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30 巻, 356 号
選択された号の論文の9件中1～9を表示しています
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古賀 保喜1964 年 30 巻 356 号 p. 685-692
発行日: 1964/09/05
公開日: 2009/10/08
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中村 虔一1964 年 30 巻 356 号 p. 693-706
発行日: 1964/09/05
公開日: 2010/01/27
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大石 清, 和田 次助1964 年 30 巻 356 号 p. 707-709
発行日: 1964/09/05
公開日: 2009/10/08
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河村 正弥1964 年 30 巻 356 号 p. 710-721
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーRecentry the author have developed new bearing and seal system, so called “Multiple Plane Bearing”, “Multiple Ring Seal” and “Wire Cloth Bearing”.
The multiple plane radial bearing is consisted with concentric rings of bearing alloy and steel for example. This bearing has many sliding surfaces, and each rings round in independent speed. Then the every surface does not heat or stick, according to the oil film may not be broken. The multiple plane thrust bearing is consisted with many metalic rings that lie side by side in the same axis. Each other rings are made of bearing alloy.
In the same idea the multiple ring seal has been developed. The relative speed of the each sealing surfaces may become slow.
The feature of these bearings and seals may be excellent.
In the next step it was developed the multiple plastic bearings, the multiple wire cloth bearings and the rotary plane bearings. The wire cloth is a very fine metalic cloth. We can use this metalic cloth as bearing metal. It has a special feature as like as oilless bearing. The rotary plane bearing is a combination of the multiple plane bearing and the ball bearing or roller bearing.
At last, the fine wire cloth will be applied as sliding surface of the machine tools. The combination of the two surfaces of wire cloth and spring steel band has an interesting feature as a guide surface of the machine tools.抄録全体を表示PDF形式でダウンロード (7931K) -
ホットプレスして焼結したセラミック工具の切削性能中山 登, 林 宏, 梶原 弘1964 年 30 巻 356 号 p. 722-726
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーThe effects of the structure, chemical component, particle size and orientation of the crystal grain on the cutting performance of a hot pressed ceramic tool are studied.
The results obtained are as follows :
1) Hot pressed ceramic tool has the superior cutting performance compared with the cold pressed one at the cutting speeds higher than 600 m/min, but the former is inferior to the latter at the cutting speeds lower than 500 m/min. This cause is not clarified for lack of data about the hysteresis of the tested tools during the manufacturing process.
2) The optical axis (c-axis) of α-alumina in the hot pressed ceramic tool is orientated perpendicular to the pressing direction. The bending strength of the tool along the direction perpendicular to the optical axis is found higher than that along the parallel direction. So the rate of cratering of the hot pressed ceramic tool is greater than that of the flank wear.
3) To improve the cutting performance of the ceramic tool, it is necessary that the crystal grains have uniform and small sizes with the same direction of optical axis, and contain less amounts of spinel and glass materials.抄録全体を表示PDF形式でダウンロード (3550K) -
熱亀裂の生成とその形態 (主として逃げ面の亀裂について)杉田 忠彰, 山田 巌1964 年 30 巻 356 号 p. 727-732
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーThis paper informs about progressive process and configuration of thermal cracks which produce in the ceramic face milling cutter.
Each crack passes through the grain boundary and the initiated crack on the tool surface is enlarged by friction between tool and workpiece. Consequently, the crack change into enlarged crack observed as a groove on the surface. Depth of the crack is shallow, range of 0.015 0.02mm, and each distance between the cracks increase with proceeding of the tool wear.抄録全体を表示PDF形式でダウンロード (7683K) -
衝突後液流を生じるばあいの冷却能力と噴霧条件の影響山本 明1964 年 30 巻 356 号 p. 733-742
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーAs a basic study of the mist cooling, mist flow from spray-gun is collided with a plate, and its local heat transfer coefficient α is measured along its flow spreading over a plate. In respect of cooling power and cooling range to be used, the factors of mist generation are discussed. Further, the reason why the mist has a strong cooling power is analyzed.
(1) When mist turns into re-liquidified flow along a plate after collision, cooling power and cooling range increase.
(2) Cooling strength, that is α, takes a maximum value in the circle which mist covers. This value of aquaous liquid mist under an optimum conditions is found in 2 or 3 cal/cm2 s °C. Mist surpasses a flood of liquid in cooling properties.
(3) Strong cooling power is chiefly attribute to a very high exit speed of mist as a result of acceleration by air. On the contrary, mist from airless-gun has a poor cooling strength and moreover only small cooling scope.
(4) Under air pressure with easy to get p, increased liquid rate q by imposed backpressure facilitates to get a high cooling power. Recomended applying conditions for aquaous fluid is follows : p = 23kg/cm2, q>50cc/min, mist outlet angle is 30°60° and cooling scope must be less than threefold of the mist circle in diameter.抄録全体を表示PDF形式でダウンロード (1790K) -
力学的諸量の推移と工具刃先における荷重分布北条 英典1964 年 30 巻 356 号 p. 743-754
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーThe load distributions along the cutting edges were induced from mutual relations among shearing force, side force, holding force produced by a fixed stripper plate, axial force and bending moment in the case of low speed shearing at room temperature for the straight parallel cutting edges. As a result of this, mechanical characters of shearing phenomenon could be clarified. The results obtained are as follows :
(1) In the shearing process of elastic deformation, the forces and the bending moments are proportional to the shearing force, and the ratios of these quantities to the shearing force are less than 0.25.
(2) The principal components of the side forces are frictional forces produced by the vertical forces acting on the parts compressed by the cutting edges. Accordingly, it can be said that the portion between the edges of punch and die has a tendency to be extruded.
(3) The vertical forces along to the parts compressed by the cutting edges act on those parts of which form are similar to triangle having an apex at the cutting edges.抄録全体を表示PDF形式でダウンロード (1897K) -
1964 年 30 巻 356 号 p. 760-761
発行日: 1964/09/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (320K)
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