q
Since the proper peripheral speed range of vitrified stemmed grindstone is
600
〜
1,800m/min(1,970
〜
5,900ft/min), it is recommendable to use within
the proper speed range. (Do not use beyond the peripheral speed of
2,000m/min(6,560ft/min) since it is dangerous)
w
The overhanging mode of stemmed
grindstone should be within 13
A
,
If the overhanging mode must be
made beyound 13
A
, use it by slowing
down the motor speed. (Fig. 22)
e
Do not use the poor quality of grindstone with run-out, hurts, cracks, etc.
r
It is recommendable to use the grindstone after dressing is made.
t
In case of grinding, the depth of cutting per cycle is max. of 0.01
A
.
After one cycle of grinding, repeat reciprocating motion a few times and start
next cycle of grinding.
y
In case of drilling, end milling, etc., follow the manufacturers' recommended
speed.
u
Clean the shank of tool before mounting. If the dirts or foreign materials get
into the collet chuck, they will create the cause of run-out.
i
Do not give a storong shock and do not disassemble uselessly.
◆
INSTALLING OF SPINDLE
CAUTIONS FOR CUTTING TOOLS IN USE
To install the spindle on a holder, the installation method as shown in Fig.19 is recommended. If it is not
possible, install it as shown in Fig.20. Do not use mounting screws pushing directly on the spindle as shown
in Fig.21, because it could damage the housing and may result in failure of rotation, overheating, etc.
13
(0.51")
Fig. 22
P. 8
φD
φD
Fastening Screw
Slit
Fastening Screw
Slit of Bushing
Bushing with Slit
Fastening Screw
φD
Fig. 19
Fig. 20
Fig. 21
◆
REPLACING CUTTING TOOL
◆
REPLACING COLLET CHUCK
Follow the procedures below to replace the collet chuck
q
Loosen the collet cap with cutting tool and remove according to the “Replacing Cutting Tool” steps
above. (Fig. 17)
w
To remove the collet chuck from the collet cap, hold the collet cap in one hand and incline the collet
chuck toward the spanner slit of the collet cap. (Fig. 18)
e
To mount a new collet chuck, incline the collet chuck toward the spanner slit of the collet cap and insert. (Fig. 18)
Standard collet chuck is
φ
3.0
A
.
Optional collet chucks are available from
φ
0.5
A
〜φ
6.0
A
in every
φ
0.1
A
and
φ
2.35
A
(
φ
3/32"),
φ
3.175
A
(
φ
1/8"), and
φ
6.35
A
(
φ
1/4").
Optional Collet Chuck No. CHK-
□□
(Fill I.D. in
□□
)
CAUTION :
¡
If the collet cap is tightened too much without mounting a tool, the collet chuck is
squeezed up too much and apart from the collet cap and becomes difficult to
remove from the spindle even if the collet cap is loosened.
¡
Do not remove the collet chuck often other than cleaning because it may hurt the
collet chuck.
Tighten
Loosen
CuttingTool
Spindle
Collet Cap
Fig. 16
Fig. 17
Fig. 18
q
Set the spindle with the provided 12
A
spanner
wrench.
w
Place the provided 14
A
spanner wrench on the
collet cap, turn it to counter-clockwise to loosen
the collet chuck and pull out the cutting tool.
(Collet chuck will not open with a release of one
time. When the collet cap is made about a full
turn, the collet chuck becomes tight again. Collet
chuck will open when the collet cap is turned to
counter-clockwise further.)
e
Insert another cutting tool and turn the collet
chuck clockwise to fasten the cutting tool.
P. 7
＊
Cutting Tool
Spindle
Loosen
Collet Cap
Spanner slit
Incline
Collet Cap
Collet Chuck
ASTRO-E250̲K0155E.r1̲e̲のコピー 05.6.20 9:24 PM ページ 9