
Dresser/Wheel Radius Compensation
Chapter 15
15-29
If the next programmed move is circular (an arc), the dresser/wheel is
positioned at right angles to a tangent line drawn from the start-point of
that circular move.
Figure 15.24
Dresser/Wheel Path for Entry Move Straight Line-to-Arc
0 ≤θ≤90
90
≤θ≤180
Programmed path
G41
G42
Start-point
Start-point
Programmed path
G42 G41
180
≤θ≤270
270
≤θ≤360
Start-point
Start-point
Programmed
Path
G42 G41
θ
θ
θ
θ
Programmed path
G41
G42
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
G39 (Linear Generated Blocks)
G39 (Linear Generated Blocks)
G39.1 (Circular Generated Block)
0 ≤θ≤90
Programmed path
G41
G42
Start-point
θ
r
r
r
G39.1 (Circular Generated Block)
270 ≤θ≤360
Start-point
θ
Programmed path
G41
G42
r
r
r
12115-I
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