巻号一覧
55 巻, 2 号
選択された号の論文の31件中1～31を表示しています
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小林 昭1989 年 55 巻 2 号 p. 245-249
発行日: 1989/02/05
公開日: 2009/10/08
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柿崎 克行1989 年 55 巻 2 号 p. 250-253
発行日: 1989/02/05
公開日: 2009/10/08
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鈴木 実, 橋浦 雅義, 海野 富男1989 年 55 巻 2 号 p. 254-259
発行日: 1989/02/05
公開日: 2009/10/08
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高木 俊宜1989 年 55 巻 2 号 p. 260-264
発行日: 1989/02/05
公開日: 2009/10/08
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桑野 博喜1989 年 55 巻 2 号 p. 265-269
発行日: 1989/02/05
公開日: 2009/10/08
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増沢 隆久1989 年 55 巻 2 号 p. 270-273
発行日: 1989/02/05
公開日: 2009/10/08
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塩川 高雄1989 年 55 巻 2 号 p. 274-277
発行日: 1989/02/05
公開日: 2009/10/08
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松井 真二1989 年 55 巻 2 号 p. 279-284
発行日: 1989/02/05
公開日: 2009/10/08
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吉本 宏1989 年 55 巻 2 号 p. 285-287
発行日: 1989/02/05
公開日: 2009/10/08
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鈴木 誠1989 年 55 巻 2 号 p. 290-293
発行日: 1989/02/05
公開日: 2009/10/08
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秋山 伸幸1989 年 55 巻 2 号 p. 294-298
発行日: 1989/02/05
公開日: 2009/10/08
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三谷 力, 黒川 英雄, 米澤 武敏1989 年 55 巻 2 号 p. 299-304
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーDiamond-Like Carbon films (DLC films) of Knoop hardness of 2800 were deposited at low temparature with a deposition rate of 3000Å/min by a new method (PI-CVD method). The DLC films were deposited by accelerated ions and radicals from glow discharge plasma of CH4 and Ar. The method is suitable to deposit the film on the metal-evaporated video tape. The DLC films of 100Å in thickness were examined if they were suitable for a protective coating for the tape by VTR-like rotary-head still test and repeated playback test. No degradation in the reproduced output level was observed for the DLC film coated tape during 100 hours run, while the output level of the tape without the DLC film degraded after 1.5 hours run in the still test. And the DLC film also greatly improved the durability of the tape in the repeated playback test.抄録全体を表示PDF形式でダウンロード (5307K) -
五百井 俊宏, 仁科 健治, 福田 好朗, 神田 雄一, 木下 直治, 高沢 孝哉, 花岡 忠昭, 堂前 正起, 柴田 順二1989 年 55 巻 2 号 p. 305-310
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThe objective of this research work is to develop a process planning system for deburring of castings In order to develop the system, the deburring processes and operations by manual and robot were analyzed by the motion analysis method It was found that the correlations between the burr generation in the castings and the usage deburring tools existed Furthermore, the correlation could be represented by use of the production rule which was a kind of knowledge representation methods Based on the results, the expert system for process planning which was composed of production rules was developed. The system is able to decide the suitable deburring tools and their operation sequence for each burr by using the knowledge base. Result of this research work shows that the proposed system is useful for the deburring of castings.抄録全体を表示PDF形式でダウンロード (3315K) -
幾何学的モデルの統一化のための基礎相沢 民王1989 年 55 巻 2 号 p. 311-316
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーA new mathematical model, called the cell complex chain, is proposed as a base for unification of different geometric models. The starting point for defining this model is represented by a pair of a subset of a cell complex and a cell sub-complex generated from the subset of a cell complex in homology theory. The data of so-called boundary representations of solid shapes and their manipulations for the shape transformation can be reasonably described semantically and formally in the restricted cell complex chains, called the boundary cell complex chains, and the figure transformation. A formal data model, called abstract cell complex chain, for CAE databases is introduced to make the data of boundary representations correspond to the geometric cell complex chains.抄録全体を表示PDF形式でダウンロード (1028K) -
本田 智, 沢田 朗, 北畠 靖浩, 北沢 英人, 江沢 正1989 年 55 巻 2 号 p. 317-322
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThe theory of grasping method of object with the most suitable force, by which an object could be grasped in no slip condition nor over grasped condition, had been reported already. The purpose of this paper is to describe the details of the vibration gripper applied this theory. The most distinctive point of this gripper, is in the compact vibration roller constructed by Harmonic Gear, by which forced vibration and correction for slipping could be able easily. The second special point is in the control circuit of grasping force, in which the circuit is divided in two sections : one is the grasping motor circuit operated at low response, and another is piezoelectric actuator circuit operated at high response. By the result of experiment, it has been cleared that this gripper had ability to grasp the object with the most suitable force as mentioned above constantly, and, in addition, safety factor for this grasping force could be controlled to adequate value, by regulating the frequency of forced vibration. Also, band width for the control circuit of grasping force has been improved up to 116.5 Hz by the piezoelectric actuator circuit inserted for this purpose.抄録全体を表示PDF形式でダウンロード (1004K) -
白瀬 敬一, 稲村 豊四郎, 安井 武司1989 年 55 巻 2 号 p. 323-328
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーMachining error distributions in end milling operation have been analyzed quantitatively based on statistical treatment. It is assumed that the machining error distribution consists of two normal distributions which have different standard deviations. Experimental results show that, among 5 machining centers and 3 tool holders experimented, one of the standard deviations remains almost constant but the other one changes largely. The steady standard deviations which remain almost constant have the value from 1μm to 2 μm when machining errors are obtained as the difference from the average error. The steady standard deviation for another machining errors obtained as the differetial error between two successive workpieces shows that recramping tool holders and/or tools increase the value from 1.82 μm to 2.33 μm to 3.83μm. Exchange of workpieces makes machining error distribution large. The steady standard deviation for the latter increases from 1.45 μm to 2.96 μm and the unsteady one increases from 10.4μm to 16.8 μm.抄録全体を表示PDF形式でダウンロード (1086K) -
白石 昌武, 久米 悦雄1989 年 55 巻 2 号 p. 329-334
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーState feedback control is applied to reduce the lathe chatter vibration that can be detrimental to a workpiece surface finish. For the sake of simplicity, the development is based upon the use of a second order model of the machine tool-workpiece structure. State equation and output equation are derived from this model by using a Pade approximation to the regenerative term. An observer is also used to estimate state variables of the overall control system. The system stability is obtainable by assigning the desired characteristic roots of the state feedback and observer in the unit circle of the complex Z-domain. The optimum control law is implemented by regulating the position of the cutting tool with respect to the workpiece.抄録全体を表示PDF形式でダウンロード (1023K) -
池野 順一, 小林 昭, 河西 敏雄1989 年 55 巻 2 号 p. 335-340
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThis paper is concerned with a newly developed YAG laser drilling method of fused silica glass. They have been said that drilling the glass with YAG laser is impossible because of its transparency. As a result of several trial methods for glass with YAG laser, newly drilling method was developed. The principle of this method is as follows. A block made of PTFE (Teflon) having φ 1 × 4 mm hole is set contact with the back side of glass. The hole is filled with NiSO4-2 mol/ l solution. When laser light irradiates from the upper side of glass, it goes through the glass and almost of laser power is absorbed by the solution. Temperature of solution is rapidly raised, and vaporized. Because of the high temperature and pressure of vaporized solution, the glass can be drilled from the reverse side. As a drilled hole becomes deep, the solution reaches always the bottom of hole by the capillary action. Therefore, thick glass up to 1.5 mm can be drilled in 0. 2 mm diameter with this method. Hole is always drilled along the incident direction of laser, so the L-shaped holes were obtained by changing the YAG laser incident direction.抄録全体を表示PDF形式でダウンロード (13623K) -
長谷川 素由, 石田 有示1989 年 55 巻 2 号 p. 341-346
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThe topographical feature of behavior that surface asperities are. deformed under rolling process has been clarified by the method of pattern recognition. First of all, it is confirmed that the topographical feature of surface roughness can be extracted with six models of geometrical shape and two models of slope setting on the present study. Next, the relationships between the rolling conditions and the number of pattern matchings are investigated. It is found that the results are summarized as follows. The number of pattern matchings on triangle model and trapezoid model are increasing along with the increasing number of rolling passes. In case the back tension is a high level, the number of pattern matchings on the trapezoid model are increasing along with the increasing front tension in the right-angled direction to the rolling direction. Moreover, in consideration of accidental factors such as friction and wear, it can be assumed that the random surface roughness curves are deformed in accordance with Markov processes. With further advancing the investigation, it is clarified that the state probabilities of slope model, geometrical shape model of peak and valley are already in steady-state and about 4 : 3 : 3 when the number of rolling passes is three.抄録全体を表示PDF形式でダウンロード (1106K) -
吉川 昌範, 菊池 久仁彦, 塚田 忠夫, 笹島 和幸1989 年 55 巻 2 号 p. 347-353
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThis experiment is carried out to examine the wearing process of a diamond cutting tool. In order to know the wearing process, only one cutting tool made of singlecrystal diamond is repeatedly used through out the experiment, varying both materials to be cut and the cutting conditions. The results are as follows : The cutting tool edge wears more rapidly when it cuts aluminum alloy than oxygen-free copper. The wearing trace becomes proportionally shallower as the cutting depth becomes smaller. With ultra-precision cutting, the first stage of cutting is rough plucking, then the plucked surface is smoothed through secondary cutting or through burnishing with the cutting tool edge.抄録全体を表示PDF形式でダウンロード (11212K) -
中島 利勝, 塚本 真也, 佐藤 一伸1989 年 55 巻 2 号 p. 354-359
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThe thermal deformation rate of wheel has been measured by using air-micrometer in process of cylindrical wet plunge grinding. By taking the thermal deformations rate of wheel and workpiece into account, the size generation process is experimentally analyzed. Main conclusions are as follows : (1) When using resinoid wheel which contains aluminium powder in bond materials, the thermal deformation rate of wheel rapidly increases and shows sharp peak in spark-in state, becomes zero in steady state and then rapidly decreases in spark-out state. (2) In spark-in state the actual size generation rate increases abruptly and exceeds the effective plunge speed because the thermal deformations rate of wheel and workpiece increase rapidly, and in spark-out state the actual size generation decreases more rapidly than the observed size generation rate. (3) In the case of the grinding heat strikingly generates, the processes of size generation, grinding forces, grinding temperature of wheel and workpiece and residual stock depend on the relative infeed rate, which is regarded with the thermal deformations rate of wheel and workpiece.抄録全体を表示PDF形式でダウンロード (6916K) -
塚本 公秀, 松尾 哲夫, 上田 昇1989 年 55 巻 2 号 p. 360-365
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThe machining of grinding wheel is an important research problem related to wheel finishing process. This subject is also a typical example of ceramic composite material machining. However, there is insufficient information about this type of cutting. In this study, a turning experiment was performed on white alumina grinding wheels by the use of cemented carbide, sintered CBN and sintered diamond single point cutting tools. The cutting speed ranged from 0.003 to 150 m/min, the maximum depth of cut was 1.0 mm, and the feed was 0.6 mm/rev. Thus, the tool wear and cutting force were measured for various cutting conditions, and the optimum operating condition and mechanism of chip formation were obtained. The effects of cutting speed, rake angle, and nose radius were specially investigated. The cutting mechanism was also studied from a specially low speed orthogonal cutting experiment and FFT analysis. It is evident from this study that grinding wheel can be cut easily by using a proper cutting tool, such as K01 and sintered diamond tool, and by selecting relatively low cutting speeds, great negative rake angle and large nose radius. The chip is mainly formed by compressive fracture.抄録全体を表示PDF形式でダウンロード (6619K) -
隈部 淳一郎, 神 雅彦, 西尾 彰文1989 年 55 巻 2 号 p. 366-371
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーIn this report, it is analyzed that the precision drilling of ceramics can be done by using a new ultrasonic superposition vibration cutting of ultrasonically vibrated ceramics (USVC). And this analytical results can be confirmed by the experiments using a new vibration cutting devices with the 50 Hz electro-hydraulic power device, ultrasonically vibrated core drill and ceramics. The main results are as follows : (1) It has been verified that precise holes of ceramics can be machined by a new ultrasonic superposition vibration drilling of ultrasonically vibrated ceramics in the lower cutting resistance and more efficient that the conventional drilling or the conventional vibration drilling. (2) It is considered that the torsional ultrasonic vibration core drill is suitable for high accuracy drilling of ceramics and the longitudinal ultrasonic vibration core drill is suitable for high efficient drilling of ceramics. (3) It is believed that this research will contribute to development of a quite new drilling machine for high accuracy and efficient drilling of ceramics.抄録全体を表示PDF形式でダウンロード (1025K) -
-接線研磨抵抗について-進村 武男1989 年 55 巻 2 号 p. 372-374
発行日: 1989/02/05
公開日: 2009/10/08
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鋼歯車とかみ合わせた場合岩井 実, 武士俣 貞助1989 年 55 巻 2 号 p. 375-380
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーA polyacetal gear of module 2 is engaged with a steel gear coated by gear oil or grease only initial stage, and different loads are applied to the set. Bending strengths and wears of polyacetal gear teeth under lubricated conditions are compared with those obtained under unlubricated conditions. Experiments are also carried out under the conditions of forced lubrication, and similar comparative studies are made on the results. Obtained test results are summarized as follows : (1) Reduction of bending strength of gear teeth caused by temperature increase is suppressed by lubricating gears. Furthermore, it is found that the extent of reduction of bending strength of gear teeth varied according to the lubrication methods applied even under the same load. The smallest is in the case of forced oil lubrication in which large amount of oil is used, followed by the case of grease coating, and the largest is in the case of oil coating. (2) Marked improvement of allowable loads, in which wears of gear teeth are taken into consideration, are recognized under the lubricated conditions compared to those obtained under unlubricated conditions.抄録全体を表示PDF形式でダウンロード (959K) -
数値シミュレーション西原 主計, 久場 康良1989 年 55 巻 2 号 p. 381-386
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーIn order to measure angular accelerations and velocities of multi-link mechanisms, this paper deals with generalized equations of motion and numerical simulations of the angular motion sensor system composed of nine linear accelerometers at each measuring point on the link mechanism. Differing from nonlinear equations by a six accelerometer method, a nine accelerometer method obtains linear equations as to angular accelerations readily after arithmetic calculations of the nine signals. Under noise disturbances, however, integrated values (angular velocities) from the measured signals drift into numerical errors, so the compensation technique combining a numerical low pass filter (frequency domain) and a direct search algorithm was employed. It is confirmed that the above compensation process of the lower frequency range is useful for obtaining probable angular velocities, by the numerical simulations of two short-term sample waves including jerked angular accelerations and constant angular velocities.抄録全体を表示PDF形式でダウンロード (1013K) -
関口 久由, 竹下 光夫1989 年 55 巻 2 号 p. 387-392
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThis paper describes a vibration analysis of a SCARA type Direct Drive Robot (DDR). The arm natural frequency varies depending on the arm configuration, and the bandwidth of the servomechanism for the joint control is restricted by the lowest natural frequency to keep a stable control. Especially in the DDR with one set of parallelogram arm mechanism (single link), the change of the arm natural frequency is remarkably large. In this paper, a mathematical model of the arm mechanism is presented to estimate the arm natural frequency which varies depending on the arm configuration. By the analysis with the model, it is cleared that by using two sets of parallelogram arm mechanism (double link), the lowest natural frequency becomes large and also the change of the natural frequency by the arm configuration can be decreased. It is also shown that there exists an optimum design parameter in which the arm natural frequency becomes almost independent of the change of the arm configuration. Moreover the optimum design parameter is obtained analytically. The analytical results are confirmed by experiments using a developed SCARA type DDR with the double link mechanism.抄録全体を表示PDF形式でダウンロード (874K) -
三好 隆志, 中村 智彦, 近藤 司, 斎藤 勝政1989 年 55 巻 2 号 p. 393-399
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーIn order to measure 3-D model shapes for injection molds, the optical 3-D profile sensor is proposed in this paper, in which the distance between two light spots separated by passing laser light scattered from a target surface through a lens system with two slits is proportional to the displacement of surface in optical axis. This sensor can measure the displacement of a target surface to be measured in a wide range of 300 mm in a non-contact manner with high resolution of less than 0.1% for the full-range and without causing a dead angle (shadow effect), even if the target surface is a free-form surface with a complicated shape including a steep inclined surface up to ±75 degrees. Moreover, there is no need for the sensor to be moved by a servo mechanism, so that it is possible to detect a point to be measured at a short time of 8 ms. The developed automatic measuring system consisting of the 3-D profile sensor, CCD drive unit, main-computer, pulse generator, X-Y table unit and NC/X-Y table can measure a complicatedshaped wood model to be 160 mm in length, 100 mm in width and 110 mm in height, at a high speed of 15.5 min per 8 925 points to be measured under the conditions of 2 m/min table speed and 2 mm sampling interval.抄録全体を表示PDF形式でダウンロード (5947K) -
基準部誤差の測定と自動補正野村 武彦, 金井 彰, 宮下 政和1989 年 55 巻 2 号 p. 400-405
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーFor structuring the system of automatic spindle runout compensation unit with high accuracy and high stiffness involving high precision roundness measuring equipment of datum surface of spindle for detecting runout, the following two problems have to be solved; (1) separation of roundness error and runout by processing the output signals of probes and systematisation with runout compensating actuators, and (2) introduction of actuators with high resolution and high stiffness sufficiently compensative to the sensitivity of probes (refer to 1st report) Considering the two probes measuring method, separation of roundness error of even number of lobes and spindle runout has been tried and comparing the test results using the conventional two probes method with ones using the newly proposed clearance controlled method, the following have been concluded : (1) In viewpoint of measuring accuracy, both methods have measuring error and 3σ of less than 1 LSB, (2) In viewpoint of compatibility connecting compensating actuators, the latter is preferable. The design concept of introducing the clearance controlled method can be applicable to a generalized spindle runout compensation system by considering geometrical arrangement of probes as well as for the above mentioned limited roundness error of even number of lobes.抄録全体を表示PDF形式でダウンロード (1083K) -
降圧剤による血圧の最適制御増澤 徹, 福井 康裕1989 年 55 巻 2 号 p. 406-411
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーThere has been an increasing interest in the blood-pressure control by using vaso-active drug, sodium nitroprusside (SNP), during surgery or in intensive care unit. Since SNP dose response is variable at times, it is difficult to determine fixed control law. To overcome this problem, an Optimal blood-pressure Control system with On-line Pulse Identification (OCOPI) was developed. The OCOPI has two basic functions, “on-line identification” and “the optimal control”. The SNP dose response is identified by the OCOPI by using pulse SNP infusion before each starting control. Sequentially, an optimal control law is obtained based on the identification by using the dynamic programming technique and is used to regulate blood-pressure. Ex vivo evaluations of the OCOPI were carried out by using 5 mongrel dogs. To evaluate availability of on-line pulse identification, 22 cases of the identification were tested on different environment (anesthetize depth) by using one dog. To evaluate the optimal control law, 12 cases of bloodpressure regulation were performed. From ex vivo evaluation results, the OCOPI is found to be a useful system to overcome the control problem which are caused by different SNP dose responses.抄録全体を表示PDF形式でダウンロード (1153K) -
光電式オートコリメータによるピッチングの補正効果清野 慧, 深谷 直樹, 久米 達哉1989 年 55 巻 2 号 p. 412-417
発行日: 1989/02/05
公開日: 2009/10/08
ジャーナル フリーIn order to measure geometrical shapes by a scanning method, any datum line is necessary. In general, the accuracy of the datum must be ten times as high as that of measured workpieces. The datum line is disturbed by the scanning motion and vibration or thermal deflection, even if the original datum line is accurate enough. Influence of these disturbances, can be successfully decreased by the laser autocollimation method which has been introduced by A. E. Ennos and M. S. Virdee. The autocollimation method is essentially free from the scanning error in the Z-direction. In order to suppress pitching error also, they used a pentagonal prism projecting a laser spot on a measured mirror. In this report we try to correct pitching error by measuring it through photo-electrical autocollimator. This is a kind of differential laser autocollimation methods in which the pitching error is canceled by two outputs of probes. This kind of differential laser autocollimation method can measure straight line of mirror with a repeatability of 3 nanometer. And this result promises high accuracy of a differential laser autocollimation method with two probes in measurement of straight or aspherical mirrors with large area.抄録全体を表示PDF形式でダウンロード (1246K)
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