巻号一覧
59 巻, 3 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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稲川 幸之助1993 年 59 巻 3 号 p. 373-376
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (2682K) -
小林 正樹1993 年 59 巻 3 号 p. 377-380
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (4005K) -
黒川 英雄1993 年 59 巻 3 号 p. 381-384
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (4504K) -
橘内 浩之, 井上 滉1993 年 59 巻 3 号 p. 385-388
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (4112K) -
青山 昇1993 年 59 巻 3 号 p. 389-392
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (4086K) -
重松 洋一1993 年 59 巻 3 号 p. 393-398
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe forward and inverse kinematics of a walking machine are modeled and analysed in a unified manner using the motor algebra. First, the velocity motor of a link is defined to specify the motion of the link. Then, by changing the reference point and the frame of the velocity motor of each link to other ones consecutively along the link-pair graph, the independent closed link conditions are derived, which are linear with respect to the joint angle velocity, the velocity of the trunk, and the angular velocity of the trunk. The inverse kinematics can be solvable if the image of an induced linear map of the velocity and angular velocity of the trunk belongs to the image of an induced linear map of the joint angle velocity. By a numerical analysis of the induced linear spaces of the inverse kinematics which models a walking machine with a planar pantograph leg whose toe contacts the ground, independent solutions of the velocity and angular velocity of the trunk are obtained, each of which has the corresponding joint angle velocity.抄録全体を表示PDF形式でダウンロード (742K) -
Navier-Stokes 方程式の適用性に関する考察牧原 光宏, 笹倉 久仁彦, 永山 昭1993 年 59 巻 3 号 p. 399-404
発行日: 1993/03/05
公開日: 2010/01/20
ジャーナル フリー微小管を対象とした液体流れ測定法と微小管における液体流れを実験的に検討し, 以下の結果を得た.
(1) 微小管出口に接続した流量測定管内のメニスカスの移動から流量を算出する測定法を提案し, 数十pl/sの超微量流量測定を実現した.また, 微小管入口に接続した拡大槽内圧力による微小管での圧力損失測定法において, 測定誤差は4kPa以下であることを明らかにした.
(2) シリコンオイルにおいて, 動粘度2.6×10-6m2/sに対し管径4.5μmまで, 管径11.2μmに対し動粘度4.3×10-4m2/sまで流量と圧力損失は比例関係にあることを明らかにした.
(3) 上記の従来より管断面積が微小な領域での高粘度の液体の流れ解析にN-S方程式が適用できることを明らかにした.抄録全体を表示PDF形式でダウンロード (2916K) -
河井 元良, 林 巌, 岩附 信行1993 年 59 巻 3 号 p. 405-410
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーTo realize an actuator with many degrees of freedom which moves like a human wrist, a spherical motor with three-degree-of-freedom is tried, the spherical body of which is driven by ultrasonic linear actuators, and consequently, the spherical motor has no limitation on the position of its rotational axis in principle, and can rotate around an arbitrary spatial axis at an arbitrary speed. The spherical body of the motor is a steel bearing ball of 76.2mm in diameter. The six ultrasonic linear actuators are placed at every sixty degrees on the horizontal outer circumference of the ball; a pair of two actuators lying symmetrically regarding the center of the ball induce a rotational torque. In an experiment the ball rotated around the vertical z-axis at 15rpm, and also rotated around other spatial axes adjusting the outputs of the three pairs of actuator.抄録全体を表示PDF形式でダウンロード (2554K) -
機械的ヒステリシス試験ユニットによる影響評価寺田 英嗣, 林 輝1993 年 59 巻 3 号 p. 411-416
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe mechanical hysteresis and backlash on reduction gears for positioning mechanism, have significant effects on dynamic performances itself. So the Non-Backlash Reducers have been developed to eliminate the backlash, but they are not able to be eliminated the effects of the mechanical hysteresis. So that the hysteresis must be analyzed to improve these dynamic performances. In this report, at first the special rigid coupling with mechanical hysteresis of arbitrary amount are developed, so called “Mechanical Hysteresis Test Unit”. The magnitude of mechanical hysteresis are defined using the developed unit. Then the evaluation methods of mechanical hysteresis influences are proposed for dynamic performances. And the hysteresis characteristics are tested using positioning mechanism with mechanical hysteresis test unit. It is proved that the hysteresis have large influences on these dynamic performances.抄録全体を表示PDF形式でダウンロード (778K) -
測定結果と考察塚田 忠夫, 于 大海, 橋本 裕之1993 年 59 巻 3 号 p. 417-422
発行日: 1993/03/05
公開日: 2010/01/20
ジャーナル フリーThis paper presents the technique to get circularity, eccetricity and its orientation of eccentric cam shaft by applying the iterative least-square method to measured data. At first, it is shown that the off-set error of probe is computed from data measured under the condition of eccentricity e≥1.5mm by means of the new technique. Although the circularity grows worse by the off-set error of probe, this circularity is corrected by using the technique to compensate the off-set error. On the other hand, it is made clear that the eccentricity and its orientation are precisely obtained by the iterative least-square method.抄録全体を表示PDF形式でダウンロード (799K) -
4軸水平多関節形ロボットの制御への適用古屋 信幸, 松原 正知1993 年 59 巻 3 号 p. 423-428
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーIn the previous report, an algorithm to control the motor motion curve with software servo system was proposed. By the algorithm, any motion curve, such as produced with cam curves, was realized. It was applied practically to 1 axis DD motor indexing table, and some experimental results were reported. In this report the motion control algorithm is applied to 4-axes SCARA type robot control with software servo system, in PTP (point to point) and CP (continuous path) control mode. The software servo system has become main control system in robot servo motor system. To apply the algorithm to motor control in software servo system, any motion curve in multi axes robot is realized. Some experimental results, such as control accuracy in PTP motion and in CP motion measured in 4-axes SCARA type robot are reported, and by the experimental results, the algorithm is proven to be well applied to multi-axes industrial robot control with software servo system.抄録全体を表示PDF形式でダウンロード (738K) -
蔡 玉栄, 林 輝1993 年 59 巻 3 号 p. 429-434
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe Linear Approximated Equation (LAE) of rotational vibration of a spur gear pair and its analytical solution of vibration have been developed by this research. In this report, by considering that the analytical solution gives the common relation between the vibration and gear dimensions (inertia, contact ratio, variable stiffness), running condition (rotational speed, load), tooth profile error of gear pair, the evaluation method of tooth profile error correspond to rotational vibration is developed. The average vibration of low and high speed running gear are easily estimated from the product of average dynamic factor by the amplitude of equivalent error. According to the magnitude of average vibration, the accuracy grade of profile error is decided. The validity of this new accuracy grade is confirmed both by the comparison with usual gear accuracy standard and the result of running experiment.抄録全体を表示PDF形式でダウンロード (1066K) -
井原 透, 小川 操, 伊東 誼1993 年 59 巻 3 号 p. 435-440
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーNo matter how contents described in a given part drawing may fairly complex, the experienced process engneer generally judges, for instance, the difficult-to-machine portion, and also produce the process plan in short time. This is supposed to show something relationship between the difficulty of process planning and the machine portions in the drawing. This paper describes the directed graph representation for the engineer's decision making process and its analysis, and the application of the difficulty of machine portions to the judgement function for the difficulty of process planning, which is a subsystem in CAPP based on the flair.抄録全体を表示PDF形式でダウンロード (979K) -
等主曲率線, 曲率極値線による曲面の解析東 正毅, 近藤 学1993 年 59 巻 3 号 p. 441-447
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリー等主曲率線, 曲率極値線の導入により, 曲面固有の性質を視覚化し, その基本的性質について以下のことがわかった.
(1) 従来の曲率線では, 主曲率の方向しか表せなかったが, 等主曲率線は, 2つの主曲率の値を等高線で表せ, さらに, 等高線の間隔で曲面の3次成分である主曲率の変化が分かり, 曲面の曲がり具合が分かる.
(2) 曲率極値線は, 等主曲率線の尾根・谷線であり, この線に対し曲面は3次成分まで対称となる.従って, 臍点は2つの曲率極値線が接する点となり, 臍点回りの曲率線のパタンは, 曲率極値線の現れ方に依存する.
(3) 曲面の形状は, 曲率線等主曲率線のパタンにより回転面, 法線スィープ面, 楕円面の3つに分類できる.
次に, 美的意匠曲面の評価を行う美的評価線と以上の曲面の基本的性質の関係を解析することにより, 以下のことが明らかになった.
(1) 美的評価線は, 主曲率の値とその変化の具合により曲がり方が決定し, 曲率線のパタンの影響は小さく等主曲率線のパタソに依存する.
(2) 美的評価線は, シルエットパタン, 格子映像線の順に形状に敏感であり, 等ハイライト線は形状により大きく変わらない.また, 曲率極値線が複数現れたりうねりがあると, この部分に美的評価線の乱れが生じる.
以上の曲面の基本的性質は, 美的な評価にとどまらず, 自由曲面の加工, 測定, 解析 (強度, 流体ほか) など曲面の曲率が大きく影響する場合に, 幅広く応用できると考えられる.
今後は, 等主曲率線のパタンが曲面の美的評価線にどのように影響するかを定量的に解析し, デザイナの感覚に基づく曲面の創成法への展開を図る.抄録全体を表示PDF形式でダウンロード (1507K) -
上田 隆司, 杉田 忠彰1993 年 59 巻 3 号 p. 448-454
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe chip formation energy, which is consumed only to make chips by brittle fracture in grinding, honing and superfinishing, is investigated theoretically and experimentally. The following model is assumed that the surface of the work material consists of grains in shape of a cube and the brittle fracture takes place at the grain boundary. Work materials used in experiments are Al2O3, SiC and Si3N4 which are sintered under atmospheric pressure, and SiO2. The scratching test is also carried out in order to obtain the chip formation energy of ceramic materials, and the strong relation is observed between the chip formation energy and the energy release rate of the ceramic. The chip formation energy obtained from experiments are compared with that from the scratching test.抄録全体を表示PDF形式でダウンロード (1021K) -
橋本 洋, 竹田 次郎, 今井 健一郎, ケネス ブレーデル1993 年 59 巻 3 号 p. 455-460
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーIn order to clarify pragmatic aspects of shear-mode grinding, grinding processes and characteristics of ground surfaces were investigated. First, grinding experiments were carried out, using metal bond diamond wheels, resinoid bond diamond wheels and BK7 specimen. Corresponding to the number of infeed, in shear-mode grinding with metal bond wheels, the normal grinding force increases linearly and later reaches a stable state which shows a constant grinding force and no further residual stock removal. But with resinoid bond wheel no stable state can be found. Next, a set of surfaces of BK7 was fabricated by shear-mode grinding, another set by polishing and then the sets were compared. Two techniques were used to evaluate ground glass surfaces : rate of etch and super microindentation. As the results, Etching rate of ground surfaces is “higher” than that of plolished surfaces for the first 0.2 μm. And it is found by super microindentation tests that the ground specimen appears “softer” than the plolished one for the first 0.1 μm.抄録全体を表示PDF形式でダウンロード (5244K) -
寸法精度及び表面粗さに対する効果松井 敏, 堀内 毅1993 年 59 巻 3 号 p. 461-466
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThis paper presents a new dressing method, rotation type single point diamond dressing (RSPD dressing), in which a single point diamond dresser is rotated and fed to the direction of a wheel axis. The paper compares the dressing characteristics by this method with those of conventional single point diamond dressing (CSPD dressing). Main results obtained are as follows : (1) While the diamond edge form changes in CSPD dressing, it is almost maintained constant in RSPD dressing. (2) The wear of diamond edge in RSPD dressing is remarkably reduced compared with CSPD dressing. (3) In CSPD dressing, surface roughness changes as the wear of diamond edge. On the contrary, it is kept nearly constant in RSPD dressing because of the stability of the diamond edge form.抄録全体を表示PDF形式でダウンロード (2609K) -
三好 由記博1993 年 59 巻 3 号 p. 467-472
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリー切削加工中の加速度信号から, 切削の異常を示す特徴パラメータを抽出する方法, 各異常と特徴パラメータの関係, およびそれを使って異常を判定する方法について検討した結果, 以下の成果, 結論が得られた.
(1) 適応フィルタを使って加速度信号に自己回帰モデルを当てはめて, 自己回帰パラメータから減衰比, 固有振動数, およびモデル適合誤差を計算する方法を示した.
(2) 工具摩耗, 工具欠損, びびり振動に対応する減衰比, 固有振動数およびモデル適合誤差の自乗平均値を検討した結果, 異常を判定する特徴パラメータとして減衰比とモデル適合誤差の自乗平均値が適当であり, 固有振動数は不適切であることが分かった.
(3) 工具欠損が発生すると減衰比, モデル適合誤差ともに大きくなり, びびり振動が発生すると減衰比の一っが大きくなって, 他は小さくなる.
(4) ファジィ推論の手法を応用して, 減衰比とモデル適合誤差の変化を学習および判定して, 異常を判定する手法を作成した.作成手法により切削加工中の工具加速度信号から異常を判定可能であることが分かった.抄録全体を表示PDF形式でダウンロード (1151K) -
光熱モデルによる高分子材料加工のエネルギー収支計算伊藤 慶子, 森安 雅治, 平本 誠剛, 大峯 恩, 川澄 博通1993 年 59 巻 3 号 p. 473-478
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリー紫外, 可視, 赤外各波長の短パルスレーザを用いてポリイミドの除去加工を行い, これらの現象が光熱作用に基づくものと仮定し, この熱により温度上昇が起こり除去が達成されるというモデルから数値解析を行ない, 照射実験との比較を行った.
その結果各波長のレーザによる除去加工のしきい値エネルギー密度はいずれも材料の気化開始温度と密接な関係があることや, 繰返し周波数を変えた場合の加工現象の違いは蓄熱作用を考慮した数値計算結果とよく一致することがわかった.これより短波長レーザにおいても, 波長毎に決まる材料の光吸収係数や比熱などの熱特性はレーザ加工特性を決定する重要な因子であることが推察される.
また短波長レーザ加工の低熱損傷性, パルスごとの制御における優位性は, 深さ方向の温度分布やパルス休止時間中の冷却から理解でき, 蓄熱作用が起こりにくいためパルスごとの除去量が一定で, 繰返し周波数の影響を受けにくいことがわかった.
本理論より除去における繰返し周波数の影響はレーザ波長や材料により異なることがわかるが, 数値計算よりYAG第4高調波によるポリイミドの加工では, 1000pps程度の高繰り返し照射でも蓄熱の影響がなく, 低熱損傷加工が可能であることが予測できる.抄録全体を表示PDF形式でダウンロード (2168K) -
多々見 俊宏, 大竹 尚登, 吉川 昌範1993 年 59 巻 3 号 p. 479-484
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーアーク放電ブラズマジェットCVD装置により合成したダイヤモンド薄板を粉砕してダイヤモンド砥粒を作成し, それを用いて研削用砥石を試作しSKD11, FC20の研削実験を行うことにより, 以下の結果を得た.
(1) SKD11の研削実験においては, CVD砥粒は摩耗中心の挙動を示し, 研削動力がメタルボンド砥石を用いた場合, レジノイドボンド砥石を用いた場合ともにイレギュラーダイヤモンド砥粒, CBN砥粒よりも大きく, 非常に不安定である.
(2) FC20の研削実験においてCVD砥粒は破砕中心の挙動を示し, レジノイドボンド砥石を用いた場合の研削動力がイレギュラーダイヤモンド砥粒, CBN砥粒よりも安定し, イレギュラーダイヤモンド砥粒より大きくCBN砥粒より小さい値となり, 研削比はイレギュラーダイヤモンド砥粒と同じ値で, CBN砥石よりもわずかに大きい.抄録全体を表示PDF形式でダウンロード (5266K) -
庄司 克雄, 厨川 常元, 周 立波, 鈴木 英俊, 相原 秀雄1993 年 59 巻 3 号 p. 485-490
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーDiamond or CBN wheels are widely used now, but the application of these wheels in formgrinding is still limited due to the difficulty of truing. The subject of study is to achieve the technology of truing super-abrasive wheels for the form-grinding. In the present paper, a new technique using a cup-type GC wheel is proposed, and the truing device is designed and produced. This device can true a wheel into any convex shape, through envelope of lines made by the cup-type GC truer. The fundamental characteristics including truing efficiency and accuracy are also investigated by truing a CBN grinding wheel. The excellent truing performance of this device is demonstrated by grinding following truing.抄録全体を表示PDF形式でダウンロード (861K) -
中島 利勝, 塚本 真也, 小谷 修1993 年 59 巻 3 号 p. 491-496
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThis report deals with experimental analyses on the formation mechanism of ground surface profile under considering wheel surface topography in plunge grinding process. Main conclu-sions are as follows : (1) Ground surface profile of workpiece can be predicted under considering spring-back of grooves, meandering phenomenon and geometrical relationship between the theoretical cutting depth of abrasive grain and the actual depth of groove. (2) The meandering of cutting groove generated by an abrasive grain is occurred in the form of a roller with small vibrations. (3) After grinding, abrasive grains with low stiffness are remained on the wheel surface and abrasive grains with high or low stiffness are mixed under the wheel surface.抄録全体を表示PDF形式でダウンロード (1340K) -
熱変形の解析と抑制三島 望, 水原 清司, 岡崎 祐一1993 年 59 巻 3 号 p. 497-502
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe purpose of this study is to evaluate and control thermal deformations of a hydrostatic air spindle for ultraprecision machine tool. According to measurements, the spindle growth to Z direction amounts more than 6 pm in some cases. Such quantity of deformations is not negligible for ultraprecision machining, and counter plans are discussed in the paper. It reports that numerical analysis is effective for foreseeing thermal deformations. As a result of theoretical analysis based on thermo hydrodynamic lubrication theory, numerically calculated value of the thermal displacements fits well to measured value. So, it is able to foresee the deformations. And the thermal deformation can be decreased effectually by supplying air to the spindle in lower temperature than that of the thermostatic chamber, in which the machine is settled. And in addition, by changing the temperature of the air supply, due to the pasture of time from the beginning of the rotation, settling time of the deformations can be shortened evidently. As above, this study makes some proposals about thermal properties of a hydrostatic air spindle and proves them theoretically and experimentally.抄録全体を表示PDF形式でダウンロード (1067K) -
樫村 幸辰, 杉浦 宜修, 石川 明, 深沢 克也1993 年 59 巻 3 号 p. 503-508
発行日: 1993/03/05
公開日: 2010/01/20
ジャーナル フリーThe aim of this study is to develop a tool changing robot for turning operation. After tool wear has been detected, the robot changes a throwaway tip on a tool holder. In this case, a tool changing means a replacement of a corner of a tip, an inversion of a face of a tip and a supply of a new tip. In the experiments, the relation between the torque to clamp a tip to a tool holder and the torque to loosen a tip from a tool holder is clarified, and the clamping torque by the robot is chosen. And also, the characteristic of an adsorber which lifts up a tip by vacuum is investigated. From the experimental results, it is found that the trial constructed robot system is available for the combination of restricted tips and tool holders, and also the tool-tip changing time does not matter in practical use.抄録全体を表示PDF形式でダウンロード (5133K) -
構成刃先の生成に及ぼす被削材硬さの影響大石 健司1993 年 59 巻 3 号 p. 509-514
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーThe forming of built-up edge is studied in the cutting of hardened steel. The built-up edge forms in cutting of low hardened steel, however it has been found that the built-up edge does not form in any cutting speeds in the cutting of hardened steel whose hardness exceeds a certain value (defined as critical hardness). Then, this disappearing mechanism is discussed. As a result, conclusions are obtained that this mechanism is owing to the relation between the maximum hardness to which the built-up edge can reach and the workpiece hardness, and the critical hardness is about a half of the maximum hardness of the built-up edge. Besides, the mirror finish is clarified to be possible in the cutting of hardened steel whose hardness exceeds the critical hardness.抄録全体を表示PDF形式でダウンロード (8571K) -
硬ぜい材料の単粒研削 (第2報)吉岡 正人1993 年 59 巻 3 号 p. 515-520
発行日: 1993/03/05
公開日: 2009/07/23
ジャーナル フリーIn this study, several kinds of materials are circularly ground with a diamond cone indenter and the wave form of grinding force is recorded. It can be expected that the wave form reflects the difference of grinding mechanism among various grinding conditions or the kinds of materials. The vertical component of grinding force differs markedly from the horizontal component in its wave form. That is, the former reaches maximum rapidly after the beginning of grinding, while the latter only gradually increases and becomes maximum around the deepest grinding point. The difference in the wave form is thought to be due to the following two causes : (1) slipping of the indenter tip on the ground surface, (2) strain rate dependence of grinding force. The strain rate dependence is analytically discussed and the analyzed result is able to explain the difference. It is also discussed how the ground materials and sharpness of the indenter tip affect on the wave form, maximum grinding force and the ratio of vetical/ horizontal component.抄録全体を表示PDF形式でダウンロード (1054K)
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