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49 巻, 2 号
選択された号の論文の19件中1～19を表示しています
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本間 琢也1983 年 49 巻 2 号 p. 143-148
発行日: 1983/02/05
公開日: 2009/07/23
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齋藤 長男1983 年 49 巻 2 号 p. 149-155
発行日: 1983/02/05
公開日: 2009/07/23
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二次元切削の場合水谷 勝己, 谷先 盛彦, 田中 芳雄, 井戸 守1983 年 49 巻 2 号 p. 156-161
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーMaterial removal process of ceramics is experimentally and analytically investigated in orthogonal cutting. Mullite, glass ceramics (Macor), sintered alumina and glass are applied in the experi-ments. Large scale fracture and small scale one alternate in the process. The large scale fracture, which appears under large actual depth of cut, initiates in the material at cutting point and propagates initially downward in the cutting direction and then turns upward to emerge to the free surface. This predominates in total removal. Thesmall scale fracture appears in cutting shallow portion caused by previous large scale fracture. Following three types of fracture take place independently or simultaneously in the process of the small scale fracture. That is, (1) fracture, similar to the large scale fracture, with so small size as to end in previously generated fracture surface, (2) fracture caused by coalescence of cracks initiated in front of and behind the cutting point, (3) stopped cracks under cut surface. Elastic fracture stress analysis is carried out to distinguish the removal processes of the large scale fracture and small scale one.抄録全体を表示PDF形式でダウンロード (1954K) -
近 久満雄1983 年 49 巻 2 号 p. 162-168
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーNormal pitch errors and pitch curve deviation were measured for the purpose of indicating the accuracy of non-circular gears by the author. These measurement, however, required much time and labor. To improve these defects, the composite gear testing machine for non-circular gears was made and the inspection of composite gear testing of elliptical gears was performed. This machine is characteristically composed of the pitch-disk ofmaster gear and the pitch plate of non-circular gear. And the setting of the magnet under the disk and the plate above gave the pitch-disk and the pitch plate rolling. Then testing apparatus for the tooth profiles of non-circular gears was made to get the detailed investigation about each of gearings and was replaced a part of the composite gear testing machine above by this apparatus, and the inspection of tooth profile of elliptical gears was performed.抄録全体を表示PDF形式でダウンロード (1132K) -
黒河 久男, 嘉数 侑昇, 沖野 教郎, 菊地 千之1983 年 49 巻 2 号 p. 169-176
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes the methodology of how to determine operation planning for an NC turning in an integrated CAD/CAM system. It is recognized that the operation planning is one of the postprocessors of a process planning and it generates the machining data, such as tools selection, cutting sequence, cutter path, machining condition and other technological information. From the point of realizing an integrated CAD/CAM system, it is required that the operation planning system should be connected to a geometric modeler. Here 3-D geometric modeler TIPS-1 is adopted for this purpose and theNC turning oriented geometry data is automatically generated from the 3-D geometry data of TIPS-1. And for the determination of planning for the operation, the new concept REMOVAL PRIMITIVE is introduced. The Removal Primitive is constructed from the combination of an element of removal geometry area and a set of cutting tools which can remove this area. So the methodology of the planning is to generate the set of Removal Primitives, to decide the every removal areas, to select the cutting tool and its usage sequence and to generate the cutter paths. Furthermore, from available usage of this Removal Primitive, re-clamping, re-chucking and machining condition data put out.抄録全体を表示PDF形式でダウンロード (1599K) -
振動・騒音を制御するための減衰処理とその効果に関する研究久米 靖文, 前田 節雄, 梅野 和彦, 橋本 文雄1983 年 49 巻 2 号 p. 177-183
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリー減衰処理の効果を定量的に評価するために種々の試料の減衰能を損失係数で評価した.またサンドイッチ構造については損失係数, 振動加速度振幅を求める式を導き, 両端自由のサンドイッチはりで実験して確かめた結果, 次のようにまとめることができる.
(1) 今回調べた試料の中では, 減衰効果の大きい方法はサンドイッチ構造にして制振材としてエポキシ系樹脂を用いる場合である.
(2) 両端自由のサンドイッチはりの各層の材質, 寸法および両端の境界条件, 加振力, 材料定数がわかれば, 曲げ振動し, 制振材の層が厚い場合の減衰能を損失係数で評価し, 加速度振幅を見積もることができる.抄録全体を表示PDF形式でダウンロード (1207K) -
清水 伸二, 伊藤 鎮, 福田 理一1983 年 49 巻 2 号 p. 184-189
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリー複数ボルト締結体の基本モデルと考えられる円板状単一ボルト締結体を対象として, ボルト頭部が締結時の締結体変形および結合面圧力分布に及ぼす影響について実験的に考察した結果, 次のことが明らかとなった.
(1) ボルト頭部は, 締結体変形の影響をほとんど受けずに, 締結体の変形を拘束する役割をする.
(2) ボルト頭部二面幅の増大は締結体変形勾配をより小さく抑え, 結合面圧力分布をより一様とするとともに, 締結体端部沈み込み量を増大させ, 圧力作用範囲を大きくする.
(3) ボルト頭部高さの増大は締結体変形勾配に対しては影響が小さいものの, 結合面圧力分布をより一様とするとともに, 締結体端部沈み込み量を増大させ, 圧力作用範囲を大きくする.
(4) ボルト頭部二面幅は, 締結時の締結部静的挙動の改善の限界を決定し, 頭部高さは, その限界まで静的挙動を改善する役割をしている.また, この頭部寸法には, 適切な寸法関係が存在し, これを頭部寸法比H/Bで表すことができ, M8ボルトの場合約0.6である.
(5) ボルト頭部の締結部静的挙動への影響は, 締結体厚さの増大に伴い小さくなるが, 頭部座面圧力による締結体の圧縮弾性変形への影響はなくならない.抄録全体を表示PDF形式でダウンロード (1296K) -
基礎実験堀 隆一, 石川 憲一, 横山 恭男1983 年 49 巻 2 号 p. 190-194
発行日: 1983/02/05
公開日: 2010/01/20
ジャーナル フリーThe purpose of this paper is to investigate screw tightening in order to attain the certainty of tightening by means of the reduction of equivalent kinetic friction by harmonic vibration. In the present paper, the findings of the investigation on the model and basic experiments are given. The model experiment for the inclined surface forscrew tightening agrees approximately with the model analysis. The basic experiment which was carried out using an M 20 Bolt applying torsional vibration showed that there is a clear vibration effect when the tightening velocity ratio V (V= X/θω, where X; tightening velocity, θω; amplitude of vibration velocity) is less than 1. Therefore, the axial tension increases and its variance can be reduced by harmonic vibration. It is clear from the experimental results that the screw tightening by harmonic vibration is effective.抄録全体を表示PDF形式でダウンロード (918K) -
表面粗さの解析岡村 健二郎, 塚本 真也, 坂倉 守昭, 岡村 将光1983 年 49 巻 2 号 p. 195-200
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーThe ideal in-feed curve in plunge grinding must be decided by the distinct evaluation standard which is obtained by the theoretical and experimental analysis of grinding phenomena, and then this curve fulfills the requirements for high efficiency, accuracy and quality. In the first report, the relation between in-feed conditions and efficiency was analyzed quantitatively. Therefore, in this report, the surface roughness is adopted which is one of the most important evaluation functionsof quality, and it's variation process in constant infeed rate and two in-feed rates plunge grinding is made clear. Then the factors which regurate the surface roughness are discussed by analyzing the effects of stock removal, setting depth of cut and speed ratio on surface roughness. Also the effect of the backing wheel head rapidly just before sparkout is evaluated from the view points of efficiency and surface roughness, and the possibility of the shortening spark-out time is confirmed. Then the optimum amount of the backing is decided theoretically.抄録全体を表示PDF形式でダウンロード (1062K) -
理論解析と平面制御宇根 篤暢1983 年 49 巻 2 号 p. 201-207
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーIt is necessary for attaining highly flat work surfaces to control the polisher surface so as to be flat at all times during polishing. The surface generation process of the work and conditioning ring has been investigated for conditioning ring type polishing with an elastic and wear polisher. A surface generation equation newly using the amount of gap has been derived. The surface shape generation of glass works and a pitch polisher was simulated. The results obtained are as follows. (1) The polisher flatness is maintained highly by a load control where the ratio of average pressureon the conditioning ring to that on the work is made larger, and there is an increased asymmetric load on the outer periphery of the polisher. (2) It is impossible to achieve convex polishing by controlling the rotating speed of the work and conditioning ring in relation to that of the polisher, but it is possible by controlling the average pressure ratio and asymmetric load. The coneshaped, saucer-shaped, concave and convex polishers are corrected to be flat by the latter control. (3) The point symmetrical and concave or convex works can be polished with a high degree of flatness by the load control, with keeping, the polisher surface flat.抄録全体を表示PDF形式でダウンロード (1168K) -
北嶋 克寛, 西山 隆雄, 吉川 弘之1983 年 49 巻 2 号 p. 208-215
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーAssemblability check problem in machine is usually not thought as an important problem when one designs machine with drawings. But it becomes important when one designs machine using a flexible machine design system such as HIMADES-1 in which the structure and dimension of components can easily modified, since it may often occur that the modified components change into unassemblable because of its flexibility. In the present paper, it is discussed that the most important information for the assemblability check problem is the oriented loop which represents the relation of topological and geometrical restriction among parts, and using graph theory a mathematical method is derived that leads the above oriented loop systematically from the data structure of the design system. An interactive assemblability check system. is developed by using the algorithm that finds disassembling process systematically based on the above mentioned method. This system, of cource, has also an interference check function that is needed after the part to be removed is decided.抄録全体を表示PDF形式でダウンロード (1469K) -
水野 毅, 樋口 俊郎1983 年 49 巻 2 号 p. 216-221
発行日: 1983/02/05
公開日: 2010/01/20
ジャーナル フリーThis paper describes theoretical and experimental studies on the stabilization of step motors by the mechanical dampers. The instability phenomenon that is called mid-frequency resonance restricts the application of step motors. It is known that the instability phenomenon can be eliminatedby using viscously coupled inertial dampers. The stability criteria of permanent-magnet step motors with or without the dampers are obtained. The effects of the damper parameters, such as the viscosity-damping coefficient of damper and the inertia of damper rotor, are discussed. Experimental results coincide well with the theoretical predictions.抄録全体を表示PDF形式でダウンロード (872K) -
久曽神 煌, 稲田 久1983 年 49 巻 2 号 p. 222-227
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーThe lapping has been used experientially for finishing method for the higher roundness of cylindrical shafts and holes. However, there are very few reports about the theoretical analysis of the finishing mechanism for the high precision polygonal cross section of cylinder. This study offers a new method of finishing polygonal shafts, of which shapes are ellipsoidal, triangular, of fourprotrusion and so on. By this method, the amplitude can be increased and decreased of any Fourier's component of the out-of-roundness. Special typesof laps were produced by applying the measuring method of roundness called “V-block method”. Using one of the V-block type laps, the magnitude of the four-protrusion component was increased from 8.4 μm to 9.9 μm, while the other components were decreased. Then the out-of-roundness was improved from 35 μm to 25 μm. By setting the angle between the supporting teeth adequate value, any polygonal shaft can be finished with these laps. This method is applicable also for finishing the polygonal holes.抄録全体を表示PDF形式でダウンロード (1327K) -
単石回転形ドレッシング中島 利勝, 宇野 義幸, 世俵 秀樹1983 年 49 巻 2 号 p. 228-234
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーA new dressing method is introduced, in which. a single point diamond dresser is mounted on eccentrical rotating spindle and fed parallel to the wheel surface, for higher performance of grinding wheel. It is expected in this method that cutting edges on the wheel surface are sharpened by more chance of cleavage fracture, because grains are forced in various directions. Sharpness coefficient of cutting edge, estimated initial wear area and mean number of cutting edges are defined ascharacteristic values to quantify the condition of cutting edges on the wheel surface. The dressing process is significantly affected by the revolution ratio of dresser to wheel and the decimal place of the ratio should be selected except 0 and 0.5. Cutting edges generated in the new method are sharper, while the number of cutting edges is slightly fewer than in conventional one. Grinding force and residual stock are smaller while surface roughness and wheel wear are larger in this method and grinding ability is maintained longer as compared with conventional one.抄録全体を表示PDF形式でダウンロード (1590K) -
Ni-Cr-Al合金の溶解挙動によるγ'相の影響の検討牧野 英司, 佐藤 敏一, 丸山 憲一1983 年 49 巻 2 号 p. 235-239
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーAnodic dissolution behavior of solutioned and of aged Ni-Cr-Al alloys has been studied in 3 mol/dm3 NaNO3 and 2 mol/dm3 NaCl solutions at 30°C. The recovery of γ' from the alloys was determined. using electrolytic extraction technique. The dissolution current efficiency of the alloys was measured in a flow cell under controlled current densities ranging from 1 to 100 A/cm2. The results show that no dissolution of the γ' is observed in NaNO3, and the γ' particles drop out of the electrode surface during dissolution of the alloy matrix, whereas they dissolve anodically in NaCl. The metal removal rate of high γ' content alloys is higher in NaNO3 than in NaCl due to the dissolution behavior of γ'. Moreover, higher metal removal rate is obtained for the aged alloys than for the solutioned alloys in NaNO3. The enrichment in chromium in the alloy matrix during precipitation of γ' facilitates the transpassive dissolution of the aged alloys in NaNO3, and thus the current efficiency becomes close to 100% at all current densities, leading to poor dimensional control.抄録全体を表示PDF形式でダウンロード (1098K) -
岩田 一明, 森脇 俊道, 星川 雅之1983 年 49 巻 2 号 p. 240-246
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーHigh speed drilling machines equipped with spindles supported by hydro-static air bearings and driven by air turbines are manufactured and employed in high speed micro deep drilling of holes from 0.1 mm to 0.9 mm in diameter. A special drilling machine with which relative rotational motions can be applied to both the drill and the workpiece is developed and applied in addition to the drilling machine of conventional type. The maximum rotational speed of the main spindles is 180 000 rpm. The drills are made of high speed steel and carbide. Drilling tests are carried outfor free machining stainless steel SUS 303 Se and brass. The torque and the thrust during drilling and the wear of the drills are measured. The chips, the drilled holes and the burrs are also examined after the drilling tests. It is found that the sharpness of the cutting edges of the drill has much effect upon the cutting forces and the accuracy of the drilled holes, since the drilling is performed at very high rotational speed and yet at minute feed rate. It is also found that the formation of the burrs are suppressed when the relative rotational motions are applied to the drill and the workpiece.抄録全体を表示PDF形式でダウンロード (1402K) -
新しい溶接技術金谷 文善, 永井 裕善1983 年 49 巻 2 号 p. 247-258
発行日: 1983/02/05
公開日: 2009/07/23
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相浦 正人1983 年 49 巻 2 号 p. 259-264
発行日: 1983/02/05
公開日: 2009/07/23
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矢野 宏1983 年 49 巻 2 号 p. 265-266
発行日: 1983/02/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (357K)
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