Thread-Cutting - Ferm MD-500 Bedienungsanleitung

Annex 3 Anlage 3
TRAVERSING SLIDE/APRON LÄNGSSCHLITTEN/
SCHLOßKASTEN
Nr. Part
Nr. Zubehörteil
1. Handwheel lever
1. Handradkurbel
2. Socket head screww
2. Inbusbolzen
3. Spindle Bearing
3. Spindellager
4. Spindle
4. Spindel
5. Spindle nut
5. Spindelmutter
6. Castle locking nut
6. Kronensicherungsmutter
7. Vernier
7. Nonius
8. Socket head screws
8. Inbusbolzen
9. Socket head screws
9. Inbusbolzen
10. Cross slide base
10. Querschlittenunterteil
11. Key
11. Achsnagel
12. Apron
12. Schloßkasten
13. Shaft for left and right hand
13. Welle Längsverstellung
motion
14. Lagerabdeckplatte
14. Bearing cover plate
15. Handrad
15. Handwheel
16. Lagerabdeckplatte
16. Bearing cover plate
17. Schloßmutterkurbel
17. Half nut lever
18. Schloßmuttermechanis-
18. Half nut mechanism
mus
19. Leadscrew and half nut
19. Leitspindel- und Schloß-
guide
mutterführung
20. Eye bolts and keys
20. Achsnagelinbusbolzen
21. Shaft for left and right hand
21. Welle Längsverstellung
motion/ring
22. Lager
22. Bearing with 2 socket head
bolts 23. Zahnrad Längsverstellung
23. Gear wheel for left and right
hand motion
44
Bijlage 3 Pièce annexe 3
L A N G S S L E D E / S L O T - CHARIOT LONGITUDIN-
KAST
AL/PALASTRE
Nr. Onderdeel
N° Pièce
1 Handwielkruk
1. manivelle
2 Inbusbouten
2. boulons à 6 pans
3 Spindellager 3. roulement de broche
4 Spindel
4. broche
5 Spindelmoer
5. écrou de broche
6 Kroonborgmoer 6. écrou de blocage à cre-
7 Nonius
neaux
8 Inbusbouten
7. vernier
9 Inbusbouten 8. boulons à 6 pans
10 Dwarsslede onderstuk
9. boulons à 6 pans
11 Spie
10. chariot transversal
12 Slotkast 11. clavette
13 As langsverstelling
12. palastre
14 Lagerafdekplaat
13. réglage longitudinal
15 Handwiel 14. plaquette de protection de
16 Lagerafdekplaat
roulement
17 Slotmoerkruk
15. roue à mains
18 Slotmoermechanisme
16. plaquette de protection de
19 Leispindel- en slotmoerge-
roulement
leider
17. poignée à écrous de ver-
20 Spie-inbusbouten
rouillage
21 As langsverstelling en ring
18. mécanisme d'écrous de
22 Lager met 2 inbusbouten
verrouillage
23 Tandwiel langsverstelling
19. broche glissière et conduc-
teur
20. boulons à 6 pans de clavette
21. essieu de réglage longitu-
dinal
22. roulement
23. roue dentée réglage longi-
tudinal

THREAD-CUTTING

Next to the usual turning work you do with the MD-350 you
can also cut screw- thread with this machine. For this spe-
cial chisel have to be used. The technique of thread-cut-
ting is not very simple. For reaching a correct fit with thre-
ad-cutting, both the thread profile and the minor and outs-
ide diameter have to be very accurate. Therefore many
turners use existing machine screw taps. Screw plates
can be used in the same way, however a fitting holder has
to be made yourself. Cutting takes place with very low
numbers of revolutions( often 70 revolutions per minute)
or if need be by cranking, turning the main shaft with your
hands.
For the cutting of inchthread, a separate set of gears
is required. This set is not included. This set is availa-
ble at your dealer under Nr. 330961.
The continuously repeating distance between two perma-
nent points of a screw thread is called the thread haste. If
you are going to cut you always have to adjust this thread
haste. This happens by chosing a certain change wheel
com bination on the scissors. In fig.17 on the left side a
single transmission for thread-cutting is indicated ( a so-
called single work) and on the right side a double transmis-
sion for the automatical starting is indicated( so-called
double work). Through this the support is moved over a
certain distance during a rotation of the main shaft. In the
headstock two fixed transmission have been builded in,
namely 1 : 4 for thread haste and 1 : 40 for starting, which
decide the number of revolutions of the coaxial datum
axis. From this datum the end transmission has to be cal-
culated. For calculating this some formulas exist, but for
the sake of convenience we already indicated the most
current thread haste dimensions in the subjoined table. All
indicated wheels are delivered automatically with the ma-
chine! Installing or adjusting the change wheels happens
by shifting the scissors and the intermediate wheel axle
and by placing the filling rings. Adjust the change cog-
wheels margin.
Pitch Starting
(mm) (mm)
0.4 0.04
0.5 0.05
0.7 0.07
0.8 0.08
1.0 0.1
1.25 0.125
1.5 0.15
1.75 0.175
2.0 0.2
3
2.5 0.25
3.0 0.3
Ferm Ferm
Besides, in the table - second column- is mentioned how
the starting size by means of the same change wheels can
be adjusted.
INCH
n
48
40
32
24
20
16
14
12
11
8
Nr. of teeth per wheel
A B C
49 - 105
70 - 84
70 98 84
105 98 49
98 - 42
84 105 42
105 - 28
84 98 28
49 98 42
63 105 28
49 105 30
A B C
70 79
70 84 79
105 98 49
98 40
70 84 40
56 84 40
49 105 50
49 98 40
49 105 39
50 105 28
9