Content .. 24 25 26 27 ..

Technology of watch production - part 26

,_.

FIGURE

Model lAlOP Swiss-type auto

matic screw machine

Rocker cams Tool-slide cams

E n=S17-3124 rpm

Headstock-feed cams

Electric motor

�11f20

rpm

N•l7

FIGURE

Kinematic scheme of the lAlOP automatic

TABLE 1

Spi ndle speeds

Change

Spindle

pulleys

Spindle

pulleys

Spindle

pulleys

speed,

rpm

6250

1 76

3 1 80

1 76

1 57

1620

1 12

5550

1 76

2840

1 450

1 25

5000

1 76

1 00

2520

1 300

1 40

4460

1 76

1 1 2

2270

1 1 60

157

4000

1 76

1 25

2020

1 030

1 76

3570

1 76

140

1820

1 00

The jack shaft IV drives the worm reduction gear ( shaft V ), from which

the rotation is transmitted, through the change gears a and b and a two - step

pulley fastened to shaft VI, to the trans verse shaft VII, which in turn is

connected by a wo rm and wheel with the cams haft VIII.

The stepp ed pulleys and the change gears make it pos sible to obtain 4 5

different camshaft speeds . Taking into account the 1 7 main drive -shaft

speeds , we have 7 6 5 possible cams haft spe eds (Table 2 ). Thus , the cam

shaft speed can b e varied within wide limits , a fact which p ermits a rational

utilization of the m achine .

In addition to the pulley A , a second pulley (2 ) of 7 0 mm diameter is

mounted on the electric - motor shaft; it powers the cooling- system pump

through the s haft IX and a chain transmission.

Camshaft

FIGURE 6. Camsh aft drive

F ixed pulleys are mounted on the stud shaft IX which power the slotting

attachment spindle and the attachment for retracting the d rill in multiple

drilling.

T h e b a s e o f t h e m a c h i n e is of cast iron and the motor is mounted

on a bracket attached to the rear of the bas e . The drives to the various

working mechanism s of the machine are inside the bas e and the tension of

the drive belts is adjusted by tension pulleys (idlers ) .

A special disc onnecting device , which stops the machine i f the heads tock

drive belt tears, is m ounted inside the bas e .

The machine b e d i s mounted o n the uppe r part of the bas e which i s trough

shaped . The cutting fluid (coolant ) pipes pass through the trough.

1 0 2

,.....

(/)

3
4

6
7

1 0

I I

1 2

1 3

1 4

1 5

1 6

1 7

I S

1 9

2 1

TABLE

Camshaft speeds (rpm) for the lAl OP lathe

Designation of change

Spindle speed, rpm

gears and pulleys

Pulleys

Gears

1030 1 1160 1 1300 1 1450 1 16'10 1 1820 1 2020 1 2270 1 2520 1 2840 1 3180 1 3570 1 4000 1 4460 l sooo 1 5550 1 6250

Camshaft speed, rpm

I'KLO

1 00

0.22

0.25

0.28

0.3 1

0.35

0.39

0.43

0.49

0.54

0.61

0.6S

0.77

O.S6

0.96

1 .07 . 1 . 1 9

1 .34

ElLO

100

0.32 0.36

0.41

0.46

0.51

0.57

0.63

0.71

0.79 O.S9

1 .00

1 . 1 2

1 .40 1 .57

1 .74

1 .96

FKLO

0.35

0.39

0.43

0.49

0.54 0.61

0.6S

0.76

O.S5

0.95

1 .06

1 . 1 9

1 .34

1 .49

1 .67

l .S6

2.09

FKMN

IGO

0.35

0.39

0.44 0.50

0.55

0.62

0.69

0.77

O.S6

0 97

.22

1 .52

1 .70

I .S9

2. 1 3

DHLO

100

0.45

0.50

0.56

0.63

0.70

0.7S

o.S7

0.9S

1 .09

1 .22

1 .37

1 .54

1 .72

1 .92

2. 1 5

2.39

2.69

E!LO

0.50

0.56

0.63

0.7 1

0.79

O.S9

0.99

I .

I I

1 .23

1 .3S

1 .55

1 .74

1 .95 2. 1 7

2.43

2.71

3.04

ElMN

100

0.5 1

0.5S

0.64

0.72

O.S I

0.90

1 .00

1 . 1 3 1 .26

1 .4 1

1 .5S

.77

1 .99

2.22

2.4S

2.76

3. 1 0

FKMN

0.55

0.61

0.69

0.77

O.S6

0.96

1 .07

1 .21

1 .34

1 .5 1

1 .69

l .S9 2. 1 2

2.37

2.65 2.95

3.31

CGLO

100

0.60

0.6S

0.76

O.S5

0.95

1 .06

I . I S

1 .33

1 .4S

1 .66

l .S6

2.09

2.34

2.61

2.92

3.25

3.65

D HLO

0.69

0.7S O.S7

0.97

1 .09

1.22

1 .36

1 .52

1 .69

1 .90

2. 1 3 2.39

2.6S

2.99

3.35

3.72

4 . 1 9

D HM N

1 00

0.7 1

0.79

O.S9

1 .00

I . I I

1 .25

1 .39

1 .56

1 .73

1 .95

2. 1 S 2.45

2.74

3.06

3.43

3.S I

4.2S

E!LO

0.73

O.S2

0.9 1

1 .02

1 . 1 4

I .2S

1 .42

1 .60

1 .7S

2.00

2.2

2.51

2.S2

3. 1 4

3.52

3.91

4.4

FKMN

0.79

O.S9

1 .00

. 1 2

1 .25

1 .55

1 .74

.94

2. 1 S

2.44

2.74

3.07

3.43

3.S4

4.26

4.79

El�IN

0.80

0.90

1 .00

1 . 1 2

1 .26

1 .40

! .56

1 .76

1 .95

2. 1 9

2.46

2.76

3.09

3.45

3.S6

4.29

4.S3

CGLO

0.94

1 .05

l . J S

.32

1 .4S

! .65

J .S4

2.07

2.30

2.5S

2.S9

3.25

3.64

4.54 5.05

5.6S

CGM N

100

0.96

1 .07

1 .20

1 .35

! .50

! .68

l .S7

2.1 0

2.34 2.63

2.95

3.31

3.70

4 . 1 3

4.63 5. 1 4

5.79

DHLO

1 .00

l . J 2

1 .26

1 .4 1

1 .5S

1 .76

1 .96

2.20

2.45 2.75

3.09

3.46

3.SS

4.33

4.85

5.39

6.06

DHMN

1 . 1 0

1 .24

! .3S

1 .55

1.73

1 .94

2. 1 6

2.42

2.70

3.03

3.39

3.SI

4.26

4.76

5.33

5.92

6.66

E!MN

1 . 1 6

1 .30

1 .45

1 .63

J .S2

2.03

2.26

2 .54

2.S3

3. 1 S

3.56

3.99

4.47

4.99

5.59 6.21

6.99

CGLO

1 .36

! .53

1 .7 1

1 .9 1

2. 1 4 2.39

2.66 2.99

3.33

3.74

4 . 1 9

4.70

5.26 5.SS

6.5S

7.31

S.22

CGMN

1 .

.67

l .S7

2. 1 0

2.34

2.62

2.91

3.27

3.64

5. 1 4 5.76

6.43

7.20

s.oo

9.00

1 0.01

FKLO

1 .58

1 .77

1 .98

2.22

2.4S

2.7S

3.09

3.47

3.S6

4.34

4.S7

5.46

6.1 1

6.S2

7.64

S.49

9.55

DHMN

1 .60

1 .79

2.00

2.24

2.51

2.81

3. 1 2

3.51

3.90

4.38

4.91

5.5

6. 1 7

6.S9

7.71

8.57

9.64

......

>I'

TABLE 2 (cant' d)

Designation of change

gears and pulleys

Spindle speed, rpm

Gears

1030

1160 1300 1 1450 1 1620 1 1820

2270 1 2520 1 2840 1 31

3570 1 4000 1 4460

sooo

l ssso I

6250

Pulleys

a l b

Camshaft speed, rpm

.;;

CGMN

2.16

2.42 2.71

3.03

3.39

3.79

4.22

4.74

5.27

5.92

6.64

7.45

8.34

9.31

10.42 1 1 .59 13.03

FKLO

2.29

2.56

2.87

3.21

3.59

4.02

4.47 5.02 5.59

6.28

7.04 7.89

8.84

9.87

1 1 .05

12.28

13.81

EILO

2.30

2.58

2.89

3.24

3.62

4.05

4.50

5.06

5.63

6.32

7.09

7.95

8.90

9.94

1 1.!3

12.37

13.91

FKMN

2.51

2.81 3.15

3.52

3.94

4.41

4.90

5.51

6.13

6.88

7.72

8.65

9.69

10.82

12.1 1 13.46

1 5.14

DHLO

3. 17

3.55

3.97

4.45

4.97

5.57

6.19

6.96

7.74

8.70

9.75

10.93 12.24

13.67

15,31

17.01

19. 13

EILO

3.33

3.73

4. 18

4.68

5.23

5.85

6.51

7.32

8.14 9.15

1 0.26

1 !.50

12.88

14.38

16.10

1 7.89

20.12

FKLO

100

3.55 3.98

4.46

5.00

5.59

6.25

6.95

7.81

8.69 9.76

10.95

1 2.27 1 3.75

15.39

17.19

19.10

21.48

FKMN

3.62

4.06

4.55

5.1 0

5.70

6,37

7.09

7.97

8.86

9.96

1 1.!6

12.52

1.4.02

15.65

17.52

1 9.47

21.90

EIMN

3.65

4.09

4.58

5.13 5.74

6.42

7.14

8.02

8,92

1 0.03

1 1 .24

12.60

14.12

15.76

17.65

19.61

22.06

CGLO

4.30

4.82 5.39

6.04

6.75

7.55

8.40

9.44

10.50

1 1 .80

1 3.23

14.84

16.62

1 8.55

20.77

23.09

25.96

DHLO

4.58

5.13

5.75

6.44

7.20

8.05 8.96

1 0.06

1 1.20

12.58

14.10

15.81

17.71

19.77

22. 14

24.61

27.67

DHMN

5.04

5.65

6.33

7.09

7.92

8.86

9.86

1 ! .07

12.32

13.84

1 5.52

17.40

19.49

21.76

24.36

27.08

30.45

EILO

100

5.18

5.80

6.50

7.28

8.14

9.10

10.13

1 ! .38

12.66

14.22

1 5.95

1 7.88

20.03

22.36

25.03

27.82

3! .29

EIMN

5.28

5.92

6.63

7.43

8.30

9.28

1 0.33

1 1 .60

1 2.91

14.50

16.26

1 8.23

20.42

22.80

25.53

28.37

31.9 1

FKMN

100

5.64

6.32

7.08

7.93

8.86

9.91

1 1 .03

12.39

13.78

15.48

17.36

19.46

21 .80

24.34

27.25

30.29

34.07

CGLO

6.22 6.97 7.80

8.74

9.77

10.93

12.16

13.66

15.20

17.07

19.14

21.46

24.04

26.84

30.05

33.40

37.56

CGMN

6.81

7.63

8.55

9.58

1 0.70 1 1 .97

13.32

14.96 16.65 18.71

20.97

23.51

26.34

29.40

32.92

36.59

41.15

DHLO

100

7.1 2

7.98

8 94

1 0.02

1 1 .19

12.52

1 3.93

15.65

17.41

19.56

2!.93

24.59

27.55

30.76

34.43

38.27

43.04

DHMN

7.29

8.17

9.15

10.25

1 1 .45

12.82

1 4.26

16.02

17.82

20.02

22.45

25.17

28.19

31.48

35.24

39.! 7

44.05

EIMN

100

8.21

9.20

10.31 1 1 .55

12.90

14.44

16.06 1 8.05

20.08

22.56

25.29

28.35

3!.76

35.46

39.70

44.!2 49.62

CGLO

1 00

9.67

10.83 1 2.13

1 3.60

15.19

16.99

18.91

21.24

23.63

26.55

29.77

33.38

37.39

4!.74

46.73

5!.94

58.41

CGMN

9.85

1 1.04

1 2.37

13.85

15.48

17.32

19.27

21 .65

24.08

27.06 30.33

34.01 38.10

42.53

47.62

52.92

59.53

Position of the change

64 1 64 1 64 1 64 1

64 1 64 1 64 1 64 1 64 1 176 , 176 1 176 1 176 1 176 1 176 1 176

pulleys

8 176 1 57 140 125 1 12 100 90

157 140 1 25 1 12 1 00

Content .. 24 25 26 27 ..