| 摘要 |
<p>This invention relates to an acceleration/deceleration control system of a numeric controller for effecting acceleration/deceleration control of a tool in the vicinity of a stroke end. The system makes it possible to move the tool by utilizing the stroke to maximum. The tool moves along a path (1) within a region (20) encompassed by a stroke end (2), and executes machining such as cutting. The movement of the tool is effected by the numeric controller in accordance with a machining program. The tool starts from the start point (P1) and moves along machining blocks (N1, N2, ..., N10) to an end point (P2). The tool moves on the basis of ordinary feed speed control in zones other than the machining blocks (N5 and N6). In the zone of the machining block (N5) near the stroke end (2), however, the tool is decelerated to a very low speed before it reaches a point (P3) of the stroke end (2). After moving from a point (P3) to a point (P4), the tool goes outside the stroke end (2). It is again accelerated according to the ordinary feed speed control when entering the block (N6) again. <IMAGE></p> |
