hydroerosive grinding HE-grinding machine & loader control orifice DI


The fully automated HE-grinding machine & loader control orifice DI is used for flow calibration of fuel injection components. Based on a round table concept the workpieces pass through the individual processes. During the HE-grinding process an abrasive fluid is pumped under high pressure through the workpiece holes to round them. The flow increases, depending on the application, from 5% to 20%.The grinding process is stopped as soon as the correlated target flow has been reached.
In front of the round table there is a robot loader with drawers to insert the workpieces on pallets into the machine. After turning the workpiece with a turn unit, the robot moves the workpieces in front of the camera to read the Dot Code on the part. A second camera checks the orientation of the part to put the workpiece orientated into the round table nest.
The round table includes three grinding, three flushing and three measuring nests to work on three different workpiece holes in one turn on the table.
After finished processing in the turntable the robot moves the workpieces back to the outtake pallets in the drawers.


  • Quick changeable workpiece carriers
  • Individually activated process steps
  • Link of the result files with the workpiece DMC
  • Modular design of the stations
  • Place saving concept of the rotary table
  • Grinding with different media (3 separate grinding stations)
  • Grinding and measuring with backpressure is possible.
  • Easy data handling access via a local database (target values, results, etc.)
  • Illustrative visualization of running processes and outcomes
  • Control panel with touch screen display and convenient user interface
  • 6 x master piece tray
  • Part input via drawers
  • Grinding pumps driven by servo motors

Technical data  

  • Cycle time grinding process: depending on the degree of rounding
  • Grinding pre pressure: max. 160 bar
  • Grinding back pressure: max. 80 bar
  • Washing pressure: max. 10 bar
  • Measuring pre pressure: max. 160 bar
  • Measuring back pressure: max. 80 bar