Method and device for controlling a rock drill rig

Device for controlling a drill rig which includes a carrier vehicle with at least one feed-beam, whereon a drilling machine is movable to-and-fro, wherein a control unit is arranged for setting parameters for the rig, and wherein the device includes memory means for storing a plurality of operating modes, whereby each operating mode includes specified operating settings for different operating parameters of the rig,

• wherein each operating mode is selectable such that operation of the rig is related to a particular type of rock, in which drilling is to be performed,
• wherein each operating mode includes operating settings that are adapted to the prevailing type of rock,
• wherein said device includes at least one input device for selecting rock condition, whereby one or more of the following parameters varies as a function of the rock condition:
• feed pressure, percussion pressure, damping pressure,
• wherein said device includes at least one input device for inputting data related to bit size, whereby one or more of the following parameters are arranged to vary as a function of bit size:
• flushing flow, rotation speed, feed pressure, percussion pressure, ratio feed force-rotation torque relation, starting point for initiating anti-jam function, and
• wherein said device includes at least one input device for inputting data related to rod size, whereby one or more of the following parameters are arranged to vary as a function of rod size:
• percussion pressure, feed motor pressure,
• wherein activation of one operating mode is arranged also to set the parameter values for, activate or de-activate different drilling control functions, being one or more from the following group:
• boost, hole flushing, pressure control of feed, flow control of feed, anti-jam function, damping control function, super rotation, feed speed control of percussion pressure.