Content .. 57 58 59 60 ..

Technology of watch production - part 59

Calculation table

A :

cutter cam

No.

N o .

•R

No.

+ 1 8.63

- 4.74

!54

+ 2 1 .68

221

+45.3 1

273

- 1 7.27

+ 1 8.63

- 3.86

1 55

+ 22.96

222

44.35

274

- 1 5.34

+ 1 9. 1 1

- 7.87

! 56

-}-24.56

223

+ 43.23

275

- 1 4.94

+ 1 9.5 1

- 7.95

! 57

+26. 1 7

224

+ 42.03

277

- 1 4.46

20.07

- 7.63

!58

+27.69

225

+40.67

28 1

- 1 7.27

1 0

+ 1 9.9 1

- 7.15

! 59

+ 29.37

226

+ 39.47

285

- 1 1 .25

I I

+ 1 9.1 1

- 6.83

1 60

+ 3 1 . 1 4

227

+37.95

289

- 8.27

1 2

+ 1 8.63

- 2.57

1 6 1

+32.82 228

+36.51

29 1

- 5.78

1 3

+ 1 8.63

- 0.64

1 62

+ 34.42

229

+ 34.91

292

- 4 . 1 0

1 6

+ 1 3.66

0.00

1 63

-t-36. 1 1

230

+ 33.46

293

- 2.57

1 7

+ 1 4.22

+ 0.64

1 64

+ 37.39

231

31 .70

294

- 1 .2 1

1 5. 1 0

3.62

1 65

+ 38.67

232

+ 30.10

295

+ 0.08

1 9

+ 1 6.47

+ 6.83

1 66

+39.71

233

+ 28.33

296

1 . 1 2

+ 1 7.9 1

+ 7.79

1 67

+ 40.59

234

+26.89

297

+ 1 .93

2 1

+ 1 9.51

8.92

1 72

+ 4 1 .39

235

25.20

298

+ 2.49

+ 2 1 . 1 2

+ 1 0.04

1 73

+40.91

236

+23.60

299

+ 2.73

+22.64

+ 1 2.53

1 74

-t-40.5 1

237

+ 22.24

300

+ 2.73

+ 23.76

+ 23 . 1 2

1 75

+ 39.71

238

+20.72

301

+ 2.49

+ 24.64

+ 29 37

1 76

+ 38.75

239

+ 1 9.43

302

+ 1 .77

+ 25.04

+ 29.37

1 77

+ 37.63

240

+ 1 8.07

309

- 8.68

+25.04

+ 25.77

1 78

+36.27

241

+ 1 6 87

3 1 1

- 8.92

+ 24.64

+ 25.85

1 79

+34.91

242

+ 1 5.83

3 1 3

- 1 0.68

+23.84

+ 26.65

1 80

+33.38

243

+ 1 4.70

3 1 4

- 1 0.76

+ 22.64

1 00

+ 27.77

1 8 1

+ 3 1 .78

244

+ 1 3.82

3 1 5

- 1 0.52

+21 . 1 2

1 01

+ 29.2 1

1 82

-J- 30 . 1 3

245

+ 1 3. 1 7

3 1 6

- 1 0.04

+ 1 8.31

1 02

+ 30.74

1 83

+28.57

246

+ 1 2.45

3 1 7

- 9.24

+ 1 7.9 1

1 03

+ 32.02

1 84

+28.57

247

+ 1 1 .97

3 1 8

- 8.27

+ 17.43

1 06

+ 32.50

! 88

+ 24.00

248

+ 1 1 .49

3 1 9

- 7.07

1 6.7 1

+ 3 1 .70

1 89

+ 25.61

249

+ 1 1 .25

320

- 5.62

+ 1 5.67

108

+ 30.58

1 90

+27.21

251

+ 1 0.68

321

- 4 . 1 8

+ 1 4.38

1 09

+ 29.29

1 9 1

+28.89

254

+ 5.70

322

2.5

1 2.85

1 1 4

+ 35.87

1 92

+30.58

260

+ 9.00

323

- 0.096

4 1

+ 1 1 .33

1 27

+57.70

1 93

32.26

26 1

5.30 324

+ 0.64

9.80

1 29

+ 54.66

194

+ 33.86

263

- 9.00

325

2.17

+ 8.1 9

140

+35.95

1 95

+ 35.47

264

- 1 0 .60

333 - 3.70

+ 6.91

1 4 1

+26.33

1 96

+37.07

265

- 12 . 1 3

S35

- 3.70

-t 5.78

1 46

+ 1 7.35

1 97

+38.67

266

- 1 3.58

336

- 1 . 1 2

+ 4.98

1 47

+ 1 7.03

1 98

-t- 40. 1 1

267

- 14.78

337

0.00

+ 3.37

1 48

+ 1 7. 1 1

200

+42.85

268

- 1 5.9 1

338

- 0.64

- 0.72

1 49

+ 1 7.43

204

+48.51

269

- 1 6.63

339

- 3.05

- 2.25

!50

+ 1 7.91

2 1 0

+48.03

270

- 1 7.27

341

- 3.05

- 3.78

! 5 1

+ 1 8.55

2 1 2

+5 1 , 1 4

271

- 1 7.43

350

+ 5 1 .30

- 4.82

!52

+ 1 9.43

2 1 9

+ 46.91

272

- 1 7.51

35 1

+ 5 1 .30

- 5.22

!53

+20.48

220

+46.91

2 3 3

�

lts• -

i l_

Dircc r i o n of c a l l i rotation

Cam rotation

o·

�

a;·

us·

;t,r;•

155

.5 '

178'

'-'

:qa·

.'96'

J6o·

FIGURE � 7 .

Profi les of c ams

(22) and (2:J)

2 3 4

/"75°

Calculation table

n :

table cam

No.

No ,

No .

No.

I>R

No .

+ 25 . 6 1

+ 29. 2 1

! 5 4

3.05

221

+ 5.86

273

+ 1 5.50

+25.61

27.37

! 55

+ 2.09

222

+ 4.02

274

1 3.98

+26.4 1

+ 1

1 56

1 .37

223

+ 2.25

275

+ 1 2.61

+ 26.65

+ 1 7. 27

! 57

+ 0.80

224

+ 0.64

277

+1 0.52

+ 26 . 1 7

+ 1 6.87

! 58

+ 0.56

225

+ 0.64

2 8 1

+ 5. 1 4

1 0

+ 25.37

+ 1 6.87

! 59

0.64

226

2.01

285

+ 2.0 1

I I

+ 25.04

+ 1 7. 1 9

1 60

+ 0.88

227

+ 3.05

289

+ 7.39

1 2

+ 25.61

27.05

1 6 1

+ 1 . 37

228

+ 4.1 0

291

7.63

1 3

+ 25 . 6 1

+ 27.69

1 62

+ 2.25

229

292

7.95

1 6

+24.00

+28.09

1 63

+ 3.37

230

5.46

293

+ 8.52

1 7

+22.48

+ 28.49

1 64

+ 4.66

231

- 6

.03

294

9.08

1 8

+ 2 1 .20

+ 3 1 . 62

1 65

6.19

232

- 6,27

295

+ 1 0.60

1 9

+20.23

+28.73

1 66

+ 7.87

233

- 6.27

296

+ 1 1 .89

+ 1 9.67

+28. 1 7

1 67

9.72

234

- 6, 1 9

297

+ 1 3 .34

2 1

·t

1 9.57

8 1

+27.61

1 72

+ 1 8. 7 1

235

- 5.94

298

+ 1 4.34

+ 20.07

7.29

1 73

+20. 39

236

- 5,54

299

+ 1 6.63

+ 20.88

+33. 1 4

1 74

+ 2

.00

237

- 5.06

300

1 8

.3 1

+ 22.24

-t

2 1 .68

1 75

+23.44

238

- 4.42

301

+ 1 9.99

23.84

1 4.30

1 76

24.72

239

- 3.45

302

2 1 .60

+ 25.61

+ 1 4.30

1 77

+ 25 .

240

- 2.49

309

+ 1 5 .34

+27.29

+ 1 4.62

1 78

+26.81

24 1

- 1 .45

3 1 1

+ 1 7. 9 1

2 8

+ 28.97

+ 1 3, 0 1

1 79

+ 27.45

242

0.24

3 1 3

30. 1 0

+ 3

0.42

+ 1 1 .65

1 8

27.85

243

+ 1 .04

3 1 4

+ 3 1 .62

+ 3 1 .38

1 00

+ 1 0.60

1 8 1

28.

244

+ 2,4 1

3 1 5

+ 33 . 1 4

3 1

+32.02

1 0

+ 1 0.28

1 82

+28.09

245

3 1 6

+34.58

+ 32.74

1 02

+ 1 0.68

1 83

+ 27.85

246

+ 5.38

3 1 1

38.27

+ 35. 7 1

1 03

+ 1 1.73

1 84

+27.85

247

+ 6.91

3 1 8

-t

37.07

+ 37.31

1 06

+ 1 6.87

1 88

+ 33.1 4

248

+ 8.60

3 1 9

+ 37.95

+ 38.67

1 07

+ 1 7. 83

1 89

+ 34.34

249

+ 1 0.28

320

+ 38.67

.79

1 08

+ 1 8

.39

1 90

-t 34.34

251

13.82

32 1

+39 . 1 5

+ 40.61

1 09

+ 1 8.39

1 9 1

+ 34.74

254

+ 1 4,22

322

+ 39.

+ 4 1 .07

1 1 4

+ 1 3.

1 92

+34.66

260

+23.60

323

+ 39

4 1

+ 4 1 .23

1 27

+ 1 4.46

1 93

+35. 1 5

261

+28.33

324

+ 39.

+ 40.83

1 29

+ 1 5.67

1 94

5.07

263

+27.21

325

+ 38.75

+ 40.27

1 40

+ 1 4.86

195

+34.91

264

+ 26.89

333

- 2 1 .44

+ 39.31

1 4 1

+ 1 5 .34

196

+34.42

265

+ 26.25

335

-21 .44

+ 38.03

1 46

15.9

1 97

33.94

266

+ 2

5.45

336

- 22.24

+ 36.59

1 47

+ 1 4 . 1 4

! 98

+ 33. 1 4

267

+ 24.40

337

- 2 1 . 68

4 8

+ 32.66

1 48

+ 1 2.29

200

1.54

268

+ 2

3. 1 2

338

- 20.48

+33.94

1 49

204

+37.87

269

+ 2 1 .76

339

- 1 9.67

5 1

+34. 1 0

! 50

1:,

8.76

2 1

+ 25.29

270

+ 20.31

341

- 1 9.67

+ 33.54

! 5 1

-V

7.07

2 1 2

+23.52

271

+ 1 8.7!

350

- 3 ! .30

+ 32.34

! 52

+ 5.46

2 1 9

+ 9.48

272

1 7. 1

351

- 3 1 .30

+ 30.74

! 53

+ 4 .1 8

220

-t

7.63

2 3 5

In addition to the above - described method of calculating and plotting cams ,

direct layout and finishing of cams for the S- 5 0 machine can be carried out

on the special F - 1 2 1 machine (Figure 2 8 ) .

The machine reproduces the operation o f levers (24 ) and ( 2 5 ) o f the S - 5 0

machine with the s ole difference that the arms o f the F - 1 2 1 machine leve rs

which carry the tool and the master are ten times longer than the sho rt

arms of levers (24 ) and (2 5 ) which carry the cutter and the work table .

FIGURE

2 8 .

Pian view of the

F-121

machine for marking, milling and finishing cams

for the

machine

The F - 1 2 1 machine automatically splits the motion of the pin, moving

along the master path, into the motions of two tools which form the cam

profiles . Its design and operation are as follows . Two arms are articulated

on the brackets (3 ): a cutter arm ( 1 ) and a table arm (2 ), terminated in a
pin and a round table (5 ), respectively. A metallic mas ter ( 4 ) with the cutter

path to a s cale of 1 0 : 1 engraved on its surface is fastened to the table .

The slides (6 ) with milling- grinding spindles , having rotary and reciprocat

ing motions , are suspended from the two arms at a distance of 300 mm from

the hinge axes .

The index plates ( 7 ), capable of rotating about their axes , are located

on the machine fram e in front of the articulated supports .

The rods ( 8 ) have an articulated end placed in an annular T-slot in the

upper face of the plates . The other rod end fits in an arc-shaped slot in

levers (9 ), fastened to the arm s . The two plates are connected by m eans

of rod ( 1 0 ), whos e articulated ends are fixed in the T- slots of the plate s ,

thus ensuring equal angular displacements for the m . O n the plate circum

ference 36 0 equally spaced teeth are cut and mesh with a small gear ( 1 1 ).

The gear is fitted on the same axis with the handwheel (12 ). The cam

blank is mounted on the upper flange of the index plate . The cam - m anufac

turing p rocedure is as follows : the cams are first marked in the F - 1 2 1

machine and then subjected to rough machining using general - purpos e equip

m ent. After this the cams return to the F - 1 2 1 machine for finish milling

and contour grinding.

236

Content .. 57 58 59 60 ..