Machine zero or HOME position of the Baxter Entrepreneur CNC Late.

XH = 522.727 mm ZH = 573.629 mm

Tool dimensions of the Reference Tool ( RT ) from tool catalog.

Tool # 5 DCLNL-165C: Xset = 127.0 mm

Zset = 50.8 mm

Calculation of Workpiece Datum ( W ) for the Reference Tool ( RT ).

X = XH – XsetRT = 522.727 – 127.0 = 395.727 mm

Z = ZH – ZW – ZsetRT = 573.629 – 56.0 - 50.8 = 466.829 mm

Calculation of the Reference Point ( RP) for Tool change position.

RP XRT = 300.0 mm (this dimension is a save location to rotate the turret).

RP ZRT = LW + ( Lmax – ZsetRT ) + u = 55 + (58.6 – 50.8) + 25.0 = 87.8 mm

Calculation of the Reference Point ( RP ) for the Tools used in the Program.

RP X = XRT + ( XsetRT – Xset )

RP Z = ZRT + ( ZsetRT – Zset )

RP for T01 X = 300.0 + ( 127.0 – 127.0 ) = 300.00 mm

Z = 87.8 + ( 50.8 – 50.8 ) = 87.80 mm

RP for T02 X = 300.0 + ( 127.0 – 130.0 ) = 297.00 mm

Z = 87.8 + ( 50.8 – 50.8 ) = 87.80 mm

RP for T03 X = 300.0 + ( 127.0 – 178.7 ) = 248.30 mm

Z = 87.8 + ( 50.8 – 51.1 ) = 87.50 mm

RP for T04 X = 300.0 + ( 127.0 – 177.0 ) = 250.00 mm

Z = 87.8 + ( 50.8 – 48.6 ) = 90.00 mm

RP for T08 X = 300.0 + ( 127.0 – 127.3 ) = 299.70 mm

Z = 87.8 + ( 50.8 – 58.6 ) = 80.00 mm

D.O.C. (depth of cut) calculations WP 4

Given: N.O.C. = 2 (number of cuts)

b = 0.5mm (allowance of material for finishing)

Find: D.O.C. (depth of cut)

50 40 0.52 2. . . 2.25. . . 2

D d bD O C mm

N O C

Tool nose radius compensation calculation on a 30 degr, slope for a roughing pass

1.2

0.5

30

tan * 0.288675

tan * 0.69282

tan 1.4433762

tan 0.1342

tan 0.32152

Rs mm

b mm

c b mm

e Rs mm

D df mm

a b mm

g Rs mm

1

1

2

2

2 2 33.512

55.5

2 41.0

53.338

X d a g Rs mm

Z L b mm

X D b mm

Z L f c e Rs mm

Sequence of machining for T01 (ext. roughing, Rs=1.2mm)

X45.5 Z57.5X41.0 Z57.5 , Z53.388

X33.512 Z57.5 , Z55.5

X45.5 Z15.5X41.0 Z15.5

X47.0 Z15.5X47.0 Z-2.4X50.0 Z-2.4

X-3.0 Z55.5

T01 externalroughing

b

1 X545. Z55.5

2

1415

16

2

X1.0 Z57.53

9

105,12

678

4,1311

Point Code X Z

1 G00 54.0 55.5

2 G01 -3.0

3 G00 1.0 57.5

4 45.5

5 G01 15.5

6 47.0

7 -2.4

8 50.0

9 G00 57.5

10 41.0

11 G01 15.5

12 45.5

13 G00 57.5

14 33.512

15 G01 55.5

16 41.0 53.388

Sequence of machining for T02 (ext. roughing, Rs=0.8mm)

T02 externalroughing undercutRs=0.8mm

b2.0

12

34

5

b2

2.5

h

g f2

1

1

2

2

0.8

0.5

45

2 sin * 0.707

tan 0.33137082

tan 0.5384776312

45.0

15 9 15 9 0.707 0.8 22.162

36.0

15 4 15 4 0.5385 0.8 17.662

Rs mm

b mm

f b mm

g Rs mm

h Rs b mm

X mm

Z f g Rs mm

X mm

Z h Rs mm

Point Code X Z

1 G00 45.0 22.162

2 G01 36.0 17.662

3 15.5

4 41.0

5 G00 50.0 18.0

Sequence of machining for T03 (ext. finishing, Rs=0.4mm)

T03 Ext finishing toolRs=0.4

1

2

3

4

5678

91011

12

Z4=57mm

30°

mn

2mm

X6=40mm

d=35mmp

Z6

X4

q

s

Rs

Rs

L=55mm

6

4 6

6

2

0.4

30

40 352.5

2 2tan * 1.443

23.464

tan

tan * 0.1072

tan * 0.2309

2( ) 40 (2.5 3.464 0.107 0.4) 27.486

55 1.443 0.2309 0.4 53.388

36.0

Rs mm

X dm mm

n m mm

p mm

q Rs mm

s Rs mm

X X m p q Rs mm

Z L n s Rs mm

X mm

2 15 4 15 4 0.5385 0.8 17.662Z h Rs mm

11

10

9

8

7

k

RsZX= 40mm

L=15mm

0.3x45°

X= 35mm

X= 46mm

4mm i

7

7

8 9

8

9 10

10

0.4

45

tan 0.1662

23.464

tan40 35

2.52

40.0

15 4 15 4 2.5 0.166 0.4 20.934

35.0

15 4 15 4 0.166 0.4 18.434

15.0

46.0 2(0.3 ) 46.0 2(0

Rs mm

k Rs mm

i mm

q mm

X mm

Z i k Rs mm

X X mm

Z k Rs mm

Z Z mm

X k Rs

11

.3 0.166 0.4) 44.932

15 0.3 15 0.3 0.166 0.4 14.466

mm

Z k Rs mm

Point Code X Z

1 G00 42.5 55.000

2 G01 -2.0 17.662

3 G00 2.0 57.0

4 27.486

5 G01 40.0 53.388

6 20.934

7 35.0 18.434

8 15.0

9 44.932

10 46.0 14.466

11 -1.0

12 47.0

Sequence of machining for T04 (ext. THREADING)

3*1060 477 500

min *threading

m VcVc n rpm use rpm

D

From table above: a=2.05mm

B=1.0mm

1 a L* 2 b L*

L = Thread lead (pitch)

Figure 39 Straight threads cutting example

1 * 2.05*2 4.1

2 * 1.0*2 2.0

5 2

1 40% 0.8 38.4

2 30% 0.6 37.2

3 20% 0.4 36.4

4 10% 0.2 36.0

5 0% 36.0

st

nd

rd

th

th

a l mm

b l mm

NOC passes Pitch L mm

cut DOC mm X

cut DOC mm X

cut DOC mm X

cut DOC mm X

cut X

Point Code Code X Z F S M

1 G97 S500 M03

2 G00 44.0 59.1 M08

3 G00 G92 38.4 17.5 F2.000

4 37.2

5 36.4

6 36.0

7 36.0

8 G00 59.1

9 200.0 M09

Sequence of machining for T08 (cut off tool)

Point Code X Z

1 G00 54.0 0.000

2 G01 40.0

3 G00 50.0

4 4.117

5 G01 41.8 0.0

6 -1.0