Pitch error compensating system
    1.
    发明授权
    Pitch error compensating system 失效
    间距误差补偿系统

    公开(公告)号:US5309367A

    公开(公告)日:1994-05-03

    申请号:US778068

    申请日:1991-12-02

    摘要: A pitch error compensating system compensates for a pitch error of a ball screw of a numerically controlled machine tool. A pitch error calculating means (4) reads a present value from a present value register (3), reads pitch error corrective quantities (.epsilon.n, .epsilon.pn) in a corresponding period, and outputs pitch error corrective quantities as pitch error corrective pulses (CP) at equal intervals in the period. The pitch error corrective pulses (CP) are added to interpolated pulses (CP) by an adder (5). Since the pitch error corrective quantities are not outputted all at once, the machine tool moves smoothly, and the quality of the machined surface of the workpiece is improved.

    摘要翻译: PCT No.PCT / JP91 / 00498 Sec。 371 1991年12月2日第 102(e)1991年12月2日PCT PCT 1991年4月10日提交PCT公布。 公开号WO91 / 16173 日期1991年10月31日。螺距误差补偿系统补偿数控机床的滚珠丝杠的螺距误差。 音调误差计算装置(4)从当前值寄存器(3)中读取当前值,在相应的周期内读出音调误差校正量(epsilon n,εpn),并将音调误差校正量作为音调误差校正脉冲( CP)。 通过加法器(5)将音调误差校正脉冲(CP)加到内插脉冲(CP)上。 由于螺距误差校正量一次不全部输出,所以机床平稳地移动,提高了加工面的质量。