AN-309 Transition Curve

AN-309 Transition Curve

When a machine moves along a path where a circular arc meets a linear sector at a continuous path speed a step change in acceleration occurs.

This step change in acceleration can set up vibrations in a machine so is best avoided.

The transition curve facility allows an arc to have an entry and exit spiral section.

In these spiral sectors the curvature changes gradually from zero to the main arc section curvature resulting in a gradual change of acceleration and less machine vibration.

    • Related Articles

    • AN-414 MOVETURN vs MOVECIRC

      This document shows a comparative study between MOVETURN and MOVECIRC within the scope of the experiment.

    • MOVEABS and MOVABSSEQ AN-273

      The MOVEABSSEQ and MOVESEQ commands allow a sequence of 2 to 6 axis movements to be loaded via TABLE values. The moves can be automatically blended together using a circular or spherical arcs. The sequence of points is loaded as a sequence of MOVEABS ...

    • MOVEABS not ending in Target positon

      The cause the problem is that a MOVEABS takes ENDMOVE of the previous move as the start point. When we cancel the move in the MTYPE, it stops before ENDMOVE so it is not a valid start point any more. Here is a possible solution but it is not perfect. ...

    • UNITs vs Arcs question

      In and XY motion system, if you make only linear lines, it does not matter if X and Y UNITS are not the same. But the MOVECIRC and MHELICAL must have the UNITS on X then same as UNITS on Y, otherwise they produce elipses and not circular arcs. The ...

    • Moving traverse from point to point repeatedly

      2 suggestions: 1. Move to positions BASE(0) REPEAT MOVEABS(position1) MOVEABS(position2) UNTIL event=TRUE 2. Move to sensor position1 and position 2 are set to be beyond the sensor postion BASE(0) REPEAT MOVEABS(position1) WAIT UNTIL IN(1)=ON CANCEL ...