精密工学会誌
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
62 巻 , 12 号
選択された号の論文の27件中1~27を表示しています
  • 片桐 守雅
    1996 年 62 巻 12 号 p. 1667-1670
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 清洲 鴻太郎
    1996 年 62 巻 12 号 p. 1671-1674
    発行日: 1996/12/05
    公開日: 2010/02/16
    ジャーナル フリー
    1985年に米国国防総省が増大する兵器の保守マニュアル・図面等文書の維持・管理の困難さに気づいてドキュメントの電子化に踏み切ったのがCALS (Computer AidedLogistics Support : 当時) の発端であることはよく知られるところであるが, これはまさに現在, 企業・官庁・団体等の組織が直面していることでもある.紹介した米国の航空会社が航空機の保守に伴う技術文書とその作成管理を電子化した事例はこの課題に対する一つのソリューションを提示したものである.同様の課題に取り組まれようとしている諸兄の一助になれば幸いである.なお, この事例はCALS Expo'94において民間CALS実践の優秀事例として表彰されたものである.
  • 小島 俊雄, 川端 清三
    1996 年 62 巻 12 号 p. 1675-1678
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    STEPは初版の制定を終え, 現実レベルへの適用による具体的な経験と評価が蓄積されつつあり, 新たな展開も活発である.STEPは新たな生産システムを先導する標準化開発として基礎技術研究とリンクして発展してきた.今後も本文でとりあげた技術を含め, 多くの審議や試行が重ねられる中で洗練された技術に育っていくであろう.参画者の長期にわたる継続的な努力に敬意を表する次第である.
    STEPにおいて,EXPRESSによるプロダクトデータの記述手法は,その中核技術である.本文が,今後のSTEPおよびCALSの活動に幾分か役立てぽ幸いである.
  • 岸本 朗佳
    1996 年 62 巻 12 号 p. 1679-1683
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    CALSのデータ統合の一部しか紹介できなかったことをお詫びする.図3にあるデータ表現をどのように統合するかが現在の課題である.またデータモデルが無限に存在すると情報交換は困難になる.そのためにはユーザの参加の下に経営慣行 (経営モデル) を絞りこむことが必要である.
    CALS戦略は顧客の視点に立ってCE環境を作り, 知識を流通して製品やサービスを創造することである.EC戦略はその知識や商品を流通してお金に換えることである.この知識創造のコラボレーションをどうコンピュータで支援するか.新しい経営モデルを創造し, 組織構造を変えて人間の知識活動をいかにコンピュータ支援するかがCALSの焦点である.
    CALSは欧米のものと考えるのではなく, 世界のビジネスの枠組みとして, 一日も早くCALSを自分のものとして再定義し, 取り組むことが21世紀を実りあるものにすると確信している.本稿がそのための一助になれば幸いである.
  • 長谷川 勝利, 矢田部 真一, 宇田川 佳久
    1996 年 62 巻 12 号 p. 1684-1688
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 後藤 明也
    1996 年 62 巻 12 号 p. 1689-1692
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 加藤 徹
    1996 年 62 巻 12 号 p. 1693-1697
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 上田 俊彦
    1996 年 62 巻 12 号 p. 1698-1701
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 中村 晋
    1996 年 62 巻 12 号 p. 1702-1705
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    電機製造業において管理対象の中心となるのは, 部品と図面である.これは, 他の多くの製造業にもあてはまることであろう.YEOSは部品と図面の管理機能に特徴を持ったPDMシステムである.本稿では, YEOSの機能と特徴, さらにはYEOSの応用事例として, 仮想企業体についてご紹介した.
    CALSというと, SGMLやSTEPといった規格をどうやって利用していくかという話になることが多い.もちろん, これらの規格を採用していくことの重要性を筆者は否定するものではないが, それよりもさらに重要なのはデータの一元化と共有というコンセプトをいかに具現化するかということである.また, 真のCALS化 (企業間のデータ共有) の第一歩は, 社内における製品情報の一元化であるということも信じている.
    本稿が, CALSとは何かという本質的議論をはじめるきっかけになれば幸いである.
  • 尹 泰聖, 鈴木 宏正, 木村 文彦
    1996 年 62 巻 12 号 p. 1707-1711
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    素材の組合せから溶接部品を設計する問題を逆に溶接部品から素材への形状分割問題として考えて, 計算機で支援する方法を提案する.そのため, 面接続特徴と面接触特徴を各々定義して, 溶接部品の分割前後の形状を多重特徴で認識する.面接続特徴は溶接部品の凹稜線グラフから認識され, 面接触特徴は分割される二つの素材形状から認識される.認識された多重特徴に基づいて溶接部品の形状分割を支援する.
    本研究では, 元の溶接形状に対して分割する方法より, 元の形状と分割された後の形状を実時間で比較しながら溶接部品を設計することを目的とした.同一形状に対しても, 溶接で製作するために形状を分割する時, その分割方向によって, 製作形状と工程計画などが異なるが, 多重特徴認識によってこれらの作業も支援できると思われる.また, 形状分割作業をユーザと計算機との対話形式で実施することによって, 溶接設計時の設計生産性の向上が期待される.
    今後は, 認識された面接続特徴と面接触特徴に基づいて, 分割された形状の溶接製作形状を自動生成するルールベースシステムを開発する予定である.
  • 楼 林, 吉田 典正, 花蜜 宏晃, 山口 富士夫
    1996 年 62 巻 12 号 p. 1712-1716
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    The point-in-polygon test is one of the most fundamental geometric tests and appears very frequently in geometric modeling and computer graphics. Many such algorithms dealing with the polygons of the linear edges, have been discussed. However, the algorithms dealing with the polygons including the curve edges are seldom discussed in the literatures. In this paper, by using the 4 x 4 determinant method and a sign correction technique, a parity algorithm dealing with the polygons including the curve edges is proposed, and a complete program for this algorithm is presented. By classifying an area surrounded by a curve edge and its corresponding virtual edge as a plus or minus one, and determining whether the test point is in the area or not, the curve edges can be processed in the same way as the linear edges.
  • 黒田 満, 東 正毅, 斉藤 剛, 渡辺 由美子
    1996 年 62 巻 12 号 p. 1717-1721
    発行日: 1996/12/05
    公開日: 2010/02/16
    ジャーナル フリー
    広く普及してきた汎用の数式処理システムを導入することによって, 形状設計分野で有用性が認められているクロソイドスプライン補間曲線をより一般的に手軽に導く方法を示すことができた.与点通過の拘束条件に種々の境界条件式を実行時にデータとして与えてこれらの非線形の条件式を連立してニュートン法で直接解くことができた.数式処理機能に合わせた注意深い定式化によってプログラムを極めて簡潔に記述することができた.これはまた数式処理機能のこの分野での有用性の一端を例証するものであると考える.
    一方, クロソイドスプライン補間曲線は比較的制約が強いこともわかったので, 今後, 本研究の考え方を拡張して1スパンが複数個のクロソイド弧からなる曲線, 曲率が弧長の2~3次関数となる曲線あるいはそれらの複合曲線といったより柔軟性のある曲線を考えてゆきたい.そして, 曲率プロファイルの制御による補間曲線の一般的な形状制御法を考えてゆきたい.
  • 井原 透, 松崎 崇, 平岡 弘之, 諸 潔
    1996 年 62 巻 12 号 p. 1722-1726
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    This paper deals with social structured autonomous distribeted manufacturing system that puts together dual defferent productin planning systems and productin system organically. This system, in the case of the ordinary planning phase, limits a combination of production plans by introducting a hierarchical structure into the usual planning procedure in attempt to give priority to the system efficiency. The system also executes the plan solving contradiction by Truth-Maintenace-System in a station-level, so it keeps considering the concrete situation of the level during the production process. In the case of the trouble phase that is impossibile to solve in a single level, the system adopts a cooperative planning system by using a loop structured network in order to avoid the trouble and produces such a plan to execute. These systems are connected by the blackboard which stores domain functions to start themselves, then the system accomplishes the Self-Organization according to the different phases. Finally the evaluation tests carried out in the CNC drill machine's system from the viewpoint of CPU-load in the communication and the precision in the processing.
  • 水野 貞男, 星野 彰教, 森田 哲也
    1996 年 62 巻 12 号 p. 1727-1731
    発行日: 1996/12/05
    公開日: 2010/02/16
    ジャーナル フリー
    In order to reduce gear noise, it is important to improve the roughness of the making tooth surface and to give proper tooth trace and profile modification. The gear honing is reasonable in view of this, but an adequate dressing is required to transfer exactly and quickly the shape of dressing gear to gear honing abrasive wheel. Therefore, in the present investigation, a new dressing method is introduced. In the new method, radial and axial feed is given at same time for an abrasive wheel in the form of internal gear. And then idle traverse feed is given. When the feed rate is 10μm/traverse, the error of the tooth is smaller than 10μm and dressing time can be decreased from 13.4minutes to 3.4minutes at the first dressing and from 1.4minutes to 0.7minutes at the regular dressing as compared with before step feed. This is a reason why the dropped out grains are discharged very well and dressing gear form are transferred very exactly and quickly. Running tests of honed gears were conducted. About 4 dB decrease in gear noise is achieved when the accurately dressed abrasive wheel is used.
  • 大渕 慶史, 松尾 哲夫
    1996 年 62 巻 12 号 p. 1732-1736
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    There are great differences in ground surface integrity and residual stress between CBN and diamond wheels. In our single-grit cutting, the measured cutting forces with CBN and diamond grains were largely different. For further understanding of the difference, friction behavior in cutting is most important characteristic to be solved. So, orthogonal cutting test has been performed to measure friction angle on a carbon steel with CBN, diamond compax, and grain tools. And, the cutting test in SEM was also performed to observe chip formation. There are no differences between friction angles of CBN and diamond tools in ordinary cutting test. However, there is great difference in slow and short distance cutting test. Diamond tools showed significantly small friction angle at about first cutting of 1mm. In the cutting in SEM, the diamond compax and grain tool show a large shear angle and flow type chip, while CBN compax and grain tool show small shear angle with shear type chip. Therefore, diamond tool keeps a small friction coefficient during short cutting distance, and the phenomenon was shown in high speed single grit cutting test.
  • 春日 幸生
    1996 年 62 巻 12 号 p. 1737-1741
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    圧電素子を組み込んだ極薄板用深絞り金型を試作した.素子の微小振動によりしわ押さえ力を制御し, 限界絞り比の向上を期待した.
    (1) 圧電素子によりしわ押さえに200Hzの振動を付加すると限界絞り比は1.57から1.79に向上する.
    (2) 振動の付加により加工荷重は約11%低下するが, より高い絞り高さを得るには加工中常に振動を付加するのがよい.
    (3) 周波数および振幅の増加はいずれも限界絞り比を向上させる.
    (4) 圧電素子を振動させた場合, 見掛けの摩擦係数は大幅に減少し, 限界絞り比の向上に寄与している.
  • 山田 誠, 田中 文基, 岸浪 建史
    1996 年 62 巻 12 号 p. 1742-1746
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    In this paper a formulation by which perpendicularity of motion of vertical milling machine is evaluated, is shown. By using it, an estimation method for perpendicularity of motion between X-, Y- and Z- axis based on the master block measuring is proposed. The proposed method has following characteristics : (1) the perpendicularity of motion of X-, Y- and Z- axis is estimated without interference of setting posture of cutting tool, since the geometric error components is derived from driving planes which is calculated by measured points on master block, (2) perpendicularity of motion is estimated without interference of setting errors of master block, since the geometric error components are derived by inner products of normal vectors of driving planes which are independent of coordinate system on machine tools, and (3) since the model of machine tools with geometric errors is constructed of the driving motion and the perpendicularity of motion only, it is more simple to estimate the perpendicularity of motion between X-, Y- and Z- axis.
  • 上神 謙次郎, 庄 子揚, 熊谷 信男, 伊丹 正郎, 杉岡 正美, 土井 紀宏
    1996 年 62 巻 12 号 p. 1747-1751
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    The solid solution hardening is applied to the qualitative improvement of alumina materials. Titanium oxide is occluded in alumina materials by thermal diffusing addition method of which alumina sample is put into the titanium oxide powder and is heated in electric furnace. By these treatment, when the amount of titanium oxide content in the layer of the alumina oxide material is about 0.8%, the Vickers hardness number of the layer increase maximum two times as much as non-treated one. The white corundum, alumina ceramic cutting tool, alumina ceramic and single crystal Al2O3 (white sapphire) are drastically hardened by above methods, the static friability of the abrasive grains is increased and the friction wear of the abrasive grain on rotating cylindrical bearing steel is decreased and the wear of the cutting tool is restricted.
  • 福本 功, 銘苅 春栄
    1996 年 62 巻 12 号 p. 1752-1756
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    Injection molding has an advantage used in making of complicated 3dimensional products. The ceramics injection molding process is mainly composed of four stages. Namely these are the kneading of mixture, the molding process, the degreasing process and the burning process. Each process has many parameteres. To obtain the optimum condition for getting a consistently high strength of the product, an S/N analysis developed by Dr. Taguchi was adopted. The optimum condition for obtaining high strength and quality of products could be accomplished by setting seven factors and two or three levels for each factor. Bending strength depends on the degreasing rate and sintering temperatures. And hardness in product depends only on the factor of sintering temperature. As the sintering temperature rises, the bending strength and hardness of product increase to high values, which lead to a small pore inside the product. In particular, alumina ceramics characteristic is drastically improved by sintering temperature higher than 1823K.
  • 新留 隆志, 岡本 理, 平田 敦, 吉川 昌範
    1996 年 62 巻 12 号 p. 1757-1761
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    1Tの強磁場がプラズマCVDに与える影響を調べることを目的に, ホローカソードを利用した超伝導マグネヅトを用いたプラズマCVD装置を試作し, この装置で放電特性を調べ, ついでメタンおよび水素ガスを用いて炭素膜の合成を行い, 次の結果を得た.
    (1) 磁場を印加することで基板温度が大きく上昇する.
    (2) メタン濃度を1.5%とし, 1Tの強磁場をプラズマに印加することでダイヤモンドが合成される.
  • 竹内 芳美, 葉 閣斉, 石畝 学
    1996 年 62 巻 12 号 p. 1762-1766
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    This paper describes a new machining concept in the squared corner shaping, making use of the cutting characteristics of non-rotational cutting tools and 6-axis control. Though the 5-axis control machining with conventional rotational tools makes it possible to machine sculptured surfaces efficiently and accurately, some problems still exist in the machining. For example, it is impossible to mill workpieces without round corner. This is due to the usage of rotational tools. The 6-axis control machining with a non-rotational tool allows a variety of machining possibilities. In the study, a new 6-axis CAM system for squared corner shaping was developed to remove the remaining of corner radius after rough cutting with rotational tools. The validity of the system is experimentally confirmed.
  • 柴田 隆行, 栗原 賢二, 海野 和也, 牧野 英司, 池田 正幸
    1996 年 62 巻 12 号 p. 1767-1772
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    Diamond turning was carried out along several crystallographic directions on the (111) plane of single-crystal, copper at a depth of cut of 300nm. Subsurface damage was analysed by cross-section transmission electron microscope (TEM) method, and the plastic deformation behaviour in the turning processes examined by Molecular Dynamics (MD) analysis. Cross-section TEM observation revealed the formation of a polycrystalline structure due to fragmentation of the single-crystal structure just beneath the turned surface, and below this, the formation of multiple layers of cell structures elongated in the cutting direction. Furthermore, the crystals in the fragmented region and the cells near the surface rotated in the cutting direction regardless of the crystallographic direction. However, the depth of the subsurface damage, cell size, and the amount of crystal rotation depended strongly upon the crystallographic orientation. MD analysis revealed less damage in the [110] cutting direction, where slip deformation occurs mainly on the (111) plane parallel to the turned surface, than in any other cutting direction. In the case of the [112] cutting direction, slip deformation occurred predominantly towards the interior of the work material, and consequently, deeper damage was caused. The largest amount of crystal rotation occurred in the [112] cutting direction as effective stress release was difficult to achieve due to less slip deformation.
  • 黒部 利次, 角田 久也, 小野田 誠
    1996 年 62 巻 12 号 p. 1773-1777
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    Ceramic balls are expected to become useful for tougher bearings than conventional ones. However, the conventional ball lapping method which uses a couple of flat and V-groove lapping plates, needs so long machining time. In present paper, efficient lapping method of silicon nitride balls has been proposed. In this method, it is designed that V-groove lapping plate is separated into two parts and three plates are able to rotate independently. In this paper the theoretical analysis of the ball motion mechanism for the proposed method is provided. The results obtained are as follows. (1) In the case with separated V-groove lapping plates, the spin angle θ of ball is able to be controlled by changing the revolutionary speeds of flat, outer V-groove and inner V-groove lapping plates. (2) The stock removal rate is increased with spin angle θ, because relative slide distance in the contact surface between ball and lapping plate increase with it.
  • 酒井 保男, 柳下 福蔵, 古川 勇二
    1996 年 62 巻 12 号 p. 1778-1782
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    In a series of studies on the simulation of grinding process, the 1st report made the functions and calculating procedures of the simulation clear, and the 2nd report showed the measuring method of the cutting edge distribution, that is important input parameter for the simulation. The present paper tries to verify the influence of this distribution on the finished surface roughness and the grinding force with the help of the simulation. It is made clear that the surface roughness increased and the grinding force decreased as the extent of the distribution increases. Also, it is ascertained that the standard deviation of the distribution is a useful parameter to evaluate the grinding wheel surface in order to improve the grinding operation. When a same grinding wheel is used during the finish grinding following the rough one, an optimal extent of the distribution is desirable to attain a high-rate grinding.
  • 森重 功一, 加瀬 究, 竹内 芳美
    1996 年 62 巻 12 号 p. 1783-1787
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    This study deals with the method of tool path generation for 5-axis control machining using the ball end-mill. The 5-axis control machining has been used for the particular shapes such as impeller, blade, rotor and groove of tire. On the other hand, it becomes known that this machining has a lot of advantages in case of application to the general shapes such as molds and dies. However, most of present CAM systems for 5-axis control machining have limitations of the functions for the tool collision, the workpiece shape and the method of machining. For that reason, there are many cases that users cannot get the desirable CL data. In regard to the above problem, we apply the 3-dimensional C-Space showing the relationship between all tool positions and postures and the existence of tool collision. The method of tool path generation devised in this study enables users to generate CL data reflecting their own machining strategy such as the continuous change of tool posture and the machining condition. The method allows an impeller to be actually milled in good machining condition without tool collision. As a result, the validity of the method is experimentally confirmed.
  • 森 義博, 平田 敦, 戸倉 和, 吉川 昌範
    1996 年 62 巻 12 号 p. 1788-1789
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 新津 靖, 宮崎 新一
    1996 年 62 巻 12 号 p. 1790-1794
    発行日: 1996/12/05
    公開日: 2009/06/30
    ジャーナル フリー
    The measurement system for the 3-dimensional shape of the 360° circumference of the object is developed. The measuring method is the light section method in combination with the image processing technique. The measuring device consists of two or four pairs of CCD cameras and horizontal slit laser projectors. They are placed at vertex of a square facing to the center of the square respectively, and the infrared slit rays are projected onto the measuring object. The CCD camera captures an image of a light section line which appears on the surface of the object, and it is digitized by the computer. Its 3-dimensional position is calculated using the principle of the triangulation. The images obtained by two or four optical systems are composed, so that it is able to obtain a closed section of the object. Furthermore, the optical systems scan the measuring object in vertical direction by two linear actuators, and the 3-dimensional shape of the circumference of the object is reconstructed. The present paper deals with the measurement of several simple shape objects using two and four optical systems. From the measurement results, the relation of the number of the optical system to the measurement accuracy is evaluated.
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