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49 巻, 7 号
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中川 三男1983 年 49 巻 7 号 p. 829-834
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (1161K) -
SCARA制御装置のハードウェアとソフトウェア古屋 信幸, 相馬 勝男, 陳 栄進, 牧野 洋1983 年 49 巻 7 号 p. 835-841
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThe Selective Compliance Assembly Robot Arm (SCARA) is a newly developed robot for the use of small-lot batch assembly. In the previous report the characteristics of selective compliance effect were discussed and the experimental results on insertion were shown. The robot is controlled by an 8-bit microcomputer. In this report the hardware and the software of the controller are discussed. An arbitrary motion curve similar to a cam curve is used to move arms, and two axes are driven synchronously by the softwared DDA. Thus smooth movement is obtained. The results on repeating positioning accuracy, residual vibration and acceleration characteristics are shown. In spite of utilizing a low level microcomputer, the robot could obtain a sufficient speed up to 0.5 m/s which almost corresponds to the speed of a human operator.抄録全体を表示PDF形式でダウンロード (1185K) -
清水 伸二, 伊藤 鎮, 福田 理一1983 年 49 巻 7 号 p. 842-847
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリー円板状単一ボルト締結体を対象として,結合面摩擦力などの結合面境界条件を導入して,有限要素法により,締結部結合面の静的挙動について解析した結果次のことが明らかとなった.
(1)締結体厚さ,ボルト頭部寸法,結合面摩擦係数の増大により,結合面の変形およびすべり変位は小さくなり,また結合面の離脱部分も小さくなり,圧力分布はより一様となる.
(2)圧力作用範囲の目安となる圧力円すい半角は,板厚に無関係にほぼ一定となり,板厚の大きいものほど,結合面摩擦係数増大の効果が大きい.
(3)ボルト頭部外径の増大に伴い,圧力作用範囲は直線的に増大するが,頭部外径の増分ほどには増大しない.
(4)結合面摩擦係数の増大に伴い,圧力作用範囲は直線的に増大する.
(5)結合面の変形は,締結体よりベースの縦弾性係数の影響をより大きく受ける.
(6)締結体の縦弾性係数の増大に伴い圧力作用範囲は直線的に増大し,ベースの場合は直線的に減少する.また,ベースの縦弾性係数が大きいほど締結体材質の影響を受けにくく,締結体の縦弾性係数の小さいほどベース材質の影響を受けにくい.抄録全体を表示PDF形式でダウンロード (1114K) -
佐藤 耕吉, 山本 富才1983 年 49 巻 7 号 p. 848-853
発行日: 1983/07/05
公開日: 2010/01/20
ジャーナル フリー4種の金属片(長さ30mm,高さ4mm)を砥石(厚さ2.5mm)半径方向定荷重送りで乾式研削切断した結果,次のような特性をもつことを見い出した.
(1)各材質とも送り荷重W(1～3kg)を大にすると研削率Mは大になるが,M∝Wn(n>0)において,軟鋼:n>1,黄銅と銅:n=1,アルミニウム:n〓1(砥石結合剤による)となる.
(2)砥石周速V(2100～4700m/min)の効果は△M/ΔVにおいて,軟鋼:負(Vを大にするとMは低下,黄銅:正(ΔVに比例してΔMは増加),銅:0または正(砥粒粒度による),アルミニウム:0となる.
(3)軟鋼は作動条件により砥石作業面状態を著しく変化させ,砥石の自生作用的切れ味変化の周期現象を呈する作動条件がある.
(4)アルミニウムは溶着作用による砥石の破壊をもたらしやすい.
(5)研削比Gと研削率Mは反比例関係にあり,定数C=GMは作業能率性能を表す特性値とすることができる.
(6)全般に砥粒大で結合度大の砥石の能率性能はそうでない砥石の約2倍のC値をもつが,各材質に対する能率は砥石規格要因よりも材質の被削性に左右され,黄銅は軟鋼よりも約50倍のC値をもち,銅とアルミニウムはその中間に位置する.抄録全体を表示PDF形式でダウンロード (1033K) -
クロスポリシャによるSiウエハのポリシング宇根 篤暢1983 年 49 巻 7 号 p. 854-859
発行日: 1983/07/05
公開日: 2010/01/20
ジャーナル フリーSilicon wafers are usually polished mechanochemically using a cloth polisher. Their surfaces are not damaged, but their flatness deteriorates with polishing time. To investigate the cause of flatness degradation, the surface shapes generated in silicon wafers with plane, cone-shaped and saucer-shaped polishers were simulated by measuring polisher deformation characteristics and silicon wafer polishing rate. A difference between the simulated and experimental values was seen, and this difference, or flatness degradation, resulted from the fact that: (1) A porous polyurethane cloth polisher has viscoelastic characteristics. (2) The work is inclined by polishing force, which consists of frictional force and squeezing force caused by the work edge. (3) Viscous deformation due to work inclination becomes larger in the center region, as compared with the inner and outer region, of a polisher. (4) As a result, a non-linear average pressure distribution occurs over the work, where the pressure is higher on the outer periphery of the work. A very flat surface could be obtained when the work inclination decreased through making the work plate support point low or when a very slightly inclined cone-shaped polisher was used.抄録全体を表示PDF形式でダウンロード (1159K) -
塩谷 景一, 牧之内 三郎, 山縣 敬一1983 年 49 巻 7 号 p. 860-864
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a method of generating a curved surface by using the data at the arbitrarily distributed points. In this method, the heights of the surface at the rectangular grid points are firstly estimated from those data at the arbitrarily distributed points, and then a curved surface is generated from the estimated heights at the grid points by using Bezier, B-spline or Coons rectangular patches. For assuring the validity of the method in this paper a curved surface is generated by using the data at the arbitrarily distributed points of an analytically well-known surface, and the error of the generated surface is analyzed. Since arbitrarily distributed data points can be handled for generating a curved surface, it is possible to collect more data from the surface of a clay model with higher curvature.抄録全体を表示PDF形式でダウンロード (819K) -
研削砥石によるツルーイング法が砥石機能と加工精度に及ぼす影響橋本 福雄, 金井 彰, 宮下 政和1983 年 49 巻 7 号 p. 865-870
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーFor realization of high precision centerless grinding, high rigidity and high precision servo-controlled regulating wheel spindle system is newly designed. On this system truing method of regulating wheel is studied for accuracy and the followings are concluded: (1) Truing accuracy with single point diamond dresser is by far lower in roundness and profile comparing with motion accuracy of wheel spindle and dresser feed. (2) Newly proposed truing method of regulating wheel with grinding wheel gives higher shape accuracy by one order comparing with conventional method. (3) Ground surface of regulating wheel is preferable in both friction and wear characteristics, and redressing life is much extended. (4) Ground regulating wheel excellently improves machining accuracy. For example, roundness error improves from 1.7 μm to 0.2 μm and surface roughness from 0.32 μmRa to 0.12 μmRa in comparison with the case of conventionally trued regulating wheel.抄録全体を表示PDF形式でダウンロード (1257K) -
新井 泰彦, 倉田 忠雄1983 年 49 巻 7 号 p. 871-875
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis paper deals with a tachometer by using the basic property of the moiré profile. This tachometer has the moiré profile detecting device with two radial gratings and the photo-transistors and the simple operational circuits mathematically analyzed. In terms of the experimental results, it is revealed that the linearity of the output for the speed of rotation is less than one percent variation, and that the ripple content of the output is one-fifth of the conventional tacho-generator. The experimental results are in good agreement with the theory based on the simulational model. In addition to the reduction methods of the ripple content at the low speed of rotation is suggested.抄録全体を表示PDF形式でダウンロード (883K) -
連接棒ボルトの強度設計のシステム化萩原 正弥1983 年 49 巻 7 号 p. 876-882
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis study aims at the development of the strength design system applied to the general bolted joints, and as a case study, the strength design. method for the connecting rod joints has been treated. From the standpoint of the systematization on the strength design for the general bolted joints, the connecting rod joint is modeled to the prismatic parts clamped by a set of bolt and nut (singlebolted joint model), and the strength design of the connecting rod bolts is discussed through the strength design for the obtained model. Furthermore, the experiments concerning the stress on the bolt are performed in order to investigate the applicability of the newly developed method, and the results by the above-mentioned method are compared with the experimental results. The main conclusions are as follows: (1) The strength design method is developed where the connecting rod joint is modeled to the single-bolted joint. (2) The experiments concerning the stress on the connecting rod bolts are performed, and the analytical results by the above-mentioned method show a good agreement with the experimental results.抄録全体を表示PDF形式でダウンロード (1084K) -
小薮 国夫1983 年 49 巻 7 号 p. 883-888
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリー電子ビーム露光によるフォトマスク作製において微細パタン形成上間題となる近接効果について実験的検討を加え次の結果を得た.
(1)自己近接効果はラインパタンで4μm,正方形パタンで8μmから現れはじめる.これは後方散乱の影響範囲が4μmの範囲に及ぶことを示しており,二重放物線近似モデルの最大後方散乱範囲の定数b=4μmが決まる.
(2)相互近接効果はパタン間隔が3μm以下の場合に現れ,1μm以下で急激に強くなる.近接した二つのパタンの寸法比が10:1μmと大きい場合,1μmパタンに近接効果は強く現れる.これは二重放物線近似モデルからも同じ結果が示される.
(3)PMMAに対し100倍の感度をもつFBMレジストの近接効果はPMMAの約1.2倍以下で,近接効果はレジストの感度にあまり依存しない.
また,単一走査ビームの露光感度分布を二重放物線で近似するモデルでは,既知の露光条件を計算式に代入するだけで任意点の露光強度が求められ,計算結果と実験値とは比較的よく一致することがわかつた.抄録全体を表示PDF形式でダウンロード (896K) -
加工の容易さと静剛性の向上を目的とするものの試作研究局 又太郎, 山本 晃, 蚊戸 俊一, 竹内 克之1983 年 49 巻 7 号 p. 889-895
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーTwo types of hydrostatic lead screws, designed aiming at easier manufacture and higher statical stiffness, were manufactured on trial. In Type 1 the nut is constructed by four sector shaped pieces and four plates sandwiched in four spaces between the aforementioned pieces in order to form the four sector type recesses. In Type 2 the nut is a single block, but full area of screw surfaces are utilized as recesses by sealing at crests and roots of nut threads. Main results of theoretical calculation and experiments on the statical stiffness are as follows: (1) In Type 1, the experimental value of statical stiffness is 40 N/μm, the theoretically calculated value is 53 N/μm, and their ratio is 0.75, being regarded as improved against the case of the same type screws in the previous report. (2) In Type 2, the experimental value of statical stiffness is 15 N/μm, the theoretically calculated value is 86 N/μm, and their ratio is 0.17. The reason of this undesirable results of the experiment is considered mainly due to leakage of hydraulic oil through seals.抄録全体を表示PDF形式でダウンロード (1245K) -
松岡 信一1983 年 49 巻 7 号 p. 896-903
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis study of solidifying mechanism of polymeric powder in cold compaction molding, made consideration in light of dynamics based on the results of experiments and explained the mechanism of solidification visually and theoretically. (1) It was shown that the more the compacting pressure is, the more indistinct the boundaries between adjacent particles are made, the wider the fusion spots become, and the higher the strength of the cold compacted products become, and that the dynamically compacted products show markedly better fusion between adjacent particles and much higher strength than the statically compacted ones. (2) Furthermore, among compacting pressure Pc, tensile strength σB, and average density of products ρ, empirical formulae of σB=K3(Pc)n3 and σB=K4(ρ)n4 were obtained. (3) In various model experiments, the deforming behavior of particles involved in compaction was observed visually, and as a result, with particles crushed greatly in layer with the increase of compacting pressure, an empirical formula of R=a(Pc)-nR was obtained between the crushed particle ratio R and the compacting pressure Pc, while an empirical formula of T=b(Pc)-nT was obtained between the thickness of products T and the compacting pressure Pc. (4) Furthermore, it was found that in compaction molding on single punch, particles are crushed more on the punch side than on the die side, while they are evenly crushed generally in compaction molding on both side punch.抄録全体を表示PDF形式でダウンロード (1590K) -
益田 正, 梶谷 誠, 豊田 幸司1983 年 49 巻 7 号 p. 904-909
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a new automatic calibration system for polygon mirrors. This system consists of the following four subsystems: (a) a precise rotary mechanism, (b) a rotary magnetic scale for angular standard, (c) a special photo-electric autocollimator which enables a dynamic measurement and (d) a mini-computer system which controls the compiling and handling of data. The basic principle of the system depends on the selfchecking-method, so that both the polygon mirror and the standard rotary scale are calibrated simultaneously. The system adopts a time-conversionmethod to detect slight angular difference with high resolution. By way of an example, a 12-sidedpolygon has been calibrated on the system. The results obtained are as follows: (1) The calibration can be done automatically in a short time without skill, excepting the manual operation of setting a polygon relatively for the magnetic scale. (2) 959% confidence interval of instrumental error calibrated on the system is within ±0.07 seconds of arc.抄録全体を表示PDF形式でダウンロード (1097K) -
星 鐵太郎, 馬場 逸雄, 松本 匡以1983 年 49 巻 7 号 p. 910-917
発行日: 1983/07/05
公開日: 2010/01/20
ジャーナル フリーTo develop milling tools for high-rate machining of steels, prototype cutters with a special double-rake edge design using the SWC (Silver White Chip) cutting principle have been evaluated in milling tests of the low carbon steel SS 41 generally used for weldments and the SCM 440 chromium-molybdenum steel. Three kinds of indexabletype prototype cutters with ISO M 2 grade inserts have been tested: they are, so-called “type-U” facemilling cutter intended for rough machining of the low carbon steel, “type-S” face-milling cutter for medium carbon steels and alloy steels, and “typeSL” cutter for slot milling operation. Test results show that when proper cutting conditions are selected so as to form the built-up edge on the primary rake face, the cutting edge is free from the fragile chipping, and therefore the high-rate milling is possible. A double-rake edge of the prototype cutters is operated normally and attain tool life from 2 000 to 10 000 cuts per edge at the metal removal rate several times greater than that of a conventional cutter edge. Machining power required by the SWC cutters is reduced by 20 to 38% to that by the conventional cutter. It will be possible to design cutters for practical use based on those test results.抄録全体を表示PDF形式でダウンロード (1634K) -
砥石が打撃的研削をする場合の研削機構解析横内 弘宇, 小野内 善之, 菊地 千之1983 年 49 巻 7 号 p. 918-926
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーGrinding mechanisms are theoretically analyzed when tolerably high amplitude of wheel vibration causes the wheel to knock the work once a revolution as usually seen in the snagging operation. Insisting the wheel on a given predetermined vertical feed rate pattern which is assumed for a practical motion of the wheel during knocking (grinding), grinding mechanism is represented such as configuration and area of the wheel-work contact, instantaneous metal removal rate, cumulative volume removed, undeformed chip sectional area, and grinding forces in one blow grinding process.Taking a set of reasonable numerical values, the analysis is examined and compared with that of no vibration taken account. The instantaneous metal removal rate per unit contact area is identical with the vertical feed rate. Undeformed chip sectional area and grinding force is uniformly distributed on the contact face. Larger mean undeformed chip sectional area than that of the analysis without vibration is resulted in fairly decreased power consumption per unit metal removal rate. Instantaneous equivalent stiffness of contact between wheel and work is estimated which is extremely higher than that of without vibration.抄録全体を表示PDF形式でダウンロード (1393K) -
ベルト研削に関する研究(第2報)松井 正己, 庄司 克雄, 田中 和彦1983 年 49 巻 7 号 p. 927-931
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーIt was found in the previous report that the elastic deformation of contact wheel performs a significant role in belt grinding. This paper deals with the effect on the wear process of coated abrasive belts. The contact-wheel surface grinding was carried out at a fixed infeed, and the changes of belt wear rate and surface topography with grinding time were investigated. Grinding force pulses from individual cutting edges were also observed in a fixed part on the belt surface. The force pulses were obtained by lengthwise grinding of a very narrow workpiece attached to a high-frequency dynamometer. Detail investigations of the change of them with time made clear the rise and fall process of the cutting edges. The results revealed that the wear property is influenced by the contact wheel hardness. With a harder contact wheel the change from old to new cutting edges is smooth and prosperous. On the contrary, too soft a contact wheel brings about flattening or dulling of cutting edges and accounts for the glazed appearance of abrasive belt.抄録全体を表示PDF形式でダウンロード (939K) -
本間 義彦1983 年 49 巻 7 号 p. 932-937
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a simple method to calculate orientation probabilities of works with a conical or cylindrical surface. Important factors to determine probabilities of orientation of rolling works are deceleration of rolling velocity of works and the shape of separatrixes for rolling motion of works. On the other hand, in automatic assembling systems, many works roll simultaneously on a plane of feeder. In such cases, the deceleration is uniformly with any contact surfaces of works. Therefore, probabilities of orientation are calculated by considerations for the shape of separatrixes with rolling motion and considerations for deceleration become useless. The conical surface is divided in equal n parts and the one of parts is considered a small trapezoid for large number of n. The plane of critical angles of the part is given also for a trapezoid. The plane of critical angles of conical surface is given by a fan-shaped plane which is formed by collection of those trapezoids. The plane for cylindrical or circular surfaces is given by a particular case of conical surface. Finally, results of this method are examined by experiments which are performed for some examples.抄録全体を表示PDF形式でダウンロード (956K) -
岡田 昭次郎1983 年 49 巻 7 号 p. 938-940
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (409K) -
渡辺 嘉二郎1983 年 49 巻 7 号 p. 941-948
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (1220K) -
松本 美韶, 藤井 修二1983 年 49 巻 7 号 p. 949-952
発行日: 1983/07/05
公開日: 2009/07/23
ジャーナル フリーPDF形式でダウンロード (664K)
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