精密機械
Print ISSN : 0374-3543
28 巻, 331 号
選択された号の論文の8件中1~8を表示しています
  • 正野崎 友信
    1962 年 28 巻 331 号 p. 447-453
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 松山 多賀一, 保延 誠
    1962 年 28 巻 331 号 p. 454-456
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
  • 平削り刃面の幾何学的特性
    中崎 正夫
    1962 年 28 巻 331 号 p. 457-461
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
    It can be proved that the mechanics of three-dimensional cutting operations is based on the cutting operations with the straight cutting edge which is wider than the workpiece. In this case there are two cases of planing and turning. The difference of both originates from only whether the motion of a tool is linear or circular.
    The author analyses at first the geometrical characteristics of such a planing tool, and points out that the geometrical characteristics should be the basis of three-dimensional cutting operations by obtaining the general formula of the specific cutting force. And after treating upon the plange-cut turning, the results will be extended to the general case, namely the convensional cut with a tool having both side-cutting edge and end-cutting edge.
    In tie Part 1 only the geometrical characteristics of the foregoing planing tool is treated.
  • 平削り刃面切り屑干渉面上の切り屑の運動学
    中崎 正夫
    1962 年 28 巻 331 号 p. 462-467
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
    In orthogonal cutting, every chip produced by the planing tool having a straight cutting edge which is wider than the workpiece flows straightly along the direction normal to. the cutting edge on the tool face but in three-dimensional cutting the chip flow is curved on the tool chip interface of a oblique tool because of the side-sliding of chip depending on the geometrical characteristics of its three-dimensional tool face.
    Here the author deals with the kinematics of a chip on the tool-chip interface in planing showing the theoretical formula of chip-flow direction.
  • 亀裂型切削
    鴨川 昭夫
    1962 年 28 巻 331 号 p. 468-477
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
    以上のプラスチックに対する2次元切削実験の結果を総括すると次のようになる。
    1) プラスチックの種類によつて切り屑の生成機構が異なる。
    2) 切削角,切削速度,切込みの関係によつて,流れ型切削と亀裂型切削とが行なわれる。
    3) アクリル樹脂・ナイロンの場合,切削角を大きくして切削すれば,切削速度と切込みの大小に関係なく流れ型切削となる。
    4) エポキシ樹脂・ナイロン・アクリル樹脂は,切削角を小さく切削速度を上昇し切込みを増大すれば亀裂型切削こなりやすい。
    5) 亀裂型切削を行なうと切削抵抗は減少する。この原因は,切削面積の減少と亀裂が入ることによると考えられる。
    6) 亀裂型切削が行なわれるときの切削状況を顕微鏡で観察すると,被削材料に亀裂が入りこれが成長して行なわれることがわかつた。
  • 多点衝突定常運動
    石原 信一
    1962 年 28 巻 331 号 p. 478-484
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
    In multi-point-collision steady-state motion the pallet and star wheel strike each other only once on each contact surface, and on more than two different contact surfaces successively during the advance of 'a single tooth of the star wheel. This type of motion is encountered w hen the moment-of-inertia of the pallet is very small as compared to that of the star wheel.
    The purpose of this paper is to establish theoretically the pattern of this steady-state motion and to provide methods of evaluating the dynamical characteristics of the mechanism.
    Both approximate and exact methods are presented, and linear simultaneous difference equations are applied to handle problems of this type mathematically.
  • 2点衝突定常運動
    石原 信一
    1962 年 28 巻 331 号 p. 485-491
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
    The two-point-collision steady-state motion has been well-known, and often considered to be the only possible form of steady-state motion relative to the pallet and star wheel mechanism.
    Problems in this steady-state motion will lead to the solution of the quadratic equation, which is designated as the characteristic equation for two-point-collision steady state motion. In case the characteristic equation has a single positive root, this type of steadystate motion can exist. Various relationships as to the performance and characteristics of the mechanism have been derived assuming the existence of this pattern of steady-state motion.
    Under a particular condition a motion is found in which intervals of time between collisions are identical. This is called the equiperiodic motion for which the relationships above stated can be simplified and expressed directly in terms of the geometrical and physical parameters, helping conceive a general idea concerning the effect of these parameters on the performance characteristics of the mechanism.
  • 1962 年 28 巻 331 号 p. 493-496
    発行日: 1962/08/05
    公開日: 2009/06/30
    ジャーナル フリー
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