REMS Unimat 75 Notice D'utilisation page 11

eng
2.4. Material support
NOTICE
Longer pipes and bars must be supported by the height-adjustable REMS
Herkules (Art. No. 120100). This has steel balls for easy movement of the pipes
and bars in all directions without the material support tipping over. Two REMS
Herkules are an advantage for frequent processing of long pipes or bars.
3. Setting the thread type and size
3.1. Mounting / changing the die head
To avoid having to change the die set (chase dies and holder) in the die head,
interchangeable die heads with mounted die sets and closing levers are recom-
mended. Here, the complete die head is changed instead of the die set in the
die head so that the tooling time can be reduced considerably.
The tube for the thread cutting material must be turned to the side (28) (Fig. 4)
before applying the die head. To do this, loosen the fillister head screw (30)
(Fig. 11) and turn the tube. When mounting the die head, make sure that the
contact surfaces of the die head and the contact surface for holding the die
head on the hollow spindle (41) are cleaned carefully. To apply the die head to
the contact surface of the hollow spindle, it is an advantage of the driver holder
(41) (Fig. 11) is positioned on the hollow spindle to face upwards. The driver
(29) (Fig. 11) of the closing lever (1) (Fig. 11) which protrudes over the rear of
the die head must be inserted into the mating piece in the hollow spindle in a
certain position when mounting the die head. Make sure that the closing pin
(39) (Fig.11) which closes the die head when moving back is at the same height
as the mark (40) (Fig. 11). The handle of the closing lever (1) (Fig. 11) must
stand radially when applying the die head and must be turned to the left or right
if necessary until the driver engages the closing lever. Tighten the 3 screws (6)
(Fig. 6) of the die head with the pin wrench (7) (Fig. 5). Position the tube for
the thread cutting material (28) (Fig. 4) so that the chase dies are cooled/
lubricated during the thread cutting process.
Before removing the die head from the machine, the closing pin (39) (Fig. 11)
should be at the same height as the mark (40) (Fig. 11). Remove the 3 screws
(6) (Fig. 6) of the die head with the pin wrench (7) (Fig. 5) and remove the die
head from the contact surface to the front.
3.2. Mounting (changing) the closing lever
The following closing levers, with the appropriate different designations, are
required depending on the type of thread:
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 parallel pipe thread (ISO 228, DIN 259, BSPP, NPSM, Pg,
Fg, BSCE, M × 1,5 (IEC))
G-L for left hand parallel pipe thread (ISO 228, DIN 259, BSPP, NPSM)
M for right hand metric bolt thread (ISO 261, DIN 13), UN-thread (UNC,
UNF), BS-thread (BSW, BSF)
M-L for left hand metric bolt thread ((ISO 261, DIN 13), UN-thread (UNC, UNF),
BS-thread (BSW, BSF)
The respective closing lever can only be changed in a certain position.
Mounting/changing the closing lever with die head mounted on the machine:
Before changing the closing lever, it must be turned so that the closing pin (39)
(Fig. 11) is at the same height as the mark (40) (Fig. 11). Now unscrew the
fillister head screws (8) (Fig. 2), remove the cover (4) (Fig. 2) and unscrew the
locking screw (36) (Fig. 11) with a screwdriver. Mount/change the closing lever.
Mounting/changing the closing lever with die head removed from the machine:
Unscrew the fillister head screws (8) (Fig. 2), remove the cover (4) (Fig. 2) and
unscrew the locking screw (36) (Fig. 11) with a screwdriver. If the die head with
the closing lever at the top is seen as a clock, the closing lever can be changed
at approx. 7 o'clock for a parallel right hand thread and at approx. 9 o'clock for
a tapered right hand thread (approx. 5 o'clock accordingly for parallel left hand
thread and approx. 3 o'clock for tapered left hand thread).
Closing lever for left hand thread:
For right hand threads (as-delivered state) the stop screw (3) is mounted to the
left of the closing lever (1) when looking onto the die head from above (Fig. 2).
For left hand threads the cover (4) (Fig. 2) must be turned over and the stop
screw (3) (Fig. 2) moved, i.e. the stop screw (3) must be mounted on the right
of the closing lever (1).
NOTICE
An incorrectly mounted stop screw (3) (Fig. 2) will be sheared off when it hits
the trigger cams! The die head must be in the end position to check the direc-
tion of rotation. To do this, turn the start cutting lever (17) (Fig. 4) clockwise to
the stop. Note position of the changeover switch (5): position 2 = right hand
thread, position 1 = left hand thread.
The machine will be damaged if the wrong closing lever is used or the
stop screw is mounted incorrectly!
3.3. Mounting (changing) the die set
It is an advantage to remove the die head from the machine and place it on a
bench to change the die set (chase dies and holder) as described in 3.1. Then
remove the two cover screws (8) (Fig. 2) with the pin wrench (7) (Fig. 5), remove
the cover (4) (Fig. 2), open the holder with closing lever and lever out the holder
no. 3 with a screwdriver as shown in Fig. 6. Remove the other holders.
Clean the holder, cover and square bar of the die head thoroughly.
Insert the new die set. Insert holder no. 1 in position 1, holder no. 2 in position
2, holder no. 4 in position 4 and holder no. 3 in position 3 of the die head. The
last holder must fit easily and exactly without using tools, e.g. a hammer. If
there is too much play, e.g. due to a worn holder, increase the thread tolerances.
If there is no play, i.e. the holders jam, the closing lever can no longer open
and close the die head.
NOTICE
This leads to breaking of the closing lever.
Fit the cover (4) Fig. 2), tighten the screws and check the smooth action of the
closing lever. This must move backwards and forwards to both end positions
by hand (open and close the die set). If not, the dies set must be removed again
and the square bar, holder and cover recleaned. Improper handling can also
damage the edges of the holders. This damage must be repaired properly with
a fine or oilstone. If the die set is changed in the machine, make sure that the
die head is aligned with the closing lever at the top to remove the holders from
the die head so that no chips can fall into the gap between the adjustment
spindle. Only remove the holders in the order 1, 2, 4, 3.
Set the closing lever to the down position before inserting the new die set. First
insert holder no. 1 then the other holders in the order 2, 4, 3.
4. Operation
4.1. Right hand thread – left hand thread
NOTICE
Make sure that the right closing lever has been inserted and the stop screw
mounted correctly for the selected die set (see 3.2.) and that the direction of
rotation of the die head is set correctly at the changeover switch (5) (see 2.2.).
4.2. Setting the thread size
Make absolutely sure that the closing lever (1) (Fig. 2) is touching the stop
screw (3) (Fig. 2) during the setting process, i.e. the die head is closed. The
desired thread size is set with the square wrench (9) (Fig. 5) at the setting
spindle (10) (Fig. 2). The rough setting is made by adjusting the setting spindle
until the appropriate mark on holder no. 1 in the oval window (11) (Fig. 2) is in
line with the mark in the die head (38) (Fig. 2). The fine setting is made using
the fine setting table enclosed with every die set (Fig. 14) the number of which
must match the number of the corresponding die head. A setting number (45)
(Fig. 14) of the adjusting spindle is noted in the fine setting table for every thread
size (44) (Fig. 14). This setting number must be brought into line with the mark
on the die head above the adjusting spindle (12) (Fig. 2). Always approach the
setting number by turning to the right. If the setting number is "8", for example,
the adjusting spindle must be set to "6" or "7" and then moved to the "8". The
mark on the opposite side (13) (Fig. 2) applies for left hand threads. Approach
this setting number by turning to the left. If die sets were delivered without a
fine setting table, the setting number must be defined by the user himself with
a calliper gauge, a thread gauge muff or a sample thread. In any case the
achieved thread size must be remeasured after every setting.
4.3. Setting the length stop
The desired thread length is set at the length stop (14) (Fig. 4). To do this,
release the clamping lever (15) and set the length according to the scale (16)
(Fig. 4). Move the gear unit with the start cutting lever (17) to the left if neces-
sary. On a tapered pipe thread the standard thread length is achieved auto-
matically when the length stop is set to the desired thread size according to
the scale (16). The zero mark on the length stop must be set to the respective
thread size for this.
Long thread see 4.6.
4.4. Selecting the speed
REMS Unimat 75 has 2 speeds. For smaller thread diameters (up to approx.
45 mm) the speed 70 rpm is selected by pressing button II (18) (Fig. 4). For
larger thread diameters (from approx. 45 mm) the speed 35 rpm is selected by
pressing button I (19). Harder material or very coarse threads may require
earlier switchover to the speed 35 rpm (button I (19)).
REMS Unimat 77 has 4 speeds. In addition to the electric speed selection by
buttons I (19) and II (18) 2 other speeds are set by pushing or pulling the gear
shift lever (20):
8 rpm: gear shift lever pushed
+ button I difficult to cut materials 3 to 4"
16 rpm: gear shift lever pushed
+ button II normally cuttable materials 3 to 4"
difficult to cut materials 1¼ – 2½"
25 rpm: gear shift lever pulled
+ button I normally cuttable materials 1¼ – 2½"
difficult to cut materials up to 1"
50 rpm: gear shift lever pulled
+ button II normally cuttable materials up to 1"
4.5. Clamping the material
Close the holders with the closing lever (1) (Fig. 2), move the die head to the
right end position by turning the start cutting lever (17) (Fig. 4), set the thread
length (see 4.2. and 4.3.).
Mechanical vice:
Insert the material carefully until it is touching the chase dies. The material is
clamped self-centring with the clamping lever (23) (Fig. 4).
eng