This paper discusses about the amplitude, colliding force and energy dissipation in a forced colliding vibration system with damper with one impact per a cycle motion. The maximum amplitude of the colliding vibration is greater than double amplitude of no impact vibration. In resonance, when contact time and viscous damping are negligibly small, the amplitude ratio, which is defined by the ratio of peak-to-peak of the colliding vibration to double amplitude of no impact vibration, is linearly proportional to the absolute value of colliding position and the energy dissipated is proportional to the square of the colliding position. In non-resonance, the maximum of specific colliding force, which is defined by the ratio of static pressure to the amplitude of exciting force, corresponds to the maximum energy dissipated. The relation between the specific colliding force or the square of the energy dissipated and the colliding position can be expressed by quadratic functions shown as ellipse.

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In this paper, principles of the gloss measurement by means of fiber optics are given by the calculations based on a proposed glossmeter model. These principles are considered to be helpful to the design of a new type fiber optics glossmeter which is suitable for the measurement of the specular gloss of polished metal surface. From the theoretical calculations, the following results are obtained :
(1) The gloss measured by the fiber optics glossmeter, varies with reflectance of the metal surface and mean slope of the profile of the polished surface.
(2) In the case of using the same polished surface and same kind metal, the gloss increases with the decrease of the roughness of the polished metal surface.
(3) The accurate gloss measurement is achieved only in a certain range of the measuring distance and, at same time, in a certain diameter of unit fiber of the optical fiber bundle having a given total area.

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This paper deals with problems on the process planning, especially the determination of optimum machine tools, which is considered as the bottle neck in optimization of manufacturing process in the integrated manufacturing system for job shop. An idea of optimum manufacturing pattern (OMP) is newly introduced basing on the concept of multi-levels optimization technique in a large system. An algorithm and the computer program, which is named CAPP, are developed to automatically determine the optimum kinds and numbers of machine tools. Some case studies are carried out for actual machine shops which take place in the form of a large number of small batches. The calculated results by the newly developed system (CAPP) show that about 12 % reduction in manufacturing cost may be obtained, therefore the effectiveness and feasibility of the idea OMP is proved.

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Based on the considerations both of present development of information processing, measuring and automatic control technique and of future automatic machining system, a model of computer-adaptive controlled machining system has been proposed and experimented for lathe work as an example. The model system has been constructed connecting a control computer for which a newly developed software system has been implemented with an adaptive controlled lathe.
The experiment has shown that the system, in which main three functions, that is, (1) conversational command and input, automatic tool path decision and direct control (conversational direct computer control), (2) cutting force control by automatic decision of feed rate in rough cutting and (3) dimensional accuracy control by automatic correction of depth of cut in finish cutting, can connectedly operate, is effective to a higher leveled automatic machining.
In this report, method, functions and experimental results of conversational direct computer control are shown, that is, (1) one unique lathe work system, which accepts conversational input data of machining specifications through a typewriter and cuts a part automatically, has been functioned, and (2) as a result of experiments for various workpieces, required time from programming_ till beginning of operation is less than 50% of that of conventional NC lathe, etc.

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The statistic of machined surface asperity heights is very important for the plane joint problems of machine structure. This paper deals with the probability density function of asperity heights, the correlation between the standard deviation and the maximum height, the effect of the stylus radius of profilometer on the statistic of asperity heights and so on. The results are as follows.
(1) The effect of the stylus radius on the statistic of asperity heights is negligibly small.
(2) The probability density function of asperity heights is approximated by the normal distribution, but by the Weibull distribution at the higher range of asperities.
(3) The standard deviation of asperity heights can be estimated by the maximum heights.

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A method to measure local temperature of the cutting tool face is proposed in this research. A fine platinum or constantan insulated wire is embedded in ceramic or carbide tools respectively, to form a thermo couple with chip. The temperature distribution curve shows the same pattern, in spite of the difference of the tool material, the work, and the cutting conditions. The local temperature goes up as the distance from the cutting edge increases, but it reaches the maximum at a certain point, close to the end of tool-chip contact. It is also found that the rate of crater wear depends not only on temperature but also on distance from the cutting edge of tool. The farther from cutting edge of tool, the lower the rate of crater wear at certain temperature.

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Experimental study was investigated on drag of multi-faced rotating mirrors which are used as optical scanners of highspeed cameras and other measuring instruments. Experimentally obtained results show that power spent by drag P is expressed like followings,
P=C_MρR_o⁴Lω³
where ρ; density of ambient fluid, R; radius of the circumscribed circle of the mirror, L; axial length of the mirror, ω; angular velocity of the mirror, and that the relation between the drag coefficient C_M and the number of faces of the mirror N is given as cos²π/N/√C_M=-0.2+logcosπ/N/1-cosπ/N (N≥4)
and in the usual case of N of 2 to 16, C_M calculated by the next equation is approximately true
C_M=4.07/N^1.6 (2≤N≤16).

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The plastic deformation in oblique cutting is considered as a modification of plane plastic flow, since there are no variations of stresses and velocities in the direction parallel to the cutting edge. Based upon this nature, the characteristics of the velocity field are obtained and the relations in stress and velocity along the characteristics are then derived.
The paper also presents a solution for oblique cutting in which perfectly plastic-rigid material and uniform stress distributions are assumed. The solution reduces to the one proposed by E. H. Lee and B. W. Shaffer when inclination angle of the cutting edge becomes zero (two dimensional cutting). The solution appears to be in success for qualitative explanation of experimental results on chip flow direction, shear angle relation and cutting forces as well, however, the quantitative agreement with the experiments is not well enough.

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By putting together a screw plug gauge with a gear, a way of setting by turns the screw flank having accurate pitches as the standard has been worked out. Several pitches of the screw to be measured are measured almost simultaneously by means of the auto-recording equipment with several electric detectors, in comparison with the standard pitches above mentioned. That this method is accurate enough for practical use has been proved by comparing the value of this method with that of the Zeiss U. M. M. using the optical indicator. This method is useful for measuring many screws of the same pitch and a screw with many pitches.

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In the high speed printer the fine quality print is obtained by means of the design on the basis of the dynamic characteristics of the aggregate motion lever for the typehead selection. This paper describes the study of these characteristics by means of the transfer matrix methods for the branch system. The results obtained are as follows :
(1) The analytical method are given corresponding to the figure of the aggregate lever.
(2) The method to obtain the concentrated mass model equivalent to the distributed mass system is expressed.
(3) The theoretical results on the basis of the above-mentioned method agree with the experimental values well.

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