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37 巻, 435 号
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切削抵抗と切削動力の測定賀勢 晋, 原 利雄, 升田 雅博1971 年 37 巻 435 号 p. 239-244
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーFor the utilization of the self-propelled rotary cutting tool, its cutting forces and power consumption were investigated on turning. The characteristics of the self-propelled rotary tools were compared with those of the rotary tools with the fixed edge and of the conventional cutting tools. The effects of the cutting conditions on the cutting forces and power consump-tion were also investigated.
The following results were obtained.
1) The tangential component of cutting force on turning with the self-propelled rotary tool was less than that of the rotary tool with the fixed edge, while the axial component showed the opposite tendency.
2) The radial component of the rotary tool increased as the cutting speed increased.
3) The rake angle affected the radial component, while no effects were observed on the tangential and axial components.
4) The self-propelled rotary tool showed less power consumption than the rotary tool with the fixed edge.抄録全体を表示PDF形式でダウンロード (2742K) -
精ラップ仕上に関する研究 (第2報)春日 保男, 堤 成晃, 鬼頭 武彦, 水野 稔1971 年 37 巻 435 号 p. 245-252
発行日: 1971/04/05
公開日: 2010/02/15
ジャーナル フリーBased on an examination of the lapping performance of various compounds by the test apparatus previously described, mechanism of cooperation of the powder and the liquid medium in the finishing process is discussed in this paper. According to the force diagram, four distinctive modes of lapping resistance are observed, i.e. the resistance curves are not always fiat even in the lapping stroke at constant speed.
They can tentatively be identified by the mode-a to the mode-d. The mode-a is referred to a group of constant resistance irrespective of the speed, and can be designated as the ' grit or powder mode.' The mode-d is referred to a group of viscous resistance predominated, and can be designated as the ' viscosity mode '. The intermediate modes b and c are the transitions from a to d. The mode-b, observed in a certain viscosity range and in higher pressure, can be designated as the mode-a accompanied by a pressurized medium. The modec is a transition from the a to d or the b to d, and in this state, the mode appears to consist of a liquid and a diminished solid resistance.
It is shown that the lapping performance of a compound is sharply discriminated by these modes and the optimum condition appears to exist around the mode-b. The condition which makes to have this optimum is represented by a parameter υη/ (pdav) _??_5×10-2 under some restrictions in the grit size and the liquid viscosity.抄録全体を表示PDF形式でダウンロード (3300K) -
山本 明, 前田 良昭1971 年 37 巻 435 号 p. 253-260
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーIn this paper, for settlement of the problems involved in many measuring methods of load-ing hitherto reported and contribution to the investigation of the loading process or its insta-bility and to the optimization of the grinding operations, a method of the in-process measure-ment is developed by attending to the magnetic characteristics of loading-metal, and its characteristics and applicability are investigated. The main results are as follows :
1) From the investigations of the basic characteristics of the developed apparatus, it is cralified that the application of Magnetic Recording-Reproducing Principle is available for the in-process measurement of grinding-loading and that the resolving power of this method is superior to that of old ones.
2) From the application study of this method, it is revealed that this method has good applicability and that many available informations such as frequency spectrum of loading, which can't be derived from old methods, can be obtained in process and the behaviors of each loading on grinding wheel surface can be clearly observed with this method.抄録全体を表示PDF形式でダウンロード (2958K) -
歯形の比較酒井 商男, 森田 信義1971 年 37 巻 435 号 p. 261-267
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーA number of tooth profiles of constant torque ratio gears were derived from the funda-mental equations of the gears having a constant torque ratio.
We can expect good properties in these gears, such as insensitivity to errors in center distance, long effective tooth profile, and simplicity in design.
From the investigations on five typical kinds of gear tooth profiles the authors have found that the gearing consisting of an involute follower and its driver and which is named IF in this paper has the best properties.
The authors have derived a simple equation to determine the radius of torque circle of IF gears which have smooth transition of contact from one pair of teeth to the next, and have given an example of an IF gear.抄録全体を表示PDF形式でダウンロード (869K) -
切削における温度・ひずみ速度効果の基礎的研究 (第1報)臼井 英治, 白樫 高洋, 益子 正己1971 年 37 巻 435 号 p. 268-274
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーThe paper describes a methord for obtaing stress-strain characteristics of metals under such conditions that are encountered in a plastic zone of metal machining.
For this purpose, an impact-compression testing machine is designed, which is essentially same as the one used by F.E. Hauser but includes a special stopping-ring device which enables to devide the straining process into small strain increments. Strain-rate and temperature are kept constant during each increment, and thus the final strain state is achieved with various histories of strain-rate and temperature.
The experiments are carried out under strain range 01, strain-rate 0103 1/sec and temperature range 0300°C for annealed non-ferrous material. The results are summarized as follows :
1. Under constant strain-rate and temperature (without annealing effect), the flow stress may expressed as
σ=σ0 (ε/ε0) m (ε/ε0) nexp (α/θ)
where ε, ε, θ are strain, strain rate and absolute temperature respectively, so, so, are re-ferenced values of e, respectively and m, n, α are constants.
2. Under constant strain rate, the equivalence of strain-rate and temperature may be written as
ε/ε0=A exp (-α'/θ) σ, ε=const.
where A is constant. This expression appears same as was predicted by the theory of velocity modified temperature, however, A is the function of flow stress and strain in this paper as opposed to the theory.
3. Under variable strain-rate, the flow stress is not merely determined by strain, strain-rate, and temperature, but it is greatly influenced by the strain rate history to which the material has been subjected during straining.抄録全体を表示PDF形式でダウンロード (2885K) -
平面測定子による平面の測定築添 正1971 年 37 巻 435 号 p. 275-281
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーA study is described of the effect of the surface finish, the measuring force, the work-piece material and the feeler configuration on the accuracy of the length measurement. As-suming that the distribution curve obtained from the profile curve of the surface has a normal distribution, the relation between the applied load and the penetrating depth of the feeler, i.e., the measured size of work-piece, is obtained theoretically in the case of plastic deformation at the microcontacts. On the basis of the statistical analyses of the variation in the begin-ning of contact between the work-piece surface and the feeler, the variation in the measured sizes over an area of a work-piece is also deduced theoretically. The calculated values based on these theories are compared with the experimental data. The present paper deals with the case of the measurement of the flat work-pieces by the flat feeler or anvil. It is found that the larger the surface roughness the larger are the error and the variation of measurement. The feeler having a large flat-ended tip would be expected to have a smaller error and varia-tion than that of a feeler having a small tip.抄録全体を表示PDF形式でダウンロード (3197K) -
岡村 健二郎, 松原 十三生1971 年 37 巻 435 号 p. 282-287
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーA matrix optimizing and data selecting method (MODS method) is introduced to determine a transfer function from a forced vibration experiment. It is expected that the MODS method gives more exact transfer function than the direct itterative method presented by J.R. Lemon. These two methods were applied to the actual forced vibration experiments and were compared each other with respect to the transfer functions obtained. For a simple system, those two methods gave exact transfer functions, however, for a relatively complicated system, it was ascertained that MODS method gave more exact transfer function than the direct itterative method. The results indicates that the MODS method is applicable and effective to determine a transfer function of a general complicated structure from a forced vibration experiment.抄録全体を表示PDF形式でダウンロード (1087K) -
河西 敏雄, 野田 寿一, 井田 一郎1971 年 37 巻 435 号 p. 288-291
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (3085K) -
島村 昭治1971 年 37 巻 435 号 p. 292-299
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (4119K) -
大谷 清作1971 年 37 巻 435 号 p. 300-305
発行日: 1971/04/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (13771K)
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