Benefits of hydraulic clamping
Compared to manual clamping, using hydraulic clamping in the system ensures a consistent clamping force on the workpiece, makes clamping process faster and enables automated or robotic loading of workpieces.
Compared to the other hydraulic systems on the market, the OK-VISE hydraulic clamping module:
- is based on the world-renowned wedge clamp
- has a wedge design that hinders compression of hydraulic oil and prevents vibration
- creates clamping force with a pull stroke
- has a return stroke performed by a spring or hydraulics
- uses a HA-Series actuator designed for 350 bar pressure, hence a compact size
Some basic components
The principle
The operation principle of hydraulically operated OK-VISE fixtures is the same than in electical clamping : pulling a bolt down, which pulls the wedge toward fixure base, pushing the jaws against workpieces.
Hydraulic pressure (p) is first converted to the downwards force and by the use of the clamping force of the wedge clamp (F) is applied in two directions. Just like in manual clamping, a stopper is needed on both sides of the clamp.
The simplest way of creating a hydraulic fixture is to use a a single acting hydraulic actuator. Please note that in the double acting hydraulic actuator, pushing force is stronger than the pulling force.
Most typical applications
Multi-Rail RM Units + Hydraulics
Continuous hydraulic connection with horizontal machining center.
Grid System + Hydraulics
Continuous hydraulic connection with vertical machining center.
Blank System + Hydraulics
The hydraulic connection is disconnected after loading. Used in the FMS systems.
Retro-fit option
Manual fixtures can be designed in a way that adding automation later is extremely simple, plug-in operation
This is the easiest way to enter the world of an automated clamping!
Installation
Fixturing assembly can be supplied together with the hydraulic actuators. OK-VISE partners from the global distribution network offer assistance with the hydraulic installations. Sample connection diagrams are available from support@ok-vise.com.
OK-VISE CLAMPS
OK-VISE low-profile clamps are worldwide known for their quality and accuracy. D-series and B-series clamps are particularly recommended for use with the OK-VISE hydraulic actuators.
