Kitagawa HW-08, Инструкция по эксплуатации

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・Keep the height of the top jaw within the range of the gripping force limit table. (Refer to Fig.8)
・If a top jaw is taller than the standard soft jaw, use it at the input force (piston thrust force, draw pipe drawing
force) specified in the gripping force limit table. If it is used without lowering the input, the chuck will break and
this is dangerous as the chuck and work will fly out.
Fig.8
・If the chuck is used with either one of opposing jaws idled, the input must be 1/2. Unless the input is reduced, the
chuck is broken, causing the workpiece to fly out.
・If the chuck is used with one pair of two pairs idled, the workpiece must be gripped with No.1 and No.3 jaws. If it
is gripped with No.2 and No.4 jaws, the specified gripping force is not obtained, causing the workpiece to fly out.
Analysis of the gripping force, input force and rotation speed using Fig. 8 is carried out as shown below.
・For example, in the case of HW-08 standard soft jaw (mass moment 47.5kg・mm), it cannot exceed 3000min
-1
(rpm), and the gripping force loss due to the centrifugal force at this rotation speed is 18.6kN (approx. 1897kgf).
The required static gripping force for the dynamic gripping force (gripping force loss by static gripping force -
centrifugal force) to become 1/3 of the static gripping force is 28kN, and the required input to obtain this gripping
force is 16.5kN. However, it is necessary to use at the gripping part center height H=21 mm or less.
・If the gripping part center height H is high, it is necessary to lower the static gripping force.
・If the top jaw mass moment is large, the rotation speed needs to be lowered.
・If the rotation speed is high, the gripping force loss due to the centrifugal force becomes large. The centrifugal
force is proportional to the square of the rotation speed.
The required static gripping force and input force required at the rotation speed in use are predicted from Fig.8,
however, it contains a number of hypothetical conditions. Therefore, it is necessary to only use these as reference, and
the processing conditions must be determined after trial cutting without fail.
DANGER
DANGER
NOTICE
GRIPPING FORCE LOSS PER A PAIR OF JAWS : kN
GRIPPING FORCE LOSS PER A PAIR OF JAWS : kN
GRIPPING FORCE LOSS PER A PAIR OF JAW
S
: kN
GRIPPING FORCE LOSS PER A PAIR OF JAW
S
: kN
STATIC GRIPPING FORCE PER A PAIR OF JAWS : kN
STATIC GRIPPING FORCE PER A PAIR OF JAWS : kN
STATIC GRIPPING FORCE PER A PAIR OF JAW
S
: kN
STATIC GRIPPING FORCE PER A PAIR OF JAW
S
: kN
20
10 20 40 0
16.5kN
14kN
12kN
8kN
6kN
10kN
21
80
39
10
30 28
20
10 0
23kN
20kN
18kN
14kN
12kN
16kN
24
10kN
8kN
6kN
30
40
10
45
42
20 40 60 80
85
GRIPPING CENTER HEIGHT H: mm
GRIPPING CENTER HEIGHT H: mm
GRIPPING CENTER HEIGHT H: mm
INPUT FORCE
PER A PLUNGER
GRIPPING
FORCE LIMIT
INPUT FORCE
PER A PLUNGER
GRIPPING
FORCE LIMIT
STD.SOFT JAW
20
0
28kN
24kN
20kN
12kN
16kN
28
40
60
20 40 60 80 100
53
54
26kN
22kN
18kN
14kN
STD.SOFT JAW
GRIPPING
FORCE LIMIT
INPUT FORCE
PER A PLUNGER
HW-10
ｍ×ｒ (kg・mm)
TOP JAW MASS MOMENT PER A JAW
HW-15
ｍ×ｒ (kg・mm)
TOP JAW MASS MOMENT PER A JAW
HW-12
ｍ×ｒ (kg・mm)
TOP JAW MASS MOMENT PER A JAW
20
40
0
23kN
20kN
18kN
14kN
12kN
16kN
24
10kN
8kN
6kN
10 20 40 60 80
45
30
10
42
2000
min
-1
1800
min
-1
1400
min
-1
1000min
-1
1600
min
-1
1200min
-1
800min
-1
1500
min
-1
1400
min
-1
1200
min
-1
1000
min
-1
1300
min
-1
1100
min
-1
800min
-1
900min
-1
1200
min
-1
1000min
-1
1100
min
-1
800min
-1
900min
-1
700min
-1
600min
-1
500min
-1
STD.SOFT JAW
STD.SOFT JAW
INPUT FORCE
PER A PLUNGER
STD.SOFT JAW
GRIPPING
FORCE LIMIT
STD.SOFT JAW
0 100 200 300
10
20
28
0 100 200 300
10
20
28
0 150 300 450 600 750
10
20
30
36
18.6
10
0
50 100 150
3000min
-1
2600
min
-1
2200
min
-1
1800min
-1
1400min
-1
1000min
-1
STD.SOFT JAW
TOP JAW MASS MOMENT PER A JAW
ｍ×ｒ (kg・mm)
HW-08
GRIPPING CENTER HEIGHT H: mm
STD.SOFT JAW