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49 巻, 4 号
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坂田 興亜, サディク M.M.1983 年 49 巻 4 号 p. 415-421
発行日: 1983/04/05
公開日: 2010/05/07
ジャーナル フリーThis paper experimentally describes the essential characteristics relating to the noise and vibration excited on thin tube being honed inner wall surface, such as the mutual relations among noise generation, vibration of tube and honing conditions, and also describes on the cause of vibration. Firstly the experiments have been tried to synthesize the modal shapes of vibration on tube by analysing the dynamic responses of tube for impulse hits. At next experiments, noise and vibration have been simultaneously measured with the position of tool on the inner surface of tube in actual honing process. The results of these experiments show that noise has been caused by self-excited vibration on tube and the modal shape of vibration on tube have been not fixed whilst being honed, but translated to other mode, following the moving of honing position of tool. Moreover, even when a modal shape is excited at as short moving distance of tool, the loop and node of modal shape of tube move to the revolving direction of tool with the tool-movement.抄録全体を表示PDF形式でダウンロード (1424K) -
平岡 佑二, 高橋 貞男, 小畠 正義1983 年 49 巻 4 号 p. 422-427
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリー既存の工業材料を利用して, 従来品より高印字寿命 (インクリボン使用) を有するプラスチック複合材料活字の開発を目的とした.まず材料選択のガイドラインを求め, 次いで現状の掌握および実用化材料の開発を進めた.この結果, 従来品に比して大幅な高印字寿命を有するプラスチック複合材料活字が得られた.この開発経緯で得られた要点をまとめると次のようになる.
(1) 既存のプラスチック複合材料活字で最も印字寿命の高いのはフェノール系樹脂とガラス繊維の複合材料によるものであり, FRTP系ではこれを超えるものは見られない.
(2) 印字寿命強弱の判断は実用に近い打字試験で行うのが最も確かであり, これに代わる方法は見当たらない.
(3) 高印字寿命化に必要な最も重要な材料条件は, マトリクスは耐有機溶剤性が高いこと, 強化材はマトリクスとの結合性にすぐれていることである.
(4) 強化材の結合性の向上には, まず材質面からする改善が最も有効であり, 形状・寸法の効果はこれに比べると低い.
(5) 本開発により, 従来品に比して大幅な高印字寿命を有する活字が得られた.この構成材料は, フェノール樹脂にシラン系表面処理剤を施した炭化けい素繊維を複合したものである.複合率70%の印字寿命は, これまでの最強品の約4倍以上である.抄録全体を表示PDF形式でダウンロード (1385K) -
平板の衝撃張出し過程のエネルギー解法と解析例白樫 高洋, 臼井 英治1983 年 49 巻 4 号 p. 428-434
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーThe paper proposes a new method for analysing a dynamic bulging process of plates, in which the equations of motion and of yield criterion are not directly required, but the balance of energies in deformation process, such as the energy for plastic deformation, the kinematic energy and the work done of applied force, is discussed. The method proposed is verified through analysing the deformation process in phase I (during loading) of circular plate under uniform impact loading. The methodis also applied to analysis that of circular plates under annular impact loading. The following results are obtained through these analyses. (1) The dynamic deformation process of plates in phase I under impact loading can be easily analysed by the method proposed. (2) The hinge circle appears at the position where the kinematic energy is maximized-principle of maximum kinematic energy. (3) The plate deforms such the mode that the work done of applied load becomes maximum-principle of maximum work done of applied load.抄録全体を表示PDF形式でダウンロード (1016K) -
大規模破壊過程におけるクラック進展経路の線形破壊力学による考察水谷 勝己, 谷先 盛彦, 田中 芳雄, 井戸 守1983 年 49 巻 4 号 p. 435-440
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーIt was previously found that material removals of ceramics by cutting were carried out in two categories; large scale fracture and small scale one. Crack trajectory by the large scale fracture is presently studied by experiments and numerical analysis of incipient stage of the orthogonal cutting. The following results are made clear. (1) A crack initiates at the region near the tool tip and unstably extends slightly downwards. Its subsequent extension varies depending upon properties of materials and depth of cut. One is arrested and the other propagates until chip is formed. The latter belongs to either of two types; one is for the crack which turns upwards from some depth andemerges out at the upper free surface, the other is for the crack which traverses the work. (2) So long as the crack propagates downwards, its trajectory is nearly coincident with the stress trajectory of the minimum principal stress. (3) When the arrested crack re-extends by the progress of the tool, it propagates more downwards than before arrest. This is because the stress intensity factor Ku is positive. (4) When the crack trajectory turns upwards, material crushing of compression type or shear type is always observed just in front of the tool rake face. (5) The material crushing occurs more easily for materials having lower strength ratio of compression to tension and at lower depth of cut. Consequently the crack trajectory turns upwards earlier.抄録全体を表示PDF形式でダウンロード (1259K) -
一般設計学における機械設計へのパイナンバの応用冨山 哲男, 吉川 弘之1983 年 49 巻 4 号 p. 441-446
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a design process theory by axiomatic approach based on General design theory. Theorems under a hypothesis concerning real designers are deduced, and from it, a production rule type design process model is introduced. In this design process model, the design specification is decomposed into some concepts about physical rules, and the function elements, each of which actualizes the corresponding physical rule as an entity, are selected. The design specification is actualized by the combination of those function elements.In order to operate this design process, a good representation method for functions which enables the decomposition of the specification or the representation of the physical rules, is.required. In the present study, the pai-number method is developed, which is derived from the fact that a machine function can be expressed by the inputoutput energy relation. By using this pal-number method, a guiding principle for the rationalization and the construction of CAD systems of the conceptual design stage of machines is obtained.抄録全体を表示PDF形式でダウンロード (1036K) -
圧力波の発生と伝ぱ機構土屋 八郎, 井上 友一, 森 勇蔵, 井川 直哉1983 年 49 巻 4 号 p. 447-453
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーA study is presented of the energy conversion processes to make clear the generation and propagation of pressure wave as basic phenomena in underliquid electrical discharge forming. Based on precise observation of electrical and mechanical phenomena, a model is proposed for the process in which the electrical energy released in the electrode gap is converted into the internal energy, the radiation energy of the bubble and the energy of the pressure wave in turn. The validity of the model is discussed with both the pressure wave measured by the device of special design and the electrical energy. It is shown that the pressure level, the size, and the possible temperature of the bubble and the form of pressure wave in liquid can be reasonably evaluated by the model in the case of a shorter electrode gap. The results present the basis for the analytical design of the system of underliquid electrical discharge forming.抄録全体を表示PDF形式でダウンロード (1008K) -
山本 巖, 横川 忠晴1983 年 49 巻 4 号 p. 454-459
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーThis paper is concerned with transfer characteristics of a fluidic micrometer of gauging a very small displacement in vacuum space. In the micrometer, gas flows from a constant pressure supply chamber into an intermediate chamber through an orifice, and then leakes into the vacuum space through a gap between a nozzle and its counter face to be measured. Both static and dynamic performance of the micrometer is studied in relations o the supply pressure up to 200 k Pa with experimental examples. The results are as follows; the static characteristic curves obtained in case of various supply pressure, when output pressure is represented in a normalized expression, are identical ; the time constant which represents the dynamical performance of the micrometer varies as a function of the operating pressure; the time constant increases in proportion to the operating pressure up to a maximum value and then decreases, and such tendency and its magnitude is almost independent with the supply pressure.抄録全体を表示PDF形式でダウンロード (1130K) -
刃先温度とすくい面負荷が工具欠損に及ぼす影響河端 裕, 藤村 善雄, 中林 伸一1983 年 49 巻 4 号 p. 460-466
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーFracture mechanism of TiC simple carbide type cermet tool in intermittent cutting has been studied, with regard to cutting edge temperature and cutting force. Machining tests were conducted on a lathe by cutting steel bar having narrow slots. Cutting speed was varied from 1.25 m/s to 4.17 m/s and feed rate from 0.2 mm/rev to 0.4 mm/rev, whereas depth of cut was maintained constant (1.5 mm) throughout the tests. Cumulative failure probability was determined at each cutting condition. Tool life at 50% reliability decreases at low cuttingspeed and at high cutting speed together with high feed rate. Early failure increases due to brittleness of the material at the former and due to plastic deformation of the cutting edge at the latter. Fracture mechanism of a cutting edge varies according to the temperature at a depth of 0.2 mm beneath tool face (Ps). When the temperature at Ps remains below specific temperature (Tc), the cutting edge fails through brittle fracture, but when the temperature becomes higher than Tc, a parallel crack is formed and gradually propagates under the tool face, and finally fast failure breaks the cutting edge. This specific temperatute Tc was found to be about 1 070 K.抄録全体を表示PDF形式でダウンロード (1604K) -
石田 博史, 稲崎 一郎, 米津 栄1983 年 49 巻 4 号 p. 467-471
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーIn-process sensor for ground surface roughness is developed utilizing optical fibres. The sensor has a control system to keep the optimum distance between the fibre and the work. Disturbances of grinding fluid and swarf are avoided by such method that the measurement is carried out in grinding fluid. Two optical fibre bundles, one of them is normal to the target and the other is set with a certain angle against the first bundle, in order to increase the sensitivity of the sensor. The output of the latter signal is divided by the former output. Surface roughness is measured during cylindrical plunge grinding using the sensor developed in this study. Changing process of ground surface roughness is investigated for various grinding condition. Results are summarised as follows. (1) Improving rate of surface roughness is affected by depth of cut, and is hardly effected by work speed. (2) Surface roughness becomes constant after the surface layer of work which corresponds to maximum roughness is removed. (3) The constant roughness value mentioned above increases as depth of cut and work speed increase. Effect of work speed is more dominant than depth of cut.抄録全体を表示PDF形式でダウンロード (860K) -
石川 義雄1983 年 49 巻 4 号 p. 472-477
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a study on the effect of the rolling speed on the rolling friction produced when a hard steel ball rolls between two parallel flat plates. The main results obtained are as follows. (1) When the rolling contact surfaces are unlubricated, the rolling friction is greatly effected by the rolling speeds. (2) In the low speed range of a rolling ball, it is considered that the rolling frictionincreases due to the adhesion and in the high speed range the rolling friction similarly increases due to the collision with the contact surfaces. (3) With a small amount of the high viscosity oil, . the rolling friction decreases due to the less adhesion according to the oil film between contact surfaces, and are not effected still held constant in. case of the lower rolling speed.抄録全体を表示PDF形式でダウンロード (1191K) -
青木 勇, 飯田 喜介, 神保 泰雄1983 年 49 巻 4 号 p. 478-482
発行日: 1983/04/05
公開日: 2010/01/20
ジャーナル フリーNew deburring method with vibratory conveyer is developed. This is based on simple idea that the product on the conveying trough can be ground by abrasive paper previously attached on the surface through the conveying operation. In this paper, deburring rate and edge quality of deburred product are described and some factors affecting themare also discussed. Following results are obtained., (1) New deburring method is developed using a vibratory conveyer with an abrasive paper attached on the surface. (2) The burr of product put on conveying trough can be removed clearly through the conveying operation by rubbing action between burr and abrasive paper. (3) Edge quality of deburred product by this method is excellent cornpared with the other ordinary method.抄録全体を表示PDF形式でダウンロード (1181K) -
各種要因が自励振動の発生に及ぼす影響里見 忠篤1983 年 49 巻 4 号 p. 483-488
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーThe Purpose of this study is to present design datum for an aerostatic guiding system. In this paper, relations between depth of air-pocket and land clearance in the critical condition for the occurrence of self-excited vibration are calculated theoretically when source pressure, orifice radius, air-pocket radius and outer land radius are varied respectively. From one of these relations, it is confirmed thatthe critical land clearance for the stability depends mainly on air-pocket volume, i. e. the smaller the volume the larger the critical land clearance. According to this theory, a guiding system which has land in the air-pocket was designed. From the experiments it was confirmed that the static rigidity and the stability of the system were improved, and experimental values showed good agreement with theoretical ones.抄録全体を表示PDF形式でダウンロード (429K) -
計測システム東江 真一, 山口 力, 海野 邦昭1983 年 49 巻 4 号 p. 489-495
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーAccording as the development of the automatic grinding is taken place, so it becomes a serious problem how grinding state is recognized. And it is described that grinding force is closely related to grinding conditions and the deterioration of the cutting edges, therefore the in-process measurement of the grinding force is important. In this report, the method of measuring the slip in the induction motor to obtain the grinding power is considered, andthe new system to measure the tangential grinding force is developed with which the problem of the small power and the high speed on the grinding and the problem of the fluctuation on the voltage of the motor is solved. This system can be applied to the small grinding force in the fine grinding, because the minimum resolving power is about 0.202 N {20.6 gf} and the error of the tangential grinding force for the fluctuates of the voltage and the frequency of the electric source on the induction motor is automatically corrected.抄録全体を表示PDF形式でダウンロード (579K) -
村松 直樹, 玉国 法行1983 年 49 巻 4 号 p. 496-501
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリー本研究で得られたことを要約すれば次のとおりである.
(1) 糸切り作動時に供試ミシンの下軸に生じるトルクの計算値は, 実験値と良い対応を示した.このことから, 本計算法は実機の回転軸系に生じるトルクの推定法として妥当であると考えられた.
(2) 下軸のトルク変動には, 従動体の復帰時に二つの顕著な衝撃トルクTiとTtがみられる.
(3) Tiは, 糸の捕捉領域において, ばね力に従動体の慣性力が重畳した外力に基づいて発生する.作用方向は下軸の回転を増速させる向きである.
(4) Ttは, 糸の引出し領域において, 上糸の張力による外力とばね力の差の外力に基づいて発生する.上糸の張力による外力は, 糸の太さやプリテンショナの調節量によってはばね力よりもかなり大きくなる.このときTtは下軸の回転を減速させる向きに作用する.
(5) Tiの動荷重係数は上軸回転数の2乗にほぼ比例して増大する。これに対してTtのそれはほとんど1である。このためTtは, 上糸の張力による外力とばね力の差の圧力角成分がカムの円周方向に静的に作用するとして求めることができる.抄録全体を表示PDF形式でダウンロード (982K) -
ジャケット冷却の場合の温度制御回路定数の測定法千輝 淳二, 久保田 一隆, 垣野 義昭1983 年 49 巻 4 号 p. 502-508
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーAs a part of researches on temperature control of machine tools, the means to measure the circuit constants in temperature-control circuits, which must be established in order to design such a circuit when the spindle head is cooled by jacket cooling, has been studied. The following results were obtained : (1) The most appropriate position to mount the detector for temperature control, is the ournal part of the spindle head, which is closestthe cooling unit. (2) In the case that the construction of spindle head enables the measurement of cooling capacity, the cooling capacity needed can be estimated by first varying the cooling capacity at steady state, and then observing the changes in temperature, to derive the relationship between the temperature elevation and the cooling capacity. (3) The transfer function for the temperature elevation of spindle head may be assumed to be a series of a dead time element and a first order lag element. (4) The above function is adequately obtained by observing the step response and the frequency response within a short period of time, say a few minutes.抄録全体を表示PDF形式でダウンロード (1055K) -
形状生成過程の解析岡村 健二郎, 塚本 真也, 上田 陽一, 成川 裕1983 年 49 巻 4 号 p. 509-515
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーIn traverse grinding the grinding system stiffness obtained from the stiffness of the center on the tailstock and the workpiece has changed by relative position of the wheel and the workpiece. Further the value of wheel wear increases as the grinding process advances. The fact as described above makes quite complicated process of shape generation intraverse grinding. This report analyzes the shape generation process in the direction of work spindle. First the formulation of the grinding system stiffness was conducted and the simulation analysis method of the traverse grinding was established. Used this method the shape generation process can be predicted quantitatively. Next the shape error was defined and the effects of grinding condition parameters on the shape error were considered.抄録全体を表示PDF形式でダウンロード (1303K) -
丸山 一男, 辻 裕一, 吉本 勇, 豊山 晃1983 年 49 巻 4 号 p. 516-520
発行日: 1983/04/05
公開日: 2010/01/20
ジャーナル フリーThe electric standard system was renewed in 1977 in Japan. In order to establish this system, a precision solenoid for electric standard use, which is manufactured by winding a copper wire on a quartz bobbin having threads, is required. The manufacture of the precision solenoid requires the measurement of the pitch error of the bobbin before the winding a copper wire. Therefore a new measuring machine which has a very large cubecorner and two electronic comparator's gauge heads as feelers, is manufactured as a trial by utilizing the screw lead measuring machine with a laser interferometer. The main results are as follows : (1) The measurement of the thread having large diameter (250 mm in this case) and small pitch (1 mm in this case) became to be possible. (2) The result of measurement by this new measuring machine for the bobbin shows a fairly good agreement with that by the Moore's coordinate measuring machine. (3) The preciseness of measurement is 0.15 μm for repeatability in the standard deviation.抄録全体を表示PDF形式でダウンロード (1390K) -
すくい面摩耗への影響山根 八洲男, 鳴瀧 則彦1983 年 49 巻 4 号 p. 521-527
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーIn order to clarify the effects of the oxygen content in the atmosphere on tool wear, high speed face milling tests were carried out on plain carbon steel S 45 C and stainless steel SUS 304 with carbide, cermet and ceramic tools. Cutting tests were conducted in the sealed chamber of which the atmosphere was changeable. In the case of milling S 45 C in the low oxygen content atmosphere, the crater wear reduced drastically and oxide layerswere observed on the rake face of the tested tools. A logarithmic relation was found between the crater wear and the concentration of oxygen in the atmosphere. It was also found that the thermal cracks on the rake face reduced with the decrease of the oxygen content in the atmosphere. In the case of SUS 304, the crater wear was not influenced by the oxygen content, but the chipping wear seemed to be suppressed by the decrease of the oxygen content.抄録全体を表示PDF形式でダウンロード (1810K) -
高木 六弥1983 年 49 巻 4 号 p. 528-532
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (1147K) -
吉川 昌範1983 年 49 巻 4 号 p. 533-539
発行日: 1983/04/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (1311K)
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