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後続誌
50 巻, 9 号
選択された号の論文の26件中1～26を表示しています
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南 茂夫1984 年 50 巻 9 号 p. 1345-1351
発行日: 1984/09/05
公開日: 2009/06/30
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熊原 忠士1984 年 50 巻 9 号 p. 1356-1362
発行日: 1984/09/05
公開日: 2009/06/30
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青木 道宏, 池田 宏明, 山本 博1984 年 50 巻 9 号 p. 1363-1368
発行日: 1984/09/05
公開日: 2009/06/30
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寺町 康昌1984 年 50 巻 9 号 p. 1369-1373
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーパーソナルコンピュータを計測の自動化に応用する場合の目的,利点,欠点及びいくつかの例について述べた.現在,パーソナルコンピュータは能力の高度化という面から16ビット中心へという動きと,小型化を目的としてCMOS化されたハンドヘルド型への2つの流れが存在し,その2つとも計測の自動化に際して大きな意味をもっている.又,メモリーが安価になってきたため,アナログデータレコーダ代わりに利用することも可能になってきた.しかし,機械関係でパーソナルコンピュータを使っている方から受けた御相談では,パーソナルコンピュータ本体側に問題があるわけではないのに,センサや信号線がモータや大電流を流す線のすく近くにあるため起こる誘導対策の方が大きな問題であった.取り扱う対象によって,特有の問題が発生することを考慮した上で,目的に合致したパーソナルコンピュータとプログラム言語を利用すれば大きな効果があがると考えられる.応用例としてあげた,単一モード光ファイバ温度計及びレーダ用超高速2次元データ収録装置の開発は東京工業大学総合理工学研究科,武者・関根研究室において開発されたものである.抄録全体を表示PDF形式でダウンロード (1369K) -
藤森 威1984 年 50 巻 9 号 p. 1374-1379
発行日: 1984/09/05
公開日: 2010/02/16
ジャーナル フリー音響精密計測におけるLAの一例として,NOVAミニコンピュータを用いた汎用音響計測システムとMDS-800マイクロコンピュータを用いた音圧校正システムを紹介した.
これらのシステム全体としては,RIPS大形計算機システムー汎用ミニコンピュータシステムーマイクロコンピュータ利用の専用音圧校正システムといった階層構造を持ち,計測手法,.データ処理法に応じた対応を行うことができる.現在,サブシステム間のデータ転送にはモデムインタフェースを用いているが,今後の計測手法の高度化に伴って,より高速で標準的なデータ転送手法が必要と考えている.抄録全体を表示PDF形式でダウンロード (1034K) -
森本 雅樹1984 年 50 巻 9 号 p. 1380-1385
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーLAってなんだろう?RA(Radio Astronomy)が相手だったらきっと低雑音アンプ(Lownoise Amplifier)にちがいない.いや,ロスアンゼルスだ.それともラブアフェアかな?なんて想像するより,電波望遠鏡の話をしてどのLAだか判断していただくことにしよう.抄録全体を表示PDF形式でダウンロード (1236K) -
狩谷 哲生, 飯島 真, 西島 洋一郎1984 年 50 巻 9 号 p. 1386-1393
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1474K) -
データベースサービスを中心とした現状と展望瀬谷 重信1984 年 50 巻 9 号 p. 1394-1399
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1182K) -
鈴木 茂正, 井田 靱性, 萩元 佳雄, 橋本 等, 広保 稔1984 年 50 巻 9 号 p. 1400-1406
発行日: 1984/09/05
公開日: 2009/06/30
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小笠原 宏臣, 小島 秀芳1984 年 50 巻 9 号 p. 1407-1412
発行日: 1984/09/05
公開日: 2009/06/30
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松尾 光恭, 安井 武司, 稲村 豊四郎, 松村 正三1984 年 50 巻 9 号 p. 1413-1418
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーA new test method is developed to evaluate the ultimate values of temperature rise of a machine-tool structure based on a short period data obtained during its warming-up run. In this method, a machine-tool structure is modelled by the finite element method and analyzed in terms of the eigenvalue problem of the thermal equation. This yields the characteristic curves of the temperature rise of the structure in the form that they contain unfixed parameters, the values of which depend on the strength of heat sources. Then by determining the parameters so that the characteristic curves fit the measured ones obtained during the warming-up run, one can identify the strength of heat sources and then the ultimate values of the temperature rise with regard to any point in the structure. Experiments are carried out to verify the effectiveness of the method.抄録全体を表示PDF形式でダウンロード (1328K) -
可動体構造と制御法松田 隆一, 中川 三男1984 年 50 巻 9 号 p. 1419-1425
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリー制御電磁石による非接触直進案内可動体の支持法を検討し以下の結果を得た.
(1) 直進案内磁気浮上における電磁石配置条件を導き,これに基づいて電磁石数の少ない構造を検討した.実用的な一例として,台形溝に対向する6個の電磁石を有する構造を設計した.
(2) 入出力が複雑に関係した制御系である6個の電磁石による可動体支持機構に対し,最適レギュレータ制御則を適用し,支持剛性に着目した合理的な設計ができることを示した.
(3)電磁石の特性を,基準のすきまと電流のまわりで線形化して得た可動体の運動方程式と回路の式は十分な妥当性を有することを個別制御による実験によって確かめた.抄録全体を表示PDF形式でダウンロード (1297K) -
振動締付けの効果堀 隆一, 石川 憲一, 横山 恭男1984 年 50 巻 9 号 p. 1426-1431
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーThe purpose of this paper is to investigate the precise screw tightening by means of harmonic vibration. In this report, the findings of the investigation on the vibration tightening in which the torsional vibration is superposed upon the motorwrench tightening with a D. C. servo-motor are given. The main results are as follows: (1) The torque coefficient is decreased by means of the reduced equivalent coefficient of kinetic friction by vibration during vibration tightening. (2) The reduction of scattering of the torque coefficient as the results of the vibration tightening under lubrication in addition to the lubricant effect of various oils is clear and the amount of scattering becomes stable. (3) The torque coefficient is reduced remarkably under resonance condition in vibration tightening. By this study, it is proved that this vibration screw tightening has the possibility of effective tightening.抄録全体を表示PDF形式でダウンロード (1476K) -
酒井 保男, 緒方 省三, 淺井 昭一1984 年 50 巻 9 号 p. 1432-1438
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーThe chatter marks which may be sometimes generated in grinding or ultra-precision machining process can be graded by this instrument which is able to measure both geometrical waviness and fluctuation of glossiness from surface. In this instrument an optical lever and phototransistors are utilized for detecting the waviness and the fluctuation of the glossiness, so that measuring data can be collected accurately and reliably. The data of measured waviness patterns are processed by the computer, so that the influence of the fluctuation of the glossiness can be eliminated. Several test samples in the grinding and the ultra-precision machining process are described and also the samples of detecting the waviness within 0.01 μm are shown.抄録全体を表示PDF形式でダウンロード (3444K) -
樋口 俊郎, 水野 毅, 相川 登1984 年 50 巻 9 号 p. 1439-1444
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーA totally active magnetic bearing system is composed of four subsystems: three with one degree of freedom related to translational motion and one with two degrees of freedom related to rotational motion. One of the major problems associated with the design of magnetic bearing control systems is that the two rotational motions interact on each other by gyroscopic effects caused by spinning of the rotor, which need not be considered in designing electromagnetic levitation systems. Therefore an instrument for experimenting on controls of the gyroscopic coupled system is developed in this paper. The mechanism of the instrument resembles the mechanism of the two-axis gyroscope; a feature of the instrument is that the motions of the gyro are controlled by attractive forces of the electromagnets. Thus the instrument has the same dynamics as the subsystem related to the rotational motions of the magnetic bearing systems. The control system of the instrument is designed by utilizing the optimal regulator theory. The effectiveness of the optimal regulator is experimentally studied.抄録全体を表示PDF形式でダウンロード (2847K) -
清水 茂夫, 井沢 実1984 年 50 巻 9 号 p. 1445-1449
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーボールスプラインにラジアル荷重とモーメント荷重およびトルクの合成荷重が作用した場合に対し,基本動定格荷重の計算式を導き,さらに種々の影響要因に対して計算を行い検討を加えた.その結果,以下の事項を明らかにできた.
(1)ボールスプラインの基本動定格荷重は,ラジアル荷重の大きさと方向,玉とボール溝の形状合致程度および外筒軌道面端部の丸み半径によってかなり影響されるが,軸ストロークに対してはほぼ一定値をとる.
(2)外筒軌道面端部に付与する丸み半径は,玉径近傍の値がよい.
(3)ラジアル荷重のほかにモーメント荷重やトルクが作用する場合,ボールスプラインの基本動定格荷重は著しく減少する.抄録全体を表示PDF形式でダウンロード (774K) -
学習制御方法による防振高上 輝雄, 神保 泰雄1984 年 50 巻 9 号 p. 1450-1456
発行日: 1984/09/05
公開日: 2010/02/16
ジャーナル フリーIn the previous paper, it is stated that efficiency of an active vibration isolation system depends on the property of the used seismometer, especially on its phase characteristics. In general seismometer's information on the phase is not so good as that of the amplitude and period. A learning control method uses only these higher reliable informations on the amplitude and period. On the base of the information of the period, a micro-computer searches the optimal amplitude and phase of control signal through trial and error method. Some remarkable results are obtained. In the case of the employment of a seismometer which has the nominal utility range of 2 to 100 Hz, vibration transmissibilities are 0.5 at 0.3 Hz and 0.1 at the resonance. The obtained results indicate that this method is very promising.抄録全体を表示PDF形式でダウンロード (5271K) -
成形法について白鳥 英亮, 松尾 政弘, 安藤 利治, 石川 義雄, 勝又 欽一1984 年 50 巻 9 号 p. 1457-1462
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper describes an experimental study on the method of producing a plastic bolt-screw reinforced with continuous fibers arranged along the shape of screw thread. Hot rolling was selected for the forming of FRP bolt-screw from productive point of view, and M 8×1.25 thread was choosen for the size of the screw thread based on the practical use. The structure of bolt rod which gave a good arrangement of the fibers along the shape of screw thread by hot rolling was experimentally found out. It consists, from center towards surface, of a uniaxially fiber-reinforced central part, a five-layered cylindrical shell of resin-plated cords, a layer or resin-chopped strand composite, a coat of resin mono-layer, and a shell of 45 degree cross-wove cloth of plated cords.抄録全体を表示PDF形式でダウンロード (1258K) -
加工液における化学作用の加工特性への影響元谷 和雄1984 年 50 巻 9 号 p. 1463-1468
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリー本加工法における加工液の化学的作用の加工特性に与える影響について,フェライトの硫酸銅溶液中における反応を調べる実験,および硫酸濃度の異なる加工液による加工特性を求める実験を行い,実験の範囲内で次のようなことがわかった.
(1)硫酸銅溶液中でフェライトは分極電位に対してイオン結晶としての特徴のある特性を示し,本加工法で砥石を電着するための電圧においてもフェライトは溶解していることがわかった.
(2)溶解現象が加工中に存在していることから,本加工法は機械的作用と化学的作用からなる複合加工と考えられる.また加工量特性にはそれら二つの作用の複合による相乗作用の現象を示す特性がみられる.
(3)加工量特性に現れる相乗作用は砥石の砥粒粒径を小さくすると粒径の大きい砥石の場合に比して硫酸濃度の小さい加工液において相乗作用が現れる.
(4)加工量特性に現れる相乗作用はその加工表面にも影響し,表面粗さ,加工層を小さくする.抄録全体を表示PDF形式でダウンロード (1380K) -
焼結ダイヤモンド工具の熱化学的損傷機構飯島 昇, 竹山 秀彦, 柏瀬 雅一1984 年 50 巻 9 号 p. 1469-1474
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーThe analysis of the mechano-physical wear mechanism of sintered diamond tool in the 1st report of this study revealed complexity of the mechanism in the tool deterioration. This paper treats with the experimental analysis of the thermo-chemical mechanism of the tool deterioration. The experimental fact that the tool life can be prolonged up to hundred times in wet cut compared to that in dry cut when machining ceramics with the sintered diamond tool has suggested various experimental techniques to clarif y the mechanism of tool deterioration. Eventually it has been concluded that the transformation of diamond into graphite, which is accelerated by the residual cobalt within the sintered diamond at higher temperatures, is detrimental to the tool life.抄録全体を表示PDF形式でダウンロード (1906K) -
横川 宗彦, 横川 和彦1984 年 50 巻 9 号 p. 1475-1480
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーThe effects of nickel layer coating abrasives on grinding performance of resin bonded CBN grinding wheel are revealed. Effects of nickel coat were studied by performing fundamental and grinding experiments, and following results were obtained. (1) Nickel coat prevents resin bond from being deteriorated by heat and keeps the capability of abrasive retention. (2) The surface unevenness of nickel coat increases the bonding between the abrasives and resin bond, and improves the capability of abrasive retention. (3) Even when a part of each abrasive is cracked out, nickel coat can still hold the remaining part of the abrasive. (4) Using nickel coat, care must be taken to improve adhesion of nickel coat not only to bond, but also to CBN. From these results, it is clear that grinding performance is influenced considerably by nickel coat. It is concluded that since high grinding performance is realized by improving abrasive retention, it is important to coat abrasives with material which has a very low thermal conductivity, to provide the coating surface with sufficient unevenness and to strengthen adhesion between CBN and coat.抄録全体を表示PDF形式でダウンロード (2013K) -
微視的残留せん断応力を考慮した解析若林 三記夫, 中山 守, 玉村 謙太郎1984 年 50 巻 9 号 p. 1481-1487
発行日: 1984/09/05
公開日: 2010/02/16
ジャーナル フリーIn a ground layer, the distribution of residual strains measured by X-ray is depend upon the grinding direction. The distribution is owing to a microscopic residual shear stress τZXW produced. by the uni-directional machining. This report describes the results of an experimental analysis considered the stress τZXW in the ground layer. The results obtained are as follows. The normal residual stresses σXV and σYV shift to the tensile stress side with increasing wheel depth of cut, work speed and peripheral wheel speed. The stress τZXW increases with increasing work speed and the wheel depth of cut and decreases with increasing peripheral wheel speed. The depth of penetration of τZXW in the workpiece agrees with the depth where σXV and σYV, are the largest in the tensile stress side. It became clear that the depth of mechanical action by abrasive grains is shallower than the one of thermal action. The increase in additive sulfur content in grinding fluid results in decrease in the tangential grinding force Ft, the ratio Ft/Fn, the stress σXV, σYV and τZXW.抄録全体を表示PDF形式でダウンロード (1279K) -
断続切削時の初期欠損(第1報)平尾 政利, J. TLUSTY1984 年 50 巻 9 号 p. 1488-1493
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーChipping of a cutting tool is one of the most serious problems in milling operation. The mechanism of initial chipping is not sufficiently clarified. This report analyzes the origin of initial chipping by separating the cutting edge into entry and exit zone. Initial chipping is observed only on the exit zone and the cumulative probability shows a Weibull distribution. The chipping generated on the exit zone is affected by the end form of the chip. That is, generating boots-type chip, chipping is generated, but with a spindle-type chip, chipping is not generated. The chip form is affected by the end shape of the workpiece and the shape affects the magnitude of the negative shear zone. Finally chipping is affected by the negative shear forces caused by the negative shear. Simultaneous cutting of soft and hard metal decreases chipping probability, because this setting decreases the negative shear forces.抄録全体を表示PDF形式でダウンロード (1321K) -
後藤 崇之, 柴田 順二1984 年 50 巻 9 号 p. 1494-1500
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーIn order to utilize grinding fluid most efficiently, it is essential to charge the contact area between a grinding wheel and workpiece sufficiently with grinding fluid. However, it has been left uncertain how grinding fluid should be delivered for the purpose. This paper, as the first step to find out the optimum way on delivering grinding fluid, discussed processes for grinding fluid leaving the nozzle to reach the contact area. The results obtained here are summarized as follows. (1) Validity of the theory proposed by Trmal was verified here, i. e. the fluid flow applied from a nozzle can break through the layer of air flow around a rotating grinding wheel when the former momentum exceeds the latter one. (2) Grinding fluid, which breaks through the layer of the air flow to come in contact with wheel surface, adheres to the surface and under certain conditions penetrates into porous material of the grinding wheel. Then, it is carried into the contact area by the wheel rotation. (3) Though quantitative comparison between the adhesion and the penetration is not clear, the carrying mechanism of the grinding fluid into the contact area would be mainly dominated by the adhesion.抄録全体を表示PDF形式でダウンロード (3285K) -
碓井 雄一, 坂田 興亜1984 年 50 巻 9 号 p. 1501-1506
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーA main spindle of a lathe with center distance of 550 mm was assembled using adhesive glue. The lathe had gaps filled with adhesive between outer rings of bearings and spindle sleeves, and between the sleeves and a headstock. When the spindle was bonded, it was supported by micrometer heads to adjust its position. Following assembling accuracy was obtained: parallelism between the spindle and the carriage motion was 6-9.5 μm/300 mm, and height difference between the head and the tail stocks was 8-13 μm. Stiffness of the spindle was 13, 20 and 22 nm/N for the conventionally assembled spindle, the one assembled using adhesive with low and high rigidity, respectively. A creep deformation of 6 μm occurred to the spindle assembled with low rigid adhesive under 170 Nm moment, but there was not such a problem to the spindle with high rigid adhesive. Dynamic compliances of the conventional spindle and the spindle bonded with high rigid adhesive were quite equal, though that of the spindle with low rigid adhesive was higher than the others at 200 Hz resonance. Results of numerical analyses showed that static compliance increased gradually and dynamic compliance decreased rapidly as the adhesive layer became thicker. If adhesive with less stiff and less viscous characteristics was used, dynamic compliance could be improved greatly with slight increase in static compliance.抄録全体を表示PDF形式でダウンロード (1408K) -
ダイヤモンド砥粒のじん性が切削性能に及ぼす影響上田 隆司, 花見 真司, 山本 明1984 年 50 巻 9 号 p. 1507-1511
発行日: 1984/09/05
公開日: 2009/06/30
ジャーナル フリーInfluence on honing performance is investigated about grain's toughness and operating conditions such as honing speed, crosshatch angle and honing fluid. Workpieces are three types of ceramics sintered under atmospheric pressure, that is, silicon nitride Si3N4, silicon carbide SiC and alumina Al2O3. Moreover, some discussions are had to confirm how effective the honing operation is for machining of ceramics. The results are as follows. Influence of grain's toughness on its cutting ability is a little for Al2O3 with good machinability. But, for SiC and Si3N4 with poor machinability, diamond grains having high toughness should be used. In order to restrain the wear of cutting grains, the honing speed and the stone pressure should be decreased. The large crosshatch angle makes it possible to obtain high productivity, because the cutting edges collide against cutting tracks with a large angle. The characteristic and the temperature of the honing fluid are important factors to use diamond sticks effectively.抄録全体を表示PDF形式でダウンロード (1116K)
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