Theory and Design of CNC Systems Part 5 potx
Theory and Design of CNC Systems Part 5 potx
... arc
and the line join.
-10
- 25 -20 - 15 -10 -5 0 5 10 15
-5
0
5
10
15
20
25
X-axis (mm)
Y-axis (mm)
Fig. 4.38 Look-ahead path
4.4 Look Ahead 151
The smallest among V
1
, V
2
, and the commanded ... profile of the acceleration interval in Block N1 can be obtained
by Eq. 4.69 and Eq. 4 .55 and the speed profile of acceleration interval in Block
N2 can be obtained by Eq....
Theory and Design of CNC Systems Part 14 potx
... 54
G74, 54
G 75, 54
G76, 54
G80, 54
G81, 54
G82, 54
G83, 54
G84, 54
G84.2, 54
G84.3, 54
G 85, 54
G86, 54
G87, 54
G88, 54
G89, 54
G90, 41, 43, 45, 54
G91, 41, 43, 45
G92, 54
G94, 54
G96, 53
G97, 53
G98, ... 50
G42, 50
G43, 51
G44, 51
G49, 51
G50.1, 42
G51, 41
G51.1, 42
G54, 41
G 55, 41
G56, 41
G57, 41
G58, 41
G59, 41
G61, 48, 126
G62, 49
G63...
Theory and Design of CNC Systems Part 4 potx
... height error is calculated using Eq. 3 .54 .
EH
max
= R
α
2
/8 (3 .54 )
Equation 3 .52 and Eq. 3 .54 lead to Eq. 3 .55 .
ER
max
=
πα
2
EH
max
(3 .55 )
From Eq. 3 .55 we know that if angle
α
is smaller than ... of the B-spline basis function, P
i
denotes control point i ,and
w
i
stands for the ‘weight’ of P
i
.
3 .5. 2 NURBS Geometric Characteristics
The characteristic of NURBS curves...
Theory and Design of CNC Systems Part 9 potx
... INDIRV/0.3624 454 ,0.9320 05, 0.0
TLLFT, GOFWD/LI83, PAST, LI84
GORGT/LI84, TANTO,CI58
GOFWD/CI58,TANTO,LI 85
THICK/0.0,0.13,0.0
GOFWD/LI 85, ON,(LINE/(POINT/6. 25, -1. 255 ,1.0),PERPTO,(LINE/$
6. 250 7,-1. 255 ,1.0,6. 25, -1. 255 ,1.0))
... =LINE/0. 25, -1.0,2.0,2.0,3 .5, 2.0
LI84 =LINE/2.0,3 .5, 2.0,6. 752 5,1.1319,2.0
CI58 =CIRCLE/6. 250 7,0.1 25, 2.0,1.1 25
LI 85 =LINE/6. 250 7...
Theory and Design of CNC Systems Part 1 pps
... Open CNC 353
10.1 Introduction . . 353
10.2 DesignofSoftwareArchitecture 356
10.2.1 CNCSystemModeling 356
10.3 DesignofSoft-NCSystem 359
10.3.1 Design of Task Module . 359
10.3.2 DesignoftheSystemKernel ... FeedforwardControl 171
5. 5 AnalysisoftheFollowingError 179
5. 5.1 TheFollowingErroroftheFeedbackController 179
5. 5.2 TheFollowingErroroftheFeedforwardController 182
5. 5....
Theory and Design of CNC Systems Part 2 doc
... N240 X60 Y60;
N 250 M99;
N50 G51.1 Y50; → sym. X =50 , Y =50
N60 M98 P100001;
N70 G50.1 X0; → reset X
N80 M98 P100001;
N90 G50.1 Y0; → reset Y
N100 M30;
Y
100
N40 N20
60
50
40
100
6 050 400
N60 N80
X
Fig. ... representative indicator
that shows the design concept and the functional aspect of a CNC and is a big part of
33
26 1 Introduction to NC Systems
System
memory
Part...
Theory and Design of CNC Systems Part 3 ppsx
... 9
6 6 1 –17 5 9 5 9
7 –11 11 – 15 5 8 5 8
8 0 13 – 15 4 8 6 8
9 13 15 – 15 3 8 7 8
10 –2 15 –13 3 7 7 7
11 13 17 –13 2 7 8 7
12 0 17 –11 2 6 8 6
13 17 19 –11 1 6 9 6
14 6 19 –9 1 5 9 5
15 -3 19 –7 ... K0. X-1.6 953
Y 75 Z 2 358 F10
N120 K0. X-1. 654 4 Z 2313
N130 K0. X-1 .57 52 Z 22 25
N140 K0. X-1.4 053 Z 2067
N 150 K.0313 X-1.3031 Z 1982
N160 K.0781 X-1.12 15 Z 1847
N...
Theory and Design of CNC Systems Part 6 pptx
... loop.
Commanded
position
Actual
position
050
100
150
200
250 300
5
10
15
20
25
30
35
40
45
Time (ms)
Position (mm)
050
100
150
200
250 300
0 .5
0.1
1 .5
2.0
2 .5
3.0
3 .5
4.0
4 .5
Time (ms)
Following error (mm)
Fig. 5. 17 Comparison of following ... index
// (54 ,55 ,56 ,57 ,58 ,59 )
short num
of mid; // number of mid point when
// offset is used
short offset
e...
Theory and Design of CNC Systems Part 8 ppsx
... Lamp
F 05. 1
F 05. 2
F 05. 3
F 05. 4
F 05. 5
F 05. 6
F 05. 7
F07.0
F07.1
F07.2
F07.3
F07.4
F07.5v
G03.0
G03.1
G03.2
G03.3
G03.4
G03 .5
G03.6
G03.7
G04.0
G04.1
CNC Mode Auto
CNC Mode Manual
CNC Mode MDI
Reset
CNC ... methods and the
method of designing a soft PLC system will be described together with design of
Soft-NC in the later in this textbook. In Soft-NC, a PC is used as...
Theory and Design of CNC Systems Part 10 pot
... point of view. Furthermore, the design of
the system kernel, which plays the role of booting up the CNC system, terminating
the CNC system, communicating data and events to the tasks, and switching ... minimized and in which
the number of tool changes is minimized, verifying tool paths and the finished part,
and estimating machining time based on the minimum user input...
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