公开(公告)号：US3735104A

公开(公告)日：1973-05-22

申请号：US3735104D

申请日：1971-09-13

Applicant: SAAB SCANIA AB

Inventor： HOLMGREN P

IPC: G05B19/416 ,  G06F7/68 ,  G06F15/46

CPC classification number: G06F7/68 ,  G05B19/416 ,  G05B2219/43187

Abstract: In a numerically controlled machine tool in which a fundamental pulse frequency determines speed of cutting tool motion along an axis, and pulses are distributed to axes according to programmed direction of cutting tool movement, successive pulses are counted into successive equal groups, each containing a number of pulses which is a multiple of the number of axes. The number of possible pulse distributions in a group is limited; hence an augmenting pulse frequency can be precomputed for each possible distribution, based on a relationship between total stairstep motion distance signified by pulses of the group and corresponding direct distance. For each group, pulses of the proper augmenting frequency are injected between pulses of the fundamental frequency so that for a given fundamental frequency speed in the same in any direction.

Abstract translation: 在数控机床中，基本脉冲频率确定沿着轴线切割刀具运动的速度，并且根据编程的切削刀具运动方向将脉冲分布到轴上，连续的脉冲被计数为连续的相等的组，每个包含数字 的脉冲数是轴数的倍数。 组中可能的脉冲分布的数量是有限的; 因此，可以基于由组的脉冲和相应的直接距离表示的总的步行运动距离之间的关系，针对每个可能的分布预先计算增强脉冲频率。 对于每个组，适当增强频率的脉冲在基频的脉冲之间注入，使得对于给定的基频频率在任何方向上相同。