7 Operation and regulation
HSD S.p.A. © - h0106k01a.fm120718
125
7.4.1
Checking and adjusting the HSK collet ejection position
1.
Bring the spindle to the
“Collet open (tool-holder cone ejected)”
condition, where the position
(B) (figure
2
) assumes the maximum value;
2.
as shown in figures
1
and
2
, check with a depth gauge that the ejector position (B) in relation
to the spindle nose assumes the
“B”
value indicated in table
1
;
if not, adjust the collet as follows.
The operation must be carried out by specialist personnel with adequate training, or
personnel authorised by HSD.
With the electrospindle in the
“Collet open (tool-holder cone ejected)”
condition (see page
140
),
follow the procedure.
3.
Unscrew the lockscrew from the screw dowel;
4.
Adjust the collet unit to the set position
“B”
indicated in table
1
;
5.
Spread a medium-strength thread-locking liquid (LOCTITE 243 or another equivalent product)
on the lockscrew thread.
6.
Tighten the lockscrew against the screw dowel. Observe the tightening values indicated in
table
3
, paragraph
9.4.4 “Tightening the lockscrew for the HSK collet”
. Leave to rest so the
thread-locking liquid can set (according to the manufacturer's instructions).
7.
Check the axial force exerted by the locking device on the tool holder (the use of the Power
check is recommended). If the force measured is less than 70% of the minimum value
indicated in paragraph
7.4 “Tool-holder locking and ejection device”
, proceed as follows:
• grease the collet again, as indicated in paragraph
8.1.7 “Lubricate the HSK collet”
, and
check the axial force on the tool-holder again;
• if the force is still less than 70%, change the collet and check again;
• if the force is still less than 70%, change the clamping device completely.
The dosage of the thread locking compound must be strictly observed. Excessive
quantities may unintentionally obstruct holes and/or adversely affect the operation.
Always use an adequate quantity of thread locking compound and also pressurised
air to make sure that the excess material has been removed.
If the collet must be adjusted, check the calibration and, if necessary, calibrate the sensors again. To
do this, refer to paragraph
9.3 “Replacing and adjusting the sensors”
.
Figure 1: ejector position
Figure 2: (A) ejector
(B) reference position
HSK form
B (mm)
A40, E40, F50
8.6
+0.1
/
0
A63, E63, F63
10.6
+0.1
/
0
Table 1: (B) values
A
B
Содержание ES779
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