HGDT_EN.PDF - 第11页

2017/04 – Subject to c hange 11 è Internet: www .festo.c om/catalogue/... He avy-duty three-point grippers HG D T T echnical data Spring force F S as a function of size, gripper jaw strok e l and gripper length x, per gr…

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Subject to change – 2017/04
10
è Internet: www.festo.com/catalogue/...
Heavy-duty three-point grippers HGDT
Technical data
High force – HGDT-…-F
Gripping force F
Grip
per gripper jaw as a function of operating pressure and lever arm x
The gripping forces as a function of
operating pressure and lever arm can
be determined from the following
graphs.
Internal gripping (opening)
HGDT-25-A-F HGDT-35-A-F
HGDT-40-A-F HGDT-50-A-F
HGDT-63-A-F
3 bar
6 bar
8 bar
2017/04 – Subject to change
11
è Internet: www.festo.com/catalogue/...
Heavy-duty three-point grippers HGDT
Technical data
Spring force F
S
as a function of size, gripper jaw stroke l and gripper length x, per gripper finger
Gripping force retention for HGDT-…-G…
The spring forces F
S
as a function of
the gripper jaw stroke can be deter
mined from the following graph.
Standard – HGDT-… High force – HGDT-…-F-…
HGDT-25-A-G…
HGDT-35-A-G…
HGDT-40-A-G…
HGDT-50-A-G…
HGDT-63-A-G…
HGDT-25-A-F-G…
HGDT-35-A-F-G…
HGDT-40-A-F-G…
HGDT-50-A-F-G…
HGDT-63-A-F-G…
The lever arm x [mm] must be taken
into consideration when determining
the actual spring force F
Stotal
.
The formulae for calculating the
spring force are provided in the table
below.
Size F
Stotal,
per gripper finger
Standard – HGDT-… High force – HGDT-…-F
25 –0.3* x+0.85* F
S
–2.24* x+0.64* F
S
35 –0.5* x+0.75* F
S
–0.97* x+0.7* F
S
40 –0.5* x+0.8* F
S
–1.45* x+0.66* F
S
50 –0.6* x+0.7* F
S
–0.97* x+0.51* F
S
63 –0.6* x+0.75* F
S
–2.35* x+0.72* F
S
Determining the actual gripping forces F
Gr
for HGDT-...-A-G1 and HGDT-...-A-G2 as a function of the application, per gripper finger
The three-point grippers with
integrated spring type HGDT-...-G1
(opening gripping force retention) and
HGDT-...-G2 (closing gripping force
retention) can be used as:
– single-acting grippers
– grippers with supplementary
gripping force and
– grippers with gripping force
retention depending on the
requirements.
In order to calculate the available
gripping forces F
Gr
(per gripper finger),
the gripping force (F
Grip
) and spring
force (F
Stotal
) must be combined
accordingly.
Application forces per gripper finger
Single-acting Supplementary gripping force Gripping force retention
Gripping with spring force:
F
Gr
= F
Stotal
Gripping with pressure force:
F
Gr
= F
Grip
– F
Stotal
Gripping with pressure and spring
force:
F
Gr
= F
Grip
+ F
Stotal
Gripping with spring force:
F
Gr
= F
Stotal
Subject to change – 2017/04
12
è Internet: www.festo.com/catalogue/...
Heavy-duty three-point grippers HGDT
Technical data
Dimensions Download CAD data è www.festo.com
1 Supply port, opening
2 Supply port, closing
3 Alternative air connection
(supplied sealed)
4 Sealing air connection
(supplied sealed)
5 Lubrication nipple
(supplied sealed)
6 Slot for proximity sensor
7 Centring disc
View A
Size B1 B2 B3 B4 B5 B6 B7 D1 D2
[mm] 0.5
with HGDT-…
0.5
with HGDT-…F
0.5 0.02 0.02
–0.05
–0.1
0.1
0.1
HGDT-25-A
22 25 23.5 9.5 19 6 3 6 48 38
HGDT-25-A-G…
HGDT-35-A
27 31 29 11 22 8 4 6.5 58 44
HGDT-35-A-G…
HGDT-40-A
35 41 38 14 28 12 5 10 74 56
HGDT-40-A-G…
HGDT-50-A
43.5 51.5 47.5 17.5 35 15 6 12 93 70
HGDT-50-A-G…
HGDT-63-A
54 64 59 22.5 45 18 10 14 116 90
HGDT-63-A-G…