Method For Regulating the Drive of a Shearing or Heading Machine

Abstract

In a method for controlling the drive of a shearing or heading machine for cutting a round, as a function of manipulated variables such as the movement speed of the cantilever arm, the position of the cutting tools and/or the power consumption of the drive motors and the pressure in hydraulic actuating cylinders, a minimum and a maximum target value are determined for the movement speed of the cantilever arm, and at least two factors each having values of between 0 and 1 are calculated for the manipulated variables as a function of measurement values, the measurement values at least comprising cutting tool position data compared to set data corresponding with a set profile, motor load measurement data and cantilever arm movement speed measurement data, and the movement speed of the cantilever arm is controlled as a function of the product of the set speed and the respectively calculated factors.

1 - 4 . (canceled) 
   
   
       5 . A method for controlling the drive of a shearing or heading machine for cutting a round as a function of manipulated variables, comprising the steps of:
 determining a minimum target value and a maximum target value for movement speed of a cantilever arm of the machine;   calculating at least two factors, each of said factors having values of between 0 and 1, for manipulated variables as a function of measurement values,
 wherein said manipulated variables are one or more of movement speed of the cantilever arm, position of cutting tools of the machine, power consumption of drive motors of the machine, and pressure in hydraulic actuating cylinders of the machine, and 
 wherein said measurement values are one or more of cutting tool position data compared to set data corresponding with a set profile, motor load measurement data, cantilever arm movement speed measurement data, cantilever arm pivot speed measurement data, mining tools rotational speed measurement data, and distance of position coordinates from target coordinates for the profile to be mined; and 
   controlling the movement speed of the cantilever arm as a function of a product of a set speed and the respectively calculated factors.   
   
   
       6 . A method according to  claim 5 , wherein each of said factors takes into account a separate measurement value for the manipulated variables. 
   
   
       7 . A method according to  claim 5 , wherein
 measurement values for one or more of changes in motor load, changes in pivot speed, and changes in rotational speed, are determined over time, and wherein   said measurement values for said one or more changes in motor load, changes in pivot speed, and changes in rotational speed determined over time are fed to a freely programmable switch mechanism, and to a drive control of the machine, as separate manipulated variables.   
   
   
       8 . A method according to  claim 6 , wherein
 measurement values for one or more of changes in motor load, changes in pivot speed, and changes in rotational speed, are determined over time, and wherein   said measurement values for said one or more changes in motor load, changes in pivot speed, and changes in rotational speed determined over time are fed to a freely programmable switch mechanism, and to a drive control of the machine, as separate manipulated variables.   
   
   
       9 . A method according to  claim 7 , further comprising the steps of:
 feeding at least one delay time to the freely programmable switch mechanism as a manipulated variable, and   upon detection of a blockage, keeping a starting speed of the movement of the cantilever arm at or near the minimum target value for movement speed during said delay time.   
   
   
       10 . A method according to  claim 8 , further comprising the steps of:
 feeding at least one delay time to the freely programmable switch mechanism as a manipulated variable, and   upon detection of a blockage, keeping a starting speed of the movement of the cantilever arm at or near the minimum target value for movement speed during said delay time.