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3.
Gene 「 al
因J
The machine should be ere
G 也 e
d as far as possible on a level
floor in a
well-ligh 也 ed
room.
The 也 able
model should be placed
on a wall-bracke
也 or
workbench.
Maintenance is mainly confine
d 也o ke 色 p
ing the machine clean.
Any fly.ing dust depo
s 土 ted
during grinding
mus 也 be
carefully and
con 乞 inuously
removed.
Carry out the lubrication in accordance with the lubrication
char 也.
When the machine has been erected and before
i 也 is pu 也
in 也o
service,
i 乞 must
be thoroughly lubric
a也 e
d.
The me
t二hon
of operation i
s
也hat
with the saw blade stationary,
也he
left-hand side of
也he
grinding wheel sharpens the too
t二h
face
(cut 札吨 angle)
up to the gullet as a re
sul 也 of
the wheel1s
down 『
ward movement.
Then, with the feed fo
r 也 he
blade
opera 也 ing,
the
tooth gullet and
nex 乞 the
back edge o.re ground as a result of the
simul 也 aneous
return o
f 乞he
grinding wheel.
The thickness of the wheel must be les
s
也 han
the tooth spacing.
Wi 毛h
involute teeth, some 0.4: to 0.5 times as thick as the to
o 也h
pitch to be ground
a时， with
angle teeth, about
1/3 也 0
1/2.
The grinding wheel contour, or
i 乞 s
cross-section shape, must
be of "D" shape
(semi甲 circle)
for involute teeth of "F" shape (
bevelling with rounding) for
a吨 le tee 杜1
and for grinding the
la 毛 eral
bevelling.
The choice of the grinding wheel is mainly dependent
on 也 he
saw
blade material.
Experience shows that the grain is between 60 and
80 and the hardness
be 也ween
K and N.
Whee ls with
vi 也 ri-fied
bond-
ing are chiefly used.
Rubber or bakelite bonded wheels are only
used for·fine and especially small
pitches.
工 tis
important in
all cases to use wellbalanced quality
grindi 丑 g
wheels.
5
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