pinch metal plasma has been performed.the experimental results and the data processing of spectrum are firstly presented.At the sametime, the pulse X-ray energy of the Soft X-ray source was measured by using a calorimeterand the expermental results are discussed.Keywords：Metal Plasma;Soft X-ray;Pinhole transmission grating (PTG);calorimeter- 34
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Published：2020-08-12 -
A Prototype Aparatus for Float Polishing and Initial Experiments
Abstract：Float polishing is one of the advanced superpolishing techniques. This paper gives a description on our prototype machine for float polishing and initial experiments.We've polished 30BK7 glass with surface roughness better than 1nm Ra after 2～4 hours working.Keywords：Superprecision machining;float polishing;supersmooth surface- 29
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Published：2020-08-12 -
Application of Laser in Classical shoot an Arrow System
Abstract：The He-Ne laser system applies to classical shoot an arrow,it supplies the objective standard for shoot an arrow sports;It can correct sportsman mistakes on the aim at arrowtarget; It can supply data for select excellent sportsman.Keywords：He-Ne laser;Classical shoot an arrow;Sportsman- 50
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Published：2020-08-12 -
Methods for reducing Senssitivity of Micromachined Silicon Accelerometer
Abstract：This paper analyses the cross sensitivity of miromachined silieon accelerometer.Methodsfor reducing sensitivity of micromachined silicon accelerometer are described.Keywords：Cross sensitivity;Accelerometer;Micromachined silicon- 42
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Published：2020-08-12 -
Software Compensation Method of Phase Error In Morie'Strip Division
Abstract：In morie strip division,the phase error between two signals will affect the measurement precision. This paper discussed in detail the compensation method of the phase error using software. In additton,the effect adopting this method is illustrated by theoretical analysisand calculation .Furtherly,the feasibility of this method in practice is testified.Keywords：Morie Strip division;Phase error compensation- 45
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Published：2020-08-12 -
Application of Cam Mechamism in Panoramic Aerocamera
Abstract：In this paper,the problems of mechanical coordination in a panoramic camera have been discussed. also the design idea and the principle of a new mechanism is composed pawls and cams for a panoramic camera have been presentedKeywords：Pawls;Cams;Intermittent mechanism;Panoramic camera- 25
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Published：2020-08-12 -
Mechanisms Motion Synthesis of A Pantograph Robot
Abstract：As a example which closed mechanisms uses as robotic mechanisms.this paper discusses the motion synthesis of pantograph robot mechanisms in detail,gives the function type and trajectory-type synthesis equation of this mechanisms and provides the theoretical foundation for designing the structural parameters of this mechanisms.Keywords：Pantograph mechanisms;Motion synthesis;Machine hand (robot)- 33
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Published：2020-08-12 -
A Testing System for Errors of Precision Working Station
Abstract：The precision working station is a typical mechanism in manufacturing equipment for VLSI, its accuracy being doubtlessly of significance. Based on the equipment in the authors'laboratory, a dynamic testing system for errors of precision working station is developed, inwhich frequency-division, phase-fitting,and error-calculation are carried out by an 8098 microcontroller, and hence the data collection and the data processing are integrated.The system is flexible and easy to use with a larger range of phase-fitting and a higher measuring accuracy.Keywords：Precision working station;Phase-fitting;Error-testing;8098 Microcon-troller- 41
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Published：2020-08-12 -
Applied Software for Measuring System of Coal Heaps
Abstract：The software for the measuring system of coal heaps are presented in detail in this paper. It is included that main programe of PC-computer,subprogram of single-chip processorand software of CCD camera driver.Besides, the characteristics and functions of the programes are indicatedKeywords：Applied software;Measuring system;CCD driver- 22
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Published：2020-08-12 -
Influence of Diaphragm size on Interference Fringe contrast
Abstract：This paper discussed the influence of the diaphragm size on interference fringe contrastwith He-Ne laser,We descovered the best diaphragm size with the help of experiment.Keywords：Diaphragm;laser;Contrast- 35
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Published：2020-08-12 -
Digital Bearing Clearance Measuring Instrument
Abstract：In this paper,we introduce a kind of new type instrument,which can replace the traditional bearing clearance measuring devices, named the Digital Bearing Clearance MeasuringIns trument. We then give the brief descriptions of basic principle, software and hardware design ideas,functions,advantages and important application value for the instrumentKeywords：Digitalisation;Bearing;Clearance- 32
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Published：2020-08-12
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