3.2 Teaching
3-7
n
Spline Motion Type
When performing operations such as welding, cutting, and applying primer; using the spline
motion type makes teaching for workpieces with irregular shapes easier. The path of motion is
a parabola passing through three points. When spline motion is used for teaching a robot axis,
the move instruction is MOVS.
Single Free Curve
When a single free curve movement is required, teach the spline motion for three points, P1 to
P3, as shown in the figure below. If joint or linear motion is taught at point P0, the point before
starting the spline motion, the manipulator moves from P0 to P1 in a straight line.
Continuous Free Curves
The manipulator moves through a path created by combining parabolic curves. This differs
from the circular motion type in that steps with identical points are not required at the junction
between two free curves.
When the parabolas overlap, a composite motion path is created.
Motion Type for a Single Free Curve
Point
Motion Type
Instruction
P0
Joint or Linear
MOVJ
MOVL
P1
P2
P3
Spline
MOVS
P4
Joint or Linear
MOVJ
MOVL
Motion Type for Continuous Free Curves
Point
Motion Type
Instruciton
P0
Joint or Linear
MOVJ
MOVL
P1
P2
P5
Spline
MOVS
P6
Joint or Linear
MOVJ
MOVL
Summary of Contents for XRC 2001
Page 4: ...XRC Operator s Manual for Spot Welding ii MOTOMAN NOTES ...
Page 22: ...x ...
Page 25: ...1 3 Programming Pendant 1 3 1 3 Programming Pendant Programming Pendant ...
Page 32: ...2 2 Turning on the Servo Power 2 4 ...
Page 34: ...3 1 Manipulator Motion 3 2 ...
Page 52: ...4 2 Playback 4 2 ...
Page 62: ...5 4 Welding Test 5 10 ...
Page 78: ...7 3 Cutting Test 7 6 ...
Page 84: ...8 4 Welding Test 8 6 ...
Page 86: ...9 2 Turning the Main Power Off 9 2 ...
Page 87: ......
Page 103: ...xvi ...
Page 125: ...1 5 About the Security Mode 1 22 ...
Page 209: ...4 6 Displaying Job Stack 4 34 ...
Page 299: ...6 5 Mirror Shift Function 6 34 ...
Page 329: ...8 2 ...
Page 331: ...9 2 ...
Page 341: ...10 2 Registering Work Instructions 10 10 ...
Page 349: ...11 3 Spot Gun Condition Data File 11 8 ...
Page 373: ...14 5 Spot Welding Specific Signal Allocation List 14 12 ...
Page 375: ...15 1 Table of Work Instructions 15 2 ...
Page 385: ...11 10 ...
Page 386: ......