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李鍾赫 충주대학교 1993 한국교통대학교 논문집 Vol.27 No.-
Using machine structural carbon steel(SM45C)at discontinueous cutting by face milling machine, I have a experiment which was changed cutting speed, feed speed and cutting depth. I have obtained the result as follows: 1. I have obtained excellent finishing surface when it was rapid cutting speed. In order to cutting efficiency, tool life and illuminance of finishing surface, I have rapidly had feed speed. 2. It was happened chattering phenomenon, if we have slowly made feed speed, when we have made cutting work. 3. With deep cutting depth, it has not an great effect on the illuminance of finishing surface.
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이종혁,박달근 충주대학교 2006 한국교통대학교 논문집 Vol.41 No.-
From the experimental study on lathe cutting work of Mg alloy, the characteristics such as Sr and SiC for maximum peak to valley roughness height, the third point height, ten-point hight. Experiments is roughness for sampling length determine of measuring length is 15mm. maximum peak to valley roughness height is Sr increased with most suitable cutting condition at 0.5% and SiC increased with most suitable cutting condition at 10%. The third point height is Sr increased with most suitable cutting condition at 0.5% and SiC increased with most suitable cutting condition at 10%. ten-point hight is Sr increased with most suitable cutting condition constant at 0.5% and SiC increased with most suitable cutting condition at 10%
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鑄物砂의 粒子分布에 따른 壓縮强度 및 通氣度에 關한 考察
李鍾赫 忠州大學校 1982 한국교통대학교 논문집 Vol.15 No.1
Moulding sand was assorted to the mesh of #40,#50,#100#140 by ro-tap sieve shaker and the assorted moulding sand was put into the mesh in common moulding sand Each moulding sand has different percent of assorted moulding sand. The testing results are summerized as follows; 1) Testing moulding sand D has good percent of mesh and secondary permeability. The permeability is considered relative to mesh. 2) The testing moulding sand that has many particles (#140-pan) has not so good strength and permeability.
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이종혁,장규섭,윤한교 충남대학교 농업과학연구소 1987 農業技術硏究報告 Vol.14 No.1
In order to observe the strawberry as the raw materials and to compare the color of strawberry's products, Hunter L, a, b tristimulate color values were measured physically by color difference meter. Food textural properties of strawberry were measured by Rheo textural meter for rheological properties of strawberry jam. According to results obtained, it showed that Hunter L, a, b tristimulus color values were affected by ripening time of strawberry and Hunter color values changed regularly on different pH. Deformation of red color pigment Hunter color values changed linearlly on different pH, therefore red color pigment of elderberry showed to be used as a food color agent. The first peak of strawberry in TPA curve was high as cherry, grape and pineapple Strawberry jam showed pseudoplastic characteristic and time dependence.
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李鍾赫 忠州大學校 1985 한국교통대학교 논문집 Vol.18 No.2
The machine tool with development of a manufacturing machine industry has a important role. moreover the heigh frequency in use of milling machine has been increased. A new method for requiring of various manufactured article share and a precision has beed studied. In this paper, I used a machine structural carbon steel SM 17C by covered electrode materials using cemented carfide face cutler in order to rise heigher efficiency of the milling machine working I studied by a comparative investigation to make a change cutting condition of covered electrode materials working resistance, cutting speed, feed and depth of cutling in order to investigate a prinary factor, in affecting at sliding guide way of the finishing face. In addition, I had a comparative study relation with cutting speed measuring cutting resistance.
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이종혁 경성대학교 생산기술연구소 1997 생산기술연구지 Vol.4 No.-
Speech is convenience of usage and is superior to another interface of natural. and yet there are many people that pronunciation is not correct, and pronunciation learning tools is not popularization. In this paper, we designed CAI(Computer Assistance Instruction) for pronunciation learning using acoustic analysis. This CAI consist of wave form, spectrographic, oral map, instruction message and command parts. This CAI is implemented by using the Access 2.0, Visual Basic 5.0 and multimedia techniques. This CAI menu are vowel pronunciation, word pronunciation, dictation, statistical report and exit. This CAI is compatible, flexible and powerful. Therefore this can be used to the teaching tools of pronunciation in primary school, preschool, special classes for the education of mentally handicaped children.
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Gun Drill 加工에 있어서 機械的 性質에 關한 硏究
李鍾赫 충주대학교 1994 한국교통대학교 논문집 Vol.29 No.1
In this paper, I have studied on the measurement for roundness, parallelism and surface illuminace according to feed velocity by gun drill under the foundation for the elementary course of theory when it was work brass that was not heat treatment. 1. The more feed quality was increased the more error value of parallelism climbed from inlet to outlet. The reason is result from influence by turning motion. 2. It happened that the roundness hole became a half moon by translation motion when it is slowly moved cutting velocity. 3. the surface illuminance appears very good when it downs the feed velocity slowly, but the cutting efficiency lowers a demerit.
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李鍾赫 충주대 2001 한국교통대학교 논문집 Vol.36 No.1
In this paper, I have studied on the harmonic drive reducer compared with actual profile, through I have a analysis of geometrical figure about to tooth profile motion and gearing, assuming that the analysis of harmonic drive has a plane mechanism motion. I have obtained the result as follows : 1.When the flex spline has moved, differential teeth has relatively transported.Each tooth has never changed about to rigid body. 2.At the motion of couple tooth profile between gearing circular spline and flex spline, these obtained the shape of rolling plate with same relative motion from under decision to fixation by each tooth profile pitch in the neutral line. 3.When it has given a part tooth profile under the passing contact point of rolling plate from normal line with two tooth profile at the point tooth profile gearing, it could obtained the same acting relative tooth profile. 4.The harmonic drive reducer could obtain high torgue ratio.high torque capacity and high reduction ratio and it were much geared so gearing tooth profile at the same time that it used in a great many field.
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