| 摘要 |
<p>A quilting machine (10) is provided having at least one set of single needle stitch forming elements. The stitch forming elements include a needle (36) and a looper (39) mounted on separate heads (35, 38) that are independently moveable on a bridge (30) transversely relative to the panel. The bridge (30) is longitudinally moved by a servo (32) and the heads (35, 38) are transversely moved on the bridge (30) by separate servos (43, 44). A controller (60) drives the servos to chain stitch patterns and differentially move the heads transversely to account for transverse needle deflection. The drives of the needle and looper are phased to compensate for longitudinal needle deflection. The controller may store empirically determined data and respond to control signals and/or sensors (81, 82) to determine or predict deflection and calculate needle deflection compensation.</p> |
