Spring grinding

The differences in the unground spring lengths, low performances during the dry grinding process for medium and large wire diameters and limited series which often are not a justification for high equipping costs, are the main reasons to prefer the wet grinding method.
The OMD production range includes two series:
- Series H (models: H50, H80, H100, H150), traditional pendulum grinding machines with one grinding wheel for grinding one spring end at a time and for big production volumes,
- Series HA/2 (models: HA80/2; HA100/2) machines with two grinding wheels and horizontal axe, with automatic progressive cycle for simultaneously grinding of both spring ends.
These machineries are made for working in aggressive environments, therefore they are realized with technically reliable solutions, accuracy and selected materials.
The pendulum grinding machines have an horizontal spindle for grinding on the front surface of the grinding wheel with automatic feed and automatic compensation of the grinding wheel.
The machines offer following working methods:
- spindle group feed with constant grinding pressure
- spindle group feed with variable pressure
- grinding with cooling breaks.
The series HA/2 consist of a double, horizontal mandrel and of a loading plate for the simultaneously grinding of both spring ends. The machines are equipped with automatic control and positioning system, automatic grinding wheel compensation, automatic dressing for grinding wheels, electronic adjustment of the loading plate rotation and system for recycling cooling water.
The working methods of these machines are:
- automatic grinding system with variable feed.
- automatic grinding system with constant pressure.
- automatic grinding system with constant feed.
- automatic grinding system with cooling breaks.
The machines are PLC controlled and dispose of a simple and functional operator interface for programming and diagnostic.
The purpose is offering a leading machine, not only for the applied mechanical solutions, but also for the software supporting the management of the grinding process.
Finally, the possibility to use inverter enables programming the rotation speed of the grinding wheel according to the used abrasive material and/or the processed material.
As a result these grinding machines represent a synthesis of a long experience in this sector, reliability, material quality and a constant, technological improvement.

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