Actuators accommodate high vertical forces
A
Micromech product story
Edited by the Engineeringtalk editorial team
Mar 30, 2007
Micromech's HZR actuators have a light, compact and self-supporting construction made from a closed and therefore torsion-resistant aluminium profile.
Micromech's HZR actuators are available in three sizes: 50 x 50, 80 x 80 and 100 x 100mm, all with a stroke length of 2m.
They have a light, compact and self-supporting construction made from a closed and therefore torsion-resistant aluminium profile that can withstand large side forces by means of a deflection-resistant aluminium profile.
Due to the generously dimensioned cast housing means this sturdy Z-axis actuator can accommodate high vertical forces up to 1500N.
Speeds of up to 5m/s are achievable, as is acceleration os 10m/s2 and traction forces of up to 2.2kN lifting of payloads of 150kg.
On each of the three sides of the profile there are grooves for mounting tripping plates, limit stops and additional mechanical components.
Cables can be fed downwards through the large opening in the centre of the profile and at the lower end of the profile there are four screw threads for suspending loads.
The drive can be mounted on either side of the housing.
The stable cast housing with a closed frame structure can withstand very large side forces and bending moments resulting from horizontal acceleration.
An integrated cast flange ensures a stable connection to other mechanical components, such as a dual actuator system.
High speeds and repeatability are guaranteed by a wide, slip-free timing belt drive, reinforced by steel tension cords.
A wide area clamp ensures a secure connection between the toothed timing belt and the carriage profile.
The HZR uses the latest type of plastic sheathed rollers mounted on roller bearings to ensure low-friction running.
They can be adjusted by means of eccentric bolts so that the profile is backlash-free.
Very high side forces and moments can be applied due to the large roller distances in the stable housing.
The backlash-free guidance is achieved by means of adjustable, plastic sheathed rollers mounted on roller bearings which also provide maintenance-free operation and low noise.
The tensioning station is used to set the required pretension of the timing belt, it is easily accessible and therefore simple to mount and maintain.
The mechanical limit stops consist of stable, closed aluminium brackets each with two damping rubber buffers which can be moved freely along the profile grooves and may be mounted on any side of the profile (except the toothed belt side).
Mechanical or inductive limit switches can optionally be mounted on the covers of the upper and lower sides of the housing.
A cylindrical limit switch (home sensor) may be optionally mounted on the right or on the left side of the housing.
The tripping plates are completely integrated into the profile grooves and can be continuously varied in position.
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