====== Define a grooved bush extruder ======
A grooved bush can be defined via the //Grooved bush (Geometry)// tab in the cylinder input dialog. \\
If a grooved bush does not yet exist, it can be created using the //Create grooved bush// button. A grooved bush that has already been created can be deleted again using the //Remove grooved bush// button. 

If the grooved bushing is beeing calculated, it determines the throughput (s. [[en:berechnungen:nutbuchsenberechnung|grooved bush calculation]])

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If the process contains a grooved bush, 3 tabs appear in the dialog for cylinder input. The following values must be entered in the //Grooved bush (geometry)// tab:
  *     Number of grooves N_N
  *     Grooves length
  *     Groove depth h_N
  *     Groove width b_N
  *     Typeof groove (axial, helical grooves)
  *     For helical grooves, the groove angle phi_N

If it is a cooled grooved bush, the checkbox //with cooling channels// must be selected. In this case, the values in the //Grooved bush (cooling channel)// and //Grooved bush (cooling medium)// tabs must also be defined. \\
Water and oil (Regoplas RO 150) can be specified as predefined media or a user-defined medium as the cooling medium. 
{{ :eingabe_der_zylinderdaten:rex171_zyl_en_003.png?nolink |}}
{{ :eingabe_der_zylinderdaten:rex171_zyl_en_004.png?nolink |}}
{{ :eingabe_der_zylinderdaten:rex171_zyl_en_005.png?nolink |}}

===Further topics===
  * [[en:eingabe_der_zylinderdaten:eingabe_der_zylinderdaten|]]
  * [[en:eingabe_der_zylinderdaten:eingabe_eines_nutbuchsenextruders|]]