REMS Unimat 75 Instructions D'emploi page 11

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2.4. Stock support
Longer pipes and bars must be supported with the height-adjustable REMS
Herkules, which features steel balls for trouble-free movement of the
pipes and bars in all directions without tilting the stock support unit. If long
pipes or bars are processed frequently, two REMS Herkules are recom-
mended.
3. Setting the thread size
3.1. Mounting (changing) the die head
To avoid changing the die set (die stock chaser and holder) in the die head,
replacement die heads are recommended. Instead of the die set being
changed in the die head, the entire head is changed (shorter resetting
time). To do so, remove the three bolts (6) (Fig. 4) with the pin spanner
(7) (Fig. 5) and take the die head forwards out of its fitted seat. When po-
sitioning the die head, ensure that the fitting surfaces of the die head and
the mounting on the gearbox have been carefully cleaned. The closing
lever driver, which projects beyond the rear of the die head, must be ins-
erted into the mating part of the gearbox in a specific position. Care must
therefore be taken to ensure that the locking pin, which locks when the
die head retracts, is positioned level with the line marking. When instal-
ling the die head, turn the closing lever (1) to the left or right, as neces-
sary until the driver engages.
Caution: The driver is not square.
3.2. Mounting (changing) the closing lever
Depending on the thread type, the following closing levers – with differing
designations as appropriate – are required:
R for right-hand tapered pipe thread (ISO R 7, DIN 2999, BSPT, NPT)
R-L for left-hand tapered pipe thread (ISO R 7, DIN 2999, BSPT, NPT)
G for right-hand cylindrical pipe thread (ISO 228, DIN 259, BSPP, NPSM,
Pg, BSCE, M x 1.5 (IEC))
G-L for left-hand cylindrical pipe thread (ISO 228, DIN 259, BSPP, NPSM)
M for right-hand metric bolt thread (DIN 13), UN thread (UNC, UNF),
BS thread (BSW, BSF)
M-L for left-hand metric bolt thread (DIN 13), UN thread (UNC, UNF), BS
thread (BSW, BSF)
For left-hand threads, the die head cover must be turned and the stop
screw (3) (Fig. 2) changed over. Please note here that when looking
onto the die head (Fig. 2), the stop screw (3) is to the left of the closing
lever (1) for right-hand threads, and (after changing round the die head
cover and the stop screw) to the right of the closing lever (1) for left-hand
threads.
Important:
The wrong closing lever or incorrectly inserted stop screw will lead to
damage to the machine.
3.3. Mounting (changing) the die set
To change the die set (die stock chaser and holder), it is best to remove
the die head from the machine and place it on a table as described under
3.1. Then remove two cover bolts (8) (Fig. 4) using the pin spanner (7)
(Fig. 5), remove the cover, open the closing lever, and lever out holder
No. 1 with a screwdriver as shown in Fig. 6. Remove the other holders.
Clean the square end of the die head. Install a new die set, starting with
holder No. 1. The last holder must fit precisely and be capable of being
installed easily (without the aid of any tools, such as a hammer). If ex-
cessive clearance is present (worn holder), the thread tolerances will in-
crease accordingly. If there is no clearance at all, i.e. the holders are jam-
med, it will not be possible to open or close the die head closing lever,
which may break. Reinstall the cover, tighten the bolts and check that the
closing lever can turn. It must be possible to turn it by hand back and forth
(open and close the die set). If this is not the case, the die set must again
be dismantled and the square end, holder and cover checked for chips.
Incorrect handling may also damage the edges of the holder. This da-
mage can be repaired with a file.
If the die set in the machine is changed, care must be taken to ensure that
the closing lever is up when the holder is removed, to prevent chips drop-
ping into the recess for the setting spindle. After removing the holder, clean
the die head. Before installing the new die set, starting with holder No. 1,
place the closing lever in the down position (install holders in the sequence
1, 2, 4, 3).
4. Operation
4.1. Right-hand / left-hand thread
Ensure that the correct closing lever and the stop screw is correctly in-
serted for the selected die set (see 3.2.) and that the direction of rotation
of the die head is correctly set at the reversing switch (5) (Fig. 3) (see 2.2.).
4.2. Setting the thread diameter
The required thread diameter is set at the setting spindle (10) (Fig. 2) using
the square-section spanner (9) (Fig. 5). Rough setting is achieved by adjus-
ting the setting spindle until the appropriate mark on holder No. 1 (win-
dow in die head (11)) is aligned with the mark on the die head. Fine set-
ting is achieved with the aid of the fine setting tabler provided with each
machine and stating a setting number of the setting spindle for each thread
diameter. This setting number must be aligned with the mark (12) provi-
ded above the setting spindle on the die head. For left-hand threads, the
mark on the opposite side (13) applies. Great care must be taken that du-
ring the setting operation the closing lever (1) is against the stop screw
(3), i.e. that the die head is closed. If die sets otherthan those supplied
with the machine are used, the setting number must be determined by
the user himself with a plug or socket thread gauge or a sample thread.
4.3. Setting the length stop
The required thread length is set at the length stop (14) (Fig. 4). To do so,
release clamping lever (15) and set the length using the scale (16). If ne-
cessary, move the transmission unit with the die lever (17) to the left. With
a tapered pipe thread, the standard thread length is achieved automati-
cally when the length stop is set to the required thread size using the
scale (16).
See 4.6. for long thread.
4.4. Selecting the speed
REMS Unimat 75 has 2 speeds. For smaller thread diameters (up to ap-
prox. 45 mm), the speed 70 rpm is selected by pressing the button II (18)
(Fig. 4). For higher thread diameters (above 45 mm), the speed 35 rpm
is selected by pressing the button I (19). Harder stock or very coarse thread
may require an earlier changeover to 35 rpm.
REMS Unimat 77 has 4 speeds. In addition to the electrical speed selec-
tion using buttons I (19) and II (18), 2 further speeds are obtained by
pushing or pulling the gear shift lever (20):
8 rpm: gear shift lever pushed
+ button I hard-to-machine materials 3 to 4"
16 rpm: gear shift lever pushed + button II
normal-machined materials 3 to 4"
hard-to-machine materials 1
25 rpm: gear shift lever pulled + button I
normal-machined materials 1
hard-to-machine materials up to 1"
50 rpm: gear shift lever pulled + button II
normal-machined materials up to 1"
4.5. Chucking the stock
The closing lever (1) (Fig. 2) is closed.
Mechanical vice:
Carefully insert the stock right up against the chaser dies. The stock is
chucked in self-centering fashion using the chucking lever (23) (Fig. 4).
Pneumatic vice:
The pneumatic vice is set to the diameter to be chucked in the following
manner:
Loosen clamping screw (27). Open the vice with the chucking lever (23).
Press the pedal switch to advance the pneumatically operated chucking
jaws. Slide the supplied spacer plate between the pneumatically opera-
ted chucking jaw and its chucking jaw element. Retract the pneumatically
operated chucking jaw by releasing the pedal switch. Close the vice ma-
nually using the chucking lever (23) until the jaws are just in contact with
the stock. Tighten clamping screw (27). Operate the pedal switch and
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