Ferm MD-350, MD-500 User Manual
Ferm B.V. • P.O. Box 134 • 8280 AC Genemuiden NL • Web: www.ferm.com 0107/18
USERS MANUAL
Metal turning lathe 02
BEDIENUNGSANLEITUNG
Metalldrehmaschine 11
GEBRUIKSAANWIJZING
Metaaldraaibank 21
MODE D’EMPLOI
Tour à métaux 31
BRUKSANVISNING
Vinkelslipmaskin 20
KÄYTTÖOHJE
Kulmahiomakone 24
BRUKSANVISNING
Vinkelsliper 29
BRUGER VEJLEDNING
Vinkelslibere 33
Art.nr: 330950
Art.nr. 330960
GB
D
NL
F
MD-350/MD-500
Ferm 51
BENCH LATHE MD-350 / MD 500
CAREFULLY READ THE INSTRUCTIONS BEFORE
YOU USE THE BENCH LATHE!
Carefully read this manual before using the machine. Make sure that you know how the machine functions and how
to operate it. Maintain the machine in accordance with the
instructions to make sure it functions properly. Keep this
manual and the enclosed documentation with the machine.
USE
The metal lathe has been designed for processing, mechanically removing metal, of ferrous and non-ferrous metals, synthetics and wood. The metal lathe is meant for semi-professional use and for leisure interests.
SAFETY INSTRUCTIONS
When using electric machines always observe the
safety regulations applicable in your country to reduce the risk of fire, electric shock and personal injury.
Read the following safety instructions and also the
enclosed safety instructions.
Keep these instructions in a safe place!
At the design of the machine is made allowance for the requirements for a safe use. Every change, adaptation, reconstruction or other adaptation use can cancel the safety
of the object. Besides the guarantee will expire through
this.
Before, after and during working with the lathe a number of
safety rules have to be taken. By the presence of turning
parts and sharp objects very severe injury can arise. Especially the bits of the turning chuck are very dangerous.
1. The lathe has been designed for manufacturing unruly
material and so it has to be able to develop a lot of power.
That is why touching turning parts is perilous. For this
reason unlawfully, undesirably or unintentionally switching on the machine has to be prevented, for example
by the pushed in locking of the emergency stop valve
by means of a small padlock.
2. By the elastic working of the chisel metal parts can
be shoot away with a big power at the most unexpected moments.
- Protection of the eyes is very important. Make it a habit
to wear special safety glasses when you are in the
space where the lathe stands. Buy yourself a professional and tested copy which you can wear for a long time and if need be for visitors a cheaper one, but this
one also has to be a good performance.
- If you take care of a cheerful workshop you can prevent
for example gripping in the machine or falling by stumbling over flinging about material.
3. Be very careful when you make turning pieces of
work with the hands.
- When you want to polish a surface turning, then take a
long piece of polish paper which you can place half
around the piece of work, with the ends to your direction.
- Never turn the ends around the fingers, never push
sand-paper on the piece of work with your hands.
- By turning, edges of the piece of work exist which are
sharp as a razor. These edges have to be smoothed off
with a file or a trimming hook.
4. Never remove chipcurls with your hands
Use a little hook which has been made by yourself of
thread or buy a professional chips hook.
5. Never grip over the turning machine or chuck
when during turning something falls in or behind
the bed.
Always first stop the machine. See that the covering
plate lies on the opening in the bed.
6. A good lighting prevents that you operate the machine from too close by.
- If you apply strip light you have to make allowance for
the so-called strobosto scopic effect. Through this a
turning object seems to stand still. A solution is the use
of double armatures by which a phase shifting of the
two strip lights has been accomplished.
7. Emergency stop
If a dangerous situation arises unexpectedly, for example if a badly exerted piece of work seems to get loose during turning, you van use the emergency stop by
giving a tap on the yellow cover of the safety switch,
marked “STOP”. The machine now stops without pushing in the switch button yourself.
GB
English
2 Ferm
SPARE PARTS FOR MD-350/MD-500
REF. NR. DESCRIPTION FERM NR.
0.01 Shears 400311
0.02 Intermediate gear spindle 400312
1.01 Locking handle 400300
1.03 Clamping nut 400301
1.05 Spindle 400302
1.06 Spindle bearing 400303
1.07 Handwheel for support 400304
1.08 Cover plate 400305
1.09 Spindle nut 400306
1.10 Tail stock 400307
1.11 Pinole MT-2 400308
1.12 Baseplate / bedplate 400309
1.13 Locking bolt 400310
2.02 Press handle 400313
2.03 Holder complete 400314
2.04 Axle pin tool holder 400315
2.05 Tool support (top) 400316
2.06 Sunk key 400317
2.09 Spindle 400318
2.14 Handle 400319
2.16 Nut (tool slide) 400320
2.17 Tool slide (under) 400321
2.18 Locking bolt 400322
2.20 Turning pin 400323
2.21 Key cross slide 400324
3.01 Handle 400325
3.04 Spindle 400326
3.05 Spindle nut 400327
3.10 Baseplate cross slide 400328
3.11 Hollow key 400329
3.13 Longidutinal direction spindle 400330
3.15 Hand wheel 400331
3.17 Half nut lever 400332
3.18 Half nut mechanism 400333
3.21 Longiditunal direction spindle (internal) 400334
3.22 Bearing 400335
4.03 Motor 400336
4.04 Motor pulley 400337
4.07 Headstock with cover 400338
4.08 Main spindle 400339
4.10 Main spindle pulley 400340
4.11 Intermediate pulley 400341
4.12 Tension roller 400342
4.16 Switch 400343
4.17 Bearing (lead screw) 400344
4.23 Thrust bearing 400345
4.24 Rack MD-350 400346
4.24 Rack MD-500 400367
4.24 Rack 400366
5.01 Gear 51 400347
5.02 Gear 68 400348
5.03 Gear 25 400349
5.04 Gear 75 400350
5.05 Gear 76 400351
5.06 Gear 24 400352
5.07 Gear 24 400353
5.08 Gear 76 400354
5.09 Gear 56 400355
5.10 Gear 56 400356
5.11 Change wheel 30 400357
5.12 Change wheel 42 400358
5.13 Change wheel 49 400359
5.14 Change wheel 28 400360
5.15 Change wheel 63 400361
5.16 Change wheel 70 400362
5.17 Change wheel 84 400363
5.18 Change wheel 98 400364
5.19 Change wheel 105 400365
- Center MC-3 400368
- Center MC-2 400369
- 3-Jaw chuck 400370
- 4-Jaw chuck 400371
- V-belt tension roller 400372
- Micro switch for door 400373
- V-Belt Z31 (10 x 790) 800114
- V-Belt Z28 (10 x 710) 800170
- V-Belt Z35 (10 x 890) 800197
- The reference numbers refer to the 5 annexes indicated
with the numbers 0, 1, 2, 3, 4, 5.
The number in front of the point refers to the Annex, the
number behind the point refers to the part.
So, reference 4.07 refers to Annex 4, part 7
- Die Referentienummer referieren auf 5 Beilage die Mittels
den Nummern 0, 1, 2, 3, 4 und 5 angegeben werden.
Die Nummer vor dem Punckt verweißt auf die Beilage, die
Nummer hinter dem Punckt auf das Unterteil. So die Verweißung 4.07 referiert auf Beilage 4, Unterteil 7.
- De Referentienummers verwijzen naar de 5 bijlagen aangegeven met de nummers 0, 1, 2, 3, 4 en 5.
Het nummer voor de punt verwijst naar de bijlage, het nummer achter de punt naar het onderdeel
Referentie 4.07 verwijst dus naar bijlage 4, onderdeel 7.
- Les numéros de reference se référent à les 5 annexes, indiquées avec les numéros 0, 1 ,2 ,3, 4 et 5. Le numéro devant
le point se réfère à l’annexe, le numéro à derrière le point se
réfère à la pièce détachée. Par conséquant la référence
4.07 se réfère à annexe n°4, pièce détachée n°7.
R
R
R
R
R
R
50 Ferm
TECHNICAL SPECIFICATIONS
Mains voltage 230 Volt
Mains frequency 50 Hz
Absorbed power 375 Watt
Center height 110 mm
Center distance MD-350 350 mm
Center distance MD-500 500 mm
Max. turndiameter above bed 200 mm
Max. turndiameter above support 115 mm
Culvert and recording main shaft 18 mm, MT-3
Number of speeds main shaft 6
No load speeds main shaft 120-2.000/min.
Automatic start 11 mm; 0,04 - 0,3
Thread cutting (right) 11 mm; M0,4 - M3
Distance toolholder centerline -
measured vertically 15 mm
Rotating plate movement: 3600
Graduation rotating plate: ± 450
Movement tool cut 70 mm
Movement cross slide 115 mm
Movement end slide 350 mm
Graduation slide screws 0,04 mm
Recording and stroke slide tube 50 mm; MT-2
Graduation slide tube 0,05 mm
Weight MD-350 110 kg
Weight MD-500 130 kg.
Sound pressure L
wa
70 dB(A)
Vibration value 2,8 m/s
2
THE MD-350 AND THE MD-500 ARE DELIVERED IN
THE FOLLOWING BASE PERFORMANCE.
Machinebed with prism conductor, ferme head with main
shaft and drive for automatic longitudinal feed and thread
cutting, tail stock with sliding tube and transverse adjustment, electro motor with start/stop- and sense of rotation
switch, support with lock case, combined with
starting/lead screw, cross slide with rotating plate and tool
slide, fourfold tool holder with index pin, 3-chuck with extra
exterior basins and measuring certificate, drive protection
case, 7 change wheels, 3 driving-belts, 2 centers, 3 openend spanners, 2 socket head wrenches, catch pin and a
tightening-wrench chuck.
Excluded under-carriage (art. nr.330957).
INSTALLATION
SPACE.
Next to a good maintenance it is very important the machine is installed drily, as the machine has been built up for de
biggest part of metal. Spaces can become moist by insufficient or a wrong ventilation, burning not regularly or by
raced walls and lifting moisture. Condensation of moisture
on the metal is caused by suddenly raising the temperature in a cold space. See that the temperature is equable.
UNPACKING AND INSTALLING
The machine is packed in a strong case which you can dismantle to six flat parts which can be put away easily. These
parts can be saved in case you have to transport the lathe,
for example for repair or for a removal. After you have opened the case the lathe has to be detached from the pallet.
For this you have to remove two nuts, in each bedfoot one.
Later the nuts can be used again. For lifting up the lathe
you may call in the help of an assistent, this depends on the
weight. Before you begin you have to arrange how to lift
the machine. You should rather put the machine from the
pallet on the permanent destination at one go. The best
thing is to grip the machine at the ends of the bed, so do not
grip it on the heads, transporter, change wheel case or
motor! The apparatus weights roughly 110 kg. For reducing the weight temporary a number of parts can be removed carefully, like the tail stock, the turning plate with building and the discs from iron cast. The lathe has to be level
and it has to be installed on a strong bottom. If you make an
under-carriage yourself you can use a steel U-profile of
sufficient lenght, on which you can sold or screw a leg construction. You can also use a strong wooden lower case
with a strengthened and flat upper blade, for example by
means of a piece of multiple worktop. The conditi on is that
the formation has to be stiff in every directions and that it
cannot fling about, bend or wobble. The lathe is fixed with
two bolts M10 in the special gaps in both bottom plates.
TIP:
You can take the following precautionary measures
for preventing that small roughnesses still cause tension
on the bed if you tighten the two bolts. You draw the place
of the two bottom platesand the two assembling gaps and
you assemble two bolts M10 in the foundation. Put on the
drawn places a layer epoxy filling. Install a plastic foil on
this. See that the bolts stay clear! Then install the workbench on the drawn place. Use the two bolts for this as the
conductor. Let down the bed on the foil and then harden
the filling. After that you can provide the bolts with the nuts
which are also used for the transport, and then you can
tighten these ones again.
ELECTRICAL CONNECTION
After the motor has been installed permanently a connection to the electrical installation has to be made. The machine has been made for use on the existing 230 Volts alternating current mains and hasn’t a power bigger than other big household equipment with a motor. Have an eart-
Ferm 3
Floor Stand / Unterschrank / Onderstel /
Bas de casse. Art.nr.: 330957
Accessories/Unterteile / Onderdelen /
Accessoires
V-Belt / Riemen / V-Snaar / Courroies t
rapézoïdales
Bottom side Support/Unterseite Support / Onderzijde support / Surface inférieure de support
The Suppory/Das Support / Het support /
Le support
Oil bath in gearbox/Ölbad im Zahnräderkasten
Oliebad in de tandwielkast/ Bain d’huile de boîte d’engrenage
Ferm 49
hed power point installed in the nearness of the machine
and see that the lead can be guided to the contact without
cracks and pulls. If need be an earthed extension cable
can be used, but see that the cable is unrolled entirely and
that it is not in the way.
ELECTRICAL SAFETY
Always check that the power supply corresponds to the
voltage on the rating plate.
REPLACING CABLES OR PLUGS
Immediately throw away old cables or plugs when they have been replaced by new ones. It is dangerous to insert the
plug of a loose cable in the wall outlet.
BEFORE OPERATION
For transport the machine has been greased with a layer
which prevents rust. This layer has no greasing function
and has to be removed with clothes. You can do this with a
solvant which is not aggressive, for example turpentine or
petroleum. When you are acquainted with metal-working
machines you can dismantle, control and oil several spare
parts with a light and universel machine-oil, for example
sewing-machine oil (sour free). Afterwards you finish the
complete maintenance table of chapter 14 ‘maintenance’.
ADJUSTMENT
The lathe has been adjusted to a minimum margin by the
factory. Because of transport some adjustments can be
changed. On the other hand the machine has been designed in such a way that any appearing margin can be lifted. This margin is also caused by wear end tear as a consequence of an intensif use. If re-adjustment does not have an effect anymore, the part is worned and has to be moved.
SPARE PART
Spindle tool slide
Tool slide
Spindle cross
slide
Cross slide
Transmission/
starting shaft
Tailstock
LIFTING A MARGIN
Loosen the front lock
nut, distort the back
lock nut clockwise,
until margin is minimum, turn back a
fourth part and tighten
the front lock nut
Loosen the lock nuts,
tightening the
adjusting nuts
clockwise until margin
is minimum, tighten
lock nuts
Watch spindle tool
support
Watch tool slide idem
Loosen front lock nut
and tighten hindmost
lock nut until margin is
no longer noticeable,
turn back a quarter
part and tighten the
front lock nut
Loosen clamping nut,
unscrew both adjusting nuts on both sides
a quarter part.
Move head with
adjusting screws until
the mark signs on the
right side of the head
correspond, tighten
the adjusting screws
again a bit without
moving the head, fixing the clamping nut.
RECOURCES
2 hook
spanners
screw-driver,
open end
wrench
idem
idem
idem
screw-driver,
open end
wrench
4 Ferm
48 Ferm
If all preparations have been done the machine can be
connected to the mains by putting the plug into the power
point. Beforehand check if the mains switch is “OFF” and
check if the turning directions is “RIGHT”. Watch the gauge once more and see if the oil level has not changed and if
necessary you have to fill it till the gauge half-full. See that
there is no paper or cleaning-rag for the ventilati on openings of the motor. Check the three-jaw and see that the
basins cannot come out of the jaw.
PUT THE JAW-WRENCH ON A PERMANENT
PLACE!
Open the protection case and check the position
and tension of the belts. For running on trial the lowest turning speed has to be chosen. You may shift the front belt,
watch fig.5 and 15.
Push in the switch and have the machine turned during 20
minutes. Check regularly if the head bearings in the headstock and the motor do not become hot by stopping the
machine and putting a hand on both side of the headstock
and on the motor body. Immediately stop if you hear a deviating noise and if you feel an abnormal heath development( more than handwarm) and first con tact your supplier.
Then switch over to a higher speed and have the machine
also function a few minutes on this speed. Do this again
with a reversed turning direction. If no problems have arisen, the machine is ready for use.
WORKING METHOD
Removing metal takes place by pushing under control a
chisel point or a boring point in the piece of work through
which small pieces of material - chips - are cut away. For
this the piece of work has to make a turning movement between two fixed turning points- the headstock and the tail
stock (watch fig.1) - which lie on a very precise, imaginary
line: the centerline(4). This can be turned off paral lelly to
the centerline over the whole lenght, by carrying the chisel
which has been fixed on the support(5) in a certain tempo
along the turning piece of work. This has to be done in a
straight line, with the hands or automatically with the transmission(6).
For removing material of the piece of work, power is needed. This power is transmitted from the motor to an empty
shaft in the headstock: the main shaft (2). In connection
with the maximum motorcapacity the quantity material
which has to be taken - the chip thickness and the width of
chip- has to be adapted. If the number of revolutions lowers too much, the starting depth or the rate of speed has
to be lowered. Otherwise there is a chance of motor damage, shorter tool life of the chisel or the chisel rupture. The
diameter of the piece of work is also influences this. If you
have a diamter of 100 mm more power is needed for cutting a chip of 1 mm than at a diameter of 10 mm.
When the tail stock (8) is placed next to the centerline because of cross adjustment, an outward conical plane is turned. An extra processing possibility over the lenght axle is
cutting a screw-thread. A special chisel cuts a spiral deepening in the outline of the piece of work. A part of the out-
line keeps on standing and this height difference forms the
ultimate screw-thread. Next to turning over the lenght axle, the ends of a piece of work can also be processed, for
example for making them flat and straight. Short pieces of
work can be fixed at one side in a fixed turning-point, the three-jaw chuck, and on the other side be processed at right
angles to the centerline. The basins of the chuck see to
maintenance of an imaginary centerline. By having occurred the chisel replace ment under an angle by adjustment
of the chuck, inward and outward conical planes can be
turned. With this strain borings can also be made in levelled surfaces. For that a drill chuck has to be bought separately. This drill chuck with morse cone peg has to be installed in the sliding tube (7) of the tail stock. Then the gaps
can be screwn out until the desired depht, diameter and
form.
IMPORTANT:
The precision of the pieces of
work is first and particularly depen dant of expertness and experience. During turning many
factors can influence the end result, like the sort and the
condition of the chisels, the nature of the material you want
to process, the turn and starting speed, the fixation of the
piece of work, the drafting and the condition of the machine. With the MD-350 it is possible to manufacture prolonged pieces of work with a big accuracy, if all circumstances
are perfect.
FOR THE BEGINNING TURNER.
During turning big powers on certain parts can be developed. If you use the machine incorrect these parts can be
damaged or deformed and wear end tear faster, even if
they have been made and designed very expertly and carefully. Through this the accuracy of the machine will decrease strongly, which directly influences the quality and
tahe preciseness of your pieces of work. So it is important
that the apparatus is tended in an expert way. Recommended is, if you are not a skilled turner, to start with simple pieces of work and to try the different possibilities of the lathe
with trial pieces of work. It is instructive to look at skilled turners, because you are not that fast a perfect turner! For pre
venting disappointments you have to become familiar with
the basic principles of turning. Turning is not for nothing a
profession. You can find referencebooks about metal working and metal turning in the library or in a book-shop. Besides model-building magazines write about this subject regularly. The best is getting into possession of a, if need be
obsolete, technical text-book. In this book is told about the
general principles of turning and many things worth knowing and handy summaries of problems with possible
causes and solutions.
FUNCTION OF THE MACHINE.
For a good understanding of the working of the machine
this one can for conve nience sake be divided in a number
of main groups and components, all with a special function. Watch fig.1.
Ferm 5
Ferm 47
THE MACHINE BED
The machine bed connects all these parts and has next to
it also other important functions. The bed (3) has been manufactured of highgrade grey cast iron and it is provided
with several filled cross ties. Because of the design and
the applied sorts of material tremblings are better absorbed and deforming because of charge is minimum. The
bed is provided with two sliding surfaces sharpened very
precisely, for the conducting of support and tail stock. These conduc tings, one prismatic and one flat, see to maintenance of the centerline(4).watch fig.2.
THE MOTOR
The attached alternating current motor is a carbon brushless 1-phase squirrel- cage motor with starting condenser.
The motor is maintenancefree and does not need a special treatment. By means of V-belts and plural belt discs,
the pulleys, the movement of the motor is transmitted to
the mains axis.
THE HEADSTOCK
The poured headstock(1) has been fixed on the bed with a
prism conducting and two face plates. On the back side is
an oil draining nut. The cover is remo vable for inspection
and for putting oil. At the bottom of the head you can find a
system of turning axis and toothed wheels. Because of
these toothed wheels the speed of the main shaft is retarded and transmitted to a double, coaxial output axis. On
this axis you can find the driving gear for the start and the
driving gear for the thread-cutting, watch fig.3. In the head
you can find the most important part of the machine, the
main shaft(2).
This one has been fixed revolving with two conical roller
bearings in an O- drafting. All turning parts in the head are
lubricated by means of an oil bath. The level of this is readable in the window on the front side. The main shaft has
been provided with a going on boring with on the right side
a fixing flange and a morse cone, for respectively the
chucks and the center.
THE SUPPORT
On the sliding surfaces on the bed the support(5) has been
fixed which sees that conducting tools along the piece of
work is checked. First the support consists of a bed slide
with lock case. This slide lies on the bed and serves as movement in the lenght direction. This movement can occur
with the hands or automatically by the transmission/feeding axis(6). In the last case the coach bolt has to be closed in the lock case. On the bed slide a second slide has
been installed which takes care of the chisel movement in
cross direction. By means of a spindle with follow nut this
slide can be moved or adjusted. On the cross slide a chuck
has been installed. With this the upper slide or tool slide
can be adjusted under an angle. The third and upper slide,
tool slide, can be replaced in any desired direction over a
distance of 70 mm and it follows every movement of all underlying slides also the chuck. On top of the tool slide a tool
holder has been installed. In this tool can be exerted to a
point height of maximum 15 mm, the vertical distance to
the centerline. The tool holder has a fourfold absorption
and has an indexing pin with four click points. Through this
can be changed of chisel very fast without having to adjust
again.
THE TAIL STOCK
The end of the centerline is formed by the tail stock (8). The
axis of the fixed and tail stock are exactly in each others extension. Depending on the lenght of the piece of work the
head can be moved over the bed and it can be fixed. With
the slide bush (7), in which a center has to be installed, the
piece of work can be exerted fixed and revolving right on
the centerline. If you turn back the slide bush, the center is
automatically untied. The body of the head has been divided. The upper part can be adjusted sideways with regard
to the upper part by means of adjusting screws. Through
this an adjustment next to the centerline can be obtained.
Normal movements in the lenght direction do not have
side ways adjustments as a consequence.
THE COMBINED TRANSMISSION/STARTING AXLE
For a good surface quality a correct and particularly a constant rate of turnover in the longitudinal direction is important. For longer pieces of work this is almost impossible
with your hands. By closing the lock nut the support is
coupled with the thread on the transmission. When the
transmission has been switched on this one has been
coupled to the main shaft in his turn. With this a coupling is
made with an intermediate wheel between the drive wheel
of the transmission and the drive wheel for the longitudinal
feed on the headstock. This happens because of an adjustment of the change wheel scissors, watch fig. 3 and 4.
At each rotation of the main shaft the support will move itself over a certain distance along the bed. This distance
depends on the wire haste and the chosen wheel change
on the transmission. By chosing another wheel change
the star ting speed can be adapted.
With thread-cutting the same happens in principle, however with a much bigger support movement with a much lower main shaft speed. In this case a coupling has to be made with the thread-cutting driving gear of the headstock.
The positioning of the gear wheels happens by the installation of the rings on the starting axle and intermediate
wheel axle of the scissors. In this case change of the change wheel on the transmission makes possible a choice of
the haste of the thread which has to be cut. On the transmission is no automatic cut out. So switch this one off for
preventing that the chisel runs against the chuck.
THE DRIVE
Since the applied motor has a fixed and relatively high
number of revolutions the transmission has been done in
such a way that this reduces the numbers of revolutions at
the same time. Besides, with the application of plural pulleys and an intermediate pulley this number of revolutions
is variable in six successive steps.
For lifting up possible belt tension differences the bearingmounted belt pressure roll has been made variable.
Watch fig.5. For reaching the three highest spindle
6 Ferm
46 Ferm
speeds the front belt has to be shifted from the intermediate-pulley to the motor pulley. The intermediate gear keeps
driven and serves as flywheel for catching load variations.
BASIC PRINCIPLES OF THE TURNING
Before you can start turning, you have to know the most
important basic under standings. Otherwise there is a
change that the wrong turning speed or the wrong chisel is
chosen. With a number of tables and rules making the machine ready for turning is easier.
CLAMPING
Clamping the piece of work has to happen with care. Put
the piece of work in the chuck as far as possible and clamp
this one with the tightening wrench. If you clamp too hard
the chuck, basins or the piece of work can be damaged.
The same applies for the sliding tube. Tighten this one with
your hands, strong but not by force. Some clamping examples by which also the use of bores and chisel is made
clear, can be seen in fig.6, 7 and 8.
The represented standard three-chuck is self-centring.
Through this the axis of a small piece of work falls exactly
on the centerline, even if the dead centre is not used. With
a chuck belongs an inside basin (represented) and an
outside basin. These ones are used for inside clamping of
bigger diameters. Every basin has in the chuck the same
place. Place and basin are numbered!
In fig.6 a right side cutting chisel (up) and a right bended
roughing tool is used. The arrows indicate the starting direction. The roughing tool can be used in longitudinal direction and in cross direction and is often used for quickly
elimina ting many material. Fig 7. shows the use of a left
side cutting chisel and a blind boring chisel. Fig.8 shows a
clamp with dead center in a tail stock. A pointed chisel has
been used for an egal finish. Under this figure a clamping is
represen ted for making a bore with a spiral drill. Beforehand you have to pre-drill with a center bore. This is a bore
from which the shank is much thicker than the crossing
frog. The boring gap which arises through that serves as a
center gap for both the center and the bore!
OPERATION OF MD-350 AND MD-500
Survey of the operation points with corresponding function (see fig.9,10 11 and 12).
1 Combined on/of direction of rotation switch with
emergency feature blocked.
Switching on the motor and chancing the direction of
stop rotation, the valve kan be blocked with a lock.
2. Drive cupboard closing
For opening and closing of the case
3. Carriage nut handle
By closing the carriage nut, the
automatic starting is
switched on.
4. Handwheel longitudinal adjustment.
For quickly moving the support to the left and to the
right. On the nonius can be written how big the adjustment is in steps of 0,04 mm.
5. Clamping handle tool holder
By unloading the handle the bit block can be turned in
steps of 90 °
6. Clamping handle sliding bush.
For fixing the sliding bush.
7. Handwheel sliding bush
By turning the piece of work can be clamped between
the chuck and the center; also used for boring; on the
nonius can be written how big the adjustment is in
steps of 0.05 mm.
8. Handwheel crank tool slide
for the longitudinal adjustment of the tool slide; on the
nonius can be written how big the adjustment is in
steps of 0.04 mm.
9. Handwheel crank cross slide
for the longitudinal adjustment of the cross slide; on
the nonius can be written how big the adjustment is in
steps of 0.04 mm.
10 Clamping nut tail stock
for clamping the tail stock to the bed; for clamping the
upper part to the bottomplate.
11 Clamping nuts rotary plate
After the desired corner has been adjusted the rotary
plate parts can be clamped on each other with this.
12 V-belt tension roller
Makes it possible to change V-belts, to clamp and shift
them without dismantling the pulleys.
13 Main shaft pulley
Adjusting rotary speed.
14 Intermediate pulley
Adjusting rotary speed.
15 Motor pulley
Adjusting rotary speed.
16 Scissor
for assembling an intermediate change wheel and being able to adjust this in three directions. Coupling
transmission
17 Clamping bolt link adjustment
By adapting the position of the quadrant the intermediate drive wheel and the transmission change wheel
Ferm 7
Annex 5/Anlage 5
GEAR WHEEL, SPINDLE AND WASHERNUT DATA
ANGABEN ZU ZAHNRAD, SPINDEL UND UNTERLEGMUTTER
Nr. Parts/tooth Pitch/mod. Spec./Dim.
Nr. Zubehörteil/Zähne Gew. St. Bes./Abm.
MAIN SHAFT/HAUPTWELLE
1 Gear wheel/Zahnrad/51 /1 /D8
2 Gear wheel/Zahnrad/68 /1 /D8
3 Gear wheel/Zahnrad/25 /1 /D8
4 Gear wheel/Zahnrad/75 /1 /D8
5 Gear wheel/Zahnrad/76 /1 /D8
6 Gear wheel/Zahnrad/24 /1 /D8
7 Gear wheel/Zahnrad/24 /1 /D8
8 Gear wheel/Zahnrad/76 /1 /D8
9 Gear wheel/Zahnrad/56 /1 /D8
10 Gear wheel/Zahnrad/56 /1 /D8
CHANGE WHEELS/WECHSELRÄDERN
11 Gear wheel/Zahnrad/30 /1 /D8
12 Gear wheel/Zahnrad/42 /1 /D8
13 Gear wheel/Zahnrad/49 /1 /D8
14 Gear wheel/Zahnrad/28 /1 /D8
15 Gear wheel/Zahnrad/63 /1 /D8
16 Gear wheel/Zahnrad/70 /1 /D8
17 Gear wheel/Zahnrad/84 /1 /D8
18 Gear wheel/Zahnrad/98 /1 /D8
19 Gear wheel/Zahnrad/105 /1 /D8
SUPPORT/SUPPORT
20 Gear wheel/Zahnrad/17 /1 /D8
21 Gear wheel/Zahnrad/51 /1 /D8
22 Gear rack/Zahnstange /2 *) /L425
23 Gear wheel/Zahnrad/17 /2 *) /D8
24 Lock nut/Schloßmutter M3/ *) /L30
25 Starting shaft/Anlaufwelle *) /L425
26 Washer nut/Unterlegmutter M2/ *)
27 Spindle/Spindel *)
28 Washer nut/Unterlegmutter M2/ *)
29 Spindle/Spindel *)
TAILSTOCK/REITSTOCK
30 Washer nut/Unterlegmutter M2/ /L27 *)
31 Spindle/spindel /L50 *)
*) This parts are already mentioned in the list op parts.
*) Diese Teile sind bereits im Zubehörverzeichnis erwähnt.
Bijlage 5/Pièce annexe 5
TANDWIEL-, SPINDEL- EN VOLGMOERGEGEVENS
ROUE DENTÉE, BROCHE ET DONNÉES D'ÉCROUS D'ORDRE
Nr Onderdeel/tanden spoed/Mod. bijz./afm.
N° Pièce detachee/N° dents urgence/mod. part./dim.
HOOFDAS/ESSIEU PRRINCIPAL
1 tandwiel/roue dentée/ 51 /1 /D8
2 tandwiel/roue dentée/ 68 /1 /D8
3 tandwiel/roue dentée/ 25 /1 /D8
4 tandwiel/roue dentée/ 75 /1 /D8
5 tandwiel/roue dentée/ 76 /1 /D8
6 tandwiel/roue dentée/ 24 /1 /D8
7 tandwiel/roue dentée/ 24 /1 /D8
8 tandwiel/roue dentée/ 76 /1 /D8
9 tandwiel/roue dentée/ 56 /1 /D8
10 tandwiel/roue dentée/ 56 /1 /D8
WISSELWIELEN/ROUES DE RENVOI
11 tandwiel/roue dentée/ 30 /1 /D8
12 tandwiel/roue dentée/ 42 /1 /D8
13 tandwiel/roue dentée/ 49 /1 /D8
14 tandwiel/roue dentée/ 28 /1 /D8
15 tandwiel/roue dentée/ 63 /1 /D8
16 tandwiel/roue dentée/ 70 /1 /D8
17 tandwiel/roue dentée/ 84 /1 /D8
18 tandwiel/roue dentée/ 98 /1 /D8
19 tandwiel/roue dentée/ 105 /1 /D8
SUPPORT/SUPPORT
20 tandwiel/roue dentée/ 17 /1 /D8
21 tandwiel/roue dentée/ 51 /1 /D8
22 tandheugel/crémaillère /2 *) /L425
23 tandwiel/roue dentée/ 17 /2 *) /D8
24 slotmoer/écrou de verrouillage M3/ *) /L30
25 aanzetas/arbre d'entraînement *) /L425
26 volgmoer/écrou d’orde M2/ *)
27 spindel/broche *)
28 volgmoer/écrou d’ordre M2/ *)
29 spindel/broche *)
LOSSE KOP/CONTRE-POUPÉE
30 volgmoer/écrou d’ordre M2/ /L27 *)
31 spindel/broche /L50 *)
*) Deze onderdelen staan reeds vermeld in de onderdelentabel.
*) Ces pièces détachées sont déjà mentionnées dans le tableau
des pièces
5
Ferm 45
can be placed. Switching the transmission on and off.
18 Intermediate change wheel
Direction of rotation transmission; adjusting the transmission ratio
19 Chance wheel transmission.
Adjusting transmission ratio; by means of placing filling rings the wheel can be adjusted in axial
direction(fig.3)
Longitudinal motion support
20 Transmission/lead screw
fixation intermediate change wheel; by means of installing the filling rings he wheel is axial adjustable and
with the lowest shaft nut the wheel is adjustable sideways
21 Intermediate change wheel.
In front of the thread-cutting wheel, behind the starting
wheel
22 Drive gear wheels for start.
by using this clamping device for surfacing and threadcutting the lock nut can stay open and the support
does not slip away; spindle and nut are less charged
then.
23 Clamping bolt cross slide.
CHISELS
During turning a chip is cut out of the piece of work. For this,
chisels have to be sharpened in a special and sharp form.
This form depends on the chisel material and on the material you want to cut. Watch the next table.
On the basis of fig. 13 the corners of this table can be taken
over on a little piece square high-speed steel for making or
re-sharpening your own chisel. In this example we are talking about a straight, right roughing tool. The dotted lines
indicate the original form of the bar. The sum of the angles
1,2 and 3 is always 90°. Angle 1 is the cutting-edge side rake, angle 2 the wedge angle and angle three the clearance
angle. For keeping the friction as low as possible, two extra clearance angles have been sharpened: angle 4 and
angle 6. Besides, a slope angle 5 has been installed. The
arrow indicates the starting direction. The front face is called the minor cutting face. The main cutting face is the part
on which the arrow has been drawn. In this way all possible
chisels can sharpen themselves, by which you have to say
where the main cutting face has to be and what the turning
material has to be.
A perfectly sharpened chisel has to be placed in the tool
holder in the right way now. Fig.14 indicates a correct pla-
cing of a pointed chisel. Point 1 is the center line. The tip of
the chisel has to stand exactly that high. If not, you have to
use bearing plates(5). The chisel always has to be placed
against the block body(4) and cannot extend farther than 1
to 1.5 time the tool shank thickness(2).
It goes without saying that all clamping bolts (3) have to be
tightened strongly.
TURNING SPEED
If the chisel have been sharpened and put, the piece of
work has been clamped well, the speed of the main shaft
has to be adjusted with the V-belts, watch fig. 15 and 16. In
the subjoined table some machining speeds which happen many times are indicated for different sorts of chisels
and materials.
With this table you can chose yourself for any diameter the
right speed. The only thing you have to do is fill in the desired speed in the following formule.
v = cutting speed in meters per minute
d = diameter of the piece of work in mm
n = number of revolutions in revolutions per minute
π = constant, nl. 3,14
Calculation example:
1. A round piece of silver steel of 100 mm has to be turned
with a HSS chisel. You can find in the table that silver
steel has to be turned with 32m/min, v=32
Divide 32.000 by 100 gives a number of revolutions of
320 revolutions per minute. We put belt 2 on the hindmost discs of the intermediate and main shaft pulley.
2. A piece of copper of 10 mm is turned with a HM-chisel.
v=200 and through that “n” comes far above the maximum number of revolutions. The highest number of revolutions can be adjusted. Belt two is layed on the
hindmost disc of the motor and main shaft pulley.
v =
π ¥ d ¥ n =v ¥ 1000
1000 π ¥ d
Turning material Chissel Turning speed
material REV/MIN
Unalloyed structural steel HSS 40 - 60
(9S20k - 60S20k) P10 140 - 160
Alloyed structural steel HSS 32
Tool steel P10 112
(C80= Silversteel)
Cast Iron HSS 40
K10 100
Non-Ferrous HSS 45 - 80
(Cupper, Aluminium) K10 140 - 280
Chisel corners Light cut Normal cut Heavy cut
HSS HM HSS HM HSS HM
cutting-edge
side rake
12 10 10 5 5 0
Clearance
angle
867564
Wedge
angle
70 74 73 80 79 86
8 Ferm
Annex 4
List of parts
BED/HEADSTOCK
Nr. Part
1. Bed
2. Motor base plate
3. Motor
4. Motor pulley
5. Guard
6. Mounting plate
7. Headstock with cover
8. Mains spindle
9. Bearing cover
10. Main spindle pulley
11. Idler
12. Tension pulley
13. Bolts with ring
14. Chuck headstock
15. Oil cup
16. Switch
17. Longitudinal and traerse
motion bearing
18. Longitudinal traverse (lathe
spindle
19. Bearing housing drive shaft
20. Drive shaft longitudinal and
transverse motion
21. Bush
22. Castle locking nuts
23. Axial thrust bearing
24. Gear rack
Anlage 4
Zubehörverzeichnis:
MASCHINENBETT/
SPINDELSTOCK
Nr. Zubehörteil
1. Maschinenbett
2. Motorstellplatte
3. Motor
4. Motorriemenscheibe
5. Schutzkasten
6. Befestigungsplatte
7. Spindelstock mit Deckel
8. Hauptwelle
9. Lagerdecke
10. Hauptwellenriemenscheibe
11. Zwischenriemenscheibe
12. Spannrolle
13. Bolzen mit Ring
14. Spannplatten Spindelstock
15. Ölstopfen
16. Schalter
17. Fördererlager
18. Längsvorschub (Leitspindel)
19. Lagergehäuse Antriebswelle
20. Antriebswelle Fördere
21. Kupplungsschale
22. Kronensicherungsmuttern
23. Axialdrucklager
24. Zahnstange
Bijlage 4
Onderdelenoverzicht
Bed/Vaste kop
Nr.
Onderdeel
1 bed
2 motorstelplaat
3 motor
4 motorpoelie
5 beschermingskast
6 bevestigingsplaat
7 vaste kop met deksel
8 hoofdas
9 lagerdeksel
10 hoofdaspoelie
11 tussenpoelie
12 spanrol
13 bouten met ring
14 spanplaten vaste kop
15 oliedop
16 schakelaar
17 transporteur-lager
18 langsvoeding (leispindel)
19 lagerhuis aandrijfas
20 aandrijfas transporteur
21 koppelbus
22 kroonborgmoeren
23 axiaal druklager
24 tandheugel
Pièce annexe 4
Aperçu pièces détachées:
Banc/Poupée fixe
N° pièce détachée
1. banc
2. plaquette de réglage moteur
3. moteur
4. poulie de moteur
5. boîte de protection
6. plaquette de fixation
7. poupée fixe avec couvercle
8. essieu principa
9. couvercle de roulement
10. poulie de l'essieu principal
11. poulie intermédiaire
12. galet de tension
13. boulons avec rondelle
14. plaques de tension
poupées fixe
15. bouchon de vidange d'huile
16. commutateur
17. roulement de transport
18. avance longitudinale (broche de guidage)
19. arbre d'entraînement de
boîte de roulement
20. arbre d'entraînement transporteur
21. douille de connexion
22. écrous de blocage à créneauxt
23. butée à vis sans fin
24. crémaillère
4
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