Method Of Functioning (See Fig. A); Before Putting Into Operation - Fein RSG Ex 1500 A Manual Del Usuario

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8. Pneumatic pipe milling machines (type RDG (**)).
The maximum pressure for the pipe milling machine is 6 bar.
Only connect the pipe milling machine to the compressed-air sup-
ply when the ball valve is closed.

Method of functioning (see Fig. A).

The pipe milling machine cuts and machines pipe walls using chip-
removing cutting tools. It is clamped onto the outer surface of the
pipe using the clamping gear and runs around the pipe with a self-
actuating advancement. The tools used are metal circular saw blades
and profiling cutters with HSS steel or hard metal cutters, depen-
ding on the what the pipe is made of.
The setting for the cutting depth is made using the tool spindle hol-
der (16) that is pivot-mounted in the two side plates (3), and can be
adjusted by the threaded spindle (6).
The transport shaft (21) that causes the working advancement via
the transporting wheels, is driven by the tool spindle via 2 worm-
gear levels.
The feed motion can be switched on or off via the feed switching
lever (28).
A slipping coupling protects the advancement gear against overload.
The bearing of the tool spindle is of a particularly rigid design. The
main gear, lubricated by an oil-bath, for driving the tool spindle con-
sists of a planetary and worm-gear level.
The gear is dimensioned in such a way that no damage is caused if
the chain should occasionally come to a halt. All gear shafts run in
roller bearings.
The machine frame together with the axles has the task of guiding
the clamped-on pipe milling machine on the pipe, and transmitting
the forces for cutting and advancing. The alignment to the respec-
tive external diameter of the pipe is made by adjusting the running
axle (10). The clamping chains are composed of individual, identical
chain links that are joined together.
The number of the required chain links, i.e. the length of the clam-
ping chain, depends on the external diameter of the pipe.

Before putting into operation.

Preliminary work on the pipe to be machined.
Pipes that are cut in the warehouse must be supported underne-
ath such that the cutting tool does not wedge.
In the case of pipes that have been laid, a distance away from the
pit wall of at least 50 cm, measured from the outer side of the
pipe, must be given at any place over a length of 1 m.
The surface of the pipe must be free from any dirt or earth.
Remove any soft protective coating on the surface of the pipe.
The cutting tool must be selected according to the pipe material,
the required form of machining and the cooling lubricant.
Remove the welding seams in the area of the sprockets and
chains.
For further information, please contact your coolant/lubricant sup-
plier (also see compressed-air cooling-lubricant device
9 12 01 002 00 4).
(Article number of lubricating agent:
Lubricating agent BIOCUT 1L 3 21 32 039 00 0,
Lubricating agent BIOCUT 5L 3 21 32 040 00 0)
Preliminary work on the pipe milling machine
(see Fig. A).
Release clamping lever (11).
Raise the tool spindle holder (16) on the feed unit (7) using the
handwheel (in the carrying case).
Remove the fitting screws (9) and the refit the running axle (10) to
the current exterior pipe diameter in accordance with Table (4).
Mount/tighten the fitting screws (9) again.
Specification plate:
P D
[mm]
I 250 – 400
II 400 – 600
III 600 – 900
IV 900 – 1500
P: Position of the running axle
D: Diameter of the pipe
Drive out the clamping fixtures (1) for the clamping chains by tur-
ning the sprung chain tensioner such that after placing the pipe mil-
ling machine on, sufficient clamping/tensioning distance is available.
Assemble the clamping chains to fit the external diameter of the
pipe. Position the pipe milling machine on the pipe and secure it
with lifting gear in order to prevent slipping off or shifting.
Assemble guide chain with chain tensioner to match the exterior
pipe diameter. Affix the guide chain 10 mm clear aside of the clam-
ping chain, opposite of the cutting tool. The clearance between the
guide chain bolt and the clamping chain bolt is 10 mm. Check the
clearance three times around the circumference.
Clamping the pipe milling machine onto the pipe.
Mounting the link chains.
Place the link chains (that still have open ends) on both sides of the
pipe milling machine, over the pipe.
Raise the pipe milling machine and slide the chain links under the
sprockets (13), so that the chain links engage in the sprocket teeth
after lowering the pipe milling machine. Place the link chains with
their open ends over the chain wheels of the clamping axle (14) and
running axle (10). Finally close using the bolt (3 02 17 216 00 4)
and secure with the 2 securing rings (4 26 34 020 00 5).
Tensioning the link chains (see Fig. A).
Firstly, lightly snug the chain links against the pipe by turning the
two spring tubes (1). For exact alignment, push the pipe milling
machine backwards and forwards a few times along the circumfe-
rence of the pipe.
Tension the link chains by turning the sprung chain tensioners until
the pin (23, see Fig. A) juts into the elongated hole of the sprung
chain tensioner inside the groove punched in the circumference.
Watch the position of the pin during the cutting process. If the pipe
should prove to be out of round, either retension or loosen.
Remove all 4 handles prior to the cutting.
!
Danger of accidents!
Do not continue to turn the sprung chain tensioner beyond this point!
Assembling the cutting tools.
!
Risk of injury
- by switching ON unintentionallyn.
- Before assembly, remove the mains plug or the compressed-air hose.
- through objects being thrown off or falling down, such as wedges, tools,
the pipe milling machine, the workpiece (pipe),....
- through sharp cutting edges of the cutter
Before assembly, remove the mains plug or the compressed-air
hose.
Before mounting, clean the tool spindle and also the fitting area
and contact surfaces.
Mount the cutting tool.
Tighten the tool tensioning nut.
[inch]
9.6 – 15.7
15.7 – 23.6
23.6 – 35.3
35.3 – 58.9