IMET BS 300/60 SHI, Инструкция по эксплуатации

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ORIGINÁLNÍ NÁVOD K POUŽITÍ
BS 300/60 SHI
13
10 -
BAND CHOICE
In this paragraph we recommend the type of cutting band in accordance with the material to use . To get the best
performance from this machine it is necessary to undestand the right use of the used tools and what you have not to
do with them.
The band you have to use must have the following sizes ( in mm. ) :
maximum lenght = 2770
minimum lenght = 2750
total height = 27
thickness = 0,90
Blades with a different thickness can be utilized by changing appropriately the width of the blade guides
(see the paragraph ADJUSTMENTS ) and the band tension.
The blade material is also important; generally the bi-metal blade is used, with different levels of
HARDNESS, named M42 or SVGLB (for general purpose: tube, solids and profiles, available in
all pitches), M51 or SHL (preferred for big solids of hardened steel, INOX material too,
available in 3/4 and 2/3 pitch).
The teeth hardness increases - and the fragility too - by going from the material M2 to the M51.
To make a good cut it’s crucial to choose the right pitch (t) or NUMBER OF TEETH PER INCH
(z). The blade must generally have the toothing as follows:
- small teeth when cutting thin materials, tubular and profiles.
- big teeth when cutting solids or pieces with a long cutting section (for example the central part of a U
profile), or in case of softer materials such as aluminium, copper, soft bronze.
By choosing the suited pitch you can avoid a lot of mistakes and you can get a good blade penetration
and the necessary room for the chips. If you cut more pieces at the same time, you must
consider them as a single piece (that is, you have to consider the total size). The enclosed
chart gives the necessary information for a correct choice. It can however be updated or modified
by the user according to his personal experiences.
Even if there are blades with constant pitch, most bandsaws allow the use of blades with variable pitch,
that is, groups of teeth having different pitch one from each other, which reduce vibrations and noise
and improve the quality of the cut and the cutting performance.
SUGGESTED PITCH SOLIDS
Outer
Diameter
(mm)
BIG
PROFILES
Wall
Thickness
(mm)
PROFILES
Wall
Thickness
(mm)
BUNDLE
Lenght
to Cut
(mm)
REF.
VARIABLE CONSTANT
14 M42 - - 1,5 max -
10/14 M42
10 M42 - - 1 a 2 -
8/12 M42
8 M42 20 max - 2 a 4 -
6/10 M42
6 M42 40 max - 4 a 8 -
5/8 or 5/7 M42
5 M42 30 a 80 6 a 12 - 50 a 100
4/6 M42
4 M42 40 a 90 10 a 20 - 70 a 120
3 / 4 M42 o M51
3 M42 o M51 70 a 150 15 a 25 - 100 a 200
2 / 3 M42 o M51
2 M42 o M51 120 a 230 Oltre 25 120 a 300
These cutting recommendations refer to 100 mm. diameter solid bars and a standard saw of
our product range. For 2- speed machines we suggest the motor speed to use; when it’s into a
bracket ( ) it is recommended to use a machine with ESC, which grants a continuous blade speed
variation.
If the size of the material decreases, the indicated figures can be increased , considering also
the machine model and its performance and/or some accessories, for example the ESC (Electronic
Speed Control):