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    Method and program for calculating maximum depth of cut without self-excited vibration of cutting tool
    1.
    发明授权
    Method and program for calculating maximum depth of cut without self-excited vibration of cutting tool 有权
    用于计算切削刀具无自激振动的最大切削深度的方法和程序

    公开(公告)号：US07500812B2

    公开(公告)日：2009-03-10

    申请号：US11698109

    申请日：2007-01-26

    申请人： Hideaki Onozuka ,  Tomu Kato ,  Koji Utsumi

    发明人： Hideaki Onozuka ,  Tomu Kato ,  Koji Utsumi

    IPC分类号： G06F19/00

    CPC分类号： G05B19/40937 ,  G05B2219/49237 ,  Y02P90/265 ,  Y10T409/303808

    摘要： A method for calculating depth of cut without any milling self-excited vibration. An initial value for machining-surface-perpendicular depth of cut is set. A cutting start angle and cutting end angle for a cutting edge is obtained, based on the initial value. A machining-surface-perpendicular depth of cut that causes no self-excited vibration is calculated. The maximum depth of cut that corresponds to the stability limit of a milling self-excited vibration is calculated, by repeating the calculation while modifying the initial value until the difference between the initial value and the calculation result becomes the same as, or smaller than, a given value. As a result, the stability-limit depth of cut is preliminarily analyzed to the milling self-excited vibration in consideration of a pick feed, the gradient angle of a workpiece, and a machining-surface curvature radius, so that man-hours required for creation and modification of NC data can be reduced.

    摘要翻译： 一种计算切削深度的方法，无需任何铣削自激振动。 设定加工面初始值 - 垂直切割深度。 基于初始值获得切削刃的切削起始角和切削端角。 计算出不产生自激振动的加工面垂直切削深度。 通过在修改初始值的同时重复计算直到初始值和计算结果之间的差值变得等于或小于该值，计算对应于铣削自激振动的稳定极限的最大切削深度， 一个给定的值。 结果，考虑到拾取进给，工件的倾斜角和加工表面曲率半径，预先分析了切削的稳定极限深度对于铣削自激振动，从而所需的工时 可以减少NC数据的创建和修改。

    Method and program for calculating maximum depth of cut without self-excited vibration of cutting tool
    2.
    发明申请
    Method and program for calculating maximum depth of cut without self-excited vibration of cutting tool 有权
    用于计算切削刀具无自激振动的最大切削深度的方法和程序

    公开(公告)号：US20070179661A1

    公开(公告)日：2007-08-02

    申请号：US11698109

    申请日：2007-01-26

    申请人： Hideaki Onozuka ,  Tomu Kato ,  Koji Utsumi

    发明人： Hideaki Onozuka ,  Tomu Kato ,  Koji Utsumi

    IPC分类号： G06F19/00

    CPC分类号： G05B19/40937 ,  G05B2219/49237 ,  Y02P90/265 ,  Y10T409/303808

    摘要： There is provided a method for calculating depth of cut without any milling self-excited vibration, in consideration of a machining condition, the rigidity of a machining tool, the machinability of a material, and the like; in the method, an initial value for the machining-surface-perpendicular depth of cut is firstly set, by utilizing as input values the curvature radius of a machining surface, a tool radius, a pick feed, the gradient angle between the machining surface and a rotation axis of the tool, and the number of tool edges; a cutting start angle and a cutting end angle for a cutting edge is obtained, based on the initial value; the machining-surface-perpendicular depth of cut that causes no self-excited vibration is calculated; and the maximum depth of cut that corresponds to the stability limit of a milling self-excited vibration is calculated, by repeating the calculation while modifying the initial value until the difference between the initial value and the calculation result becomes the same as or smaller than a given value. As a result, in gradient-surface milling processing by use of a rotating tool, the stability-limit depth of cut is preliminarily analyzed to the milling self-excited vibration in consideration of a pick feed, the gradient angle of a workpiece, and a machining-surface curvature radius, so that the number of man-hours required for creation and modification of NC data can be reduced.

    摘要翻译： 考虑加工条件，加工工具的刚性，材料的机械加工性等，提供了一种用于计算切削深度的方法，而不需要任何铣削自激振动。 在该方法中，首先通过利用加工面的曲率半径，刀具半径，拾取进给，加工面与切削面之间的倾斜角度作为输入值，设定加工面垂直切削深度的初始值 刀具的旋转轴线和刀刃数量; 基于初始值获得切削起始角度和切削刃的切削端角度; 计算不产生自激振动的加工面垂直切削深度; 并且通过在修改初始值的同时重复计算，直到初始值和计算结果之间的差值变得等于或小于一个来计算与铣削自激振动的稳定极限对应的最大切削深度 给定值。 结果，在通过使用旋转工具进行的梯度表面铣削加工中，考虑到拾取进给，工件的倾斜角和工件的倾斜角度，预先将切割的稳定极限深度分析为铣削自激振动 加工表面曲率半径，从而可以减少创建和修改NC数据所需的工时。

    Screw compressor and method of manufacturing rotors thereof
    4.
    发明授权
    Screw compressor and method of manufacturing rotors thereof 有权
    螺杆式压缩机及其转子的制造方法

    公开(公告)号：US07044724B2

    公开(公告)日：2006-05-16

    申请号：US10616972

    申请日：2003-07-11

    申请人： Kazuhiro Matsumoto ,  Tomu Kato ,  Hirotaka Kameya

    发明人： Kazuhiro Matsumoto ,  Tomu Kato ,  Hirotaka Kameya

    IPC分类号： F03C2/00 ,  F04C18/00

    CPC分类号： B23F15/08 ,  B23C3/32 ,  F04C18/084 ,  F04C18/16 ,  F04C2230/10 ,  Y10T29/49316 ,  Y10T29/49332 ,  Y10T29/49336 ,  Y10T409/303752 ,  Y10T409/303808

    摘要： A screw compressor comprises a casing, and a male and a female rotor formed with axially twisted screw grooves and accommodated in the casing, the both rotors being rotated by timing gears fixed to the respective rotors while a desired minute gap is kept therebetween, and a method of manufacturing rotors therefor. In the screw compressor, the male and female rotors formed with axially twisted screw grooves in the casing comprise concave stripes having a minute depth and provided on the respective screw grooves to extend along directions of twist thereof, and leakage of a compressed air is less to give a high compression efficiency.

    摘要翻译： 螺杆式压缩机包括壳体和形成有轴向扭转螺旋槽并且容纳在壳体中的阳转子和阴转子，两个转子通过固定到相应转子的定时齿轮旋转，同时保持期望的微小间隙，并且 制造转子的方法。 在螺杆式压缩机中，在壳体中形成有轴向扭转的螺纹槽的阳转子和阴转子包括具有微小深度的凹形条，并且设置在相应螺纹槽上以沿其扭转方向延伸，并且压缩空气的泄漏少于 给予高压缩效率。