Method for Producing a Housing of a Rotary Screw Compressor

Abstract

A method produces a housing of a rotary screw compressor, the housing having at least one housing body and at least one housing cover. The method includes the following steps: bearing seats for at least one screw rotor of the rotary screw compressor are provided in the housing body and in the housing cover; at least one screw borehole for the at least one screw rotor of the rotary screw compressor is provided in the housing body; the housing body and the housing cover are temporarily assembled using at least one alignment tool for ensuring the alignment of the screw rotor central axis with the central axes of the bearing seats and the screw borehole; and at least one bolt insertion opening is provided in both the housing body and the housing cover by at least one common production process.

1 - 15 . (canceled) 
     
     
         16 . A method for producing a housing of a screw compressor, wherein the housing has at least one housing body and at least one housing cover, the method comprising the steps of:
 forming bearing seats for at least one screw rotor of the screw compressor in the housing body and in the housing cover;   forming at least one screw bore for the at least one screw rotor of the screw compressor in the housing body;   provisionally assembling the housing body and the housing cover using at least one alignment tool in order to ensure alignment of a screw rotor central axis with central axes of the bearing seats and of the screw bore; and   forming at least one bolt insertion opening into both the housing body and the housing cover by way of at least one joint manufacturing process.   
     
     
         17 . The method as claimed in  claim 16 , wherein
 the forming of the bearing seats for the at least one screw rotor of the screw compressor in the housing body and in the housing cover is performed in separate manufacturing processes.   
     
     
         18 . The method as claimed in  claim 16 , wherein
 in conjunction with the provisional assembly of the housing body and the housing cover, the housing body and the housing cover are fastened to one another by at least one screw connection.   
     
     
         19 . The method as claimed in  claim 18 , wherein
 in conjunction with the provisional assembly of the housing body and the housing cover, the alignment tool is pushed in from outside through the bearing seat for the screw rotor in the housing cover and through the screw bore and is thus inserted into the bearing seats in the housing body and in the housing cover.   
     
     
         20 . The method as claimed in  claim 19 , wherein
 the screw connection is tightened only after the insertion of the alignment tool into the bearing seats in the housing body and in the housing cover, such that, during the pushing-in and insertion of the alignment tool, the bearing seats in the housing cover and in the housing body are alignable relative to one another.   
     
     
         21 . The method as claimed in  claim 16 , wherein
 the alignment tool is of cylindrical and stepped form such that it has at least one first bearing insertion portion with a first diameter and at least one second bearing insertion portion with a second diameter.   
     
     
         22 . The method as claimed in  claim 21 , wherein
 after inserting the alignment tool, the first bearing insertion portion thereof is inserted in the bearing seat in the housing body and the second bearing insertion portion is inserted in the bearing seat in the housing cover.   
     
     
         23 . The method as claimed in  claim 16 , wherein
 after the provisional assembly, a manufacturing direction during the joint manufacturing process of the at least one bolt insertion opening runs from an outer side of the housing cover axially inwardly in the direction of the open end, facing toward the housing cover, of the housing body.   
     
     
         24 . The method as claimed in  claim 23 , wherein
 the joint manufacturing process of the at least one bolt insertion opening is performed by at least one cutting manufacturing process.   
     
     
         25 . The method as claimed in  claim 24 , wherein
 the cutting manufacturing process is drilling.   
     
     
         26 . The method as claimed in  claim 24 , wherein
 the cutting manufacturing process is performed by at least one cutting manufacturing tool, wherein the manufacturing tool is rotated and is of rotationally symmetrical form.   
     
     
         27 . The method as claimed in  claim 16 , wherein
 after the provisional assembly, the housing body and the housing cover are separated from one another for at least one further machining or assembly step.   
     
     
         28 . The method as claimed in  claim 16 , wherein
 during the assembly of the housing body and the housing cover, a fit bolt is inserted into the at least one bolt insertion opening, which fit bolt is seated both partially in the housing body and partially in the housing cover.   
     
     
         29 . The method as claimed in  claim 16 , wherein
 at least two bolt insertion openings are provided both in the housing cover and in the housing body.   
     
     
         30 . A housing of a screw compressor manufactured by the method according to  claim 16 . 
     
     
         31 . A screw compressor having at least one housing manufactured by the method according to  claim 16 .