EHMB
Festo EHMB 1008a English
21
2
Function and application
The EHMB rotation−stroke module combines two movements, rotation and stroke,
in one product. A toothed belt transfers the rotation of a motor to a hollow shaft.
The stroke of a pneumatic/electric cylinder is transferred via a connection bolt
aJ
to the drive flange
1
and the grooved shaft guide
4
of the EHMB.
The shafts run in ball bearings. The reference position of the rotation can be
detected with the aid of an inductive proximity sensor in the threaded hole
6
.
Theposition of the stroke is detected on the cylinder.
The EHMB rotation−stroke module is intended for turning and lifting work loads
(e.g.with grippers). The EHMB is not permitted for operating conditions in which
vegetable and water−soluble greases or oils can penetrate into the axis. Vegetable
greases or oils can reduce the capacity of the toothed belt.
Note
The EHMB is not fitted with a brake: When the input torque of the drive motors
is not applied, the rotation−stroke module can be moved freely. Generally
self−locking of the complete system can be achieved by the use of motors with a
spring−loaded holding brake or with high self−braking torque.
Note
Without stop nut
5
and linear drive, the shaft
4
can slip out of the seat of the
EHMB. Then a repair by Festo is required.
· If the linear drive is dismantled, make sure that the stop nut is not removed.
·
Use the related motors from Festo (
è
catalogue specification,
www.festo.com/catalogue).
You will then be operating mating devices, which are especially adapted to
each other.
When using other motors:
·
Observe the limit values for torques and speeds
è
chapter12Technical
data".
·
Observe the interface geometries (e.g. for the drive shaft)
è
catalogue
specifications under www.festo.com/catalogue
