3 MAJOR POSITIONING CONTROL
3.2 Positioning Data Setting
109
3
3-axis helical interpolation control with sub point specified
In the 3-axis helical interpolation control, the circular interpolation control is performed using two axes of the three axes. The
remaining axis is used for Helical control or Tangent control.
For details on the interpolation control, refer to the following.
X axis: Reference axis, Y axis: Circular interpolation axis, Z axis: Linear interpolation axis
Speed of the helical interpolation control
The circular interpolation control (Reference axis
Composite speed of the circular interpolation axis) is the target of the
command speed of the 3-axis helical interpolation control.
Control
details
Control overview
Positioning path
Helical control
Draws a helical path by following the linear interpolation
axis (linear control) to the circular interpolation control.
■
Unit setting
• Reference axis: mm/inch, pulse
• Circular interpolation axis: The same as the reference
axis
• Linear interpolation axis: mm/inch, pulse
Tangent control
Keeps the direction of the workpiece against the center
point of the circular interpolation control by following the
value of the linear interpolation axis (degree) to the
circular interpolation control. The figure shown on the left
is an example in which the direction of the workpiece is
kept to the direction of the tangent.
■
Unit setting
• Reference axis: mm/inch, pulse
• Circular interpolation axis: The same as the reference
axis
• Linear interpolation axis: degree
Z axis
Z axis
Y axis
X axis
(mm/inch/pulse)
Start point
End point
Y axis
End point
Start point
X axis
Z axis
(degree)
Z axis
Y axis
X axis
End point
A linear interpolation axis tracks
the movement of circular
interpolation control.
The command speed of this control
is same as the speed of circular
interpolation control.
Start point
Summary of Contents for MELSEC iQ-R RD75P4
Page 1: ...MELSEC iQ R Positioning Module User s Manual Application RD75P2 RD75P4 RD75D2 RD75D4 ...
Page 2: ......
Page 13: ...11 MEMO ...
Page 19: ...17 CONTENTS INDEX 588 REVISIONS 592 WARRANTY 593 TRADEMARKS 594 ...
Page 498: ...496 13 PROGRAMMING 13 2 List of Labels Used ...
Page 503: ...13 PROGRAMMING 13 4 Program Example 501 13 ...
Page 514: ...512 13 PROGRAMMING 13 4 Program Example Restart program Parameter data initialization program ...
Page 515: ...13 PROGRAMMING 13 4 Program Example 513 13 Flash ROM write program Error reset program ...
Page 516: ...514 13 PROGRAMMING 13 4 Program Example Stop program ...
Page 565: ...APPENDICES Appendix 4 Operation Examples of When the Remote Head Module Is Mounted 563 A ...
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