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    • 6. 发明专利
    • System for returning spindle to origin in machine tool
    • 用于将主轴返回到机床中的原理系统
    • JPS58206363A
    • 1983-12-01
    • JP8830882
    • 1982-05-25
    • Mitsubishi Electric Corp
    • NAKAYAMA TAKEO
    • B23Q15/013B23Q15/00G05B19/18G05B19/401G05D3/12
    • G05B19/4015G05B2219/43152G05B2219/50031
    • PURPOSE:To improve return accuracy and shorten the return period of time in a system for returning a spindle to the origin in a numerically controlled machine tool, by providing a suborigin and a near point with respect to the main origin so as to return the spindle to the near point at a high speed, to the suborigin at a medium speed, and to the main origin at the lowest speed. CONSTITUTION:In return operation of a spindle to the origin, an X-axis table 10 is moved at a high speed until a near point signal is detected, and the near point signal K is latched by a latch circuit 64, and thereafter a latched output K0 is inputted to an NC device 32 to be converted to a medium speed command. Then, the initial origin signal G outputted from a rotational angle detector 62 with the origin signal is latched by a latch circuit 66 and a latched signal G1 is inputted to the NC device 32, wherein this initial origin is set as a suborigin. At this time, the table 10 is moved at the lowest speed until the difference E computed by an error counter 58 becomes zero. With this constitution, return accuracy may be improved and the return period of time may be shortened.
    • 目的:为了提高返回精度并缩短在数控机床中将主轴返回到原点的系统中的返回时间,通过提供相对于主要原点的副轨道和近点,以便使主轴返回 以高速度到近点,以中等速度到达低频,并以最低速度到达主要来源。 构成:将主轴返回到原点,X轴台10以高速移动直到检测到近点信号,并且近点信号K由锁存电路64锁存,之后被锁存 输出K0被输入到NC装置32,转换为中速指令。 然后,由具有原点信号的旋转角度检测器62输出的初始原点信号G由锁存电路66锁存,并且锁存信号G1被输入到NC装置32,其中该初始原点被设定为副标准。 此时,表10以最低速度移动,直到由误差计数器58计算的差值E变为零。 利用这种结构,可以提高返回精度,并且可以缩短返回时间。
    • 9. 发明公开
    • Tool touch probe system and method of precision machining
    • Werkzeugtastsystem并进行精密加工的方法。
    • EP0072687A2
    • 1983-02-23
    • EP82304301.3
    • 1982-08-16
    • GENERAL ELECTRIC COMPANY
    • Kelley, John RobertZurbrick, John Ross
    • G05B19/18
    • G05B19/4015G05B2219/37207G05B2219/37231G05B2219/37351G05B2219/49169G05B2219/49392G05B2219/50031Y10T408/172
    • A system and method are disclosed for automatically machining a work piece to precise selectively determined dimensions under computer numerical control in which the cutting tool is set automatically and automatic on-machine inspection is performed of the machined work piece surfaces. Using vibration sensing to detect contact between the cutting edge (32) of the cutting tool and position reference surfaces (164, 166), the cutting edge is calibrated against these surface under closed loop control. The deviation between the programmed and the actual positions of the cutting edge at each reference surface is determined and an initial compensating tool position offset is automatically provided in each axis and is entered into numerical control means. After machining has been initiated, probing of the work piece occurs at least once before the final cut is taken. The tool functions as a tool touch probe during this operation and vibrations are sensed as the calibrated cutting edge is brought into contact with the machined surface. Appropriate tool position offsets are determined and entered into the numerical control means at that time, to assure that the dimensions of the finished surface will conform to the desired dimensions. After final machining has taken place, the finished surface is again probed with the calibrated cutting edge, using vibration sensing. Deviations from the desired dimensions are determined and are indicated together with the allowable machining tolerance for each dimension.