Brother TC-32B - Automatic Arc Deceleration

TC-32B Chapter 9 High Accuracy Mode A
2004/01/22 9 - 9 eT32BNCPR.9.doc
9
9.4.2 Automatic arc deceleration function
When performing circular interpolation, a radial error in the actual tool path occurs relative to the
specified circular arc, and the arc radius decreases. In addition to this, the error becomes larger
as the feed rate increases.
This function automatically decelerates the arc cutting feed rate according to the arc deceleration
override setting so that the radial arc shape accuracy specified by the NC program is maintained.
The setting range of the arc deceleration override is 0%, or 10% to 1000% (100% is the default).
The lower the setting is, the more effective the deceleration function, minimizing error and
improving shape accuracy.
When 0% is entered, the automatic arc deceleration function is turned off.
The graph below shows the accuracy relative to the arc deceleration override setting.
How to read graph:
Circular interpolation accuracy when 100% is set for arc deceleration override is "1".
[1] Arc deceleration override (100% ~ 1000%)
[2] Arc deceleration override (10% ~ 100%)
Arc deceleration override and accuracy
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
100 200 300 400 500 600 700 800 900 1000
Arc deceleration override and accuracy
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 102030405060708090100
Arc deceleration override (%)
Arc deceleration override (%)
Good
A
ccurac
y
Poor
Good
A
ccurac
y
Poor