(cnc) - دانشکده مهندسی...

26/11/1434

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1

(CNC)

2

2

8

10

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3

Evolution of CNC Machines

4


Parsons

MIT

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5


Numerical Control(NC)

TapePunch

Tape ReaderMachine Control

Unit

MCU

6


NC.1

.2

.3

.4

.5

Direct Numerical Control (DNC)DNC

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7


DNC

8


DNCNC

.1

.2

.3

.4

.5

DNC

.1

.2

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9


ComputerNumerical Control (CNC)

CNC

.

10


CNC

.1

.2

.3

.4

.5

FMSCAD/CAM

.6

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11


DNCCNC

Direct Computer Numerical Control (DCNC)Distributed Numerical Control (DNC)

.1

.2

.3

.4FMS,

.CAD/CAM

12

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13

.1Mass Production

.2Batch Production

.3Job Shop Production

14

.1Mass Production

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15

.2Job Shop Production

16

.1Batch Production

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17

Quantity

Variety

18

Quantity

Variety

Special

SystemCIMS

FMS

CNC

•

.1PLC

.2

.3

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19

20

Stiffness

Backlash

Screw & Nut

Rack & Pinion

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11

21

Screw & Nut

Recirculating Ball screws

Roller screw

22


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12

23


24


.

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13

25


26


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14

27


Backlash

Pre-load Recirculating Ball screws

28


.1

.2

.

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29

/Roller screw

Recirculating Roller Screw

Planetary Roller Screw

30

Positional Transducer

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16

31

Output Transducer

.1

.2Spindle

.3

.4

.5

.6

32


feed back

Resolution-- AccuracyPrecision

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33


.1

.2

.3

.4

.1LinearRotary

34


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35


36

/ وسائل اندازه گير موقعيت Positional Transducer

Encoders

Machine Datum

Binary Code

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37


38


Direction Discriminatornn

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39


.3

40


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41


Brush

Decode

42


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43


Ambiguity Error

Gray / Progressive Scale

44


20

21

22

23

24

0 1 2 3 4 5 6 7 8 9 10

Binary Code

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45


0 1 2 3 4 5 6 7 8 9 10

Gray / Progressive Scale

46

Machine Control System

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47

Machine Control Unit

.1

.2

48


Interpolation

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49


.1Point-to-Point

.2

.3

50


.1Continuous Path (Contouring)–

.2

.iLinear Interpolation

.iiCircular Interpolation

.iiiParabolic Interpolation

.ivHelical Interpolation

.vCubic Interpolation

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51


.iLinear Interpolation

.ii

52


.iiCircular Interpolation–

.iii

.

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53


.1Open Loop–Stepper

54

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55

56


.2Closed Loop–

.3

Feed Back

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29

57

58

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59

Electronic Industries Association (EIA)International Standard Organization (ISO)

60

Alphanumeric

Parity Check

ISOEIAISOEIA

BinaryCoded Decimal (BCD)

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61

ضبط، نگهداري و انتقال اطالعات

.I

.II

.1

.2

.3

.4

.1

.2

62

.2–

Decode

.3

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63

.4–

.5

EIA, ISO

64

Manual Programming

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65

66

.1Manual Part Programming

.2

.3Parametric Programming

.4Geometric Programming

.1Manual Part Programming–

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67

تهيه برنامه

.2–

.3

.4

68

.3Parametric Programming–

.4Geometric Programming–

MasterCam, EdgeCam, Catia, PowerMill, …

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69

70

x,y,z

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71

72

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73

.1Fixed Sequential

.2Block Address

.3Tab Sequential

.4Word Address

74

.1Fixed Sequential–

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75

.2Block Address–

Space Bar

76

.3Tab Sequential

Tab

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77

.4Word Address–

Address

78

G17, G18, G19

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79

Absolute coordinate

G90

80

Incremental coordinate

G91.

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81

.1

.2

.3

.4

.5

.6

.7

.8

.9

.10

82

N4 G2 X6 Y6 Z6 M2 I6 J6 K6 S4 F3 R6 D2 T2

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83

N

G

X, Y, Z

M

I, J, K

S

F

R

D

T.

84

Manual Programming

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85

50

30

2016

86

.1

.2

.3

.4

.5

.6

.7

.8

.9

.10

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87

Z

X

P X Z

P0

P1

P2

P3

P4

P5

P6

P7

P8

22mm

88

N10

P0

P1

P X Z

P0 20 50

P1 11 -1

P2

P3

P4

P5

P6

P7

P8

N10 G00 X11 Z-1

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89

N11

P2

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3

P4

P5

P6

P7

P8

N11 GO1 X0 Z-1

90

N12

P3

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4

P5

P6

P7

P8

N12 G00 X9 Z1

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91

N13P4

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5

P6

P7

P8

N13 G01 X9 Z-31

92

N14

P5

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5 10 1

P6

P7

P8

N14 G00 X10 Z1

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93

N15

P6

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5 10 1

P6 8 1

P7

P8

N15 G00 X8 Z1

94

N16P7

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5 10 1

P6 8 1

P7 8 -31

P8

N16 G01 X8 Z-31

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95

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5 10 1

P6 8 1

P7 8 -31

P8 11 -31

N17 G01 X11 Z-31

N17

P8

96

P X Z

P0 20 50

P1 11 -1

P2 0 -1

P3 9 1

P4 9 -31

P5 10 1

P6 8 1

P7 8 -31

P8 11 -31

N18 G00 X20 Z50

N18

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97

N0 G90N1 G00 X11 Z-1N2 GO1 X0 Z-1 F120N3 G00 X9 Z1N4 G01 X9 Z-31 F120N5 G00 X10 Z1N6 G00 X8 Z1N7 G01 X8 Z-31 F120N8 G01 X11 Z-31 F120N9 G00 X20 Z50N10 M30

98

Manual Programming

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50

99

50 10

100

X

Y

P X Y Z

P0

P1

P2

P3

P4

P5

P6

P7

P8

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101

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2

P3

P4

P5

P6

P7

P8

P0

P1

N10

N10 G00 X10 Y10 Z0

102

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3

P4

P5

P6

P7

P8

P2

N20

N20 G01 X0 Y0 Z-20

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103

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4

P5

P6

P7

P8

P3N30

N30 G01 X50 Y0 Z0

104

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5

P6

P7

P8

N40

P4

N40 G01 X0 Y50 Z0

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105

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6

P7

P8

N50P5

N50 G01 X-50 Y0 Z0

106

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6

P7

P8

N60

P2

N60 G01 X0 Y-50 Z0

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107

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6

P7

P8

N70

P4

N70 G01 X50 Y50 Z0

108

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7

P8

N80

P6

N80 G00 X0 Y0 Z12

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109

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7 0 50 2

P8

N90

P7

N90 G00 X-50 Y0 Z0

110

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7 0 50 2

P8

N100P5

N100 G01 X0 Y0 Z-12

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111

N110

P3

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7 0 50 2

P8N110 G01 X50 Y-50 Z0

112

N120

P8

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7 0 50 2

P8 50 0 2N120 G00 X0 Y0 Z12

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113

N130

P0

P X Y Z

P0 10- 10- 10

P1 0 0 10

P2 0 0 10-

P3 50 0 10-

P4 50 50 -10

P5 0 50 10-

P6 50 50 2

P7 0 50 2

P8 50 0 2N130 G00 X-60 Y-10 Z8

114

N00 G91

N10 G00 X10 Y10 Z0

N20 G01 X0 Y0 Z-10 F100

N30 G01 X50 Y0 Z0 F150

N40 G01 X0 Y50 Z0 F150

N50 G01 X-50 Y0 Z0 F150

N60 G01 X0 Y-50 Z0 F150

N70 G01 X50 Y50 Z0 F150

N80 G00 X0 Y0 Z12

N90 G00 X-50 Y0 Z0

N100 G01 X0 Y0 Z-12 F100

N110 G01 X50 Y-50 Z0 F150

N120 G00 X0 Y0 Z12

N130 G00 X-60 Y-10 Z8

N140 M30

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115

CNC simulator

116

Tool Radius Compensation

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59

117

118

P4

P1 P2

P3

Q4

شعاع قلم R

Q3

Q2Q1

X

Y

Q X Y

Q1 XP1-R YP1-R

Q2 XP2+R YP2-R

Q3 XP3+R YP3+R

Q4 XP4-R YP4+R

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119

–

αP1 P2

P3

Q2

Q2

XQ2 = XP2 + Rtgα/2

YQ2 = YP2 - R

X

Y

120

–

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61

121

–

αP1 P2

P3

X

Y

Q2

Q2

XQ2 = XP2 + R/tgα/2

YQ2 = YP2 - R

M2

N2

122

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62

123

α

r

LΔ

Δ= r - L

P1P2

P3

)2

tan(

rL

124

Z

ZA =

ZB = Z1+ Δz

ZC = Z2 + Δz

ZD = Z3 - Δz

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63

125

Tool Radius Compensation

126

G41

G42

P1 P2

ISO

G42G41

G41

G42

G41

G42

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64

127

) ISOISO

توضيحدستور رديف

1G00

2G01

3G02

4G03

5G10

6G11

7G12

8G13

128

توضيحدستور رديف

1G24/G25

2G26/G27

3G28

4G30/G31

5G40

6G41/G42

7G54

8G79

9G76,G77,G78,G83

G98

G90/G91

G99

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129

130

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66

131

Catia

.1

.2

.3

132

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133

Subroutine, Cycle, Macro

134

Subroutine / Sub programming

Macro

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68

135

136

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137

Cycle

138

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139

140

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141

142

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143

144

(cnc) - دانشکده مهندسی...

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