Structural unit

Abstract

A structural unit, in particular a grinding wheel has a hole pattern for sucking away swarf from a machining surface. The hole pattern has at least three recesses which are arranged essentially along a first spiral line. The hole pattern also has at least three further recesses which are arranged essentially along a second spiral line which intersects the first spiral line in a region of at least one recess.

What is claimed is: 
     
         1 . A structural unit having a hole pattern for sucking away swarf from a machining surface comprising:
 at least three recesses arranged at least essentially along a first spiral line; and   at least three further recesses arranged at least essentially along a second spiral line, wherein the second spiral line intersects the first spiral line in a region of at least one recess of the at least three recesses and the at least three further recesses.   
     
     
         2 . The structural unit according to  claim 1 , wherein:
 the at least three recesses and the at least three further recesses include a plurality recesses,   at least a large part of the plurality of recesses are arranged along a plurality of spiral lines, and   each spiral line of the plurality of spiral lines has at least three recesses of the plurality of recesses.   
     
     
         3 . The structural unit according to  claim 2 , wherein at least a large part of the plurality of recesses are arranged at intersection points of the plurality of spiral lines. 
     
     
         4 . The structural unit according to preceding  claim 2 , wherein at least two spiral lines of the plurality of spiral lines are contradirectional to one another with respect to a spiral axis of the plurality of spiral lines. 
     
     
         5 . The structural unit according to  claim 4 , wherein the at least two contradirectional spiral lines have different numbers of recesses. 
     
     
         6 . The structural unit according to  claim 4 , wherein at least one of a number of codirectional spiral lines and a number of contradirectional spiral lines correspond to a number of the Fibonacci sequence. 
     
     
         7 . The structural unit according to  claim 1 , wherein at least one spiral line of the plurality of spiral lines corresponds at least approximately to a Fibonacci spiral. 
     
     
         8 . The structural unit according to  claim 1 , wherein each of at least 50% of a portion of recesses which are arranged along a spiral line have a minimum spacing with respect to a center point which differ from all minimum spacings with respect to a center point of recesses which are arranged along two adjacent codirectional spiral lines. 
     
     
         9 . The structural unit according to  claim 1 , wherein the structural unit is a grinding wheel. 
     
     
         10 . The structural unit according to  claim 1 , wherein the structural unit is a grinding plate. 
     
     
         11 . A system comprising:
 a grinding wheel including:
 at least three recesses arranged at least essentially along a first spiral line, and 
 at least three further recesses arranged at least essentially along a second spiral line, wherein the second spiral line intersects the first spiral line in a region of at least one recess of the at least three recesses and the at least three further recesses; and 
   a grinding plate including:
 at least three recesses arranged at least essentially along a first spiral line, and 
 at least three further recesses arranged at least essentially along a second spiral line, wherein the second spiral line intersects the first spiral line in a region of at least one recess of the at least three recesses and the at least three further recesses.