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48 巻, 6 号
選択された号の論文の21件中1～21を表示しています
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木村 廣文, 吉澤 高志1982 年 48 巻 6 号 p. 687-692
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーThis paper describes failure processes in plastic rollers that undergo rolling contact, and the effect of initial surface roughness upon wear and rolling fatigue. Experiments were performed with mating cylindrical rollers of high density polyethylene (PE rollers) and chrome-plated cylindrical driving rollers. Surface roughness of the PE roller is affected by three successive transition processes. In the first period, the amount of wear can hardly be measured, although a reduction of surface roughness is noted. During the second period, wear occurs in proportion to the initial surface roughness. In the third period, wear becomes independent of the initial surface roughness, and increases in a manner exponential to load. At the end of this period, small cracks appear randomly, and grow into pits. Roller fatigue life, defined by the time when cracks appear, is shown by an S-N curve. It is found that fatigue limiting stress, represented by Hertz stresses, is about 107 Pa.抄録全体を表示PDF形式でダウンロード (1361K) -
古田 興司1982 年 48 巻 6 号 p. 693-700
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーThis paper describes APS system-Automatic Programming system for Sequence control-which is a special computer compiler created to simplify and standardize the procedure for designing logic control systems. It is discussed that by the model of a kind of a sequential machine, logic control systems can be generated from the input of the sequence program describing the sequential motions. The concept of APS system and an example application are also reported. The system is now being used in an automobile manufacturer, machine tool builder, material handling equipment manufacturer and computer service center etc. The result of applications to several kinds of machinery shows that the system is an effective tool for the standardization of design procedures.抄録全体を表示PDF形式でダウンロード (1076K) -
不均一組成を有する砥石による研削過程中島 利勝, 中川 平三郎, 石田 年伸1982 年 48 巻 6 号 p. 701-706
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPlunge grinding process of the wheel, which has the locally different composition generated in the manufacturing process, is experimentally analyzed. to make it clear how the locally different composition affects the geometrical accuracy in plunge grinding. Also discussed is the effect of grinding conditions upon the geometrical accuracy in such a plunge grinding. The waviness is generated on the work surface due to the locally different composition of wheel, and the waviness generation process is significantly affected by the revolution ratio of wheel to work. The chatter vibration and the chatter mark are also simultaneously recognized in the grinding process. The waviness becomes smaller with lower plunge speed and smaller width of the different composition. There exists the optimum dressing condition under which the waviness becomes smallest.抄録全体を表示PDF形式でダウンロード (1105K) -
処女面摩耗試験による逃げ面摩耗の推定新谷 一博, 藤村 善雄1982 年 48 巻 6 号 p. 707-713
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーIn recent years, many cermet tools possessing different cutting performance have been placed on the market. A great deal of cutting test must be conducted on the cermet tools to know their performance. To save the time and materials consumed, it is recommended to develop a new test method to estimate the cutting performance of tools. Therefore, the virgin surface wear test has been developed to simulate the wear process of the tool. The results obtained were as follows. (1) Sliding speed of the specimen was selected to generate the same interface temperature that the cutting edge is exposed at any cutting speed of interest. (2) Good correlation was obtained between virgin surface wear test and actual cutting test at the condition above mentioned. (3) Tool life curve can be estimated by combining virgin surface wear test and actual cutting test conducted in few minutes. (4) Wear mechanisms observed on the flank wear land of the cermet tools can be classified into three types according to the cutting speed (cutting temperature).抄録全体を表示PDF形式でダウンロード (1577K) -
竹内 芳美, 坂本 正史, 池崎 八生, 末富 昭1982 年 48 巻 6 号 p. 714-719
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーThe present study aims at constructing a behind-the-tape reader DNC system, linking a personal computer directly to a regular NC controller unit through a hand-made interface circuit. Therefore, the interface is joined to the output line of the tape reader of an existing NC lathe in order to receive NC command instructions instead of the tape reader. Besides, a DNC program has been developed to make the DNC system easy to use, by taking advantage of abundant peripherals installed in the personal computer. It enables one to easily provide NC programming and to immediately modify, edit and manage it. The completed system worked entirely, and it has been proved that the DNC system can be economically realized.抄録全体を表示PDF形式でダウンロード (1068K) -
石川 雄一, 梅澤 清彦1982 年 48 巻 6 号 p. 720-726
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーA pair of straight-line tooth profile internal gear and approximated tooth profile mating pinion has been developed to provide easy manufacture of highly accurate internal gear. In this paper, these internal gears are actually manufactured by new developed manufacturing methods, and their angular ransmission accuracies are measured. As a result, it is clarified that the approximated circular-arc which is obtained by applying the least squares approximating method to theoretical profile, is the most available for tooth profile of pinion, and that the higher angular transmission accuracies of ISO grade 4 are realized in the trial manufactured internal gears. Straight-line and circular-arc tooth profiles are the most simple forms, so they can be manufactured accurately and easily by the simple manufacturing methods using the conventional machine tools with simple mechanisms and tools. The measuring methods of individual accuracies of these internal gears by measuring the coordinates of tooth profiles are developed, and it is confirmed that the manufacturing errors can be indicated synthetically by this methods.抄録全体を表示PDF形式でダウンロード (1182K) -
江田 弘, 貴志 浩三, 上野 秀雄, 福田 伸二, 関口 常久1982 年 48 巻 6 号 p. 727-733
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーIn order to develop the free-cutting alloys of Al-Cu and Al-Mg2Si groups, various studies were carried out, by changing the chemical compositions and quantities. And the results shown below were obtained in the range of this experimental condition. (1) In view of the machinability of Al-Cu group alloys, Al-0.2Fe-4.5Cu-0.5Pb-0.25 Zn-0.35 Si-0.3Bi was regarded as the suitable chemical compositions and quantities. (2) As for the Fe and Zn lements in Al-Cu alloys, the cutting force and cutting temperature were remarkably improved in the case of 0.2%Fe-0.25%Zn as compared with the case of 0 or 0.6%Fe and 0.01%Zn. (3) In the relation among the quantities of Si, Cr, Zn, Fe, and Mn elements in Al-Mg group alloys, A1-0. 3Si-4.5Mg-0.3Zn-0Fe-0Mn showed the best machinability. (4) The machinability of Al-Mg2 Si group alloys was improved most when the chemical compositions and quantities were Al-1.0(Sn+Pb)-1.5 Mg2Si-0.5Mn-0.4Cu-0.05Ca-0.2Cr. (5) The addition of 1%(Sn+Pb) showed the large improvement effect for the disposal of chips, cutting force, cutting temperature and cutting ratio in Ai-Mg2Si alloys.抄録全体を表示PDF形式でダウンロード (2390K) -
津田 展宏, 加藤 敬, 沢辺 雅二1982 年 48 巻 6 号 p. 734-739
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーOne piece compound parallel spring with reduction levers for a measurement of linewidths of LSI photomasks has been manufactured, with dimensions as follows: block lengths; 270 mm×170 mm, thickness; 30 mm. After machining i. e. drilling, spot facing of a raw stock, and vacuum heat treatment to remove any mechanical distortion of the block, a spring system is formed by means of a CNC wire cut electric discharge machine taking as much as 98 hours. A force "F", which should be applied to the levers to maintain equilibrium after a displacement "d" of an output member from a zero force equilibrium is expressed theoretically; this expression gives F=10.56 N when d=10 μm agreeing well with the experimental measurement; F=7.3 N. The ideal ratio; 0.125 also coincided well with the real one which is 0.122. Pitch and yaw in the direction of movement over 50 μm are so small that a clear distinction between air fluctuation and spring deflection was difficult even if an autocollimator is used to detect them. This performance is higher than that of NBS micropositioning stage made of invar whose pitch is; 0.8 arcsec. and yaw; zero arcsec., because this spring structure described here consists of the compound parallel spring to reduce the pitch motion, and yaw movement compensation mechanism with a high degree of symmetry.抄録全体を表示PDF形式でダウンロード (1044K) -
坂本 和平, 仙田 修1982 年 48 巻 6 号 p. 740-744
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーこれまで述べたように,当装置はシミュレータによって装置自体の動作における誤差は,装置による系統誤差と測定における偶然誤差の和から15mm程度と推定された.したがって,走行距離(実測距離)を20m以上に設定すれば所期の目標である0,1%の精度で測定することができる.
以上の事項から,当装置によって自動車タイヤの有効周を必要な精度で測定できることが確認された.抄録全体を表示PDF形式でダウンロード (932K) -
特殊不等分割工具および高剛性工具による真円度の改善佐久間 敬三, 清田 宏1982 年 48 巻 6 号 p. 745-750
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーThe forming mechanism and the effect of toolspacing angles of multi-corner profiled holes are studied theoretically and experimentally, using a variety of spacing type of reamers. In case of the uneven-spaced tool, the imaginary number of teeth (Zi=360°/αL), which is given by 360° divided the G. C. M. angle (αL) of neighboring angles among the teeth, has significant influence on the multicornered shape of machined hole section. Theoretically the imaginary number of teeth and the number of corners of profile generated by the Zi-teethed tool increase, as the G. C. M. angle become smaller, but in practical reaming, special unevenspace, six-teethed tools, having more than 12° of αL, can act as Zi-tool. In particular, the tool with αL=15° usually acts as the even-space, twenty-four teethed tool under various cutting conditions and twenty-five cornered shape is produced, and variable component of burnishing torque is small during cutting. The roundness error of the shape is much smaller than that of the even-spaced tool. The rigidity of tool shank also affects on the improvement of roundness error. When using the high rigidity tool, multi-cornered profile is not observed on the profile-diagram recorded by the roundness measuring instrument.抄録全体を表示PDF形式でダウンロード (1361K) -
単結晶の微視的変形破壊機構に関する研究(第4報)吉岡 正人1982 年 48 巻 6 号 p. 751-756
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーThis study is in the series of researches concerned with the mechanism of micro-deformation or fracture in brittle materials. In this paper, stress is analyzed with finite element method in the case of indentation onto the surface of MgO single crystal. Matrix is developed for the calculation which relates stress to strain in the slip process of MgO crystal. Microscopically deformed (slipped) zone is obtained from the analysis. Furthermore, it is discussed where the probability of crack growth is the highest. The main results obtained are as follows: (1) Slipped zone is constructed with a pair of slip bands which intersect with the indented surface at 45°. Its shape is approximately in accordance with experimentally observed one. (2) In the two bands just mentioned, slip occurs in the opposite directions. (3) Cracks are most likely to grow in the region between two parallel slip bands.抄録全体を表示PDF形式でダウンロード (1061K) -
切れ刃内の温度分布と熱応力分布井原 透, 白樫 高洋, 臼井 英治1982 年 48 巻 6 号 p. 757-763
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーBased upon a measured distribution of tool-chip interface temperature in continuous turning, the transient distributions of temperature and thermal stress within the cutting edge, which may appear during the heating and cooling in interrupted turning operation, are obtained through the three dimensional finite element calculation. The calculated transient temperature is verified to be in good agreement with the temperature obtained experimentally. On the contrary to the common consent, it is found for tungsten carbide tool that the surface layer of the tool-chip contact zone is not cooled down lower than the interior even by water cooling, due to the higher rate of heat conduction within the cutting edge. Two fields of tensile thermal stress, which is almost uniaxial and parallel to the cutting edge, are found to be induced along the side and front cutting edges respectively. The tensile stress is caused mainly by the temperature distribution in planes parallel to the rake face, but not caused by the simple surface cooling as mentioned before. The magnitude of the calculated stress is also proved experimentally to be true and so small (about 300 MPa) compared with the fracture strength of tungsten carbide and the induced impact stress as well that it may not have a direct concern with the initiation of the thermal crack and the edge chipping.抄録全体を表示PDF形式でダウンロード (1186K) -
北嶋 克寛, 吉川 弘之1982 年 48 巻 6 号 p. 764-771
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーIn order to develop a general-purpose machine design system, the following fundamental researches are requisite. The first is about a model which represents a general feature of machine structure. Then, we must extract rules from the model, which govern important parameters in every design stage. And finally, it is to develop algorithms which aid man's design activity, based on those above rules. In the present paper, the second aspect is mainly dealt with. Conditional equations of machine structure are derived, which are dependent upon the characteristic feature of the model; especially network aspects of it. These conditional equations give the relationships between dimensions in a machine; length, height and diameter of elements and positions between them which are static or dynamic, that is, motion. Further, when they have no dimensions of dynamic position, equations of static dimension are defined as an expanded concept of them. These results will be applied to the above mentioned third aspect to develop a general purpose CAD successfully.抄録全体を表示PDF形式でダウンロード (1268K) -
動力計の構造および線形性について谷 泰弘, 畑村 洋太郎, 長尾 高明, 竹中 規雄1982 年 48 巻 6 号 p. 772-777
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーIn this paper the examples of three-component dynamometers manufactured by using the structure of parallel beams are described. And the deformation and the strain distribution of the onecomponent cantilever dynamometer that is the fundamental shape of the parallel-beam dynamometer are analyzed by Finite Element Method. The main results are as follows: (1) If strain gauges are put on the boundary points between the parallel-beam part and the supporting part, the strain output is the largest. The distribution of normal strain in parallel-beam region is in a straight line. (2)If a Wheetstone bridges circuit is constituted of gauges put on those points symmetrically, the cross sensitivity comes to be extinct. (3) The deflection of the loading point is very small and the strain output per unit displacement is larger than that of a ring dynamometer. (4) The parallel-beam dynamometer is designed easily and a three-component dynamometer can be made compactly.抄録全体を表示PDF形式でダウンロード (926K) -
大塚 二郎, 関根 文太郎, 中村 彬, 萩原 博, 田中 功一1982 年 48 巻 6 号 p. 778-780
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (600K) -
田中 佐1982 年 48 巻 6 号 p. 781-787
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1200K) -
川瀬 武彦1982 年 48 巻 6 号 p. 788-793
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (735K) -
伊東 誼1982 年 48 巻 6 号 p. 794-800
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1279K) -
山本 晃, 賀勢 晋司1982 年 48 巻 6 号 p. 801-806
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1086K) -
神保 泰雄, 高野 政晴1982 年 48 巻 6 号 p. 807-808
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (295K) -
下間 頼一1982 年 48 巻 6 号 p. 809
発行日: 1982/06/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (173K)
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